text: /*
   * fdbcli.actor.cpp
   *
   * This source file is part of the FoundationDB open source project
   *
   * Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #include "boost/lexical_cast.hpp"
  #include "fdbclient/NativeAPI.h"
  #include "fdbclient/Status.h"
  #include "fdbclient/StatusClient.h"
  #include "fdbclient/DatabaseContext.h"
  #include "fdbclient/NativeAPI.h"
  #include "fdbclient/ReadYourWrites.h"
  #include "fdbclient/ClusterInterface.h"
  #include "fdbclient/ManagementAPI.h"
  #include "fdbclient/CoordinationInterface.h"
  #include "fdbclient/FDBOptions.g.h"
  
  #include "flow/DeterministicRandom.h"
  #include "flow/SignalSafeUnwind.h"
  #include "fdbrpc/TLSConnection.h"
  #include "fdbrpc/Platform.h"
  
  #include "flow/SimpleOpt.h"
  
  #include "FlowLineNoise.h"
  
  #include <signal.h>
  
  #ifdef __unixish__
  #include <stdio.h>
  #include "fdbcli/linenoise/linenoise.h"
  #endif
  
  #ifndef WIN32
  #include "versions.h"
  #endif
  
  extern const char* getHGVersion();
  
  std::vector<std::string> validOptions;
  
  enum { OPT_CONNFILE, OPT_DATABASE, OPT_HELP, OPT_TRACE, OPT_TRACE_DIR, OPT_TIMEOUT, OPT_EXEC, OPT_NO_STATUS, OPT_STATUS_FROM_JSON, OPT_VERSION };
  
  CSimpleOpt::SOption g_rgOptions[] = {
  	{ OPT_CONNFILE, "-C", SO_REQ_SEP },
  	{ OPT_CONNFILE, "--cluster_file", SO_REQ_SEP },
  	{ OPT_DATABASE, "-d", SO_REQ_SEP },
  	{ OPT_TRACE, "--log", SO_NONE },
  	{ OPT_TRACE_DIR, "--log-dir", SO_REQ_SEP },
  	{ OPT_TIMEOUT, "--timeout", SO_REQ_SEP },
  	{ OPT_EXEC, "--exec", SO_REQ_SEP },
  	{ OPT_NO_STATUS, "--no-status", SO_NONE },
  	{ OPT_HELP, "-?", SO_NONE },
  	{ OPT_HELP, "-h", SO_NONE },
  	{ OPT_HELP, "--help", SO_NONE },
  	{ OPT_STATUS_FROM_JSON, "--status-from-json", SO_REQ_SEP },
  	{ OPT_VERSION,         "--version",        SO_NONE },
  	{ OPT_VERSION,         "-v",               SO_NONE },
  
  	TLS_OPTION_FLAGS
  
  	SO_END_OF_OPTIONS
  };
  
  void printAtCol(const char* text, int col) {
  	const char* iter = text;
  	const char* start = text;
  	const char* space = NULL;
  
  	do {
  		iter++;
  		if (*iter == '\n' || *iter == ' ' || *iter == '\0') space = iter;
  		if (*iter == '\n' || *iter == '\0' || (iter - start == col)) {
  			if (!space) space = iter;
  			printf("%.*s\n", (int)(space - start), start);
  			start = space;
  			if (*start == ' ' || *start == '\n') start++;
  			space = NULL;
  		}
  	} while (*iter);
  }
  
  std::string lineWrap(const char* text, int col) {
  	const char* iter = text;
  	const char* start = text;
  	const char* space = NULL;
  	std::string out = "";
  	do {
  		iter++;
  		if (*iter == '\n' || *iter == ' ' || *iter == '\0') space = iter;
  		if (*iter == '\n' || *iter == '\0' || (iter - start == col)) {
  			if (!space) space = iter;
  			out += format("%.*s\n", (int)(space - start), start);
  			start = space;
  			if (*start == ' '/* || *start == '\n'*/) start++;
  			space = NULL;
  		}
  	} while (*iter);
  	return out;
  }
  
  class FdbOptions {
  public:
  	//Prints an error and throws invalid_option or invalid_option_value if the option could not be set
  	void setOption(Reference<ReadYourWritesTransaction> tr, StringRef optionStr, bool enabled, Optional<StringRef> arg, bool intrans) {
  		auto transactionItr = transactionOptions.legalOptions.find(optionStr.toString());
  		if(transactionItr != transactionOptions.legalOptions.end())
  			setTransactionOption(tr, transactionItr->second, enabled, arg, intrans);
  		else {
  			printf("ERROR: invalid option '%s'. Try `help options' for a list of available options.\n", optionStr.toString().c_str());
  			throw invalid_option();
  		}
  	}
  
  	//Applies all enabled transaction options to the given transaction
  	void apply(Reference<ReadYourWritesTransaction> tr) {
  		for(auto itr = transactionOptions.options.begin(); itr != transactionOptions.options.end(); ++itr)
  			tr->setOption(itr->first, itr->second.cast_to<StringRef>());
  	}
  
  	//Returns true if any options have been set
  	bool hasAnyOptionsEnabled() {
  		return !transactionOptions.options.empty();
  	}
  
  	//Prints a list of enabled options, along with their parameters (if any)
  	void print() {
  		bool found = false;
  		found = found || transactionOptions.print();
  
  		if(!found)
  			printf("There are no options enabled\n");
  	}
  
  	//Returns a vector of the names of all documented options
  	std::vector<std::string> getValidOptions() {
  		return transactionOptions.getValidOptions();
  	}
  
  	//Prints the help string obtained by invoking `help options'
  	void printHelpString() {
  		transactionOptions.printHelpString();
  	}
  
  private:
  	//Sets a transaction option. If intrans == true, then this option is also applied to the passed in transaction.
  	void setTransactionOption(Reference<ReadYourWritesTransaction> tr, FDBTransactionOptions::Option option, bool enabled, Optional<StringRef> arg, bool intrans) {
  		if(enabled && arg.present() != FDBTransactionOptions::optionInfo[option].hasParameter)	{
  			printf("ERROR: option %s a parameter\n", arg.present() ? "did not expect" : "expected");
  			throw invalid_option_value();
  		}
  
  		if(intrans)
  			tr->setOption(option, arg);
  
  		transactionOptions.setOption(option, enabled, arg.cast_to<StringRef>());
  	}
  
  	//A group of enabled options (of type T::Option) as well as a legal options map from string to T::Option
  	template <class T>
  	struct OptionGroup {
  		std::map<typename T::Option, Optional<Standalone<StringRef>>> options;
  		std::map<std::string, typename T::Option> legalOptions;
  
  		OptionGroup<T>() { }
  		OptionGroup<T>(OptionGroup<T> &base) : options(base.options.begin(), base.options.end()), legalOptions(base.legalOptions) { }
  
  		//Enable or disable an option. Returns true if option value changed
  		bool setOption(typename T::Option option, bool enabled, Optional<StringRef> arg) {
  			auto optionItr = options.find(option);
  			if(enabled && (optionItr == options.end() || Optional<Standalone<StringRef>>(optionItr->second).cast_to< StringRef >() != arg)) {
  				options[option] = arg.cast_to<Standalone<StringRef>>();
  				return true;
  			}
  			else if(!enabled && optionItr != options.end()) {
  				options.erase(optionItr);
  				return true;
  			}
  
  			return false;
  		}
  
  		//Prints a list of all enabled options in this group
  		bool print() {
  			bool found = false;
  
  			for(auto itr = legalOptions.begin(); itr != legalOptions.end(); ++itr) {
  				auto optionItr = options.find(itr->second);
  				if(optionItr != options.end()) {
  					if(optionItr->second.present())
  						printf("%s: `%s'\n", itr->first.c_str(), formatStringRef(optionItr->second.get()).c_str());
  					else
  						printf("%s\n", itr->first.c_str());
  
  					found = true;
  				}
  			}
  
  			return found;
  		}
  
  		//Returns true if the specified option is documented
  		bool isDocumented(typename T::Option option) {
  			FDBOptionInfo info = T::optionInfo[option];
  
  			std::string deprecatedStr = "Deprecated";
  			return !info.comment.empty() && info.comment.substr(0, deprecatedStr.size()) != deprecatedStr;
  		}
  
  		//Returns a vector of the names of all documented options
  		std::vector<std::string> getValidOptions() {
  			std::vector<std::string> ret;
  
  			for (auto itr = legalOptions.begin(); itr != legalOptions.end(); ++itr)
  				if(isDocumented(itr->second))
  					ret.push_back(itr->first);
  
  			return ret;
  		}
  
  		//Prints a help string for each option in this group. Any options with no comment
  		//are excluded from this help string. Lines are wrapped to 80 characters.
  		void printHelpString() {
  			for(auto itr = legalOptions.begin(); itr != legalOptions.end(); ++itr) {
  				if(isDocumented(itr->second)) {
  					FDBOptionInfo info = T::optionInfo[itr->second];
  					std::string helpStr = info.name + " - " + info.comment;
  					if(info.hasParameter)
  						helpStr += " " + info.parameterComment;
  					helpStr += "\n";
  
  					printAtCol(helpStr.c_str(), 80);
  				}
  			}
  		}
  	};
  
  	OptionGroup<FDBTransactionOptions> transactionOptions;
  
  public:
  	FdbOptions() {
  		for(auto itr = FDBTransactionOptions::optionInfo.begin(); itr != FDBTransactionOptions::optionInfo.end(); ++itr)
  			transactionOptions.legalOptions[itr->second.name] = itr->first;
  	}
  
  	FdbOptions(FdbOptions &base) : transactionOptions(base.transactionOptions) { }
  };
  
  static std::string formatStringRef(StringRef item, bool fullEscaping = false)
  {
  	std::string ret;
  
  	for (int i = 0; i < item.size(); i++) {
  		if (fullEscaping && item[i] == '\\')
  			ret += "\\\\";
  		else if (fullEscaping && item[i] == '"')
  			ret += "\\\"";
  		else if (fullEscaping && item[i] == ' ')
  			ret += format("\\x%02x", item[i]);
  		else if (item[i] >= 32 && item[i] < 127)
  			ret += item[i];
  		else
  			ret += format("\\x%02x", item[i]);
  	}
  
  	return ret;
  }
  
  static bool tokencmp(StringRef token, const char *command)
  {
  	if (token.size() != strlen(command))
  		return false;
  
  	return !memcmp(token.begin(), command, token.size());
  }
  
  
  static std::vector<std::vector<StringRef>> parseLine(std::string& line, bool& err, bool& partial)
  {
  	err = false;
  	partial = false;
  
  	bool quoted = false;
  	std::vector<StringRef> buf;
  	std::vector<std::vector<StringRef>> ret;
  
  	size_t i = line.find_first_not_of(' ');
  	size_t offset = i;
  
  	bool forcetoken = false;
  
  	while (i <= line.length()) {
  		switch (line[i]) {
  			case ';':
  				if (!quoted) {
  					if (i > offset || (forcetoken && i == offset))
  						buf.push_back(StringRef((uint8_t*)(line.data() + offset), i - offset));
  					ret.push_back(std::move(buf));
  					offset = i = line.find_first_not_of(' ', i+1);
  					forcetoken = false;
  				} else
  					i++;
  				break;
  			case '"':
  				quoted = !quoted;
  				line.erase(i, 1);
  				forcetoken = true;
  				break;
  			case ' ':
  				if (!quoted) {
  					if (i > offset || (forcetoken && i == offset))
  						buf.push_back(StringRef((uint8_t*)(line.data() + offset), i - offset));
  					offset = i = line.find_first_not_of(' ', i);
  					forcetoken = false;
  				} else
  					i++;
  				break;
  			case '\\':
  				if (i + 2 > line.length()) {
  					err = true;
  					ret.push_back(std::move(buf));
  					return ret;
  				}
  				switch (line[i+1]) {
  					char ent, save;
  					case '"':
  					case '\\':
  					case ' ':
  					case ';':
  						line.erase(i, 1);
  						break;
  					case 'x':
  						if (i + 4 > line.length()) {
  							err = true;
  							ret.push_back(std::move(buf));
  							return ret;
  						}
  						char *pEnd;
  						save = line[i + 4];
  						line[i + 4] = 0;
  						ent = char(strtoul(line.data() + i + 2, &pEnd, 16));
  						if (*pEnd) {
  							err = true;
  							ret.push_back(std::move(buf));
  							return ret;
  						}
  						line[i + 4] = save;
  						line.replace(i, 4, 1, ent);
  						break;
  					default:
  						err = true;
  						ret.push_back(std::move(buf));
  						return ret;
  				}
  			default:
  				i++;
  		}
  	}
  
  	i -= 1;
  	if (i > offset || (forcetoken && i == offset))
  		buf.push_back(StringRef((uint8_t*)(line.data() + offset), i - offset));
  
  	ret.push_back(std::move(buf));
  
  	if (quoted)
  		partial = true;
  
  	return ret;
  }
  
  static void printProgramUsage(const char* name) {
  	printf("FoundationDB CLI " FDB_VT_PACKAGE_NAME " (v" FDB_VT_VERSION ")\n"
  		   "usage: %s [OPTIONS]\n"
  		   "\n", name);
  	printf("  -C CONNFILE    The path of a file containing the connection string for the\n"
  		   "                 FoundationDB cluster. The default is first the value of the\n"
  		   "                 FDB_CLUSTER_FILE environment variable, then `./fdb.cluster',\n"
  		   "                 then `%s'.\n", platform::getDefaultClusterFilePath().c_str());
  	printf("  --log          Enables trace file logging for the CLI session.\n"
  		   "  --log-dir PATH Specifes the output directory for trace files. If\n"
  		   "                 unspecified, defaults to the current directory. Has\n"
  		   "                 no effect unless --log is specified.\n"
  		   "  --exec CMDS    Immediately executes the semicolon separated CLI commands\n"
  		   "                 and then exits.\n"
  		   "  --no-status    Disables the initial status check done when starting\n"
  		   "                 the CLI.\n"
  		   TLS_HELP
  		   "  -v, --version  Print FoundationDB CLI version information and exit.\n"
  		   "  -h, --help     Display this help and exit.\n");
  }
  
  
  struct CommandHelp {
  	std::string usage;
  	std::string short_desc;
  	std::string long_desc;
  	CommandHelp() {}
  	CommandHelp(const char* u, const char* s, const char* l) : usage(u), short_desc(s), long_desc(l) {}
  };
  
  std::map<std::string, CommandHelp> helpMap;
  std::set<std::string> hiddenCommands;
  
  #define ESCAPINGK "\n\nFor information on escaping keys, type `help escaping'."
  #define ESCAPINGKV "\n\nFor information on escaping keys and values, type `help escaping'."
  
