362 lines
14 KiB
Python
362 lines
14 KiB
Python
# Copyright 2018 Catalyst IT Limited
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
import collections
|
|
|
|
from oslo_config import cfg
|
|
from oslo_log import log as logging
|
|
from oslo_utils import strutils
|
|
import pecan
|
|
from pecan import rest
|
|
import tenacity
|
|
from webob.static import FileIter
|
|
import wsmeext.pecan as wsme_pecan
|
|
|
|
from qinling.api import access_control as acl
|
|
from qinling.api.controllers.v1 import resources
|
|
from qinling.api.controllers.v1 import types
|
|
from qinling import context
|
|
from qinling.db import api as db_api
|
|
from qinling import exceptions as exc
|
|
from qinling import rpc
|
|
from qinling.storage import base as storage_base
|
|
from qinling.utils import constants
|
|
from qinling.utils import etcd_util
|
|
from qinling.utils import rest_utils
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
CONF = cfg.CONF
|
|
|
|
|
|
class FunctionVersionsController(rest.RestController):
|
|
_custom_actions = {
|
|
'scale_up': ['POST'],
|
|
'scale_down': ['POST'],
|
|
'detach': ['POST'],
|
|
}
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
self.type = 'function_version'
|
|
self.storage_provider = storage_base.load_storage_provider(CONF)
|
|
self.engine_client = rpc.get_engine_client()
|
|
|
|
super(FunctionVersionsController, self).__init__(*args, **kwargs)
|
|
|
|
@tenacity.retry(
|
|
wait=tenacity.wait_fixed(1),
|
|
stop=tenacity.stop_after_attempt(30),
|
|
reraise=True,
|
|
retry=tenacity.retry_if_exception_type(exc.EtcdLockException)
|
|
)
|
|
def _create_function_version(self, project_id, function_id, **kwargs):
|
|
with etcd_util.get_function_version_lock(function_id) as lock:
|
|
if not lock.is_acquired():
|
|
raise exc.EtcdLockException(
|
|
"Etcd: failed to acquire version lock for function %s." %
|
|
function_id
|
|
)
|
|
|
|
with db_api.transaction():
|
|
# Get latest function package md5 and version number
|
|
func_db = db_api.get_function(function_id, insecure=False)
|
|
if func_db.code['source'] != constants.PACKAGE_FUNCTION:
|
|
raise exc.NotAllowedException(
|
|
"Function versioning only allowed for %s type "
|
|
"function." %
|
|
constants.PACKAGE_FUNCTION
|
|
)
|
|
|
|
l_md5 = func_db.code['md5sum']
|
|
l_version = func_db.latest_version
|
|
|
|
if len(func_db.versions) >= constants.MAX_VERSION_NUMBER:
|
|
raise exc.NotAllowedException(
|
|
'Can not exceed maximum number(%s) of versions' %
|
|
constants.MAX_VERSION_NUMBER
|
|
)
|
|
|
|
# Check if the latest package changed since last version
|
|
changed = self.storage_provider.changed_since(project_id,
|
|
function_id,
|
|
l_md5,
|
|
l_version)
|
|
if not changed:
|
|
raise exc.NotAllowedException(
|
|
'Function package not changed since the latest '
|
|
'version %s.' % l_version
|
|
)
|
|
|
|
LOG.info("Creating %s, function_id: %s, old_version: %d",
|
|
self.type, function_id, l_version)
|
|
|
|
# Create new version and copy package.
|
|
self.storage_provider.copy(project_id, function_id, l_md5,
|
|
l_version)
|
|
version = db_api.increase_function_version(function_id,
|
|
l_version,
|
|
**kwargs)
|
|
func_db.latest_version = l_version + 1
|
|
|
|
LOG.info("New version %d for function %s created.", l_version + 1,
|
|
function_id)
|
|
return version
|
|
|
|
@rest_utils.wrap_wsme_controller_exception
|
|
@wsme_pecan.wsexpose(
|
|
resources.FunctionVersion,
|
|
types.uuid,
|
|
body=resources.FunctionVersion,
|
|
status_code=201
|
|
)
|
|
def post(self, function_id, body):
|
|
"""Create a new version for the function.
|
|
|
|
Only allow to create version for package type function.
|
|
|
|
The supported boy params:
|
|
- description: Optional. The description of the new version.
