/usr/lib/python2.7/dist-packages/gnocchi/rest/__init__.py is in python-gnocchi 3.0.4-3.
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The actual contents of the file can be viewed below.
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#
# Copyright © 2016 Red Hat, Inc.
# Copyright © 2014-2015 eNovance
#
# 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 itertools
import uuid
import jsonpatch
from oslo_utils import strutils
import pecan
from pecan import rest
import six
from six.moves.urllib import parse as urllib_parse
from stevedore import extension
import voluptuous
import webob.exc
import werkzeug.http
from gnocchi import aggregates
from gnocchi import archive_policy
from gnocchi import indexer
from gnocchi import json
from gnocchi import resource_type
from gnocchi import storage
from gnocchi import utils
def arg_to_list(value):
if isinstance(value, list):
return value
elif value:
return [value]
return []
def abort(status_code, detail='', headers=None, comment=None, **kw):
"""Like pecan.abort, but make sure detail is a string."""
if status_code == 404 and not detail:
raise RuntimeError("http code 404 must have 'detail' set")
return pecan.abort(status_code, six.text_type(detail),
headers, comment, **kw)
def get_user_and_project():
headers = pecan.request.headers
user_id = headers.get("X-User-Id")
project_id = headers.get("X-Project-Id")
return (user_id, project_id)
# TODO(jd) Move this to oslo.utils as I stole it from Ceilometer
def recursive_keypairs(d, separator='.'):
"""Generator that produces sequence of keypairs for nested dictionaries."""
for name, value in sorted(six.iteritems(d)):
if isinstance(value, dict):
for subname, subvalue in recursive_keypairs(value, separator):
yield ('%s%s%s' % (name, separator, subname), subvalue)
else:
yield name, value
def enforce(rule, target):
"""Return the user and project the request should be limited to.
:param rule: The rule name
:param target: The target to enforce on.
"""
headers = pecan.request.headers
user_id, project_id = get_user_and_project()
creds = {
'roles': headers.get("X-Roles", "").split(","),
'user_id': user_id,
'project_id': project_id,
'domain_id': headers.get("X-Domain-Id", ""),
}
if not isinstance(target, dict):
target = target.__dict__
# Flatten dict
target = dict(recursive_keypairs(target))
if not pecan.request.policy_enforcer.enforce(rule, target, creds):
abort(403)
def _get_list_resource_policy_filter(rule, resource_type, user, project):
try:
# Check if the policy allows the user to list any resource
enforce(rule, {
"resource_type": resource_type,
})
except webob.exc.HTTPForbidden:
policy_filter = []
try:
# Check if the policy allows the user to list resources linked
# to their project
enforce(rule, {
"resource_type": resource_type,
"project_id": project,
})
except webob.exc.HTTPForbidden:
pass
else:
policy_filter.append({"=": {"project_id": project}})
try:
# Check if the policy allows the user to list resources linked
# to their created_by_project
enforce(rule, {
"resource_type": resource_type,
"created_by_project_id": project,
})
except webob.exc.HTTPForbidden:
pass
else:
policy_filter.append({"=": {"created_by_project_id": project}})
if not policy_filter:
# We need to have at least one policy filter in place
abort(403, "Insufficient privileges")
return {"or": policy_filter}
def set_resp_location_hdr(location):
location = '%s%s' % (pecan.request.script_name, location)
# NOTE(sileht): according the pep-3333 the headers must be
# str in py2 and py3 even this is not the same thing in both
# version
# see: http://legacy.python.org/dev/peps/pep-3333/#unicode-issues
if six.PY2 and isinstance(location, six.text_type):
location = location.encode('utf-8')
location = urllib_parse.quote(location)
pecan.response.headers['Location'] = location
def deserialize(expected_content_types=None):
if expected_content_types is None:
expected_content_types = ("application/json", )
mime_type, options = werkzeug.http.parse_options_header(
pecan.request.headers.get('Content-Type'))
if mime_type not in expected_content_types:
abort(415)
try:
params = json.load(pecan.request.body_file_raw,
encoding=options.get('charset', 'ascii'))
except Exception as e:
abort(400, "Unable to decode body: " + six.text_type(e))
return params
def deserialize_and_validate(schema, required=True,
expected_content_types=None):
try:
return voluptuous.Schema(schema, required=required)(
deserialize(expected_content_types=expected_content_types))
except voluptuous.Error as e:
abort(400, "Invalid input: %s" % e)
def Timestamp(v):
t = utils.to_timestamp(v)
if t < utils.unix_universal_start:
raise ValueError("Timestamp must be after Epoch")
return t
def PositiveOrNullInt(value):
value = int(value)
if value < 0:
raise ValueError("Value must be positive")
return value
def PositiveNotNullInt(value):
value = int(value)
if value <= 0:
raise ValueError("Value must be positive and not null")
return value
def Timespan(value):
return utils.to_timespan(value).total_seconds()
def get_header_option(name, params):
type, options = werkzeug.http.parse_options_header(
pecan.request.headers.get('Accept'))
try:
