text: /*
   * ChangeConfig.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 "fdbclient/NativeAPI.actor.h"
  #include "fdbclient/ClusterInterface.h"
  #include "fdbserver/TesterInterface.actor.h"
  #include "fdbclient/ManagementAPI.actor.h"
  #include "fdbserver/workloads/workloads.actor.h"
  #include "fdbrpc/simulator.h"
  #include "flow/actorcompiler.h"  // This must be the last #include.
  
  struct ChangeConfigWorkload : TestWorkload {
  	double minDelayBeforeChange, maxDelayBeforeChange;
  	std::string configMode; //<\"single\"|\"double\"|\"triple\">
  	std::string networkAddresses; //comma separated list e.g. "127.0.0.1:4000,127.0.0.1:4001"
  
  	ChangeConfigWorkload(WorkloadContext const& wcx)
  		: TestWorkload(wcx)
  	{
  		minDelayBeforeChange = getOption( options, LiteralStringRef("minDelayBeforeChange"), 0 );
  		maxDelayBeforeChange = getOption( options, LiteralStringRef("maxDelayBeforeChange"), 0 );
  		ASSERT( maxDelayBeforeChange >= minDelayBeforeChange );
  		configMode = getOption( options, LiteralStringRef("configMode"), StringRef() ).toString();
  		networkAddresses = getOption( options, LiteralStringRef("coordinators"), StringRef() ).toString();
  	}
  
  	virtual std::string description() { return "ChangeConfig"; }
  
  	virtual Future<Void> start( Database const& cx ) {
  		if( this->clientId != 0 ) return Void();
  		return ChangeConfigClient( cx->clone(), this );
  	}
  
  	virtual Future<bool> check( Database const& cx ) {
  		return true;
  	}
  
  	virtual void getMetrics( vector<PerfMetric>& m ) {}
  
  	ACTOR Future<Void> extraDatabaseConfigure(ChangeConfigWorkload *self) {
  		if (g_network->isSimulated() && g_simulator.extraDB) {
  			Reference<ClusterConnectionFile> extraFile(new ClusterConnectionFile(*g_simulator.extraDB));
  			state Database extraDB = Database::createDatabase(extraFile, -1);
  
  			wait(delay(5*g_random->random01()));
  			if (self->configMode.size()) {
  				wait(success(changeConfig(extraDB, self->configMode, true)));
  				TraceEvent("WaitForReplicasExtra");
  				wait( waitForFullReplication( extraDB ) );
  				TraceEvent("WaitForReplicasExtraEnd");
  			} if (self->networkAddresses.size()) {
  				if (self->networkAddresses == "auto")
  					wait(success(changeQuorum(extraDB, autoQuorumChange())));
  				else
  					wait(success(changeQuorum(extraDB, specifiedQuorumChange(NetworkAddress::parseList(self->networkAddresses)))));
  			}
  			wait(delay(5*g_random->random01()));
  		}
  		return Void();
  	}
  
  	ACTOR Future<Void> ChangeConfigClient( Database cx, ChangeConfigWorkload *self) {
  		wait( delay( self->minDelayBeforeChange + g_random->random01() * ( self->maxDelayBeforeChange - self->minDelayBeforeChange ) ) );
  
  		state bool extraConfigureBefore = g_random->random01() < 0.5;
  
  		if(extraConfigureBefore) {
  			wait( self->extraDatabaseConfigure(self) );
  		}
  
  		if( self->configMode.size() ) {
  			wait(success( changeConfig( cx, self->configMode, true ) ));
  			TraceEvent("WaitForReplicas");
  			wait( waitForFullReplication( cx ) );
  			TraceEvent("WaitForReplicasEnd");
  		}
  		if( self->networkAddresses.size() ) {
  			if (self->networkAddresses == "auto")
  				wait(success( changeQuorum( cx, autoQuorumChange() ) ));
  			else
  				wait(success( changeQuorum( cx, specifiedQuorumChange(NetworkAddress::parseList( self->networkAddresses )) ) ));
  		}
  
  		if(!extraConfigureBefore) {
  			wait( self->extraDatabaseConfigure(self) );
  		}
  
  		return Void();
  	}
  };
  
  WorkloadFactory<ChangeConfigWorkload> ChangeConfigWorkloadFactory("ChangeConfig");
  