|
|
"""
|
|
ctx = context.get_ctx()
|
|
acl.enforce('function_version:create', ctx)
|
|
|
|
params = body.to_dict()
|
|
values = {
|
|
'description': params.get('description'),
|
|
}
|
|
|
|
# Try to create a new function version within lock and db transaction
|
|
try:
|
|
version = self._create_function_version(
|
|
ctx.project_id, function_id, **values
|
|
)
|
|
except exc.EtcdLockException as e:
|
|
LOG.exception(str(e))
|
|
# Reraise a generic exception as the end users should not know
|
|
# the underlying details.
|
|
raise exc.QinlingException('Internal server error.')
|
|
|
|
return resources.FunctionVersion.from_db_obj(version)
|
|
|
|
@rest_utils.wrap_wsme_controller_exception
|
|
@wsme_pecan.wsexpose(resources.FunctionVersions, types.uuid)
|
|
def get_all(self, function_id):
|
|
"""Get all the versions of the given function.
|
|
|
|
Admin user can get all versions for the normal user's function.
|
|
"""
|
|
acl.enforce('function_version:get_all', context.get_ctx())
|
|
LOG.info("Getting versions for function %s.", function_id)
|
|
|
|
# Getting function and versions needs to happen in a db transaction
|
|
with db_api.transaction():
|
|
func_db = db_api.get_function(function_id)
|
|
db_versions = func_db.versions
|
|
|
|
versions = [resources.FunctionVersion.from_db_obj(v)
|
|
for v in db_versions]
|
|
|
|
return resources.FunctionVersions(function_versions=versions)
|
|
|
|
@rest_utils.wrap_pecan_controller_exception
|
|
@pecan.expose()
|
|
@pecan.expose('json')
|
|
def get(self, function_id, version):
|
|
"""Get function version or download function version package.
|
|
|
|
This method can support HTTP request using either
|
|
'Accept:application/json' or no 'Accept' header.
|
|
"""
|
|
ctx = context.get_ctx()
|
|
acl.enforce('function_version:get', ctx)
|
|
|
|
download = strutils.bool_from_string(
|
|
pecan.request.GET.get('download', False)
|
|
)
|
|
version = int(version)
|
|
|
|
version_db = db_api.get_function_version(function_id, version)
|
|
|
|
if not download:
|
|
LOG.info("Getting version %s for function %s.", version,
|
|
function_id)
|
|
pecan.override_template('json')
|
|
return resources.FunctionVersion.from_db_obj(version_db).to_dict()
|
|
|
|
LOG.info("Downloading version %s for function %s.", version,
|
|
function_id)
|
|
|
|
f = self.storage_provider.retrieve(version_db.project_id, function_id,
|
|
None, version=version)
|
|
|
|
if isinstance(f, collections.Iterable):
|
|
pecan.response.app_iter = f
|
|
else:
|
|
pecan.response.app_iter = FileIter(f)
|
|
pecan.response.headers['Content-Type'] = 'application/zip'
|
|
pecan.response.headers['Content-Disposition'] = (
|
|
'attachment; filename="%s_%s"' % (function_id, version)
|
|
)
|
|
|
|
@rest_utils.wrap_wsme_controller_exception
|
|
@wsme_pecan.wsexpose(None, types.uuid, int, status_code=204)
|
|
def delete(self, function_id, version):
|
|
"""Delete a specific function version.
|
|
|
|
- The version should not being used by any job
|
|
- The version should not being used by any webhook
|
|
- Admin user can not delete normal user's version
|
|
"""
|
|
ctx = context.get_ctx()
|
|
acl.enforce('function_version:delete', ctx)
|
|
LOG.info("Deleting version %s of function %s.", version, function_id)
|
|
|
|
with db_api.transaction():
|
|
version_db = db_api.get_function_version(function_id, version,
|
|
insecure=False)
|
|
latest_version = version_db.function.latest_version
|
|
|
|
version_jobs = db_api.get_jobs(
|
|
function_id=version_db.function_id,
|
|
function_version=version_db.version_number,
|
|
status={'nin': ['done', 'cancelled']}
|
|
)
|
|
if len(version_jobs) > 0:
|
|
raise exc.NotAllowedException(
|
|
'The function version is still associated with running '
|
|
'job(s).'
|
|
)
|
|
|
|
version_webhook = db_api.get_webhooks(
|
|
function_id=version_db.function_id,
|
|
function_version=version_db.version_number,
|
|
)
|
|
if len(version_webhook) > 0:
|
|
raise exc.NotAllowedException(
|
|
'The function version is still associated with webhook.'
