feat(graphs): add getall and get

Signed-off-by: Josh Kurz <josh.kurz@turner.com>

lib/api/graph.js

@@ -128,6 +128,8 @@ function revokeEmbed(embedId, callback){
 
 /*section: graph
  *comment: get all embeds from datadog
+ *params:
+ *  callback: function(err, res)
  *example: |
  *  ```javascript
  *  dogapi.graph.getEmbeds(function(err, res){
@@ -139,15 +141,36 @@ function getEmbeds(callback) {
     client.request("GET", '/graph/embed', callback);
 }
 
+/*section: graph
+ *comment: get a single embed
+ *params:
+ *  embedId: the id of the embed to get
+ *  callback: function(err, res)
+ *example: |
+ *  ```javascript
+ *  var embedId = "foo";
+ *  dogapi.graph.getEmbed(embedId, function(err, res){
+ *    console.dir(res);
+ *  });
+ *  ```
+ */
+function getEmbed(embedId, callback) {
+    client.request("GET", '/graph/embed/' + embedId, callback);
+}
+
 module.exports = {
     snapshot: snapshot,
     createEmbed: createEmbed,
     revokeEmbed: revokeEmbed,
     getEmbeds: getEmbeds,
+    getEmbed: getEmbed,
     getUsage: function(){
         return [
             "  dogapi graph snapshot <query> <from> <to> [--events <event-query>]",
-            "  dogapi graph create_embed <graph_json> [--timeframe <timeframe>] [--size <size>] [--legend <legend>] [--title <title>]"
+            "  dogapi graph create_embed <graph_json> [--timeframe <timeframe>] [--size <size>] [--legend <legend>] [--title <title>]",
+            "  dogapi graph revoke_embed <graph_id>",
+            "  dogapi graph get <graph_id>",
+            "  dogapi graph getall <graph_id>"
         ];
     },
     getHelp: function(){
@@ -157,6 +180,8 @@ module.exports = {
             "    snapshot <query> <from> <to> --events <event-query>     |     take a snapshot of a graph",
             "    create_embed <graph_json> --timeframe <timeframe> --size <size> --legend <legend> --title <title>     |     create a new graph embed",
             "    revoke_embed <embed_id>     |     revoke/delete an embed",
+            "    get <embed_id>              |     gets a single embed object",
+            "    getall                      |     gets all embed objects",
             "  Options:",
             "    --events <event-query>          a query for event bands to add to the snapshot",
             "    --timeframe  <timeframe>        The timeframe for the embed (1_hour, 4_hours, 1_day, 2_days, and 1_week)",
@@ -185,6 +210,9 @@ module.exports = {
         } else if (args._.length > 4 && subcommand === "revoke_embed") {
             var graphId = args._[4];
             revokeEmbed(graphId, callback);
+        } else if (args._.length > 4 && subcommand === "get") {
+            var graphId = args._[4];
+            getEmbed(graphId, callback);
         } else if (args._.length === 4 && subcommand === "getall") {
             getEmbeds(callback);
         } else {