fix check for downstreams (#2309)

Merged PR #2309.

.ci/magic-modules/downstream_changelog_metadata.py

@@ -11,7 +11,7 @@
 unset.
 """
 from pyutils import strutils, downstreams
-from github import Github
+import github
 import os
 import sys
 import argparse
@@ -46,20 +46,18 @@ def downstream_changelog_info(gh, upstream_pr_num, changelog_repos):
   print "Labels: %s" % labels_to_add
 
   parsed_urls = downstreams.get_parsed_downstream_urls(gh, upstream_pr.number)
-  if not parsed_urls:
-    print "No downstreams found for upstream PR %d, returning!" % (
-      upstream_pr.number)
-    return
+  found = False
 
   for repo_name, pulls in parsed_urls:
+    found = True
     print "Found downstream PR for repo %s" % repo_name
-    
+
     if repo_name not in changelog_repos:
       print "[DEBUG] skipping repo %s with no CHANGELOG" % repo_name
       continue
 
     print "Generating changelog for pull requests in %s" % repo_name
-    
+
     print "Fetching repo %s" % repo_name
     ghrepo = gh.get_repo(repo_name)
 
@@ -68,6 +66,9 @@ def downstream_changelog_info(gh, upstream_pr_num, changelog_repos):
       pr = ghrepo.get_pull(int(prnum))
       set_changelog_info(pr, release_note, labels_to_add)
 
+  if not found:
+    print "No downstreams found for upstream PR %d, returning!" % upstream_pr.number
+
 def set_changelog_info(gh_pull, release_note, labels_to_add):
   """Set release note and labels on a downstream PR in Github.
 
@@ -95,9 +96,12 @@ def set_changelog_info(gh_pull, release_note, labels_to_add):
     print "Skipping, no downstreams repos given to downstream changelog info for"
     sys.exit(0)
 
-  gh = Github(os.environ.get('GITHUB_TOKEN'))
-
+  gh = github.Github(os.environ.get('GITHUB_TOKEN'))
   assert len(sys.argv) == 2, "expected id filename as argument"
   with open(sys.argv[1]) as f:
     pr_num = int(f.read())
-    downstream_changelog_info(gh, pr_num, downstream_repos)
+    try:
+      downstream_changelog_info(gh, pr_num, downstream_repos)
+    except e:
+      print "got error %s" % e
+      raise e

.ci/magic-modules/pyutils/downstreams.py

@@ -81,9 +81,9 @@ def get_downstream_urls(client, pr_num):
     List of downstream PR URLs.
   """
   urls = []
+  print "Getting downstream URLs for PR %d..." % pr_num
   pr = client.get_repo(UPSTREAM_REPO).get_pull(pr_num)
   for comment in pr.get_issue_comments():
     urls = urls + find_dependency_urls_in_comment(comment.body)
+  print "Found downstream URLs: %s" % urls
   return urls
-
-