| /* |
| * Copyright 2016 The Bazel Authors. 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. |
| */ |
| package com.google.idea.blaze.base.sync.data; |
| |
| import com.google.common.collect.Lists; |
| import com.google.idea.blaze.base.async.executor.BlazeExecutor; |
| import com.google.idea.blaze.base.model.BlazeProjectData; |
| import com.google.idea.blaze.base.scope.BlazeContext; |
| import com.google.idea.blaze.base.scope.output.StatusOutput; |
| import com.google.idea.blaze.base.settings.BlazeImportSettings; |
| import com.google.idea.blaze.base.settings.BlazeImportSettingsManager; |
| import com.google.idea.blaze.base.sync.BlazeSyncPlugin; |
| import com.google.idea.blaze.base.sync.projectstructure.ModuleEditorProvider; |
| import com.google.idea.blaze.base.util.SerializationUtil; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.progress.ProgressIndicator; |
| import com.intellij.openapi.project.Project; |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.List; |
| import javax.annotation.Nullable; |
| |
| /** Stores a cache of blaze project data and issues any side effects when that data is updated. */ |
| public class BlazeProjectDataManagerImpl implements BlazeProjectDataManager { |
| |
| private static final Logger LOG = Logger.getInstance(BlazeProjectDataManagerImpl.class.getName()); |
| |
| private final Project project; |
| |
| @Nullable private volatile BlazeProjectData blazeProjectData; |
| |
| private final Object saveLock = new Object(); |
| |
| public static BlazeProjectDataManagerImpl getImpl(Project project) { |
| return (BlazeProjectDataManagerImpl) BlazeProjectDataManager.getInstance(project); |
| } |
| |
| public BlazeProjectDataManagerImpl(Project project) { |
| this.project = project; |
| } |
| |
| @Nullable |
| public BlazeProjectData loadProjectRoot( |
| BlazeContext context, BlazeImportSettings importSettings) { |
| BlazeProjectData projectData = blazeProjectData; |
| if (projectData != null) { |
| return projectData; |
| } |
| synchronized (this) { |
| projectData = blazeProjectData; |
| return projectData != null ? projectData : loadProject(context, importSettings); |
| } |
| } |
| |
| @Override |
| @Nullable |
| public BlazeProjectData getBlazeProjectData() { |
| return blazeProjectData; |
| } |
| |
| @Override |
| public BlazeSyncPlugin.ModuleEditor editModules() { |
| return ModuleEditorProvider.getInstance() |
| .getModuleEditor( |
| project, BlazeImportSettingsManager.getInstance(project).getImportSettings()); |
| } |
| |
| @Nullable |
| private synchronized BlazeProjectData loadProject( |
| BlazeContext context, BlazeImportSettings importSettings) { |
| BlazeProjectData blazeProjectData = null; |
| try { |
| File file = getCacheFile(project, importSettings); |
| |
| List<ClassLoader> classLoaders = Lists.newArrayList(); |
| for (BlazeSyncPlugin syncPlugin : BlazeSyncPlugin.EP_NAME.getExtensions()) { |
| classLoaders.add(syncPlugin.getClass().getClassLoader()); |
| } |
| classLoaders.add(getClass().getClassLoader()); |
| classLoaders.add(Thread.currentThread().getContextClassLoader()); |
| |
| blazeProjectData = (BlazeProjectData) SerializationUtil.loadFromDisk(file, classLoaders); |
| } catch (IOException e) { |
| String buildSystemName = importSettings.getBuildSystem().getLowerCaseName(); |
| context.output( |
| new StatusOutput( |
| String.format("Stale %s project cache, sync will be needed", buildSystemName))); |
| LOG.info(e); |
| } |
| |
| this.blazeProjectData = blazeProjectData; |
| return blazeProjectData; |
| } |
| |
| public void saveProject( |
| final BlazeImportSettings importSettings, final BlazeProjectData blazeProjectData) { |
| this.blazeProjectData = blazeProjectData; |
| |
| // Can only run one save operation per project at a time |
| synchronized (saveLock) { |
| BlazeExecutor.submitTask( |
| project, |
| "Saving sync data...", |
| (ProgressIndicator indicator) -> { |
| try { |
| File file = getCacheFile(project, importSettings); |
| SerializationUtil.saveToDisk(file, blazeProjectData); |
| } catch (IOException e) { |
| LOG.error( |
| "Could not save cache data file to disk. Please resync project. Error: " |
| + e.getMessage()); |
| } |
| }); |
| } |
| } |
| |
| private static File getCacheFile(Project project, BlazeImportSettings importSettings) { |
| return new File(BlazeDataStorage.getProjectCacheDir(project, importSettings), "cache.dat"); |
| } |
| } |