return strutils.bool_from_string(
options.get(name, params.pop(name, 'false')),
strict=True)
except ValueError as e:
method = 'Accept' if name in options else 'query'
abort(
400,
"Unable to parse %s value in %s: %s"
% (name, method, six.text_type(e)))
def get_history(params):
return get_header_option('history', params)
def get_details(params):
return get_header_option('details', params)
RESOURCE_DEFAULT_PAGINATION = ['revision_start:asc',
'started_at:asc']
METRIC_DEFAULT_PAGINATION = ['id:asc']
def get_pagination_options(params, default):
max_limit = pecan.request.conf.api.max_limit
limit = params.get('limit', max_limit)
marker = params.get('marker')
sorts = params.get('sort', default)
if not isinstance(sorts, list):
sorts = [sorts]
try:
limit = PositiveNotNullInt(limit)
except ValueError:
abort(400, "Invalid 'limit' value: %s" % params.get('limit'))
limit = min(limit, max_limit)
return {'limit': limit,
'marker': marker,
'sorts': sorts}
def ValidAggMethod(value):
value = six.text_type(value)
if value in archive_policy.ArchivePolicy.VALID_AGGREGATION_METHODS_VALUES:
return value
raise ValueError("Invalid aggregation method")
class ArchivePolicyController(rest.RestController):
def __init__(self, archive_policy):
self.archive_policy = archive_policy
@pecan.expose('json')
def get(self):
ap = pecan.request.indexer.get_archive_policy(self.archive_policy)
if ap:
enforce("get archive policy", ap)
return ap
abort(404, indexer.NoSuchArchivePolicy(self.archive_policy))
@pecan.expose('json')
def patch(self):
ap = pecan.request.indexer.get_archive_policy(self.archive_policy)
if not ap:
abort(404, indexer.NoSuchArchivePolicy(self.archive_policy))
enforce("update archive policy", ap)
body = deserialize_and_validate(voluptuous.Schema({
voluptuous.Required("definition"):
voluptuous.All([{
"granularity": Timespan,
"points": PositiveNotNullInt,
"timespan": Timespan}], voluptuous.Length(min=1)),
}))
# Validate the data
try:
ap_items = [archive_policy.ArchivePolicyItem(**item) for item in
body['definition']]
except ValueError as e:
abort(400, e)
try:
return pecan.request.indexer.update_archive_policy(
self.archive_policy, ap_items)
except indexer.UnsupportedArchivePolicyChange as e:
abort(400, e)
@pecan.expose()
def delete(self):
# NOTE(jd) I don't think there's any point in fetching and passing the
# archive policy here, as the rule is probably checking the actual role
# of the user, not the content of the AP.
enforce("delete archive policy", {})
try:
pecan.request.indexer.delete_archive_policy(self.archive_policy)
except indexer.NoSuchArchivePolicy as e:
abort(404, e)
except indexer.ArchivePolicyInUse as e:
abort(400, e)
class ArchivePoliciesController(rest.RestController):
@pecan.expose()
def _lookup(self, archive_policy, *remainder):
return ArchivePolicyController(archive_policy), remainder
@pecan.expose('json')
def post(self):
# NOTE(jd): Initialize this one at run-time because we rely on conf
conf = pecan.request.conf
enforce("create archive policy", {})
ArchivePolicySchema = voluptuous.Schema({
voluptuous.Required("name"): six.text_type,
voluptuous.Required("back_window", default=0): PositiveOrNullInt,
voluptuous.Required(
"aggregation_methods",
default=set(conf.archive_policy.default_aggregation_methods)):
[ValidAggMethod],
voluptuous.Required("definition"):
voluptuous.All([{
"granularity": Timespan,
"points": PositiveNotNullInt,
"timespan": Timespan,
}], voluptuous.Length(min=1)),
})
body = deserialize_and_validate(ArchivePolicySchema)
# Validate the data
try:
ap = archive_policy.ArchivePolicy.from_dict(body)
except ValueError as e:
abort(400, e)
enforce("create archive policy", ap)
try:
ap = pecan.request.indexer.create_archive_policy(ap)
except indexer.ArchivePolicyAlreadyExists as e:
abort(409, e)
location = "/archive_policy/" + ap.name
set_resp_location_hdr(location)
pecan.response.status = 201
return ap
@pecan.expose('json')
def get_all(self):
enforce("list archive policy", {})
return pecan.request.indexer.list_archive_policies()
class ArchivePolicyRulesController(rest.RestController):
@pecan.expose('json')
def post(self):
enforce("create archive policy rule", {})
ArchivePolicyRuleSchema = voluptuous.Schema({
voluptuous.Required("name"): six.text_type,
voluptuous.Required("metric_pattern"): six.text_type,
voluptuous.Required("archive_policy_name"): six.text_type,
})
body = deserialize_and_validate(ArchivePolicyRuleSchema)
enforce("create archive policy rule", body)
try:
ap = pecan.request.indexer.create_archive_policy_rule(
body['name'], body['metric_pattern'],
body['archive_policy_name']
)
except indexer.ArchivePolicyRuleAlreadyExists as e:
abort(409, e)
location = "/archive_policy_rule/" + ap.name
set_resp_location_hdr(location)
pecan.response.status = 201
return ap
@pecan.expose('json')
def get_one(self, name):
ap = pecan.request.indexer.get_archive_policy_rule(name)
if ap:
enforce("get archive policy rule", ap)
return ap
abort(404, indexer.NoSuchArchivePolicyRule(name))
@pecan.expose('json')
def get_all(self):
enforce("list archive policy rule", {})
return pecan.request.indexer.list_archive_policy_rules()
@pecan.expose()
def delete(self, name):
