Using a default bucket instead of bucket name in storage.

This is in preparation for using the default bucket in the
Blob constructor.

Author: dhermes

gcloud/storage/__init__.py

@@ -41,6 +41,7 @@
 
 from gcloud import credentials
 from gcloud.storage import _implicit_environ
+from gcloud.storage.bucket import Bucket
 from gcloud.storage.connection import Connection
 
 
@@ -52,23 +53,30 @@
 _PROJECT_ENV_VAR_NAME = 'GCLOUD_PROJECT'
 
 
-def set_default_bucket_name(bucket_name=None):
-    """Set default bucket name either explicitly or implicitly as fall-back.
+def set_default_bucket(bucket=None):
+    """Set default bucket either explicitly or implicitly as fall-back.
 
     In implicit case, currently only supports enviroment variable but will
     support App Engine, Compute Engine and other environments in the future.
 
+    In the implicit case, relies on an implicit connection in addition to the
+    implicit bucket name.
+
     Local environment variable used is:
     - GCLOUD_BUCKET_NAME
 
-    :type bucket_name: string
-    :param bucket_name: Optional. The bucket name to use as default.
+    :type bucket: :class:`gcloud.storage.bucket.Bucket`
+    :param bucket: Optional. The bucket to use as default.
     """
-    if bucket_name is None:
+    if bucket is None:
         bucket_name = os.getenv(_BUCKET_ENV_VAR_NAME)
+        connection = _implicit_environ.CONNECTION
 
-    if bucket_name is not None:
-        _implicit_environ.BUCKET_NAME = bucket_name
+        if bucket_name is not None and connection is not None:
+            bucket = Bucket(connection=connection, name=bucket_name)
+
+    if bucket is not None:
+        _implicit_environ.BUCKET = bucket
 
 
 def set_default_project(project=None):
@@ -96,7 +104,7 @@ def set_default_connection(project=None, connection=None):
     :type project: string
     :param project: Optional. The name of the project to connect to.
 
-    :type connection: :class:`gcloud.datastore.connection.Connection`
+    :type connection: :class:`gcloud.storage.connection.Connection`
     :param connection: A connection provided to be the default.
     """
     if project is None:
@@ -106,25 +114,27 @@ def set_default_connection(project=None, connection=None):
     _implicit_environ.CONNECTION = connection
 
 
-def set_defaults(bucket_name=None, project=None, connection=None):
+def set_defaults(bucket=None, project=None, connection=None):
     """Set defaults either explicitly or implicitly as fall-back.
 
     Uses the arguments to call the individual default methods.
 
-    :type bucket_name: string
-    :param bucket_name: Optional. The bucket name to use as default.
+    :type bucket: :class:`gcloud.storage.bucket.Bucket`
+    :param bucket: Optional. The bucket to use as default.
 
     :type project: string
     :param project: Optional. The name of the project to connect to.
 
-    :type connection: :class:`gcloud.datastore.connection.Connection`
-    :param connection: A connection provided to be the default.
+    :type connection: :class:`gcloud.storage.connection.Connection`
+    :param connection: Optional. A connection provided to be the default.
     """
-    set_default_bucket_name(bucket_name=bucket_name)
     # NOTE: `set_default_project` is called before `set_default_connection`
     #       since `set_default_connection` falls back to implicit project.
     set_default_project(project=project)
     set_default_connection(project=project, connection=connection)
+    # NOTE: `set_default_bucket` is called after `set_default_connection`
+    #       since `set_default_bucket` falls back to implicit connection.
+    set_default_bucket(bucket=bucket)
 
 
 def get_connection(project):

gcloud/storage/_implicit_environ.py

@@ -22,8 +22,8 @@
 PROJECT = None
 """Module global to allow persistent implied project from enviroment."""
 
-BUCKET_NAME = None
-"""Module global to allow persistent implied bucket name from enviroment."""
+BUCKET = None
+"""Module global to allow persistent implied bucket from enviroment."""
 
