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Posted to notifications@logging.apache.org by "Gary Gregory (JIRA)" <ji...@apache.org> on 2018/11/05 17:30:00 UTC
[jira] [Updated] (LOG4J2-2496) JDBC Appender should reconnect to
the database when a connection goes stale
[ https://issues.apache.org/jira/browse/LOG4J2-2496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gary Gregory updated LOG4J2-2496:
---------------------------------
Description:
The JDBC Appender should reconnect to the database when a database connection goes stale.
Use case:
* Start Log4j configured with a JDBC Appender to MySQL
* Log an event, all is well, it ends up in the database
* Restart the MySQL Service (MySQL80) directly from the Windows Services app
* Log an event, Log4j does not log the event to the database because the MySQL JDBC Driver no longer is connected.
For example:
{noformat}
2018-11-01 06:28:14,408 WARN [server-dispatch-1][com.rs.seagull.httpmonitor.NHttpReverseProxy.IncomingExchangeHandler.dbsapi.acnms.com][EH] [client <- proxy] 00000018 channel org.apache.hc.core5.http.impl.nio.ServerHttp1StreamHandler$2@6ab4c7b8 [requestState=COMPLETE, responseState=IDLE, outputChannel=Http1StreamChannel[80.82.77.33:37422->131.103.20.68:443]] org.apache.logging.log4j.core.appender.AppenderLoggingException: Cannot write logging event or flush buffer; JDBC manager cannot connect to the database.
org.apache.logging.log4j.core.appender.AppenderLoggingException: Cannot write logging event or flush buffer; JDBC manager cannot connect to the database.
at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.connectAndStart(JdbcDatabaseManager.java:111) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.appender.db.AbstractDatabaseManager.write(AbstractDatabaseManager.java:208) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.appender.db.AbstractDatabaseAppender.append(AbstractDatabaseAppender.java:125) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:156) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:129) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:120) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:464) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:448) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:431) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:406) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:63) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.Logger.logMessage(Logger.java:146) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.spi.AbstractLogger.tryLogMessage(AbstractLogger.java:2170) ~[log4j-api-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2125) ~[log4j-api-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2108) ~[log4j-api-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:1827) ~[log4j-api-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.spi.AbstractLogger.info(AbstractLogger.java:1281) ~[log4j-api-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at ...<my app>
Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: The last packet successfully received from the server was 31,601,297 milliseconds ago. The last packet sent successfully to the server was 31,601,297 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2067) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.connectAndStart(JdbcDatabaseManager.java:107) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
... 35 more
Caused by: com.mysql.cj.exceptions.CJCommunicationsException: The last packet successfully received from the server was 31,601,297 milliseconds ago. The last packet sent successfully to the server was 31,601,297 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_181]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_181]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_181]
at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_181]
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.send(NativeProtocol.java:587) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:648) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:980) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.sendQueryString(NativeProtocol.java:915) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.NativeSession.execSQL(NativeSession.java:1182) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2057) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.connectAndStart(JdbcDatabaseManager.java:107) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
... 35 more
Caused by: java.net.SocketException: Connection reset by peer: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method) ~[?:1.8.0_181]
at java.net.SocketOutputStream.socketWrite(Unknown Source) ~[?:1.8.0_181]
at java.net.SocketOutputStream.write(Unknown Source) ~[?:1.8.0_181]
at sun.security.ssl.OutputRecord.writeBuffer(Unknown Source) ~[?:1.8.0_181]
at sun.security.ssl.OutputRecord.write(Unknown Source) ~[?:1.8.0_181]
at sun.security.ssl.SSLSocketImpl.writeRecordInternal(Unknown Source) ~[?:1.8.0_181]
at sun.security.ssl.SSLSocketImpl.writeRecord(Unknown Source) ~[?:1.8.0_181]
at sun.security.ssl.AppOutputStream.write(Unknown Source) ~[?:1.8.0_181]
at java.io.BufferedOutputStream.flushBuffer(Unknown Source) ~[?:1.8.0_181]
at java.io.BufferedOutputStream.flush(Unknown Source) ~[?:1.8.0_181]
at com.mysql.cj.protocol.a.SimplePacketSender.send(SimplePacketSender.java:55) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.TimeTrackingPacketSender.send(TimeTrackingPacketSender.java:50) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.send(NativeProtocol.java:578) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:648) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:980) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.sendQueryString(NativeProtocol.java:915) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.NativeSession.execSQL(NativeSession.java:1182) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2057) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.connectAndStart(JdbcDatabaseManager.java:107) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
... 35 more
{noformat}
The JMS Appender already provides an implementation pattern on how to do this.
was:
The JDBC Appender should reconnect to the database when a connection goes stale.
