oh yeah.. inspection output and more

Author: nir0s

packer/interface.py

@@ -2,6 +2,7 @@
 import logging
 import sh
 import sys
+# import re
 
 DEFAULT_PACKER_PATH = 'packer'
 
@@ -87,3 +88,29 @@ def build(self, parallel=True, debug=False, force=False):
         lgr.info('Running build: {0}'.format(self.packerfile))
         lgr.info('Executing: {0}'.format(self._join(builder().cmd)))
         return builder()
+
+    def inspect(self):
+        inspector = self.packer.inspect
+        inspector = inspector.bake('-machine-readable', self.packerfile)
+        lgr.info('Inspecting packerfile: {0}'.format(self.packerfile))
+        result = inspector()
+        result.parsed_output = self._parse_inspection_output(result.stdout)
+        return result
+
+    def _parse_inspection_output(self, output):
+        parts = {'variables': [], 'builders': [], 'provisioners': []}
+        for l in output.splitlines():
+            l = l.split(',')
+            if l[2].startswith('template'):
+                del l[0:2]
+                component = l[0]
+                if component == 'template-variable':
+                    variable = {"name": l[1], "value": l[2]}
+                    parts['variables'].append(variable)
+                elif component == 'template-builder':
+                    builder = {"name": l[1], "type": l[2]}
+                    parts['builders'].append(builder)
+                elif component == 'template-provisioner':
+                    provisioner = {"type": l[1]}
+                    parts['provisioners'].append(provisioner)
+        return parts

packer/tests/resources/packerfile.json

@@ -73,5 +73,11 @@
       "only": ["virtualbox"],
       "output": "cloudify_{{.Provider}}.box"
     }
+  ],
+  "post-processors": [
+    {
+      "type": "compress",
+      "format": "tar.gz"
+    }
   ]
 }

tester.py

@@ -1,7 +1,7 @@
 import packer.interface as packer
 import os
 
-packerfile = os.path.expanduser('~/repos/cloudify-packager/image-builder/quickstart-vagrantbox/packerfile.json')  # NOQA
+packerfile = os.path.expanduser('packer/tests/resources/packerfile.json')  # NOQA
 
 # exc = ['z', 't']
 exc = []
@@ -14,5 +14,7 @@
 p = packer.Packer(packerfile, exc=exc, only=only, vars=vars)
 # print(p.version())
 
-print(p.validate(syntax_only=True))
+# print(p.validate(syntax_only=True))
 # print(p.build())
+result = p.inspect()
+print result.parsed_output