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https://issues.apache.org/jira/browse/FLINK-1579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15897490#comment-15897490
]
ASF GitHub Bot commented on FLINK-1579:
---------------------------------------
Github user uce commented on a diff in the pull request:
https://github.com/apache/flink/pull/3460#discussion_r104408644
--- Diff:
flink-runtime-web/src/main/java/org/apache/flink/runtime/webmonitor/files/AbstractStaticFileServerHandler.java
---
@@ -0,0 +1,350 @@
+/*
+ * 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.files;
+
+/*****************************************************************************
+ * This code is based on the "HttpStaticFileServerHandler" from the
+ * Netty project's HTTP server example.
+ *
+ * See http://netty.io and
+ *
https://github.com/netty/netty/blob/4.0/example/src/main/java/io/netty/example/http/file/HttpStaticFileServerHandler.java
+
*****************************************************************************/
+
+import io.netty.buffer.Unpooled;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelFutureListener;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.DefaultFileRegion;
+import io.netty.channel.SimpleChannelInboundHandler;
+import io.netty.handler.codec.http.DefaultFullHttpResponse;
+import io.netty.handler.codec.http.DefaultHttpResponse;
+import io.netty.handler.codec.http.FullHttpResponse;
+import io.netty.handler.codec.http.HttpChunkedInput;
+import io.netty.handler.codec.http.HttpHeaders;
+import io.netty.handler.codec.http.HttpRequest;
+import io.netty.handler.codec.http.HttpResponse;
+import io.netty.handler.codec.http.HttpResponseStatus;
+import io.netty.handler.codec.http.LastHttpContent;
+import io.netty.handler.codec.http.router.Routed;
+import io.netty.handler.ssl.SslHandler;
+import io.netty.handler.stream.ChunkedFile;
+import io.netty.util.CharsetUtil;
+import org.apache.flink.util.Preconditions;
+import org.slf4j.Logger;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.RandomAccessFile;
+import java.net.URI;
+import java.net.URL;
+import java.nio.file.Files;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.GregorianCalendar;
+import java.util.Locale;
+import java.util.TimeZone;
+
+import static io.netty.handler.codec.http.HttpHeaders.Names.CACHE_CONTROL;
+import static io.netty.handler.codec.http.HttpHeaders.Names.CONNECTION;
+import static io.netty.handler.codec.http.HttpHeaders.Names.CONTENT_TYPE;
+import static io.netty.handler.codec.http.HttpHeaders.Names.DATE;
+import static io.netty.handler.codec.http.HttpHeaders.Names.EXPIRES;
+import static
io.netty.handler.codec.http.HttpHeaders.Names.IF_MODIFIED_SINCE;
+import static io.netty.handler.codec.http.HttpHeaders.Names.LAST_MODIFIED;
+import static
io.netty.handler.codec.http.HttpResponseStatus.INTERNAL_SERVER_ERROR;
+import static io.netty.handler.codec.http.HttpResponseStatus.NOT_FOUND;
+import static io.netty.handler.codec.http.HttpResponseStatus.NOT_MODIFIED;
+import static io.netty.handler.codec.http.HttpResponseStatus.OK;
+import static io.netty.handler.codec.http.HttpVersion.HTTP_1_1;
+
+/**
+ * Simple file server handler that serves requests to web frontend's
static files, such as
+ * HTML, CSS, or JS files.
+ *
+ * <p>This code is based on the "HttpStaticFileServerHandler" from the
Netty project's HTTP server
+ * example.</p>
+ */
+public abstract class AbstractStaticFileServerHandler extends
SimpleChannelInboundHandler<Routed> {
+
+ /** Timezone in which this server answers its "if-modified" requests */
+ private static final TimeZone GMT_TIMEZONE =
TimeZone.getTimeZone("GMT");
+
+ /** Date format for HTTP */
+ public static final String HTTP_DATE_FORMAT = "EEE, dd MMM yyyy
HH:mm:ss zzz";
+
+ /** Be default, we allow files to be cached for 5 minutes */
+ private static final int HTTP_CACHE_SECONDS = 300;
+
+ /** The log for all error reporting */
+ protected final Logger logger;
+
+ /** The path in which the static documents are */
+ private final File rootPath;
+
+ public AbstractStaticFileServerHandler(Logger logger, File rootPath)
throws IOException {
+ this.logger = Preconditions.checkNotNull(logger);
+ this.rootPath =
Preconditions.checkNotNull(rootPath).getCanonicalFile();
+ }
+
+ @Override
+ public void channelRead0(ChannelHandlerContext ctx, Routed routed)
throws Exception {
+ String requestPath = routed.path();
+
+ // make sure we request the "index.html" in case there is a
directory request
+ if (requestPath.endsWith("/")) {
+ requestPath = requestPath + "index.html";
+ }
+
+ requestPath = preProcessRequestPath(requestPath);
+
+ handleRequest(ctx, routed, requestPath);
+ }
+
+ protected void handleRequest(ChannelHandlerContext ctx, Routed routed,
String requestPath) throws Exception {
+ respond(ctx, routed.request(), requestPath);
+ }
+
+ protected void respond(ChannelHandlerContext ctx, HttpRequest request,
String requestPath) throws IOException, ParseException {
--- End diff --
Could rename this to `respondWithFile` or something? With the new
refactorings, it can become unclear what to overwrite etc.
> Create a Flink History Server
> -----------------------------
>
> Key: FLINK-1579
> URL: https://issues.apache.org/jira/browse/FLINK-1579
> Project: Flink
> Issue Type: New Feature
> Components: Distributed Coordination
> Affects Versions: 0.9
> Reporter: Robert Metzger
> Assignee: Chesnay Schepler
>
> Right now its not possible to analyze the job results for jobs that ran on
> YARN, because we'll loose the information once the JobManager has stopped.
> Therefore, I propose to implement a "Flink History Server" which serves the
> results from these jobs.
> I haven't started thinking about the implementation, but I suspect it
> involves some JSON files stored in HDFS :)
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