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DDS plugin: Wait for IDLE->EXITING state-change to be acknowledged

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Sometimes devices shut down too fast when entering the EXITING state so
that the publication of that state-change will never be sent. The plugin
now waits for an acknowledgement by the external controller with a
configurable timeout.
This commit is contained in:
Dennis Klein
2019-09-04 12:49:38 +02:00
committed by Dennis Klein
parent c1a17c97b8
commit 8a2c7fb601
7 changed files with 47 additions and 5 deletions
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8
fairmq/plugins/DDS/DDS.h
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@@ -129,6 +129,7 @@ class DDS : public Plugin
private:
auto StaticControl() -> void;
auto WaitForExitingAck() -> void;
auto FillChannelContainers() -> void;
auto SubscribeForConnectingChannels() -> void;
@@ -158,7 +159,11 @@ class DDS : public Plugin
std::set<uint64_t> fHeartbeatSubscribers;
std::mutex fHeartbeatSubscriberMutex;
std::set<uint64_t> fStateChangeSubscribers;
uint64_t fLastExternalController;
bool fExitingAckedByLastExternalController;
std::condition_variable fExitingAcked;
std::mutex fStateChangeSubscriberMutex;
std::thread fHeartbeatThread;
@@ -174,7 +179,8 @@ Plugin::ProgOptions DDSProgramOptions()
boost::program_options::options_description options{"DDS Plugin"};
options.add_options()
("dds-i", boost::program_options::value<std::vector<std::string>>()->multitoken()->composing(), "Task index for chosing connection target (single channel n to m). When all values come via same update.")
("dds-i-n", boost::program_options::value<std::vector<std::string>>()->multitoken()->composing(), "Task index for chosing connection target (one out of n values to take). When values come as independent updates.");
("dds-i-n", boost::program_options::value<std::vector<std::string>>()->multitoken()->composing(), "Task index for chosing connection target (one out of n values to take). When values come as independent updates.")
("wait-for-exiting-ack-timeout", boost::program_options::value<unsigned int>()->default_value(1000), "Wait timeout for EXITING state-change acknowledgement by external controller in milliseconds.");
return options;
}