# NOTE(jd) I don't think there's any point in fetching and passing the
# archive policy rule here, as the rule is probably checking the actual
# role of the user, not the content of the AP rule.
enforce("delete archive policy rule", {})
try:
pecan.request.indexer.delete_archive_policy_rule(name)
except indexer.NoSuchArchivePolicyRule as e:
abort(404, e)
except indexer.ArchivePolicyRuleInUse as e:
abort(400, e)
def MeasureSchema(m):
# NOTE(sileht): don't use voluptuous for performance reasons
try:
value = float(m['value'])
except Exception:
abort(400, "Invalid input for a value")
try:
timestamp = Timestamp(m['timestamp'])
except Exception as e:
abort(400,
"Invalid input for timestamp `%s': %s" % (m['timestamp'], e))
return storage.Measure(timestamp, value)
class MetricController(rest.RestController):
_custom_actions = {
'measures': ['POST', 'GET']
}
def __init__(self, metric):
self.metric = metric
mgr = extension.ExtensionManager(namespace='gnocchi.aggregates',
invoke_on_load=True)
self.custom_agg = dict((x.name, x.obj) for x in mgr)
def enforce_metric(self, rule):
enforce(rule, json.to_primitive(self.metric))
@pecan.expose('json')
def get_all(self):
self.enforce_metric("get metric")
return self.metric
@pecan.expose()
def post_measures(self):
self.enforce_metric("post measures")
params = deserialize()
if not isinstance(params, list):
abort(400, "Invalid input for measures")
if params:
pecan.request.storage.add_measures(
self.metric, six.moves.map(MeasureSchema, params))
pecan.response.status = 202
@pecan.expose('json')
def get_measures(self, start=None, stop=None, aggregation='mean',
granularity=None, refresh=False, **param):
self.enforce_metric("get measures")
if not (aggregation
in archive_policy.ArchivePolicy.VALID_AGGREGATION_METHODS
or aggregation in self.custom_agg):
msg = '''Invalid aggregation value %(agg)s, must be one of %(std)s
or %(custom)s'''
abort(400, msg % dict(
agg=aggregation,
std=archive_policy.ArchivePolicy.VALID_AGGREGATION_METHODS,
custom=str(self.custom_agg.keys())))
if start is not None:
try:
start = Timestamp(start)
except Exception:
abort(400, "Invalid value for start")
if stop is not None:
try:
stop = Timestamp(stop)
except Exception:
abort(400, "Invalid value for stop")
if strutils.bool_from_string(refresh):
pecan.request.storage.process_new_measures(
pecan.request.indexer, [six.text_type(self.metric.id)], True)
try:
if aggregation in self.custom_agg:
measures = self.custom_agg[aggregation].compute(
pecan.request.storage, self.metric,
start, stop, **param)
else:
measures = pecan.request.storage.get_measures(
self.metric, start, stop, aggregation,
float(granularity) if granularity is not None else None)
# Replace timestamp keys by their string versions
return [(timestamp.isoformat(), offset, v)
for timestamp, offset, v in measures]
except (storage.MetricDoesNotExist,
storage.GranularityDoesNotExist,
storage.AggregationDoesNotExist) as e:
abort(404, e)
except aggregates.CustomAggFailure as e:
abort(400, e)
@pecan.expose()
def delete(self):
self.enforce_metric("delete metric")
try:
pecan.request.indexer.delete_metric(self.metric.id)
except indexer.NoSuchMetric as e:
abort(404, e)
class MetricsController(rest.RestController):
@pecan.expose()
def _lookup(self, id, *remainder):
try:
metric_id = uuid.UUID(id)
except ValueError:
abort(404, indexer.NoSuchMetric(id))
metrics = pecan.request.indexer.list_metrics(
id=metric_id, details=True)
if not metrics:
abort(404, indexer.NoSuchMetric(id))
return MetricController(metrics[0]), remainder
_MetricSchema = voluptuous.Schema({
"user_id": six.text_type,
"project_id": six.text_type,
"archive_policy_name": six.text_type,
"name": six.text_type,
voluptuous.Optional("unit"):
voluptuous.All(six.text_type, voluptuous.Length(max=31)),
})
# NOTE(jd) Define this method as it was a voluptuous schema – it's just a
# smarter version of a voluptuous schema, no?
@classmethod
def MetricSchema(cls, definition):
# First basic validation
definition = cls._MetricSchema(definition)
archive_policy_name = definition.get('archive_policy_name')
name = definition.get('name')
if archive_policy_name is None:
try:
ap = pecan.request.indexer.get_archive_policy_for_metric(name)
except indexer.NoArchivePolicyRuleMatch:
# NOTE(jd) Since this is a schema-like function, we
# should/could raise ValueError, but if we do so, voluptuous
# just returns a "invalid value" with no useful message – so we
# prefer to use abort() to make sure the user has the right
# error message
abort(400, "No archive policy name specified "
"and no archive policy rule found matching "
"the metric name %s" % name)
else:
definition['archive_policy_name'] = ap.name
user_id, project_id = get_user_and_project()
enforce("create metric", {
"created_by_user_id": user_id,
"created_by_project_id": project_id,
"user_id": definition.get('user_id'),
"project_id": definition.get('project_id'),
"archive_policy_name": archive_policy_name,
"name": name,
"unit": definition.get('unit'),
})
return definition
@pecan.expose('json')
def post(self):
user, project = get_user_and_project()
body = deserialize_and_validate(self.MetricSchema)
try:
m = pecan.request.indexer.create_metric(
uuid.uuid4(),
user, project,
name=body.get('name'),
unit=body.get('unit'),
archive_policy_name=body['archive_policy_name'])
except indexer.NoSuchArchivePolicy as e:
abort(400, e)
set_resp_location_hdr("/metric/" + str(m.id))
pecan.response.status = 201
return m
@staticmethod
@pecan.expose('json')
def get_all(**kwargs):
try:
enforce("list all metric", {})
except webob.exc.HTTPForbidden:
enforce("list metric", {})
user_id, project_id = get_user_and_project()
provided_user_id = kwargs.get('user_id')
provided_project_id = kwargs.get('project_id')
if ((provided_user_id and user_id != provided_user_id)
or (provided_project_id and project_id != provided_project_id)):
abort(
403, "Insufficient privileges to filter by user/project")
else:
user_id = kwargs.get('user_id')
project_id = kwargs.get('project_id')
attr_filter = {}
if user_id is not None:
attr_filter['created_by_user_id'] = user_id
if project_id is not None:
attr_filter['created_by_project_id'] = project_id
attr_filter.update(get_pagination_options(
kwargs, METRIC_DEFAULT_PAGINATION))
try:
return pecan.request.indexer.list_metrics(**attr_filter)
except indexer.IndexerException as e:
abort(400, e)
_MetricsSchema = voluptuous.Schema({
six.text_type: voluptuous.Any(utils.UUID,
MetricsController.MetricSchema),
})
def MetricsSchema(data):
