FELIX-3128 : A Service Diagnostics service and graphical WebConsole plugin
git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1203551 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/webconsole-plugins/servicediagnostics/NOTICE.txt b/webconsole-plugins/servicediagnostics/NOTICE.txt
new file mode 100644
index 0000000..3336daa
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/NOTICE.txt
@@ -0,0 +1,9 @@
+This project is using third party javascript library, under core/src/main/resources/html/js
+- graffle.js
+- graph.js
+- jquery.js
+- raphael-min.js
+
+In my understanding, these are all MIT licences.
+
+This project also uses org.json, and the scala programming language. (Both need to be wrapped into OSGi bundles, see README file)
diff --git a/webconsole-plugins/servicediagnostics/README.txt b/webconsole-plugins/servicediagnostics/README.txt
new file mode 100644
index 0000000..175a3c9
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/README.txt
@@ -0,0 +1,64 @@
+OSGi Service Diagnostics and WebConsole Plugin
+==============================================
+
+This projects aims at easing diagnostics of OSGi services and finding about missing dependencies.
+
+Typically in a large system with many cascading dependencies managed by different trackers such as DeclarativeService, DependencyManager or others, tracking the root cause of a top level service not being started can become very cumbersome. When building service oriented architectures, it is often the case that a single missing requirement will lock a full stack of services, but to find that one requirement is like finding a needle in a haystack!
+
+The basic idea here is to ask each dependency manager instance about its unresolved dependencies, merge all answers and filter the result to keep only the root causes.
+
+Typically, if A depends on B which depends on C which depends on D, and D is nowhere to be found, I need only show the "C -> D" missing requirement; if D is resolved, then the whole stack is unlocked.
+
+Similarly, if D is known by another dependency management system, but unregistered because it depends on E which is missing, then only the "D -> E" requirement is relevant.
+
+Project organization (core):
+============================
+* servicediagnostics: the API package. It holds the main service interface as well as the plugin interface, to extend to other dependency management systems
+
+* servicediagnostics.impl: the implementation package. It contains plugins implementations for org.apache.felix.scr and org.apache.felix.dependencymanager, as well as the main service implementation.
+
+* servicediagnostics.webconsole: a Felix WebConsole plugin that displays a graphical view of the diagnostics result. Alternatively it can also show a graph of all services currently registered in the service registry and the bundles using them. See Screenshot-notavail.png and Screenshot-all.png.
+
+The "sample" part simply contains some test classes and a helper class to launch Felix.
+
+How to build the project:
+=========================
+
+> mvn install
+
+How to run:
+===========
+I'm providing a simple run script just to try out the service.
+Unfortunately, org.json and scala-library don't come readily packaged as OSGi bundles, so we need to wrap them ourselves and copy these runtime dependencies into a "lib" directory under the project root:
+lib/json-osgi.jar
+lib/scala-library-osgi.jar
+
+These libraries can be easily created using Bnd:
+> java -jar bnd.jar wrap $HOME/.m2/repository/org/scala-lang/scala-library/2.8.1/scala-library-2.8.1.jar
+> mv scala-library-2.8.1.bar lib/scala-library-osgi.jar
+
+> java -jar bnd.jar wrap $HOME/.m2/repository/org/json/json/20090211/json-20090211.jar
+> mv json-20090211.bar lib/json-osgi.jar
+
+Once this is done, you can simply run:
+> ./run.sh
+
+It should display:
+[INFO] Started jetty 6.1.x at port(s) HTTP:8080
+
+You can then point your browser to
+http://localhost:8080/system/console/servicegraph
+
+(login/password is admin/admin)
+then click on either "Unavail" or "All".
+The "bubbles" can be dragged around for better readability. The colors are random and don't mean anything.
+On the "All" view, arrows point from bundles to the services they use.
+On the "Unavail" view, arrows point from a leaf component to its missing dependencies.
+
+(note: the lib directory is provided for dependencies that are not readily available as OSGi bundles from maven)
+
+Issues & TODOs:
+===============
+* use of JSONObject in Servlet.scala is a bit awkward, but Scala's native json is still incomplete..
+* no support for service properties; needs to be added.
+* no support for iPojo, Blueprint, basic ServiceTrackers... more plugins could be developed. I only wrote the ones i'm using.
diff --git a/webconsole-plugins/servicediagnostics/core/pom.xml b/webconsole-plugins/servicediagnostics/core/pom.xml
new file mode 100644
index 0000000..c72e3f2
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/core/pom.xml
@@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+ <modelVersion>4.0.0</modelVersion>
+ <parent>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>servicediagnostics</artifactId>
+ <version>1.0.0-SNAPSHOT</version>
+ <relativePath>../pom.xml</relativePath>
+ </parent>
+
+ <groupId>org.apache.felix</groupId>
+ <artifactId>servicediagnostics.core</artifactId>
+ <version>1.0.0-SNAPSHOT</version>
+ <packaging>bundle</packaging>
+
+ <dependencies>
+ <dependency>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>org.apache.felix.webconsole</artifactId>
+ <version>3.1.8</version>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>javax.servlet</artifactId>
+ <version>1.0.0</version>
+ </dependency>
+ <dependency>
+ <groupId>org.json</groupId>
+ <artifactId>json</artifactId>
+ <version>20090211</version>
+ </dependency>
+ </dependencies>
+
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>maven-bundle-plugin</artifactId>
+ <configuration>
+ <instructions>
+ <Bundle-Category>osgi</Bundle-Category>
+ <Bundle-SymbolicName>
+ ${project.artifactId}
+ </Bundle-SymbolicName>
+ <Bundle-Activator>
+ org.apache.felix.servicediagnostics.impl.Activator
+ </Bundle-Activator>
+ <Export-Package>
+ org.apache.felix.servicediagnostics;version=1.0
+ </Export-Package>
+ <Private-Package>
+ org.apache.felix.servicediagnostics.impl,
+ org.apache.felix.servicediagnostics.webconsole
+ </Private-Package>
+ <Include-Resource>
+ src/main/resources
+ </Include-Resource>
+ </instructions>
+ </configuration>
+ </plugin>
+ </plugins>
+ </build>
+
+</project>
diff --git a/webconsole-plugins/servicediagnostics/core/src/main/resources/html/index.html b/webconsole-plugins/servicediagnostics/core/src/main/resources/html/index.html
new file mode 100644
index 0000000..02838d7
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/core/src/main/resources/html/index.html
@@ -0,0 +1,147 @@
+<!--
+/*
+ * 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.
