EcsTaskDefinition.diff() - Code Metrics - Inspection of "Support unknown task definition properties" - fabfuel/ecs-deploy - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — develop (#29)

by Fabian

created 2017-09-20 07:48 UTC

EcsTaskDefinition.diff() A

↳ Parent: EcsTaskDefinition

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
c	2
b	0
f	0
dl	0
loc	3
ccs	2
cts	2
cp	1
rs	10
cc	1
crap	1

from datetime import datetime

from boto3.session import Session
from botocore.exceptions import ClientError, NoCredentialsError
from dateutil.tz.tz import tzlocal


class EcsClient(object):
    def __init__(self, access_key_id=None, secret_access_key=None,
                 region=None, profile=None):
        session = Session(aws_access_key_id=access_key_id,
                          aws_secret_access_key=secret_access_key,
                          region_name=region,
                          profile_name=profile)
        self.boto = session.client(u'ecs')

    def describe_services(self, cluster_name, service_name):
        return self.boto.describe_services(
            cluster=cluster_name,
            services=[service_name]
        )

    def describe_task_definition(self, task_definition_arn):
        try:
            return self.boto.describe_task_definition(
                taskDefinition=task_definition_arn
            )
        except ClientError:
            raise UnknownTaskDefinitionError(
                u'Unknown task definition arn: %s' % task_definition_arn
            )

    def list_tasks(self, cluster_name, service_name):
        return self.boto.list_tasks(
            cluster=cluster_name,
            serviceName=service_name
        )

    def describe_tasks(self, cluster_name, task_arns):
        return self.boto.describe_tasks(cluster=cluster_name, tasks=task_arns)

    def register_task_definition(self, family, containers, volumes, role_arn,
                                 additional_properties):
        return self.boto.register_task_definition(
            family=family,
            containerDefinitions=containers,
            volumes=volumes,
            taskRoleArn=role_arn or u'',
            **additional_properties
        )

    def deregister_task_definition(self, task_definition_arn):
        return self.boto.deregister_task_definition(
            taskDefinition=task_definition_arn
        )

    def update_service(self, cluster, service, desired_count, task_definition):
        return self.boto.update_service(
            cluster=cluster,
            service=service,
            desiredCount=desired_count,
            taskDefinition=task_definition
        )

    def run_task(self, cluster, task_definition, count, started_by, overrides):
        return self.boto.run_task(
            cluster=cluster,
            taskDefinition=task_definition,
            count=count,
            startedBy=started_by,
            overrides=overrides
        )


class EcsService(dict):
    def __init__(self, cluster, service_definition=None, **kwargs):
        self._cluster = cluster
        super(EcsService, self).__init__(service_definition, **kwargs)

    def set_desired_count(self, desired_count):
        self[u'desiredCount'] = desired_count

    def set_task_definition(self, task_definition):
        self[u'taskDefinition'] = task_definition.arn

    @property
    def cluster(self):
        return self._cluster

    @property
    def name(self):
        return self.get(u'serviceName')

    @property
    def task_definition(self):
        return self.get(u'taskDefinition')

    @property
    def desired_count(self):
        return self.get(u'desiredCount')

    @property
    def deployment_created_at(self):
        for deployment in self.get(u'deployments'):
            if deployment.get(u'status') == u'PRIMARY':
                return deployment.get(u'createdAt')
        return datetime.now()

    @property
    def deployment_updated_at(self):
        for deployment in self.get(u'deployments'):
            if deployment.get(u'status') == u'PRIMARY':
                return deployment.get(u'updatedAt')
        return datetime.now()

    @property
    def errors(self):
        return self.get_warnings(
            since=self.deployment_updated_at
        )

