[SPARK-7650] [STREAMING] [WEBUI] Move streaming css and js files to the streaming project

cc tdas

Author: zsxwing <zsxwing@gmail.com>

Closes #6160 from zsxwing/SPARK-7650 and squashes the following commits:

fe6ae15 [zsxwing] Fix the import order
a4ffd99 [zsxwing] Merge branch 'master' into SPARK-7650
dc402b6 [zsxwing] Move streaming css and js files to the streaming project

3 files changed, 1 insertions, 344 deletions

diff --git a/core/src/main/resources/org/apache/spark/ui/static/streaming-page.css b/core/src/main/resources/org/apache/spark/ui/static/streaming-page.css
deleted file mode 100644
index 19abe889ad..0000000000
--- a/core/src/main/resources/org/apache/spark/ui/static/streaming-page.css
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * 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.
- */
-
-
-.graph {
-  font: 10px sans-serif;
-}
-
-.axis path, .axis line {
-  fill: none;
-  stroke: gray;
-  shape-rendering: crispEdges;
-}
-
-.axis text {
-  fill: gray;
-}
-
-.tooltip-inner {
-  max-width: 500px !important; // Make sure we only have one line tooltip
-}
-
-.line {
-  fill: none;
-  stroke: #0088cc;
-  stroke-width: 1.5px;
-}
-
-.bar rect {
-  fill: #0088cc;
-  shape-rendering: crispEdges;
-}
-
-.bar rect:hover {
-  fill: #00c2ff;
-}
-
-.timeline {
-  width: 500px;
-}
-
-.histogram {
-  width: auto;
-}
-
-span.expand-input-rate {
-  cursor: pointer;
-}
diff --git a/core/src/main/resources/org/apache/spark/ui/static/streaming-page.js b/core/src/main/resources/org/apache/spark/ui/static/streaming-page.js
deleted file mode 100644
index 0ee6752b29..0000000000
--- a/core/src/main/resources/org/apache/spark/ui/static/streaming-page.js
+++ /dev/null
@@ -1,281 +0,0 @@
-/*
- * 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.
- */
-
-
-// timeFormat: StreamingPage.scala will generate a global "timeFormat" dictionary to store the time
-// and its formatted string. Because we cannot specify a timezone in JavaScript, to make sure the
-// server and client use the same timezone, we use the "timeFormat" dictionary to format all time
-// values used in the graphs.
-
-// A global margin left for all timeline graphs. It will be set in "registerTimeline". This will be
-// used to align all timeline graphs.
-var maxMarginLeftForTimeline = 0;
-
-// The max X values for all histograms. It will be set in "registerHistogram".
-var maxXForHistogram = 0;
-
-var histogramBinCount = 10;
-var yValueFormat = d3.format(",.2f");
-
-// Show a tooltip "text" for "node"
-function showBootstrapTooltip(node, text) {
-    $(node).tooltip({title: text, trigger: "manual", container: "body"});
-    $(node).tooltip("show");
-}
-
-// Hide the tooltip for "node"
-function hideBootstrapTooltip(node) {
-    $(node).tooltip("destroy");
-}
-
-// Register a timeline graph. All timeline graphs should be register before calling any
-// "drawTimeline" so that we can determine the max margin left for all timeline graphs.
-function registerTimeline(minY, maxY) {
-    var numOfChars = yValueFormat(maxY).length;
-    // A least width for "maxY" in the graph
-    var pxForMaxY = numOfChars * 8 + 10;
-    // Make sure we have enough space to show the ticks in the y axis of timeline
-    maxMarginLeftForTimeline = pxForMaxY > maxMarginLeftForTimeline? pxForMaxY : maxMarginLeftForTimeline;
-}
-
-// Register a histogram graph. All histogram graphs should be register before calling any
-// "drawHistogram" so that we can determine the max X value for histograms.
-function registerHistogram(values, minY, maxY) {
-    var data = d3.layout.histogram().range([minY, maxY]).bins(histogramBinCount)(values);
-    // d.x is the y values while d.y is the x values
-    var maxX = d3.max(data, function(d) { return d.y; });
-    maxXForHistogram = maxX > maxXForHistogram ? maxX : maxXForHistogram;
-}
-
-// Draw a line between (x1, y1) and (x2, y2)
-function drawLine(svg, xFunc, yFunc, x1, y1, x2, y2) {
-    var line = d3.svg.line()
-        .x(function(d) { return xFunc(d.x); })
-        .y(function(d) { return yFunc(d.y); });
-    var data = [{x: x1, y: y1}, {x: x2, y: y2}];
-    svg.append("path")
-        .datum(data)
-        .style("stroke-dasharray", ("6, 6"))
-        .style("stroke", "lightblue")
-        .attr("class", "line")
-        .attr("d", line);
-}
-
-/**
- * @param id the `id` used in the html `div` tag
- * @param data the data for the timeline graph
- * @param minX the min value of X axis