+ */
+-->
+<header>
+ <script type="text/javascript" src="/servicegraph/js/raphael-min.js"></script>
+ <script type="text/javascript" src="/servicegraph/js/graffle.js"></script>
+ <script type="text/javascript" src="/servicegraph/js/graph.js"></script>
+ <script type="text/javascript" src="/servicegraph/js/jquery.js"></script>
+ <script type="text/javascript">
+<!--
+
+var _redraw;
+var height = 600;
+var width = 1000;
+
+DEBUG = false;
+debug = function (obj) { if(DEBUG && console) console.debug(obj); }
+
+var services;
+
+// from graph demo @ http://blog.ameisenbar.de/en/2010/03/02/dracula/
+function graphUnavail(json) {
+ var g = new Graph();
+
+ var empty = true;
+ for (s in json) {
+ empty = false;
+ for (i = 0; i < json[s].length; i++) {
+ // point unregistered service to dependency name
+ g.addEdge(s, json[s][i], { directed : true } );
+ }
+ }
+
+ if (empty) {
+ $("#canvas").empty().append($("<h1>").html("Service Registry status OK: No unresolved service found."));
+ }
+ else showGraph(g)
+}
+
+function graphAllServices(json) {
+ var g = new Graph();
+
+ var empty = true;
+ for (s in json) {
+ empty = false;
+ for (i = 0; i < json[s].length; i++) {
+ // point using bundle to service name
+ g.addEdge(json[s][i], s, { directed : true } );
+ }
+ }
+
+ if (empty) {
+ $("#canvas").empty().append($("<h1>").html("Service Registry empty: no service found."));
+ }
+ else showGraph(g)
+}
+
+function showGraph(g) {
+ debug(g);
+
+ /* layout the graph using the Spring layout implementation */
+ var layouter = new Graph.Layout.Spring(g);
+ layouter.layout();
+
+ /* draw the graph using the RaphaelJS draw implementation */
+ $("#canvas").empty();
+ var renderer = new Graph.Renderer.Raphael('canvas', g, width, height);
+ renderer.draw();
+
+ _redraw = function() {
+ layouter.layout();
+ renderer.draw();
+ };
+}
+
+function redraw() {
+ var filter = $("#filter").val();
+ if (filter) {
+ var grep = {};
+ for (s in services) if (s.indexOf(filter) >= 0) grep[s] = services[s];
+ graphAllServices(grep);
+ } else {
+ graphAllServices(services);
+ }
+}
+
+function loadUnavail() {
+ $("#canvas").html("Loading data. Please wait...");
+ $.ajax({
+ url: "/servicegraph/json/notavail",
+ dataType: "json",
+ success: function(json){
+ services = json;
+ debug("Got services");
+ debug(json);
+ graphUnavail(json);
+ }
+ });
+}
+
+function loadAllServices() {
+ $("#canvas").html("Loading data. Please wait...");
+ $.ajax({
+ url: "/servicegraph/json/all",
+ dataType: "json",
+ success: function(json){
+ services = json;
+ debug("Got services");
+ debug(json);
+ graphAllServices(json);
+ }
+ });
+}
+
+/* only do all this when document has finished loading (needed for RaphaelJS) */
+$(document).ready(function(){
+ $("#actions")
+ .append($("<a>").attr("href", "javascript:loadAllServices()").html("All"))
+ .append($("<span>").html("|"))
+ .append($("<a>").attr("href", "javascript:loadUnavail()").html("Unavail"))
+});
+
+-->
+ </script>
+</header>
+<body>
+Filter: <input type="text" id="filter"/><button id="redraw" onclick="redraw();">redraw</button>
+ <span id="actions"></span>
+<div id="canvas"></div>
+</body>
diff --git a/webconsole-plugins/servicediagnostics/core/src/main/resources/html/js/graffle.js b/webconsole-plugins/servicediagnostics/core/src/main/resources/html/js/graffle.js
new file mode 100644
index 0000000..c0ad9eb
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/core/src/main/resources/html/js/graffle.js
@@ -0,0 +1,101 @@
+/**
+ * Originally grabbed from the official RaphaelJS Documentation
+ * http://raphaeljs.com/graffle.html
+ * Changes and comments by Philipp Strathausen http://blog.ameisenbar.de
+ * Licenced under the MIT licence.
+ */
+
+/**
+ * Usage:
+ * connect two shapes
+ * parameters:
+ * source shape [or connection for redrawing],
+ * target shape,
+ * style with { fg : linecolor, bg : background color, directed: boolean }
+ * returns:
+ * connection { draw = function() }
+ */
+Raphael.fn.connection = function (obj1, obj2, style) {
+ var selfRef = this;
+ /* create and return new connection */
+ var color = style.fg || "#000";
+ var edge = {/*
+ from : obj1,
+ to : obj2,
+ style : style,*/
+ draw : function() {
+ /* get bounding boxes of target and source */
+ var bb1 = obj1.getBBox();
+ var bb2 = obj2.getBBox();
+ bb1.height = bb1.height + 15; /* respect the label TODO do it in a cleaner way */
+ bb2.height = bb2.height + 15;
+ var off1 = 1;
+ var off2 = 2;
+ /* coordinates for potential connection coordinates from/to the objects */
+ var p = [
+ {x: bb1.x + bb1.width / 2, y: bb1.y - off1}, /* NORTH 1 */
+ {x: bb1.x + bb1.width / 2, y: bb1.y + bb1.height + off1}, /* SOUTH 1 */
+ {x: bb1.x - off1, y: bb1.y + bb1.height / 2}, /* WEST 1 */
+ {x: bb1.x + bb1.width + off1, y: bb1.y + bb1.height / 2}, /* EAST 1 */
+ {x: bb2.x + bb2.width / 2, y: bb2.y - off2}, /* NORTH 2 */
+ {x: bb2.x + bb2.width / 2, y: bb2.y + bb2.height + off2}, /* SOUTH 2 */
+ {x: bb2.x - off2, y: bb2.y + bb2.height / 2}, /* WEST 2 */
+ {x: bb2.x + bb2.width + off2, y: bb2.y + bb2.height / 2} /* EAST 2 */
+ ];
+
+ /* distances between objects and according coordinates connection */
+ var d = {}, dis = [];
+
+ /*
+ * find out the best connection coordinates by trying all possible ways
+ */
+ /* loop the first object's connection coordinates */
+ for (var i = 0; i < 4; i++) {
+ /* loop the seond object's connection coordinates */
+ for (var j = 4; j < 8; j++) {
+ var dx = Math.abs(p[i].x - p[j].x),
+ dy = Math.abs(p[i].y - p[j].y);
+ if ((i == j - 4) || (((i != 3 && j != 6) || p[i].x < p[j].x) && ((i != 2 && j != 7) || p[i].x > p[j].x) && ((i != 0 && j != 5) || p[i].y > p[j].y) && ((i != 1 && j != 4) || p[i].y < p[j].y))) {
+ dis.push(dx + dy);
+ d[dis[dis.length - 1]] = [i, j];
+ }
+ }
+ }
+ var res = dis.length == 0 ? res = [0, 4] : d[Math.min.apply(Math, dis)];
+ /* bezier path */
+ var x1 = p[res[0]].x,
+ y1 = p[res[0]].y,
+ x4 = p[res[1]].x,
+ y4 = p[res[1]].y,
+ dx = Math.max(Math.abs(x1 - x4) / 2, 10),
+ dy = Math.max(Math.abs(y1 - y4) / 2, 10),
+ x2 = [x1, x1, x1 - dx, x1 + dx][res[0]].toFixed(3),
+ y2 = [y1 - dy, y1 + dy, y1, y1][res[0]].toFixed(3),
+ x3 = [0, 0, 0, 0, x4, x4, x4 - dx, x4 + dx][res[1]].toFixed(3),
+ y3 = [0, 0, 0, 0, y1 + dy, y1 - dy, y4, y4][res[1]].toFixed(3);
+ /* assemble path and arrow */
+ var path = ["M", x1.toFixed(3), y1.toFixed(3), "C", x2, y2, x3, y3, x4.toFixed(3), y4.toFixed(3)].join(",");
+ /* arrow */
+ if(style && style.directed) {
+ /* magnitude, length of the last path vector */
+ var mag = Math.sqrt((y4 - y3) * (y4 - y3) + (x4 - x3) * (x4 - x3));
+ /* vector normalisation to specified length */
+ var norm = function(x,l){return (-x*(l||5)/mag);};
+ /* calculate array coordinates (two lines orthogonal to the path vector) */
+ var arr = [
