diff --git a/cloud/docker/docker_service.py b/cloud/docker/docker_service.py index 136a6f1cb19..9e236a2bd85 100644 --- a/cloud/docker/docker_service.py +++ b/cloud/docker/docker_service.py @@ -115,6 +115,15 @@ options: type: bool required: false default: true + pull: + description: + - Use with state I(present) to always pull images prior to starting the application. + - Same as running docker-compose pull. + - When a new image is pulled, services using the image will be recreated unless C(recreate) is I(never). + type: bool + required: false + default: false + version_added: "2.2" remove_images: description: - Use with state I(absent) to remove the all images or only local images. @@ -465,6 +474,7 @@ class ContainerManager(DockerBaseClass): self.services = None self.scale = None self.debug = None + self.pull = None for key, value in client.module.params.items(): setattr(self, key, value) @@ -576,13 +586,17 @@ class ContainerManager(DockerBaseClass): converge = convergence_strategy_from_opts(up_options) self.log("convergence strategy: %s" % converge) + if self.pull: + result.update(self.cmd_pull()) + for service in self.project.services: if not service_names or service.name in service_names: plan = service.convergence_plan(strategy=converge) if plan.action != 'noop': result['changed'] = True if self.debug or self.check_mode: - result['actions'][service.name] = dict() + if not result['actions'].get(service.name): + result['actions'][service.name] = dict() result['actions'][service.name][plan.action] = [] for container in plan.containers: result['actions'][service.name][plan.action].append(dict( @@ -669,6 +683,40 @@ class ContainerManager(DockerBaseClass): return result + def cmd_pull(self): + result = dict( + changed=False, + actions=dict(), + ) + + if not self.check_mode: + for service in self.project.get_services(self.services, include_deps=False): + self.log('Pulling image for service %s' % service.name) + # store the existing image ID + image = service.image() + old_image_id = None + if image and image.get('Id'): + old_image_id = image['Id'] + + # pull the image + service.pull(ignore_pull_failures=False) + + # store the new image ID + image = service.image() + new_image_id = None + if image and image.get('Id'): + new_image_id = image['Id'] + + if new_image_id != old_image_id: + # if a new image was pulled + result['changed'] = True + result['actions'][service.name] = dict() + result['actions'][service.name]['pulled_image'] = dict( + name=service.image_name, + id=service.image()['Id'] + ) + return result + def cmd_down(self): result = dict( changed=False, @@ -785,6 +833,7 @@ def main(): scale=dict(type='dict'), services=dict(type='list'), dependencies=dict(type='bool', default=True), + pull=dict(type='bool', default=False), debug=dict(type='bool', default=False) )