- * @param maxX the max value of X axis
- * @param minY the min value of Y axis
- * @param maxY the max value of Y axis
- * @param unitY the unit of Y axis
- * @param batchInterval if "batchInterval" is specified, we will draw a line for "batchInterval" in the graph
- */
-function drawTimeline(id, data, minX, maxX, minY, maxY, unitY, batchInterval) {
-    // Hide the right border of "<td>". We cannot use "css" directly, or "sorttable.js" will override them.
-    d3.select(d3.select(id).node().parentNode)
-        .style("padding", "8px 0 8px 8px")
-        .style("border-right", "0px solid white");
-
-    var margin = {top: 20, right: 27, bottom: 30, left: maxMarginLeftForTimeline};
-    var width = 500 - margin.left - margin.right;
-    var height = 150 - margin.top - margin.bottom;
-
-    var x = d3.scale.linear().domain([minX, maxX]).range([0, width]);
-    var y = d3.scale.linear().domain([minY, maxY]).range([height, 0]);
-
-    var xAxis = d3.svg.axis().scale(x).orient("bottom").tickFormat(function(d) {
-        var formattedDate = timeFormat[d];
-        var dotIndex = formattedDate.indexOf('.');
-        if (dotIndex >= 0) {
-            // Remove milliseconds
-            return formattedDate.substring(0, dotIndex);
-        } else {
-            return formattedDate;
-        }
-    });
-    var formatYValue = d3.format(",.2f");
-    var yAxis = d3.svg.axis().scale(y).orient("left").ticks(5).tickFormat(formatYValue);
-
-    var line = d3.svg.line()
-        .x(function(d) { return x(d.x); })
-        .y(function(d) { return y(d.y); });
-
-    var svg = d3.select(id).append("svg")
-        .attr("width", width + margin.left + margin.right)
-        .attr("height", height + margin.top + margin.bottom)
-        .append("g")
-            .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
-
-    // Only show the first and last time in the graph
-    xAxis.tickValues(x.domain());
-
-    svg.append("g")
-        .attr("class", "x axis")
-        .attr("transform", "translate(0," + height + ")")
-        .call(xAxis)
-
-    svg.append("g")
-        .attr("class", "y axis")
-        .call(yAxis)
-        .append("text")
-            .attr("transform", "translate(0," + (-3) + ")")
-            .text(unitY);
-
-
-    if (batchInterval && batchInterval <= maxY) {
-        drawLine(svg, x, y, minX, batchInterval, maxX, batchInterval);
-    }
-
-    svg.append("path")
-        .datum(data)
-        .attr("class", "line")
-        .attr("d", line);
-
-    // Add points to the line. However, we make it invisible at first. But when the user moves mouse
-    // over a point, it will be displayed with its detail.
-    svg.selectAll(".point")
-        .data(data)
-        .enter().append("circle")
-            .attr("stroke", "white") // white and opacity = 0 make it invisible
-            .attr("fill", "white")
-            .attr("opacity", "0")
-            .attr("cx", function(d) { return x(d.x); })
-            .attr("cy", function(d) { return y(d.y); })
-            .attr("r", function(d) { return 3; })
-            .on('mouseover', function(d) {
-                var tip = formatYValue(d.y) + " " + unitY + " at " + timeFormat[d.x];
-                showBootstrapTooltip(d3.select(this).node(), tip);
-                // show the point
-                d3.select(this)
-                    .attr("stroke", "steelblue")
-                    .attr("fill", "steelblue")
-                    .attr("opacity", "1");
-            })
-            .on('mouseout',  function() {
-                hideBootstrapTooltip(d3.select(this).node());
-                // hide the point
-                d3.select(this)
-                    .attr("stroke", "white")
-                    .attr("fill", "white")
-                    .attr("opacity", "0");
-            })
-            .on("click", function(d) {
-                window.location.href = "batch/?id=" + d.x;
-            });
-}
-
-/**
- * @param id the `id` used in the html `div` tag
- * @param values the data for the histogram graph
- * @param minY the min value of Y axis
- * @param maxY the max value of Y axis
- * @param unitY the unit of Y axis
- * @param batchInterval if "batchInterval" is specified, we will draw a line for "batchInterval" in the graph
- */
-function drawHistogram(id, values, minY, maxY, unitY, batchInterval) {
-    // Hide the left border of "<td>". We cannot use "css" directly, or "sorttable.js" will override them.