 CONNECTION = None
 """Module global to allow persistent implied connection from enviroment."""

gcloud/storage/test___init__.py

@@ -71,68 +71,87 @@ def get_connection(*args, **kw):
         self.assertEqual(connection._called_with, BUCKET)
 
 
-class Test_set_default_bucket_name(unittest2.TestCase):
+class Test_set_default_bucket(unittest2.TestCase):
 
     def setUp(self):
         from gcloud.storage import _implicit_environ
-        self._replaced_bucket_name = _implicit_environ.BUCKET_NAME
-        _implicit_environ.BUCKET_NAME = None
+        self._replaced_bucket = _implicit_environ.BUCKET
+        _implicit_environ.BUCKET = None
 
     def tearDown(self):
         from gcloud.storage import _implicit_environ
-        _implicit_environ.BUCKET_NAME = self._replaced_bucket_name
+        _implicit_environ.BUCKET = self._replaced_bucket
 
-    def _callFUT(self, bucket_name=None):
-        from gcloud.storage import set_default_bucket_name
-        return set_default_bucket_name(bucket_name=bucket_name)
+    def _callFUT(self, bucket=None):
+        from gcloud.storage import set_default_bucket
+        return set_default_bucket(bucket=bucket)
 
-    def _monkey(self, implicit_bucket_name):
+    def _monkey(self, implicit_bucket_name, connection=None):
+        from contextlib import nested
         import os
-        from gcloud.storage import _BUCKET_ENV_VAR_NAME
+
         from gcloud._testing import _Monkey
+        from gcloud.storage import _BUCKET_ENV_VAR_NAME
+        from gcloud.storage import _implicit_environ
+
         environ = {_BUCKET_ENV_VAR_NAME: implicit_bucket_name}
-        return _Monkey(os, getenv=environ.get)
+        return nested(_Monkey(os, getenv=environ.get),
+                      _Monkey(_implicit_environ, CONNECTION=connection))
 
     def test_no_env_var_set(self):
         from gcloud.storage import _implicit_environ
         with self._monkey(None):
             self._callFUT()
-        self.assertEqual(_implicit_environ.BUCKET_NAME, None)
+        self.assertEqual(_implicit_environ.BUCKET, None)
 
     def test_set_from_env_var(self):
         from gcloud.storage import _implicit_environ
         IMPLICIT_BUCKET_NAME = 'IMPLICIT'
-        with self._monkey(IMPLICIT_BUCKET_NAME):
+        CONNECTION = object()
+        with self._monkey(IMPLICIT_BUCKET_NAME, connection=CONNECTION):
             self._callFUT()
-        self.assertEqual(_implicit_environ.BUCKET_NAME, IMPLICIT_BUCKET_NAME)
+
+        self.assertEqual(_implicit_environ.BUCKET.name, IMPLICIT_BUCKET_NAME)
+        self.assertEqual(_implicit_environ.BUCKET.connection, CONNECTION)
 
     def test_set_explicit_w_env_var_set(self):
         from gcloud.storage import _implicit_environ
-        EXPLICIT_BUCKET_NAME = 'EXPLICIT'
+        EXPLICIT_BUCKET = object()
         with self._monkey(None):
-            self._callFUT(EXPLICIT_BUCKET_NAME)
-        self.assertEqual(_implicit_environ.BUCKET_NAME, EXPLICIT_BUCKET_NAME)
+            self._callFUT(EXPLICIT_BUCKET)
+        self.assertEqual(_implicit_environ.BUCKET, EXPLICIT_BUCKET)
 
     def test_set_explicit_no_env_var_set(self):
         from gcloud.storage import _implicit_environ
         IMPLICIT_BUCKET_NAME = 'IMPLICIT'
-        EXPLICIT_BUCKET_NAME = 'EXPLICIT'
-        with self._monkey(IMPLICIT_BUCKET_NAME):
-            self._callFUT(EXPLICIT_BUCKET_NAME)
-        self.assertEqual(_implicit_environ.BUCKET_NAME, EXPLICIT_BUCKET_NAME)
+        CONNECTION = object()
+        EXPLICIT_BUCKET = object()
+        with self._monkey(IMPLICIT_BUCKET_NAME, connection=CONNECTION):
+            self._callFUT(EXPLICIT_BUCKET)
+        self.assertEqual(_implicit_environ.BUCKET, EXPLICIT_BUCKET)
 
