amitjoy / osgi-scr-graph Goto Github PK

This repository comprises the API and optional Apache Felix Gogo Command to generate a DOT graph of the Service Component Runtime (SCR).

1. Java 8
2. OSGi R7

This project comprises the following list of bundles -

1. in.bytehue.osgi.scr.graph - The Service Component Runtime(SCR) Graph API and Implementation
2. in.bytehue.osgi.scr.graph.example - Example project for usages

To use it in the OSGi environment, you only need to install in.bytehue.osgi.scr.graph.

Import as Eclipse Projects

1. Install Bndtools
2. Import all the projects (File -> Import -> General -> Existing Projects into Workspace)

Run ./gradlew clean build in the project root directory

Amit Kumar Mondal ([email protected])

Want to contribute? Great! Check out Contribution Guide

This project is licensed under Apache License Version 2.0

Note that, the command will only work if and only if Felix Gogo bundles are installed in the OSGi runtime.

Copy the DOT graph representation format to a file having an extension of .dot and execute the following to convert them to PNG/SVG

• dot -Tpng filename.dot -o filename.png
• dot -Tsvg filename.dot -o filename.svg

To install dot in your computer, please follow this link

@Component
public final class GraphGenrator {

    @Reference
    private ScrGraph scrGraph;

    public String graph() {
        final Graph<ScrComponent, DefaultEdge> graph = scrGraph.getGraph();

        final Writer writer = new StringWriter();
        scrGraph.exportGraph(graph, writer);

        return writer.toString();
    }
}

@Component
public final class GraphCycleFinder {

    @Reference
    private ScrGraph scrGraph;

    public String cycle() {
        final List<List<ScrComponent>> cycles = scrGraph.getCycles();
        if (cycles.isEmpty()) {
            return "No SCR cycle exists";
        }
        final Graph<ScrComponent, DefaultEdge> cyclesAsGraph = scrGraph.getCyclesAsGraph();
        final Writer writer = new StringWriter();
        scrGraph.exportGraph(cyclesAsGraph, writer);

        return writer.toString();
    }

}