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# Licensed to the StackStorm, Inc ('StackStorm') under one or more |
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# contributor license agreements. See the NOTICE file distributed with |
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# this work for additional information regarding copyright ownership. |
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# The ASF licenses this file to You under the Apache License, Version 2.0 |
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# (the "License"); you may not use this file except in compliance with |
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# the License. You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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from pecan import abort |
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import six |
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from mongoengine import ValidationError |
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from st2api.controllers.resource import ResourceController |
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from st2common import log as logging |
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from st2common.constants.system import SYSTEM_KV_PREFIX |
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from st2common.exceptions.keyvalue import CryptoKeyNotSetupException, InvalidScopeException |
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from st2common.models.api.keyvalue import KeyValuePairAPI |
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from st2common.models.api.base import jsexpose |
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from st2common.persistence.keyvalue import KeyValuePair |
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from st2common.services import coordination |
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http_client = six.moves.http_client |
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LOG = logging.getLogger(__name__) |
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__all__ = [ |
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'KeyValuePairController' |
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] |
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class KeyValuePairController(ResourceController): |
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""" |
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Implements the REST endpoint for managing the key value store. |
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""" |
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model = KeyValuePairAPI |
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access = KeyValuePair |
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supported_filters = { |
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'prefix': 'name__startswith', |
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'scope': 'scope' |
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} |
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def __init__(self): |
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super(KeyValuePairController, self).__init__() |
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self._coordinator = coordination.get_coordinator() |
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self.get_one_db_method = self._get_by_name |
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@jsexpose(arg_types=[str, str, bool]) |
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def get_one(self, name, scope=SYSTEM_KV_PREFIX, decrypt=False): |
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""" |
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List key by name. |
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Handle: |
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GET /keys/key1 |
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""" |
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from_model_kwargs = {'mask_secrets': not decrypt} |
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if scope: |
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kwargs = {'name': name, 'scope': scope} |
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kvp_db = super(KeyValuePairController, self)._get_all( |
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from_model_kwargs=from_model_kwargs, |
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**kwargs |
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) |
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kvp_db = kvp_db[0] if kvp_db else None |
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if not kvp_db: |
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msg = 'Key with name: %s and scope: %s not found!' % (name, scope) |
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abort(http_client.NOT_FOUND, msg) |
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return |
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else: |
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kvp_db = super(KeyValuePairController, self)._get_one_by_name_or_id( |
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name_or_id=name, |
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from_model_kwargs=from_model_kwargs |
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) |
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return kvp_db |
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@jsexpose(arg_types=[str, str, bool]) |
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def get_all(self, prefix=None, scope=SYSTEM_KV_PREFIX, decrypt=False, **kwargs): |
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""" |
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List all keys. |
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Handles requests: |
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GET /keys/ |
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""" |
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from_model_kwargs = {'mask_secrets': not decrypt} |
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kwargs['prefix'] = prefix |
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kwargs['scope'] = scope |
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kvp_dbs = super(KeyValuePairController, self)._get_all(from_model_kwargs=from_model_kwargs, |
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**kwargs) |
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return kvp_dbs |
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@jsexpose(arg_types=[str, str], body_cls=KeyValuePairAPI) |
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def put(self, name, kvp): |
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""" |
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Create a new entry or update an existing one. |
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""" |
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lock_name = self._get_lock_name_for_key(name=name) |
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# TODO: Custom permission check since the key doesn't need to exist here |
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# Note: We use lock to avoid a race |
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with self._coordinator.get_lock(lock_name): |
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existing_kvp = self._get_by_name(resource_name=name) |
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kvp.name = name |
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try: |
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kvp_db = KeyValuePairAPI.to_model(kvp) |
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if existing_kvp: |
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kvp_db.id = existing_kvp.id |
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kvp_db = KeyValuePair.add_or_update(kvp_db) |
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except (ValidationError, ValueError) as e: |
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LOG.exception('Validation failed for key value data=%s', kvp) |
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abort(http_client.BAD_REQUEST, str(e)) |
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return |
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except CryptoKeyNotSetupException as e: |
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LOG.exception(str(e)) |
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abort(http_client.BAD_REQUEST, str(e)) |
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return |
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except InvalidScopeException as e: |
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LOG.exception(str(e)) |
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abort(http_client.BAD_REQUEST, str(e)) |
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return |
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extra = {'kvp_db': kvp_db} |
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LOG.audit('KeyValuePair updated. KeyValuePair.id=%s' % (kvp_db.id), extra=extra) |
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kvp_api = KeyValuePairAPI.from_model(kvp_db) |
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return kvp_api |
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@jsexpose(arg_types=[str], status_code=http_client.NO_CONTENT) |
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def delete(self, name): |
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""" |
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Delete the key value pair. |
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Handles requests: |
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DELETE /keys/1 |
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""" |
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lock_name = self._get_lock_name_for_key(name=name) |
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# Note: We use lock to avoid a race |
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with self._coordinator.get_lock(lock_name): |
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kvp_db = self._get_by_name(resource_name=name) |
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if not kvp_db: |
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abort(http_client.NOT_FOUND) |
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return |
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LOG.debug('DELETE /keys/ lookup with name=%s found object: %s', name, kvp_db) |
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try: |
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KeyValuePair.delete(kvp_db) |
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except Exception as e: |
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LOG.exception('Database delete encountered exception during ' |
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'delete of name="%s". ', name) |
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abort(http_client.INTERNAL_SERVER_ERROR, str(e)) |
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return |
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extra = {'kvp_db': kvp_db} |
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LOG.audit('KeyValuePair deleted. KeyValuePair.id=%s' % (kvp_db.id), extra=extra) |
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def _get_lock_name_for_key(self, name): |
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""" |
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Retrieve a coordination lock name for the provided datastore item name. |
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:param name: Datastore item name (PK). |
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:type name: ``str`` |
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""" |
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lock_name = 'kvp-crud-%s' % (name) |
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return lock_name |
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StackStorm /
st2
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