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/*******************************************************************************
* ============LICENSE_START====================================================
* * org.onap.aaf
* * ===========================================================================
* * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* * ===========================================================================
* * Licensed under the Apache License, Version 2.0 (the "License");
* * you may not use this file except in compliance with the License.
* * You may obtain a copy of the License at
* *
* * http://www.apache.org/licenses/LICENSE-2.0
* *
* * Unless required by applicable law or agreed to in writing, software
* * distributed under the License is distributed on an "AS IS" BASIS,
* * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* * See the License for the specific language governing permissions and
* * limitations under the License.
* * ============LICENSE_END====================================================
* *
* * ECOMP is a trademark and service mark of AT&T Intellectual Property.
* *
******************************************************************************/
package org.onap.aaf.inno.env;
import java.io.PrintStream;
import java.util.Date;
import org.onap.aaf.inno.env.util.Chrono;
/**
* LogTarget is the interface with which to assign any kind of Logging Implementations.
*
* Implement for any Logging Library of your choice, and for any logging string Format desired.
*
* Included are several Static Implementations for various uses:
* NULL: Does nothing with Logging Messages
* SYSOUT: Writes messages in general form to System Out
* SYSERR: Writes messages in general form to System Err
*
*
*/
public interface LogTarget {
public abstract void log(Object... msgs);
public abstract void log(Throwable e, Object ... msgs);
public abstract boolean isLoggable();
public abstract void printf(String fmt, Object ... vars);
// A Convenient LogTarget to insert when a NO-OP is desired.
public static final LogTarget NULL = new LogTarget() {
public void log(Object ... msgs) {
}
public void log(Throwable t, Object ... msgs) {
}
public boolean isLoggable() {
return false;
}
@Override
public void printf(String fmt, Object ... vars) {
}
};
// A Convenient LogTarget to write to the Console
public static final LogTarget SYSOUT = new LogTarget() {
public void log(Object ... msgs) {
PrintStream out = System.out;
out.print(org.onap.aaf.inno.env.util.Chrono.dateFmt.format(new Date()));
out.print(": ");
for(Object str : msgs) {
if(str!=null) {
out.print(str.toString());
out.print(' ');
} else {
out.print("null ");
}
}
out.println();
}
public void log(Throwable t, Object ... msgs) {
PrintStream out = System.out;
out.print(Chrono.dateFmt.format(new Date()));
out.print(": ");
for(Object str : msgs) {
out.print(str.toString());
out.print(' ');
}
out.println();
t.printStackTrace(out);
out.println();
}
public boolean isLoggable() {
return true;
}
@Override
public void printf(String fmt, Object ... vars) {
log(String.format(fmt,vars));
}
};
// A Convenient LogTarget to write to the Console
public static final LogTarget SYSERR = new LogTarget() {
public void log(Object ... msgs) {
PrintStream out = System.err;
out.print(Chrono.dateFmt.format(new Date()));
out.print(": ");
for(Object str : msgs) {
out.print(str.toString());
out.print(' ');
}
out.println();
out.flush();
}
public void log(Throwable t, Object ... msgs) {
PrintStream out = System.err;
out.print(Chrono.dateFmt.format(new Date()));
out.print(": ");
for(Object str : msgs) {
out.print(str.toString());
out.print(' ');
}
out.println();
t.printStackTrace(out);
}
public boolean isLoggable() {
return true;
}
@Override
public void printf(String fmt, Object ... vars) {
log(String.format(fmt,vars));
}
};
};
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