# NOTE(jd) Before doing any kind of validation, copy the metric name
# into the metric definition. This is required so we have the name
# available when doing the metric validation with its own MetricSchema,
# and so we can do things such as applying archive policy rules.
if isinstance(data, dict):
for metric_name, metric_def in six.iteritems(data):
if isinstance(metric_def, dict):
metric_def['name'] = metric_name
return _MetricsSchema(data)
class NamedMetricController(rest.RestController):
def __init__(self, resource_id, resource_type):
self.resource_id = resource_id
self.resource_type = resource_type
@pecan.expose()
def _lookup(self, name, *remainder):
details = True if pecan.request.method == 'GET' else False
m = pecan.request.indexer.list_metrics(details=details,
name=name,
resource_id=self.resource_id)
if m:
return MetricController(m[0]), remainder
resource = pecan.request.indexer.get_resource(self.resource_type,
self.resource_id)
if resource:
abort(404, indexer.NoSuchMetric(name))
else:
abort(404, indexer.NoSuchResource(self.resource_id))
@pecan.expose()
def post(self):
resource = pecan.request.indexer.get_resource(
self.resource_type, self.resource_id)
if not resource:
abort(404, indexer.NoSuchResource(self.resource_id))
enforce("update resource", resource)
metrics = deserialize_and_validate(MetricsSchema)
try:
pecan.request.indexer.update_resource(
self.resource_type, self.resource_id, metrics=metrics,
append_metrics=True,
create_revision=False)
except (indexer.NoSuchMetric,
indexer.NoSuchArchivePolicy,
ValueError) as e:
abort(400, e)
except indexer.NamedMetricAlreadyExists as e:
abort(409, e)
except indexer.NoSuchResource as e:
abort(404, e)
@pecan.expose('json')
def get_all(self):
resource = pecan.request.indexer.get_resource(
self.resource_type, self.resource_id)
if not resource:
abort(404, indexer.NoSuchResource(self.resource_id))
enforce("get resource", resource)
return pecan.request.indexer.list_metrics(resource_id=self.resource_id)
class ResourceHistoryController(rest.RestController):
def __init__(self, resource_id, resource_type):
self.resource_id = resource_id
self.resource_type = resource_type
@pecan.expose('json')
def get(self, **kwargs):
details = get_details(kwargs)
pagination_opts = get_pagination_options(
kwargs, RESOURCE_DEFAULT_PAGINATION)
resource = pecan.request.indexer.get_resource(
self.resource_type, self.resource_id)
if not resource:
abort(404, indexer.NoSuchResource(self.resource_id))
enforce("get resource", resource)
try:
# FIXME(sileht): next API version should returns
# {'resources': [...], 'links': [ ... pagination rel ...]}
return pecan.request.indexer.list_resources(
self.resource_type,
attribute_filter={"=": {"id": self.resource_id}},
details=details,
history=True,
**pagination_opts
)
except indexer.IndexerException as e:
abort(400, e)
def etag_precondition_check(obj):
etag, lastmodified = obj.etag, obj.lastmodified
# NOTE(sileht): Checks and order come from rfc7232
# in webob, the '*' and the absent of the header is handled by
# if_match.__contains__() and if_none_match.__contains__()
# and are identique...
if etag not in pecan.request.if_match:
abort(412)
elif (not pecan.request.environ.get("HTTP_IF_MATCH")
and pecan.request.if_unmodified_since
and pecan.request.if_unmodified_since < lastmodified):
abort(412)
if etag in pecan.request.if_none_match:
if pecan.request.method in ['GET', 'HEAD']:
abort(304)
else:
abort(412)
elif (not pecan.request.environ.get("HTTP_IF_NONE_MATCH")
and pecan.request.if_modified_since
and (pecan.request.if_modified_since >=
lastmodified)
and pecan.request.method in ['GET', 'HEAD']):
abort(304)
def etag_set_headers(obj):
pecan.response.etag = obj.etag
pecan.response.last_modified = obj.lastmodified
def AttributesPath(value):
if value.startswith("/attributes"):
return value
raise ValueError("Only attributes can be modified")
ResourceTypeJsonPatchSchema = voluptuous.Schema([{
"op": voluptuous.Any("add", "remove"),
"path": AttributesPath,
voluptuous.Optional("value"): dict,
}])
class ResourceTypeController(rest.RestController):
def __init__(self, name):
self._name = name
@pecan.expose('json')
def get(self):
try:
rt = pecan.request.indexer.get_resource_type(self._name)
except indexer.NoSuchResourceType as e:
abort(404, e)
enforce("get resource type", rt)
return rt
@pecan.expose('json')
def patch(self):
