com.alterioncorp.perfjdbc.sql.PerfCommonDataSource Maven / Gradle / Ivy

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Wrapper JDBC driver that monitors time spent inside JDBC code by thread. JDBC driver URL: jdbc:alterion:perf://class=<TARGET_DRIVER_CLASS>|url=<TARGET_JDBC_URL> To get the time in millis spent inside JDBC for thread: StopWatch.getTime()

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package com.alterioncorp.perfjdbc.sql;

import java.io.PrintWriter;
import java.sql.SQLException;
import java.sql.SQLFeatureNotSupportedException;
import java.util.logging.Logger;

import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.CommonDataSource;

import com.alterioncorp.perfjdbc.PerfProxy;
import com.alterioncorp.perfjdbc.StopWatch;

public abstract class PerfCommonDataSource implements CommonDataSource, PerfProxy {
	
	private CommonDataSource targetDataSource;
	private String targetJndi;

	public PerfCommonDataSource() {
		super();
	}
	
	public PerfCommonDataSource(CommonDataSource targetDataSource) {
		super();
		this.targetDataSource = targetDataSource;
	}
	
	public PerfCommonDataSource(String targetJndi) {
		super();
		this.targetJndi = targetJndi;
	}


	@Override
	public PrintWriter getLogWriter() throws SQLException {
		StopWatch.start();
		try {
			return this.getTargetCommonDataSource().getLogWriter();
		}
		finally {
			StopWatch.stop();
		}
	}

	@Override
	public void setLogWriter(PrintWriter out) throws SQLException {
		StopWatch.start();
		try {
			this.getTargetCommonDataSource().setLogWriter(out);
		}
		finally {
			StopWatch.stop();
		}
	}

	@Override
	public int getLoginTimeout() throws SQLException {
		StopWatch.start();
		try {
			return this.getTargetCommonDataSource().getLoginTimeout();
		}
		finally {
			StopWatch.stop();
		}
	}

	@Override
	public void setLoginTimeout(int seconds) throws SQLException {
		StopWatch.start();
		try {
			this.getTargetCommonDataSource().setLoginTimeout(seconds);
		}
		finally {
			StopWatch.stop();
		}
	}

	@Override
	public Logger getParentLogger() throws SQLFeatureNotSupportedException {
		StopWatch.start();
		try {
			return this.getTargetCommonDataSource().getParentLogger();
		}
		finally {
			StopWatch.stop();
		}
	}

	public String getTargetJndi() {
		return targetJndi;
	}

	public void setTargetJndi(String targetJndi) {
		this.targetJndi = targetJndi;
	}
	
	protected final CommonDataSource getTargetCommonDataSource() {
		if (targetDataSource == null) {
			try {
				InitialContext initialContext = new InitialContext();
				targetDataSource = (CommonDataSource)initialContext.lookup(targetJndi);
			}
			catch (NamingException e) {
				throw new RuntimeException(e);
			}
		}
		return targetDataSource;
	}
}