    @property
    def older_errors(self):
        return self.get_warnings(
            since=self.deployment_created_at,
            until=self.deployment_updated_at
        )

    def get_warnings(self, since=None, until=None):
        since = since or self.deployment_created_at
        until = until or datetime.now(tz=tzlocal())
        errors = {}
        for event in self.get(u'events'):
            if u'unable' not in event[u'message']:
                continue
            if since < event[u'createdAt'] < until:
                errors[event[u'createdAt']] = event[u'message']
        return errors


class EcsTaskDefinition(object):
    def __init__(self, containerDefinitions, volumes, family, revision,
                 taskRoleArn, status, taskDefinitionArn, requiresAttributes,
                 **kwargs):
        self.containers = containerDefinitions
        self.volumes = volumes
        self.family = family
        self.revision = revision
        self.role_arn = taskRoleArn
        self.arn = taskDefinitionArn
        self.status = status
        self.requires_attributes = requiresAttributes
        self.additional_properties = kwargs
        self._diff = []

    @property
    def container_names(self):
        for container in self.containers:
            yield container[u'name']

    @property
    def family_revision(self):
        return '%s:%d' % (self.family, self.revision)

    @property
    def diff(self):
        return self._diff

    def get_overrides(self):
        override = dict()
        overrides = []
        for diff in self.diff:
            if override.get('name') != diff.container:
                override = dict(name=diff.container)
                overrides.append(override)
            if diff.field == 'command':
                override['command'] = self.get_overrides_command(diff.value)
            elif diff.field == 'environment':
                override['environment'] = self.get_overrides_env(diff.value)
        return overrides

    @staticmethod
    def get_overrides_command(command):
        return command.split(' ')

    @staticmethod
    def get_overrides_env(env):
        return [{"name": e, "value": env[e]} for e in env]

    def set_images(self, tag=None, **images):
        self.validate_container_options(**images)
        for container in self.containers:
            if container[u'name'] in images:
                new_image = images[container[u'name']]
                diff = EcsTaskDefinitionDiff(
                    container=container[u'name'],
                    field=u'image',
                    value=new_image,
                    old_value=container[u'image']
                )
                self._diff.append(diff)
                container[u'image'] = new_image
            elif tag:
                image_definition = container[u'image'].rsplit(u':', 1)
                new_image = u'%s:%s' % (image_definition[0], tag.strip())
                diff = EcsTaskDefinitionDiff(
                    container=container[u'name'],
                    field=u'image',
                    value=new_image,
                    old_value=container[u'image']
                )
                self._diff.append(diff)
                container[u'image'] = new_image

    def set_commands(self, **commands):
        self.validate_container_options(**commands)

        for container in self.containers:
            if container[u'name'] in commands:
                new_command = commands[container[u'name']]
                diff = EcsTaskDefinitionDiff(
                    container=container[u'name'],
                    field=u'command',
                    value=new_command,
                    old_value=container.get(u'command')
                )
                self._diff.append(diff)
                container[u'command'] = [new_command]

    def set_environment(self, environment_list):
        environment = {}


        for env in environment_list:
            environment.setdefault(env[0], {})
            environment[env[0]][env[1]] = env[2]

        self.validate_container_options(**environment)
        for container in self.containers:
            if container[u'name'] in environment:
                self.apply_container_environment(
                    container=container,
                    new_environment=environment[container[u'name']]
                )

    def apply_container_environment(self, container, new_environment):
        environment = container.get('environment', {})
        old_environment = {env['name']: env['value'] for env in environment}
        merged = old_environment.copy()
        merged.update(new_environment)

        diff = EcsTaskDefinitionDiff(
            container=container[u'name'],
            field=u'environment',
            value=merged,
            old_value=old_environment
        )
        self._diff.append(diff)

        container[u'environment'] = [
            {"name": e, "value": merged[e]} for e in merged
        ]

    def validate_container_options(self, **container_options):
        for container_name in container_options:
            if container_name not in self.container_names:
                raise UnknownContainerError(
                    u'Unknown container: %s' % container_name
                )

    def set_role_arn(self, role_arn):
        if role_arn:
            diff = EcsTaskDefinitionDiff(
                container=None,
                field=u'role_arn',
                value=role_arn,
                old_value=self.role_arn
            )
            self.role_arn = role_arn
            self._diff.append(diff)


class EcsTaskDefinitionDiff(object):
    def __init__(self, container, field, value, old_value):
        self.container = container
        self.field = field
        self.value = value
        self.old_value = old_value

    def __repr__(self):
        if self.field == u'environment':
            return '\n'.join(self._get_environment_diffs(
                self.container,
                self.value,
                self.old_value,
            ))
        elif self.container:
            return u'Changed %s of container "%s" to: "%s" (was: "%s")' % (
                self.field,
                self.container,
                self.value,
                self.old_value
            )
        else:
            return u'Changed %s to: "%s" (was: "%s")' % (
                self.field,
                self.value,
                self.old_value
            )

