Add launch type to ecs task (#49081)

* adds fargate launch_type to ecs_task module

* White space changes

* fix documentation for running ecs task on fargate

* remove extraneous example from ecs_task

* White space changes

* Adds changelog fragment

* Pluralize minor_changes in changelog fragment

* Add Stop and Start task permissions

changelogs/fragments/49081-add-launch-type-to-ecs-task.yml

@@ -0,0 +1,2 @@
+minor_changes:
+  - adds launch type to ecs task to support fargate launch type.

hacking/aws_config/testing_policies/container-policy.json

@@ -41,6 +41,8 @@
             "ecs:List*",
             "ecs:RegisterTaskDefinition",
             "ecs:RunTask",
+            "ecs:StartTask",
+            "ecs:StopTask",
             "ecs:UpdateService",
             "elasticloadbalancing:Describe*",
             "iam:AttachRolePolicy",

lib/ansible/modules/cloud/amazon/ecs_task.py

@@ -60,6 +60,12 @@ options:
           - I(network_configuration) has two keys, I(subnets), a list of subnet IDs to which the task is attached and I(security_groups),
             a list of group names or group IDs for the task
         version_added: 2.6
+    launch_type:
+        description:
+          - The launch type on which to run your service
+        required: false
+        version_added: 2.8
+        choices: ["EC2", "FARGATE"]
 extends_documentation_fragment:
     - aws
     - ec2
@@ -95,6 +101,22 @@ EXAMPLES = '''
         - my_security_group
   register: task_output
 
+- name: RUN a task on Fargate
+  ecs_task:
+      operation: run
+      cluster: console-sample-app-static-cluster
+      task_definition: console-sample-app-static-taskdef
+      task: "arn:aws:ecs:us-west-2:172139249013:task/3f8353d1-29a8-4689-bbf6-ad79937ffe8a"
+      started_by: ansible_user
+      launch_type: FARGATE
+      network_configuration:
+        subnets:
+        - subnet-abcd1234
+        security_groups:
+        - sg-aaaa1111
+        - my_security_group
+  register: task_output
+
 - name: Stop a task
   ecs_task:
       operation: stop
@@ -160,6 +182,10 @@ task:
             description: The timestamp of when the task was stopped.
             returned: only when details is true
             type: str
+        launchType:
+            description: The launch type on which to run your task.
+            returned: always
+            type: str
 '''
 
 from ansible.module_utils.aws.core import AnsibleAWSModule
@@ -208,13 +234,15 @@ class EcsExecManager:
                     return c
         return None
 
-    def run_task(self, cluster, task_definition, overrides, count, startedBy):
+    def run_task(self, cluster, task_definition, overrides, count, startedBy, launch_type):
         if overrides is None:
             overrides = dict()
         params = dict(cluster=cluster, taskDefinition=task_definition,
                       overrides=overrides, count=count, startedBy=startedBy)
         if self.module.params['network_configuration']:
             params['networkConfiguration'] = self.format_network_configuration(self.module.params['network_configuration'])
+        if launch_type:
+            params['launchType'] = launch_type
         try:
             response = self.ecs.run_task(**params)
         except (botocore.exceptions.ClientError, botocore.exceptions.BotoCoreError) as e:
@@ -247,6 +275,13 @@ class EcsExecManager:
         response = self.ecs.stop_task(cluster=cluster, task=task)
         return response['task']
 
+    def ecs_api_handles_launch_type(self):
+        from distutils.version import LooseVersion
+        # There doesn't seem to be a nice way to inspect botocore to look
+        # for attributes (and networkConfiguration is not an explicit argument
+        # to e.g. ecs.run_task, it's just passed as a keyword argument)
+        return LooseVersion(botocore.__version__) >= LooseVersion('1.8.4')
+
     def ecs_api_handles_network_configuration(self):
         from distutils.version import LooseVersion
         # There doesn't seem to be a nice way to inspect botocore to look
@@ -266,10 +301,12 @@ def main():
         task=dict(required=False, type='str'),  # P*
         container_instances=dict(required=False, type='list'),  # S*
         started_by=dict(required=False, type='str'),  # R S
-        network_configuration=dict(required=False, type='dict')
+        network_configuration=dict(required=False, type='dict'),
+        launch_type=dict(required=False, choices=['EC2', 'FARGATE'])
     ))
 
-    module = AnsibleAWSModule(argument_spec=argument_spec, supports_check_mode=True)
+    module = AnsibleAWSModule(argument_spec=argument_spec, supports_check_mode=True,
+                              required_if=[('launch_type', 'FARGATE', ['network_configuration'])])
 
     # Validate Inputs
     if module.params['operation'] == 'run':
@@ -295,8 +332,13 @@ def main():
         status_type = "STOPPED"
 
     service_mgr = EcsExecManager(module)
+
     if module.params['network_configuration'] and not service_mgr.ecs_api_handles_network_configuration():
         module.fail_json(msg='botocore needs to be version 1.7.44 or higher to use network configuration')
+
+    if module.params['launch_type'] and not service_mgr.ecs_api_handles_launch_type():
+        module.fail_json(msg='botocore needs to be version 1.8.4 or higher to use launch type')
+
     existing = service_mgr.list_tasks(module.params['cluster'], task_to_list, status_type)
 
     results = dict(changed=False)
@@ -311,7 +353,8 @@ def main():
                     module.params['task_definition'],
                     module.params['overrides'],
                     module.params['count'],
-                    module.params['started_by'])
+                    module.params['started_by'],
+                    module.params['launch_type'])
             results['changed'] = True
 
     elif module.params['operation'] == 'start':

test/integration/targets/ecs_cluster/playbooks/roles/ecs_cluster/files/ecs-trust-policy.json

@@ -5,7 +5,10 @@
       "Sid": "",
       "Effect": "Allow",
       "Principal": {
-        "Service": "ecs.amazonaws.com"
+        "Service": [
+          "ecs.amazonaws.com",
+          "ecs-tasks.amazonaws.com"
+        ]
       },
       "Action": "sts:AssumeRole"
     }

test/integration/targets/ecs_cluster/playbooks/roles/ecs_cluster/tasks/main.yml

@@ -738,6 +738,22 @@
         <<: *aws_connection_info
       register: ecs_fargate_service_network_with_awsvpc
 
+    - name: create fargate ECS task with run task
+      ecs_task:
+        operation: run
+        cluster: "{{ ecs_cluster_name }}"
+        task_definition: "{{ ecs_task_name }}-vpc"
+        launch_type: FARGATE
+        count: 1
+        network_configuration:
+          subnets: "{{ setup_subnet.results | json_query('[].subnet.id') }}"
+          security_groups:
+            - '{{ setup_sg.group_id }}'
+          assign_public_ip: true
+        started_by: ansible_user
+        <<: *aws_connection_info
+      register: fargate_run_task_output
+
     - name: assert that public IP assignment is enabled
       assert:
         that:
@@ -879,6 +895,15 @@
       ignore_errors: yes
       register: ecs_service_scale_down
 
+    - name: stop Fargate ECS task
+      ecs_task:
+        task: "{{ fargate_run_task_output.task[0].taskArn }}"
+        task_definition: "{{ ecs_task_name }}-vpc"
+        operation: stop
+        cluster: "{{ ecs_cluster_name }}"
+        <<: *aws_connection_info
+      ignore_errors: yes
+
     - name: pause to allow services to scale down
       pause:
         seconds: 60