com.arangodb.shaded.vertx.core.logging.SLF4JLogDelegateFactory Maven / Gradle / Ivy
/*
* Copyright (c) 2011-2019 Contributors to the Eclipse Foundation
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
* which is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
*/
package com.arangodb.shaded.vertx.core.logging;
import com.arangodb.shaded.vertx.core.spi.logging.LogDelegate;
import com.arangodb.shaded.vertx.core.spi.logging.LogDelegateFactory;
import org.slf4j.ILoggerFactory;
import org.slf4j.LoggerFactory;
import org.slf4j.helpers.NOPLoggerFactory;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
/*
* @author Tim Fox
*/
public class SLF4JLogDelegateFactory implements LogDelegateFactory {
static {
// Check we have a valid ILoggerFactory
// Replace the error stream since SLF4J will actually log the classloading error
// when no implementation is available
PrintStream err = System.err;
try {
System.setErr(new PrintStream(new ByteArrayOutputStream()));
LoggerFactory.getILoggerFactory();
} finally {
System.setErr(err);
}
}
@Override
public boolean isAvailable() {
// SLF might be available on the classpath but without configuration
ILoggerFactory fact = LoggerFactory.getILoggerFactory();
return !(fact instanceof NOPLoggerFactory);
}
public LogDelegate createDelegate(final String clazz) {
return new SLF4JLogDelegate(clazz);
}
}