    @staticmethod
    def _get_environment_diffs(container, env, old_env):
        msg = u'Changed environment "%s" of container "%s" to: "%s"'
        diffs = []
        for name, value in env.items():
            old_value = old_env.get(name)
            if value != old_value or not old_value:
                message = msg % (name, container, value)
                diffs.append(message)
        return diffs


class EcsAction(object):
    def __init__(self, client, cluster_name, service_name):
        self._client = client
        self._cluster_name = cluster_name
        self._service_name = service_name

        try:
            if service_name:
                self._service = self.get_service()
        except IndexError:
            raise EcsConnectionError(
                u'An error occurred when calling the DescribeServices '
                u'operation: Service not found.'
            )
        except ClientError as e:
            raise EcsConnectionError(str(e))
        except NoCredentialsError:
            raise EcsConnectionError(
                u'Unable to locate credentials. Configure credentials '
                u'by running "aws configure".'
            )

    def get_service(self):
        services_definition = self._client.describe_services(
            cluster_name=self._cluster_name,
            service_name=self._service_name
        )
        return EcsService(
            cluster=self._cluster_name,
            service_definition=services_definition[u'services'][0]
        )

    def get_current_task_definition(self, service):
        return self.get_task_definition(service.task_definition)

    def get_task_definition(self, task_definition):
        task_definition_payload = self._client.describe_task_definition(
            task_definition_arn=task_definition
        )

        task_definition = EcsTaskDefinition(
            **task_definition_payload[u'taskDefinition']
        )
        return task_definition

    def update_task_definition(self, task_definition):
        response = self._client.register_task_definition(
            family=task_definition.family,
            containers=task_definition.containers,
            volumes=task_definition.volumes,
            role_arn=task_definition.role_arn,
            additional_properties=task_definition.additional_properties
        )
        new_task_definition = EcsTaskDefinition(**response[u'taskDefinition'])
        self._client.deregister_task_definition(task_definition.arn)
        return new_task_definition

    def update_service(self, service):
        response = self._client.update_service(
            cluster=service.cluster,
            service=service.name,
            desired_count=service.desired_count,
            task_definition=service.task_definition
        )
        return EcsService(self._cluster_name, response[u'service'])

    def is_deployed(self, service):
        if len(service[u'deployments']) != 1:
            return False
        running_tasks = self._client.list_tasks(
            cluster_name=service.cluster,
            service_name=service.name
        )
        if not running_tasks[u'taskArns']:
            return service.desired_count == 0
        running_count = self.get_running_tasks_count(
            service=service,
            task_arns=running_tasks[u'taskArns']
        )
        return service.desired_count == running_count

    def get_running_tasks_count(self, service, task_arns):
        running_count = 0
        tasks_details = self._client.describe_tasks(
            cluster_name=self._cluster_name,
            task_arns=task_arns
        )
        for task in tasks_details[u'tasks']:
            arn = task[u'taskDefinitionArn']
            status = task[u'lastStatus']
            if arn == service.task_definition and status == u'RUNNING':
                running_count += 1
        return running_count

