question: public void handleKeepAliveSignal ( long platformIdent ) { AgentStatusData agentStatusData = agentStatusDataMap . get ( platformIdent ) ; if ( null != agentStatusData ) { agentStatusData . setLastKeepAliveTimestamp ( System . currentTimeMillis ( ) ) ; if ( agentStatusData . getAgentConnection ( ) == AgentConnection . NO_KEEP_ALIVE ) { agentStatusData . setAgentConnection ( AgentConnection . CONNECTED ) ; if ( log . isInfoEnabled ( ) ) { log . info ( "Platform " + platformIdent + " sending keep-alive signals again." ) ; } } } }
target:  Registers the time when the last keep-alive was received for a given platform ident.