+ {x:(norm(x4-x3)+norm(y4-y3)+x4).toFixed(3), y:(norm(y4-y3)+norm(x4-x3)+y4).toFixed(3)},
+ {x:(norm(x4-x3)-norm(y4-y3)+x4).toFixed(3), y:(norm(y4-y3)-norm(x4-x3)+y4).toFixed(3)}
+ ];
+ path = path + ",M"+arr[0].x+","+arr[0].y+",L"+x4+","+y4+",L"+arr[1].x+","+arr[1].y;
+ }
+
+ // applying path
+ edge.fg && edge.fg.attr({path:path})
+ || (edge.fg = selfRef.path(path).attr({stroke: color, fill: "none"}).toBack());
+ edge.bg && edge.bg.attr({path:path})
+ || style && style.bg && (edge.bg = style.bg.split && selfRef.path(path).attr({stroke: style.bg.split("|")[0], fill: "none", "stroke-width": style.bg.split("|")[1] || 3}).toBack());
+ }
+ }
+ edge.draw();
+ return edge;
+};
diff --git a/webconsole-plugins/servicediagnostics/core/src/main/resources/html/js/graph.js b/webconsole-plugins/servicediagnostics/core/src/main/resources/html/js/graph.js
new file mode 100644
index 0000000..268c283
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/core/src/main/resources/html/js/graph.js
@@ -0,0 +1,303 @@
+/* Graph JavaScript framework, version 0.0.1
+ * (c) 2006 Aslak Hellesoy <aslak.hellesoy@gmail.com>
+ * (c) 2006 Dave Hoover <dave.hoover@gmail.com>
+ *
+ * Ported from Graph::Layouter::Spring in
+ * http://search.cpan.org/~pasky/Graph-Layderer-0.02/
+ * The algorithm is based on a spring-style layouter of a Java-based social
+ * network tracker PieSpy written by Paul Mutton E<lt>paul@jibble.orgE<gt>.
+ *
+ * Adopted by Philipp Strathausen <strathausen@gmail.com> to support Raphael JS
+ * for rendering, dragging and much more. See http://blog.ameisenbar.de
+ *
+ * Graph is freely distributable under the terms of an MIT-style license.
+ * For details, see the Graph web site: http://dev.buildpatternd.com/trac
+ *
+ * Links:
+ *
+ * Demo of the original applet:
+ * http://redsquirrel.com/dave/work/webdep/
+ *
+ * Mirrored original source code at snipplr:
+ * http://snipplr.com/view/1950/graph-javascript-framework-version-001/
+ *
+ * Original usage example:
+ * http://ajaxian.com/archives/new-javascriptcanvas-graph-library
+ *
+/*--------------------------------------------------------------------------*/
+
+/*
+ * Graph
+ */
+var Graph = function() {
+ this.nodes = [];
+ this.edges = [];
+};
+Graph.prototype = {
+ addNode: function(id, content) {
+ /* testing if node is already existing in the graph */
+ var new_node = this.nodes[id];
+ if(new_node == undefined) {
+ new_node = new Graph.Node(id, content||{"id":id});
+ this.nodes[id] = new_node;
+ this.nodes.push(new_node); // TODO get rid of the array
+ }
+ return new_node;
+ },
+
+ addEdge: function(source, target, style) {
+ var s = this.addNode(source);
+ var t = this.addNode(target);
+ var color;
+ var colorbg;
+ var directed;
+ if(style) { color = style.color; colorbg = style.colorbg; directed = style.directed }
+ var edge = { source: s, target: t, color: color, colorbg: colorbg, directed: directed };
+ this.edges.push(edge);
+ }
+};
+
+/*
+ * Node
+ */
+Graph.Node = function(id, value){
+ this.id = id;
+ this.content = value;
+};
+Graph.Node.prototype = {
+};
+Graph.Renderer = {};
+Graph.Renderer.Raphael = function(element, graph, width, height) {
+ this.width = width||400;
+ this.height = height||400;
+ var selfRef = this;
+ this.r = Raphael(element, this.width, this.height);
+ this.radius = 40; /* max dimension of a node */
+ this.graph = graph;
+ this.mouse_in = false;
+
+ /*
+ * Dragging
+ */
+ this.isDrag = false;
+ this.dragger = function (e) {
+ this.dx = e.clientX;
+ this.dy = e.clientY;
+ selfRef.isDrag = this;
+ this.animate({"fill-opacity": .2}, 500);
+ e.preventDefault && e.preventDefault();
+ };
+
+ document.onmousemove = function (e) {
+ e = e || window.event;
+ if (selfRef.isDrag) {
+ var newX = e.clientX - selfRef.isDrag.dx + (selfRef.isDrag.attrs.cx == null ? (selfRef.isDrag.attrs.x + selfRef.isDrag.attrs.width / 2) : selfRef.isDrag.attrs.cx);
+ var newY = e.clientY - selfRef.isDrag.dy + (selfRef.isDrag.attrs.cy == null ? (selfRef.isDrag.attrs.y + selfRef.isDrag.attrs.height / 2) : selfRef.isDrag.attrs.cy);
+ /* prevent shapes from being dragged out of the canvas */
+ var clientX = e.clientX - (newX < 20 ? newX - 20 : newX > selfRef.width - 20 ? newX - selfRef.width + 20 : 0);
+ var clientY = e.clientY - (newY < 20 ? newY - 20 : newY > selfRef.height - 20 ? newY - selfRef.height + 20 : 0);
+ selfRef.isDrag.translate(clientX - selfRef.isDrag.dx, clientY - selfRef.isDrag.dy);
+ selfRef.isDrag.label.translate(clientX - selfRef.isDrag.dx, clientY - selfRef.isDrag.dy);
+ for (var i in selfRef.graph.edges) {
+ selfRef.graph.edges[i].connection.draw();
+ }
+ //selfRef.r.safari();
+ selfRef.isDrag.dx = clientX;
+ selfRef.isDrag.dy = clientY;
+ }
+ };
+ document.onmouseup = function () {
+ selfRef.isDrag && selfRef.isDrag.animate({"fill-opacity": 0}, 500);
+ selfRef.isDrag = false;
+ };
+};
+
+/*
+ * Renderer using RaphaelJS
+ */
+Graph.Renderer.Raphael.prototype = {
+ translate: function(point) {
+ return [
+ (point[0] - this.graph.layoutMinX) * this.factorX + this.radius,
+ (point[1] - this.graph.layoutMinY) * this.factorY + this.radius
+ ];
+ },
+
+ rotate: function(point, length, angle) {
+ var dx = length * Math.cos(angle);
+ var dy = length * Math.sin(angle);
+ return [point[0]+dx, point[1]+dy];
+ },
+
+ draw: function() {
+ this.factorX = (width - 2 * this.radius) / (this.graph.layoutMaxX - this.graph.layoutMinX);
+ this.factorY = (height - 2 * this.radius) / (this.graph.layoutMaxY - this.graph.layoutMinY);
+ for (var i = 0; i < this.graph.nodes.length; i++) {
+ this.drawNode(this.graph.nodes[i]);
+ }
+ for (var i = 0; i < this.graph.edges.length; i++) {
+ this.drawEdge(this.graph.edges[i]);
+ }
+ },
+ drawNode: function(node) {
+ var point = this.translate([node.layoutPosX, node.layoutPosY]);
+ node.point = point;
+
+ /* if node has already been drawn, move the nodes */
+ if(node.shape) {
+// console.log(node.shape.attrs );
+ var opoint = [ node.shape.attrs.cx || node.shape.attrs.x + node.shape.attrs.width / 2 , node.shape.attrs.cy || node.shape.attrs.y + node.shape.attrs.height / 2 + 15 ];
+ node.shape.translate(point[0]-opoint[0], point[1]-opoint[1]);
+ node.shape.label.translate(point[0]-opoint[0], point[1]-opoint[1]);
+ this.r.safari();
+ return;
+ }
+ var shape;
+ if(node.content.getShape) {
+ shape = node.content.getShape(this.r, point[0], point[1]);
+ shape.attr({"fill-opacity": 0});
+ } else {
+ shape = this.r.ellipse(point[0], point[1], 30, 20);
+ var color = Raphael.getColor();
+ shape.attr({fill: color, stroke: color, "fill-opacity": 0, "stroke-width": 2})
+ }
+ shape.mousedown(this.dragger);
+ shape.node.style.cursor = "move";
+ shape.label = this.r.text(point[0], point[1] + 30, node.content.label || node.id); // Beware: operator || also considers values like -1, 0, ...
