Add prune_networks method

Ensure all integration tests use the same version of the busybox image
Signed-off-by: Joffrey F <joffrey@docker.com>

docker/api/network.py

@@ -133,6 +133,28 @@ class NetworkApiMixin(object):
         res = self._post_json(url, data=data)
         return self._result(res, json=True)
 
+    @minimum_version('1.25')
+    def prune_networks(self, filters=None):
+        """
+        Delete unused networks
+
+        Args:
+            filters (dict): Filters to process on the prune list.
+
+        Returns:
+            (dict): A dict containing a list of deleted network names and
+                the amount of disk space reclaimed in bytes.
+
+        Raises:
+            :py:class:`docker.errors.APIError`
+                If the server returns an error.
+        """
+        params = {}
+        if filters:
+            params['filters'] = utils.convert_filters(filters)
+        url = self._url('/networks/prune')
+        return self._result(self._post(url, params=params), True)
+
     @minimum_version('1.21')
     def remove_network(self, net_id):
         """

docker/models/networks.py

+from ..api import APIClient
 from .containers import Container
 from .resource import Model, Collection
 
@@ -180,3 +181,7 @@ class NetworkCollection(Collection):
         """
         resp = self.client.api.networks(*args, **kwargs)
         return [self.prepare_model(item) for item in resp]
+
+    def prune(self, filters=None):
+        self.client.api.prune_networks(filters=filters)
+    prune.__doc__ = APIClient.prune_networks.__doc__

tests/integration/api_image_test.py

@@ -295,9 +295,23 @@ class PruneImagesTest(BaseAPIIntegrationTest):
             self.client.remove_image('hello-world')
         except docker.errors.APIError:
             pass
+
+        # Ensure busybox does not get pruned
+        ctnr = self.client.create_container(BUSYBOX, ['sleep', '9999'])
+        self.tmp_containers.append(ctnr)
+
         self.client.pull('hello-world')
         self.tmp_imgs.append('hello-world')
         img_id = self.client.inspect_image('hello-world')['Id']
         result = self.client.prune_images()
-        assert img_id in [img['Deleted'] for img in result['ImagesDeleted']]
+        assert img_id not in [
+            img.get('Deleted') for img in result['ImagesDeleted']
+        ]
+        result = self.client.prune_images({'dangling': False})
         assert result['SpaceReclaimed'] > 0
+        assert 'hello-world:latest' in [
+            img.get('Untagged') for img in result['ImagesDeleted']
+        ]
+        assert img_id in [
+            img.get('Deleted') for img in result['ImagesDeleted']
+        ]

tests/integration/api_network_test.py

@@ -3,7 +3,7 @@ from docker.types import IPAMConfig, IPAMPool
 import pytest
 
 from ..helpers import random_name, requires_api_version
-from .base import BaseAPIIntegrationTest
+from .base import BaseAPIIntegrationTest, BUSYBOX
 
 
 class TestNetworks(BaseAPIIntegrationTest):
@@ -100,7 +100,7 @@ class TestNetworks(BaseAPIIntegrationTest):
     def test_connect_and_disconnect_container(self):
         net_name, net_id = self.create_network()
 
-        container = self.client.create_container('busybox', 'top')
+        container = self.client.create_container(BUSYBOX, 'top')
         self.tmp_containers.append(container)
         self.client.start(container)
 
@@ -128,7 +128,7 @@ class TestNetworks(BaseAPIIntegrationTest):
     def test_connect_and_force_disconnect_container(self):
         net_name, net_id = self.create_network()
 
-        container = self.client.create_container('busybox', 'top')
+        container = self.client.create_container(BUSYBOX, 'top')
         self.tmp_containers.append(container)
         self.client.start(container)
 
@@ -155,7 +155,7 @@ class TestNetworks(BaseAPIIntegrationTest):
     def test_connect_with_aliases(self):
         net_name, net_id = self.create_network()
 
-        container = self.client.create_container('busybox', 'top')
+        container = self.client.create_container(BUSYBOX, 'top')
         self.tmp_containers.append(container)
         self.client.start(container)
 
