com.google.gerrit.httpd.gitweb.GitwebJavaScriptServlet Maven / Gradle / Ivy
// Copyright (C) 2010 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.google.gerrit.httpd.gitweb;
import static com.google.gerrit.common.FileUtil.lastModified;
import com.google.common.io.ByteStreams;
import com.google.gerrit.server.config.GitwebCgiConfig;
import com.google.gerrit.util.http.CacheHeaders;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.NoSuchFileException;
import java.nio.file.Path;
import java.util.concurrent.TimeUnit;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@Singleton
class GitwebJavaScriptServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
private final long modified;
private final byte[] raw;
@Inject
GitwebJavaScriptServlet(GitwebCgiConfig gitwebCgiConfig) throws IOException {
byte[] png;
Path src = gitwebCgiConfig.getGitwebJs();
if (src != null) {
try (InputStream in = Files.newInputStream(src)) {
png = ByteStreams.toByteArray(in);
} catch (NoSuchFileException e) {
png = null;
}
modified = lastModified(src);
} else {
modified = -1;
png = null;
}
raw = png;
}
@Override
protected long getLastModified(HttpServletRequest req) {
return modified;
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse rsp) throws IOException {
if (raw != null) {
rsp.setContentType("text/javascript");
rsp.setContentLength(raw.length);
rsp.setDateHeader("Last-Modified", modified);
CacheHeaders.setCacheable(req, rsp, 5, TimeUnit.MINUTES);
try (ServletOutputStream os = rsp.getOutputStream()) {
os.write(raw);
}
} else {
CacheHeaders.setNotCacheable(rsp);
rsp.sendError(HttpServletResponse.SC_NOT_FOUND);
}
}
}