Use case:
* Start Log4j configured with a JDBC Appender to MySQL
* Log an event, all is well, it ends up in the database
* Restart the MySQL Service (MySQL80) directly from the Windows Services app
* Log an event, Log4j does not log the event to the database because the MySQL JDBC Driver no longer is connected.
For example:
{noformat}
2018-11-01 06:28:14,408 WARN [server-dispatch-1][com.rs.seagull.httpmonitor.NHttpReverseProxy.IncomingExchangeHandler.dbsapi.acnms.com][EH] [client <- proxy] 00000018 channel org.apache.hc.core5.http.impl.nio.ServerHttp1StreamHandler$2@6ab4c7b8 [requestState=COMPLETE, responseState=IDLE, outputChannel=Http1StreamChannel[80.82.77.33:37422->131.103.20.68:443]] org.apache.logging.log4j.core.appender.AppenderLoggingException: Cannot write logging event or flush buffer; JDBC manager cannot connect to the database.
org.apache.logging.log4j.core.appender.AppenderLoggingException: Cannot write logging event or flush buffer; JDBC manager cannot connect to the database.
at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.connectAndStart(JdbcDatabaseManager.java:111) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.appender.db.AbstractDatabaseManager.write(AbstractDatabaseManager.java:208) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.appender.db.AbstractDatabaseAppender.append(AbstractDatabaseAppender.java:125) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:156) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:129) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:120) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:464) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:448) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:431) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:406) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:63) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.core.Logger.logMessage(Logger.java:146) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.spi.AbstractLogger.tryLogMessage(AbstractLogger.java:2170) ~[log4j-api-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2125) ~[log4j-api-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2108) ~[log4j-api-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:1827) ~[log4j-api-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at org.apache.logging.log4j.spi.AbstractLogger.info(AbstractLogger.java:1281) ~[log4j-api-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
at ...<my app>
Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: The last packet successfully received from the server was 31,601,297 milliseconds ago. The last packet sent successfully to the server was 31,601,297 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2067) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.connectAndStart(JdbcDatabaseManager.java:107) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
... 35 more
Caused by: com.mysql.cj.exceptions.CJCommunicationsException: The last packet successfully received from the server was 31,601,297 milliseconds ago. The last packet sent successfully to the server was 31,601,297 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_181]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_181]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_181]
at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_181]
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.send(NativeProtocol.java:587) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:648) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:980) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.sendQueryString(NativeProtocol.java:915) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.NativeSession.execSQL(NativeSession.java:1182) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2057) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.connectAndStart(JdbcDatabaseManager.java:107) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
... 35 more
Caused by: java.net.SocketException: Connection reset by peer: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method) ~[?:1.8.0_181]
at java.net.SocketOutputStream.socketWrite(Unknown Source) ~[?:1.8.0_181]
at java.net.SocketOutputStream.write(Unknown Source) ~[?:1.8.0_181]
at sun.security.ssl.OutputRecord.writeBuffer(Unknown Source) ~[?:1.8.0_181]
at sun.security.ssl.OutputRecord.write(Unknown Source) ~[?:1.8.0_181]
at sun.security.ssl.SSLSocketImpl.writeRecordInternal(Unknown Source) ~[?:1.8.0_181]
at sun.security.ssl.SSLSocketImpl.writeRecord(Unknown Source) ~[?:1.8.0_181]
at sun.security.ssl.AppOutputStream.write(Unknown Source) ~[?:1.8.0_181]
at java.io.BufferedOutputStream.flushBuffer(Unknown Source) ~[?:1.8.0_181]
at java.io.BufferedOutputStream.flush(Unknown Source) ~[?:1.8.0_181]
at com.mysql.cj.protocol.a.SimplePacketSender.send(SimplePacketSender.java:55) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.TimeTrackingPacketSender.send(TimeTrackingPacketSender.java:50) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.send(NativeProtocol.java:578) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:648) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:980) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.protocol.a.NativeProtocol.sendQueryString(NativeProtocol.java:915) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.NativeSession.execSQL(NativeSession.java:1182) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2057) ~[mysql-connector-java-8.0.12.jar:8.0.12]
at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.connectAndStart(JdbcDatabaseManager.java:107) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
... 35 more
{noformat}
The JMS Appender already provides an implementation pattern on how to do this.
> JDBC Appender should reconnect to the database when a connection goes stale
> ---------------------------------------------------------------------------
>
> Key: LOG4J2-2496
> URL: https://issues.apache.org/jira/browse/LOG4J2-2496
> Project: Log4j 2
> Issue Type: Improvement
> Components: Appenders
> Reporter: Gary Gregory
> Assignee: Gary Gregory
> Priority: Major
> Fix For: 3.0.0, 2.11.2
>
>
> The JDBC Appender should reconnect to the database when a database connection goes stale.