+ node.shape = shape;
+ },
+ drawEdge: function(edge) {
+ /* if edge already has been drawn, only refresh the edge */
+ edge.connection && edge.connection.draw();
+ if(!edge.connection)
+ edge.connection = this.r.connection(edge.source.shape, edge.target.shape, { fg: edge.color, bg: edge.colorbg, directed: edge.directed });
+ }
+};
+Graph.Layout = {};
+Graph.Layout.Spring = function(graph) {
+ this.graph = graph;
+ this.iterations = 500;
+ this.maxRepulsiveForceDistance = 6;
+ this.k = 2;
+ this.c = 0.01;
+ this.maxVertexMovement = 0.5;
+ };
+Graph.Layout.Spring.prototype = {
+ layout: function() {
+ this.layoutPrepare();
+ for (var i = 0; i < this.iterations; i++) {
+ this.layoutIteration();
+ }
+ this.layoutCalcBounds();
+ },
+
+ layoutPrepare: function() {
+ for (var i = 0; i < this.graph.nodes.length; i++) {
+ var node = this.graph.nodes[i];
+ node.layoutPosX = 0;
+ node.layoutPosY = 0;
+ node.layoutForceX = 0;
+ node.layoutForceY = 0;
+ }
+
+ },
+
+ layoutCalcBounds: function() {
+ var minx = Infinity, maxx = -Infinity, miny = Infinity, maxy = -Infinity;
+
+ for (var i = 0; i < this.graph.nodes.length; i++) {
+ var x = this.graph.nodes[i].layoutPosX;
+ var y = this.graph.nodes[i].layoutPosY;
+
+ if(x > maxx) maxx = x;
+ if(x < minx) minx = x;
+ if(y > maxy) maxy = y;
+ if(y < miny) miny = y;
+ }
+
+ this.graph.layoutMinX = minx;
+ this.graph.layoutMaxX = maxx;
+ this.graph.layoutMinY = miny;
+ this.graph.layoutMaxY = maxy;
+ },
+
+ layoutIteration: function() {
+ // Forces on nodes due to node-node repulsions
+ for (var i = 0; i < this.graph.nodes.length; i++) {
+ var node1 = this.graph.nodes[i];
+ for (var j = i + 1; j < this.graph.nodes.length; j++) {
+ var node2 = this.graph.nodes[j];
+ this.layoutRepulsive(node1, node2);
+ }
+ }
+ // Forces on nodes due to edge attractions
+ for (var i = 0; i < this.graph.edges.length; i++) {
+ var edge = this.graph.edges[i];
+ this.layoutAttractive(edge);
+ }
+
+ // Move by the given force
+ for (var i = 0; i < this.graph.nodes.length; i++) {
+ var node = this.graph.nodes[i];
+ var xmove = this.c * node.layoutForceX;
+ var ymove = this.c * node.layoutForceY;
+
+ var max = this.maxVertexMovement;
+ if(xmove > max) xmove = max;
+ if(xmove < -max) xmove = -max;
+ if(ymove > max) ymove = max;
+ if(ymove < -max) ymove = -max;
+
+ node.layoutPosX += xmove;
+ node.layoutPosY += ymove;
+ node.layoutForceX = 0;
+ node.layoutForceY = 0;
+ }
+ },
+
+ layoutRepulsive: function(node1, node2) {
+ var dx = node2.layoutPosX - node1.layoutPosX;
+ var dy = node2.layoutPosY - node1.layoutPosY;
+ var d2 = dx * dx + dy * dy;
+ if(d2 < 0.01) {
+ dx = 0.1 * Math.random() + 0.1;
+ dy = 0.1 * Math.random() + 0.1;
+ var d2 = dx * dx + dy * dy;
+ }
+ var d = Math.sqrt(d2);
+ if(d < this.maxRepulsiveForceDistance) {
+ var repulsiveForce = this.k * this.k / d;
+ node2.layoutForceX += repulsiveForce * dx / d;
+ node2.layoutForceY += repulsiveForce * dy / d;
+ node1.layoutForceX -= repulsiveForce * dx / d;
+ node1.layoutForceY -= repulsiveForce * dy / d;
+ }
+ },
+
+ layoutAttractive: function(edge) {
+ var node1 = edge.source;
+ var node2 = edge.target;
+
+ var dx = node2.layoutPosX - node1.layoutPosX;
+ var dy = node2.layoutPosY - node1.layoutPosY;
+ var d2 = dx * dx + dy * dy;
+ if(d2 < 0.01) {
+ dx = 0.1 * Math.random() + 0.1;
+ dy = 0.1 * Math.random() + 0.1;
+ var d2 = dx * dx + dy * dy;
+ }
+ var d = Math.sqrt(d2);
+ if(d > this.maxRepulsiveForceDistance) {
+ d = this.maxRepulsiveForceDistance;
+ d2 = d * d;
+ }
+ var attractiveForce = (d2 - this.k * this.k) / this.k;
+ if(edge.weight == undefined || edge.weight < 1) edge.weight = 1;
+ attractiveForce *= Math.log(edge.weight) * 0.5 + 1;
+
+ node2.layoutForceX -= attractiveForce * dx / d;
+ node2.layoutForceY -= attractiveForce * dy / d;
+ node1.layoutForceX += attractiveForce * dx / d;
+ node1.layoutForceY += attractiveForce * dy / d;
+ }
+};
diff --git a/webconsole-plugins/servicediagnostics/core/src/main/resources/html/js/jquery.js b/webconsole-plugins/servicediagnostics/core/src/main/resources/html/js/jquery.js
new file mode 100755
index 0000000..396646c
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/core/src/main/resources/html/js/jquery.js
@@ -0,0 +1,19 @@
+/*
+ * jQuery JavaScript Library v1.3
+ * http://jquery.com/
+ *
+ * Copyright (c) 2009 John Resig
+ * Dual licensed under the MIT and GPL licenses.
