spark StreamingTab 源码
spark StreamingTab 代码
文件路径：/streaming/src/main/scala/org/apache/spark/streaming/ui/StreamingTab.scala
/*
* 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.spark.streaming.ui
import org.apache.spark.internal.Logging
import org.apache.spark.streaming.StreamingContext
import org.apache.spark.ui.{SparkUI, SparkUITab}
/**
* Spark Web UI tab that shows statistics of a streaming job.
* This assumes the given SparkContext has enabled its SparkUI.
*/
private[spark] class StreamingTab(val ssc: StreamingContext, sparkUI: SparkUI)
extends SparkUITab(sparkUI, "streaming") with Logging {
private val STATIC_RESOURCE_DIR = "org/apache/spark/ui/static"
val parent = sparkUI
val listener = ssc.progressListener
attachPage(new StreamingPage(this))
attachPage(new BatchPage(this))
def attach(): Unit = {
parent.attachTab(this)
parent.addStaticHandler(STATIC_RESOURCE_DIR, "/static/streaming")
}
def detach(): Unit = {
parent.detachTab(this)
parent.detachHandler("/static/streaming")
}
}
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