/**
* Copyright 2005-2014 Red Hat, Inc.
*
* Red Hat licenses this file to you 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 io.fabric8.git.http;
import io.fabric8.zookeeper.ZkPath;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.List;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.recipes.shared.SharedCount;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.http.server.GitServlet;
import org.eclipse.jgit.lib.Ref;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@SuppressWarnings("serial")
public class FabricGitServlet extends GitServlet {
private static final Logger LOGGER = LoggerFactory.getLogger(FabricGitServlet.class);
private final CuratorFramework curator;
private SharedCount counter;
private Git git;
FabricGitServlet(Git git, CuratorFramework curator) {
this.curator = curator;
this.git = git;
}
@Override
public void init(ServletConfig config) throws ServletException {
super.init(config);
try {
counter = new SharedCount(curator, ZkPath.GIT_TRIGGER.getPath(), 0);
counter.start();
} catch (Exception ex) {
LOGGER.error("Error starting SharedCount", ex);
throw new ServletException("Error starting SharedCount", ex);
}
}
@Override
public void destroy() {
super.destroy();
try {
counter.close();
} catch (IOException ex) {
LOGGER.warn("Error closing SharedCount due to: " + ex + ". This exception is ignored.");
}
}
@Override
protected void service(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
LOGGER.debug("GitHttp service req={}", req);
super.service(req, res);
LOGGER.debug("GitHttp service res={}", res);
// Ignore unwanted service requests
String resContentType = res.getContentType();
if (resContentType.contains("x-git-receive-pack-result")) {
LOGGER.info("GitHttp service res={}", res);
int httpStatus = 0;
try {
Method method = res.getClass().getMethod("getStatus");
httpStatus = (Integer) method.invoke(res, new Object[] {});
} catch (Exception ex) {
LOGGER.error("Cannot obtain http response code: " + ex);
}
if (httpStatus == HttpServletResponse.SC_OK) {
try {
List<Ref> refs = git.branchList().call();
LOGGER.info("Remote git content updated: {}", refs);
while (!counter.trySetCount(counter.getCount() + 1));
} catch (Exception ex) {
LOGGER.debug("Error incrementing shared counter: " + ex + ". This exception is ignored.", ex);
LOGGER.warn("Error incrementing shared counter: " + ex + ". This exception is ignored.");
}
}
}
}
}