Issue 191: added clojure support to chef

chef/core/src/main/clojure/org/jclouds/chef.clj

@@ -0,0 +1,92 @@
+;;
+;; Copyright (C) 2010 Cloud Conscious, LLC. <info@cloudconscious.com>
+;;
+;; ====================================================================
+;; Licensed 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 
+  #^{:author "Adrian Cole"
+     :doc "A clojure binding to the jclouds chef interface."}
+  org.jclouds.chef
+  (:use  org.jclouds.core (core))
+  (:import 
+        java.util.Properties
+        [org.jclouds.chef ChefClient
+          ChefService ChefContext ChefContextFactory]))
+(try
+ (use '[clojure.contrib.reflect :only [get-field]])
+ (catch Exception e
+   (use '[clojure.contrib.java-utils
+          :only [wall-hack-field]
+          :rename {wall-hack-field get-field}])))
+
+(defn pem
+  "get the pem associated with the supplied identity"
+  ([#^String identity]
+     (slurp (str (. System getProperty "user.home") "/.chef/" identity ".pem"))))
+
+(defn chef-service
+  "Create a logged in context."
+  ([#^String identity #^String credential & options]
+     (let [module-keys (set (keys module-lookup))
+           ext-modules (filter #(module-keys %) options)
+           opts (apply hash-map (filter #(not (module-keys %)) options))]
+       (.. (ChefContextFactory.)
+           (createContext identity credential 
+            (apply modules (concat ext-modules (opts :extensions)))
+            (reduce #(do (.put %1 (name (first %2)) (second %2)) %1)
+                    (Properties.) (dissoc opts :extensions)))
+           (getChefService)))))
+
+(defn chef-context
+  "Returns a chef context from a chef service."
+  [#^ChefService chef]
+  (.getContext chef))
+
+(defn chef-service?
+  [object]
+  (instance? ChefService object))
+
+(defn chef-context?
+  [object]
+  (instance? ChefContext object))
+
+(defn as-chef-service
+  "Tries hard to produce a chef service from its input arguments"
+  [& args]
+  (cond
+   (chef-service? (first args)) (first args)
+   (chef-context? (first args)) (.getChefService (first args))
+   :else (apply chef-service args)))
+
+(def *chef*)
+
+(defmacro with-chef-service
+  "Specify the default chef service"
+  [[& chef-or-args] & body]
+  `(binding [*chef* (as-chef-service ~@chef-or-args)]
+     ~@body))
+
+(defn nodes
+  "Retrieve the names of the existing nodes in your chef server."
+  ([] (nodes *chef*))
+  ([#^ChefService chef]
+    (seq (.listNodes (.getApi (.getContext chef))))))
+
+(defn nodes-with-details
+  "Retrieve the existing nodes in your chef server including all details."
+  ([] (nodes *chef*))
+  ([#^ChefService chef]
+    (seq (.listNodesDetails chef))))

chef/core/src/main/java/org/jclouds/chef/ChefService.java

@@ -38,9 +38,9 @@ public interface ChefService {
 
    void deleteAllNodesInList(Iterable<String> names);
 
-   Iterable<? extends Node> getNodes();
+   Iterable<? extends Node> listNodesDetails();
 
-   Iterable<? extends Node> getNodesWithNamesMatching(Predicate<String> nodeNameSelector);
+   Iterable<? extends Node> listNodesDetailsMatching(Predicate<String> nodeNameSelector);
 
    Iterable<? extends Node> getNodesNamed(Iterable<String> names);
 

chef/core/src/main/java/org/jclouds/chef/internal/BaseChefService.java

@@ -81,12 +81,12 @@ public class BaseChefService implements ChefService {
    }
 
    @Override
-   public Iterable<? extends Node> getNodes() {
+   public Iterable<? extends Node> listNodesDetails() {
       return getNodes.execute();
    }
 
    @Override
-   public Iterable<? extends Node> getNodesWithNamesMatching(Predicate<String> nodeNameSelector) {
+   public Iterable<? extends Node> listNodesDetailsMatching(Predicate<String> nodeNameSelector) {
       return getNodes.execute(nodeNameSelector);
    }