# NOTE(sileht): should we check for "application/json-patch+json"
# Content-Type ?
try:
rt = pecan.request.indexer.get_resource_type(self._name)
except indexer.NoSuchResourceType as e:
abort(404, e)
enforce("update resource type", rt)
# Ensure this is a valid jsonpatch dict
patch = deserialize_and_validate(
ResourceTypeJsonPatchSchema,
expected_content_types=["application/json-patch+json"])
# Add new attributes to the resource type
rt_json_current = rt.jsonify()
try:
rt_json_next = jsonpatch.apply_patch(rt_json_current, patch)
except jsonpatch.JsonPatchException as e:
abort(400, e)
del rt_json_next['state']
# Validate that the whole new resource_type is valid
schema = pecan.request.indexer.get_resource_type_schema()
try:
rt_json_next = voluptuous.Schema(schema, required=True)(
rt_json_next)
except voluptuous.Error as e:
abort(400, "Invalid input: %s" % e)
# Get only newly formatted and deleted attributes
add_attrs = {k: v for k, v in rt_json_next["attributes"].items()
if k not in rt_json_current["attributes"]}
del_attrs = [k for k in rt_json_current["attributes"]
if k not in rt_json_next["attributes"]]
if not add_attrs and not del_attrs:
# NOTE(sileht): just returns the resource, the asked changes
# just do nothing
return rt
try:
add_attrs = schema.attributes_from_dict(add_attrs)
except resource_type.InvalidResourceAttributeName as e:
abort(400, e)
# TODO(sileht): Add a default field on an attribute
# to be able to fill non-nullable column on sql side.
# And obviousy remove this limitation
for attr in add_attrs:
if attr.required:
abort(400, ValueError("Adding required attributes is not yet "
"possible."))
try:
return pecan.request.indexer.update_resource_type(
self._name, add_attributes=add_attrs,
del_attributes=del_attrs)
except indexer.NoSuchResourceType as e:
abort(400, e)
@pecan.expose()
def delete(self):
try:
pecan.request.indexer.get_resource_type(self._name)
except indexer.NoSuchResourceType as e:
abort(404, e)
enforce("delete resource type", resource_type)
try:
pecan.request.indexer.delete_resource_type(self._name)
except (indexer.NoSuchResourceType,
indexer.ResourceTypeInUse) as e:
abort(400, e)
class ResourceTypesController(rest.RestController):
@pecan.expose()
def _lookup(self, name, *remainder):
return ResourceTypeController(name), remainder
@pecan.expose('json')
def post(self):
schema = pecan.request.indexer.get_resource_type_schema()
body = deserialize_and_validate(schema)
body["state"] = "creating"
try:
rt = schema.resource_type_from_dict(**body)
except resource_type.InvalidResourceAttributeName as e:
abort(400, e)
except resource_type.InvalidResourceAttributeValue as e:
abort(400, e)
enforce("create resource type", body)
try:
rt = pecan.request.indexer.create_resource_type(rt)
except indexer.ResourceTypeAlreadyExists as e:
abort(409, e)
set_resp_location_hdr("/resource_type/" + rt.name)
pecan.response.status = 201
return rt
@pecan.expose('json')
def get_all(self, **kwargs):
enforce("list resource type", {})
try:
return pecan.request.indexer.list_resource_types()
except indexer.IndexerException as e:
abort(400, e)
def ResourceSchema(schema):
base_schema = {
voluptuous.Optional('started_at'): Timestamp,
voluptuous.Optional('ended_at'): Timestamp,
voluptuous.Optional('user_id'): voluptuous.Any(None, six.text_type),
voluptuous.Optional('project_id'): voluptuous.Any(None, six.text_type),
voluptuous.Optional('metrics'): MetricsSchema,
}
base_schema.update(schema)
return base_schema
class ResourceController(rest.RestController):
def __init__(self, resource_type, id):
self._resource_type = resource_type
try:
self.id = utils.ResourceUUID(id)
except ValueError:
abort(404, indexer.NoSuchResource(id))
self.metric = NamedMetricController(str(self.id), self._resource_type)
self.history = ResourceHistoryController(str(self.id),
self._resource_type)
@pecan.expose('json')
def get(self):
resource = pecan.request.indexer.get_resource(
self._resource_type, self.id, with_metrics=True)
if resource:
enforce("get resource", resource)
etag_precondition_check(resource)
etag_set_headers(resource)
return resource
abort(404, indexer.NoSuchResource(self.id))
@pecan.expose('json')
def patch(self):
resource = pecan.request.indexer.get_resource(
self._resource_type, self.id, with_metrics=True)
if not resource:
abort(404, indexer.NoSuchResource(self.id))
enforce("update resource", resource)
etag_precondition_check(resource)
body = deserialize_and_validate(
schema_for(self._resource_type),
required=False)
if len(body) == 0:
etag_set_headers(resource)
return resource
for k, v in six.iteritems(body):
if k != 'metrics' and getattr(resource, k) != v:
create_revision = True
break
else:
if 'metrics' not in body:
# No need to go further, we assume the db resource
# doesn't change between the get and update
return resource
create_revision = False
try:
resource = pecan.request.indexer.update_resource(
self._resource_type,
self.id,
create_revision=create_revision,
**body)
except (indexer.NoSuchMetric,