> Use case:
> * Start Log4j configured with a JDBC Appender to MySQL
> * Log an event, all is well, it ends up in the database
> * Restart the MySQL Service (MySQL80) directly from the Windows Services app
> * Log an event, Log4j does not log the event to the database because the MySQL JDBC Driver no longer is connected.
> For example:
> {noformat}
> 2018-11-01 06:28:14,408 WARN [server-dispatch-1][com.rs.seagull.httpmonitor.NHttpReverseProxy.IncomingExchangeHandler.dbsapi.acnms.com][EH] [client <- proxy] 00000018 channel org.apache.hc.core5.http.impl.nio.ServerHttp1StreamHandler$2@6ab4c7b8 [requestState=COMPLETE, responseState=IDLE, outputChannel=Http1StreamChannel[80.82.77.33:37422->131.103.20.68:443]] org.apache.logging.log4j.core.appender.AppenderLoggingException: Cannot write logging event or flush buffer; JDBC manager cannot connect to the database.
> org.apache.logging.log4j.core.appender.AppenderLoggingException: Cannot write logging event or flush buffer; JDBC manager cannot connect to the database.
> at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.connectAndStart(JdbcDatabaseManager.java:111) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.core.appender.db.AbstractDatabaseManager.write(AbstractDatabaseManager.java:208) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.core.appender.db.AbstractDatabaseAppender.append(AbstractDatabaseAppender.java:125) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:156) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:129) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:120) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:464) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:448) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:431) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:406) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:63) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.core.Logger.logMessage(Logger.java:146) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.spi.AbstractLogger.tryLogMessage(AbstractLogger.java:2170) ~[log4j-api-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2125) ~[log4j-api-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2108) ~[log4j-api-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:1827) ~[log4j-api-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at org.apache.logging.log4j.spi.AbstractLogger.info(AbstractLogger.java:1281) ~[log4j-api-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> at ...<my app>
> Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: The last packet successfully received from the server was 31,601,297 milliseconds ago. The last packet sent successfully to the server was 31,601,297 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
> at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2067) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
> at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
> at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.connectAndStart(JdbcDatabaseManager.java:107) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> ... 35 more
> Caused by: com.mysql.cj.exceptions.CJCommunicationsException: The last packet successfully received from the server was 31,601,297 milliseconds ago. The last packet sent successfully to the server was 31,601,297 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_181]
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_181]
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_181]
> at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_181]
> at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.protocol.a.NativeProtocol.send(NativeProtocol.java:587) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:648) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:980) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.protocol.a.NativeProtocol.sendQueryString(NativeProtocol.java:915) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.NativeSession.execSQL(NativeSession.java:1182) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2057) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
> at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
> at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.connectAndStart(JdbcDatabaseManager.java:107) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> ... 35 more
> Caused by: java.net.SocketException: Connection reset by peer: socket write error
> at java.net.SocketOutputStream.socketWrite0(Native Method) ~[?:1.8.0_181]
> at java.net.SocketOutputStream.socketWrite(Unknown Source) ~[?:1.8.0_181]
> at java.net.SocketOutputStream.write(Unknown Source) ~[?:1.8.0_181]
> at sun.security.ssl.OutputRecord.writeBuffer(Unknown Source) ~[?:1.8.0_181]
> at sun.security.ssl.OutputRecord.write(Unknown Source) ~[?:1.8.0_181]
> at sun.security.ssl.SSLSocketImpl.writeRecordInternal(Unknown Source) ~[?:1.8.0_181]
> at sun.security.ssl.SSLSocketImpl.writeRecord(Unknown Source) ~[?:1.8.0_181]
> at sun.security.ssl.AppOutputStream.write(Unknown Source) ~[?:1.8.0_181]
> at java.io.BufferedOutputStream.flushBuffer(Unknown Source) ~[?:1.8.0_181]
> at java.io.BufferedOutputStream.flush(Unknown Source) ~[?:1.8.0_181]
> at com.mysql.cj.protocol.a.SimplePacketSender.send(SimplePacketSender.java:55) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.protocol.a.TimeTrackingPacketSender.send(TimeTrackingPacketSender.java:50) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.protocol.a.NativeProtocol.send(NativeProtocol.java:578) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:648) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:980) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.protocol.a.NativeProtocol.sendQueryString(NativeProtocol.java:915) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.NativeSession.execSQL(NativeSession.java:1182) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2057) ~[mysql-connector-java-8.0.12.jar:8.0.12]
> at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
> at org.apache.commons.dbcp2.DelegatingConnection.setAutoCommit(DelegatingConnection.java:543) ~[commons-dbcp2-2.2.0.jar:2.2.0]
> at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.connectAndStart(JdbcDatabaseManager.java:107) ~[log4j-core-2.11.2-SNAPSHOT.jar:2.11.2-SNAPSHOT]
> ... 35 more
> {noformat}
> The JMS Appender already provides an implementation pattern on how to do this.
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