Revision 741a55d1 include/ReplicaManager.h
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#ifndef REPLICA_MANAGER_H_ |
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#define REPLICA_MANAGER_H_ |
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#include <xmlrpc-c/client.hpp> |
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#include <string> |
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#include <map> |
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#include <vector> |
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class LogDBRecord;
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class ReplicaThread;
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extern "C" void * replication_thread(void *arg); |
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// ----------------------------------------------------------------------------- |
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// ----------------------------------------------------------------------------- |
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// Replication thread class |
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// ----------------------------------------------------------------------------- |
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// ----------------------------------------------------------------------------- |
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class ReplicaThread |
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{
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public: |
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ReplicaThread(int follower_id); |
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virtual ~ReplicaThread(){};
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/** |
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* Main replication logic for the thread, it sends log records to followers |
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* and handle errors |
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*/ |
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void do_replication(); |
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/** |
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* Notify this replica thread that are new records in the log to replicate |
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*/ |
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void add_request(); |
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/** |
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* Exists the replication thread |
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*/ |
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void finalize(); |
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pthread_t thread_id() const |
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{
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return _thread_id; |
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} |
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private: |
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/** |
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* C linkage function to start the thread |
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* @param arg pointer to "this" |
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*/ |
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friend void * replication_thread(void *arg); |
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// ------------------------------------------------------------------------- |
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// pthread synchronization variables |
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// ------------------------------------------------------------------------- |
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pthread_t _thread_id; |
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pthread_mutex_t mutex; |
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pthread_cond_t cond; |
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bool _finalize; |
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bool _pending_requests; |
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time_t retry_timeout; |
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static const time_t max_retry_timeout; |
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// ------------------------------------------------------------------------- |
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// Information of the replication target server and leader |
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// ------------------------------------------------------------------------- |
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int follower_id; |
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}; |
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// ----------------------------------------------------------------------------- |
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// ----------------------------------------------------------------------------- |
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// Replication Manager |
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// Replication Manager. This is a generic replication manager it starts, stops |
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// and send control events to replica threads. |
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// ----------------------------------------------------------------------------- |
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// ----------------------------------------------------------------------------- |
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class ReplicaManager |
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{
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public: |
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ReplicaManager(){};
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virtual ~ReplicaManager() |
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{
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stop_replica_threads(); |
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}; |
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/** |
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* Start the replication threads, one for each server in the zone |
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*/ |
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*/ |
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void add_replica_thread(int follower_id); |
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protected: |
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ReplicaManager(){};
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virtual ~ReplicaManager() |
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{
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stop_replica_threads(); |
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}; |
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virtual ReplicaThread * thread_factory(int follower_id) = 0; |
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private: |
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/** |
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* The replication thread pool |
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ReplicaThread * get_thread(int server_id); |
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}; |
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// ----------------------------------------------------------------------------- |
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// ----------------------------------------------------------------------------- |
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// RaftReplicaManager to manage the raft replication thread pool |
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// ----------------------------------------------------------------------------- |
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// ----------------------------------------------------------------------------- |
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class RaftReplicaManager : public ReplicaManager |
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{
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public: |
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RaftReplicaManager():ReplicaManager(){};
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virtual ~RaftReplicaManager(){};
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private: |
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ReplicaThread * thread_factory(int follower_id); |
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}; |
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#endif /*REPLICA_MANAGER_H_*/ |
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