Github user uce commented on a diff in the pull request:
https://github.com/apache/flink/pull/3460#discussion_r106900609
--- Diff:
flink-runtime-web/src/main/java/org/apache/flink/runtime/webmonitor/history/HistoryServer.java
---
@@ -0,0 +1,293 @@
+/*
+ * 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.flink.runtime.webmonitor.history;
+
+import io.netty.handler.codec.http.router.Router;
+import org.apache.flink.api.java.utils.ParameterTool;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.configuration.GlobalConfiguration;
+import org.apache.flink.configuration.HistoryServerOptions;
+import org.apache.flink.core.fs.FileSystem;
+import org.apache.flink.core.fs.Path;
+import org.apache.flink.runtime.history.FsJobArchivist;
+import org.apache.flink.runtime.net.SSLUtils;
+import org.apache.flink.runtime.security.SecurityUtils;
+import org.apache.flink.runtime.webmonitor.handlers.DashboardConfigHandler;
+import org.apache.flink.runtime.webmonitor.utils.WebFrontendBootstrap;
+import org.apache.flink.util.FileUtils;
+import org.apache.flink.util.FlinkException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.net.ssl.SSLContext;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.lang.reflect.UndeclaredThrowableException;
+import java.nio.file.Files;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+import java.util.concurrent.Callable;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+/**
+ * The HistoryServer provides a WebInterface and REST API to retrieve
information about finished jobs for which
+ * the JobManager may have already shut down.
+ *
+ * The HistoryServer regularly checks a set of directories for job
archives created by the {@link FsJobArchivist} and
+ * caches these in a local directory. See {@link
HistoryServerArchiveFetcher}.
+ *
+ * All configuration options are defined in{@link HistoryServerOptions}.
+ *
+ * The WebInterface only displays the "Completed Jobs" page.
+ *
+ * The REST API is limited to
+ * <ul>
+ * <li>/config</li>
+ * <li>/joboverview</li>
+ * <li>/jobs/:jobid/*</li>
+ * </ul>
+ * and relies on static files that are served by the {@link
HistoryServerStaticFileServerHandler}.
+ */
+public class HistoryServer {
+
+ private static final Logger LOG =
LoggerFactory.getLogger(HistoryServer.class);
+
+ private final String webAddress;
+ private final int webPort;
+ private final long webRefreshIntervalMillis;
+ private final File webDir;
+
+ private final HistoryServerArchiveFetcher archiveFetcher;
+
+ private final SSLContext serverSSLContext;
+ private WebFrontendBootstrap netty;
+
+ private final Object startupShutdownLock = new Object();
+ private final AtomicBoolean shutdownRequested = new
AtomicBoolean(false);
+ private final Thread shutdownHook;
+
+ public static void main(String[] args) throws Exception {
+ ParameterTool pt = ParameterTool.fromArgs(args);
+ String configDir = pt.getRequired("configDir");
+
+ LOG.info("Loading configuration from {}", configDir);
+ final Configuration flinkConfig =
GlobalConfiguration.loadConfiguration(configDir);
+
+ // run the history server
+ SecurityUtils.install(new
SecurityUtils.SecurityConfiguration(flinkConfig));
+
+ try {
+ SecurityUtils.getInstalledContext().runSecured(new
Callable<Integer>() {
+ @Override
+ public Integer call() throws Exception {
+ HistoryServer hs = new
HistoryServer(flinkConfig);
+ hs.run();
+ return 0;
+ }
+ });
+ System.exit(0);
+ } catch (UndeclaredThrowableException ute) {
+ Throwable cause = ute. getUndeclaredThrowable();
+ LOG.error("Failed to run HistoryServer.", cause);
+ cause.printStackTrace();
+ System.exit(1);
+ } catch (Exception e) {
+ LOG.error("Failed to run HistoryServer.", e);
+ e.printStackTrace();
+ System.exit(1);
+ }
+ }
+
+ public HistoryServer(Configuration config) throws IOException,
FlinkException {
+ if
(config.getBoolean(HistoryServerOptions.HISTORY_SERVER_WEB_SSL_ENABLED) &&
SSLUtils.getSSLEnabled(config)) {
+ LOG.info("Enabling ssl for the history server.");
--- End diff --
ssl => `SSL`
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