Rename backup to image

As per IRC conversation, backup should be image so it can mean backup
or restore since they will basically be inverses of each other.

Change-Id: Ic0d14cc7bfa9071bf45d70b0731e02c106b58277

ekko/image/_drivers/raw.py

@@ -12,18 +12,18 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from ekko.backup import backend
+from ekko.image import drivers
 
 
-class RawBackup(backend.BaseBackup):
+class RawImage(drivers.BaseImage):
 
     def get_data(self, reads):
-        with open(self.backup_location, 'rb') as f:
+        with open(self.image_location, 'rb') as f:
             for start, size in reads:
                 f.seek(start, 0)
                 yield (start, f.read(size))
 
     def get_size(self):
-        with open(self.backup_location, 'rb') as f:
+        with open(self.image_location, 'rb') as f:
             f.seek(0, 2)
             return f.tell()

ekko/image/drivers.py

@@ -18,14 +18,14 @@ import six
 
 
 @six.add_metaclass(abc.ABCMeta)
-class BaseBackup(object):
-    """Base class for Backup drivers
+class BaseImage(object):
+    """Base class for Image drivers
 
-    :params backup_location: Location of device or file to backup
+    :params image_location: Location of device or file to image
     """
 
-    def __init__(self, backup_location):
-        self.backup_location = backup_location
+    def __init__(self, image_location):
+        self.image_location = image_location
 
     @abc.abstractmethod
     def get_data(self, reads):

setup.cfg

@@ -20,9 +20,8 @@ classifier =
     Programming Language :: Python :: 3.4
 
 [entry_points]
-ekko.backup.backend =
-    raw = ekko.backup._backend.raw:RawBackup
-    qcow2 = ekko.backup._backend.qcow2:QCOW2Backup
+ekko.image.drivers =
+    raw = ekko.image._drivers.raw:RawImage
 ekko.manifest.drivers =
     osdk = ekko.manifest._drivers.osdk:OSDKManifest
     sqlite = ekko.manifest._drivers.sqlite:SQLiteManifest

tools/backup.py

@@ -95,8 +95,8 @@ def main():
         invoke_args=[args.manifest]
     ).driver
 
-    disk_backend = driver.DriverManager(
-        namespace='ekko.backup.backend',
+    image = driver.DriverManager(
+        namespace='ekko.image.drivers',
         name=args.backend,
         invoke_on_load=True,
         invoke_args=[args.backup]
@@ -109,7 +109,7 @@ def main():
         invoke_args=[args.location]
     ).driver
 
-    size_of_disk = disk_backend.get_size()
+    size_of_disk = image.get_size()
     incremental = 0
     metadata = manifest_structure.Metadata(incremental, size_of_disk)
 
@@ -118,7 +118,7 @@ def main():
 
     segments_list = list(range(0, int(math.ceil(
         float(size_of_disk)/metadata.segment_size))))
-    data_segments = read_segments(segments_list, metadata, disk_backend)
+    data_segments = read_segments(segments_list, metadata, image)
 
     segments = [
         storage.put_data(data_segment) for data_segment in data_segments