|
|
)
|
|
|
|
filters = rest_utils.get_filters(
|
|
function_id=version_db.function_id,
|
|
function_version=version_db.version_number
|
|
)
|
|
version_aliases = db_api.get_function_aliases(**filters)
|
|
if len(version_aliases) > 0:
|
|
raise exc.NotAllowedException(
|
|
'The function version is still associated with alias.'
|
|
)
|
|
|
|
# Delete resources for function version
|
|
self.engine_client.delete_function(function_id, version=version)
|
|
etcd_util.delete_function(function_id, version=version)
|
|
|
|
self.storage_provider.delete(ctx.projectid, function_id, None,
|
|
version=version)
|
|
|
|
db_api.delete_function_version(function_id, version)
|
|
|
|
if latest_version == version:
|
|
version_db.function.latest_version = latest_version - 1
|
|
|
|
LOG.info("Version %s of function %s deleted.", version, function_id)
|
|
|
|
@rest_utils.wrap_wsme_controller_exception
|
|
@wsme_pecan.wsexpose(
|
|
None,
|
|
types.uuid,
|
|
int,
|
|
body=resources.ScaleInfo,
|
|
status_code=202
|
|
)
|
|
def scale_up(self, function_id, version, scale):
|
|
"""Scale up the workers for function version execution.
|
|
|
|
This is admin only operation. The load monitoring of execution
|
|
depends on the monitoring solution of underlying orchestrator.
|
|
"""
|
|
acl.enforce('function_version:scale_up', context.get_ctx())
|
|
|
|
func_db = db_api.get_function(function_id)
|
|
|
|
# If version=0, it's equivalent to /functions/<funcion-id>/scale_up
|
|
if version > 0:
|
|
db_api.get_function_version(function_id, version)
|
|
|
|
params = scale.to_dict()
|
|
|
|
LOG.info('Starting to scale up function %s(version %s), params: %s',
|
|
function_id, version, params)
|
|
|
|
self.engine_client.scaleup_function(
|
|
function_id,
|
|
runtime_id=func_db.runtime_id,
|
|
version=version,
|
|
count=params['count']
|
|
)
|
|
|
|
@rest_utils.wrap_wsme_controller_exception
|
|
@wsme_pecan.wsexpose(
|
|
None,
|
|
types.uuid,
|
|
int,
|
|
body=resources.ScaleInfo,
|
|
status_code=202
|
|
)
|
|
def scale_down(self, function_id, version, scale):
|
|
"""Scale down the workers for function version execution.
|
|
|
|
This is admin only operation. The load monitoring of execution
|
|
depends on the monitoring solution of underlying orchestrator.
|
|
"""
|
|
acl.enforce('function_version:scale_down', context.get_ctx())
|
|
|
|
db_api.get_function(function_id)
|
|
params = scale.to_dict()
|
|
|
|
# If version=0, it's equivalent to /functions/<funcion-id>/scale_down
|
|
if version > 0:
|
|
db_api.get_function_version(function_id, version)
|
|
|
|
workers = etcd_util.get_workers(function_id, version=version)
|
|
if len(workers) <= 1:
|
|
LOG.info('No need to scale down function %s(version %s)',
|
|
function_id, version)
|
|
return
|
|
|
|
LOG.info('Starting to scale down function %s(version %s), params: %s',
|
|
function_id, version, params)
|
|
self.engine_client.scaledown_function(function_id, version=version,
|
|
count=params['count'])
|
|
|
|
@rest_utils.wrap_wsme_controller_exception
|
|
@wsme_pecan.wsexpose(None, types.uuid, int, status_code=202)
|
|
def detach(self, function_id, version):
|
|
"""Detach the function version from its underlying workers.
|
|
|
|
This is admin only operation, which gives admin user a safe way to
|
|
clean up the underlying resources allocated for the function version.
|
|
"""
|
|
acl.enforce('function_version:detach', context.get_ctx())
|
|
|
|
db_api.get_function(function_id)
|
|
# If version=0, it's equivalent to /functions/<funcion-id>/detach
|
|
if version > 0:
|
|
db_api.get_function_version(function_id, version)
|
|
|
|
LOG.info('Starting to detach function %s(version %s)', function_id,
|
|
version)
|
|
|
|
# Delete allocated resources in orchestrator and etcd keys.
|
|
self.engine_client.delete_function(function_id, version=version)
|
|
etcd_util.delete_function(function_id, version=version)
|