| // Copyright (C) 2014 The Android Open Source Project |
| // |
| // 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.googlesource.gerrit.plugins.web; |
| |
| import com.google.common.collect.Lists; |
| import com.google.gerrit.server.plugins.InvalidPluginException; |
| import com.google.gerrit.server.plugins.PluginContentScanner; |
| import com.google.gerrit.server.plugins.PluginEntry; |
| import com.google.inject.Inject; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.lang.annotation.Annotation; |
| import java.nio.file.FileVisitOption; |
| import java.nio.file.FileVisitResult; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.SimpleFileVisitor; |
| import java.nio.file.attribute.BasicFileAttributes; |
| import java.util.Collections; |
| import java.util.EnumSet; |
| import java.util.Enumeration; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Optional; |
| import java.util.jar.Manifest; |
| |
| public class WebPluginScanner implements PluginContentScanner { |
| private final Path staticResourcesPath; |
| |
| @Inject |
| public WebPluginScanner(Path rootDir) { |
| this.staticResourcesPath = rootDir; |
| } |
| |
| @Override |
| public Manifest getManifest() throws IOException { |
| return new Manifest(); |
| } |
| |
| @Override |
| public Map<Class<? extends Annotation>, Iterable<ExtensionMetaData>> scan( |
| String pluginName, Iterable<Class<? extends Annotation>> annotations) |
| throws InvalidPluginException { |
| return Collections.emptyMap(); |
| } |
| |
| @Override |
| public Optional<PluginEntry> getEntry(String resourcePath) throws IOException { |
| Path resourceFile = getResourceFile(resourcePath); |
| if (Files.exists(resourceFile) && Files.size(resourceFile) > 0) { |
| return resourceOf(resourcePath); |
| } else { |
| return Optional.empty(); |
| } |
| } |
| |
| private Optional<PluginEntry> resourceOf(String resourcePath) throws IOException { |
| Path file = getResourceFile(resourcePath); |
| long fileSize = Files.size(file); |
| if (Files.exists(file) && fileSize > 0) { |
| long fileLastModifiedTimeMillis = Files.getLastModifiedTime(file).toMillis(); |
| if (resourcePath.endsWith("html")) { |
| return Optional.of(new PluginEntry(resourcePath, fileLastModifiedTimeMillis)); |
| } else { |
| return Optional.of( |
| new PluginEntry(resourcePath, fileLastModifiedTimeMillis, Optional.of(fileSize))); |
| } |
| } else { |
| return Optional.empty(); |
| } |
| } |
| |
| private Path getResourceFile(String resourcePath) { |
| return staticResourcesPath.resolve(resourcePath); |
| } |
| |
| @Override |
| public InputStream getInputStream(PluginEntry entry) throws IOException { |
| String name = entry.getName(); |
| if (name.endsWith("html")) { |
| return new SSIPageInputStream(staticResourcesPath, name); |
| } else { |
| return Files.newInputStream(getResourceFile(name)); |
| } |
| } |
| |
| @Override |
| public Enumeration<PluginEntry> entries() { |
| final List<PluginEntry> resourcesList = Lists.newArrayList(); |
| try { |
| Files.walkFileTree( |
| staticResourcesPath, |
| EnumSet.of(FileVisitOption.FOLLOW_LINKS), |
| Integer.MAX_VALUE, |
| new SimpleFileVisitor<Path>() { |
| private int basicPathLength = staticResourcesPath.toAbsolutePath().toString().length(); |
| |
| @Override |
| public FileVisitResult visitFile(Path path, BasicFileAttributes attrs) |
| throws IOException { |
| Optional<PluginEntry> resource = resourceOf(relativePathOf(path)); |
| if (resource.isPresent()) { |
| resourcesList.add(resource.get()); |
| } |
| return FileVisitResult.CONTINUE; |
| } |
| |
| private String relativePathOf(Path path) { |
| return path.toFile().getAbsolutePath().substring(basicPathLength); |
| } |
| }); |
| } catch (IOException e) { |
| throw new IllegalArgumentException("Cannot scan resource files in plugin", e); |
| } |
| return Collections.enumeration(resourcesList); |
| } |
| } |