/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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 org.apache.hadoop.yarn.server.resourcemanager.webapp;
import static org.apache.hadoop.yarn.server.resourcemanager.webapp.RMWebApp.QUEUE_NAME;
import static org.apache.hadoop.yarn.util.StringHelper.join;
import static org.apache.hadoop.yarn.webapp.YarnWebParams.APPLICATION_ID;
import javax.servlet.http.HttpServletResponse;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.yarn.api.records.ApplicationAccessType;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler;
import org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.AppInfo;
import org.apache.hadoop.yarn.server.security.ApplicationACLsManager;
import org.apache.hadoop.yarn.util.Apps;
import org.apache.hadoop.yarn.util.Times;
import org.apache.hadoop.yarn.webapp.Controller;
import org.apache.hadoop.yarn.webapp.ResponseInfo;
import com.google.inject.Inject;
// Do NOT rename/refactor this to RMView as it will wreak havoc
// on Mac OS HFS as its case-insensitive!
public class RmController extends Controller {
private ApplicationACLsManager aclsManager;
@Inject
RmController(RequestContext ctx, ApplicationACLsManager aclsManager) {
super(ctx);
this.aclsManager = aclsManager;
}
@Override public void index() {
setTitle("Applications");
}
public void about() {
setTitle("About the Cluster");
render(AboutPage.class);
}
public void app() {
String aid = $(APPLICATION_ID);
if (aid.isEmpty()) {
setStatus(HttpServletResponse.SC_BAD_REQUEST);
setTitle("Bad request: requires application ID");
return;
}
ApplicationId appID = Apps.toAppID(aid);
RMContext context = getInstance(RMContext.class);
RMApp rmApp = context.getRMApps().get(appID);
if (rmApp == null) {
// TODO: handle redirect to jobhistory server
setStatus(HttpServletResponse.SC_NOT_FOUND);
setTitle("Application not found: "+ aid);
return;
}
AppInfo app = new AppInfo(rmApp, true);
// Check for the authorization.
String remoteUser = request().getRemoteUser();
UserGroupInformation callerUGI = null;
if (remoteUser != null) {
callerUGI = UserGroupInformation.createRemoteUser(remoteUser);
}
if (callerUGI != null
&& !this.aclsManager.checkAccess(callerUGI,
ApplicationAccessType.VIEW_APP, app.getUser(), appID)) {
setStatus(HttpServletResponse.SC_UNAUTHORIZED);
setTitle("Unauthorized request for viewing application " + appID);
renderText("You (User " + remoteUser
+ ") are not authorized to view the logs for application " + appID);
return;
}
setTitle(join("Application ", aid));
ResponseInfo info = info("Application Overview").
_("User:", app.getUser()).
_("Name:", app.getName()).
_("State:", app.getState()).
_("FinalStatus:", app.getFinalStatus()).
_("Started:", Times.format(app.getStartTime())).
_("Elapsed:", StringUtils.formatTime(
Times.elapsed(app.getStartTime(), app.getFinishTime()))).
_("Tracking URL:", !app.isTrackingUrlReady() ?
"#" : app.getTrackingUrlPretty(), app.getTrackingUI()).
_("Diagnostics:", app.getNote());
if (app.amContainerLogsExist()) {
info._("AM container logs:", app.getAMContainerLogs(), app.getAMContainerLogs());
} else {
info._("AM container logs:", "");
}
render(AppPage.class);
}
public void nodes() {
render(NodesPage.class);
}
public void scheduler() {
ResourceManager rm = getInstance(ResourceManager.class);
ResourceScheduler rs = rm.getResourceScheduler();
if (rs == null || rs instanceof CapacityScheduler) {
setTitle("Capacity Scheduler");
render(CapacitySchedulerPage.class);
return;
}
setTitle("Default Scheduler");
render(DefaultSchedulerPage.class);
}
public void queue() {
setTitle(join("Queue ", get(QUEUE_NAME, "unknown")));
}
public void submit() {
setTitle("Application Submission Not Allowed");
}
public void json() {
renderJSON(AppsList.class);
}
}