| /** |
| * 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.nodemanager.webapp; |
| |
| import static org.apache.hadoop.yarn.util.StringHelper.join; |
| import static org.apache.hadoop.yarn.webapp.YarnWebParams.CONTAINER_ID; |
| import static org.apache.hadoop.yarn.webapp.view.JQueryUI.ACCORDION; |
| import static org.apache.hadoop.yarn.webapp.view.JQueryUI.ACCORDION_ID; |
| import static org.apache.hadoop.yarn.webapp.view.JQueryUI.THEMESWITCHER_ID; |
| import static org.apache.hadoop.yarn.webapp.view.JQueryUI.initID; |
| |
| import java.io.File; |
| import java.io.FileReader; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.util.ArrayList; |
| import java.util.EnumSet; |
| import java.util.List; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| 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.api.records.ContainerId; |
| import org.apache.hadoop.yarn.server.nodemanager.Context; |
| import org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService; |
| import org.apache.hadoop.yarn.server.nodemanager.containermanager.application.Application; |
| import org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container; |
| import org.apache.hadoop.yarn.server.nodemanager.containermanager.container.ContainerState; |
| import org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch; |
| import org.apache.hadoop.yarn.server.security.ApplicationACLsManager; |
| import org.apache.hadoop.yarn.util.ConverterUtils; |
| import org.apache.hadoop.yarn.webapp.YarnWebParams; |
| import org.apache.hadoop.yarn.webapp.SubView; |
| import org.apache.hadoop.yarn.webapp.view.HtmlBlock; |
| |
| import com.google.inject.Inject; |
| |
| public class ContainerLogsPage extends NMView { |
| |
| public static final String REDIRECT_URL = "redirect.url"; |
| |
| @Override protected void preHead(Page.HTML<_> html) { |
| String redirectUrl = $(REDIRECT_URL); |
| if (redirectUrl == null || redirectUrl.isEmpty()) { |
| set(TITLE, join("Logs for ", $(CONTAINER_ID))); |
| } else { |
| if (redirectUrl.equals("false")) { |
| set(TITLE, join("Failed redirect for ", $(CONTAINER_ID))); |
| //Error getting redirect url. Fall through. |
| } else { |
| set(TITLE, join("Redirecting to log server for ", $(CONTAINER_ID))); |
| html.meta_http("refresh", "1; url=" + redirectUrl); |
| } |
| } |
| |
| set(ACCORDION_ID, "nav"); |
| set(initID(ACCORDION, "nav"), "{autoHeight:false, active:0}"); |
| set(THEMESWITCHER_ID, "themeswitcher"); |
| } |
| |
| @Override |
| protected Class<? extends SubView> content() { |
| return ContainersLogsBlock.class; |
| } |
| |
| public static class ContainersLogsBlock extends HtmlBlock implements |
| YarnWebParams { |
| private final Configuration conf; |
| private final Context nmContext; |
| private final ApplicationACLsManager aclsManager; |
| private final LocalDirsHandlerService dirsHandler; |
| |
| @Inject |
| public ContainersLogsBlock(Configuration conf, Context context, |
| ApplicationACLsManager aclsManager, |
| LocalDirsHandlerService dirsHandler) { |
| this.conf = conf; |
| this.nmContext = context; |
| this.aclsManager = aclsManager; |
| this.dirsHandler = dirsHandler; |
| } |
| |
| @Override |
| protected void render(Block html) { |
| |
| String redirectUrl = $(REDIRECT_URL); |
| if (redirectUrl !=null && redirectUrl.equals("false")) { |
| html.h1("Failed while trying to construct the redirect url to the log" + |
| " server. Log Server url may not be configured"); |
| //Intentional fallthrough. |
| } |
| |
| ContainerId containerId; |
| try { |
| containerId = ConverterUtils.toContainerId($(CONTAINER_ID)); |
| } catch (IllegalArgumentException e) { |
| html.h1("Invalid containerId " + $(CONTAINER_ID)); |
| return; |
| } |
| |
| ApplicationId applicationId = containerId.getApplicationAttemptId() |
| .getApplicationId(); |
| Application application = this.nmContext.getApplications().get( |
| applicationId); |
| Container container = this.nmContext.getContainers().get(containerId); |
| |
| if (application == null) { |
| html.h1( |
| "Unknown container. Container either has not started or " |
| + "has already completed or " |
| + "doesn't belong to this node at all."); |
| return; |
| } |
| if (container == null) { |
| // Container may have alerady completed, but logs not aggregated yet. |
| printLogs(html, containerId, applicationId, application); |
| return; |
| } |
| |
| if (EnumSet.of(ContainerState.NEW, ContainerState.LOCALIZING, |
| ContainerState.LOCALIZED).contains(container.getContainerState())) { |
| html.h1("Container is not yet running. Current state is " |
| + container.getContainerState()); |
| return; |
| } |
| |
| if (container.getContainerState() == ContainerState.LOCALIZATION_FAILED) { |
| html.h1("Container wasn't started. Localization failed."); |
| return; |
| } |
| |
| if (EnumSet.of(ContainerState.RUNNING, |
