net.snowflake.client.log.SFLoggerFactory Maven / Gradle / Ivy
/*
* Copyright (c) 2012-2019 Snowflake Computing Inc. All rights reserved.
*/
package net.snowflake.client.log;
import static net.snowflake.client.jdbc.SnowflakeUtil.systemGetProperty;
/**
* Used to create SFLogger instance
*
* Created by hyu on 11/17/16.
*/
public class SFLoggerFactory
{
private static LoggerImpl loggerImplementation;
enum LoggerImpl
{
SLF4JLOGGER("net.snowflake.client.log.SLF4JLogger"),
JDK14LOGGER("net.snowflake.client.log.JDK14Logger");
private String loggerImplClassName;
LoggerImpl(String loggerClass)
{
this.loggerImplClassName = loggerClass;
}
public String getLoggerImplClassName()
{
return this.loggerImplClassName;
}
public static LoggerImpl fromString(String loggerImplClassName)
{
if (loggerImplClassName != null)
{
for (LoggerImpl imp : LoggerImpl.values())
{
if (loggerImplClassName.equalsIgnoreCase(
imp.getLoggerImplClassName()))
{
return imp;
}
}
}
return null;
}
}
/**
* @param clazz Class type that the logger is instantiated
* @return An SFLogger instance given the name of the class
*/
public static SFLogger getLogger(Class clazz)
{
// only need to determine the logger implementation only once
if (loggerImplementation == null)
{
String logger = systemGetProperty("net.snowflake.jdbc.loggerImpl");
loggerImplementation = LoggerImpl.fromString(logger);
if (loggerImplementation == null)
{
// default to use java util logging
loggerImplementation = LoggerImpl.JDK14LOGGER;
}
}
switch (loggerImplementation)
{
case SLF4JLOGGER:
return new SLF4JLogger(clazz);
case JDK14LOGGER:
default:
return new JDK14Logger(clazz.getName());
}
}
}