Package brave.mysql

Class TracingStatementInterceptor

java.lang.Object

brave.mysql.TracingStatementInterceptor

All Implemented Interfaces:

com.mysql.jdbc.Extension, com.mysql.jdbc.StatementInterceptorV2

public class TracingStatementInterceptor
extends Object
implements com.mysql.jdbc.StatementInterceptorV2

A MySQL statement interceptor that will report to Zipkin how long each statement takes.

To use it, append ?statementInterceptors=brave.mysql.TracingStatementInterceptor to the end of the connection url.

Constructor Summary

Constructors

Constructor	Description
TracingStatementInterceptor()

Method Summary

Modifier and Type	Method	Description
void	destroy()
boolean	executeTopLevelOnly()
void	init(com.mysql.jdbc.Connection conn, Properties props)
com.mysql.jdbc.ResultSetInternalMethods	postProcess(String sql, com.mysql.jdbc.Statement interceptedStatement, com.mysql.jdbc.ResultSetInternalMethods originalResultSet, com.mysql.jdbc.Connection connection, int warningCount, boolean noIndexUsed, boolean noGoodIndexUsed, SQLException statementException)
com.mysql.jdbc.ResultSetInternalMethods	preProcess(String sql, com.mysql.jdbc.Statement interceptedStatement, com.mysql.jdbc.Connection connection)	Uses ThreadLocalSpan as there's no attribute namespace shared between callbacks, but all callbacks happen on the same thread.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TracingStatementInterceptor

public TracingStatementInterceptor()

Method Detail

preProcess

public com.mysql.jdbc.ResultSetInternalMethods preProcess(String sql,
                                                          com.mysql.jdbc.Statement interceptedStatement,
                                                          com.mysql.jdbc.Connection connection)

Uses ThreadLocalSpan as there's no attribute namespace shared between callbacks, but all callbacks happen on the same thread.

Uses ThreadLocalSpan.CURRENT_TRACER and this interceptor initializes before tracing.

Specified by:

preProcess in interface com.mysql.jdbc.StatementInterceptorV2

postProcess

public com.mysql.jdbc.ResultSetInternalMethods postProcess(String sql,
                                                           com.mysql.jdbc.Statement interceptedStatement,
                                                           com.mysql.jdbc.ResultSetInternalMethods originalResultSet,
                                                           com.mysql.jdbc.Connection connection,
                                                           int warningCount,
                                                           boolean noIndexUsed,
                                                           boolean noGoodIndexUsed,
                                                           SQLException statementException)

Specified by:

postProcess in interface com.mysql.jdbc.StatementInterceptorV2

executeTopLevelOnly

public boolean executeTopLevelOnly()

Specified by:

executeTopLevelOnly in interface com.mysql.jdbc.StatementInterceptorV2

init

public void init(com.mysql.jdbc.Connection conn,
                 Properties props)

Specified by:

init in interface com.mysql.jdbc.Extension

Specified by:

init in interface com.mysql.jdbc.StatementInterceptorV2

destroy

public void destroy()

Specified by:

destroy in interface com.mysql.jdbc.Extension

Specified by:

destroy in interface com.mysql.jdbc.StatementInterceptorV2