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846 lines
29 KiB
Python
846 lines
29 KiB
Python
# Copyright 2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# 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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"""
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Contains all the units for the spec.
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This file loads swagger and JSON schema files and parses out the useful bits
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and returns them as Units for use in Batesian.
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For the actual conversion of data -> RST (including templates), see the sections
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file instead.
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"""
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from batesian.units import Units
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from collections import OrderedDict
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import logging
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import inspect
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import json
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import os
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import re
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import subprocess
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import sys
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import urllib
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import yaml
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HTTP_APIS = {
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"../api/application-service": "as",
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"../api/client-server": "cs",
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"../api/identity": "is",
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"../api/push-gateway": "push",
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}
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EVENT_EXAMPLES = "../event-schemas/examples"
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EVENT_SCHEMA = "../event-schemas/schema"
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CORE_EVENT_SCHEMA = "../event-schemas/schema/core-event-schema"
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CHANGELOG_DIR = "../changelogs"
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TARGETS = "../specification/targets.yaml"
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ROOM_EVENT = "core-event-schema/room_event.yaml"
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STATE_EVENT = "core-event-schema/state_event.yaml"
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logger = logging.getLogger(__name__)
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# a yaml Loader which loads mappings into OrderedDicts instead of regular
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# dicts, so that we preserve the ordering of properties from the api files.
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#
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# with thanks to http://stackoverflow.com/a/21912744/637864
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class OrderedLoader(yaml.Loader):
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pass
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def construct_mapping(loader, node):
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loader.flatten_mapping(node)
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pairs = loader.construct_pairs(node)
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return OrderedDict(pairs)
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OrderedLoader.add_constructor(
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yaml.resolver.BaseResolver.DEFAULT_MAPPING_TAG,
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construct_mapping)
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def resolve_references(path, schema):
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if isinstance(schema, dict):
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# do $ref first
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if '$ref' in schema:
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value = schema['$ref']
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path = os.path.join(os.path.dirname(path), value)
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with open(path) as f:
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ref = yaml.load(f, OrderedLoader)
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result = resolve_references(path, ref)
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del schema['$ref']
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else:
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result = OrderedDict()
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for key, value in schema.items():
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result[key] = resolve_references(path, value)
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return result
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elif isinstance(schema, list):
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return [resolve_references(path, value) for value in schema]
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else:
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return schema
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def inherit_parents(obj):
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"""
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Recurse through the 'allOf' declarations in the object
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"""
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logger.debug("inherit_parents %r" % obj)
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parents = obj.get("allOf", [])
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if not parents:
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return obj
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result = {}
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# settings defined in the child take priority over the parents, so we
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# iterate through the parents first, and then overwrite with the settings
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# from the child.
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for p in map(inherit_parents, parents) + [obj]:
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for key in ('title', 'type', 'required', 'description'):
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if p.get(key):
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result[key] = p[key]
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for key in ('properties', 'additionalProperties', 'patternProperties'):
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if p.get(key):
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result.setdefault(key, OrderedDict()).update(p[key])
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return result
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def get_json_schema_object_fields(obj, enforce_title=False):
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# Algorithm:
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# f.e. property => add field info (if field is object then recurse)
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if obj.get("type") != "object":
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raise Exception(
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"get_json_schema_object_fields: Object %s isn't an object." % obj
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)
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obj_title = obj.get("title")
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logger.debug("Processing object with title '%s'", obj_title)
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additionalProps = obj.get("additionalProperties")
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props = obj.get("properties")
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if additionalProps and not props:
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# not "really" an object, just a KV store
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logger.debug("%s is a pseudo-object", obj_title)
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key_type = additionalProps.get("x-pattern", "string")
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res = process_data_type(additionalProps)
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return {
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"type": "{%s: %s}" % (key_type, res["type"]),
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"tables": res["tables"],
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}
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if not props:
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props = obj.get("patternProperties")
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if props:
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# try to replace horrible regex key names with pretty x-pattern ones
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for key_name in props.keys():
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pretty_key = props[key_name].get("x-pattern")
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if pretty_key:
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props[pretty_key] = props[key_name]
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del props[key_name]
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# Sometimes you just want to specify that a thing is an object without
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# doing all the keys.
