Refactor mock_cloud methods to simplify and make them more like CommonContainerMixin.

Also make sure that stripping of data arguments for logging is correct for all containers.

Signed-off-by: Daira Hopwood <david-sarah@jacaranda.org>

diff --git a/src/allmydata/storage/backends/cloud/cloud_common.py b/src/allmydata/storage/backends/cloud/cloud_common.py
index 7e41aaa7d3733e69f9011c966d42e84c1bb3f993..fda61e666379b57f25c02d76789b0f07424e5798 100644 (file)
--- a/src/allmydata/storage/backends/cloud/cloud_common.py
+++ b/src/allmydata/storage/backends/cloud/cloud_common.py
@@ -350,16 +350,26 @@ class ContainerRetryMixin:
     """
 
     def _react_to_error(self, response_code):
-        # The default policy is to retry on 5xx errors.
+        """
+        The default policy is to retry on 5xx errors.
+        """
         return response_code >= 500 and response_code < 600
 
+    def _strip_data(self, args):
+        """
+        By default retain only one argument (object_name) for logging.
+        Subclasses should override this if more than one argument is safe to log
+        (we want to avoid logging data).
+        """
+        return args[:1]
+
     def _do_request(self, description, operation, *args, **kwargs):
         d = defer.maybeDeferred(operation, *args, **kwargs)
         def _retry(f):
             d2 = self._handle_error(f, 1, None, description, operation, *args, **kwargs)
             def _trigger_incident(res):
                 log.msg(format="error(s) on cloud container operation: %(description)s %(arguments)s %(kwargs)s %(res)s",
-                        arguments=args[:2], kwargs=kwargs, description=description, res=res,
+                        arguments=self._strip_data(args), kwargs=kwargs, description=description, res=res,
                         level=log.WEIRD)
                 return res
             d2.addBoth(_trigger_incident)
@@ -375,7 +385,7 @@ class ContainerRetryMixin:
         if len(fargs) > 2 and fargs[2] and '<code>signaturedoesnotmatch</code>' in fargs[2].lower():
             fargs = fargs[:2] + ("SignatureDoesNotMatch response redacted",) + fargs[3:]
 
-        args_without_data = args[:2]
+        args_without_data = self._strip_data(args)
         msg = "try %d failed: %s %s %s" % (trynum, description, args_without_data, kwargs)
         err = CloudError(msg, *fargs)
 
@@ -711,6 +721,8 @@ class CommonContainerMixin(HTTPClientMixin, ContainerRetryMixin):
 
     def __init__(self, container_name, override_reactor=None):
         self._container_name = container_name
+
+        # Maybe this should be in HTTPClientMixin?
         self._reactor = override_reactor or reactor
         pool = HTTPConnectionPool(self._reactor)
         pool.maxPersistentPerHost = 20
@@ -727,6 +739,8 @@ class CommonContainerMixin(HTTPClientMixin, ContainerRetryMixin):
         return "%s/%s/%s" % (public_storage_url, urllib.quote(self._container_name, safe=''),
                              urllib.quote(object_name))
 
+    # Consider moving these to ContainerRetryMixin.
+
     def create(self):
         return self._do_request('create container', self._create)
 

diff --git a/src/allmydata/storage/backends/cloud/mock_cloud.py b/src/allmydata/storage/backends/cloud/mock_cloud.py
index 744441f9a747569399ddc95b16df93b4a9a21ec0..e6c333c73d587b1272ec2aa4f382569520251f2e 100644 (file)
--- a/src/allmydata/storage/backends/cloud/mock_cloud.py
+++ b/src/allmydata/storage/backends/cloud/mock_cloud.py
@@ -7,6 +7,7 @@ from allmydata.util.deferredutil import async_iterate
 
 from zope.interface import implements
 
+from allmydata.util.assertutil import _assert
 from allmydata.storage.backends.cloud.cloud_common import IContainer, \
      CloudServiceError, ContainerItem, ContainerListing, \
      ContainerRetryMixin, ContainerListMixin
@@ -61,7 +62,7 @@ class MockContainer(ContainerRetryMixin, ContainerListMixin):
                     sharefile = os.path.join(sidir, shnumstr)
                     yield (sharefile, "%s/%s" % (sikey, shnumstr))
 
-    def _list_some_objects(self, ign, prefix='', marker=None, max_keys=None):
+    def _list_some_objects(self, prefix='', marker=None, max_keys=None):
         if max_keys is None:
             max_keys = MAX_KEYS
         contents = []
@@ -93,53 +94,49 @@ class MockContainer(ContainerRetryMixin, ContainerListMixin):
             raise self.ServiceError("", 404, "not found")
         return sharefile
 
-    def _put_object(self, ign, object_name, data, content_type, metadata):
-        assert content_type is None, content_type
-        assert metadata == {}, metadata
+    def _put_object(self, object_name, data, content_type, metadata):
+        _assert(content_type == 'application/octet-stream', content_type=content_type)
+        _assert(metadata == {}, metadata=metadata)
         sharefile = self._get_path(object_name)
         fileutil.make_dirs(os.path.dirname(sharefile))
         fileutil.write(sharefile, data)
         self._store_count += 1
         return defer.succeed(None)
 
