Split base snapshots_client into v1 and v2

This patch splits the base client into v1 and v2 following the model
from the patch at [1] and also migrates those clients to tempest.lib.

[1] https://review.openstack.org/#/c/359442/

Change-Id: I03c254210aeff80173ced68cfa3f3e36ede10d22
diff --git a/tempest/lib/services/volume/v2/snapshots_client.py b/tempest/lib/services/volume/v2/snapshots_client.py
new file mode 100644
index 0000000..c84e557
--- /dev/null
+++ b/tempest/lib/services/volume/v2/snapshots_client.py
@@ -0,0 +1,181 @@
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from oslo_serialization import jsonutils as json
+from six.moves.urllib import parse as urllib
+
+from tempest.lib.common import rest_client
+from tempest.lib import exceptions as lib_exc
+
+
+class SnapshotsClient(rest_client.RestClient):
+    """Client class to send CRUD Volume V2 API requests."""
+    api_version = "v2"
+    create_resp = 202
+
+    def list_snapshots(self, detail=False, **params):
+        """List all the snapshot.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-blockstorage-v2.html#listSnapshots
+        """
+        url = 'snapshots'
+        if detail:
+            url += '/detail'
+        if params:
+            url += '?%s' % urllib.urlencode(params)
+
+        resp, body = self.get(url)
+        body = json.loads(body)
+        self.expected_success(200, resp.status)
+        return rest_client.ResponseBody(resp, body)
+
+    def show_snapshot(self, snapshot_id):
+        """Returns the details of a single snapshot.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-blockstorage-v2.html#showSnapshot
+        """
+        url = "snapshots/%s" % snapshot_id
+        resp, body = self.get(url)
+        body = json.loads(body)
+        self.expected_success(200, resp.status)
+        return rest_client.ResponseBody(resp, body)
+
+    def create_snapshot(self, **kwargs):
+        """Creates a new snapshot.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-blockstorage-v2.html#createSnapshot
+        """
+        post_body = json.dumps({'snapshot': kwargs})
+        resp, body = self.post('snapshots', post_body)
+        body = json.loads(body)
+        self.expected_success(self.create_resp, resp.status)
+        return rest_client.ResponseBody(resp, body)
+
+    def update_snapshot(self, snapshot_id, **kwargs):
+        """Updates a snapshot.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-blockstorage-v2.html#updateSnapshot
+        """
+        put_body = json.dumps({'snapshot': kwargs})
+        resp, body = self.put('snapshots/%s' % snapshot_id, put_body)
+        body = json.loads(body)
+        self.expected_success(200, resp.status)
+        return rest_client.ResponseBody(resp, body)
+
+    def delete_snapshot(self, snapshot_id):
+        """Delete Snapshot.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-blockstorage-v2.html#deleteSnapshot
+        """
+        resp, body = self.delete("snapshots/%s" % snapshot_id)
+        self.expected_success(202, resp.status)
+        return rest_client.ResponseBody(resp, body)
+
+    def is_resource_deleted(self, id):
+        try:
+            self.show_snapshot(id)
+        except lib_exc.NotFound:
+            return True
+        return False
+
+    @property
+    def resource_type(self):
+        """Returns the primary type of resource this client works with."""
+        return 'volume-snapshot'
+
+    def reset_snapshot_status(self, snapshot_id, status):
+        """Reset the specified snapshot's status."""
+        post_body = json.dumps({'os-reset_status': {"status": status}})
+        resp, body = self.post('snapshots/%s/action' % snapshot_id, post_body)
+        self.expected_success(202, resp.status)
+        return rest_client.ResponseBody(resp, body)
+
+    def update_snapshot_status(self, snapshot_id, **kwargs):
+        """Update the specified snapshot's status."""
+        # TODO(gmann): api-site doesn't contain doc ref
+        # for this API. After fixing the api-site, we need to
+        # add the link here.
+        # Bug https://bugs.launchpad.net/openstack-api-site/+bug/1532645
+
+        post_body = json.dumps({'os-update_snapshot_status': kwargs})
+        url = 'snapshots/%s/action' % snapshot_id
+        resp, body = self.post(url, post_body)
+        self.expected_success(202, resp.status)
+        return rest_client.ResponseBody(resp, body)
+
+    def create_snapshot_metadata(self, snapshot_id, metadata):
+        """Create metadata for the snapshot."""
+        put_body = json.dumps({'metadata': metadata})
+        url = "snapshots/%s/metadata" % snapshot_id
+        resp, body = self.post(url, put_body)
+        body = json.loads(body)
+        self.expected_success(200, resp.status)
+        return rest_client.ResponseBody(resp, body)
+
+    def show_snapshot_metadata(self, snapshot_id):
+        """Get metadata of the snapshot.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-blockstorage-v2.html#
+                              showSnapshotMetadata
+        """
+        url = "snapshots/%s/metadata" % snapshot_id
+        resp, body = self.get(url)
+        body = json.loads(body)
+        self.expected_success(200, resp.status)
+        return rest_client.ResponseBody(resp, body)
+
+    def update_snapshot_metadata(self, snapshot_id, **kwargs):
+        """Update metadata for the snapshot.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-blockstorage-v2.html#
+                              updateSnapshotMetadata
+        """
+        put_body = json.dumps(kwargs)
+        url = "snapshots/%s/metadata" % snapshot_id
+        resp, body = self.put(url, put_body)
+        body = json.loads(body)
+        self.expected_success(200, resp.status)
+        return rest_client.ResponseBody(resp, body)
+
+    def update_snapshot_metadata_item(self, snapshot_id, id, **kwargs):
+        """Update metadata item for the snapshot."""
+        # TODO(piyush): Current api-site doesn't contain this API description.
+        # After fixing the api-site, we need to fix here also for putting the
+        # link to api-site.
+        # LP: https://bugs.launchpad.net/openstack-api-site/+bug/1529064
+        put_body = json.dumps(kwargs)
+        url = "snapshots/%s/metadata/%s" % (snapshot_id, id)
+        resp, body = self.put(url, put_body)
+        body = json.loads(body)
+        self.expected_success(200, resp.status)
+        return rest_client.ResponseBody(resp, body)
+
+    def delete_snapshot_metadata_item(self, snapshot_id, id):
+        """Delete metadata item for the snapshot."""
+        url = "snapshots/%s/metadata/%s" % (snapshot_id, id)
+        resp, body = self.delete(url)
+        self.expected_success(200, resp.status)
+        return rest_client.ResponseBody(resp, body)
+
+    def force_delete_snapshot(self, snapshot_id):
+        """Force Delete Snapshot."""
+        post_body = json.dumps({'os-force_delete': {}})
+        resp, body = self.post('snapshots/%s/action' % snapshot_id, post_body)
+        self.expected_success(202, resp.status)
+        return rest_client.ResponseBody(resp, body)