  void initHelp() {
  	helpMap["begin"] = CommandHelp(
  		"begin",
  		"begin a new transaction",
  		"By default, the fdbcli operates in autocommit mode. All operations are performed in their own transaction, and are automatically committed for you. By explicitly beginning a transaction, successive operations are all performed as part of a single transaction.\n\nTo commit the transaction, use the commit command. To discard the transaction, use the reset command.");
  	helpMap["commit"] = CommandHelp(
  		"commit",
  		"commit the current transaction",
  		"Any sets or clears executed after the start of the current transaction will be committed to the database. On success, the committed version number is displayed. If commit fails, the error is displayed and the transaction must be retried.");
  	helpMap["clear"] = CommandHelp(
  		"clear <KEY>",
  		"clear a key from the database",
  		"Clear succeeds even if the specified key is not present, but may fail because of conflicts." ESCAPINGK);
  	helpMap["clearrange"] = CommandHelp(
  		"clearrange <BEGINKEY> <ENDKEY>",
  		"clear a range of keys from the database",
  		"All keys between BEGINKEY (inclusive) and ENDKEY (exclusive) are cleared from the database. This command will succeed even if the specified range is empty, but may fail because of conflicts." ESCAPINGK);
  	helpMap["configure"] = CommandHelp(
  		"configure [new] <single|double|triple|three_data_hall|three_datacenter|ssd|memory|proxies=<PROXIES>|logs=<LOGS>|resolvers=<RESOLVERS>>*",
  		"change database configuration",
  		"The `new' option, if present, initializes a new database with the given configuration rather than changing the configuration of an existing one. When used, both a redundancy mode and a storage engine must be specified.\n\nRedundancy mode:\n  single - one copy of the data.  Not fault tolerant.\n  double - two copies of data (survive one failure).\n  triple - three copies of data (survive two failures).\n  three_data_hall - See the Admin Guide.\n  three_datacenter - See the Admin Guide.\n\nStorage engine:\n  ssd - B-Tree storage engine optimized for solid state disks.\n  memory - Durable in-memory storage engine for small datasets.\n\nproxies=<PROXIES>: Sets the desired number of proxies in the cluster. Must be at least 1, or set to -1 which restores the number of proxies to the default value.\n\nlogs=<LOGS>: Sets the desired number of log servers in the cluster. Must be at least 1, or set to -1 which restores the number of logs to the default value.\n\nresolvers=<RESOLVERS>: Sets the desired number of resolvers in the cluster. Must be at least 1, or set to -1 which restores the number of resolvers to the default value.\n\nSee the FoundationDB Administration Guide for more information.");
  	helpMap["coordinators"] = CommandHelp(
  		"coordinators auto|<ADDRESS>+ [description=new_cluster_description]",
  		"change cluster coordinators or description",
  		"If 'auto' is specified, coordinator addresses will be choosen automatically to support the configured redundancy level. (If the current set of coordinators are healthy and already support the redundancy level, nothing will be changed.)\n\nOtherwise, sets the coordinators to the list of IP:port pairs specified by <ADDRESS>+. An fdbserver process must be running on each of the specified addresses.\n\ne.g. coordinators 10.0.0.1:4000 10.0.0.2:4000 10.0.0.3:4000\n\nIf 'description=desc' is specified then the description field in the cluster\nfile is changed to desc, which must match [A-Za-z0-9_]+.");
  	helpMap["exclude"] = CommandHelp(
  		"exclude <ADDRESS>*",
  		"exclude servers from the database",
  		"If no addresses are specified, lists the set of excluded servers.\n\nFor each IP address or IP:port pair in <ADDRESS>*, adds the address to the set of excluded servers then waits until all database state has been safely moved away from the specified servers.");
  	helpMap["include"] = CommandHelp(
  		"include all|<ADDRESS>*",
  		"permit previously-excluded servers to rejoin the database",
  		"If `all' is specified, the excluded servers list is cleared.\n\nFor each IP address or IP:port pair in <ADDRESS>*, removes any matching exclusions from the excluded servers list. (A specified IP will match all IP:* exclusion entries)");
  	helpMap["setclass"] = CommandHelp(
  		"setclass <ADDRESS> <unset|storage|transaction|default>",
  		"change the class of a process",
  		"If no address and class are specified, lists the classes of all servers.\n\nSetting the class to `default' resets the process class to the class specified on the command line.");
  	helpMap["status"] = CommandHelp(
  		"status [minimal] [details] [json]",
  		"get the status of a FoundationDB cluster",
  		"If the cluster is down, this command will print a diagnostic which may be useful in figuring out what is wrong. If the cluster is running, this command will print cluster statistics.\n\nSpecifying 'minimal' will provide a minimal description of the status of your database.\n\nSpecifying 'details' will provide load information for individual workers.\n\nSpecifying 'json' will provide status information in a machine readable JSON format.");
  	helpMap["exit"] = CommandHelp("exit", "exit the CLI", "");
  	helpMap["quit"] = CommandHelp();
  	helpMap["waitconnected"] = CommandHelp();
  	helpMap["waitopen"] = CommandHelp();
  	helpMap["get"] = CommandHelp(
  		"get <KEY>",
  		"fetch the value for a given key",
  		"Displays the value of KEY in the database, or `not found' if KEY is not present." ESCAPINGK);
  	helpMap["getrange"] = CommandHelp(
  		"getrange <BEGINKEY> [ENDKEY] [LIMIT]",
  		"fetch key/value pairs in a range of keys",
  		"Displays up to LIMIT keys and values for keys between BEGINKEY (inclusive) and ENDKEY (exclusive). If ENDKEY is omitted, then the range will include all keys starting with BEGINKEY. LIMIT defaults to 25 if omitted." ESCAPINGK);
  	helpMap["getrangekeys"] = CommandHelp(
  		"getrangekeys <BEGINKEY> [ENDKEY] [LIMIT]",
  		"fetch keys in a range of keys",
  		"Displays up to LIMIT keys for keys between BEGINKEY (inclusive) and ENDKEY (exclusive). If ENDKEY is omitted, then the range will include all keys starting with BEGINKEY. LIMIT defaults to 25 if omitted." ESCAPINGK);
  	helpMap["reset"] = CommandHelp(
  		"reset",
  		"reset the current transaction",
  		"Any sets or clears executed after the start of the active transaction will be discarded.");
  	helpMap["rollback"] = CommandHelp(
  		"rollback",
  		"rolls back the current transaction",
  		"The active transaction will be discarded, including any sets or clears executed since the transaction was started.");
  	helpMap["set"] = CommandHelp(
  		"set <KEY> <VALUE>",
  		"set a value for a given key",
  		"If KEY is not already present in the database, it will be created." ESCAPINGKV);
  	helpMap["option"] = CommandHelp(
  		"option <STATE> <OPTION> <ARG>",
  		"enables or disables an option",
  		"If STATE is `on', then the option OPTION will be enabled with optional parameter ARG, if required. If STATE is `off', then OPTION will be disabled.\n\nIf there is no active transaction, then the option will be applied to all operations as well as all subsequently created transactions (using `begin').\n\nIf there is an active transaction (one created with `begin'), then enabled options apply only to that transaction. Options cannot be disabled on an active transaction.\n\nCalling `option' with no parameters prints a list of all enabled options.\n\nFor information about specific options that can be set, type `help options'.");
  	helpMap["help"] = CommandHelp(
  		"help [<topic>]",
  		"get help about a topic or command", "");
  	helpMap["writemode"] = CommandHelp(
  		"writemode <on|off>",
  		"enables or disables sets and clears",
  		"Setting or clearing keys from the CLI is not recommended.");
  	helpMap["kill"] = CommandHelp(
  		"kill all|list|<ADDRESS>*",
  		"attempts to kill one or more processes in the cluster",
  		"If no addresses are specified, populates the list of processes which can be killed. Processes cannot be killed before this list has been populated.\n\nIf `all' is specified, attempts to kill all known processes.\n\nIf `list' is specified, displays all known processes. This is only useful when the database is unresponsive.\n\nFor each IP:port pair in <ADDRESS>*, attempt to kill the specified process.");
  	helpMap["profile"] = CommandHelp(
  		"<type> <action> <ARGS>",
  		"namespace for all the profiling-related commands.",
  		"Different types support different actions.  Run `profile` to get a list of types, and iteratively explore the help.\n");
  
  	hiddenCommands.insert("expensive_data_check");
  	hiddenCommands.insert("datadistribution");
  }
  
  void printVersion() {
  	printf("FoundationDB CLI " FDB_VT_PACKAGE_NAME " (v" FDB_VT_VERSION ")\n");
  	printf("source version %s\n", getHGVersion());
  	printf("protocol %llx\n", currentProtocolVersion);
  }
  
  void printHelpOverview() {
  	printf("\nList of commands:\n\n");
  	for (auto i = helpMap.begin(); i != helpMap.end(); ++i)
  		if (i->second.short_desc.size())
  			printf(" %s:\n      %s\n", i->first.c_str(), i->second.short_desc.c_str());
  	printf("\nFor information on a specific command, type `help <command>'.");
  	printf("\nFor information on escaping keys and values, type `help escaping'.");
  	printf("\nFor information on available options, type `help options'.\n\n");
  }
  
  void printHelp(StringRef command) {
  	auto i = helpMap.find(command.toString());
  	if (i != helpMap.end() && i->second.short_desc.size()) {
  		printf("\n%s\n\n", i->second.usage.c_str());
  		auto cstr = i->second.short_desc.c_str();
  		printf("%c%s.\n", toupper(cstr[0]), cstr+1);
  		if (!i->second.long_desc.empty()) {
  			printf("\n");
  			printAtCol(i->second.long_desc.c_str(), 80);
  		}
  		printf("\n");
  	} else
  		printf("I don't know anything about `%s'\n", formatStringRef(command).c_str());
  }
  
  void printUsage(StringRef command) {
  	auto i = helpMap.find(command.toString());
  	if (i != helpMap.end())
  		printf("Usage: %s\n", i->second.usage.c_str());
  	else
  		printf("ERROR: Unknown command `%s'\n", command.toString().c_str());
  }
  
  std::string getCoordinatorsInfoString(StatusObjectReader statusObj) {
  	std::string outputString;
  	try {
  		StatusArray coordinatorsArr = statusObj["client.coordinators.coordinators"].get_array();
  		for (StatusObjectReader coor : coordinatorsArr)
  			outputString += format("\n  %s  (%s)", coor["address"].get_str().c_str(), coor["reachable"].get_bool() ? "reachable" : "unreachable");
  	}
  	catch (std::runtime_error& e){
  		outputString = "\n  Unable to retrieve list of coordination servers";
  	}
  
  	return outputString;
  }
  
  std::string getDateInfoString(StatusObjectReader statusObj, std::string key) {
  	time_t curTime;
  	if (!statusObj.has(key)) {
  		return "";
  	}
  	curTime = statusObj.last().get_int64();
  	char buffer[128];
  	struct tm* timeinfo;
  	timeinfo = localtime(&curTime);
  	strftime(buffer, 128, "%m/%d/%y %H:%M:%S", timeinfo);
  	return std::string(buffer);
  }
  
  std::string getProcessAddressByServerID(StatusObjectReader processesMap, std::string serverID) {
  	for (auto proc : processesMap.obj()){
  		try {
  			StatusArray rolesArray = proc.second.get_obj()["roles"].get_array();
  			for (StatusObjectReader role : rolesArray) {
  				if (role["id"].get_str().find(serverID) == 0) {
  					// If this next line throws, then we found the serverID but the role has no address, so the role is skipped.
  					return proc.second.get_obj()["address"].get_str();
  				}
  			}
  		}
  		catch (std::exception &e) {
  			// If an entry in the process map is badly formed then something will throw. Since we are
  			// looking for a positive match, just ignore any read execeptions and move on to the next proc
  		}
  	}
  	return "unknown";
  }
  
  std::string getWorkloadRates(StatusObjectReader statusObj, bool unknown, std::string first, std::string second, bool transactionSection = false){
  	// Re-point statusObj at either the transactions sub-doc or the operations sub-doc depending on transactionSection flag
  	if (transactionSection){
  		if (!statusObj.get("transactions", statusObj))
  			return "unknown";
  	}
  	else {
  		if (!statusObj.get("operations", statusObj))
  			return "unknown";
  	}
  
  	std::string path = first + "." + second;
  	double value;
  	if (!unknown && statusObj.get(path, value)) {
  		return format("%d Hz", (int)round(value));
  	}
  	return "unknown";
  }
  
  void getBackupDRTags(StatusObjectReader &statusObjCluster, const char *context, std::map<std::string, std::string> &tagMap) {
  	std::string path = format("layers.%s.tags", context);
  	StatusObjectReader tags;
  	if(statusObjCluster.tryGet(path, tags)) {
  		for(auto itr : tags.obj()) {
  			JSONDoc tag(itr.second);
  			bool running = false;
  			tag.tryGet("running_backup", running);
  			if(running) {
  				std::string uid;
  				if(tag.tryGet("mutation_stream_id", uid)) {
  					tagMap[itr.first] = uid;
  				}
  				else {
  					tagMap[itr.first] = "";
  				}
  			}
  		}
  	}
  }
  
  std::string logBackupDR(const char *context, std::map<std::string, std::string> const& tagMap) {
  	std::string outputString = "";
  	if(tagMap.size() > 0) {
  		outputString += format("\n\n%s:", context);
  		for(auto itr : tagMap) {
  			outputString += format("\n  %-22s", itr.first.c_str());
  			if(itr.second.size() > 0) {
  				outputString += format(" - %s", itr.second.c_str());
  			}
  		}
  	}
  
  	return outputString;
  }
  
  void printStatus(StatusObjectReader statusObj, StatusClient::StatusLevel level, bool displayDatabaseAvailable = true, bool hideErrorMessages = false) {
  	if (FlowTransport::transport().incompatibleOutgoingConnectionsPresent()) {
  		printf("WARNING: One or more of the processes in the cluster is incompatible with this version of fdbcli.\n\n");
  	}
  
  	try {
  		bool printedCoordinators = false;
  
  		// status or status details
  		if (level == StatusClient::NORMAL || level == StatusClient::DETAILED) {
  
  			StatusObjectReader statusObjClient;
  			statusObj.get("client", statusObjClient);
  
  			// The way the output string is assembled is to add new line character before addition to the string rather than after
  			std::string outputString = "";
  			std::string clusterFilePath;
  			if (statusObjClient.get("cluster_file.path", clusterFilePath))
  				outputString = format("Using cluster file `%s'.\n", clusterFilePath.c_str());
  			else
  				outputString = "Using unknown cluster file.\n";
  
  			StatusObjectReader statusObjCoordinators;
  			StatusArray coordinatorsArr;
  
  			if (statusObjClient.get("coordinators", statusObjCoordinators)) {
  				// Look for a second "coordinators", under the first one.
  				if (statusObjCoordinators.has("coordinators"))
  					coordinatorsArr = statusObjCoordinators.last().get_array();
  			}
  
  			// Check if any coordination servers are unreachable
  			bool quorum_reachable;
  			if (statusObjCoordinators.get("quorum_reachable", quorum_reachable) && !quorum_reachable){
  				outputString += "\nCould not communicate with a quorum of coordination servers:";
  				outputString += getCoordinatorsInfoString(statusObj);
  
  				printf("%s\n", outputString.c_str());
  				return;
  			}
  			else {
  				for (StatusObjectReader coor : coordinatorsArr){
  					bool reachable;
  					if (coor.get("reachable", reachable) && !reachable){
  						outputString += "\nCould not communicate with all of the coordination servers."
  							"\n  The database will remain operational as long as we"
  							"\n  can connect to a quorum of servers, however the fault"
  							"\n  tolerance of the system is reduced as long as the"
  							"\n  servers remain disconnected.\n";
  						outputString += getCoordinatorsInfoString(statusObj);
  						outputString += "\n";
  						printedCoordinators = true;
  						break;
  					}
  				}
  			}
  
  			// print any client messages
  			if (statusObjClient.has("messages")){
  				for (StatusObjectReader message : statusObjClient.last().get_array()){
  					std::string desc;
  					if (message.get("description", desc))
  						outputString += "\n" + lineWrap(desc.c_str(), 80);
  				}
  			}
  
  			bool fatalRecoveryState = false;
  			StatusObjectReader statusObjCluster;
  			try {
  				if (statusObj.get("cluster", statusObjCluster)){
  