@@ -173,7 +173,7 @@ class TestNetworks(BaseAPIIntegrationTest):
         net_name, net_id = self.create_network()
 
         container = self.client.create_container(
-            image='busybox',
+            image=BUSYBOX,
             command='top',
             host_config=self.client.create_host_config(network_mode=net_name),
         )
@@ -194,7 +194,7 @@ class TestNetworks(BaseAPIIntegrationTest):
         net_name, net_id = self.create_network()
 
         container = self.client.create_container(
-            image='busybox',
+            image=BUSYBOX,
             command='top',
             host_config=self.client.create_host_config(
                 network_mode=net_name,
@@ -224,7 +224,7 @@ class TestNetworks(BaseAPIIntegrationTest):
             ),
         )
         container = self.client.create_container(
-            image='busybox', command='top',
+            image=BUSYBOX, command='top',
             host_config=self.client.create_host_config(network_mode=net_name),
             networking_config=self.client.create_networking_config({
                 net_name: self.client.create_endpoint_config(
@@ -253,7 +253,7 @@ class TestNetworks(BaseAPIIntegrationTest):
             ),
         )
         container = self.client.create_container(
-            image='busybox', command='top',
+            image=BUSYBOX, command='top',
             host_config=self.client.create_host_config(network_mode=net_name),
             networking_config=self.client.create_networking_config({
                 net_name: self.client.create_endpoint_config(
@@ -276,7 +276,7 @@ class TestNetworks(BaseAPIIntegrationTest):
     @requires_api_version('1.24')
     def test_create_with_linklocal_ips(self):
         container = self.client.create_container(
-            'busybox', 'top',
+            BUSYBOX, 'top',
             networking_config=self.client.create_networking_config(
                 {
                     'bridge': self.client.create_endpoint_config(
@@ -453,3 +453,9 @@ class TestNetworks(BaseAPIIntegrationTest):
         _, net_id = self.create_network(driver='overlay', attachable=True)
         net = self.client.inspect_network(net_id)
         assert net['Attachable'] is True
+
+    @requires_api_version('1.25')
+    def test_prune_networks(self):
+        net_name, _ = self.create_network()
+        result = self.client.prune_networks()
+        assert net_name in result['NetworksDeleted']

tests/integration/api_service_test.py

@@ -3,7 +3,7 @@ import random
 import docker
 
 from ..helpers import force_leave_swarm, requires_api_version
-from .base import BaseAPIIntegrationTest
+from .base import BaseAPIIntegrationTest, BUSYBOX
 
 
 class ServiceTest(BaseAPIIntegrationTest):
@@ -31,7 +31,7 @@ class ServiceTest(BaseAPIIntegrationTest):
             name = self.get_service_name()
 
         container_spec = docker.types.ContainerSpec(
-            'busybox', ['echo', 'hello']
+            BUSYBOX, ['echo', 'hello']
         )
         task_tmpl = docker.types.TaskTemplate(container_spec)
         return name, self.client.create_service(task_tmpl, name=name)
@@ -81,7 +81,7 @@ class ServiceTest(BaseAPIIntegrationTest):
 
     def test_create_service_custom_log_driver(self):
         container_spec = docker.types.ContainerSpec(
-            'busybox', ['echo', 'hello']
+            BUSYBOX, ['echo', 'hello']
         )
         log_cfg = docker.types.DriverConfig('none')
         task_tmpl = docker.types.TaskTemplate(
@@ -99,7 +99,7 @@ class ServiceTest(BaseAPIIntegrationTest):
     def test_create_service_with_volume_mount(self):
         vol_name = self.get_service_name()
         container_spec = docker.types.ContainerSpec(
-            'busybox', ['ls'],
+            BUSYBOX, ['ls'],
             mounts=[
                 docker.types.Mount(target='/test', source=vol_name)
             ]
@@ -119,7 +119,7 @@ class ServiceTest(BaseAPIIntegrationTest):
         assert mount['Type'] == 'volume'
 
     def test_create_service_with_resources_constraints(self):
-        container_spec = docker.types.ContainerSpec('busybox', ['true'])
+        container_spec = docker.types.ContainerSpec(BUSYBOX, ['true'])
         resources = docker.types.Resources(
             cpu_limit=4000000, mem_limit=3 * 1024 * 1024 * 1024,
             cpu_reservation=3500000, mem_reservation=2 * 1024 * 1024 * 1024
@@ -139,7 +139,7 @@ class ServiceTest(BaseAPIIntegrationTest):
         ]
 