    @property
    def client(self):
        return self._client

    @property
    def service(self):
        return self._service

    @property
    def cluster_name(self):
        return self._cluster_name

    @property
    def service_name(self):
        return self._service_name


class DeployAction(EcsAction):
    def deploy(self, task_definition):
        self._service.set_task_definition(task_definition)
        return self.update_service(self._service)


class ScaleAction(EcsAction):
    def scale(self, desired_count):
        self._service.set_desired_count(desired_count)
        return self.update_service(self._service)


class RunAction(EcsAction):
    def __init__(self, client, cluster_name):
        super(RunAction, self).__init__(client, cluster_name, None)
        self._client = client
        self._cluster_name = cluster_name
        self.started_tasks = []

    def run(self, task_definition, count, started_by):
        result = self._client.run_task(
            cluster=self._cluster_name,
            task_definition=task_definition.family_revision,
            count=count,
            started_by=started_by,
            overrides=dict(containerOverrides=task_definition.get_overrides())
        )
        self.started_tasks = result['tasks']
        return True


class EcsError(Exception):
    pass


class EcsConnectionError(EcsError):
    pass


class UnknownContainerError(EcsError):
    pass


class TaskPlacementError(EcsError):
    pass


class UnknownTaskDefinitionError(EcsError):
    pass


1	1		from datetime import datetime
2
3	1		from boto3.session import Session
4	1		from botocore.exceptions import ClientError, NoCredentialsError
5	1		from dateutil.tz.tz import tzlocal
6
7
8	1		class EcsClient(object):
9	1		def __init__(self, access_key_id=None, secret_access_key=None,
10			region=None, profile=None):
11	1		session = Session(aws_access_key_id=access_key_id,
12			aws_secret_access_key=secret_access_key,
13			region_name=region,
14			profile_name=profile)
15	1		self.boto = session.client(u'ecs')
16
17	1		def describe_services(self, cluster_name, service_name):
18	1		return self.boto.describe_services(
19			cluster=cluster_name,
20			services=[service_name]
21			)
22
23	1		def describe_task_definition(self, task_definition_arn):
24	1		try:
25	1		return self.boto.describe_task_definition(
26			taskDefinition=task_definition_arn
27			)
28	1		except ClientError:
29	1		raise UnknownTaskDefinitionError(
30			u'Unknown task definition arn: %s' % task_definition_arn
31			)
32
33	1		def list_tasks(self, cluster_name, service_name):
34	1		return self.boto.list_tasks(
35			cluster=cluster_name,
36			serviceName=service_name
37			)
38
39	1		def describe_tasks(self, cluster_name, task_arns):
40	1		return self.boto.describe_tasks(cluster=cluster_name, tasks=task_arns)
41
42	1		def register_task_definition(self, family, containers, volumes, role_arn,
43			additional_properties):
44	1		return self.boto.register_task_definition(
45			family=family,
46			containerDefinitions=containers,
47			volumes=volumes,
48			taskRoleArn=role_arn or u'',
49			**additional_properties
50			)
51
52	1		def deregister_task_definition(self, task_definition_arn):
53	1		return self.boto.deregister_task_definition(
54			taskDefinition=task_definition_arn
55			)
56
57	1		def update_service(self, cluster, service, desired_count, task_definition):
58	1		return self.boto.update_service(
59			cluster=cluster,
60			service=service,
61			desiredCount=desired_count,
62			taskDefinition=task_definition
63			)
64
65	1		def run_task(self, cluster, task_definition, count, started_by, overrides):
66	1		return self.boto.run_task(
67			cluster=cluster,
68			taskDefinition=task_definition,
69			count=count,
70			startedBy=started_by,
71			overrides=overrides
72			)
73
74
75	1		class EcsService(dict):
76	1		def __init__(self, cluster, service_definition=None, **kwargs):
77	1		self._cluster = cluster
78	1		super(EcsService, self).__init__(service_definition, **kwargs)
79
80	1		def set_desired_count(self, desired_count):
81	1		self[u'desiredCount'] = desired_count
82
83	1		def set_task_definition(self, task_definition):
