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+/**
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+ * Licensed to the Apache Software Foundation (ASF) under one
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+ * or more contributor license agreements. See the NOTICE file
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+ * distributed with this work for additional information
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+ * regarding copyright ownership. The ASF licenses this file
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+ * to you under the Apache License, Version 2.0 (the
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+ * "License"); you may not use this file except in compliance
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+ * with the License. You may obtain a copy of the License at
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+ *
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+ * http://www.apache.org/licenses/LICENSE-2.0
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+ *
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+ * Unless required by applicable law or agreed to in writing, software
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+ * distributed under the License is distributed on an "AS IS" BASIS,
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+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+ * See the License for the specific language governing permissions and
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+ * limitations under the License.
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+ */
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+
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+package org.apache.hadoop.yarn.server.nodemanager.webapp;
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+
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+import java.io.IOException;
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+import java.io.PrintWriter;
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+
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+import javax.inject.Inject;
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+import javax.inject.Singleton;
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+import javax.servlet.FilterChain;
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+import javax.servlet.ServletException;
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+import javax.servlet.http.HttpServletRequest;
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+import javax.servlet.http.HttpServletResponse;
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+
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+import org.apache.hadoop.conf.Configuration;
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+import org.apache.hadoop.http.HtmlQuoting;
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+import org.apache.hadoop.yarn.api.records.ApplicationId;
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+import org.apache.hadoop.yarn.api.records.ContainerId;
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+import org.apache.hadoop.yarn.conf.YarnConfiguration;
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+import org.apache.hadoop.yarn.server.nodemanager.Context;
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+import org.apache.hadoop.yarn.server.nodemanager.containermanager.application.Application;
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+import org.apache.hadoop.yarn.webapp.Controller.RequestContext;
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+import com.google.inject.Injector;
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+import com.sun.jersey.guice.spi.container.servlet.GuiceContainer;
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+
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+@Singleton
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+public class NMWebAppFilter extends GuiceContainer{
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+
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+ private Injector injector;
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+ private Context nmContext;
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+
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+ private static final long serialVersionUID = 1L;
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+
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+ @Inject
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+ public NMWebAppFilter(Injector injector, Context nmContext) {
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+ super(injector);
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+ this.injector = injector;
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+ this.nmContext = nmContext;
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+ }
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+
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+ @Override
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+ public void doFilter(HttpServletRequest request,
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+ HttpServletResponse response, FilterChain chain) throws IOException,
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+ ServletException {
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+ String uri = HtmlQuoting.quoteHtmlChars(request.getRequestURI());
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+ String redirectPath = containerLogPageRedirectPath(uri);
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+ if (redirectPath != null) {
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+ String redirectMsg =
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+ "Redirecting to log server" + " : " + redirectPath;
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+ PrintWriter out = response.getWriter();
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+ out.println(redirectMsg);
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+ response.setHeader("Location", redirectPath);
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+ response.setStatus(HttpServletResponse.SC_TEMPORARY_REDIRECT);
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+ return;
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+ }
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+ super.doFilter(request, response, chain);
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+ }
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+
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+ private String containerLogPageRedirectPath(String uri) {
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+ String redirectPath = null;
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+ if (!uri.contains("/ws/v1/node") && uri.contains("/containerlogs")) {
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+ String[] parts = uri.split("/");
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+ String containerIdStr = parts[3];
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+ String appOwner = parts[4];
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+ if (containerIdStr != null && !containerIdStr.isEmpty()) {
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+ ContainerId containerId = null;
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+ try {
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+ containerId = ContainerId.fromString(containerIdStr);
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+ } catch (IllegalArgumentException ex) {
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+ return redirectPath;
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+ }
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+ ApplicationId appId =
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+ containerId.getApplicationAttemptId().getApplicationId();
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+ Application app = nmContext.getApplications().get(appId);
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+ Configuration nmConf = nmContext.getLocalDirsHandler().getConfig();
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+ if (app == null
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+ && nmConf.getBoolean(YarnConfiguration.LOG_AGGREGATION_ENABLED,
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+ YarnConfiguration.DEFAULT_LOG_AGGREGATION_ENABLED)) {
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+ String logServerUrl =
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+ nmConf.get(YarnConfiguration.YARN_LOG_SERVER_URL);
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+ if (logServerUrl != null && !logServerUrl.isEmpty()) {
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+ StringBuilder sb = new StringBuilder();
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+ sb.append(logServerUrl);
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+ sb.append("/");
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+ sb.append(nmContext.getNodeId().toString());
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+ sb.append("/");
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+ sb.append(containerIdStr);
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+ sb.append("/");
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+ sb.append(containerIdStr);
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+ sb.append("/");
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+ sb.append(appOwner);
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+ redirectPath = sb.toString();
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+ } else {
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+ injector.getInstance(RequestContext.class).set(
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+ ContainerLogsPage.REDIRECT_URL, "false");
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+ }
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+ }
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+ }
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+ }
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+ return redirectPath;
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+ }
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+}
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Jian He