-    def _get_object(self, ign, object_name):
+    def _get_object(self, object_name):
         self._load_count += 1
         data = fileutil.read(self._get_path(object_name, must_exist=True))
         return defer.succeed(data)
 
-    def _head_object(self, ign, object_name):
-        return defer.execute(self._not_implemented)
+    def _head_object(self, object_name):
+        return defer.execute(_not_implemented)
 
-    def _delete_object(self, ign, object_name):
+    def _delete_object(self, object_name):
         fileutil.remove(self._get_path(object_name, must_exist=True))
         return defer.succeed(None)
 
-    def _not_implemented(self):
-        raise NotImplementedError
-
     # methods that use error handling from ContainerRetryMixin
 
     def create(self):
-        return self._do_request('create bucket', self._create, self.container_name)
+        return self._do_request('create bucket', self._create)
 
     def delete(self):
-        return self._do_request('delete bucket', self._delete, self.container_name)
+        return self._do_request('delete bucket', self._delete)
 
     def list_some_objects(self, **kwargs):
-        return self._do_request('list objects', self._list_some_objects, self.container_name, **kwargs)
+        return self._do_request('list objects', self._list_some_objects, **kwargs)
 
-    def put_object(self, object_name, data, content_type=None, metadata={}):
-        return self._do_request('PUT object', self._put_object, self.container_name, object_name,
-                                data, content_type, metadata)
+    def put_object(self, object_name, data, content_type='application/octet-stream', metadata={}):
+        return self._do_request('PUT object', self._put_object, object_name, data, content_type, metadata)
 
     def get_object(self, object_name):
-        return self._do_request('GET object', self._get_object, self.container_name, object_name)
+        return self._do_request('GET object', self._get_object, object_name)
 
     def head_object(self, object_name):
-        return self._do_request('HEAD object', self._head_object, self.container_name, object_name)
+        return self._do_request('HEAD object', self._head_object, object_name)
 
     def delete_object(self, object_name):
-        return self._do_request('DELETE object', self._delete_object, self.container_name, object_name)
+        return self._do_request('DELETE object', self._delete_object, object_name)
 
     def reset_load_store_counts(self):
         self._load_count = 0

diff --git a/src/allmydata/storage/backends/cloud/s3/s3_container.py b/src/allmydata/storage/backends/cloud/s3/s3_container.py
index 3391300aee4f48f0edde07a1bf3805180b129d0c..84b9edb93ce8cca52b0c37ec36f77ed4b7836db9 100644 (file)
--- a/src/allmydata/storage/backends/cloud/s3/s3_container.py
+++ b/src/allmydata/storage/backends/cloud/s3/s3_container.py
@@ -55,6 +55,10 @@ class S3Container(ContainerRetryMixin, ContainerListMixin):
     def __repr__(self):
         return ("<%s %r>" % (self.__class__.__name__, self.container_name,))
 
+    def _strip_data(self, args):
+        # Retain up to two arguments (container_name and object_name) for logging.
+        return args[:2]
+
     def create(self):
         return self._do_request('create bucket', self.client.create_bucket, self.container_name)
 

diff --git a/src/allmydata/test/test_storage.py b/src/allmydata/test/test_storage.py
index 72189f0089f5d524e5caed3f550c9fe1ebdeb0cd..239f33ba7faec7d78d0a0c1e8cf69e326cca9774 100644 (file)
--- a/src/allmydata/test/test_storage.py
+++ b/src/allmydata/test/test_storage.py
@@ -381,9 +381,9 @@ class CloudCommon(unittest.TestCase, ShouldFailMixin, WorkdirMixin):
         fileutil.make_dirs(basedir)
 
         class BadlyTruncatingMockContainer(MockContainer):
-            def _list_some_objects(self, container_name, prefix='', marker=None):
+            def _list_some_objects(self, prefix='', marker=None):
                 contents = [ContainerItem("", None, "", 0, None, None)]
-                return defer.succeed(ContainerListing(container_name, "", "", 0, "true", contents))
+                return defer.succeed(ContainerListing(self.container_name, "", "", 0, "true", contents))
 
         s = {"level": 0}
         def call_log_msg(*args, **kwargs):
@@ -2799,12 +2799,12 @@ class ServerWithMockCloudBackend(WithMockCloudBackend, ServerTest, unittest.Test
 
         t = {'count': 0}
         old_put_object = MockContainer._put_object
-        def call_put_object(self, ign, object_name, data, content_type=None, metadata={}):
+        def call_put_object(self, object_name, data, content_type=None, metadata={}):
             t['count'] += 1
             if t['count'] <= failure_count:
                 return defer.fail(CloudServiceError("XML", 500, "Internal error", "response"))
             else:
-                return old_put_object(self, ign, object_name, data, content_type=content_type, metadata=metadata)
+                return old_put_object(self, object_name, data, content_type=content_type, metadata=metadata)
         self.patch(MockContainer, '_put_object', call_put_object)
 
         def call_log_msg(*args, **kwargs):