Merge pull request #37 from sschneid/queryable_vm_metadata

Queryable VM metadata

README.md

@@ -143,6 +143,25 @@ $ curl -d --url vmpooler.company.com/vm/debian-7-i386+debian-7-i386+debian-7-x86
 }
 ```
 
+#### GET /vm/<hostname%gt;
+
+Query a checked-out VM.
+
+```
+$ curl --url vmpooler.company.com/vm/pxpmtoonx7fiqg6
+```
+```json
+{
+  "ok": true,
+  "pxpmtoonx7fiqg6": {
+    "template": "centos-6-x86_64",
+    "lifetime": 12,
+    "running": 3,
+    "domain": "company.com"
+  }
+}
+```
+
 #### PUT /vm/<hostname>
 
 Modify a checked-out VM.

lib/vmpooler/api.rb

@@ -22,6 +22,16 @@ module Vmpooler
 
         set :environment, 'production'
 
+        helpers do
+          def hostname_shorten hostname
+            if ( $config[:config]['domain'] and hostname =~ /^\w+\.#{$config[:config]['domain']}$/ )
+              hostname = hostname[/[^\.]+/]
+            end
+
+            hostname
+          end
+        end
+
         get '/' do
           erb :dashboard, locals: {
             site_name: $config[:config]['site_name'] || '<b>vmpooler</b>',
@@ -228,16 +238,6 @@ module Vmpooler
           JSON.pretty_generate(result)
         end
 
-        get '/vm/:template/?' do
-          content_type :json
-
-          result = {}
-          result[params[:template]] = {}
-          result[params[:template]]['hosts'] = $redis.smembers('vmpooler__ready__'+params[:template])
-
-          JSON.pretty_generate(result)
-        end
-
         post '/vm/:template/?' do
           content_type :json
 
@@ -296,6 +296,32 @@ module Vmpooler
           JSON.pretty_generate(result)
         end
 
+        get '/vm/:hostname/?' do
+          content_type :json
+
+          result = {}
+
+          result['ok'] = false
+
+          params[:hostname] = hostname_shorten(params[:hostname])
+
+          if $redis.exists('vmpooler__vm__'+params[:hostname])
+            result['ok'] = true
+
+            result[params[:hostname]] = {}
+
+            result[params[:hostname]]['template'] = $redis.hget('vmpooler__vm__'+params[:hostname], 'template')
+            result[params[:hostname]]['lifetime'] = $redis.hget('vmpooler__vm__'+params[:hostname], 'lifetime') || $config[:config]['vm_lifetime']
+            result[params[:hostname]]['running'] = ((Time.now - Time.parse($redis.hget('vmpooler__active__'+result[params[:hostname]]['template'], params[:hostname])))/60/60).round(2)
+
+            if ( $config[:config]['domain'] )
+              result[params[:hostname]]['domain'] = $config[:config]['domain']
+            end
+          end
+
+          JSON.pretty_generate(result)
+        end
+
         delete '/vm/:hostname/?' do
           content_type :json
 
@@ -303,9 +329,7 @@ module Vmpooler
 
           result['ok'] = false
 
-          if ( $config[:config]['domain'] and params[:hostname] =~ /^\w+\.#{$config[:config]['domain']}$/ )
-            params[:hostname] = params[:hostname][/[^\.]+/]
-          end
+          params[:hostname] = hostname_shorten(params[:hostname])
 
           $config[:pools].each do |pool|
             if $redis.sismember('vmpooler__running__'+pool['name'], params[:hostname])
@@ -325,6 +349,8 @@ module Vmpooler
 
           result['ok'] = false
 
+          params[:hostname] = hostname_shorten(params[:hostname])
+
           if $redis.exists('vmpooler__vm__'+params[:hostname])
             jdata = JSON.parse(request.body.read)
 

lib/vmpooler/pool_manager.rb

@@ -184,6 +184,7 @@ module Vmpooler
         # Add VM to Redis inventory ('pending' pool)
         $redis.sadd('vmpooler__pending__'+vm['template'], vm['hostname'])
         $redis.hset('vmpooler__vm__'+vm['hostname'], 'clone', Time.now)
+        $redis.hset('vmpooler__vm__'+vm['hostname'], 'template', vm['template'])
 
         # Annotate with creation time, origin template, etc.
         configSpec = RbVmomi::VIM.VirtualMachineConfigSpec(