def delete_stack(stack_id: str, delete_options: dict) -> dict:
"""
DELETE /stacks/{id}
Delete a stack
"""
sentry_client.capture_breadcrumb(data={
'stack_id': stack_id,
'delete_options': delete_options,
})
dry_run = delete_options.get('dry_run', False)
force = delete_options.get('force', False)
region = delete_options.get('region', config.region) # type: Optional[str]
senza = Senza(region)
logger.info("Removing stack %s...", stack_id)
running_time = MeasureRunningTime('delete_stack.success')
output = senza.remove(stack_id,
dry_run=dry_run, force=force)
running_time.finish()
logger.info("Stack %s removed.", stack_id)
return '', 204, _make_headers(output=output)
def get_stack_traffic(stack_id: str,
region: str = None) -> Tuple[dict, int, dict]:
"""
GET /stacks/{id}/traffic
Update traffic and Taupage image
"""
sentry_client.capture_breadcrumb(data={
'stack_id': stack_id,
'region': region,
})
stack_name, stack_version = stack_id.rsplit('-', 1)
senza = Senza(region or config.region)
running_time = MeasureRunningTime('get_stack_traffic.success')
traffic_info = senza.traffic(stack_name=stack_name)
if traffic_info:
for stack_traffic_info in traffic_info:
if stack_traffic_info['identifier'] == stack_id:
return {
'weight': float(stack_traffic_info['weight%'])
}, 200, _make_headers()
running_time.finish()
return connexion.problem(404,
'Not Found',
'Stack not found: {}'.format(stack_id),
headers=_make_headers())
def delete_stack(stack_id: str, delete_options: dict) -> dict:
"""
DELETE /stacks/{id}
Delete a stack
"""
sentry_client.capture_breadcrumb(data={
'stack_id': stack_id,
'delete_options': delete_options,
})
dry_run = delete_options.get('dry_run', False)
force = delete_options.get('force', False)
region = delete_options.get('region', config.region) # type: Optional[str]
senza = Senza(region)
logger.info("Removing stack %s...", stack_id)
running_time = MeasureRunningTime('delete_stack.success')
output = senza.remove(stack_id,
dry_run=dry_run, force=force)
running_time.finish()
logger.info("Stack %s removed.", stack_id)
return '', 204, _make_headers(output=output)
def patch_stack(stack_id: str, stack_patch: dict) -> dict:
"""
PATCH /stacks/{id}
Update scale, traffic and Taupage image
"""
sentry_client.capture_breadcrumb(data={
'stack_id': stack_id,
'stack_patch': stack_patch,
})
stack_patch = filter_empty_values(stack_patch)
stack_name, stack_version = stack_id.rsplit('-', 1)
use_region = stack_patch.get('region', config.region)
senza = Senza(use_region)
log_info = {'stack_id': stack_id,
'stack_name': stack_name}
running_time = MeasureRunningTime('patch_stack.success')
if 'new_scale' in stack_patch:
new_scale = stack_patch['new_scale']
senza.scale(stack_name, stack_version, new_scale)
if 'new_ami_image' in stack_patch:
# Change the AMI image of the Auto Scaling Group (ASG) and respawn the
# instances to use new image.
new_ami_image = stack_patch['new_ami_image']
senza.patch(stack_name, stack_version, new_ami_image)
senza.respawn_instances(stack_name, stack_version)
if 'new_traffic' in stack_patch:
new_traffic = stack_patch['new_traffic']
domains = senza.domains(stack_name)
if domains:
logger.info("Switching app traffic to stack.",
extra=log_info)
senza.traffic(stack_name=stack_name,
stack_version=stack_version,
percentage=new_traffic)
else:
logger.info("App does not have a domain so traffic will not be switched.",
extra=log_info)
raise TrafficNotUpdated("App does not have a domain.")
# refresh the dict
stack_dict = Stack.get(stack_name, stack_version, region=use_region)
running_time.finish()
return stack_dict, 202, _make_headers()
def patch_stack(stack_id: str, stack_patch: dict) -> dict:
"""
PATCH /stacks/{id}
Update scale, traffic and Taupage image
"""
sentry_client.capture_breadcrumb(data={
'stack_id': stack_id,
'stack_patch': stack_patch,
})
stack_patch = filter_empty_values(stack_patch)
stack_name, stack_version = stack_id.rsplit('-', 1)
use_region = stack_patch.get('region', config.region)
senza = Senza(use_region)
log_info = {'stack_id': stack_id, 'stack_name': stack_name}
running_time = MeasureRunningTime('patch_stack.success')
if 'new_scale' in stack_patch:
new_scale = stack_patch['new_scale']
senza.scale(stack_name, stack_version, new_scale)
if 'new_ami_image' in stack_patch:
# Change the AMI image of the Auto Scaling Group (ASG) and respawn the
# instances to use new image.
new_ami_image = stack_patch['new_ami_image']
senza.patch(stack_name, stack_version, new_ami_image)
senza.respawn_instances(stack_name, stack_version)
if 'new_traffic' in stack_patch:
new_traffic = stack_patch['new_traffic']
domains = senza.domains(stack_name)
if domains:
logger.info("Switching app traffic to stack.", extra=log_info)
senza.traffic(stack_name=stack_name,
stack_version=stack_version,
percentage=new_traffic)
else:
logger.info(
"App does not have a domain so traffic will not be switched.",
extra=log_info)
raise TrafficNotUpdated("App does not have a domain.")