  					StatusObjectReader recoveryState;
  					if (statusObjCluster.get("recovery_state", recoveryState)) {
  						std::string name;
  						std::string description;
  						if (recoveryState.get("name", name) &&
  							recoveryState.get("description", description) &&
  							name != "fully_recovered" && name != "remote_recovered")
  						{
  							fatalRecoveryState = true;
  
  							if (name == "recruiting_transaction_servers") {
  								description += format("\nNeed at least %d log servers, %d proxies and %d resolvers.", recoveryState["required_logs"].get_int(), recoveryState["required_proxies"].get_int(), recoveryState["required_resolvers"].get_int());
  								if (statusObjCluster.has("machines") && statusObjCluster.has("processes"))
  									description += format("\nHave %d processes on %d machines.", statusObjCluster["processes"].get_obj().size(), statusObjCluster["machines"].get_obj().size());
  							} else if (name == "locking_old_transaction_servers" && recoveryState["missing_logs"].get_str().size()) {
  								description += format("\nNeed one or more of the following log servers: %s", recoveryState["missing_logs"].get_str().c_str());
  							}
  							description = lineWrap(description.c_str(), 80);
  							if (!printedCoordinators && (
  								name == "reading_coordinated_state" ||
  								name == "locking_coordinated_state" ||
  								name == "configuration_never_created" ||
  								name == "writing_coordinated_state"))
  							{
  								description += getCoordinatorsInfoString(statusObj);
  								description += "\n";
  								printedCoordinators = true;
  							}
  
  							outputString += "\n" + description;
  						}
  					}
  				}
  			}
  			catch (std::runtime_error& e){ }
  
  
  			// Check if cluster controllable is reachable
  			try {
  				// print any cluster messages
  				if (statusObjCluster.has("messages") && statusObjCluster.last().get_array().size()){
  
  					// any messages we don't want to display
  					std::set<std::string> skipMsgs = { "unreachable_process", "" };
  					if (fatalRecoveryState){
  						skipMsgs.insert("status_incomplete");
  						skipMsgs.insert("unreadable_configuration");
  						skipMsgs.insert("immediate_priority_transaction_start_probe_timeout");
  						skipMsgs.insert("batch_priority_transaction_start_probe_timeout");
  						skipMsgs.insert("transaction_start_probe_timeout");
  						skipMsgs.insert("read_probe_timeout");
  						skipMsgs.insert("commit_probe_timeout");
  					}
  
  					for (StatusObjectReader msgObj : statusObjCluster.last().get_array()){
  						std::string messageName;
  						if(!msgObj.get("name", messageName)){
  							continue;
  						}
  						if (skipMsgs.count(messageName)){
  							continue;
  						}
  						else if (messageName == "client_issues"){
  							if (msgObj.has("issues")){
  								for (StatusObjectReader issue : msgObj["issues"].get_array()){
  									std::string issueName;
  									if (!issue.get("name", issueName)){
  										continue;
  									}
  
  									std::string description;
  									if(!issue.get("description", description)) {
  										description = issueName;
  									}
  
  									std::string countStr;
  									StatusArray addresses;
  									if(!issue.has("addresses")) {
  										countStr = "Some client(s)";
  									}
  									else {
  										addresses = issue["addresses"].get_array();
  										countStr = format("%d client(s)", addresses.size());
  									}
  									outputString += format("\n%s reported: %s\n", countStr.c_str(), description.c_str());
  
  									if(level == StatusClient::StatusLevel::DETAILED) {
  										for(int i = 0; i < addresses.size() && i < 4; ++i) {
  											outputString += format("  %s\n", addresses[i].get_str().c_str());
  										}
  										if(addresses.size() > 4) {
  											outputString += "  ...\n";
  										}
  									}
  								}
  							}
  						}
  						else {
  							if (msgObj.has("description"))
  								outputString += "\n" + lineWrap(msgObj.last().get_str().c_str(), 80);
  						}
  
  					}
  				}
  			}
  			catch (std::runtime_error& e){}
  
  			if (fatalRecoveryState){
  				printf("%s", outputString.c_str());
  				return;
  			}
  
  			StatusObjectReader statusObjConfig;
  			StatusArray excludedServersArr;
  
  			if (statusObjCluster.get("configuration", statusObjConfig)) {
  				if (statusObjConfig.has("excluded_servers"))
  					excludedServersArr = statusObjConfig.last().get_array();
  			}
  
  			// If there is a configuration message then there is no configuration information to display
  			outputString += "\nConfiguration:";
  			std::string outputStringCache = outputString;
  			try {
  				// Configuration section
  				// FIXME: Should we suppress this if there are cluster messages implying that the database has no configuration?
  
  				outputString += "\n  Redundancy mode        - ";
  				std::string strVal;
  
  				if (statusObjConfig.get("redundancy_mode", strVal)){
  					outputString += strVal;
  				} else
  					outputString += "unknown";
  
  				outputString += "\n  Storage engine         - ";
  				if (statusObjConfig.get("storage_engine", strVal)){
  					outputString += strVal;
  				} else
  					outputString += "unknown";
  
  				int intVal;
  				outputString += "\n  Coordinators           - ";
  				if (statusObjConfig.get("coordinators_count", intVal)){
  					outputString += std::to_string(intVal);
  				} else
  					outputString += "unknown";
  
  				if (excludedServersArr.size()) {
  					outputString += format("\n  Exclusions             - %d (type `exclude' for details)", excludedServersArr.size());
  				}
  
  				if (statusObjConfig.get("proxies", intVal))
  					outputString += format("\n  Desired Proxies        - %d", intVal);
  
  				if (statusObjConfig.get("resolvers", intVal))
  					outputString += format("\n  Desired Resolvers      - %d", intVal);
  
  				if (statusObjConfig.get("logs", intVal))
  					outputString += format("\n  Desired Logs           - %d", intVal);
  			}
  			catch (std::runtime_error& e) {
  				outputString = outputStringCache;
  				outputString += "\n  Unable to retrieve configuration status";
  			}
  
  			// Cluster section
  			outputString += "\n\nCluster:";
  			StatusObjectReader processesMap;
  			StatusObjectReader machinesMap;
  
  			outputStringCache = outputString;
  			// this bool removed code duplication when there's an else (usually due to a missing field) that should print some error message
  			//     which would be the same error message if the catch block was hit
  			bool success = false;
  			try {
  				outputString += "\n  FoundationDB processes - ";
  				if (statusObjCluster.get("processes", processesMap)) {
  
  					outputString += format("%d", processesMap.obj().size());
  
  					int errors = 0;
  					int processExclusions = 0;
  					for (auto p : processesMap.obj()) {
  						StatusObjectReader process(p.second);
  						if (process.has("excluded") && process.last().get_bool())
  							processExclusions++;
  						if (process.has("messages") && process.last().get_array().size()){
  							errors ++;
  						}
  					}
  
  					if (errors > 0 || processExclusions){
  						outputString += format(" (less %d excluded; %d with errors)", processExclusions, errors);
  					}
  
  				} else
  					outputString += "unknown";
  
  				outputString += "\n  Machines               - ";
  				if (statusObjCluster.get("machines", machinesMap)) {
  					outputString += format("%d", machinesMap.obj().size());
  
  					int machineExclusions = 0;
  					for (auto mach : machinesMap.obj()) {
  						StatusObjectReader machine(mach.second);
  						if (machine.has("excluded") && machine.last().get_bool())
  							machineExclusions++;
  					}
  
  					if (machineExclusions){
  						outputString += format(" (less %d excluded)", machineExclusions);
  					}
  
  					int64_t minMemoryAvailable = std::numeric_limits<int64_t>::max();
  					for (auto proc : processesMap.obj()) {
  						StatusObjectReader process(proc.second);
  						int64_t availBytes;
  						if (process.get("memory.available_bytes", availBytes)) {
  							minMemoryAvailable = std::min(minMemoryAvailable, availBytes);
  						}
  					}
  
  					if (minMemoryAvailable < std::numeric_limits<int64_t>::max()) {
  						double worstServerGb = minMemoryAvailable / (1024.0 * 1024 * 1024);
  						outputString += "\n  Memory availability    - ";
  						outputString += format("%.1f GB per process on machine with least available", worstServerGb);
  						outputString += minMemoryAvailable < 4294967296 ? "\n                           >>>>> (WARNING: 4.0 GB recommended) <<<<<" : "";
  					}
  
  					double retransCount = 0;
  					for (auto mach : machinesMap.obj()){
  						StatusObjectReader machine(mach.second);
  						double hz;
  						if (machine.get("network.tcp_segments_retransmitted.hz", hz))
  							retransCount += hz;
  					}
  
  					if (retransCount > 0){
  						outputString += format("\n  Retransmissions rate   - %d Hz", (int)round(retransCount));
  					}
  				} else
  					outputString += "\n  Machines               - unknown";
  
  				StatusObjectReader faultTolerance;
  				if (statusObjCluster.get("fault_tolerance", faultTolerance)) {
  					int availLoss, dataLoss;
  
  					if (faultTolerance.get("max_machine_failures_without_losing_availability", availLoss) && faultTolerance.get("max_machine_failures_without_losing_data", dataLoss)) {
  
  						outputString += "\n  Fault Tolerance        - ";
  
  						int minLoss = std::min(availLoss, dataLoss);
  						if (minLoss == 1)
  							outputString += "1 machine";
  						else
  							outputString += format("%d machines", minLoss);
  
  						if (dataLoss > availLoss){
  							outputString += format(" (%d without data loss)", dataLoss);
  						}
  
  					}
  				}
  
  				std::string serverTime = getDateInfoString(statusObjCluster, "cluster_controller_timestamp");
  				if (serverTime != ""){
  					outputString += "\n  Server time            - " + serverTime;
  				}
  			}
  			catch (std::runtime_error& e){
  				outputString = outputStringCache;
  				outputString += "\n  Unable to retrieve cluster status";
  			}
  
  			StatusObjectReader statusObjData;
  			statusObjCluster.get("data", statusObjData);
  
  			// Data section
  			outputString += "\n\nData:";
  			outputStringCache = outputString;
  			try {
  				outputString += "\n  Replication health     - ";
  
  				StatusObjectReader statusObjDataState;
  				statusObjData.get("state", statusObjDataState);
  
  				std::string dataState;
  				statusObjDataState.get("name", dataState);
  
  				std::string description = "";
  				statusObjDataState.get("description", description);
  
  				bool healthy;
  				if (statusObjDataState.get("healthy", healthy) && healthy) {
  					outputString += "Healthy" + (description != "" ? " (" + description + ")" : "");
  				}
  				else if (dataState == "missing_data") {
  					outputString += "UNHEALTHY" + (description != "" ? ": " + description : "");
  				}
  				else if (dataState == "healing") {
  					outputString += "HEALING" + (description != "" ? ": " + description : "");
  				}
  				else if (description != "") {
  					outputString += description;
  				}
  				else {
  					outputString += "unknown";
  				}
  
  				if (statusObjData.has("moving_data")){
  					StatusObjectReader movingData = statusObjData.last();
  					double dataInQueue, dataInFlight;
  					if (movingData.get("in_queue_bytes", dataInQueue) && movingData.get("in_flight_bytes", dataInFlight))
  						outputString += format("\n  Moving data            - %.3f GB", ((double)dataInQueue + (double)dataInFlight) / 1e9);
  				}
  				else if (dataState == "initializing") {
  					outputString += "\n  Moving data            - unknown (initializing)";
  				}
  				else {
  					outputString += "\n  Moving data            - unknown";
  				}
  
  				outputString += "\n  Sum of key-value sizes - ";
  
  				if (statusObjData.has("total_kv_size_bytes")){
  					double totalDBBytes = statusObjData.last().get_int64();
  
  					if (totalDBBytes >= 1e12)
  						outputString += format("%.3f TB", (totalDBBytes / 1e12));
  
  					else if (totalDBBytes >= 1e9)
  						outputString += format("%.3f GB", (totalDBBytes / 1e9));
  
  					else
  						// no decimal points for MB
  						outputString += format("%d MB", (int)round(totalDBBytes / 1e6));
  				}
  				else {
  					outputString += "unknown";
  				}
  
  				outputString += "\n  Disk space used        - ";
  
  				if (statusObjData.has("total_disk_used_bytes")){
  					double totalDiskUsed = statusObjData.last().get_int64();
  
  					if (totalDiskUsed >= 1e12)
  						outputString += format("%.3f TB", (totalDiskUsed / 1e12));
  
  					else if (totalDiskUsed >= 1e9)
  						outputString += format("%.3f GB", (totalDiskUsed / 1e9));
  
  					else
  						// no decimal points for MB
  						outputString += format("%d MB", (int)round(totalDiskUsed / 1e6));
  				}
  				else
  					outputString += "unknown";
  
  			}
  			catch (std::runtime_error& e) {
  				outputString = outputStringCache;
  				outputString += "\n  Unable to retrieve data status";
  			}
  
  			// Operating space section
  			outputString += "\n\nOperating space:";
  			std::string operatingSpaceString = "";
  			try {
  				int64_t val;
  				if (statusObjData.get("least_operating_space_bytes_storage_server", val))
  					operatingSpaceString += format("\n  Storage server         - %.1f GB free on most full server", std::max(val / 1e9, 0.0));
  
  				if (statusObjData.get("least_operating_space_bytes_log_server", val))
  					operatingSpaceString += format("\n  Log server             - %.1f GB free on most full server", std::max(val / 1e9, 0.0));
  
  			}
  			catch (std::runtime_error& e){
  				operatingSpaceString = "";
  			}
  
  			if (operatingSpaceString.empty()) {
  				operatingSpaceString += "\n  Unable to retrieve operating space status";
  			}
  			outputString += operatingSpaceString;
  
  			// Workload section
  			outputString += "\n\nWorkload:";
  			outputStringCache = outputString;
  			try {
  				// Determine which rates are unknown
  				StatusObjectReader statusObjWorkload;
  				statusObjCluster.get("workload", statusObjWorkload);
  
  				std::string performanceLimited = "";
  				bool unknownMCT = false;
  				bool unknownRP = false;
  
  				// Print performance limit details if known.
  				try {
  					StatusObjectReader limit = statusObjCluster["qos.performance_limited_by"];
  					std::string name = limit["name"].get_str();
  					if (name != "workload")
  					{
  						std::string desc = limit["description"].get_str();
  						std::string serverID;
  						limit.get("reason_server_id", serverID);
  						std::string procAddr = getProcessAddressByServerID(processesMap, serverID);
  						performanceLimited = format("\n  Performance limited by %s: %s", (procAddr == "unknown") ? ("server" + (serverID == "" ? "" : (" " + serverID))).c_str() : "process", desc.c_str());
  						if (procAddr != "unknown")
  							performanceLimited += format("\n  Most limiting process: %s", procAddr.c_str());
  					}
  				}
  				catch (std::exception &e) {
  					// If anything here throws (such as for an incompatible type) ignore it.
  				}
  
