Merge branch 'image_storage' into 'master'

Image & Storage interfaces

See merge request !2

implementation/image/OpenstackImageManager.py

+from openstack.exceptions import ResourceNotFound
+
+from interface.image.ImageManager import ImageManager
+from interface.image.Image import Image
+
+
+class OpenstackImageManager(ImageManager):
+
+    def __init__(self, openstack) -> None:
+        super().__init__()
+
+        self.openstack = openstack
+
+    @staticmethod
+    def os_image_to_rc_image(os_image):
+        return Image(
+            os_image.id,
+            os_image.name,
+            os_image.disk_format
+        )
+
+    def upload_file(self, name, path, format):
+        os_image = self.openstack.image.create_image(
+            name=name,
+            filename=path,
+            disk_format=format
+        )
+
+        return self.os_image_to_rc_image(os_image)
+
+    def get(self, id):
+        try:
+            os_image = self.openstack.image.get_image(id)
+        except ResourceNotFound:
+            return None
+
+        return self.os_image_to_rc_image(os_image)
+
+    def download(self, id):
+        return self.openstack.image.download_image(id)
+
+    def delete(self, id):
+        try:
+            self.openstack.image.delete_image(id)
+        except ResourceNotFound:
+            return False
+
+        return True
+
+    def list(self):
+        images = []
+
+        for os_image in self.openstack.image.images():
+            images.append(self.os_image_to_rc_image(os_image))
+
+        return images

implementation/storage/OpenstackSnapshotManager.py

+from openstack.exceptions import ResourceNotFound
+
+from interface.storage.Snapshot import Snapshot
+from interface.storage.SnapshotManager import SnapshotManager
+
+
+class OpenstackSnapshotManager(SnapshotManager):
+
+    def __init__(self, os) -> None:
+        super().__init__()
+
+        self.openstack = os
+
+    @staticmethod
+    def os_snapshot_to_rc_snapshot(os_snapshot):
+        return Snapshot(
+            os_snapshot.id,
+            os_snapshot.volume_id,
+            os_snapshot.size,
+            os_snapshot.status,
+            os_snapshot.created_at
+        )
+
+    def create_from_volume(self, id):
+        os_snapshot = self.openstack.block_storage.create_snapshot(volume_id=id)
+
+        return self.os_snapshot_to_rc_snapshot(os_snapshot)
+
+    def get(self, id):
+        try:
+            os_snapshot = self.openstack.block_storage.get_snapshot(id)
+        except ResourceNotFound:
+            return None
+
+        return self.os_snapshot_to_rc_snapshot(os_snapshot)
+
+    def list(self):
+        snapshots = []
+
+        for os_snapshot in self.openstack.block_storage.snapshots():
+            snapshots.append(self.os_snapshot_to_rc_snapshot(os_snapshot))
+
+        return snapshots
+
+    def delete(self, id):
+        try:
+            self.openstack.block_storage.delete_snapshot(id)
+        except ResourceNotFound:
+            return False
+
+        return True

implementation/storage/OpenstackStorageManager.py

+from openstack.exceptions import ResourceNotFound
+
+from interface.storage.StorageManager import StorageManager
+from interface.storage.Volume import Volume
+
+
+class OpenstackStorageManager(StorageManager):
+
+    def __init__(self, openstack) -> None:
+        super().__init__()
+
+        self.openstack = openstack
+
+    @staticmethod
+    def os_volume_to_rc_volume(os_volume):
+        return Volume(
+            os_volume.id,
+            os_volume.image_id,
+            os_volume.size,
+            os_volume.is_bootable,
+            os_volume.status,
+            os_volume.created_at
+        )
+
+    def create(self, size):
+        os_volume = self.openstack.block_storage.create_volume(
+            size=size
+        )
+
+        return self.os_volume_to_rc_volume(os_volume)
+
+    def create_from_image(self, id, size, bootable):
+        os_volume = self.openstack.block_storage.create_volume(
+            image_id=id,
+            size=size,
+            bootable=bootable
+        )
+
+        return self.os_volume_to_rc_volume(os_volume)
+
+    def create_from_snapshot(self, id):
+        os_volume = self.openstack.block_storage.create_volume(
+            snapshot_id=id
+        )
+
+        return self.os_volume_to_rc_volume(os_volume)
+
+    def get(self, id):
+        try:
+            os_volume = self.openstack.block_storage.get_volume(id)
+        except ResourceNotFound:
+            return None
+
+        return self.os_volume_to_rc_volume(os_volume)
+
+    def delete(self, id):
+        try:
+            self.openstack.block_storage.delete_volume(id)
+        except ResourceNotFound:
+            return False
+
+        return True
+
+    def list(self):
+        volumes = []
+
+        for os_volume in self.openstack.block_storage.volumes():
+            volumes.append(self.os_volume_to_rc_volume(os_volume))
+
+        return volumes

interface/image/Image.py

+import json
+
+
+class Image:
+    def __init__(self, id, name, format) -> None:
+        super().__init__()
+
+        self.id = id
+        self.name = name
+        self.format = format
+
+    def __str__(self) -> str:
+        return self.toJSON()
+
+    def toJSON(self):
+        return json.dumps(self.__dict__)

interface/image/ImageManager.py

+class ImageManager:
+    def __init__(self) -> None:
+        super().__init__()
+
+    def upload_file(self, name, path, format):
+        raise NotImplementedError
+
+    def get(self, id):
+        raise NotImplementedError
+
+    def download(self, id):
+        raise NotImplementedError
+
+    def download_to_file(self, id, path):
+        f = open(path, 'wb')
+        f.write(self.download(id))
+        f.close()
+
+    def delete(self, id):
+        raise NotImplementedError
+
+    def list(self):
+        raise NotImplementedError

interface/storage/Snapshot.py

+import json
+
+
+class Snapshot:
+    def __init__(self,
+                 id,
+                 volume_id,
+                 size,
+                 status,
+                 created_at
+                 ) -> None:
+        super().__init__()
+
+        self.id = id
+        self.volume_id = volume_id
+        self.size = size
+        self.status = status
+        self.created_at = created_at
+
+    def __str__(self) -> str:
+        return self.toJSON()
+
+    def toJSON(self):
+        return json.dumps(self.__dict__)

interface/storage/SnapshotManager.py

+class SnapshotManager:
+    def __init__(self) -> None:
+        super().__init__()
+
+    def create_from_volume(self, id):
+        raise NotImplementedError
+
+    def get(self, id):
+        raise NotImplementedError
+
+    def list(self):
+        raise NotImplementedError
+
+    def delete(self, id):
+        raise NotImplementedError

interface/storage/StorageManager.py

+class StorageManager:
+    def __init__(self) -> None:
+        super().__init__()
+
+    def create(self, size):
+        raise NotImplementedError
+
+    def create_from_image(self, id, size, bootable):
+        return NotImplementedError
+
+    def create_from_snapshot(self, id):
+        raise NotImplementedError
+
+    def get(self, id):
+        raise NotImplementedError
+
+    def delete(self, id):
+        raise NotImplementedError
+
+    def list(self):
+        raise NotImplementedError

interface/storage/Volume.py

+import json
+
+
+class Volume:
+    def __init__(self,
+                 id,
+                 image_id,
+                 size,
+                 bootable,
+                 status,
+                 created_at
+                 ) -> None:
+        super().__init__()
+
+        self.id = id
+        self.image_id = image_id
+        self.size = size
+        self.bootable = bootable
+        self.status = status
+        self.created_at = created_at
+
+    def __str__(self) -> str:
+        return self.toJSON()
+
+    def toJSON(self):
+        return json.dumps(self.__dict__)