qa/rgw: add rgw_multisite_tests task to run tests

Signed-off-by: Casey Bodley <cbodley@redhat.com>

qa/tasks/rgw_multisite_tests.py

@@ -0,0 +1,88 @@
+"""
+rgw multisite testing
+"""
+import logging
+import sys
+import nose.core
+import nose.config
+
+from teuthology.exceptions import ConfigError
+from teuthology.task import Task
+from teuthology import misc
+
+from rgw_multi import multisite, tests
+
+log = logging.getLogger(__name__)
+
+class RGWMultisiteTests(Task):
+    """
+    Runs the rgw_multi tests against a multisite configuration created by the
+    rgw-multisite task. Tests are run with nose, using any additional 'args'
+    provided.
+
+        - rgw-multisite-tests:
+            args:
+            - tasks.rgw_multi.tests:test_object_sync
+
+    """
+    def __init__(self, ctx, config):
+        super(RGWMultisiteTests, self).__init__(ctx, config)
+
+    def setup(self):
+        super(RGWMultisiteTests, self).setup()
+
+        if not self.ctx.rgw_multisite:
+            raise ConfigError('rgw-multisite-tests must run after the rgw-multisite task')
+        realm = self.ctx.rgw_multisite.realm
+        master_zone = realm.meta_master_zone()
+
+        # create the test user
+        log.info('creating test user..')
+        user = multisite.User('rgw-multisite-test-user')
+        user.create(master_zone, ['--display-name', 'Multisite Test User',
+                                  '--gen-access-key', '--gen-secret'])
+
+        tests.init_multi(realm, user)
+        tests.realm_meta_checkpoint(realm)
+
+        overrides = self.ctx.config.get('overrides', {})
+        misc.deep_merge(self.config, overrides.get('rgw-multisite-tests', {}))
+
+    def begin(self):
+        # extra arguments for nose can be passed as a string or list
+        extra_args = self.config.get('args', [])
+        if not isinstance(extra_args, list):
+            extra_args = [extra_args]
+        argv = [__name__] + extra_args
+
+        log.info("running rgw multisite tests on '%s' with args=%r",
+                 tests.__name__, extra_args)
+
+        # run nose tests in the rgw_multi.tests module
+        conf = nose.config.Config(stream=get_log_stream(), verbosity=2)
+        result = nose.run(defaultTest=tests.__name__, argv=argv, config=conf)
+        if not result:
+            raise RuntimeError('rgw multisite test failures')
+
+def get_log_stream():
+    """ return a log stream for nose output """
+    # XXX: this is a workaround for IOErrors when nose writes to stderr,
+    # copied from vstart_runner.py
+    class LogStream(object):
+        def __init__(self):
+            self.buffer = ""
+
+        def write(self, data):
+            self.buffer += data
+            if "\n" in self.buffer:
+                lines = self.buffer.split("\n")
+                for line in lines[:-1]:
+                    log.info(line)
+                self.buffer = lines[-1]
+
+        def flush(self):
+            pass
+
+    return LogStream()
+
+task = RGWMultisiteTests