  				// display the known rates
  				outputString += "\n  Read rate              - ";
  				outputString += getWorkloadRates(statusObjWorkload, unknownRP, "reads", "hz");
  
  				outputString += "\n  Write rate             - ";
  				outputString += getWorkloadRates(statusObjWorkload, unknownMCT, "writes", "hz");
  
  				outputString += "\n  Transactions started   - ";
  				outputString += getWorkloadRates(statusObjWorkload, unknownMCT, "started", "hz", true);
  
  				outputString += "\n  Transactions committed - ";
  				outputString += getWorkloadRates(statusObjWorkload, unknownMCT, "committed", "hz", true);
  
  				outputString += "\n  Conflict rate          - ";
  				outputString += getWorkloadRates(statusObjWorkload, unknownMCT, "conflicted", "hz", true);
  
  				outputString += unknownRP ? "" : performanceLimited;
  
  				// display any process messages
  				// FIXME:  Above comment is not what this code block does, it actually just looks for a specific message in the process
  				// map, *by description*, and adds process addresses that have it to a vector.  Either change the comment or the code.
  				std::vector<std::string> messagesAddrs;
  				for (auto proc : processesMap.obj()){
  					StatusObjectReader process(proc.second);
  					if (process.has("messages")) {
  						StatusArray processMessagesArr = process.last().get_array();
  						if (processMessagesArr.size()){
  							for (StatusObjectReader msg : processMessagesArr){
  								std::string desc;
  								std::string addr;
  								if (msg.get("description", desc) && desc == "Unable to update cluster file." && process.get("address", addr)){
  									messagesAddrs.push_back(addr);
  								}
  							}
  						}
  					}
  				}
  				if (messagesAddrs.size()){
  					outputString += format("\n\n%d FoundationDB processes reported unable to update cluster file:", messagesAddrs.size());
  					for (auto msg : messagesAddrs){
  						outputString += "\n  " + msg;
  					}
  				}
  			}
  			catch (std::runtime_error& e){
  				outputString = outputStringCache;
  				outputString += "\n  Unable to retrieve workload status";
  			}
  
  			// Backup and DR section
  			outputString += "\n\nBackup and DR:";
  
  			std::map<std::string, std::string> backupTags;
  			getBackupDRTags(statusObjCluster, "backup", backupTags);
  
  			std::map<std::string, std::string> drPrimaryTags;
  			getBackupDRTags(statusObjCluster, "dr_backup", drPrimaryTags);
  
  			std::map<std::string, std::string> drSecondaryTags;
  			getBackupDRTags(statusObjCluster, "dr_backup_dest", drSecondaryTags);
  
  			outputString += format("\n  Running backups        - %d", backupTags.size());
  			outputString += format("\n  Running DRs            - ");
  
  			if(drPrimaryTags.size() == 0 && drSecondaryTags.size() == 0) {
  				outputString += format("%d", 0);
  			}
  			else {
  				if(drPrimaryTags.size() > 0) {
  					outputString += format("%d as primary", drPrimaryTags.size());
  					if(drSecondaryTags.size() > 0) {
  						outputString += ", ";
  					}
  				}
  				if(drSecondaryTags.size() > 0) {
  					outputString += format("%d as secondary", drSecondaryTags.size());
  				}		
  			}
  
  			// status details
  			if (level == StatusClient::DETAILED) {
  				outputString += logBackupDR("Running backup tags", backupTags);
  				outputString += logBackupDR("Running DR tags (as primary)", drPrimaryTags);
  				outputString += logBackupDR("Running DR tags (as secondary)", drSecondaryTags);
  
  				outputString += "\n\nProcess performance details:";
  				outputStringCache = outputString;
  				try {
  					// constructs process performance details output
  					std::map<int, std::string> workerDetails;
  					for (auto proc : processesMap.obj()){
  						StatusObjectReader procObj(proc.second);
  						std::string address;
  						procObj.get("address", address);
  
  						std::string line;
  
  						// Windows does not support the "hh" width specifier so just using unsigned int to be safe.
  						unsigned int a, b, c, d, port;
  						int tokens = sscanf(address.c_str(), "%u.%u.%u.%u:%u", &a, &b, &c, &d, &port);
  
  						// If did not get exactly 5 tokens, or one of the integers is too large, address is invalid.
  						if (tokens != 5 || a & ~0xFF || b & ~0xFF || c & ~0xFF || d & ~0xFF || port & ~0xFFFF)
  						{
  							line = format("  %-22s (invalid IP address or port)", address.c_str());
  							std::string &lastline = workerDetails[std::numeric_limits<int>::max()];
  							if (!lastline.empty())
  								lastline.append("\n");
  							lastline += line;
  							continue;
  						}
  
  						// Create addrNum as a 48 bit number {A}{B}{C}{D}{PORT}
  						uint64_t addrNum = 0;
  						for (auto i : { a, b, c, d })
  							addrNum = (addrNum << 8) | i;
  						addrNum = (addrNum << 16) | port;
  
  						try {
  							double tx = -1, rx = -1, mCPUUtil = -1;
  							int64_t processTotalSize;
  
  							// Get the machine for this process
  							//StatusObjectReader mach = machinesMap[procObj["machine_id"].get_str()];
  							StatusObjectReader mach;
  							if (machinesMap.get(procObj["machine_id"].get_str(), mach, false)) {
  								StatusObjectReader machCPU;
  								if (mach.get("cpu", machCPU)) {
  
  									machCPU.get("logical_core_utilization", mCPUUtil);
  
  									StatusObjectReader network;
  									if (mach.get("network", network)){
  										network.get("megabits_sent.hz", tx);
  										network.get("megabits_received.hz", rx);
  									}
  								}
  							}
  
  							procObj.get("memory.used_bytes", processTotalSize);
  
  							StatusObjectReader procCPUObj;
  							procObj.get("cpu", procCPUObj);
  
  							line = format("  %-22s (", address.c_str());
  
  							double usageCores;
  							if (procCPUObj.get("usage_cores", usageCores))
  								line += format("%3.0f%% cpu;", usageCores * 100);
  
  							line += mCPUUtil != -1 ? format("%3.0f%% machine;", mCPUUtil * 100) : "";
  							line += std::min(tx, rx) != -1 ? format("%6.3f Gbps;", std::max(tx, rx) / 1000.0) : "";
  
  							double diskBusy;
  							if (procObj.get("disk.busy", diskBusy))
  								line += format("%3.0f%% disk IO;", 100.0 * diskBusy);
  
  							line += processTotalSize != -1 ? format("%4.1f GB", processTotalSize / (1024.0 * 1024 * 1024)) : "";
  
  							double availableBytes;
  							if (procObj.get("memory.available_bytes", availableBytes))
  								line += format(" / %3.1f GB RAM  )", availableBytes / (1024.0 * 1024 * 1024));
  							else
  								line += "  )";
  
  							if (procObj.has("messages")){
  								for (StatusObjectReader message : procObj.last().get_array()){
  									std::string desc;
  									if(message.get("description", desc)) {
  										if (message.has("type")){
  											line += "\n    Last logged error: " + desc;
  										}
  										else {
  											line += "\n    " + desc;
  										}
  									}
  								}
  							}
  
  							workerDetails[addrNum] = line;
  						}
  
  						catch (std::runtime_error& e) {
  							std::string noMetrics = format("  %-22s (no metrics available)", address.c_str());
  							workerDetails[addrNum] = noMetrics;
  						}
  					}
  					for (auto w : workerDetails)
  						outputString += "\n" + format("%s", w.second.c_str());
  				}
  				catch (std::runtime_error& e){
  					outputString = outputStringCache;
  					outputString += "\n  Unable to retrieve process performance details";
  				}
  
  				if (!printedCoordinators) {
  					printedCoordinators = true;
  					outputString += "\n\nCoordination servers:";
  					outputString += getCoordinatorsInfoString(statusObj);
  				}
  			}
  
  			// client time
  			std::string clientTime = getDateInfoString(statusObjClient, "timestamp");
  			if (clientTime != ""){
  				outputString += "\n\nClient time: " + clientTime;
  			}
  			printf("%s\n", outputString.c_str());
  		}
  
  		// status minimal
  		else if (level == StatusClient::MINIMAL) {
  			// Checking for field exsistence is not necessary here because if a field is missing there is no additional information
  			// that we would be able to display if we continued execution. Instead, any missing fields will throw and the catch will display the proper message.
  			try {
  				// If any of these throw, can't get status because the result makes no sense.
  				StatusObjectReader statusObjClient = statusObj["client"].get_obj();
  				StatusObjectReader statusObjClientDatabaseStatus = statusObjClient["database_status"].get_obj();
  
  				bool available = statusObjClientDatabaseStatus["available"].get_bool();
  
  				// Database unavailable
  				if (!available){
  					printf("%s", "The database is unavailable; type `status' for more information.\n");
  				}
  				else {
  					try {
  						bool healthy = statusObjClientDatabaseStatus["healthy"].get_bool();
  
  						// Database available without issues
  						if (healthy) {
  							if (displayDatabaseAvailable) {
  								printf("The database is available.\n");
  							}
  						}
  						else {  // Database running but with issues
  							printf("The database is available, but has issues (type 'status' for more information).\n");
  						}
  					}
  					catch (std::runtime_error& e){
  						printf("The database is available, but has issues (type 'status' for more information).\n");
  					}
  				}
  
  				bool upToDate;
  				if (!statusObjClient.get("cluster_file.up_to_date", upToDate) || !upToDate){
  					printf("WARNING: The cluster file is not up to date. Type 'status' for more information.\n");
  				}
  			}
  			catch (std::runtime_error& e){
  				printf("Unable to determine database state, type 'status' for more information.\n");
  			}
  
  		}
  
  		// status JSON
  		else if (level == StatusClient::JSON) {
  			printf("%s\n", json_spirit::write_string(json_spirit::mValue(statusObj.obj()), json_spirit::Output_options::pretty_print).c_str());
  		}
  	}
  	catch (Error &e){
  		if (hideErrorMessages)
  			return;
  		if (level == StatusClient::MINIMAL) {
  			printf("Unable to determine database state, type 'status' for more information.\n");
  		}
  		else if (level == StatusClient::JSON) {
  			printf("Could not retrieve status json.\n\n");
  		}
  		else {
  			printf("Could not retrieve status, type 'status json' for more information.\n");
  		}
  	}
  	return;
  }
  
  int printStatusFromJSON( std::string const& jsonFileName ) {
  	try {
  		json_spirit::mValue value;
  		json_spirit::read_string( readFileBytes( jsonFileName, 10000000 ), value );
  
  		printStatus(value.get_obj(), StatusClient::DETAILED, false, true);
  
  		return 0;
  	} catch (std::exception& e) {
  		printf("Exception printing status: %s\n", e.what());
  		return 1;
  	} catch (Error& e) {
  		printf("Error printing status: %d %s\n", e.code(), e.what());
  		return 2;
  	} catch (...) {
  		printf("Unknown exception printing status.\n");
  		return 3;
  	}
  }
  
  ACTOR Future<Void> timeWarning( double when, const char* msg ) {
  	Void _ = wait( delay(when) );
  	fputs( msg, stderr );
  
  	return Void();
  }
  
  ACTOR Future<Void> checkStatus(Future<Void> f, Reference<ClusterConnectionFile> clusterFile, bool displayDatabaseAvailable = true) {
  	Void _ = wait(f);
  	StatusObject s = wait(StatusClient::statusFetcher(clusterFile));
  	printf("\n");
  	printStatus(s, StatusClient::MINIMAL, displayDatabaseAvailable);
  	printf("\n");
  	return Void();
  }
  
  ACTOR template <class T> Future<T> makeInterruptable( Future<T> f ) {
  	Future<Void> interrupt = LineNoise::onKeyboardInterrupt();
  	choose {
  		when (T t = wait(f)) { return t; }
  		when (Void _ = wait(interrupt)) {
  			f.cancel();
  			throw operation_cancelled();
  		}
  	}
  }
  
  ACTOR Future<Database> openDatabase( Reference<ClusterConnectionFile> ccf, Reference<Cluster> cluster, Standalone<StringRef> name, bool doCheckStatus ) {
  	state Database db = wait( cluster->createDatabase(name) );
  	if (doCheckStatus) {
  		Void _ = wait( makeInterruptable( checkStatus( Void(), ccf )) );
  	}
  	return db;
  }
  
  ACTOR Future<Void> commitTransaction( Reference<ReadYourWritesTransaction> tr ) {
  	Void _ = wait( makeInterruptable( tr->commit() ) );
  	auto ver = tr->getCommittedVersion();
  	if (ver != invalidVersion)
  		printf("Committed (%" PRId64 ")\n", ver);
  	else
  		printf("Nothing to commit\n");
  	return Void();
  }
  
  ACTOR Future<bool> configure( Database db, std::vector<StringRef> tokens, Reference<ClusterConnectionFile> ccf, LineNoise* linenoise, Future<Void> warn ) {
  	state ConfigurationResult::Type result;
  	if (tokens.size() < 2)
  		result = ConfigurationResult::NO_OPTIONS_PROVIDED;
  	else {
  		state Optional<ConfigureAutoResult> conf;
  		if( tokens[1] == LiteralStringRef("auto") ) {
  			StatusObject s = wait( makeInterruptable(StatusClient::statusFetcher( ccf )) );
  			if(warn.isValid())
  				warn.cancel();
  
  			conf = parseConfig(s);
  
  			if (!conf.get().isValid()) {
  				printf("Unable to provide advice for the current configuration.\n");
  				return true;
  			}
  
  			bool noChanges = conf.get().old_replication == conf.get().auto_replication &&
  				conf.get().old_logs == conf.get().auto_logs &&
  				conf.get().old_proxies == conf.get().auto_proxies &&
  				conf.get().old_resolvers == conf.get().auto_resolvers &&
  				conf.get().old_processes_with_transaction == conf.get().auto_processes_with_transaction &&
  				conf.get().old_machines_with_transaction == conf.get().auto_machines_with_transaction;
  
  			bool noDesiredChanges = noChanges &&
  				conf.get().old_logs == conf.get().desired_logs &&
  				conf.get().old_proxies == conf.get().desired_proxies &&
  				conf.get().old_resolvers == conf.get().desired_resolvers;
  
  			std::string outputString;
  
  			outputString += "\nYour cluster has:\n\n";
  			outputString += format("  processes %d\n", conf.get().processes);
  			outputString += format("  machines  %d\n", conf.get().machines);
  
  			if(noDesiredChanges) outputString += "\nConfigure recommends keeping your current configuration:\n\n";
  			else if(noChanges) outputString += "\nConfigure cannot modify the configuration because some parameters have been set manually:\n\n";
  			else outputString += "\nConfigure recommends the following changes:\n\n";
  			outputString +=        " ------------------------------------------------------------------- \n";
  			outputString +=        "| parameter                   | old              | new              |\n";
  			outputString +=        " ------------------------------------------------------------------- \n";
  			outputString += format("| replication                 | %16s | %16s |\n", conf.get().old_replication.c_str(), conf.get().auto_replication.c_str());
  			outputString += format("| logs                        | %16d | %16d |", conf.get().old_logs, conf.get().auto_logs);
  			outputString += conf.get().auto_logs != conf.get().desired_logs ? format(" (manually set; would be %d)\n", conf.get().desired_logs) : "\n";
  			outputString += format("| proxies                     | %16d | %16d |", conf.get().old_proxies, conf.get().auto_proxies);
  			outputString += conf.get().auto_proxies != conf.get().desired_proxies ? format(" (manually set; would be %d)\n", conf.get().desired_proxies) : "\n";
  			outputString += format("| resolvers                   | %16d | %16d |", conf.get().old_resolvers, conf.get().auto_resolvers);
  			outputString += conf.get().auto_resolvers != conf.get().desired_resolvers ? format(" (manually set; would be %d)\n", conf.get().desired_resolvers) : "\n";
  			outputString += format("| transaction-class processes | %16d | %16d |\n", conf.get().old_processes_with_transaction, conf.get().auto_processes_with_transaction);
  			outputString += format("| transaction-class machines  | %16d | %16d |\n", conf.get().old_machines_with_transaction, conf.get().auto_machines_with_transaction);
  			outputString +=        " ------------------------------------------------------------------- \n\n";
  
  			std::printf("%s", outputString.c_str());
  
  			if(noChanges)
  				return false;
  