     def test_create_service_with_update_config(self):
-        container_spec = docker.types.ContainerSpec('busybox', ['true'])
+        container_spec = docker.types.ContainerSpec(BUSYBOX, ['true'])
         task_tmpl = docker.types.TaskTemplate(container_spec)
         update_config = docker.types.UpdateConfig(
             parallelism=10, delay=5, failure_action='pause'
@@ -173,7 +173,7 @@ class ServiceTest(BaseAPIIntegrationTest):
         assert update_config['MaxFailureRatio'] == uc['MaxFailureRatio']
 
     def test_create_service_with_restart_policy(self):
-        container_spec = docker.types.ContainerSpec('busybox', ['true'])
+        container_spec = docker.types.ContainerSpec(BUSYBOX, ['true'])
         policy = docker.types.RestartPolicy(
             docker.types.RestartPolicy.condition_types.ANY,
             delay=5, max_attempts=5
@@ -196,7 +196,7 @@ class ServiceTest(BaseAPIIntegrationTest):
             'dockerpytest_2', driver='overlay', ipam={'Driver': 'default'}
         )
         self.tmp_networks.append(net2['Id'])
-        container_spec = docker.types.ContainerSpec('busybox', ['true'])
+        container_spec = docker.types.ContainerSpec(BUSYBOX, ['true'])
         task_tmpl = docker.types.TaskTemplate(container_spec)
         name = self.get_service_name()
         svc_id = self.client.create_service(
@@ -212,7 +212,7 @@ class ServiceTest(BaseAPIIntegrationTest):
 
     def test_create_service_with_placement(self):
         node_id = self.client.nodes()[0]['ID']
-        container_spec = docker.types.ContainerSpec('busybox', ['true'])
+        container_spec = docker.types.ContainerSpec(BUSYBOX, ['true'])
         task_tmpl = docker.types.TaskTemplate(
             container_spec, placement=['node.id=={}'.format(node_id)]
         )
@@ -224,7 +224,7 @@ class ServiceTest(BaseAPIIntegrationTest):
                 {'Constraints': ['node.id=={}'.format(node_id)]})
 
     def test_create_service_with_endpoint_spec(self):
-        container_spec = docker.types.ContainerSpec('busybox', ['true'])
+        container_spec = docker.types.ContainerSpec(BUSYBOX, ['true'])
         task_tmpl = docker.types.TaskTemplate(container_spec)
         name = self.get_service_name()
         endpoint_spec = docker.types.EndpointSpec(ports={
@@ -255,7 +255,7 @@ class ServiceTest(BaseAPIIntegrationTest):
 
     def test_create_service_with_env(self):
         container_spec = docker.types.ContainerSpec(
-            'busybox', ['true'], env={'DOCKER_PY_TEST': 1}
+            BUSYBOX, ['true'], env={'DOCKER_PY_TEST': 1}
         )
         task_tmpl = docker.types.TaskTemplate(
             container_spec,
@@ -271,7 +271,7 @@ class ServiceTest(BaseAPIIntegrationTest):
 
     def test_create_service_global_mode(self):
         container_spec = docker.types.ContainerSpec(
-            'busybox', ['echo', 'hello']
+            BUSYBOX, ['echo', 'hello']
         )
         task_tmpl = docker.types.TaskTemplate(container_spec)
         name = self.get_service_name()
@@ -284,7 +284,7 @@ class ServiceTest(BaseAPIIntegrationTest):
 
     def test_create_service_replicated_mode(self):
         container_spec = docker.types.ContainerSpec(
-            'busybox', ['echo', 'hello']
+            BUSYBOX, ['echo', 'hello']
         )
         task_tmpl = docker.types.TaskTemplate(container_spec)
         name = self.get_service_name()

tests/integration/base.py

@@ -81,7 +81,7 @@ class BaseAPIIntegrationTest(BaseIntegrationTest):
 
         return container
 
-    def create_and_start(self, image='busybox', command='top', **kwargs):
+    def create_and_start(self, image=BUSYBOX, command='top', **kwargs):
         container = self.client.create_container(
             image=image, command=command, **kwargs)
         self.tmp_containers.append(container)