com.google.gwt.dev.codeserver.OutboxDir Maven / Gradle / Ivy
/*
* Copyright 2011 Google Inc.
*
* 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.
*/
package com.google.gwt.dev.codeserver;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.TreeLogger.Type;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.dev.util.Util;
import java.io.File;
import java.io.IOException;
/**
* The directory tree where Super Dev Mode keeps all the files for one GWT app.
* Each time we recompile the app, we create a new subdirectory (see {@link CompileDir}).
* In addition, there are some files that are shared between recompiles, such as
* the unit cache.
*/
class OutboxDir {
private static final String COMPILE_DIR_PREFIX = "compile-";
private static final int MAX_CREATE_DIRECTORY_RETRIES = 50;
private final File root;
private int nextCompileId = 1;
/**
* @see #create
*/
private OutboxDir(File root) {
this.root = root;
}
File getSpeedTracerLogFile() {
return new File(root, "speedtracer.html");
}
/**
* Creates a fresh, empty compile directory.
*/
CompileDir makeCompileDir(TreeLogger logger)
throws UnableToCompleteException {
for (int i = 0; i < MAX_CREATE_DIRECTORY_RETRIES; i++) {
int candidateId = nextCompileId++;
File candidate = new File(root, COMPILE_DIR_PREFIX + candidateId);
try {
return CompileDir.create(candidate, logger);
} catch (UnableToCompleteException e) {
// try again
}
}
logger.log(Type.ERROR, "Gave up trying to create a compile directory.");
throw new UnableToCompleteException();
}
/**
* Creates an outbox directory, doing any cleanup needed.
* @param dir the directory to use. It need not exist, but
* the parent dir should exist.
*/
static OutboxDir create(File dir, TreeLogger logger) throws IOException {
if (!dir.isDirectory() && !dir.mkdir()) {
throw new IOException("can't create app directory: " + dir);
}
File[] children = dir.listFiles();
if (children == null) {
throw new IOException("unable to list files in " + dir);
}
// Try to clean up existing subdirectories.
// (This is not guaranteed to delete all directories on Windows if a directory is locked.)
for (File candidate : children) {
if (candidate.getName().startsWith(COMPILE_DIR_PREFIX)) {
Util.recursiveDelete(candidate, false);
if (candidate.exists()) {
logger.log(Type.WARN, "unable to delete '" + candidate + "' (skipped)");
}
}
}
return new OutboxDir(dir);
}
}