  			// TODO: disable completion
  			Optional<std::string> line = wait( linenoise->read("Would you like to make these changes? [y/n]> ") );
  
  			if(!line.present() || (line.get() != "y" && line.get() != "Y")) {
  				return false;
  			}
  		}
  
  		ConfigurationResult::Type r  = wait( makeInterruptable( changeConfig( db, std::vector<StringRef>(tokens.begin()+1,tokens.end()), conf) ) );
  		result = r;
  	}
  
  	// Real errors get thrown from makeInterruptable and printed by the catch block in cli(), but
  	// there are various results specific to changeConfig() that we need to report:
  	bool ret;
  	switch(result) {
  	case ConfigurationResult::NO_OPTIONS_PROVIDED:
  	case ConfigurationResult::CONFLICTING_OPTIONS:
  	case ConfigurationResult::UNKNOWN_OPTION:
  	case ConfigurationResult::INCOMPLETE_CONFIGURATION:
  		printUsage(tokens[0]);
  		ret = true;
  		break;
  
  	case ConfigurationResult::DATABASE_ALREADY_CREATED:
  		printf("ERROR: Database already exists! To change configuration, don't say `new'\n");
  		ret=true;
  		break;
  	case ConfigurationResult::DATABASE_CREATED:
  		printf("Database created\n");
  		ret=false;
  		break;
  	case ConfigurationResult::SUCCESS:
  		printf("Configuration changed\n");
  		ret=false;
  		break;
  	default:
  		ASSERT(false);
  		ret=true;
  	};
  	return ret;
  }
  
  // FIXME: Factor address parsing from coordinators, include, exclude
  
  ACTOR Future<bool> coordinators( Database db, std::vector<StringRef> tokens, bool isClusterTLS ) {
  	state StringRef setName;
  	StringRef nameTokenBegin = LiteralStringRef("description=");
  	for(auto t = tokens.begin()+1; t != tokens.end(); ++t)
  		if (t->startsWith(nameTokenBegin)) {
  			setName = t->substr(nameTokenBegin.size());
  			std::copy( t+1, tokens.end(), t );
  			tokens.resize( tokens.size()-1 );
  			break;
  		}
  
  	bool automatic = tokens.size() == 2 && tokens[1] == LiteralStringRef("auto");
  
  	state Reference<IQuorumChange> change;
  	if (tokens.size()==1 && setName.size()) {
  		change = noQuorumChange();
  	} else if (automatic) {
  		// Automatic quorum change
  		change = autoQuorumChange();
  	} else {
  		state std::set<NetworkAddress> addresses;
  		state std::vector<StringRef>::iterator t;
  		for(t = tokens.begin()+1; t != tokens.end(); ++t) {
  			try {
  				// SOMEDAY: Check for keywords
  				auto const& addr = NetworkAddress::parse( t->toString() );
  				if( addr.isTLS() != isClusterTLS ) {
  					printf("ERROR: cannot use coordinator with incompatible TLS state: `%s'\n", t->toString().c_str());
  					return true;
  				}
  				if (addresses.count(addr)){
  					printf("ERROR: passed redundant coordinators: `%s'\n", addr.toString().c_str());
  					return true;
  				}
  				addresses.insert(addr);
  			} catch (Error& e) {
  				if (e.code() == error_code_connection_string_invalid) {
  					printf("ERROR: '%s' is not a valid network endpoint address\n", t->toString().c_str());
  					return true;
  				}
  				throw;
  			}
  		}
  
  		std::vector<NetworkAddress> addressesVec(addresses.begin(), addresses.end());
  		change = specifiedQuorumChange( addressesVec );
  	}
  	if(setName.size()) change = nameQuorumChange( setName.toString(), change );
  
  	CoordinatorsResult::Type r = wait( makeInterruptable( changeQuorum( db, change ) ) );
  
  	// Real errors get thrown from makeInterruptable and printed by the catch block in cli(), but
  	// there are various results specific to changeConfig() that we need to report:
  	bool err = true;
  	switch(r) {
  	case CoordinatorsResult::INVALID_NETWORK_ADDRESSES:
  		printf("ERROR: The specified network addresses are invalid\n");
  		break;
  	case CoordinatorsResult::SAME_NETWORK_ADDRESSES:
  		printf("No change (existing configuration satisfies request)\n");
  		err = false;
  		break;
  	case CoordinatorsResult::NOT_COORDINATORS:
  		printf("ERROR: Coordination servers are not running on the specified network addresses\n");
  		break;
  	case CoordinatorsResult::DATABASE_UNREACHABLE:
  		printf("ERROR: Database unreachable\n");
  		break;
  	case CoordinatorsResult::BAD_DATABASE_STATE:
  		printf("ERROR: The database is in an unexpected state from which changing coordinators might be unsafe\n");
  		break;
  	case CoordinatorsResult::COORDINATOR_UNREACHABLE:
  		printf("ERROR: One of the specified coordinators is unreachable\n");
  		break;
  	case CoordinatorsResult::SUCCESS:
  		printf("Coordination state changed\n");
  		err=false;
  		break;
  	case CoordinatorsResult::NOT_ENOUGH_MACHINES:
  		printf("ERROR: Too few fdbserver machines to provide coordination at the current redundancy level\n");
  		break;
  	default:
  		ASSERT(false);
  	};
  	return err;
  }
  
  ACTOR Future<bool> include( Database db, std::vector<StringRef> tokens ) {
  	std::vector<AddressExclusion> addresses;
  	if (tokens.size() == 2 && tokens[1] == LiteralStringRef("all"))
  		addresses.push_back( AddressExclusion() );
  	else {
  		for(auto t = tokens.begin()+1; t != tokens.end(); ++t) {
  			auto a = AddressExclusion::parse( *t );
  			if (!a.isValid()) {
  				printf("ERROR: '%s' is not a valid network endpoint address\n", t->toString().c_str());
  				if( t->toString().find(":tls") != std::string::npos )
  					printf("        Do not include the `:tls' suffix when naming a process\n");
  				return true;
  			}
  			addresses.push_back( a );
  		}
  	}
  
  	Void _ = wait( makeInterruptable(includeServers(db, addresses)) );
  	return false;
  };
  
  ACTOR Future<bool> exclude( Database db, std::vector<StringRef> tokens, Reference<ClusterConnectionFile> ccf, Future<Void> warn ) {
  	if (tokens.size() <= 1) {
  		vector<AddressExclusion> excl = wait( makeInterruptable(getExcludedServers(db)) );
  		if (!excl.size()) {
  			printf("There are currently no servers excluded from the database.\n"
  				   "To learn how to exclude a server, type `help exclude'.\n");
  			return false;
  		}
  
  		printf("There are currently %zu servers or processes being excluded from the database:\n", excl.size());
  		for(auto& e : excl)
  			printf("  %s\n", e.toString().c_str());
  
  		printf("To find out whether it is safe to remove one or more of these\n"
  			   "servers from the cluster, type `exclude <addresses>'.\n"
  			   "To return one of these servers to the cluster, type `include <addresses>'.\n");
  	} else {
  		state std::vector<AddressExclusion> addresses;
  		state std::set<AddressExclusion> exclusions;
  		bool force = false;
  		for(auto t = tokens.begin()+1; t != tokens.end(); ++t) {
  			if(*t == LiteralStringRef("FORCE")) {
  				force = true;
  			} else {
  				auto a = AddressExclusion::parse( *t );
  				if (!a.isValid()) {
  					printf("ERROR: '%s' is not a valid network endpoint address\n", t->toString().c_str());
  					if( t->toString().find(":tls") != std::string::npos )
  						printf("        Do not include the `:tls' suffix when naming a process\n");
  					return true;
  				}
  				addresses.push_back( a );
  				exclusions.insert( a );
  			}
  		}
  
  		if(!force) {
  			StatusObject status = wait( makeInterruptable( StatusClient::statusFetcher( ccf ) ) );
  
  			state std::string errorString = "ERROR: Could not calculate the impact of this exclude on the total free space in the cluster.\n"
  											"Please try the exclude again in 30 seconds.\n"
  										    "Type `exclude FORCE <ADDRESS>*' to exclude without checking free space.\n";
  
  			StatusObjectReader statusObj(status);
  
  			StatusObjectReader statusObjCluster;
  			if (!statusObj.get("cluster", statusObjCluster)) {
  				printf("%s", errorString.c_str());
  				return true;
  			}
  
  			StatusObjectReader processesMap;
  			if (!statusObjCluster.get("processes", processesMap)) {
  				printf("%s", errorString.c_str());
  				return true;
  			}
  
  			state int ssTotalCount = 0;
  			state int ssExcludedCount = 0;
  			state double worstFreeSpaceRatio = 1.0;
  			try {
  				for (auto proc : processesMap.obj()){
  					bool storageServer = false;
  					StatusArray rolesArray = proc.second.get_obj()["roles"].get_array();
  					for (StatusObjectReader role : rolesArray) {
  						if (role["role"].get_str() == "storage") {
  							storageServer = true;
  							break;
  						}
  					}
  					// Skip non-storage servers in free space calculation
  					if (!storageServer)
  						continue;
  
  					StatusObjectReader process(proc.second);
  					std::string addrStr;
  					if (!process.get("address", addrStr)) {
  						printf("%s", errorString.c_str());
  						return true;
  					}
  					NetworkAddress addr = NetworkAddress::parse(addrStr);
  					bool excluded = (process.has("excluded") && process.last().get_bool()) || addressExcluded(exclusions, addr);
  					ssTotalCount++;
  					if (excluded)
  						ssExcludedCount++;
  
  					if(!excluded) {
  						StatusObjectReader disk;
  						if (!process.get("disk", disk)) {
  							printf("%s", errorString.c_str());
  							return true;
  						}
  
  						int64_t total_bytes;
  						if (!disk.get("total_bytes", total_bytes)) {
  							printf("%s", errorString.c_str());
  							return true;
  						}
  
  						int64_t free_bytes;
  						if (!disk.get("free_bytes", free_bytes)) {
  							printf("%s", errorString.c_str());
  							return true;
  						}
  
  						worstFreeSpaceRatio = std::min(worstFreeSpaceRatio, double(free_bytes)/total_bytes);
  					}
  				}
  			}
  			catch (...)  // std::exception
  			{
  				printf("%s", errorString.c_str());
  				return true;
  			}
  
  			if( ssExcludedCount==ssTotalCount || (1-worstFreeSpaceRatio)*ssTotalCount/(ssTotalCount-ssExcludedCount) > 0.9 ) {
  				printf("ERROR: This exclude may cause the total free space in the cluster to drop below 10%%.\n"
  					   "Type `exclude FORCE <ADDRESS>*' to exclude without checking free space.\n");
  				return true;
  			}
  		}
  
  		Void _ = wait( makeInterruptable(excludeServers(db,addresses)) );
  
  		printf("Waiting for state to be removed from all excluded servers. This may take a while.\n");
  		printf("(Interrupting this wait with CTRL+C will not cancel the data movement.)\n");
  
  		if(warn.isValid())
  			warn.cancel();
  		Void _ = wait( makeInterruptable(waitForExcludedServers(db,addresses)) );
  
  		std::vector<ProcessData> workers = wait( makeInterruptable(getWorkers(db)) );
  		std::map<uint32_t, std::set<uint16_t>> workerPorts;
  		for(auto addr : workers)
  			workerPorts[addr.address.ip].insert(addr.address.port);
  
  		// Print a list of all excluded addresses that don't have a corresponding worker
  		std::vector<AddressExclusion> absentExclusions;
  		for(auto addr : addresses) {
  			auto worker = workerPorts.find(addr.ip);
  			if(worker == workerPorts.end())
  				absentExclusions.push_back(addr);
  			else if(addr.port > 0 && worker->second.count(addr.port) == 0)
  				absentExclusions.push_back(addr);
  		}
  
  		if(!absentExclusions.empty()) {
  			printf("\nWARNING: the following servers were not present in the cluster. Be sure that you\n"
  					"excluded the correct machines or processes before removing them from the cluster:\n");
  			for(auto addr : absentExclusions) {
  				if(addr.port == 0)
  					printf("  %s\n", toIPString(addr.ip).c_str());
  				else
  					printf("  %s\n", addr.toString().c_str());
  			}
  
  			printf("\n");
  		}
  		else
  			printf("\nIt is now safe to remove these machines or processes from the cluster.\n");
  
  		bool foundCoordinator = false;
  		auto ccs = ClusterConnectionFile( ccf->getFilename() ).getConnectionString();
  		for( auto& c : ccs.coordinators()) {
  			if (std::count( addresses.begin(), addresses.end(), AddressExclusion(c.ip, c.port) ) ||
  					std::count( addresses.begin(), addresses.end(), AddressExclusion(c.ip) )) {
  				printf("WARNING: %s is a coordinator!\n", c.toString().c_str());
  				foundCoordinator = true;
  			}
  		}
  		if (foundCoordinator)
  			printf("Type `help coordinators' for information on how to change the\n"
  				   "cluster's coordination servers before removing them.\n");
  	}
  	return false;
  }
  
  ACTOR Future<bool> setClass( Database db, std::vector<StringRef> tokens ) {
  	if( tokens.size() == 1 ) {
  		vector<ProcessData> _workers = wait( makeInterruptable(getWorkers(db)) );
  		auto workers = _workers; // strip const
  
  		if (!workers.size()) {
  			printf("No processes are registered in the database.\n");
  			return false;
  		}
  
  		std::sort(workers.begin(), workers.end(), ProcessData::sort_by_address());
  
  		printf("There are currently %zu processes in the database:\n", workers.size());
  		for(auto& w : workers)
  			printf("  %s: %s (%s)\n", w.address.toString().c_str(), w.processClass.toString().c_str(), w.processClass.sourceString().c_str());
  		return false;
  	}
  
  	AddressExclusion addr = AddressExclusion::parse( tokens[1] );
  	if (!addr.isValid()) {
  		printf("ERROR: '%s' is not a valid network endpoint address\n", tokens[1].toString().c_str());
  		if( tokens[1].toString().find(":tls") != std::string::npos )
  			printf("        Do not include the `:tls' suffix when naming a process\n");
  		return true;
  	}
  
  	ProcessClass processClass(tokens[2].toString(), ProcessClass::DBSource);
  	if(processClass.classType() == ProcessClass::InvalidClass && tokens[2] != LiteralStringRef("default")) {
  		printf("ERROR: '%s' is not a valid process class\n", tokens[2].toString().c_str());
  		return true;
  	}
  
  	Void _ = wait( makeInterruptable(setClass(db,addr,processClass)) );
  	return false;
  };
  