+ * http://docs.jquery.com/License
+ *
+ * Date: 2009-01-13 12:50:31 -0500 (Tue, 13 Jan 2009)
+ * Revision: 6104
+ */
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diff --git a/webconsole-plugins/servicediagnostics/core/src/main/resources/html/js/raphael-min.js b/webconsole-plugins/servicediagnostics/core/src/main/resources/html/js/raphael-min.js
new file mode 100644
index 0000000..8718b5b
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/core/src/main/resources/html/js/raphael-min.js
@@ -0,0 +1,7 @@
+/*
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+ *
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+ */
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new file mode 100644
index 0000000..406c5c0
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/ServiceDiagnostics.scala
@@ -0,0 +1,37 @@
+/*
+ * 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.felix.servicediagnostics
+
+/**
+ * This is the main ServiceDiagnostics interface.
+ *
+ * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
+ */
+trait ServiceDiagnostics
+{
+ /**
+ * returns a map of component name to list of leaf unresolved dependencies.
+ */
+ def notavail:Map[String, List[Dependency]]
+
+ /**
+ * returns a map of resolved service names to list of bundles using the service
+ */
+ def allServices:Map[String, List[String]]
+}
diff --git a/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/ServiceDiagnosticsPlugin.scala b/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/ServiceDiagnosticsPlugin.scala
new file mode 100644
index 0000000..41b2444
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/ServiceDiagnosticsPlugin.scala
@@ -0,0 +1,46 @@
+/*
+ * 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.felix.servicediagnostics
+
+/**
+ * This is the interface to be implemented by participating service injection frameworks
+ * such as SCR or DependencyManager.
+ * Each plugin implementation is responsible for returning its own set of leaf unresolved dependencies.
+ *
+ * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
+ */
+trait ServiceDiagnosticsPlugin
+{
+ /**
+ * returns a map of unresolved service name -> list of missing deps
+ * leafs only: should not include intermediates
+ * @return the unresolved service names
+ */
+ def getUnresolvedDependencies:Map[String, List[Dependency]]
+}
+
+/**
+ * This class represents a service dependency.
+ * @param name the service name
+ * @param filter the optional service filter
+ */
+class Dependency(val name:String, val filter:String)
+{
+ override def toString = name//+"("+filter+")" FIXME
+}
diff --git a/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/impl/Activator.scala b/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/impl/Activator.scala
new file mode 100644
index 0000000..786d93b
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/impl/Activator.scala
@@ -0,0 +1,86 @@
+/*
+ * 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.felix.servicediagnostics.impl
+
+import scala.collection.mutable.Map
+import scala.collection.JavaConversions._
+
+import javax.servlet.http.HttpServlet
+
+import org.osgi.framework.BundleContext
+import org.osgi.service.http.HttpService
+
+import org.apache.felix.dm.DependencyActivatorBase
+import org.apache.felix.dm.DependencyManager
+
+import org.apache.felix.servicediagnostics._
+import org.apache.felix.servicediagnostics.webconsole.Servlet
+import org.apache.felix.servicediagnostics.webconsole.WebConsolePlugin
+
+/**
+ * Activator class for the service diagnostics core implementation
+ *
+ * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
+ */
+class Activator extends DependencyActivatorBase
+{
+ override def init(bc:BundleContext, dm:DependencyManager) =
+ {
+ // register our diagnostics service and its plugins
+ dm.add(createComponent
+ .setInterface(classOf[ServiceDiagnosticsPlugin].getName, null)
+ .setImplementation(new DMNotAvail(bc)))
+
+ dm.add(createComponent
+ .setInterface(classOf[ServiceDiagnosticsPlugin].getName, null)
+ .setImplementation(classOf[DSNotAvail])
+ .add(createServiceDependency
+ .setService(classOf[org.apache.felix.scr.ScrService])
+ .setAutoConfig("scrService")
+ setRequired(true)))
+
+ dm.add(createComponent
+ .setInterface(classOf[ServiceDiagnostics].getName, null)
+ .setImplementation(new ServiceDiagnosticsImpl(bc))
+ .add(createServiceDependency
+ .setService(classOf[ServiceDiagnosticsPlugin])
+ .setCallbacks("addPlugin", null, null)
+ .setRequired(false)))
+
+ // register the servlet used by webconsole plugin
+ dm.add(createComponent
+ .setInterface(classOf[HttpServlet].getName, null)
+ .setImplementation(classOf[Servlet])
+ .add(createServiceDependency
+ .setService(classOf[ServiceDiagnostics])
+ .setRequired(true)
+ .setAutoConfig("engine"))
+ .add(createServiceDependency
+ .setService(classOf[HttpService])
+ .setRequired(true)
+ .setCallbacks("setHttpService", null, null)))
+
+ // and the webconsole plugin itself
+ dm.add(createComponent
+ .setInterface(classOf[javax.servlet.Servlet].getName, Map("felix.webconsole.label" -> "servicegraph"))
+ .setImplementation(classOf[WebConsolePlugin]))
+ }
+
+ override def destroy(bc:BundleContext, dm:DependencyManager) = {}
+}
diff --git a/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/impl/DMNotAvail.scala b/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/impl/DMNotAvail.scala
new file mode 100644
index 0000000..cccb04a
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/impl/DMNotAvail.scala
@@ -0,0 +1,80 @@
+/*
+ * 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.felix.servicediagnostics.impl
+
+// this import of implicit methods makes java to scala collections conversions transparent (lists, maps)
+import scala.collection.JavaConversions._
+
+import org.osgi.framework.BundleContext
+import org.osgi.framework.ServiceReference
+
+import org.apache.felix.dm.DependencyManager
+import org.apache.felix.dm.ComponentDeclaration
+import org.apache.felix.dm.ComponentDeclaration._
+import org.apache.felix.dm.ComponentDependencyDeclaration
+import org.apache.felix.dm.ComponentDependencyDeclaration._
+
+import org.apache.felix.servicediagnostics._
+
+/**
+ * This class is the ServiceDiagnosticsPlugin implementation for org.apache.felix.dm.DependencyManager.
