Github user d2r commented on a diff in the pull request:
https://github.com/apache/storm/pull/576#discussion_r31825011
--- Diff: storm-core/src/clj/backtype/storm/command/get_errors.clj ---
@@ -0,0 +1,52 @@
+;; 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.
+(ns backtype.storm.command.get-errors
+ (:use [clojure.tools.cli :only [cli]])
+ (:use [backtype.storm thrift log])
+ (:use [backtype.storm util])
+ (:require [backtype.storm.daemon
+ [nimbus :as nimbus]
+ [common :as common]])
+ (:import [backtype.storm.generated GetInfoOptions NumErrorsChoice
+ TopologySummary ErrorInfo])
+ (:gen-class))
+
+(defn get-topology-id [name topologies]
+ (let [topology (first (filter #(= (.get_name %1) name) topologies))]
+ (when (not-nil? topology) (.get_id topology))))
+
+(defn get-component-errors
+ [topology-errors]
+ (apply hash-map (remove nil?
+ (flatten (for [[comp-name comp-errors] topology-errors]
+ (let [latest-error (when (not (empty?
comp-errors)) (first comp-errors))]
+ (if latest-error [comp-name (.get_error
^ErrorInfo latest-error)])))))))
+
+(defn -main [name]
+ (with-configured-nimbus-connection nimbus
+ (let [opts (doto (GetInfoOptions.)
+ (.set_num_err_choice NumErrorsChoice/ONE))
+ cluster-info (.getClusterInfo nimbus)
+ topologies (.get_topologies cluster-info)
+ topo-id (get-topology-id name topologies)
+ topo-info (when (not-nil? topo-id) (.getTopologyInfoWithOpts
nimbus topo-id opts))]
+ (if (or (nil? topo-id) (nil? topo-info))
+ (println (to-json {"Failure" (str "No topologies running with name
" name)}))
+ (let [topology-name (.get_name topo-info)
+ topology-errors (.get_errors topo-info)]
+ (println (to-json (hash-map
+ "Topology Name" topology-name
+ "Comp-Errors" (get-component-errors
topology-errors)))))))))
--- End diff --
really minor: There are some strange formatting issues in the last three
lines.
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