  
  Reference<ReadYourWritesTransaction> getTransaction(Database db, Reference<ReadYourWritesTransaction> &tr, FdbOptions *options, bool intrans) {
  	if(!tr || !intrans) {
  		tr = Reference<ReadYourWritesTransaction>(new ReadYourWritesTransaction(db));
  		options->apply(tr);
  	}
  
  	return tr;
  }
  
  std::string new_completion(const char *base, const char *name) {
  	return format("%s%s ", base, name);
  }
  
  void comp_generator(const char* text, bool help, std::vector<std::string>& lc) {
  	std::map<std::string, CommandHelp>::const_iterator iter;
  	int len = strlen(text);
  
  	const char* helpExtra[] = {"escaping", "options", NULL};
  
  	const char** he = helpExtra;
  
  	for (auto iter = helpMap.begin(); iter != helpMap.end(); ++iter) {
  		const char* name = (*iter).first.c_str();
  		if (!strncmp(name, text, len)) {
  			lc.push_back( new_completion(help ? "help " : "", name) );
  		}
  	}
  
  	if (help) {
  		while (*he) {
  			const char* name = *he;
  			he++;
  			if (!strncmp(name, text, len))
  				lc.push_back( new_completion("help ", name) );
  		}
  	}
  }
  
  void cmd_generator(const char* text, std::vector<std::string>& lc) {
  	comp_generator(text, false, lc);
  }
  
  void help_generator(const char* text, std::vector<std::string>& lc) {
  	comp_generator(text, true, lc);
  }
  
  void option_generator(const char* text, const char *line, std::vector<std::string>& lc) {
  	int len = strlen(text);
  
  	for (auto iter = validOptions.begin(); iter != validOptions.end(); ++iter) {
  		const char* name = (*iter).c_str();
  		if (!strncmp(name, text, len)) {
  			lc.push_back( new_completion(line, name) );
  		}
  	}
  }
  
  void array_generator(const char* text, const char *line, const char** options, std::vector<std::string>& lc) {
  	const char** iter = options;
  	int len = strlen(text);
  
  	while (*iter) {
  		const char* name = *iter;
  		iter++;
  		if (!strncmp(name, text, len)) {
  			lc.push_back( new_completion(line, name) );
  		}
  	}
  }
  
  void onoff_generator(const char* text, const char *line, std::vector<std::string>& lc) {
  	const char* opts[] = {"on", "off", NULL};
  	array_generator(text, line, opts, lc);
  }
  
  void configure_generator(const char* text, const char *line, std::vector<std::string>& lc) {
  	const char* opts[] = {"new", "single", "double", "triple", "three_data_hall", "three_datacenter", "ssd", "ssd-1", "ssd-2", "memory", "proxies=", "logs=", "resolvers=", NULL};
  	array_generator(text, line, opts, lc);
  }
  
  void status_generator(const char* text, const char *line, std::vector<std::string>& lc) {
  	const char* opts[] = {"minimal", "details", "json", NULL};
  	array_generator(text, line, opts, lc);
  }
  
  void kill_generator(const char* text, const char *line, std::vector<std::string>& lc) {
  	const char* opts[] = {"all", "list", NULL};
  	array_generator(text, line, opts, lc);
  }
  
  void fdbcli_comp_cmd(std::string const& text, std::vector<std::string>& lc) {
  	bool err, partial;
  	std::string whole_line = text;
  	auto parsed = parseLine(whole_line, err, partial);
  	if (err || partial) //If there was an error, or we are partially through a quoted sequence
  		return;
  
  	auto tokens = parsed.back();
  	int count = tokens.size();
  
  	// for(int i = 0; i < count; i++) {
  	// 	printf("Token (%d): `%s'\n", i, tokens[i].toString().c_str());
  	// }
  
  	std::string ntext = "";
  	std::string base_input = text;
  
  	// If there is a token and the input does not end in a space
  	if (count && text.size() > 0 && text[text.size() - 1] != ' ') {
  		count--; //Ignore the last token for purposes of later code
  		ntext = tokens.back().toString();
  		base_input = whole_line.substr(0, whole_line.rfind(ntext));
  	}
  
  	// printf("final text (%d tokens): `%s' & `%s'\n", count, base_input.c_str(), ntext.c_str());
  
  	if (!count) {
  		cmd_generator(ntext.c_str(), lc);
  		return;
  	}
  
  	if (tokencmp(tokens[0], "help") && count == 1) {
  		help_generator(ntext.c_str(), lc);
  		return;
  	}
  
  	if (tokencmp(tokens[0], "option")) {
  		if (count == 1)
  			onoff_generator(ntext.c_str(), base_input.c_str(), lc);
  		if (count == 2)
  			option_generator(ntext.c_str(), base_input.c_str(), lc);
  	}
  
  	if (tokencmp(tokens[0], "writemode") && count == 1) {
  		onoff_generator(ntext.c_str(), base_input.c_str(), lc);
  	}
  
  	if (tokencmp(tokens[0], "configure")) {
  		configure_generator(ntext.c_str(), base_input.c_str(), lc);
  	}
  
  	if (tokencmp(tokens[0], "status") && count == 1) {
  		status_generator(ntext.c_str(), base_input.c_str(), lc);
  	}
  
  	if (tokencmp(tokens[0], "kill") && count == 1) {
  		kill_generator(ntext.c_str(), base_input.c_str(), lc);
  	}
  }
  
  void LogCommand(std::string line, UID randomID, std::string errMsg) {
  	printf("%s\n", errMsg.c_str());
  	TraceEvent(SevInfo, "CLICommandLog", randomID).detail("command", printable(StringRef(line))).detail("error", printable(StringRef(errMsg)));
  }
  
  struct CLIOptions {
  	std::string program_name;
  	int exit_code;
  
  	std::string commandLine;
  
  	std::string clusterFile;
  	bool trace;
  	std::string traceDir;
  	int exit_timeout;
  	Optional<std::string> exec;
  	bool initialStatusCheck;
  	std::string tlsCertPath;
  	std::string tlsKeyPath;
  	std::string tlsVerifyPeers;
  	std::string tlsCAPath;
  	std::string tlsPassword;
  
  	CLIOptions( int argc, char* argv[] )
  		: trace(false),
  		 exit_timeout(0),
  		 initialStatusCheck(true),
  		 exit_code(-1)
  	{
  		program_name = argv[0];
  		for (int a = 0; a<argc; a++) {
  			if (a) commandLine += ' ';
  			commandLine += argv[a];
  		}
  
  		CSimpleOpt args(argc, argv, g_rgOptions);
  
  		while (args.Next()) {
  			int ec = processArg(args);
  			if (ec != -1) {
  				exit_code = ec;
  				return;
  			}
  		}
  		if (exit_timeout && !exec.present()) {
  			fprintf(stderr, "ERROR: --timeout may only be specified with --exec\n");
  			exit_code = 1;
  			return;
  		}
  	}
  
  	int processArg(CSimpleOpt& args) {
  		if (args.LastError() != SO_SUCCESS) {
  			printProgramUsage(program_name.c_str());
  			return 1;
  		}
  
  		switch (args.OptionId()) {
  			case OPT_CONNFILE:
  				clusterFile = args.OptionArg();
  				break;
  			case OPT_TRACE:
  				trace = true;
  				break;
  			case OPT_TRACE_DIR:
  				traceDir = args.OptionArg();
  				break;
  			case OPT_TIMEOUT: {
  				char *endptr;
  				exit_timeout = strtoul((char*)args.OptionArg(), &endptr, 10);
  				if (*endptr != '\0') {
  					fprintf(stderr, "ERROR: invalid timeout %s\n", args.OptionArg());
  					return 1;
  				}
  				break;
  			}
  			case OPT_EXEC:
  				exec = args.OptionArg();
  				break;
  			case OPT_NO_STATUS:
  				initialStatusCheck = false;
  				break;
  
  			// TLS Options
  			case TLSOptions::OPT_TLS_PLUGIN:
  				try {
  					setNetworkOption(FDBNetworkOptions::TLS_PLUGIN, std::string(args.OptionArg()));
  				} catch( Error& e ) {
  					fprintf(stderr, "ERROR: cannot load TLS plugin `%s' (%s)\n", args.OptionArg(), e.what());
  					return 1;
  				}
  				break;
  			case TLSOptions::OPT_TLS_CERTIFICATES:
  				tlsCertPath = args.OptionArg();
  				break;
  			case TLSOptions::OPT_TLS_CA_FILE:
  				tlsCAPath = args.OptionArg();
  				break;
  			case TLSOptions::OPT_TLS_KEY:
  				tlsKeyPath = args.OptionArg();
  				break;
  			case TLSOptions::OPT_TLS_PASSWORD:
  				tlsPassword = args.OptionArg();
  				break;
  			case TLSOptions::OPT_TLS_VERIFY_PEERS:
  				tlsVerifyPeers = args.OptionArg();
  				break;
  			case OPT_HELP:
  				printProgramUsage(program_name.c_str());
  				return 0;
  			case OPT_STATUS_FROM_JSON:
  				return printStatusFromJSON(args.OptionArg());
  			case OPT_VERSION:
  				printVersion();
  				return FDB_EXIT_SUCCESS;
  		}
  		return -1;
  	}
  };
  
  ACTOR template <class T>
  Future<T> stopNetworkAfter( Future<T> what ) {
  	try {
  		T t = wait(what);
  		g_network->stop();
  		return t;
  	} catch (...) {
  		g_network->stop();
  		throw;
  	}
  }
  
  ACTOR Future<int> cli(CLIOptions opt, LineNoise* plinenoise) {
  	state LineNoise& linenoise = *plinenoise;
  	state bool connected = false;
  	state bool opened = false;
  	state bool intrans = false;
  
  	state Database db;
  	state Reference<Cluster> cluster;
  	state Reference<ReadYourWritesTransaction> tr;
  
  	state bool writeMode = false;
  
  	state std::string clusterConnectString;
  	state std::map<Key,Value> address_interface;
  
  	state FdbOptions globalOptions;
  	state FdbOptions activeOptions;
  
  	state FdbOptions *options = &globalOptions;
  
  	state const char *database = "DB";
  	state Standalone<StringRef> openDbName = StringRef(database);
  
  	state Reference<ClusterConnectionFile> ccf;
  
  	state std::pair<std::string, bool> resolvedClusterFile = ClusterConnectionFile::lookupClusterFileName( opt.clusterFile );
  	try {
  		ccf = Reference<ClusterConnectionFile>( new ClusterConnectionFile( resolvedClusterFile.first ) );
  	} catch (Error& e) {
  		fprintf(stderr, "%s\n", ClusterConnectionFile::getErrorString(resolvedClusterFile, e).c_str());
  		return 1;
  	}
  
  	// Ordinarily, this is done when the network is run. However, network thread should be set before TraceEvents are logged. This thread will eventually run the network, so call it now.
  	TraceEvent::setNetworkThread();
  
  	try {
  		cluster = Cluster::createCluster(ccf->getFilename().c_str(), -1);
  		connected = true;
  		if (!opt.exec.present())
  			printf("Using cluster file `%s'.\n", ccf->getFilename().c_str());
  	}
  	catch (Error& e) {
  		printf("ERROR: %s (%d)\n", e.what(), e.code());
  		printf("Unable to connect to cluster from `%s'\n", ccf->getFilename().c_str());
  		return 1;
  	}
  
  	if (opt.trace) {
  		TraceEvent("CLIProgramStart")
  			.detail("SourceVersion", getHGVersion())
  			.detail("Version", FDB_VT_VERSION)
  			.detail("PackageName", FDB_VT_PACKAGE_NAME)
  			.detailf("ActualTime", "%lld", DEBUG_DETERMINISM ? 0 : time(NULL))
  			.detail("ClusterFile", ccf->getFilename().c_str())
  			.detail("ConnectionString", ccf->getConnectionString().toString())
  			.detail("CommandLine", opt.commandLine)
  			.trackLatest("ProgramStart");
  	}
  
  	if (connected && database) {
  		try {
  			Database _db = wait( openDatabase( ccf, cluster, openDbName, !opt.exec.present() && opt.initialStatusCheck ) );
  			db = _db;
  			tr = Reference<ReadYourWritesTransaction>();
  			opened = true;
  			if (!opt.exec.present() && !opt.initialStatusCheck)
  				printf("\n");
  		} catch (Error& e) {
  			if(e.code() != error_code_actor_cancelled) {
  				printf("ERROR: %s (%d)\n", e.what(), e.code());
  				printf("Unable to open database `%s'\n", database);
  			}
  			return 1;
  		}
  	}
  
  	if (!opt.exec.present()) {
  		printf("Welcome to the fdbcli. For help, type `help'.\n");
  
  		validOptions = options->getValidOptions();
  
  	}
  
  	state bool is_error = false;
  
  	state Future<Void> warn;
  	loop {
  		if (warn.isValid())
  			warn.cancel();
  
  		state std::string line;
  
  		if (opt.exec.present()) {
  			line = opt.exec.get();
  		} else {
  			Optional<std::string> rawline = wait( linenoise.read("fdb> ") );
  			if (!rawline.present()) {
  				printf("\n");
  				return 0;
  			}
  			line = rawline.get();
  
  			if (!line.size())
  				continue;
  
  			// Don't put dangerous commands in the command history
  			if (line.find("writemode") == std::string::npos && line.find("expensive_data_check") == std::string::npos)
  				linenoise.historyAdd(line);
  		}
  
  		warn = checkStatus( timeWarning(5.0, "\nWARNING: Long delay (Ctrl-C to interrupt)\n"), ccf );
  
  		try {
  			state UID randomID = g_random->randomUniqueID();
  			TraceEvent(SevInfo, "CLICommandLog", randomID).detail("command", printable(StringRef(line)));
  
  			bool malformed, partial;
  			state std::vector<std::vector<StringRef>> parsed = parseLine(line, malformed, partial);
  			if (malformed) LogCommand(line, randomID, "ERROR: malformed escape sequence");
  			if (partial) LogCommand(line, randomID, "ERROR: unterminated quote");
  			if (malformed || partial) {
  				if (parsed.size() > 0) {
  					// Denote via a special token that the command was a parse failure.
  					auto& last_command = parsed.back();
  					last_command.insert(last_command.begin(), StringRef((const uint8_t*)"parse_error", strlen("parse_error")));
  				}
  			}
  
  			state bool multi = parsed.size() > 1;
  			is_error = false;
  
  			state std::vector<std::vector<StringRef>>::iterator iter;
  			for (iter = parsed.begin(); iter != parsed.end(); ++iter) {
  				state std::vector<StringRef> tokens = *iter;
  
  				if (is_error) {
  					printf("WARNING: the previous command failed, the remaining commands will not be executed.\n");
  					break;
  				}
  
  				if (!tokens.size())
  					continue;
  
  				if (tokencmp(tokens[0], "parse_error")) {
  					printf("ERROR: Command failed to completely parse.\n");
  					if (tokens.size() > 1) {
  						printf("ERROR: Not running partial or malformed command:");
  						for (auto t = tokens.begin() + 1; t != tokens.end(); ++t)
  							printf(" %s", formatStringRef(*t, true).c_str());
  						printf("\n");
  					}
  					is_error = true;
  					continue;
  				}
  
  				if (multi) {
  					printf(">>>");
  					for (auto t = tokens.begin(); t != tokens.end(); ++t)
  						printf(" %s", formatStringRef(*t, true).c_str());
  					printf("\n");
  				}
  
  				if (!helpMap.count(tokens[0].toString()) && !hiddenCommands.count(tokens[0].toString())) {
  					printf("ERROR: Unknown command `%s'. Try `help'?\n", formatStringRef(tokens[0]).c_str());
  					is_error = true;
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "exit") || tokencmp(tokens[0], "quit")) {
  					return 0;
  				}
  