+ *
+ * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
+ */
+class DMNotAvail(val bc:BundleContext) extends ServiceDiagnosticsPlugin
+{
+
+ /**
+ * implements ServiceDiagnosticsPlugin.getUnresolvedDependencies
+ */
+ override def getUnresolvedDependencies:Map[String, List[Dependency]] =
+ {
+ // build a map(name -> comp) of all ComponentDeclarations known to DM, from each DependencyManager instance
+ val comps:Map[String, ComponentDeclaration] =
+ {
+ (for(dm <- DependencyManager.getDependencyManagers;
+ comp <- dm.asInstanceOf[DependencyManager].getComponents;
+ cd = comp.asInstanceOf[ComponentDeclaration])
+ // yield (k,v) builds a list of (k,v) pairs, the resulting list is then turned into a map
+ // notice that toMap applies to the complete for-comprehension block
+ // k is the ComponentDeclaration name stripped of its filter part: everything before the '('
+ yield (cd.getName.takeWhile(_ != '('), cd)) toMap
+ }
+
+ val compNames = comps.keySet
+
+ // build and return a map(name -> List(unavail)) of unavailable dependencies:
+ // filter out registered services from the known ComponentDeclarations
+ (for(kv <- comps.filter(kv => kv._2.getState == STATE_UNREGISTERED);
+ // kv._1 is the name, kv._2 is the component
+ // here, we lookup the component's list of dependencies
+ // filtering out the ones available and the ones already known to DM, to keep only leafs
+ // (view/force added for performance)
+ unavail = kv._2.getComponentDependencies.view
+ .filter(dep => dep.getState == STATE_UNAVAILABLE_REQUIRED)
+ .filterNot(dep => compNames.contains(dep.getName))
+ .map(dep => new Dependency(dep.getName, ""/*dep.getFilter*/)).force.toList;
+ if (unavail nonEmpty)) //this 'if' is part of the for comprehension
+ // again yield (k,v) builds a list of (k,v), the final result is then turned into a map
+ // notice that toMap applies to the complete for-comprehension block
+ // toMap being the last instruction, the resulting map is the return value of the method
+ yield (kv._1, unavail)) toMap
+ }
+
+}
diff --git a/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/impl/DSNotAvail.scala b/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/impl/DSNotAvail.scala
new file mode 100644
index 0000000..80101ed
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/impl/DSNotAvail.scala
@@ -0,0 +1,65 @@
+/*
+ * 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.felix.servicediagnostics.impl
+
+import scala.collection.JavaConversions._
+
+import org.apache.felix.scr.Component
+import org.apache.felix.scr.Reference
+import org.apache.felix.scr.ScrService
+
+import org.apache.felix.servicediagnostics._
+
+/**
+ * This class is the ServiceDiagnosticsPlugin implementation for org.apache.felix.scr.
+ *
+ * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
+ */
+class DSNotAvail extends ServiceDiagnosticsPlugin
+{
+
+ var scrService:ScrService = _ //dependency injection
+
+ /**
+ * implements ServiceDiagnosticsPlugin.getUnresolvedDependencies.
+ */
+ override def getUnresolvedDependencies:Map[String, List[Dependency]] =
+ {
+ /*
+ * Same algorithm as DMNotAvail with the SCR API.
+ * Please refer to DMNotAvail for comments.
+ */
+ val comps:Map[String, Component] =
+ (for (c <- Option(scrService.getComponents).flatten;
+ s <- Option(c.getServices).flatten)
+ yield (s, c)).toMap
+
+ val compNames = comps.keySet
+
+ (for (kv <- comps.filter(kv => kv._2.getState == Component.STATE_UNSATISFIED);
+ unavail = kv._2.getReferences.view
+ .filterNot(_ isSatisfied)
+ .filterNot(_ isOptional)
+ .filterNot(ref => compNames.contains(ref.getName))
+ .map(ref => new Dependency(ref.getServiceName, ref.getTarget)).force.toList;
+ if (unavail nonEmpty))
+ yield (kv._1, unavail)).toMap
+ }
+}
+
diff --git a/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/impl/ServiceDiagnosticsImpl.scala b/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/impl/ServiceDiagnosticsImpl.scala
new file mode 100644
index 0000000..e4073af
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/impl/ServiceDiagnosticsImpl.scala
@@ -0,0 +1,92 @@
+/*
+ * 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.felix.servicediagnostics.impl
+
+import scala.collection.mutable.Buffer
+
+import org.osgi.framework.BundleContext
+import org.osgi.framework.ServiceReference
+import org.osgi.framework.Constants.OBJECTCLASS
+
+import org.apache.felix.servicediagnostics._
+
+/**
+ * This is the ServiceDiagnostics implementation.
+ *
+ * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
+ */
+class ServiceDiagnosticsImpl(val bc:BundleContext) extends ServiceDiagnostics
+{
+ val plugins:Buffer[ServiceDiagnosticsPlugin] = Buffer()
+
+ def addPlugin(p:ServiceDiagnosticsPlugin) = plugins += p
+
+ /**
+ * Implements ServiceDiagnostics.notavail.
+ *
+ * This method gathers "notavail" information from all plugins
+ * and performs the final merge by removing known unregistered services
+ */
+ override def notavail =
+ {
+ // merge all notavails from plugins
+ // (kv stands for each key/value pair in a map)
+ val merged = (for(p <- plugins; kv <- p.getUnresolvedDependencies) yield kv) toMap
+
+ // remove remaining intermediates. ex: unresolved in DS -> unavailable in DM
+ // and return the resulting map
+ (for(kv <- merged; dep <- kv._2; if (merged.get(dep.name) isEmpty)) yield kv) toMap
+ }
+
+ /**
+ * Implements ServiceDiagnostics.allServices.
+ */
+ override def allServices:Map[String,List[String]] =
+ {
+ val allrefs = bc.getAllServiceReferences(null, null)
+ if (allrefs == null) return Map()
+
+ /*
+ * inner method used to return all the interface names a ServiceReference was registered under
+ */
+ def names(ref:ServiceReference):Array[String] =
+ {
+ val n = ref.getProperty(OBJECTCLASS)
+ if (n != null) n.asInstanceOf[Array[String]] else Array()
+ }
+
+ /*
+ * inner method used to return all the bundles using a given ServiceReference
+ */
+ def using(ref:ServiceReference):List[String] =
+ {
+ val u = ref.getUsingBundles
+ if (u != null) u.toList.map(_ toString) else List()
+ }
+
+ //scan all service references to build a map of service name to list of using bundles
+ (for(ref <- bc.getAllServiceReferences(null, null);
+ name <- names(ref);
+ u = using(ref);
+ if (u.nonEmpty))
+ // yield (key,value) accumulates a list of (key,value) pairs
+ // the resulting list is transformed to a map and returned
+ yield (name, u)) toMap
+ }
+}
diff --git a/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/webconsole/Servlet.scala b/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/webconsole/Servlet.scala
new file mode 100644
index 0000000..c26a3d7
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/webconsole/Servlet.scala
@@ -0,0 +1,72 @@
+/*
+ * 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.felix.servicediagnostics.webconsole
+
+import scala.collection.JavaConversions._
+import scala.collection.mutable.{Map => mMap}
+
+import java.io.PrintStream
+import javax.servlet.http._
+
+import org.json.JSONObject
+
+import org.osgi.service.http.HttpContext
+import org.osgi.service.http.HttpService
+
+import org.apache.felix.servicediagnostics.ServiceDiagnostics
+
+/**
+ * This is the servlet responding to the ajax requests, using the ServiceDiagnostics service
+ *
+ * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
+ */
+class Servlet extends HttpServlet
+{
+
+ var engine:ServiceDiagnostics = _ //dependency injection. see Activator.
+
+ /*
+ * dependency injection. see Activator.
