Add ability to output the things built/failed/not build

Instead of having users of kolla image building grep the
output of kolla (or grep `docker images` before and after
kolla is ran) to find what was actually built have kolla
be able to write exactly what was built (thus avoiding the
whole docker and grep stuff).

Closes-Bug: #1640973

Change-Id: I11c031b4ded2ff780fa3ceb809a2ee232b36100c

2 files changed, 23 insertions, 2 deletions

diff --git a/kolla/common/config.py b/kolla/common/config.py
index 962f2c537..5ef8a3990 100644
--- a/kolla/common/config.py
+++ b/kolla/common/config.py
@@ -110,6 +110,9 @@ _CLI_OPTS = [
     cfg.StrOpt('save-dependency',
                help=('Path to the file to store the docker image'
                      ' dependency in Graphviz dot format')),
+    cfg.StrOpt('format', short='f', default='json',
+               choices=['json', 'none'],
+               help=('Format to write the final results in')),
     cfg.StrOpt('type', short='t', default='binary',
                choices=INSTALL_TYPE_CHOICES,
                dest='install_type',
diff --git a/kolla/image/build.py b/kolla/image/build.py
index 3816fc8e4..fde63e6a0 100755
--- a/kolla/image/build.py
+++ b/kolla/image/build.py
@@ -739,6 +739,11 @@ class KollaWorker(object):
                 LOG.debug("Image %s failed", image.name)
 
         self.get_image_statuses()
+        results = {
+            'built': [],
+            'failed': [],
+            'not_matched': [],
+        }
 
         if self.image_statuses_good:
             LOG.info("=========================")
@@ -746,6 +751,9 @@ class KollaWorker(object):
             LOG.info("=========================")
             for name in self.image_statuses_good.keys():
                 LOG.info(name)
+                results['built'].append({
+                    'name': name,
+                })
 
         if self.image_statuses_bad:
             LOG.info("===========================")
@@ -753,6 +761,10 @@ class KollaWorker(object):
             LOG.info("===========================")
             for name, status in self.image_statuses_bad.items():
                 LOG.error('%s Failed with status: %s', name, status)
+                results['failed'].append({
+                    'name': name,
+                    'status': status,
+                })
 
         if self.image_statuses_unmatched:
             LOG.debug("=====================================")
@@ -760,6 +772,11 @@ class KollaWorker(object):
             LOG.debug("=====================================")
             for name in self.image_statuses_unmatched.keys():
                 LOG.debug(name)
+                results['not_matched'].append({
+                    'name': name,
+                })
+
+        return results
 
     def get_image_statuses(self):
         if any([self.image_statuses_bad,
@@ -997,7 +1014,8 @@ def run_build():
             queue.put(WorkerThread.tombstone)
             raise
 
-    kolla.summary()
+    results = kolla.summary()
     kolla.cleanup()
-
+    if conf.format == 'json':
+        print(json.dumps(results))
     return kolla.get_image_statuses()