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Counts raft replication events. More precisely counts:
new replication, nbr of attempts, successful and failed. Also logs number of attempts if more than 1
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75 changes: 75 additions & 0 deletions
75
...ava/org/neo4j/causalclustering/core/replication/monitoring/LoggingReplicationMonitor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| /* | ||
| * Copyright (c) 2002-2018 "Neo4j," | ||
| * Neo4j Sweden AB [http://neo4j.com] | ||
| * | ||
| * This file is part of Neo4j Enterprise Edition. The included source | ||
| * code can be redistributed and/or modified under the terms of the | ||
| * GNU AFFERO GENERAL PUBLIC LICENSE Version 3 | ||
| * (http://www.fsf.org/licensing/licenses/agpl-3.0.html) with the | ||
| * Commons Clause, as found in the associated LICENSE.txt file. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Affero General Public License for more details. | ||
| * | ||
| * Neo4j object code can be licensed independently from the source | ||
| * under separate terms from the AGPL. Inquiries can be directed to: | ||
| * licensing@neo4j.com | ||
| * | ||
| * More information is also available at: | ||
| * https://neo4j.com/licensing/ | ||
| */ | ||
| package org.neo4j.causalclustering.core.replication.monitoring; | ||
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| import org.neo4j.causalclustering.core.replication.ReplicatedContent; | ||
| import org.neo4j.logging.Log; | ||
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| import static java.lang.String.format; | ||
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| public class LoggingReplicationMonitor implements ReplicationMonitor | ||
| { | ||
| private final Log log; | ||
| private int attempts; | ||
| private ReplicatedContent current; | ||
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| public LoggingReplicationMonitor( Log log ) | ||
| { | ||
| this.log = log; | ||
| } | ||
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| @Override | ||
| public void startReplication( ReplicatedContent command ) | ||
| { | ||
| clear( command ); | ||
| } | ||
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| @Override | ||
| public void replicationAttempt() | ||
| { | ||
| if ( attempts > 0 ) | ||
| { | ||
| log.warn( format( "Failed to replicated content. Attempt %d, Content: %s", attempts, current ) ); | ||
| } | ||
| attempts++; | ||
| } | ||
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| @Override | ||
| public void successfulReplication() | ||
| { | ||
| clear( null ); | ||
| } | ||
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| @Override | ||
| public void failedReplication( Throwable t ) | ||
| { | ||
| clear( null ); | ||
| log.error( "Failed to replicated content", t ); | ||
| } | ||
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| private void clear( ReplicatedContent o ) | ||
| { | ||
| current = o; | ||
| attempts = 0; | ||
| } | ||
| } |
36 changes: 36 additions & 0 deletions
36
.../main/java/org/neo4j/causalclustering/core/replication/monitoring/ReplicationMonitor.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,36 @@ | ||
| /* | ||
| * Copyright (c) 2002-2018 "Neo4j," | ||
| * Neo4j Sweden AB [http://neo4j.com] | ||
| * | ||
| * This file is part of Neo4j Enterprise Edition. The included source | ||
| * code can be redistributed and/or modified under the terms of the | ||
| * GNU AFFERO GENERAL PUBLIC LICENSE Version 3 | ||
| * (http://www.fsf.org/licensing/licenses/agpl-3.0.html) with the | ||
| * Commons Clause, as found in the associated LICENSE.txt file. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Affero General Public License for more details. | ||
| * | ||
| * Neo4j object code can be licensed independently from the source | ||
| * under separate terms from the AGPL. Inquiries can be directed to: | ||
| * licensing@neo4j.com | ||
| * | ||
| * More information is also available at: | ||
| * https://neo4j.com/licensing/ | ||
| */ | ||
| package org.neo4j.causalclustering.core.replication.monitoring; | ||
|
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| import org.neo4j.causalclustering.core.replication.ReplicatedContent; | ||
|
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| public interface ReplicationMonitor | ||
| { | ||
| void startReplication( ReplicatedContent command ); | ||
|
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| void replicationAttempt(); | ||
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| void successfulReplication(); | ||
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| void failedReplication( Throwable t ); | ||
| } |
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