84	1		self[u'taskDefinition'] = task_definition.arn
85
86	1		@property
87			def cluster(self):
88	1		return self._cluster
89
90	1		@property
91			def name(self):
92	1		return self.get(u'serviceName')
93
94	1		@property
95			def task_definition(self):
96	1		return self.get(u'taskDefinition')
97
98	1		@property
99			def desired_count(self):
100	1		return self.get(u'desiredCount')
101
102	1		@property
103			def deployment_created_at(self):
104	1		for deployment in self.get(u'deployments'):
105	1		if deployment.get(u'status') == u'PRIMARY':
106	1		return deployment.get(u'createdAt')
107	1		return datetime.now()
108
109	1		@property
110			def deployment_updated_at(self):
111	1		for deployment in self.get(u'deployments'):
112	1		if deployment.get(u'status') == u'PRIMARY':
113	1		return deployment.get(u'updatedAt')
114	1		return datetime.now()
115
116	1		@property
117			def errors(self):
118	1		return self.get_warnings(
119			since=self.deployment_updated_at
120			)
121
122	1		@property
123			def older_errors(self):
124	1		return self.get_warnings(
125			since=self.deployment_created_at,
126			until=self.deployment_updated_at
127			)
128
129	1		def get_warnings(self, since=None, until=None):
130	1		since = since or self.deployment_created_at
131	1		until = until or datetime.now(tz=tzlocal())
132	1		errors = {}
133	1		for event in self.get(u'events'):
134	1		if u'unable' not in event[u'message']:
135			continue
136	1		if since < event[u'createdAt'] < until:
137	1		errors[event[u'createdAt']] = event[u'message']
138	1		return errors
139
140
141	1		class EcsTaskDefinition(object):
142	1		def __init__(self, containerDefinitions, volumes, family, revision,
143			taskRoleArn, status, taskDefinitionArn, requiresAttributes,
144			**kwargs):
145	1		self.containers = containerDefinitions
146	1		self.volumes = volumes
147	1		self.family = family
148	1		self.revision = revision
149	1		self.role_arn = taskRoleArn
150	1		self.arn = taskDefinitionArn
151	1		self.status = status
152	1		self.requires_attributes = requiresAttributes
153	1		self.additional_properties = kwargs
154	1		self._diff = []
155
156	1		@property
157			def container_names(self):
158	1		for container in self.containers:
159	1		yield container[u'name']
160
161	1		@property
162			def family_revision(self):
163	1		return '%s:%d' % (self.family, self.revision)
164
165	1		@property
166			def diff(self):
167	1		return self._diff
168
169	1		def get_overrides(self):
170	1		override = dict()
171	1		overrides = []
172	1		for diff in self.diff:
173	1		if override.get('name') != diff.container:
174	1		override = dict(name=diff.container)
175	1		overrides.append(override)
176	1		if diff.field == 'command':
177	1		override['command'] = self.get_overrides_command(diff.value)
178	1		elif diff.field == 'environment':
179	1		override['environment'] = self.get_overrides_env(diff.value)
180	1		return overrides
181
182	1		@staticmethod
183			def get_overrides_command(command):
184	1		return command.split(' ')
185
186	1		@staticmethod
187			def get_overrides_env(env):
188	1		return [{"name": e, "value": env[e]} for e in env]
189
190	1		def set_images(self, tag=None, **images):
191	1		self.validate_container_options(**images)
192	1		for container in self.containers:
193	1		if container[u'name'] in images:
194	1		new_image = images[container[u'name']]
195	1		diff = EcsTaskDefinitionDiff(
196			container=container[u'name'],
197			field=u'image',
198			value=new_image,
199			old_value=container[u'image']
200			)
201	1		self._diff.append(diff)
202	1		container[u'image'] = new_image
203	1		elif tag:
204	1		image_definition = container[u'image'].rsplit(u':', 1)
205	1		new_image = u'%s:%s' % (image_definition[0], tag.strip())
206	1		diff = EcsTaskDefinitionDiff(
207			container=container[u'name'],
208			field=u'image',
209			value=new_image,
210			old_value=container[u'image']
211			)
212	1		self._diff.append(diff)
213	1		container[u'image'] = new_image
214
215	1		def set_commands(self, **commands):
216	1	View Code Duplication	self.validate_container_options(**commands)
			0 ignored issues – show Duplication introduced 2017-09-20 07:49 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