| ContainerState.EXITED_WITH_FAILURE, |
| ContainerState.EXITED_WITH_SUCCESS).contains( |
| container.getContainerState())) { |
| printLogs(html, containerId, applicationId, application); |
| return; |
| } |
| if (EnumSet.of(ContainerState.KILLING, |
| ContainerState.CONTAINER_CLEANEDUP_AFTER_KILL, |
| ContainerState.CONTAINER_RESOURCES_CLEANINGUP).contains( |
| container.getContainerState())) { |
| //Container may have generated some logs before being killed. |
| printLogs(html, containerId, applicationId, application); |
| return; |
| } |
| if (container.getContainerState().equals(ContainerState.DONE)) { |
| // Prev state unknown. Logs may be available. |
| printLogs(html, containerId, applicationId, application); |
| return; |
| } else { |
| html.h1("Container is no longer running..."); |
| return; |
| } |
| } |
| |
| private void printLogs(Block html, ContainerId containerId, |
| ApplicationId applicationId, Application application) { |
| // 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, application.getUser(), |
| applicationId)) { |
| html.h1( |
| "User [" + remoteUser |
| + "] is not authorized to view the logs for application " |
| + applicationId); |
| return; |
| } |
| |
| if (!$(CONTAINER_LOG_TYPE).isEmpty()) { |
| File logFile = null; |
| try { |
| logFile = |
| new File(this.dirsHandler.getLogPathToRead( |
| ContainerLaunch.getRelativeContainerLogDir( |
| applicationId.toString(), containerId.toString()) |
| + Path.SEPARATOR + $(CONTAINER_LOG_TYPE)) |
| .toUri().getPath()); |
| } catch (Exception e) { |
| html.h1("Cannot find this log on the local disk."); |
| return; |
| } |
| long start = |
| $("start").isEmpty() ? -4 * 1024 : Long.parseLong($("start")); |
| start = start < 0 ? logFile.length() + start : start; |
| start = start < 0 ? 0 : start; |
| long end = |
| $("end").isEmpty() ? logFile.length() : Long.parseLong($("end")); |
| end = end < 0 ? logFile.length() + end : end; |
| end = end < 0 ? logFile.length() : end; |
| if (start > end) { |
| html.h1("Invalid start and end values. Start: [" + start + "]" |
| + ", end[" + end + "]"); |
| return; |
| } else { |
| InputStreamReader reader = null; |
| try { |
| long toRead = end - start; |
| if (toRead < logFile.length()) { |
| html.p()._("Showing " + toRead + " bytes. Click ") |
| .a(url("containerlogs", $(CONTAINER_ID), $(APP_OWNER), |
| logFile.getName(), "?start=0"), "here"). |
| _(" for full log")._(); |
| } |
| // TODO: Use secure IO Utils to avoid symlink attacks. |
| // TODO Fix findBugs close warning along with IOUtils change |
| reader = new FileReader(logFile); |
| int bufferSize = 65536; |
| char[] cbuf = new char[bufferSize]; |
| |
| long skipped = 0; |
| long totalSkipped = 0; |
| while (totalSkipped < start) { |
| skipped = reader.skip(start - totalSkipped); |
| totalSkipped += skipped; |
| } |
| |
| int len = 0; |
| int currentToRead = toRead > bufferSize ? bufferSize : (int) toRead; |
| writer().write("<pre>"); |
| |
| while ((len = reader.read(cbuf, 0, currentToRead)) > 0 |
| && toRead > 0) { |
| writer().write(cbuf, 0, len); // TODO: HTMl Quoting? |
| toRead = toRead - len; |
| currentToRead = toRead > bufferSize ? bufferSize : (int) toRead; |
| } |
| |
| reader.close(); |
| writer().write("</pre>"); |
| |
| } catch (IOException e) { |
| html.h1("Exception reading log-file. Log file was likely aggregated. " |
| + StringUtils.stringifyException(e)); |
| } finally { |
| if (reader != null) { |
| try { |
| reader.close(); |
| } catch (IOException e) { |
| // Ignore |
| } |
| } |
| } |
| } |
| } else { |
| // Just print out the log-types |
| List<File> containerLogsDirs = getContainerLogDirs(containerId, |
| dirsHandler); |
| boolean foundLogFile = false; |
| for (File containerLogsDir : containerLogsDirs) { |
| for (File logFile : containerLogsDir.listFiles()) { |
| foundLogFile = true; |
| html.p() |
| .a(url("containerlogs", $(CONTAINER_ID), $(APP_OWNER), |
| logFile.getName(), "?start=-4096"), |
| logFile.getName() + " : Total file length is " |
| + logFile.length() + " bytes.")._(); |
| } |
| } |
| if (!foundLogFile) { |
| html.h1("No logs available for container " + containerId.toString()); |
| return; |
| } |
| } |
| return; |
| } |
| |
| static List<File> getContainerLogDirs(ContainerId containerId, |
| LocalDirsHandlerService dirsHandler) { |
| List<String> logDirs = dirsHandler.getLogDirs(); |
| List<File> containerLogDirs = new ArrayList<File>(logDirs.size()); |
| for (String logDir : logDirs) { |
| String appIdStr = |
| ConverterUtils.toString( |
| containerId.getApplicationAttemptId().getApplicationId()); |
| File appLogDir = new File(logDir, appIdStr); |
| String containerIdStr = ConverterUtils.toString(containerId); |
| containerLogDirs.add(new File(appLogDir, containerIdStr)); |
| } |
| return containerLogDirs; |
| } |
| } |
| } |