indexer.NoSuchArchivePolicy,
ValueError) as e:
abort(400, e)
except indexer.NoSuchResource as e:
abort(404, e)
etag_set_headers(resource)
return resource
@pecan.expose()
def delete(self):
resource = pecan.request.indexer.get_resource(
self._resource_type, self.id)
if not resource:
abort(404, indexer.NoSuchResource(self.id))
enforce("delete resource", resource)
etag_precondition_check(resource)
try:
pecan.request.indexer.delete_resource(self.id)
except indexer.NoSuchResource as e:
abort(404, e)
def schema_for(resource_type):
resource_type = pecan.request.indexer.get_resource_type(resource_type)
return ResourceSchema(resource_type.schema)
def ResourceID(value):
return (six.text_type(value), utils.ResourceUUID(value))
class ResourcesController(rest.RestController):
def __init__(self, resource_type):
self._resource_type = resource_type
@pecan.expose()
def _lookup(self, id, *remainder):
return ResourceController(self._resource_type, id), remainder
@pecan.expose('json')
def post(self):
# NOTE(sileht): we need to copy the dict because when change it
# and we don't want that next patch call have the "id"
schema = dict(schema_for(self._resource_type))
schema["id"] = ResourceID
body = deserialize_and_validate(schema)
body["original_resource_id"], body["id"] = body["id"]
target = {
"resource_type": self._resource_type,
}
target.update(body)
enforce("create resource", target)
user, project = get_user_and_project()
rid = body['id']
del body['id']
try:
resource = pecan.request.indexer.create_resource(
self._resource_type, rid, user, project,
**body)
except (ValueError,
indexer.NoSuchMetric,
indexer.NoSuchArchivePolicy) as e:
abort(400, e)
except indexer.ResourceAlreadyExists as e:
abort(409, e)
set_resp_location_hdr("/resource/"
+ self._resource_type + "/"
+ six.text_type(resource.id))
etag_set_headers(resource)
pecan.response.status = 201
return resource
@pecan.expose('json')
def get_all(self, **kwargs):
details = get_details(kwargs)
history = get_history(kwargs)
pagination_opts = get_pagination_options(
kwargs, RESOURCE_DEFAULT_PAGINATION)
user, project = get_user_and_project()
policy_filter = _get_list_resource_policy_filter(
"list resource", self._resource_type, user, project)
try:
# FIXME(sileht): next API version should returns
# {'resources': [...], 'links': [ ... pagination rel ...]}
return pecan.request.indexer.list_resources(
self._resource_type,
attribute_filter=policy_filter,
details=details,
history=history,
**pagination_opts
)
except indexer.IndexerException as e:
abort(400, e)
@pecan.expose('json')
def delete(self, **kwargs):
# NOTE(sileht): Don't allow empty filter, this is going to delete
# the entire database.
attr_filter = deserialize_and_validate(
SearchResourceTypeController.ResourceSearchSchema)
# the voluptuous checks everything, but it is better to
# have this here.
if not attr_filter:
abort(400, "caution: the query can not be empty, or it will \
delete entire database")
user, project = get_user_and_project()
policy_filter = _get_list_resource_policy_filter(
"delete resources", self._resource_type, user, project)
if policy_filter:
attr_filter = {"and": [policy_filter, attr_filter]}
try:
delete_num = pecan.request.indexer.delete_resources(
self._resource_type, attribute_filter=attr_filter)
except indexer.IndexerException as e:
abort(400, e)
return {"deleted": delete_num}
class ResourcesByTypeController(rest.RestController):
@pecan.expose('json')
def get_all(self):
return dict(
(rt.name,
pecan.request.application_url + '/resource/' + rt.name)
for rt in pecan.request.indexer.list_resource_types())
@pecan.expose()
def _lookup(self, resource_type, *remainder):
try:
pecan.request.indexer.get_resource_type(resource_type)
except indexer.NoSuchResourceType as e:
abort(404, e)
return ResourcesController(resource_type), remainder
def _ResourceSearchSchema(v):
"""Helper method to indirect the recursivity of the search schema"""
return SearchResourceTypeController.ResourceSearchSchema(v)
class SearchResourceTypeController(rest.RestController):
def __init__(self, resource_type):
self._resource_type = resource_type
ResourceSearchSchema = voluptuous.Schema(
voluptuous.All(
voluptuous.Length(min=1, max=1),
{
voluptuous.Any(
u"=", u"==", u"eq",
u"<", u"lt",
u">", u"gt",
u"<=", u"≤", u"le",
u">=", u"≥", u"ge",
u"!=", u"≠", u"ne",
u"in",
u"like",
): voluptuous.All(voluptuous.Length(min=1, max=1), dict),
voluptuous.Any(
u"and", u"∨",
u"or", u"∧",
u"not",
): voluptuous.All(
[_ResourceSearchSchema], voluptuous.Length(min=1)
)
}
)
)
def _search(self, **kwargs):
if pecan.request.body:
attr_filter = deserialize_and_validate(self.ResourceSearchSchema)
else:
attr_filter = None
details = get_details(kwargs)
history = get_history(kwargs)
pagination_opts = get_pagination_options(
kwargs, RESOURCE_DEFAULT_PAGINATION)
user, project = get_user_and_project()
policy_filter = _get_list_resource_policy_filter(
"search resource", self._resource_type, user, project)
if policy_filter:
