text: #include <boost/algorithm/string/predicate.hpp>
  
  #include "fdbserver/workloads/workloads.actor.h"
  #include "fdbserver/ServerDBInfo.h"
  #include "fdbclient/Status.h"
  #include "fdbclient/StatusClient.h"
  #include "fdbclient/ManagementAPI.actor.h"
  #include "fdbclient/RunTransaction.actor.h"
  #include "flow/actorcompiler.h" // has to be last include
  
  struct SuspendProcessesWorkload : TestWorkload {
  	std::vector<std::string> prefixSuspendProcesses;
  	double suspendTimeDuration;
  	double waitTimeDuration;
  
  	SuspendProcessesWorkload(WorkloadContext const& wcx) : TestWorkload(wcx) {
  		prefixSuspendProcesses = getOption(options, LiteralStringRef("prefixesSuspendProcesses"), std::vector<std::string>());
  		waitTimeDuration = getOption(options, LiteralStringRef("waitTimeDuration"), 0);
  		suspendTimeDuration = getOption(options, LiteralStringRef("suspendTimeDuration"), 0);
  	}
  
  	std::string description() const override { return "SuspendProcesses"; }
  
  	Future<Void> setup(Database const& cx) override { return Void(); }
  
  	ACTOR Future<Void> _start(Database cx, SuspendProcessesWorkload* self) {
  		wait(delay(self->waitTimeDuration));
  		state ReadYourWritesTransaction tr(cx);
  		loop {
  			try {
  				tr.setOption(FDBTransactionOptions::ACCESS_SYSTEM_KEYS);
  				tr.setOption(FDBTransactionOptions::LOCK_AWARE);
  				Standalone<RangeResultRef> kvs =
  				    wait(tr.getRange(KeyRangeRef(LiteralStringRef("\xff\xff/worker_interfaces/"),
  				                                 LiteralStringRef("\xff\xff/worker_interfaces0")),
  				                     CLIENT_KNOBS->TOO_MANY));
  				ASSERT(!kvs.more);
  				std::vector<Standalone<StringRef>> suspendProcessInterfaces;
  				for (auto it : kvs) {
  					auto ip_port =
  					    (it.key.endsWith(LiteralStringRef(":tls")) ? it.key.removeSuffix(LiteralStringRef(":tls"))
  					                                               : it.key)
  					        .removePrefix(LiteralStringRef("\xff\xff/worker_interfaces/"));
  					for (auto& killProcess : self->prefixSuspendProcesses) {
  						if (boost::starts_with(ip_port.toString().c_str(), killProcess.c_str())) {
  							suspendProcessInterfaces.push_back(it.value);
  							TraceEvent("SuspendProcessSelectedProcess").detail("IpPort", printable(ip_port));
  						}
  					}
  				}
  				for (auto& interf : suspendProcessInterfaces) {
  					BinaryReader::fromStringRef<ClientWorkerInterface>(interf, IncludeVersion())
  					    .reboot.send(RebootRequest(false, false, self->suspendTimeDuration));
  				}
  				return Void();
  			} catch (Error& e) {
  				wait(tr.onError(e));
  			}
  		}
  	}
  
  	Future<Void> start(Database const& cx) override {
  		if (clientId != 0) return Void();
  		return _start(cx, this);
  	}
  
  	Future<bool> check(Database const& cx) override { return true; }
  
  	void getMetrics(vector<PerfMetric>& m) override {}
  };
  
  WorkloadFactory<SuspendProcessesWorkload> SuspendProcessesWorkloadFactory("SuspendProcesses");
  