/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package org.apache.servicemix.gshell.log;
import org.apache.geronimo.gshell.clp.Option;
import org.apache.geronimo.gshell.command.annotation.CommandComponent;
import org.apache.geronimo.gshell.support.OsgiCommandSupport;
import org.apache.servicemix.gshell.log.layout.PatternConverter;
import org.apache.servicemix.gshell.log.layout.PatternParser;
import org.ops4j.pax.logging.spi.PaxLoggingEvent;
/**
* Displays the last log entries
*/
@CommandComponent(id = "log:display", description = "Display log entries")
public class DisplayLog extends OsgiCommandSupport {
@Option(name = "-n", description="Number of entries to display")
protected int entries;
@Option(name = "-p", description="Output formatting pattern")
protected String overridenPattern;
protected String pattern;
protected LruList<PaxLoggingEvent> events;
@Override
protected OsgiCommandSupport createCommand() throws Exception {
DisplayLog command = new DisplayLog();
command.setEvents(getEvents());
command.setPattern(getPattern());
return command;
}
public LruList<PaxLoggingEvent> getEvents() {
return events;
}
public void setEvents(LruList<PaxLoggingEvent> events) {
this.events = events;
}
public String getPattern() {
return pattern;
}
public void setPattern(String pattern) {
this.pattern = pattern;
}
protected Object doExecute() throws Exception {
PatternConverter cnv = new PatternParser(overridenPattern != null ? overridenPattern : pattern).parse();
Iterable<PaxLoggingEvent> le = events.getElements(entries == 0 ? Integer.MAX_VALUE : entries);
StringBuffer sb = new StringBuffer();
for (PaxLoggingEvent event : le) {
sb.setLength(0);
for (PatternConverter pc = cnv; pc != null; pc = pc.next) {
pc.format(sb, event);
}
io.out.print(sb.toString());
if (event.getThrowableStrRep() != null) {
for (String r : event.getThrowableStrRep()) {
io.out.println(r);
}
}
}
io.out.println();
return SUCCESS;
}
}