if attr_filter:
attr_filter = {"and": [
policy_filter,
attr_filter
]}
else:
attr_filter = policy_filter
return pecan.request.indexer.list_resources(
self._resource_type,
attribute_filter=attr_filter,
details=details,
history=history,
**pagination_opts)
@pecan.expose('json')
def post(self, **kwargs):
try:
return self._search(**kwargs)
except indexer.IndexerException as e:
abort(400, e)
class SearchResourceController(rest.RestController):
@pecan.expose()
def _lookup(self, resource_type, *remainder):
try:
pecan.request.indexer.get_resource_type(resource_type)
except indexer.NoSuchResourceType as e:
abort(404, e)
return SearchResourceTypeController(resource_type), remainder
def _MetricSearchSchema(v):
"""Helper method to indirect the recursivity of the search schema"""
return SearchMetricController.MetricSearchSchema(v)
def _MetricSearchOperationSchema(v):
"""Helper method to indirect the recursivity of the search schema"""
return SearchMetricController.MetricSearchOperationSchema(v)
class SearchMetricController(rest.RestController):
MetricSearchOperationSchema = voluptuous.Schema(
voluptuous.All(
voluptuous.Length(min=1, max=1),
{
voluptuous.Any(
u"=", u"==", u"eq",
u"<", u"lt",
u">", u"gt",
u"<=", u"≤", u"le",
u">=", u"≥", u"ge",
u"!=", u"≠", u"ne",
u"%", u"mod",
u"+", u"add",
u"-", u"sub",
u"*", u"×", u"mul",
u"/", u"÷", u"div",
u"**", u"^", u"pow",
): voluptuous.Any(
float, int,
voluptuous.All(
[float, int,
voluptuous.Any(_MetricSearchOperationSchema)],
voluptuous.Length(min=2, max=2),
),
),
},
)
)
MetricSearchSchema = voluptuous.Schema(
voluptuous.Any(
MetricSearchOperationSchema,
voluptuous.All(
voluptuous.Length(min=1, max=1),
{
voluptuous.Any(
u"and", u"∨",
u"or", u"∧",
u"not",
): [_MetricSearchSchema],
}
)
)
)
@pecan.expose('json')
def post(self, metric_id, start=None, stop=None, aggregation='mean'):
metrics = pecan.request.indexer.list_metrics(
ids=arg_to_list(metric_id))
for metric in metrics:
enforce("search metric", metric)
if not pecan.request.body:
abort(400, "No query specified in body")
query = deserialize_and_validate(self.MetricSearchSchema)
if start is not None:
try:
start = Timestamp(start)
except Exception:
abort(400, "Invalid value for start")
if stop is not None:
try:
stop = Timestamp(stop)
except Exception:
abort(400, "Invalid value for stop")
try:
return {
str(metric.id): values
for metric, values in six.iteritems(
pecan.request.storage.search_value(
metrics, query, start, stop, aggregation)
)
}
except storage.InvalidQuery as e:
abort(400, e)
class ResourcesMetricsMeasuresBatchController(rest.RestController):
MeasuresBatchSchema = voluptuous.Schema(
{utils.ResourceUUID: {six.text_type: [MeasureSchema]}}
)
@pecan.expose()
def post(self):
body = deserialize_and_validate(self.MeasuresBatchSchema)
known_metrics = []
unknown_metrics = []
for resource_id in body:
names = body[resource_id].keys()
metrics = pecan.request.indexer.list_metrics(
names=names, resource_id=resource_id)
if len(names) != len(metrics):
known_names = [m.name for m in metrics]
unknown_metrics.extend(
["%s/%s" % (six.text_type(resource_id), m)
for m in names if m not in known_names])
known_metrics.extend(metrics)
if unknown_metrics:
abort(400, "Unknown metrics: %s" % ", ".join(
sorted(unknown_metrics)))
for metric in known_metrics:
enforce("post measures", metric)
for metric in known_metrics:
measures = body[metric.resource_id][metric.name]
pecan.request.storage.add_measures(metric, measures)
pecan.response.status = 202
class MetricsMeasuresBatchController(rest.RestController):
# NOTE(sileht): we don't allow to mix both formats
# to not have to deal with id collision that can
# occurs between a metric_id and a resource_id.
# Because while json allow duplicate keys in dict payload
# only the last key will be retain by json python module to
# build the python dict.
MeasuresBatchSchema = voluptuous.Schema(
{utils.UUID: [MeasureSchema]}
)
@pecan.expose()
def post(self):
body = deserialize_and_validate(self.MeasuresBatchSchema)
metrics = pecan.request.indexer.list_metrics(ids=body.keys())
if len(metrics) != len(body):
missing_metrics = sorted(set(body) - set(m.id for m in metrics))
abort(400, "Unknown metrics: %s" % ", ".join(
six.moves.map(str, missing_metrics)))
for metric in metrics:
enforce("post measures", metric)
for metric in metrics:
pecan.request.storage.add_measures(metric, body[metric.id])
pecan.response.status = 202
class SearchController(object):
resource = SearchResourceController()
metric = SearchMetricController()
class AggregationResourceController(rest.RestController):
def __init__(self, resource_type, metric_name):
self.resource_type = resource_type
self.metric_name = metric_name
@pecan.expose('json')
def post(self, start=None, stop=None, aggregation='mean',
reaggregation=None, granularity=None, needed_overlap=100.0,
groupby=None, refresh=False):
# First, set groupby in the right format: a sorted list of unique
# strings.
groupby = sorted(set(arg_to_list(groupby)))