217	1		for container in self.containers:
218	1		if container[u'name'] in commands:
219	1		new_command = commands[container[u'name']]
220	1		diff = EcsTaskDefinitionDiff(
221			container=container[u'name'],
222			field=u'command',
223			value=new_command,
224			old_value=container.get(u'command')
225			)
226	1		self._diff.append(diff)
227	1		container[u'command'] = [new_command]
228
229	1		def set_environment(self, environment_list):
230	1		environment = {}
231		View Code Duplication
			0 ignored issues – show Duplication introduced 2017-09-20 07:49 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
232	1		for env in environment_list:
233	1		environment.setdefault(env[0], {})
234	1		environment[env[0]][env[1]] = env[2]
235
236	1		self.validate_container_options(**environment)
237	1		for container in self.containers:
238	1		if container[u'name'] in environment:
239	1		self.apply_container_environment(
240			container=container,
241			new_environment=environment[container[u'name']]
242			)
243
244	1		def apply_container_environment(self, container, new_environment):
245	1		environment = container.get('environment', {})
246	1		old_environment = {env['name']: env['value'] for env in environment}
247	1		merged = old_environment.copy()
248	1		merged.update(new_environment)
249
250	1		diff = EcsTaskDefinitionDiff(
251			container=container[u'name'],
252			field=u'environment',
253			value=merged,
254			old_value=old_environment
255			)
256	1		self._diff.append(diff)
257
258	1		container[u'environment'] = [
259			{"name": e, "value": merged[e]} for e in merged
260			]
261
262	1		def validate_container_options(self, **container_options):
263	1		for container_name in container_options:
264	1		if container_name not in self.container_names:
265	1		raise UnknownContainerError(
266			u'Unknown container: %s' % container_name
267			)
268
269	1		def set_role_arn(self, role_arn):
270	1		if role_arn:
271	1		diff = EcsTaskDefinitionDiff(
272			container=None,
273			field=u'role_arn',
274			value=role_arn,
275			old_value=self.role_arn
276			)
277	1		self.role_arn = role_arn
278	1		self._diff.append(diff)
279
280
281	1		class EcsTaskDefinitionDiff(object):
282	1		def __init__(self, container, field, value, old_value):
283	1		self.container = container
284	1		self.field = field
285	1		self.value = value
286	1		self.old_value = old_value
287
288	1		def __repr__(self):
289	1		if self.field == u'environment':
290	1		return '\n'.join(self._get_environment_diffs(
291			self.container,
292			self.value,
293			self.old_value,
294			))
295	1		elif self.container:
296	1		return u'Changed %s of container "%s" to: "%s" (was: "%s")' % (
297			self.field,
298			self.container,
299			self.value,
300			self.old_value
301			)
302			else:
303	1		return u'Changed %s to: "%s" (was: "%s")' % (
304			self.field,
305			self.value,
306			self.old_value
307			)
308
309	1		@staticmethod
310			def _get_environment_diffs(container, env, old_env):
311	1		msg = u'Changed environment "%s" of container "%s" to: "%s"'
312	1		diffs = []
313	1		for name, value in env.items():
314	1		old_value = old_env.get(name)
315	1		if value != old_value or not old_value:
316	1		message = msg % (name, container, value)
317	1		diffs.append(message)
318	1		return diffs
319
320
321	1		class EcsAction(object):
322	1		def __init__(self, client, cluster_name, service_name):
323	1		self._client = client
324	1		self._cluster_name = cluster_name
325	1		self._service_name = service_name
326
327	1		try:
328	1		if service_name:
329	1		self._service = self.get_service()
330	1		except IndexError:
331	1		raise EcsConnectionError(
332			u'An error occurred when calling the DescribeServices '
333			u'operation: Service not found.'
334			)
335	1		except ClientError as e:
336	1		raise EcsConnectionError(str(e))
337	1		except NoCredentialsError:
338	1		raise EcsConnectionError(
339			u'Unable to locate credentials. Configure credentials '
340			u'by running "aws configure".'
341			)
342
343	1		def get_service(self):
344	1		services_definition = self._client.describe_services(
345			cluster_name=self._cluster_name,
346			service_name=self._service_name
347			)
