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/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* 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.intellij.openapi.project;
import com.intellij.ide.caches.CacheUpdater;
import com.intellij.ide.caches.FileContent;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.progress.ProcessCanceledException;
import com.intellij.openapi.progress.ProgressIndicator;
import com.intellij.openapi.util.Condition;
import com.intellij.openapi.util.Pair;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.util.containers.ContainerUtil;
import gnu.trove.THashSet;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.*;
public class CacheUpdateSession {
private static final Logger LOG = Logger.getInstance("#" + CacheUpdateSession.class.getName());
private final List<VirtualFile> myFilesToUpdate;
private final int myJobsToDo;
private final List<Pair<CacheUpdater, Collection<VirtualFile>>> myUpdatersWithFiles = new ArrayList<Pair<CacheUpdater, Collection<VirtualFile>>>();
CacheUpdateSession(@NotNull Collection<CacheUpdater> updaters, @NotNull ProgressIndicator indicator) {
List<CacheUpdater> processedUpdaters = new ArrayList<CacheUpdater>();
LinkedHashSet<VirtualFile> set = ContainerUtil.newLinkedHashSet();
try {
int jobsCount = 0;
for (CacheUpdater each : updaters) {
indicator.checkCanceled();
try {
jobsCount += each.getNumberOfPendingUpdateJobs();
List<VirtualFile> updaterFiles = Arrays.asList(each.queryNeededFiles(indicator));
processedUpdaters.add(each);
set.addAll(updaterFiles);
myUpdatersWithFiles.add(Pair.create(each, (Collection<VirtualFile>)new THashSet<VirtualFile>(updaterFiles)));
}
catch (ProcessCanceledException e) {
throw e;
}
catch (Throwable e) {
LOG.error(e);
}
}
myJobsToDo = jobsCount;
}
catch (ProcessCanceledException e) {
for (CacheUpdater each : processedUpdaters) {
each.canceled();
}
throw e;
}
myFilesToUpdate = ContainerUtil.newArrayList(set);
}
public int getNumberOfPendingUpdateJobs() {
return myJobsToDo;
}
@NotNull
public Collection<VirtualFile> getFilesToUpdate() {
return myFilesToUpdate;
}
@Nullable
private synchronized Pair<CacheUpdater, Collection<VirtualFile>> getPair(@NotNull final VirtualFile file) {
return ContainerUtil.find(myUpdatersWithFiles, new Condition<Pair<CacheUpdater, Collection<VirtualFile>>>() {
@Override
public boolean value(Pair<CacheUpdater, Collection<VirtualFile>> cacheUpdaterCollectionPair) {
return cacheUpdaterCollectionPair.second.contains(file);
}
});
}
public void processFile(@NotNull FileContent content) {
VirtualFile file = content.getVirtualFile();
boolean isValid = file.isValid() && !file.isDirectory();
Throwable exception = null;
while (true) {
Pair<CacheUpdater, Collection<VirtualFile>> pair = getPair(file);
if (pair == null) break;
CacheUpdater eachUpdater = pair.getFirst();
Collection<VirtualFile> eachFiles = pair.getSecond();
try {
if (isValid && exception == null) {
eachUpdater.processFile(content);
}
}
catch (ProcessCanceledException e) {
throw e;
}
catch (Throwable e) {
exception = e;
}
removeFile(file, eachUpdater, eachFiles);
}
if (exception instanceof RuntimeException) throw (RuntimeException)exception;
if (exception instanceof Error) throw (Error)exception;
if (exception != null) throw new RuntimeException(exception);
}
private synchronized void removeFile(@NotNull VirtualFile file, @NotNull CacheUpdater eachUpdater, @NotNull Collection<VirtualFile> eachFiles) {
eachFiles.remove(file);
if (eachFiles.isEmpty()) {
try {
eachUpdater.updatingDone();
}
catch (ProcessCanceledException e) {
throw e;
}
catch (Throwable e) {
LOG.error(e);
}
}
}
public void updatingDone() {
for (Pair<CacheUpdater, Collection<VirtualFile>> eachPair : myUpdatersWithFiles) {
try {
CacheUpdater eachUpdater = eachPair.first;
eachUpdater.updatingDone();
if (!eachPair.second.isEmpty()) {
LOG.error(CacheUpdater.class.getSimpleName() + " " + eachUpdater + " has not finished yet:\n" + new ArrayList<VirtualFile>(eachPair.second));
}
}
catch (ProcessCanceledException e) {
throw e;
}
catch (Exception e) {
LOG.error(e);
}
}
}
public void canceled() {
for (Pair<CacheUpdater, Collection<VirtualFile>> eachPair : myUpdatersWithFiles) {
eachPair.first.canceled();
}
}
}
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