+ * registers this servlet into the HttpService
+ */
+ def setHttpService(hs:HttpService) =
+ {
+ val hc = hs.createDefaultHttpContext
+ hs.registerServlet("/servicegraph/json", this, null, hc)
+ hs.registerResources("/servicegraph", "/html", hc)
+ }
+
+ override def service(req:HttpServletRequest, resp:HttpServletResponse) =
+ {
+ val cmd = req.getPathInfo
+ if(cmd.endsWith("all")) reply(resp, engine.allServices)
+ else if(cmd.endsWith("notavail")) reply(resp, engine.notavail)
+ else println("Unrecognized cmd: "+cmd)
+ }
+
+ /**
+ * turn the ServiceDiagnostics output into a JSON representation.
+ */
+ private def reply(resp:HttpServletResponse, map:Map[String,List[AnyRef]]) =
+ {
+ new PrintStream(resp.getOutputStream, true).println(
+ new JSONObject(asJavaMap(mMap() ++ map.map(kv => (kv._1, asJavaList(kv._2))))))
+ }
+}
+
diff --git a/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/webconsole/WebConsolePlugin.scala b/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/webconsole/WebConsolePlugin.scala
new file mode 100644
index 0000000..b3042fe
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/core/src/main/scala/servicediagnostics/webconsole/WebConsolePlugin.scala
@@ -0,0 +1,36 @@
+/*
+ * 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.felix.servicediagnostics.webconsole
+
+import javax.servlet.http._
+
+import org.apache.felix.webconsole.SimpleWebConsolePlugin
+
+/**
+ * This is the Apache Felix WebConsolePlugin implementation.
+ * It simply returns a static html page; actual processing is done by an ajax request to the servlet.
+ *
+ * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
+ */
+class WebConsolePlugin extends SimpleWebConsolePlugin("servicegraph", "Service Graph", Array[String]())
+{
+ val TEMPLATE = readTemplateFile("/html/index.html")
+
+ override def renderContent(req:HttpServletRequest, resp:HttpServletResponse) = resp.getWriter().print( TEMPLATE )
+}
diff --git a/webconsole-plugins/servicediagnostics/pom.xml b/webconsole-plugins/servicediagnostics/pom.xml
new file mode 100644
index 0000000..c329222
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/pom.xml
@@ -0,0 +1,90 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+ <modelVersion>4.0.0</modelVersion>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>servicediagnostics</artifactId>
+ <version>1.0.0-SNAPSHOT</version>
+ <packaging>pom</packaging>
+
+ <modules>
+ <module>core</module>
+ <module>sample</module>
+ </modules>
+
+
+ <repositories>
+ <repository>
+ <id>scala-tools.org</id>
+ <name>Scala-tools Maven2 Repository</name>
+ <url>http://scala-tools.org/repo-releases</url>
+ </repository>
+ </repositories>
+
+ <pluginRepositories>
+ <pluginRepository>
+ <id>scala-tools.org</id>
+ <name>Scala-tools Maven2 Repository</name>
+ <url>http://scala-tools.org/repo-releases</url>
+ </pluginRepository>
+ </pluginRepositories>
+
+ <dependencies>
+ <dependency>
+ <groupId>org.osgi</groupId>
+ <artifactId>org.osgi.core</artifactId>
+ <version>4.2.0</version>
+ </dependency>
+ <dependency>
+ <groupId>org.osgi</groupId>
+ <artifactId>org.osgi.compendium</artifactId>
+ <version>4.2.0</version>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>org.apache.felix.scr</artifactId>
+ <version>1.6.0</version>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>org.apache.felix.dependencymanager</artifactId>
+ <version>3.0.0</version>
+ </dependency>
+ <dependency>
+ <groupId>biz.aQute</groupId>
+ <artifactId>bndlib</artifactId>
+ <version>1.43.0</version>
+ </dependency>
+ </dependencies>
+
+ <build>
+ <sourceDirectory>src/main/scala</sourceDirectory>
+ <testSourceDirectory>src/test/scala</testSourceDirectory>
+
+ <plugins>
+ <plugin>
+ <groupId>org.scala-tools</groupId>
+ <artifactId>maven-scala-plugin</artifactId>
+ <executions>
+ <execution>
+ <goals>
+ <goal>compile</goal>
+ </goals>
+ </execution>
+ </executions>
+ <configuration>
+ <scalaVersion>2.8.1</scalaVersion>
+ </configuration>
+ </plugin>
+
+ <plugin>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>maven-bundle-plugin</artifactId>
+ <version>2.3.5</version>
+ <extensions>true</extensions>
+ </plugin>
+ </plugins>
+ </build>
+
+</project>
diff --git a/webconsole-plugins/servicediagnostics/run.sh b/webconsole-plugins/servicediagnostics/run.sh
new file mode 100755
index 0000000..8cdb368
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/run.sh
@@ -0,0 +1,16 @@
+REPO=$HOME/.m2/repository
+CLASSPATH=lib/scala-library-osgi.jar:$REPO/org/apache/felix/org.apache.felix.main/3.2.2/org.apache.felix.main-3.2.2.jar:sample/target/servicediagnostics.sample-1.0.0-SNAPSHOT.jar
+#scala
+java -classpath $CLASSPATH org.apache.felix.servicediagnostics.sample.FelixLauncher \
+ core/target/servicediagnostics.core-1.0.0-SNAPSHOT.jar\
+ sample/target/servicediagnostics.sample-1.0.0-SNAPSHOT.jar\
+ $REPO/org/apache/felix/org.apache.felix.main/3.2.2/org.apache.felix.main-3.2.2.jar\
+ $REPO/org/apache/felix/org.apache.felix.dependencymanager/3.0.0/org.apache.felix.dependencymanager-3.0.0.jar\
+ $REPO/org/apache/felix/org.apache.felix.scr/1.6.0/org.apache.felix.scr-1.6.0.jar\
+ $REPO/org/osgi/org.osgi.compendium/4.2.0/org.osgi.compendium-4.2.0.jar\
+ $REPO/org/apache/felix/org.apache.felix.http.jetty/2.2.0/org.apache.felix.http.jetty-2.2.0.jar\
+ $REPO/org/apache/felix/org.apache.felix.webconsole/3.1.8/org.apache.felix.webconsole-3.1.8.jar\
+ $REPO/org/apache/felix/org.apache.felix.shell/1.4.2/org.apache.felix.shell-1.4.2.jar\
+ lib/json-osgi.jar\
+ lib/scala-library-osgi.jar
+
diff --git a/webconsole-plugins/servicediagnostics/sample/pom.xml b/webconsole-plugins/servicediagnostics/sample/pom.xml
new file mode 100644
index 0000000..039c294
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/sample/pom.xml
@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+ <modelVersion>4.0.0</modelVersion>
+ <parent>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>servicediagnostics</artifactId>
+ <version>1.0.0-SNAPSHOT</version>
+ <relativePath>../pom.xml</relativePath>
+ </parent>
+
+ <groupId>org.apache.felix</groupId>
+ <artifactId>servicediagnostics.sample</artifactId>
+ <version>1.0.0-SNAPSHOT</version>
+ <packaging>bundle</packaging>
+
+ <dependencies>
+ <dependency>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>servicediagnostics.core</artifactId>
+ <version>1.0.0-SNAPSHOT</version>
+ </dependency>
+ <!-- runtime dependencies. added to populate the local repository -->
+ <dependency>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>org.apache.felix.main</artifactId>
+ <version>3.2.2</version>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>org.apache.felix.http.jetty</artifactId>
+ <version>2.2.0</version>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>org.apache.felix.shell</artifactId>
+ <version>1.4.2</version>
+ </dependency>
+ </dependencies>
+
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>org.scala-tools</groupId>
+ <artifactId>maven-scala-plugin</artifactId>
+ </plugin>
+
+ <plugin>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>maven-bundle-plugin</artifactId>
+ <configuration>
+ <instructions>
+ <Bundle-Category>osgi</Bundle-Category>
+ <Bundle-SymbolicName>
+ ${project.artifactId}
+ </Bundle-SymbolicName>
+ <Service-Component>
+ *
+ </Service-Component>
+ <Private-Package>
+ org.apache.felix.servicediagnostics.sample
+ </Private-Package>
+ <Import-Package>
+ !aQute.bnd.annotation.component,!org.apache.felix.main,*
+ </Import-Package>
+ </instructions>
+ </configuration>
+ </plugin>
+ </plugins>
+ </build>
+
+</project>
diff --git a/webconsole-plugins/servicediagnostics/sample/src/main/scala/servicediagnostics/sample/FelixLauncher.scala b/webconsole-plugins/servicediagnostics/sample/src/main/scala/servicediagnostics/sample/FelixLauncher.scala
new file mode 100644
index 0000000..51c03e3
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/sample/src/main/scala/servicediagnostics/sample/FelixLauncher.scala
@@ -0,0 +1,59 @@
+/*
+ * 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.felix.servicediagnostics.sample
+
+import java.util.HashMap
+import java.util.ServiceLoader
+
+import scala.io.Source
+
+import org.osgi.framework.launch.FrameworkFactory
+import org.apache.felix.main.AutoProcessor
+
+/**
+ * This is a simple launcher for the framework, that doesn't require a properties file.