  				if (tokencmp(tokens[0], "help")) {
  					if (tokens.size() == 1) {
  						printHelpOverview();
  					} else if (tokens.size() == 2) {
  						if (tokencmp(tokens[1], "escaping"))
  							printf(
  								"\n"
  								"When parsing commands, fdbcli considers a space to delimit individual tokens.\n"
  								"To include a space in a single token, you may either enclose the token in\n"
  								"quotation marks (\"hello world\"), prefix the space with a backslash\n"
  								"(hello\\ world), or encode the space as a hex byte (hello\\x20world).\n"
  								"\n"
  								"To include a literal quotation mark in a token, precede it with a backslash\n"
  								"(\\\"hello\\ world\\\").\n"
  								"\n"
  								"To express a binary value, encode each byte as a two-digit hex byte, preceded\n"
  								"by \\x (e.g. \\x20 for a space character, or \\x0a\\x00\\x00\\x00 for a\n"
  								"32-bit, little-endian representation of the integer 10).\n"
  								"\n"
  								"All keys and values are displayed by the fdbcli with non-printable characters\n"
  								"and spaces encoded as two-digit hex bytes.\n\n");
  						else if (tokencmp(tokens[1], "options")) {
  							printf(
  								"\n"
  								"The following options are available to be set using the `option' command:\n"
  								"\n");
  							options->printHelpString();
  						}
  						else if (tokencmp(tokens[1], "help"))
  							printHelpOverview();
  						else
  							printHelp(tokens[1]);
  					} else
  						printf("Usage: help [topic]\n");
  					continue;
  				}
  
  				if (!connected) {
  					printf("ERROR: Not connected\n");
  					is_error = true;
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "waitconnected")) {
  					Void _ = wait( makeInterruptable( cluster->onConnected() ) );
  					continue;
  				}
  
  				if( tokencmp(tokens[0], "waitopen")) {
  					Version _ = wait( getTransaction(db,tr,options,intrans)->getReadVersion() );
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "status")) {
  					// Warn at 7 seconds since status will spend as long as 5 seconds trying to read/write from the database
  					warn = timeWarning( 7.0, "\nWARNING: Long delay (Ctrl-C to interrupt)\n" );
  
  					state StatusClient::StatusLevel level;
  					if (tokens.size() == 1)
  						level = StatusClient::NORMAL;
  					else if (tokens.size() == 2 && tokencmp(tokens[1], "details"))
  						level = StatusClient::DETAILED;
  					else if (tokens.size() == 2 && tokencmp(tokens[1], "minimal"))
  						level = StatusClient::MINIMAL;
  					else if (tokens.size() == 2 && tokencmp(tokens[1], "json"))
  						level = StatusClient::JSON;
  					else {
  						printUsage(tokens[0]);
  						is_error = true;
  						continue;
  					}
  
  					StatusObject s = wait( makeInterruptable( StatusClient::statusFetcher( ccf ) ) );
  
  					if (!opt.exec.present()) printf("\n");
  					printStatus(s, level);
  					if (!opt.exec.present()) printf("\n");
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "configure")) {
  					bool err = wait( configure( db, tokens, ccf, &linenoise, warn ) );
  					if (err) is_error = true;
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "coordinators")) {
  					auto cs = ClusterConnectionFile( ccf->getFilename() ).getConnectionString();
  					if (tokens.size() < 2) {
  						printf("Cluster description: %s\n", cs.clusterKeyName().toString().c_str());
  						printf("Cluster coordinators (%zu): %s\n", cs.coordinators().size(), describe(cs.coordinators()).c_str());
  						printf("Type `help coordinators' to learn how to change this information.\n");
  					} else {
  						bool err = wait( coordinators( db, tokens, cs.coordinators()[0].isTLS() ) );
  						if (err) is_error = true;
  					}
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "exclude")) {
  					bool err = wait( exclude(db, tokens, ccf, warn ) );
  					if (err) is_error = true;
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "include")) {
  					if (tokens.size() < 2) {
  						printUsage(tokens[0]);
  						is_error = true;
  					} else {
  						bool err = wait( include(db,tokens) );
  						if (err) is_error = true;
  					}
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "setclass")) {
  					if (tokens.size() != 3 && tokens.size() != 1) {
  						printUsage(tokens[0]);
  						is_error = true;
  					} else {
  						bool err = wait( setClass(db, tokens) );
  						if (err) is_error = true;
  					}
  					continue;
  				}
  
  				if (!opened) {
  					printf("ERROR: No database open\n");
  					is_error = true;
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "begin")) {
  					if (tokens.size() != 1) {
  						printUsage(tokens[0]);
  						is_error = true;
  					} else if (intrans) {
  						printf("ERROR: Already in transaction\n");
  						is_error = true;
  					} else {
  						activeOptions = FdbOptions(globalOptions);
  						options = &activeOptions;
  						getTransaction(db, tr, options, false);
  						intrans = true;
  						printf("Transaction started\n");
  					}
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "commit")) {
  					if (tokens.size() != 1) {
  						printUsage(tokens[0]);
  						is_error = true;
  					} else if (!intrans) {
  						printf("ERROR: No active transaction\n");
  						is_error = true;
  					} else {
  						Void _ = wait( commitTransaction( tr ) );
  						intrans = false;
  						options = &globalOptions;
  					}
  
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "reset")) {
  					if (tokens.size() != 1) {
  						printUsage(tokens[0]);
  						is_error = true;
  					} else if (!intrans) {
  						printf("ERROR: No active transaction\n");
  						is_error = true;
  					} else {
  						tr->reset();
  						activeOptions = FdbOptions(globalOptions);
  						options = &activeOptions;
  						options->apply(tr);
  						printf("Transaction reset\n");
  					}
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "rollback")) {
  					if(tokens.size() != 1) {
  						printUsage(tokens[0]);
  						is_error = true;
  					} else if (!intrans) {
  						printf("ERROR: No active transaction\n");
  						is_error = true;
  					} else {
  						intrans = false;
  						options = &globalOptions;
  						printf("Transaction rolled back\n");
  					}
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "get")) {
  					if (tokens.size() != 2) {
  						printUsage(tokens[0]);
  						is_error = true;
  					} else {
  						Optional<Standalone<StringRef>> v = wait( makeInterruptable( getTransaction(db,tr,options,intrans)->get(tokens[1]) ) );
  
  						if (v.present())
  							printf("`%s' is `%s'\n", printable(tokens[1]).c_str(),
  								   printable(v.get()).c_str());
  						else
  							printf("`%s': not found\n", printable(tokens[1]).c_str());
  					}
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "kill")) {
  					getTransaction(db, tr, options, intrans);
  					if (tokens.size() == 1) {
  						Standalone<RangeResultRef> kvs = wait( makeInterruptable( tr->getRange(KeyRangeRef(LiteralStringRef("\xff\xff/worker_interfaces"), LiteralStringRef("\xff\xff\xff")), 1) ) );
  						for( auto it : kvs ) {
  							address_interface[it.key] = it.value;
  						}
  					}
  					if (tokens.size() == 1 || tokencmp(tokens[1], "list")) {
  						if(address_interface.size() == 0) {
  							printf("\nNo addresses can be killed.\n");
  						} else if(address_interface.size() == 1) {
  							printf("\nThe following address can be killed:\n");
  						} else {
  							printf("\nThe following %zu addresses can be killed:\n", address_interface.size());
  						}
  						for( auto it : address_interface ) {
  							printf("%s\n", printable(it.first).c_str());
  						}
  						printf("\n");
  					} else if (tokencmp(tokens[1], "all")) {
  						for( auto it : address_interface ) {
  							tr->set(LiteralStringRef("\xff\xff/reboot_worker"), it.second);
  						}
  						if (address_interface.size() == 0) {
  							printf("ERROR: no processes to kill. You must run the `kill’ command before running `kill all’.\n");
  						} else {
  							printf("Attempted to kill %zu processes\n", address_interface.size());
  						}
  					} else {
  						for(int i = 1; i < tokens.size(); i++) {
  							if(!address_interface.count(tokens[i])) {
  								printf("ERROR: process `%s' not recognized.\n", printable(tokens[i]).c_str());
  								is_error = true;
  								break;
  							}
  						}
  
  						if(!is_error) {
  							for(int i = 1; i < tokens.size(); i++) {
  								tr->set(LiteralStringRef("\xff\xff/reboot_worker"), address_interface[tokens[i]]);
  							}
  							printf("Attempted to kill %zu processes\n", tokens.size() - 1);
  						}
  					}
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "profile")) {
  					if (tokens.size() == 1) {
  						printf("ERROR: Usage: profile <client|list|flow>\n");
  						is_error = true;
  						continue;
  					}
  					if (tokencmp(tokens[1], "client")) {
  						getTransaction(db, tr, options, intrans);
  						tr->setOption(FDBTransactionOptions::ACCESS_SYSTEM_KEYS);
  						if (tokens.size() == 2) {
  							printf("ERROR: Usage: profile client <get|set>\n");
  							is_error = true;
  							continue;
  						}
  						if (tokencmp(tokens[2], "get")) {
  							if (tokens.size() != 3) {
  								printf("ERROR: Addtional arguments to `get` are not supported.\n");
  								is_error = true;
  								continue;
  							}
  							state Future<Optional<Standalone<StringRef>>> sampleRateFuture = tr->get(fdbClientInfoTxnSampleRate);
  							state Future<Optional<Standalone<StringRef>>> sizeLimitFuture = tr->get(fdbClientInfoTxnSizeLimit);
  							Void _ = wait(makeInterruptable(success(sampleRateFuture) && success(sizeLimitFuture)));
  							std::string sampleRateStr = "default", sizeLimitStr = "default";
  							if (sampleRateFuture.get().present()) {
  								const double sampleRateDbl = BinaryReader::fromStringRef<double>(sampleRateFuture.get().get(), Unversioned());
  								if (!std::isinf(sampleRateDbl)) {
  									sampleRateStr = boost::lexical_cast<std::string>(sampleRateDbl);
  								}
  							}
  							if (sizeLimitFuture.get().present()) {
  								const int64_t sizeLimit = BinaryReader::fromStringRef<int64_t>(sizeLimitFuture.get().get(), Unversioned());
  								if (sizeLimit != -1) {
  									sizeLimitStr = boost::lexical_cast<std::string>(sizeLimit);
  								}
  							}
  							printf("Client profiling rate is set to %s and size limit is set to %s.\n", sampleRateStr.c_str(), sizeLimitStr.c_str());
  							continue;
  						}
  						if (tokencmp(tokens[2], "set")) {
  							if (tokens.size() != 5) {
  								printf("ERROR: Usage: profile client set <RATE|default> <SIZE|default>\n");
  								is_error = true;
  								continue;
  							}
  							double sampleRate;
  							if (tokencmp(tokens[3], "default")) {
  								sampleRate = std::numeric_limits<double>::infinity();
  							} else {
  								char* end;
  								sampleRate = std::strtod((const char*)tokens[3].begin(), &end);
  								if (!std::isspace(*end)) {
  									printf("ERROR: %s failed to parse.\n", printable(tokens[3]).c_str());
  									is_error = true;
  									continue;
  								}
  							}
  							int64_t sizeLimit;
  							if (tokencmp(tokens[4], "default")) {
  								sizeLimit = -1;
  							} else {
  								Optional<uint64_t> parsed = parse_with_suffix(tokens[4].toString());
  								if (parsed.present()) {
  									sizeLimit = parsed.get();
  								} else {
  									printf("ERROR: `%s` failed to parse.\n", printable(tokens[4]).c_str());
  									is_error = true;
  									continue;
  								}
  							}
  							tr->set(fdbClientInfoTxnSampleRate, BinaryWriter::toValue(sampleRate, Unversioned()));
  							tr->set(fdbClientInfoTxnSizeLimit, BinaryWriter::toValue(sizeLimit, Unversioned()));
  							if (!intrans) {
  								Void _ = wait( commitTransaction( tr ) );
  							}
  							continue;
  						}
  						printf("ERROR: Unknown action: %s\n", printable(tokens[2]).c_str());
  						is_error = true;
  						continue;
  					}
  					if (tokencmp(tokens[1], "list")) {
  						if (tokens.size() != 2) {
  							printf("ERROR: Usage: profile list\n");
  							is_error = true;
  							continue;
  						}
  						getTransaction(db, tr, options, intrans);
  						Standalone<RangeResultRef> kvs = wait(makeInterruptable(
  						    tr->getRange(KeyRangeRef(LiteralStringRef("\xff\xff/worker_interfaces"),
  						                             LiteralStringRef("\xff\xff\xff")),
  						                 1)));
  						for (const auto& pair : kvs) {
  							printf("%s\n", printable(pair.key).c_str());
  						}
  						continue;
  					}
  					if (tokencmp(tokens[1], "flow")) {
  						if (tokens.size() == 2) {
  							printf("ERROR: Usage: profile flow <run>\n");
  							is_error = true;
  							continue;
  						}
  						if (tokencmp(tokens[2], "run")) {
  							if (tokens.size() < 6) {
  								printf("ERROR: Usage: profile flow run <duration in seconds> <filename> <hosts>\n");
  								is_error = true;
  								continue;
  							}
  							getTransaction(db, tr, options, intrans);
  							Standalone<RangeResultRef> kvs = wait(makeInterruptable(
  							    tr->getRange(KeyRangeRef(LiteralStringRef("\xff\xff/worker_interfaces"),
  							                             LiteralStringRef("\xff\xff\xff")),
  							                 1)));
  							char *duration_end;
  							int duration = std::strtol((const char*)tokens[3].begin(), &duration_end, 10);
  							if (!std::isspace(*duration_end)) {
  								printf("ERROR: Failed to parse %s as an integer.", printable(tokens[3]).c_str());
  								is_error = true;
  								continue;
  							}
  							std::map<Key, ClientWorkerInterface> interfaces;
  							state std::vector<Key> all_profiler_addresses;
  							state std::vector<Future<ErrorOr<Void>>> all_profiler_responses;
  							for (const auto& pair : kvs) {
  								interfaces.emplace(pair.key, BinaryReader::fromStringRef<ClientWorkerInterface>(pair.value, IncludeVersion()));
  							}
  							if (tokens.size() == 6 && tokencmp(tokens[5], "all")) {
  								for (const auto& pair : interfaces) {
  									ProfilerRequest profileRequest;
  									profileRequest.type = ProfilerRequest::Type::FLOW;
  									profileRequest.action = ProfilerRequest::Action::RUN;
  									profileRequest.duration = duration;
  									profileRequest.outputFile = tokens[4];
  									all_profiler_addresses.push_back(pair.first);
  									all_profiler_responses.push_back(pair.second.profiler.tryGetReply(profileRequest));
  								}
  							} else {
  								for (int tokenidx = 5; tokenidx < tokens.size(); tokenidx++) {
  									auto element = interfaces.find(tokens[tokenidx]);
  									if (element == interfaces.end()) {
  										printf("ERROR: process '%s' not recognized.\n", printable(tokens[tokenidx]).c_str());
  										is_error = true;
  									}
  								}
  								if (!is_error) {
  									for (int tokenidx = 5; tokenidx < tokens.size(); tokenidx++) {
  										ProfilerRequest profileRequest;
  										profileRequest.type = ProfilerRequest::Type::FLOW;
  										profileRequest.action = ProfilerRequest::Action::RUN;
  										profileRequest.duration = duration;
  										profileRequest.outputFile = tokens[4];
  										all_profiler_addresses.push_back(tokens[tokenidx]);
  										all_profiler_responses.push_back(interfaces[tokens[tokenidx]].profiler.tryGetReply(profileRequest));
  									}
  								}
  							}
  							if (!is_error) {
  								Void _ = wait(waitForAll(all_profiler_responses));
  								for (int i = 0; i < all_profiler_responses.size(); i++) {
  									const ErrorOr<Void>& err = all_profiler_responses[i].get();
  									if (err.isError()) {
  										printf("ERROR: %s: %s: %s\n", printable(all_profiler_addresses[i]).c_str(), err.getError().name(), err.getError().what());
  									}
  								}
  							}
  							all_profiler_addresses.clear();
  							all_profiler_responses.clear();
  							continue;
  						}
  					}
  					printf("ERROR: Unknown type: %s\n", printable(tokens[1]).c_str());
  					is_error = true;
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "expensive_data_check")) {
  					getTransaction(db, tr, options, intrans);
  					if (tokens.size() == 1) {
  						Standalone<RangeResultRef> kvs = wait( makeInterruptable( tr->getRange(KeyRangeRef(LiteralStringRef("\xff\xff/worker_interfaces"), LiteralStringRef("\xff\xff\xff")), 1) ) );
  						for( auto it : kvs ) {
  							address_interface[it.key] = it.value;
  						}
  					}
  					if (tokens.size() == 1 || tokencmp(tokens[1], "list")) {
  						if(address_interface.size() == 0) {
  							printf("\nNo addresses can be checked.\n");
  						} else if(address_interface.size() == 1) {
  							printf("\nThe following address can be checked:\n");
  						} else {
  							printf("\nThe following %zu addresses can be checked:\n", address_interface.size());
  						}
  						for( auto it : address_interface ) {
  							printf("%s\n", printable(it.first).c_str());
  						}
  						printf("\n");
  					} else if (tokencmp(tokens[1], "all")) {
  						for( auto it : address_interface ) {
  							tr->set(LiteralStringRef("\xff\xff/reboot_and_check_worker"), it.second);
  						}
  						if (address_interface.size() == 0) {
  							printf("ERROR: no processes to check. You must run the `expensive_data_check’ command before running `expensive_data_check all’.\n");
  						} else {
  							printf("Attempted to kill and check %zu processes\n", address_interface.size());
  						}
  					} else {
  						for(int i = 1; i < tokens.size(); i++) {
  							if(!address_interface.count(tokens[i])) {
  								printf("ERROR: process `%s' not recognized.\n", printable(tokens[i]).c_str());
  								is_error = true;
  								break;
  							}
  						}
  
