Support server aliases for Perforce.

Some Perforce setups have DNS aliases for a Perforce server. We currently
fetch the server aliases, but weren't doing anything with them. Now we support
scanning a list of aliases against the known list of repositories on Review
Board in order to find the right repository URL to use. This happens
automatically without any additional configuration.

Patch by Ravi Kondamuru
Reviewed at http://reviews.reviewboard.org/r/1235/

2 files changed, 40 insertions, 5 deletions

diff --git a/AUTHORS b/AUTHORS
index 04653a9..3a2861d 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -19,6 +19,7 @@ Contributors:
 	* Matthew Woehlke
 	* Paul Scott
 	* Raghu Kaippully
+	* Ravi Kondamuru
 	* Ryan Oblak
 	* Stacey Sheldon
 	* Steven Russell
diff --git a/rbtools/postreview.py b/rbtools/postreview.py
index 2df2bb0..34c4591 100755
--- a/rbtools/postreview.py
+++ b/rbtools/postreview.py
@@ -367,8 +367,23 @@ class ReviewBoardServer(object):
         the submitter of the review request (given that the logged in user has
         the appropriate permissions).
         """
+
+        # If repository_path is a list, find a name in the list that's
+        # registered on the server.
+        if isinstance(self.info.path, list):
+            repositories = self.get_repositories()
+
+            debug("Repositories on Server: %s" % repositories)
+            debug("Server Aliases: %s" % self.info.path)
+
+            for repository in repositories:
+                if repository['path'] in self.info.path:
+                    self.info.path = repository['path']
+                    break
+
         try:
-            debug("Attempting to create review request for %s" % changenum)
+            debug("Attempting to create review request on %s for %s" %
+                  (self.info.path, changenum))
             data = { 'repository_path': self.info.path }
 
             if changenum:
@@ -664,9 +679,20 @@ class SCMClient(object):
             if not isinstance(trees, dict):
                 die("Warning: 'TREES' in config file is not a dict!")
 
-            if repository_info.path in trees and \
-               'REVIEWBOARD_URL' in trees[repository_info.path]:
-                return trees[repository_info.path]['REVIEWBOARD_URL']
+            # If repository_info is a list, check if any one entry is in trees.
+            path = None
+
+            if isinstance(repository_info.path, list):
+                for path in repository_info.path:
+                    if path in trees:
+                        break
+                else:
+                    path = None
+            elif repository_info.path in trees:
+                path = repository_info.path
+
+            if path and 'REVIEWBOARD_URL' in trees[path]:
+                return trees[path]['REVIEWBOARD_URL']
 
         return None
 
@@ -1293,7 +1319,15 @@ class PerforceClient(SCMClient):
         try:
             hostname, port = repository_path.split(":")
             info = socket.gethostbyaddr(hostname)
-            repository_path = "%s:%s" % (info[0], port)
+
+            # If aliases exist for hostname, create a list of alias:port
+            # strings for repository_path.
+            if info[1]:
+                servers = [info[0]] + info[1]
+                repository_path = ["%s:%s" % (server, port)
+                                   for server in servers]
+            else:
+                repository_path = "%s:%s" % (info[0], port)
         except (socket.gaierror, socket.herror):
             pass