# NOTE(jd) Sort by groupby so we are sure we do not return multiple
# groups when using itertools.groupby later.
try:
resources = SearchResourceTypeController(
self.resource_type)._search(sort=groupby)
except indexer.InvalidPagination:
abort(400, "Invalid groupby attribute")
except indexer.IndexerException as e:
abort(400, e)
if resources is None:
return []
if not groupby:
metrics = list(filter(None,
(r.get_metric(self.metric_name)
for r in resources)))
return AggregationController.get_cross_metric_measures_from_objs(
metrics, start, stop, aggregation, reaggregation,
granularity, needed_overlap, refresh)
def groupper(r):
return tuple((attr, r[attr]) for attr in groupby)
results = []
for key, resources in itertools.groupby(resources, groupper):
metrics = list(filter(None,
(r.get_metric(self.metric_name)
for r in resources)))
results.append({
"group": dict(key),
"measures": AggregationController.get_cross_metric_measures_from_objs( # noqa
metrics, start, stop, aggregation, reaggregation,
granularity, needed_overlap, refresh)
})
return results
class AggregationController(rest.RestController):
_custom_actions = {
'metric': ['GET'],
}
@pecan.expose()
def _lookup(self, object_type, resource_type, key, metric_name,
*remainder):
if object_type != "resource" or key != "metric":
# NOTE(sileht): we want the raw 404 message here
# so use directly pecan
pecan.abort(404)
try:
pecan.request.indexer.get_resource_type(resource_type)
except indexer.NoSuchResourceType as e:
abort(404, e)
return AggregationResourceController(resource_type,
metric_name), remainder
@staticmethod
def get_cross_metric_measures_from_objs(metrics, start=None, stop=None,
aggregation='mean',
reaggregation=None,
granularity=None,
needed_overlap=100.0,
refresh=False):
try:
needed_overlap = float(needed_overlap)
except ValueError:
abort(400, 'needed_overlap must be a number')
if start is not None:
try:
start = Timestamp(start)
except Exception:
abort(400, "Invalid value for start")
if stop is not None:
try:
stop = Timestamp(stop)
except Exception:
abort(400, "Invalid value for stop")
if (aggregation
not in archive_policy.ArchivePolicy.VALID_AGGREGATION_METHODS):
abort(
400,
'Invalid aggregation value %s, must be one of %s'
% (aggregation,
archive_policy.ArchivePolicy.VALID_AGGREGATION_METHODS))
for metric in metrics:
enforce("get metric", metric)
number_of_metrics = len(metrics)
if number_of_metrics == 0:
return []
if granularity is not None:
try:
granularity = float(granularity)
except ValueError as e:
abort(400, "granularity must be a float: %s" % e)
try:
if strutils.bool_from_string(refresh):
pecan.request.storage.process_new_measures(
pecan.request.indexer,
[six.text_type(m.id) for m in metrics], True)
if number_of_metrics == 1:
# NOTE(sileht): don't do the aggregation if we only have one
# metric
measures = pecan.request.storage.get_measures(
metrics[0], start, stop, aggregation,
granularity)
else:
measures = pecan.request.storage.get_cross_metric_measures(
metrics, start, stop, aggregation,
reaggregation,
granularity,
needed_overlap)
# Replace timestamp keys by their string versions
return [(timestamp.isoformat(), offset, v)
for timestamp, offset, v in measures]
except storage.MetricUnaggregatable as e:
abort(400, ("One of the metrics being aggregated doesn't have "
"matching granularity: %s") % str(e))
except storage.MetricDoesNotExist as e:
abort(404, e)
except storage.AggregationDoesNotExist as e:
abort(404, e)
@pecan.expose('json')
def get_metric(self, metric=None, start=None, stop=None,
aggregation='mean', reaggregation=None, granularity=None,
needed_overlap=100.0, refresh=False):
# Check RBAC policy
metric_ids = arg_to_list(metric)
metrics = pecan.request.indexer.list_metrics(ids=metric_ids)
missing_metric_ids = (set(metric_ids)
- set(six.text_type(m.id) for m in metrics))
if missing_metric_ids:
# Return one of the missing one in the error
abort(404, storage.MetricDoesNotExist(
missing_metric_ids.pop()))
return self.get_cross_metric_measures_from_objs(
metrics, start, stop, aggregation, reaggregation,
granularity, needed_overlap, refresh)
class CapabilityController(rest.RestController):
@staticmethod
@pecan.expose('json')
def get():
aggregation_methods = set(
archive_policy.ArchivePolicy.VALID_AGGREGATION_METHODS)
return dict(aggregation_methods=aggregation_methods,
dynamic_aggregation_methods=[
ext.name for ext in extension.ExtensionManager(
namespace='gnocchi.aggregates')
])
class StatusController(rest.RestController):
@staticmethod
@pecan.expose('json')
def get(details=True):
enforce("get status", {})
report = pecan.request.storage.measures_report(
strutils.bool_from_string(details))
report_dict = {"storage": {"summary": report['summary']}}
if 'details' in report:
report_dict["storage"]["measures_to_process"] = report['details']
return report_dict
class MetricsBatchController(object):
measures = MetricsMeasuresBatchController()
class ResourcesMetricsBatchController(object):
measures = ResourcesMetricsMeasuresBatchController()
class ResourcesBatchController(object):
metrics = ResourcesMetricsBatchController()
class BatchController(object):
metrics = MetricsBatchController()
resources = ResourcesBatchController()
class V1Controller(object):
def __init__(self):
self.sub_controllers = {
"search": SearchController(),
"archive_policy": ArchivePoliciesController(),
"archive_policy_rule": ArchivePolicyRulesController(),
"metric": MetricsController(),
"batch": BatchController(),
"resource": ResourcesByTypeController(),
"resource_type": ResourceTypesController(),
"aggregation": AggregationController(),
"capabilities": CapabilityController(),
"status": StatusController(),
}
for name, ctrl in self.sub_controllers.items():
setattr(self, name, ctrl)
@pecan.expose('json')
def index(self):
return {
"version": "1.0",
"links": [
{"rel": "self",
"href": pecan.request.application_url}
] + [
{"rel": name,
"href": pecan.request.application_url + "/" + name}
for name in sorted(self.sub_controllers)
]
}
class VersionsController(object):
@staticmethod
@pecan.expose('json')
def index():
return {
"versions": [
{
"status": "CURRENT",
"links": [
{
"rel": "self",
"href": pecan.request.application_url + "/v1/"
}
],
"id": "v1.0",
"updated": "2015-03-19"
}
]
}
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