Merge pull request #78 from jenkinsci/JENKINS-39150

[FIXED JENKINS-39150] report remoting diagnostics when it's available
jenkinsci · Dec 6, 2016 · 5f2f23d · 5f2f23d
2 parents c05e6e1 + 1f43ffb
commit 5f2f23d
Showing 1 changed file with 51 additions and 0 deletions.
diff --git a/src/main/java/com/cloudbees/jenkins/support/impl/RemotingDiagnostics.java b/src/main/java/com/cloudbees/jenkins/support/impl/RemotingDiagnostics.java
@@ -0,0 +1,51 @@
+package com.cloudbees.jenkins.support.impl;
+
+import com.cloudbees.jenkins.support.api.Component;
+import com.cloudbees.jenkins.support.api.Container;
+import com.cloudbees.jenkins.support.api.PrintedContent;
+import edu.umd.cs.findbugs.annotations.NonNull;
+import hudson.remoting.Channel;
+import hudson.security.Permission;
+import jenkins.model.Jenkins;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.lang.reflect.Method;
+import java.util.Collections;
+import java.util.Set;
+
+/**
+ * Captures diagnostics information from remoting channels.
+ *
+ * @author Kohsuke Kawaguchi
+ */
+public class RemotingDiagnostics extends Component {
+
+    @NonNull
+    @Override
+    public Set<Permission> getRequiredPermissions() {
+        return Collections.singleton(Jenkins.ADMINISTER);
+    }
+
+    @NonNull
+    @Override
+    public String getDisplayName() {
+        return "Remoting Channel Diagnostics";
+    }
+
+    @Override
+    public void addContents(@NonNull Container container) {
+        container.add(new PrintedContent("channel-diagnostics.md") {
+            @Override
+            protected void printTo(PrintWriter out) throws IOException {
+                // this method is new in remoting. see JENKINS-39150 change in remoting
+                try {
+                    Method m = Channel.class.getMethod("dumpDiagnosticsForAll", PrintWriter.class);
+                    m.invoke(null,out);
+                } catch (Exception e) {
+                    e.printStackTrace(out);
+                }
+            }
+        });
+    }
+}