Added api support for creating container checkpoints

docker/api/container.py

@@ -669,6 +669,93 @@ def create_endpoint_config(self, *args, **kwargs):
         """
         return EndpointConfig(self._version, *args, **kwargs)
 
+    @utils.check_resource('container')
+    def container_checkpoints(self, container, checkpoint_dir=None):
+        """
+        (Experimental) List all container checkpoints.
+
+        Args:
+            container (str): The container to find checkpoints for
+            checkpoint_dir (str): Custom directory in which to search for
+                checkpoints. Default: None (use default checkpoint dir)
+        Returns:
+            List of dicts, one for each checkpoint. In the form of:
+            [{"Name": "<checkpoint_name>"}]
+
+        Raises:
+            :py:class:`docker.errors.APIError`
+                If the server returns an error.
+        """
+        params = {}
+        if checkpoint_dir:
+            params["dir"] = checkpoint_dir
+
+        return self._result(
+            self._get(self._url("/containers/{0}/checkpoints", container),
+                      params=params),
+            True
+        )
+
+    @utils.check_resource('container')
+    def container_remove_checkpoint(self, container, checkpoint,
+                                    checkpoint_dir=None):
+        """
+        (Experimental) Remove container checkpoint.
+
+        Args:
+            container (str): The container the checkpoint belongs to
+            checkpoint (str): The checkpoint ID to remove
+            checkpoint_dir (str): Custom directory in which to search for
+                checkpoints. Default: None (use default checkpoint dir)
+
+        Raises:
+            :py:class:`docker.errors.APIError`
+                If the server returns an error.
+        """
+        params = {}
+        if checkpoint_dir:
+            params["dir"] = checkpoint_dir
+
+        res = self._delete(
+                self._url("/containers/{0}/checkpoints/{1}",
+                          container,
+                          checkpoint),
+                params=params
+        )
+        self._raise_for_status(res)
+
+    @utils.check_resource('container')
+    def container_create_checkpoint(self, container, checkpoint,
+                                    checkpoint_dir=None,
+                                    leave_running=False):
+        """
+        (Experimental) Create new container checkpoint.
+
+        Args:
+            container (str): The container to checkpoint
+            checkpoint (str): The checkpoint ID
+            checkpoint_dir (str): Custom directory in which to place the
+                checkpoint. Default: None (use default checkpoint dir)
+            leave_running (bool): Determines if the container should be left
+                running after the checkpoint is created
+
+        Raises:
+            :py:class:`docker.errors.APIError`
+                If the server returns an error.
+        """
+        data = {
+            "CheckpointID": checkpoint,
+            "Exit": not leave_running,
+        }
+        if checkpoint_dir:
+            data["CheckpointDir"] = checkpoint_dir
+
+        res = self._post_json(
+            self._url("/containers/{0}/checkpoints", container),
+            data=data
+        )
+        self._raise_for_status(res)
+
     @utils.check_resource('container')
     def diff(self, container):
         """
@@ -1103,9 +1190,10 @@ def start(self, container, checkpoint=None, checkpoint_dir=None,
         Args:
             container (str): The container to start
             checkpoint (str): (Experimental) The checkpoint ID from which
-                to start
+                to start. Default: None (do not start from a checkpoint)
             checkpoint_dir (str): (Experimental) Custom directory in which to
-                search for checkpoints
+                search for checkpoints. Default: None (use default
+                checkpoint dir)
 
         Raises:
             :py:class:`docker.errors.APIError`