+ * Bundles to be started are simply given in the command line.
+ *
+ * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
+ */
+object FelixLauncher
+{
+ def main(bundles:Array[String]) =
+ {
+ // load the FrameworkFactory implementation
+ val factory:FrameworkFactory = ServiceLoader.load(classOf[FrameworkFactory],
+ getClass.getClassLoader).iterator.next
+ // set our hardcoded felix.properties
+ val felixProps = new HashMap[String, String]
+ felixProps.put("org.osgi.framework.storage", ".cache")
+ felixProps.put("org.osgi.framework.storage.clean", "onFirstInit")
+ felixProps.put("felix.auto.install", bundles.map("file:"+_).mkString(" "))
+ felixProps.put("felix.auto.start", bundles.map("file:"+_).mkString(" "))
+ felixProps.put("org.osgi.framework.bootdelegation", "sun.*,com.sun.*")
+
+ //println("Launch Felix using "+factory+" and "+felixProps)
+ val felix = factory.newFramework(felixProps)
+ felix.init
+ // let the AutoProcessor process the properties (auto.install and auto.start)
+ AutoProcessor.process(felixProps, felix.getBundleContext)
+ // launch felix
+ felix.start
+ //println("Felix started")
+ }
+}
diff --git a/webconsole-plugins/servicediagnostics/sample/src/main/scala/servicediagnostics/sample/TestDM.scala b/webconsole-plugins/servicediagnostics/sample/src/main/scala/servicediagnostics/sample/TestDM.scala
new file mode 100644
index 0000000..d56b364
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/sample/src/main/scala/servicediagnostics/sample/TestDM.scala
@@ -0,0 +1,91 @@
+/*
+ * 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.felix.servicediagnostics.sample
+
+import org.osgi.framework.BundleContext
+import org.apache.felix.dm.DependencyActivatorBase
+import org.apache.felix.dm.DependencyManager
+import org.apache.felix.servicediagnostics.ServiceDiagnostics
+
+/**
+ * This class is a basic DependencyManager based demonstration
+ *
+ * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
+ */
+class TestDM extends DependencyActivatorBase
+{
+ var diagnostics:ServiceDiagnostics = _ //injected
+
+ override def init(bc:BundleContext, dm:DependencyManager)
+ {
+ // register a callback in this class to try the engine alone
+ // in text mode, when everything is started
+ dm.add(createComponent
+ .setImplementation(this)
+ .add(createServiceDependency
+ .setService(classOf[TestDS]) // also wait for DS initialization
+ .setAutoConfig(false)
+ .setRequired(true))
+ .add(createServiceDependency
+ .setService(classOf[ServiceDiagnostics])
+ .setAutoConfig("diagnostics")
+ .setRequired(true)))
+
+ // initialize some sample services for testing purpose (see also TestDS)
+ dm.add(createComponent
+ .setInterface(classOf[DM1].getName, null)
+ .setImplementation(classOf[DM1])
+ .add(createServiceDependency
+ .setService(classOf[DM2])
+ .setAutoConfig(false)
+ .setCallbacks(null, null, null)
+ .setRequired(true)))
+
+ dm.add(createComponent
+ .setInterface(classOf[DM2].getName, null)
+ .setImplementation(classOf[DM2])
+ .add(createServiceDependency
+ .setService(classOf[DM3])
+ .setAutoConfig(false)
+ .setCallbacks(null, null, null)
+ .setRequired(true)))
+
+ dm.add(createComponent
+ .setInterface(classOf[DM3].getName, null)
+ .setImplementation(classOf[DM3])
+ .add(createServiceDependency
+ .setService(classOf[Runnable]) //missing dependency
+ .setAutoConfig(false)
+ .setCallbacks(null, null, null)
+ .setRequired(true)))
+ }
+
+ override def destroy(bc:BundleContext, dm:DependencyManager) = {}
+
+ def start =
+ {
+ println("unavail="+diagnostics.notavail)
+ println("all="+diagnostics.allServices)
+ }
+}
+
+//sample service classes
+class DM1
+class DM2
+class DM3
diff --git a/webconsole-plugins/servicediagnostics/sample/src/main/scala/servicediagnostics/sample/TestDS.scala b/webconsole-plugins/servicediagnostics/sample/src/main/scala/servicediagnostics/sample/TestDS.scala
new file mode 100644
index 0000000..57adf9b
--- /dev/null
+++ b/webconsole-plugins/servicediagnostics/sample/src/main/scala/servicediagnostics/sample/TestDS.scala
@@ -0,0 +1,43 @@
+/*
+ * 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.felix.servicediagnostics.sample
+
+import aQute.bnd.annotation.component._
+
+/**
+ * This class is a basic SCR based demonstration
+ *
+ * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
+ */
+@Component(immediate=true, provide=Array(classOf[TestDS])) class TestDS
+
+@Component(provide=Array(classOf[DS1])) class DS1
+{
+ @Reference def setDS2(s:DS2) = {}
+}
+
+@Component(provide=Array(classOf[DS2])) class DS2
+{
+ @Reference def setDM3(s:DM3) = {}
+}
+
+@Component(provide=Array(classOf[DS3])) class DS3
+{
+ @Reference def setMap(s:java.util.Map[String,String]) = {} //not available
+}