-    d3.select(d3.select(id).node().parentNode)
-        .style("padding", "8px 8px 8px 0")
-        .style("border-left", "0px solid white");
-
-    var margin = {top: 20, right: 30, bottom: 30, left: 10};
-    var width = 300 - margin.left - margin.right;
-    var height = 150 - margin.top - margin.bottom;
-
-    var x = d3.scale.linear().domain([0, maxXForHistogram]).range([0, width]);
-    var y = d3.scale.linear().domain([minY, maxY]).range([height, 0]);
-
-    var xAxis = d3.svg.axis().scale(x).orient("top").ticks(5);
-    var yAxis = d3.svg.axis().scale(y).orient("left").ticks(0).tickFormat(function(d) { return ""; });
-
-    var data = d3.layout.histogram().range([minY, maxY]).bins(histogramBinCount)(values);
-
-    var svg = d3.select(id).append("svg")
-        .attr("width", width + margin.left + margin.right)
-        .attr("height", height + margin.top + margin.bottom)
-        .append("g")
-            .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
-
-    if (batchInterval && batchInterval <= maxY) {
-        drawLine(svg, x, y, 0, batchInterval, maxXForHistogram, batchInterval);
-    }
-
-    svg.append("g")
-        .attr("class", "x axis")
-        .call(xAxis)
-
-    svg.append("g")
-        .attr("class", "y axis")
-        .call(yAxis)
-
-    var bar = svg.selectAll(".bar")
-        .data(data)
-        .enter()
-        .append("g")
-            .attr("transform", function(d) { return "translate(0," + (y(d.x) - height + y(d.dx))  + ")";})
-            .attr("class", "bar").append("rect")
-            .attr("width", function(d) { return x(d.y); })
-            .attr("height", function(d) { return height - y(d.dx); })
-            .on('mouseover', function(d) {
-                var percent = yValueFormat(d.y * 100.0 / values.length) + "%";
-                var tip = d.y + " batches (" + percent + ") between " + yValueFormat(d.x) + " and " + yValueFormat(d.x + d.dx) + " " + unitY;
-                showBootstrapTooltip(d3.select(this).node(), tip);
-            })
-            .on('mouseout',  function() {
-                hideBootstrapTooltip(d3.select(this).node());
-            });
-
-    if (batchInterval && batchInterval <= maxY) {
-        // Add the "stable" text to the graph below the batch interval line.
-        var stableXOffset = x(maxXForHistogram) - 20;
-        var stableYOffset = y(batchInterval) + 15;
-        svg.append("text")
-            .style("fill", "lightblue")
-            .attr("class", "stable-text")
-            .attr("text-anchor", "middle")
-            .attr("transform", "translate(" + stableXOffset + "," + stableYOffset + ")")
-            .text("stable")
-            .on('mouseover', function(d) {
-              var tip = "Processing Time <= Batch Interval (" + yValueFormat(batchInterval) +" " + unitY +")";
-              showBootstrapTooltip(d3.select(this).node(), tip);
-            })
-            .on('mouseout',  function() {
-              hideBootstrapTooltip(d3.select(this).node());
-            });
-    }
-}
-
-$(function() {
-    var status = window.localStorage && window.localStorage.getItem("show-streams-detail") == "true";
-
-    $("span.expand-input-rate").click(function() {
-        status = !status;
-        $("#inputs-table").toggle('collapsed');
-        // Toggle the class of the arrow between open and closed
-        $(this).find('.expand-input-rate-arrow').toggleClass('arrow-open').toggleClass('arrow-closed');
-        if (window.localStorage) {
-            window.localStorage.setItem("show-streams-detail", "" + status);
-        }
-    });
-
-    if (status) {
-        $("#inputs-table").toggle('collapsed');
-        // Toggle the class of the arrow between open and closed
-        $(this).find('.expand-input-rate-arrow').toggleClass('arrow-open').toggleClass('arrow-closed');
-    }
-});
diff --git a/core/src/main/scala/org/apache/spark/ui/WebUI.scala b/core/src/main/scala/org/apache/spark/ui/WebUI.scala
index 384f2ad26e..1df9cd0fa1 100644
--- a/core/src/main/scala/org/apache/spark/ui/WebUI.scala
+++ b/core/src/main/scala/org/apache/spark/ui/WebUI.scala
@@ -94,7 +94,7 @@ private[spark] abstract class WebUI(
   }
 
   /** Detach a handler from this UI. */
-  protected def detachHandler(handler: ServletContextHandler) {
+  def detachHandler(handler: ServletContextHandler) {
     handlers -= handler
     serverInfo.foreach { info =>
       info.rootHandler.removeHandler(handler)