348	1		return EcsService(
349			cluster=self._cluster_name,
350			service_definition=services_definition[u'services'][0]
351			)
352
353	1		def get_current_task_definition(self, service):
354	1		return self.get_task_definition(service.task_definition)
355
356	1		def get_task_definition(self, task_definition):
357	1		task_definition_payload = self._client.describe_task_definition(
358			task_definition_arn=task_definition
359			)
360
361	1		task_definition = EcsTaskDefinition(
362			**task_definition_payload[u'taskDefinition']
363			)
364	1		return task_definition
365
366	1		def update_task_definition(self, task_definition):
367	1		response = self._client.register_task_definition(
368			family=task_definition.family,
369			containers=task_definition.containers,
370			volumes=task_definition.volumes,
371			role_arn=task_definition.role_arn,
372			additional_properties=task_definition.additional_properties
373			)
374	1		new_task_definition = EcsTaskDefinition(**response[u'taskDefinition'])
375	1		self._client.deregister_task_definition(task_definition.arn)
376	1		return new_task_definition
377
378	1		def update_service(self, service):
379	1		response = self._client.update_service(
380			cluster=service.cluster,
381			service=service.name,
382			desired_count=service.desired_count,
383			task_definition=service.task_definition
384			)
385	1		return EcsService(self._cluster_name, response[u'service'])
386
387	1		def is_deployed(self, service):
388	1		if len(service[u'deployments']) != 1:
389	1		return False
390	1		running_tasks = self._client.list_tasks(
391			cluster_name=service.cluster,
392			service_name=service.name
393			)
394	1		if not running_tasks[u'taskArns']:
395	1		return service.desired_count == 0
396	1		running_count = self.get_running_tasks_count(
397			service=service,
398			task_arns=running_tasks[u'taskArns']
399			)
400	1		return service.desired_count == running_count
401
402	1		def get_running_tasks_count(self, service, task_arns):
403	1		running_count = 0
404	1		tasks_details = self._client.describe_tasks(
405			cluster_name=self._cluster_name,
406			task_arns=task_arns
407			)
408	1		for task in tasks_details[u'tasks']:
409	1		arn = task[u'taskDefinitionArn']
410	1		status = task[u'lastStatus']
411	1		if arn == service.task_definition and status == u'RUNNING':
412	1		running_count += 1
413	1		return running_count
414
415	1		@property
416			def client(self):
417	1		return self._client
418
419	1		@property
420			def service(self):
421	1		return self._service
422
423	1		@property
424			def cluster_name(self):
425	1		return self._cluster_name
426
427	1		@property
428			def service_name(self):
429	1		return self._service_name
430
431
432	1		class DeployAction(EcsAction):
433	1		def deploy(self, task_definition):
434	1		self._service.set_task_definition(task_definition)
435	1		return self.update_service(self._service)
436
437
438	1		class ScaleAction(EcsAction):
439	1		def scale(self, desired_count):
440	1		self._service.set_desired_count(desired_count)
441	1		return self.update_service(self._service)
442
443
444	1		class RunAction(EcsAction):
445	1		def __init__(self, client, cluster_name):
446	1		super(RunAction, self).__init__(client, cluster_name, None)
447	1		self._client = client
448	1		self._cluster_name = cluster_name
449	1		self.started_tasks = []
450
451	1		def run(self, task_definition, count, started_by):
452	1		result = self._client.run_task(
453			cluster=self._cluster_name,
454			task_definition=task_definition.family_revision,
455			count=count,
456			started_by=started_by,
457			overrides=dict(containerOverrides=task_definition.get_overrides())
458			)
459	1		self.started_tasks = result['tasks']
460	1		return True
461
462
463	1		class EcsError(Exception):
464	1		pass
465
466
467	1		class EcsConnectionError(EcsError):
468	1		pass
469
470
471	1		class UnknownContainerError(EcsError):
472	1		pass
473
474
475	1		class TaskPlacementError(EcsError):
476	1		pass
477
478
479	1		class UnknownTaskDefinitionError(EcsError):
480			pass
481

fabfuel / ecs-deploy

Pull Request — develop (#29)

EcsTaskDefinition.diff() A

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