/*
* 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.tools.ant.taskdefs;
import java.util.Hashtable;
import org.apache.tools.ant.BuildEvent;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.SubBuildListener;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.types.EnumeratedAttribute;
import org.apache.tools.ant.types.LogLevel;
/**
* Adds a listener to the current build process that records the
* output to a file.
* <p>Several recorders can exist at the same time. Each recorder is
* associated with a file. The filename is used as a unique identifier for
* the recorders. The first call to the recorder task with an unused filename
* will create a recorder (using the parameters provided) and add it to the
* listeners of the build. All subsequent calls to the recorder task using
* this filename will modify that recorders state (recording or not) or other
* properties (like logging level).</p>
* <p>Some technical issues: the file's print stream is flushed for "finished"
* events (buildFinished, targetFinished and taskFinished), and is closed on
* a buildFinished event.</p>
* @see RecorderEntry
* @version 0.5
* @since Ant 1.4
* @ant.task name="record" category="utility"
*/
public class Recorder extends Task implements SubBuildListener {
//////////////////////////////////////////////////////////////////////
// ATTRIBUTES
/** The name of the file to record to. */
private String filename = null;
/**
* Whether or not to append. Need Boolean to record an unset state (null).
*/
private Boolean append = null;
/**
* Whether to start or stop recording. Need Boolean to record an unset
* state (null).
*/
private Boolean start = null;
/** The level to log at. A level of -1 means not initialized yet. */
private int loglevel = -1;
/** Strip task banners if true. */
private boolean emacsMode = false;
/** The list of recorder entries. */
private static Hashtable recorderEntries = new Hashtable();
//////////////////////////////////////////////////////////////////////
// CONSTRUCTORS / INITIALIZERS
/**
* Overridden so we can add the task as build listener.
*
* @since Ant 1.7
*/
public void init() {
getProject().addBuildListener(this);
}
//////////////////////////////////////////////////////////////////////
// ACCESSOR METHODS
/**
* Sets the name of the file to log to, and the name of the recorder
* entry.
*
* @param fname File name of logfile.
*/
public void setName(String fname) {
filename = fname;
}
/**
* Sets the action for the associated recorder entry.
*
* @param action The action for the entry to take: start or stop.
*/
public void setAction(ActionChoices action) {
if (action.getValue().equalsIgnoreCase("start")) {
start = Boolean.TRUE;
} else {
start = Boolean.FALSE;
}
}
/**
* Whether or not the logger should append to a previous file.
* @param append if true, append to a previous file.
*/
public void setAppend(boolean append) {
this.append = (append ? Boolean.TRUE : Boolean.FALSE);
}
/**
* Set emacs mode.
* @param emacsMode if true use emacs mode
*/
public void setEmacsMode(boolean emacsMode) {
this.emacsMode = emacsMode;
}
/**
* Sets the level to which this recorder entry should log to.
* @param level the level to set.
* @see VerbosityLevelChoices
*/
public void setLoglevel(VerbosityLevelChoices level) {
loglevel = level.getLevel();
}
//////////////////////////////////////////////////////////////////////
// CORE / MAIN BODY
/**
* The main execution.
* @throws BuildException on error
*/
public void execute() throws BuildException {
if (filename == null) {
throw new BuildException("No filename specified");
}
getProject().log("setting a recorder for name " + filename,
Project.MSG_DEBUG);
// get the recorder entry
RecorderEntry recorder = getRecorder(filename, getProject());
// set the values on the recorder
recorder.setMessageOutputLevel(loglevel);
recorder.setEmacsMode(emacsMode);
if (start != null) {
if (start.booleanValue()) {
recorder.reopenFile();
recorder.setRecordState(start);
} else {
recorder.setRecordState(start);
recorder.closeFile();
}
}
}
//////////////////////////////////////////////////////////////////////
// INNER CLASSES
/**
* A list of possible values for the <code>setAction()</code> method.
* Possible values include: start and stop.
*/
public static class ActionChoices extends EnumeratedAttribute {
private static final String[] VALUES = {"start", "stop"};
/**
* @see EnumeratedAttribute#getValues()
*/
/** {@inheritDoc}. */
public String[] getValues() {
return VALUES;
}
}
/**
* A list of possible values for the <code>setLoglevel()</code> method.
* Possible values include: error, warn, info, verbose, debug.
*/
public static class VerbosityLevelChoices extends LogLevel {
}
/**
* Gets the recorder that's associated with the passed in name. If the
* recorder doesn't exist, then a new one is created.
* @param name the name of the recoder
* @param proj the current project
* @return a recorder
* @throws BuildException on error
*/
protected RecorderEntry getRecorder(String name, Project proj)
throws BuildException {
Object o = recorderEntries.get(name);
RecorderEntry entry;
if (o == null) {
// create a recorder entry
entry = new RecorderEntry(name);
if (append == null) {
entry.openFile(false);
} else {
entry.openFile(append.booleanValue());
}
entry.setProject(proj);
recorderEntries.put(name, entry);
} else {
entry = (RecorderEntry) o;
}
return entry;
}
/**
* Empty implementation required by SubBuildListener interface.
* @param event ignored.
* @since Ant 1.7
*/
public void buildStarted(BuildEvent event) {
}
/**
* Empty implementation required by SubBuildListener interface.
* @param event ignored.
* @since Ant 1.7
*/
public void subBuildStarted(BuildEvent event) {
}
/**
* Empty implementation required by SubBuildListener interface.
* @param event ignored.
* @since Ant 1.7
*/
public void targetStarted(BuildEvent event) {
}
/**
* Empty implementation required by SubBuildListener interface.
* @param event ignored.
* @since Ant 1.7
*/
public void targetFinished(BuildEvent event) {
}
/**
* Empty implementation required by SubBuildListener interface.
* @param event ignored.
* @since Ant 1.7
*/
public void taskStarted(BuildEvent event) {
}
/**
* Empty implementation required by SubBuildListener interface.
* @param event ignored.
* @since Ant 1.7
*/
public void taskFinished(BuildEvent event) {
}
/**
* Empty implementation required by SubBuildListener interface.
* @param event ignored.
* @since Ant 1.7
*/
public void messageLogged(BuildEvent event) {
}
/**
* Cleans recorder registry.
* @param event ignored.
* @since Ant 1.7
*/
public void buildFinished(BuildEvent event) {
cleanup();
}
/**
* Cleans recorder registry, if this is the subbuild the task has
* been created in.
* @param event ignored.
* @since Ant 1.7
*/
public void subBuildFinished(BuildEvent event) {
if (event.getProject() == getProject()) {
cleanup();
}
}
/**
* cleans recorder registry and removes itself from BuildListener list.
*
* @since Ant 1.7
*/
private void cleanup() {
recorderEntries.clear();
getProject().removeBuildListener(this);
}
}
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