Merge pull request hudson2-plugins#19 from paulsowden/commit-notify

Add an action extension to remotely trigger a poll for a given git repo

Author: magnayn

src/main/java/hudson/plugins/git/GitStatus.java

@@ -0,0 +1,86 @@
+package hudson.plugins.git;
+
+import hudson.Extension;
+import hudson.model.AbstractModelObject;
+import hudson.model.AbstractProject;
+import hudson.model.Hudson;
+import hudson.model.RootAction;
+
+import hudson.scm.SCM;
+import hudson.triggers.SCMTrigger;
+
+import org.spearce.jgit.transport.RemoteConfig;
+import org.spearce.jgit.transport.URIish;
+
+import org.kohsuke.stapler.StaplerRequest;
+import org.kohsuke.stapler.StaplerResponse;
+
+import javax.servlet.ServletException;
+import static javax.servlet.http.HttpServletResponse.SC_OK;
+import java.io.IOException;
+
+import java.util.logging.Logger;
+import static java.util.logging.Level.INFO;
+
+/**
+ * Information screen for the use of Git in Hudson.
+ */
+@Extension
+public class GitStatus extends AbstractModelObject implements RootAction {
+    public String getDisplayName() {
+        return "Git";
+    }
+
+    public String getSearchUrl() {
+        return getUrlName();
+    }
+
+    public String getIconFileName() {
+        // TODO
+        return null;
+    }
+
+    public String getUrlName() {
+        return "git";
+    }
+
+    public void doNotifyCommit(StaplerRequest req, StaplerResponse rsp) throws ServletException, IOException {
+        String urlString = req.getParameter("url");
+	URIish url = null;
+        try {
+            url = new URIish(urlString);
+        } catch (java.net.URISyntaxException e) { }
+
+        boolean scmFound = false,
+                triggerFound = false,
+                urlFound = false;
+        for (AbstractProject<?,?> project : Hudson.getInstance().getItems(AbstractProject.class)) {
+            SCM scm = project.getScm();
+            if (scm instanceof GitSCM) scmFound = true; else continue;
+
+            SCMTrigger trigger = project.getTrigger(SCMTrigger.class);
+            if (trigger!=null) triggerFound = true; else continue;
+
+            GitSCM git = (GitSCM) scm;
+            for (RemoteConfig repository : git.getRepositories()) {
+                boolean repositoryMatches = false;
+                for (URIish remoteURL : repository.getURIs()) {
+                    if (url.equals(remoteURL)) { repositoryMatches = true; break; }
+                }
+                if (repositoryMatches) urlFound = true; else continue;
+
+                trigger.run();
+            }
+        }
+
+        if (url == null)    LOGGER.warning("Couldn't read url: " + urlString);
+        else if (!scmFound) LOGGER.warning("No git jobs found");
+        else if (!triggerFound) LOGGER.warning("No git jobs using SCM polling");
+        else if (!urlFound) LOGGER.warning("No git jobs using repository: " + url.toString());
+
+        rsp.setStatus(SC_OK);
+    }
+
+    private static final Logger LOGGER = Logger.getLogger(GitStatus.class.getName());
+}
+