# refresh the dict
stack_dict = Stack.get(stack_name, stack_version, region=use_region)
running_time.finish()
return stack_dict, 202, _make_headers()
def get_stack_traffic(stack_id: str, region: str=None) -> Tuple[dict, int, dict]:
"""
GET /stacks/{id}/traffic
Update traffic and Taupage image
"""
sentry_client.capture_breadcrumb(data={
'stack_id': stack_id,
'region': region,
})
stack_name, stack_version = stack_id.rsplit('-', 1)
senza = Senza(region or config.region)
running_time = MeasureRunningTime('get_stack_traffic.success')
traffic_info = senza.traffic(stack_name=stack_name)
if traffic_info:
for stack_traffic_info in traffic_info:
if stack_traffic_info['identifier'] == stack_id:
return {'weight': float(stack_traffic_info['weight%'])}, 200, _make_headers()
running_time.finish()
return connexion.problem(404, 'Not Found',
'Stack not found: {}'.format(stack_id),
headers=_make_headers())
def create_stack(new_stack: dict) -> dict:
"""
POST /stacks/
:param new_stack: New stack
"""
keep_stacks = new_stack['keep_stacks'] # type: int
new_traffic = new_stack['new_traffic'] # type: int
stack_version = new_stack['stack_version'] # type: str
senza_yaml = new_stack['senza_yaml'] # type: str
parameters = new_stack.get('parameters', [])
disable_rollback = new_stack.get('disable_rollback', False)
region = new_stack.get('region', config.region) # type: Optional[str]
dry_run = new_stack.get('dry_run', False)
tags = new_stack.get('tags', [])
running_time = MeasureRunningTime('create_stack.success')
sentry_client.capture_breadcrumb(
data={
'keep_stacks': keep_stacks,
'new_traffic': new_traffic,
'stack_version': stack_version,
'disable_rollback': disable_rollback,
})
try:
senza_definition = yaml.load(senza_yaml)
except yaml.YAMLError as exception:
metrics.count('create_stack.invalid_senza_file')
return connexion.problem(400,
'Invalid senza yaml',
exception.message,
headers=_make_headers())
try:
stack_name = senza_definition['SenzaInfo']['StackName']
except KeyError as exception:
logger.error("Couldn't get stack name from definition.",
extra={'senza_yaml': repr(senza_yaml)})
missing_property = str(exception)
problem = connexion.problem(
400,
'Invalid senza yaml',
"Missing property in senza yaml: {}".format(missing_property),
headers=_make_headers())
metrics.count('create_stack.missing_stack_name_prop')
return problem
# Create the Stack
logger.info("Creating stack %s...", stack_name)
senza = Senza(region)
tags = [
'LizzyKeepStacks={}'.format(keep_stacks),
'LizzyTargetTraffic={}'.format(new_traffic), *tags
]
output = senza.create(senza_yaml, stack_version, parameters,
disable_rollback, dry_run, tags)
logger.info("Stack created.",
extra={
'stack_name': stack_name,
'stack_version': stack_version,
'parameters': parameters
})
stack_dict = (Stack.get(stack_name, stack_version, region=region)
if not dry_run else {
'stack_name': stack_name,
'creation_time': '',
'description': '',
'status': 'DRY-RUN',
'version': stack_version
})
running_time.finish()
metrics.count('create_stack.region.{}'.format(region))
return stack_dict, 201, _make_headers(output=output)
def create_stack(new_stack: dict) -> dict:
"""
POST /stacks/
:param new_stack: New stack
"""
keep_stacks = new_stack['keep_stacks'] # type: int
new_traffic = new_stack['new_traffic'] # type: int
stack_version = new_stack['stack_version'] # type: str
senza_yaml = new_stack['senza_yaml'] # type: str
parameters = new_stack.get('parameters', [])
disable_rollback = new_stack.get('disable_rollback', False)
region = new_stack.get('region', config.region) # type: Optional[str]
dry_run = new_stack.get('dry_run', False)
tags = new_stack.get('tags', [])
running_time = MeasureRunningTime('create_stack.success')
sentry_client.capture_breadcrumb(data={
'keep_stacks': keep_stacks,
'new_traffic': new_traffic,
'stack_version': stack_version,
'disable_rollback': disable_rollback,
})
try:
senza_definition = yaml.load(senza_yaml)
except yaml.YAMLError as exception:
metrics.count('create_stack.invalid_senza_file')
return connexion.problem(400,
'Invalid senza yaml',
exception.message,
headers=_make_headers())
try:
stack_name = senza_definition['SenzaInfo']['StackName']
except KeyError as exception:
logger.error("Couldn't get stack name from definition.",
extra={'senza_yaml': repr(senza_yaml)})
missing_property = str(exception)
problem = connexion.problem(400,
'Invalid senza yaml',
"Missing property in senza yaml: {}".format(
missing_property),
headers=_make_headers())
metrics.count('create_stack.missing_stack_name_prop')
return problem
# Create the Stack
logger.info("Creating stack %s...", stack_name)
senza = Senza(region)
tags = ['LizzyKeepStacks={}'.format(keep_stacks),
'LizzyTargetTraffic={}'.format(new_traffic),
*tags]
output = senza.create(senza_yaml, stack_version, parameters, disable_rollback,
dry_run, tags)
logger.info("Stack created.", extra={'stack_name': stack_name,
'stack_version': stack_version,
'parameters': parameters})
stack_dict = (Stack.get(stack_name, stack_version, region=region)
if not dry_run
else {'stack_name': stack_name,
'creation_time': '',
'description': '',
'status': 'DRY-RUN',
'version': stack_version})
running_time.finish()
metrics.count('create_stack.region.{}'.format(region))
return stack_dict, 201, _make_headers(output=output)