Add log and link aliasing to BuildBot.

third_party/buildbot_8_4p1/buildbot/status/buildstep.py

Index: third_party/buildbot_8_4p1/buildbot/status/buildstep.py
diff --git a/third_party/buildbot_8_4p1/buildbot/status/buildstep.py b/third_party/buildbot_8_4p1/buildbot/status/buildstep.py
index cbd8cc4fad5e235612c291906af89e4562b5140a..a898e669bb890ed2438533b70310323f95262981 100644
--- a/third_party/buildbot_8_4p1/buildbot/status/buildstep.py
+++ b/third_party/buildbot_8_4p1/buildbot/status/buildstep.py
@@ -78,6 +78,7 @@ class BuildStepStatus(styles.Versioned):
         self.hidden = False
         self.logs = []
         self.urls = collections.OrderedDict()
+        self.aliases = {}
         self.watchers = []
         self.updates = {}
         self.finishedWatchers = []
@@ -121,6 +122,9 @@ class BuildStepStatus(styles.Versioned):
     def getURLs(self):
         return self.urls.copy()
 
+    def getAliases(self):
+        return getattr(self, 'aliases', {}).copy()
+
     def isStarted(self):
         return (self.started is not None)
 
@@ -276,9 +280,20 @@ class BuildStepStatus(styles.Versioned):
         for w in self.watchers:
             w.logFinished(build, self, log)
 
-    def addURL(self, name, url):
+    def addURL(self, name, url, alias_text=None):
         self.urls[name] = url
 
+    def addAlias(self, name, url, text=None):
+        # "name" already exists as a URL. Add this as an alias.
+        aliases = getattr(self, 'aliases', None)
+        if aliases is None:
+            aliases = self.aliases = {}
+
+        value = aliases.setdefault(name, [])
+        if not text:
+            text = str(len(value))
+        value.append((text, url))
+
     def setText(self, text):
         self.text = text
         build = self.getBuild()