Add local testing mode to the buildmaster config (#289)

This makes it (relatively) easy to test a builder setup locally. The
buildmaster and the web interface should be bound only to local
interfaces for security reasons (you can use ssh port forwarding if
wanting to run on a server).

See llvm/llvm-project#115024 for instructions on how to use, but note #293 is needed to avoid disabling certain builders or needing to hack your local buildbot install.

buildbot/osuosl/master/config/workers.py

@@ -4,7 +4,10 @@
 import config
 
 def create_worker(name, *args, **kwargs):
-    password = config.options.get('Worker Passwords', name)
+    if config.options.getboolean('Internal', 'test_mode'):
+        password = "test"
+    else:
+        password = config.options.get('Worker Passwords', name)
     return worker.Worker(name, password=password, *args, **kwargs)
 
 def get_all():

buildbot/osuosl/master/master.cfg

@@ -26,11 +26,18 @@ c['buildbotNetUsageData'] = None
 import config
 reload(config)
 
+# Detect if the BUILDMASTER_TEST environment variable is set and non-zero.
+# This will be used to enable a local testing mode.
+buildmaster_test = os.environ.get('BUILDMASTER_TEST')
+test_mode = bool(buildmaster_test) and buildmaster_test != '0'
+config.options['Internal'] = {}
+config.options['Internal']['test_mode'] = str(test_mode)
+
 ####### Workers
 
 c['workers'] = config.workers.get_all()
 
-c['protocols'] = {'pb': {'port': 9990}}
+c['protocols'] = {'pb': {'port': "tcp:9990:interface=127.0.0.1" if test_mode else 9990}}
 
 ####### CHANGESOURCES
 
@@ -94,25 +101,29 @@ c['services'] = config.status.getReporters()
 
 ####### PROJECT IDENTITY
 
-c['title'] = config.options.get('Buildbot', 'title')
-c['titleURL'] = config.options.get('Buildbot', 'title_url')
-c['buildbotURL'] = config.options.get('Buildbot', 'my_url')
+c['title'] = "Buildbot (test)" if test_mode else config.options.get('Buildbot', 'title')
+c['titleURL'] = "http://localhost:8011/" if test_mode else config.options.get('Buildbot', 'title_url')
+c['buildbotURL'] = "http://localhost:8011/" if test_mode else config.options.get('Buildbot', 'my_url')
 
 # minimalistic config to activate new web UI
-c['www'] = dict(port=8011,
-                plugins=dict(waterfall_view={}, console_view={}, grid_view={}), # TODO: badges
-                default_page='console',
-                auth=config.auth.getAuth(),
-                authz=config.auth.getAuthz(),
-                #logRotateLength=
-                #maxRotatedFiles=
-                #versions=
+www_config = dict(port="tcp:8011:interface=127.0.0.1" if test_mode else 8011,
+                  plugins=dict(waterfall_view={}, console_view={}, grid_view={}), # TODO: badges
+                  default_page='console',
+                  #logRotateLength=
+                  #maxRotatedFiles=
+                  #versions=
             )
 
+if not test_mode:
+    www_config['auth'] = config.auth.getAuth()
+    www_config['authz'] = config.auth.getAuthz()
+
+c['www'] = www_config
+
 ####### DB URL
 
 c['db'] = {
-    'db_url' : config.options.get('Database', 'db_url'),
+    'db_url' : "sqlite:///state.sqlite" if test_mode else config.options.get('Database', 'db_url'),
 }
 
 ####### RESOURCE USAGE