superproject: Use bugurl from contactinfo in the missing commits error message.

+ In XmlManifest._Unload set 'bugurl' to Wrapper().BUG_URL.
+ contactinfo returns a namedtuple.
+ bug_url can be accessed as self._manifest.contactinfo.bugurl.

Tested the code with the following commands.

$ ./run_tests -v

Added contactinfo tag to default.xml and verified that bugurl is used.

Bug: [google internal] b/186220520.
Change-Id: Iaafd6465e072b2e47a0a0b548bf6cb608a0b0a04
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/306342
Tested-by: Raman Tenneti <rtenneti@google.com>
Reviewed-by: Mike Frysinger <vapier@google.com>

git_superproject.py

diff --git a/git_superproject.py b/git_superproject.py
index 04e2078..3168d9f 100644
--- a/git_superproject.py
+++ b/git_superproject.py
@@ -28,7 +28,6 @@
 
 from git_command import GitCommand
 from git_refs import R_HEADS
-from wrapper import Wrapper
 
 _SUPERPROJECT_GIT_NAME = 'superproject.git'
 _SUPERPROJECT_MANIFEST_NAME = 'superproject_override.xml'
@@ -283,7 +282,7 @@
         projects_missing_commit_ids.append(path)
     if projects_missing_commit_ids:
       print('error: please file a bug using %s to report missing commit_ids for: %s' %
-            (Wrapper().BUG_URL, projects_missing_commit_ids), file=sys.stderr)
+            (self._manifest.contactinfo.bugurl, projects_missing_commit_ids), file=sys.stderr)
       return None
 
     manifest_path = self._WriteManfiestFile()

manifest_xml.py

diff --git a/manifest_xml.py b/manifest_xml.py
index e1d630b..9cbdcd1 100644
--- a/manifest_xml.py
+++ b/manifest_xml.py
@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import collections
 import itertools
 import os
 import platform
@@ -27,11 +28,15 @@
 from project import RemoteSpec, Project, MetaProject
 from error import (ManifestParseError, ManifestInvalidPathError,
                    ManifestInvalidRevisionError)
+from wrapper import Wrapper
 
 MANIFEST_FILE_NAME = 'manifest.xml'
 LOCAL_MANIFEST_NAME = 'local_manifest.xml'
 LOCAL_MANIFESTS_DIR_NAME = 'local_manifests'
 
+# ContactInfo has the self-registered bug url, supplied by the manifest authors.
+ContactInfo = collections.namedtuple('ContactInfo', 'bugurl')
+
 # urljoin gets confused if the scheme is not known.
 urllib.parse.uses_relative.extend([
     'ssh',
@@ -479,10 +484,10 @@
         e.setAttribute('remote', remoteName)
       root.appendChild(e)
 
-    if self._contactinfo:
+    if self._contactinfo.bugurl != Wrapper().BUG_URL:
       root.appendChild(doc.createTextNode(''))
       e = doc.createElement('contactinfo')
-      e.setAttribute('bugurl', self._contactinfo['bugurl'])
+      e.setAttribute('bugurl', self._contactinfo.bugurl)
       root.appendChild(e)
 
     return doc
@@ -646,7 +651,7 @@
     self._default = None
     self._repo_hooks_project = None
     self._superproject = {}
-    self._contactinfo = {}
+    self._contactinfo = ContactInfo(Wrapper().BUG_URL)
     self._notice = None
     self.branch = None
     self._manifest_server = None
@@ -892,7 +897,8 @@
       if node.nodeName == 'contactinfo':
         bugurl = self._reqatt(node, 'bugurl')
         # This element can be repeated, later entries will clobber earlier ones.
-        self._contactinfo['bugurl'] = bugurl
+        self._contactinfo = ContactInfo(bugurl)
+
       if node.nodeName == 'remove-project':
         name = self._reqatt(node, 'name')
 

tests/test_manifest_xml.py

diff --git a/tests/test_manifest_xml.py b/tests/test_manifest_xml.py
index 6095c72..99848e5 100644
--- a/tests/test_manifest_xml.py
+++ b/tests/test_manifest_xml.py
@@ -576,7 +576,7 @@
   <contactinfo bugurl="{bugurl}"/>
 </manifest>
 """)
-    self.assertEqual(manifest.contactinfo['bugurl'], bugurl)
+    self.assertEqual(manifest.contactinfo.bugurl, bugurl)
     self.assertEqual(
         manifest.ToXml().toxml(),
         '<?xml version="1.0" ?><manifest>'