  						if(!is_error) {
  							for(int i = 1; i < tokens.size(); i++) {
  								tr->set(LiteralStringRef("\xff\xff/reboot_and_check_worker"), address_interface[tokens[i]]);
  							}
  							printf("Attempted to kill and check %zu processes\n", tokens.size() - 1);
  						}
  					}
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "getrange") || tokencmp(tokens[0], "getrangekeys")) { //FIXME: support byte limits, and reverse range reads
  					if (tokens.size() < 2 || tokens.size() > 4) {
  						printUsage(tokens[0]);
  						is_error = true;
  					} else {
  						state int limit;
  						bool valid = true;
  
  						if (tokens.size() == 4) {
  							// INT_MAX is 10 digits; rather than
  							// worrying about overflow we'll just cap
  							// limit at the (already absurd)
  							// nearly-a-billion
  							if (tokens[3].size() > 9) {
  								printf("ERROR: bad limit\n");
  								is_error = true;
  								continue;
  							}
  							limit = 0;
  							int place = 1;
  							for (int i = tokens[3].size(); i > 0; i--) {
  								int val = int(tokens[3][i-1]) - int('0');
  								if (val < 0 || val > 9) {
  									valid = false;
  									break;
  								}
  								limit += val * place;
  								place *= 10;
  							}
  							if (!valid) {
  								printf("ERROR: bad limit\n");
  								is_error = true;
  								continue;
  							}
  						} else {
  							limit = 25;
  						}
  
  						Standalone<StringRef> endKey;
  						if (tokens.size() >= 3) {
  							endKey = tokens[2];
  						}
  						else if(tokens[1].size() == 0) {
  							endKey = normalKeys.end;
  						}
  						else if(tokens[1] == systemKeys.begin) {
  							endKey = systemKeys.end;
  						}
  						else if(tokens[1] >= allKeys.end) {
  							throw key_outside_legal_range();
  						}
  						else {
  							endKey = strinc(tokens[1]);
  						}
  
  						Standalone<RangeResultRef> kvs = wait( makeInterruptable( getTransaction(db, tr, options, intrans)->getRange(KeyRangeRef(tokens[1], endKey), limit) ) );
  
  						printf("\nRange limited to %d keys\n", limit);
  						for (auto iter = kvs.begin(); iter < kvs.end(); iter++) {
  							if (tokencmp(tokens[0], "getrangekeys"))
  								printf("`%s'\n", printable((*iter).key).c_str());
  							else
  								printf("`%s' is `%s'\n",
  									printable((*iter).key).c_str(),
  									printable((*iter).value).c_str());
  						}
  						printf("\n");
  					}
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "writemode")) {
  					if (tokens.size() != 2) {
  						printUsage(tokens[0]);
  						is_error = true;
  					} else {
  						if(tokencmp(tokens[1], "on")) {
  							writeMode = true;
  						} else if(tokencmp(tokens[1], "off")) {
  							writeMode = false;
  						} else {
  							printUsage(tokens[0]);
  							is_error = true;
  						}
  					}
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "set")) {
  					if(!writeMode) {
  						printf("ERROR: writemode must be enabled to set or clear keys in the database.\n");
  						is_error = true;
  						continue;
  					}
  
  					if (tokens.size() != 3) {
  						printUsage(tokens[0]);
  						is_error = true;
  					} else {
  						getTransaction(db, tr, options, intrans);
  						tr->set(tokens[1], tokens[2]);
  
  						if (!intrans) {
  							Void _ = wait( commitTransaction( tr ) );
  						}
  					}
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "clear")) {
  					if(!writeMode) {
  						printf("ERROR: writemode must be enabled to set or clear keys in the database.\n");
  						is_error = true;
  						continue;
  					}
  
  					if (tokens.size() != 2) {
  						printUsage(tokens[0]);
  						is_error = true;
  					} else {
  						getTransaction(db, tr, options, intrans);
  						tr->clear(tokens[1]);
  
  						if (!intrans) {
  							Void _ = wait( commitTransaction( tr ) );
  						}
  					}
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "clearrange")) {
  					if(!writeMode) {
  						printf("ERROR: writemode must be enabled to set or clear keys in the database.\n");
  						is_error = true;
  						continue;
  					}
  
  					if (tokens.size() != 3) {
  						printUsage(tokens[0]);
  						is_error = true;
  					} else {
  						getTransaction(db, tr, options, intrans);
  						tr->clear(KeyRangeRef(tokens[1], tokens[2]));
  
  						if (!intrans) {
  							Void _ = wait( commitTransaction( tr ) );
  						}
  					}
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "datadistribution")) {
  					if (tokens.size() != 2) {
  						printf("Usage: datadistribution <on|off>\n");
  						is_error = true;
  					} else {
  						if(tokencmp(tokens[1], "on")) {
  							int _ = wait(setDDMode(db, 1));
  							printf("Data distribution is enabled\n");
  						} else if(tokencmp(tokens[1], "off")) {
  							int _ = wait(setDDMode(db, 0));
  							printf("Data distribution is disabled\n");
  						} else {
  							printf("Usage: datadistribution <on|off>\n");
  							is_error = true;
  						}
  					}
  					continue;
  				}
  
  				if (tokencmp(tokens[0], "option")) {
  					if (tokens.size() == 2 || tokens.size() > 4) {
  						printUsage(tokens[0]);
  						is_error = true;
  					} else {
  						if(tokens.size() == 1) {
  							if(options->hasAnyOptionsEnabled()) {
  								printf("\nCurrently enabled options:\n\n");
  								options->print();
  								printf("\n");
  							}
  							else
  								printf("There are no options enabled\n");
  
  							continue;
  						}
  						bool isOn;
  						if(tokencmp(tokens[1], "on")) {
  							isOn = true;
  						}
  						else if(tokencmp(tokens[1], "off")) {
  							if(intrans) {
  								printf("ERROR: Cannot turn option off when using a transaction created with `begin'\n");
  								is_error = true;
  								continue;
  							}
  							if(tokens.size() > 3) {
  								printf("ERROR: Cannot specify option argument when turning option off\n");
  								is_error = true;
  								continue;
  							}
  
  							isOn = false;
  						}
  						else {
  							printf("ERROR: Invalid option state `%s': option must be turned `on' or `off'\n", formatStringRef(tokens[1]).c_str());
  							is_error = true;
  							continue;
  						}
  
  						Optional<StringRef> arg = (tokens.size() > 3) ? tokens[3] : Optional<StringRef>();
  
  						try {
  							options->setOption(tr, tokens[2], isOn, arg, intrans);
  							printf("Option %s for %s\n", isOn ? "enabled" : "disabled", intrans ? "current transaction" : "all transactions");
  						}
  						catch(Error &e) {
  							//options->setOption() prints error message
  							TraceEvent(SevWarn, "CLISetOptionError").detail("Option", printable(tokens[2])).error(e);
  							is_error = true;
  						}
  					}
  
  					continue;
  				}
  
  				printf("ERROR: Unknown command `%s'. Try `help'?\n", formatStringRef(tokens[0]).c_str());
  				is_error = true;
  			}
  
  			TraceEvent(SevInfo, "CLICommandLog", randomID).detail("command", printable(StringRef(line))).detail("is_error", is_error);
  
  		} catch (Error& e) {
  			if(e.code() != error_code_actor_cancelled)
  				printf("ERROR: %s (%d)\n", e.what(), e.code());
  			is_error = true;
  			if (connected && opened) {
  				if (intrans) {
  					printf("Rolling back current transaction\n");
  					intrans = false;
  					options = &globalOptions;
  					options->apply(tr);
  				}
  			}
  		}
  
  		if (opt.exec.present()) {
  			return is_error ? 1 : 0;
  		}
  	}
  }
  
  ACTOR Future<int> runCli(CLIOptions opt) {
  	state LineNoise linenoise(
  		[](std::string const& line, std::vector<std::string>& completions) {
  			fdbcli_comp_cmd(line, completions);
  		},
  		[](std::string const& line)->LineNoise::Hint {
  			return LineNoise::Hint();
  		},
  		1000,
  		false);
  
  	state std::string historyFilename;
  	try {
  		historyFilename = joinPath(getUserHomeDirectory(), ".fdbcli_history");
  		linenoise.historyLoad(historyFilename);
  	}
  	catch(Error &e) {
  		TraceEvent(SevWarnAlways, "ErrorLoadingCliHistory").detail("Filename", historyFilename.empty() ? "<unknown>" : historyFilename).error(e).GetLastError();
  	}
  
  	state int result = wait(cli(opt, &linenoise));
  
  	if(!historyFilename.empty()) {
  		try {
  			linenoise.historySave(historyFilename);
  		}
  		catch(Error &e) {
  			TraceEvent(SevWarnAlways, "ErrorSavingCliHistory").detail("Filename", historyFilename).error(e).GetLastError();
  		}
  	}
  
  	return result;
  }
  
  ACTOR Future<Void> timeExit(double duration) {
  	Void _ = wait(delay(duration));
  	fprintf(stderr, "Specified timeout reached -- exiting...\n");
  	return Void();
  }
  
  int main(int argc, char **argv) {
  	platformInit();
  	initSignalSafeUnwind();
  	Error::init();
  	std::set_new_handler( &platform::outOfMemory );
  	uint64_t memLimit = 8LL << 30;
  	setMemoryQuota( memLimit );
  
  	registerCrashHandler();
  
  #ifdef __unixish__
  	struct sigaction act;
  
  	// We don't want ctrl-c to quit
  	sigemptyset( &act.sa_mask );
  	act.sa_flags = 0;
  	act.sa_handler = SIG_IGN;
  	sigaction(SIGINT, &act, NULL);
  #endif
  
  	CLIOptions opt(argc, argv);
  	if (opt.exit_code != -1)
  		return opt.exit_code;
  
  	if(opt.trace) {
  		if(opt.traceDir.empty())
  			setNetworkOption(FDBNetworkOptions::TRACE_ENABLE);
  		else
  			setNetworkOption(FDBNetworkOptions::TRACE_ENABLE, StringRef(opt.traceDir));
  
  		setNetworkOption(FDBNetworkOptions::ENABLE_SLOW_TASK_PROFILING);
  	}
  
  	initHelp();
  
  	// deferred TLS options
  	if ( opt.tlsCertPath.size() ) {
  		try {
  			setNetworkOption(FDBNetworkOptions::TLS_CERT_PATH, opt.tlsCertPath);
  		} catch( Error& e ) {
  			fprintf(stderr, "ERROR: cannot set TLS certificate path to `%s' (%s)\n", opt.tlsCertPath.c_str(), e.what());
  			return 1;
  		}
  	}
  	if (opt.tlsCAPath.size()) {
  		try {
  			setNetworkOption(FDBNetworkOptions::TLS_CA_PATH, opt.tlsCAPath);
  		}
  		catch (Error& e) {
  			fprintf(stderr, "ERROR: cannot set TLS CA path to `%s' (%s)\n", opt.tlsCAPath.c_str(), e.what());
  			return 1;
  		}
  	}
  	if ( opt.tlsKeyPath.size() ) {
  		try {
  			if (opt.tlsPassword.size())
  				setNetworkOption(FDBNetworkOptions::TLS_PASSWORD);
  
  			setNetworkOption(FDBNetworkOptions::TLS_KEY_PATH, opt.tlsKeyPath);
  		} catch( Error& e ) {
  			fprintf(stderr, "ERROR: cannot set TLS key path to `%s' (%s)\n", opt.tlsKeyPath.c_str(), e.what());
  			return 1;
  		}
  	}
  	if ( opt.tlsVerifyPeers.size() ) {
  		try {
  			setNetworkOption(FDBNetworkOptions::TLS_VERIFY_PEERS, opt.tlsVerifyPeers);
  		} catch( Error& e ) {
  			fprintf(stderr, "ERROR: cannot set TLS peer verification to `%s' (%s)\n", opt.tlsVerifyPeers.c_str(), e.what());
  			return 1;
  		}
  	}
  
  	try {
  		setNetworkOption(FDBNetworkOptions::DISABLE_CLIENT_STATISTICS_LOGGING);
  	}
  	catch (Error& e) {
  		fprintf(stderr, "ERROR: cannot disable logging client related information (%s)\n", e.what());
  		return 1;
  	}
  
  	try {
  		setupNetwork();
  		Future<int> cliFuture = runCli(opt);
  		Future<Void> timeoutFuture = opt.exit_timeout ? timeExit(opt.exit_timeout) : Never();
  		auto f = stopNetworkAfter( success(cliFuture) || timeoutFuture );
  		runNetwork();
  
  		if(cliFuture.isReady()) {
  			return cliFuture.get();
  		}
  		else {
  			return 1;
  		}
  	} catch (Error& e) {
  		printf("ERROR: %s (%d)\n", e.what(), e.code());
  		return 1;
  	}
  }
  