     def test_set_explicit_None_wo_env_var_set(self):
         from gcloud.storage import _implicit_environ
-        with self._monkey(None):
+        CONNECTION = object()
+        with self._monkey(None, connection=CONNECTION):
+            self._callFUT(None)
+        self.assertEqual(_implicit_environ.BUCKET, None)
+
+    def test_set_explicit_None_wo_connection_set(self):
+        from gcloud.storage import _implicit_environ
+        IMPLICIT_BUCKET_NAME = 'IMPLICIT'
+        with self._monkey(IMPLICIT_BUCKET_NAME, connection=None):
             self._callFUT(None)
-        self.assertEqual(_implicit_environ.BUCKET_NAME, None)
+        self.assertEqual(_implicit_environ.BUCKET, None)
 
     def test_set_explicit_None_w_env_var_set(self):
         from gcloud.storage import _implicit_environ
         IMPLICIT_BUCKET_NAME = 'IMPLICIT'
-        with self._monkey(IMPLICIT_BUCKET_NAME):
+        CONNECTION = object()
+        with self._monkey(IMPLICIT_BUCKET_NAME, connection=CONNECTION):
             self._callFUT(None)
-        self.assertEqual(_implicit_environ.BUCKET_NAME, IMPLICIT_BUCKET_NAME)
+        self.assertEqual(_implicit_environ.BUCKET.name, IMPLICIT_BUCKET_NAME)
+        self.assertEqual(_implicit_environ.BUCKET.connection, CONNECTION)
 
 
 class Test_set_default_project(unittest2.TestCase):
@@ -299,23 +318,23 @@ def mock_get_connection(*args, **kwargs):
 
 class Test_set_defaults(unittest2.TestCase):
 
-    def _callFUT(self, bucket_name=None, project=None, connection=None):
+    def _callFUT(self, bucket=None, project=None, connection=None):
         from gcloud.storage import set_defaults
-        return set_defaults(bucket_name=bucket_name, project=project,
+        return set_defaults(bucket=bucket, project=project,
                             connection=connection)
 
     def test_it(self):
         from gcloud._testing import _Monkey
         from gcloud import storage
 
-        BUCKET_NAME = object()
+        BUCKET = object()
         PROJECT = object()
         CONNECTION = object()
 
-        SET_BUCKET_NAME_CALLED = []
+        SET_BUCKET_CALLED = []
 
-        def call_set_bucket_name(bucket_name=None):
-            SET_BUCKET_NAME_CALLED.append(bucket_name)
+        def call_set_bucket(bucket=None):
+            SET_BUCKET_CALLED.append(bucket)
 
         SET_PROJECT_CALLED = []
 
@@ -327,12 +346,12 @@ def call_set_project(project=None):
         def call_set_connection(project=None, connection=None):
             SET_CONNECTION_CALLED.append((project, connection))
 
-        with _Monkey(storage, set_default_bucket_name=call_set_bucket_name,
+        with _Monkey(storage, set_default_bucket=call_set_bucket,
                      set_default_connection=call_set_connection,
                      set_default_project=call_set_project):
-            self._callFUT(bucket_name=BUCKET_NAME, project=PROJECT,
+            self._callFUT(bucket=BUCKET, project=PROJECT,
                           connection=CONNECTION)
 
-        self.assertEqual(SET_BUCKET_NAME_CALLED, [BUCKET_NAME])
         self.assertEqual(SET_PROJECT_CALLED, [PROJECT])
         self.assertEqual(SET_CONNECTION_CALLED, [(PROJECT, CONNECTION)])
+        self.assertEqual(SET_BUCKET_CALLED, [BUCKET])