| /* |
| * Copyright 2000-2013 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 org.jetbrains.jps.classFilesIndex.indexer.api; |
| |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.util.containers.ContainerUtil; |
| import com.intellij.util.io.PersistentHashMap; |
| import org.jetbrains.jps.builders.java.dependencyView.Mappings; |
| import org.jetbrains.jps.classFilesIndex.indexer.api.storage.ClassFilesIndexStorageBase; |
| import org.jetbrains.jps.classFilesIndex.indexer.api.storage.ClassFilesIndexStorageWriter; |
| import org.jetbrains.jps.incremental.CompileContext; |
| import org.jetbrains.org.objectweb.asm.ClassReader; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * @author Dmitry Batkovich |
| */ |
| public class ClassFilesIndexWriter<K, V> { |
| private static final Logger LOG = Logger.getInstance(ClassFilesIndexWriter.class); |
| |
| private final ClassFileIndexer<K, V> myIndexer; |
| private final boolean myEmpty; |
| private final Mappings myMappings; |
| private final ClassFilesIndexStorageWriter<K, V> myIndex; |
| |
| protected ClassFilesIndexWriter(final ClassFileIndexer<K, V> indexer, final CompileContext compileContext) { |
| myIndexer = indexer; |
| final File storageDir = getIndexRoot(compileContext); |
| final Set<String> containingFileNames = listFiles(storageDir); |
| if (!containingFileNames.contains("version") || !containingFileNames.contains(IndexState.STATE_FILE_NAME)) { |
| throw new IllegalStateException("version or state file for index " + indexer.getIndexCanonicalName() + " not found in " + storageDir.getAbsolutePath()); |
| } |
| ClassFilesIndexStorageWriter<K, V> index = null; |
| IOException exception = null; |
| LOG.debug("start open... " + indexer.getIndexCanonicalName()); |
| myMappings = compileContext.getProjectDescriptor().dataManager.getMappings(); |
| for (int attempt = 0; attempt < 2; attempt++) { |
| try { |
| index = new ClassFilesIndexStorageWriter<K, V>(storageDir, |
| myIndexer.getKeyDescriptor(), |
| myIndexer.getDataExternalizer(), |
| myMappings); |
| break; |
| } |
| catch (final IOException e) { |
| exception = e; |
| PersistentHashMap.deleteFilesStartingWith(ClassFilesIndexStorageBase.getIndexFile(storageDir)); |
| } |
| } |
| LOG.debug("opened " + indexer.getIndexCanonicalName()); |
| if (index == null) { |
| throw new RuntimeException(exception); |
| } |
| myIndex = index; |
| myEmpty = IndexState.EXIST != IndexState.load(storageDir) || exception != null; |
| IndexState.CORRUPTED.save(storageDir); |
| } |
| |
| private static Set<String> listFiles(final File dir) { |
| final String[] containingFileNames = dir.list(); |
| return containingFileNames == null ? Collections.<String>emptySet() : ContainerUtil.newHashSet(containingFileNames); |
| } |
| |
| private File getIndexRoot(final CompileContext compileContext) { |
| final File rootFile = compileContext.getProjectDescriptor().dataManager.getDataPaths().getDataStorageRoot(); |
| return ClassFilesIndexStorageBase.getIndexDir(myIndexer.getIndexCanonicalName(), rootFile); |
| } |
| |
| public final boolean isEmpty() { |
| return myEmpty; |
| } |
| |
| public final void close(final CompileContext compileContext) { |
| try { |
| myIndex.close(); |
| IndexState.EXIST.save(getIndexRoot(compileContext)); |
| } |
| catch (final IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| public final void update(final String id, final ClassReader inputData) { |
| for (final Map.Entry<K, V> e : myIndexer.map(inputData, myMappings).entrySet()) { |
| myIndex.putData(e.getKey(), e.getValue(), id); |
| } |
| } |
| } |