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if not props:
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return {
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"type": obj_title if obj_title else 'object',
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"tables": [],
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}
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if enforce_title and not obj_title:
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# Force a default titile of "NO_TITLE" to make it obvious in the
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# specification output which parts of the schema are missing a title
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obj_title = 'NO_TITLE'
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required_keys = set(obj.get("required", []))
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first_table_rows = []
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tables = []
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for key_name in props:
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try:
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logger.debug("Processing property %s.%s", obj_title, key_name)
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required = key_name in required_keys
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res = process_data_type(props[key_name], required)
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first_table_rows.append({
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"key": key_name,
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"type": res["type"],
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"required": required,
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"desc": res["desc"],
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})
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tables.extend(res["tables"])
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logger.debug("Done property %s" % key_name)
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except Exception, e:
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e2 = Exception("Error reading property %s.%s: %s" %
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(obj_title, key_name, str(e)))
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# throw the new exception with the old stack trace, so that
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# we don't lose information about where the error occurred.
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raise e2, None, sys.exc_info()[2]
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tables.insert(0, {
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"title": obj_title,
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"rows": first_table_rows,
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})
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return {
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"type": obj_title,
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"tables": tables,
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}
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# process a data type definition. returns a dictionary with the keys:
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# type: stringified type name
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# desc: description
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# enum_desc: description of permissible enum fields
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# is_object: true if the data type is an object
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# tables: list of additional table definitions
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def process_data_type(prop, required=False, enforce_title=True):
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prop = inherit_parents(prop)
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prop_type = prop['type']
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tables = []
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enum_desc = None
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is_object = False
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if prop_type == "object":
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res = get_json_schema_object_fields(
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prop,
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enforce_title=enforce_title,
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)
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prop_type = res["type"]
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tables = res["tables"]
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is_object = True
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elif prop_type == "array":
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nested = process_data_type(prop["items"])
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prop_type = "[%s]" % nested["type"]
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tables = nested["tables"]
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enum_desc = nested["enum_desc"]
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if prop.get("enum"):
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if len(prop["enum"]) > 1:
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prop_type = "enum"
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enum_desc = (
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"One of: %s" % json.dumps(prop["enum"])
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)
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else:
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enum_desc = (
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"Must be '%s'." % prop["enum"][0]
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)
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if isinstance(prop_type, list):
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prop_type = " or ".join(prop_type)
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rq = "**Required.**" if required else None
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desc = " ".join(x for x in [rq, prop.get("description"), enum_desc] if x)
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return {
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"type": prop_type,
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"desc": desc,
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"enum_desc": enum_desc,
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"is_object": is_object,
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"tables": tables,
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}
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def deduplicate_tables(tables):
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# the result may contain duplicates, if objects are referred to more than
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# once. Filter them out.
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#
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# Go through the tables backwards so that we end up with a breadth-first
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# rather than depth-first ordering.
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titles = set()
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filtered = []
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for table in reversed(tables):
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if table.get("no-table"):
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continue
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if table.get("title") in titles:
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continue
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titles.add(table.get("title"))
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filtered.append(table)
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filtered.reverse()
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return filtered
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def get_tables_for_schema(schema):
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pv = process_data_type(schema, enforce_title=False)
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return deduplicate_tables(pv["tables"])
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def get_tables_for_response(schema):
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pv = process_data_type(schema, enforce_title=False)
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tables = deduplicate_tables(pv["tables"])
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# make up the first table, with just the 'body' row in, unless the response
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# is an object, in which case there's little point in having one.
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if not pv["is_object"]:
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tables = [{
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"title": None,
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"rows": [{
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"key": "<body>",
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"type": pv["type"],
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"desc": pv["desc"],
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}]
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}] + tables
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logger.debug("response: %r" % tables)
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return tables
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def get_example_for_schema(schema):
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"""Returns a python object representing a suitable example for this object"""
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schema = inherit_parents(schema)
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if 'example' in schema:
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example = schema['example']
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return example
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proptype = schema['type']
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if proptype == 'object':
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if 'properties' not in schema:
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raise Exception('"object" property has neither properties nor example')
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res = OrderedDict()
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for prop_name, prop in schema['properties'].iteritems():
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logger.debug("Parsing property %r" % prop_name)
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prop_example = get_example_for_schema(prop)
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res[prop_name] = prop_example
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return res
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if proptype == 'array':
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if 'items' not in schema:
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raise Exception('"array" property has neither items nor example')
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return [get_example_for_schema(schema['items'])]
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if proptype == 'integer':
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return 0
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if proptype == 'string':
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return proptype
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raise Exception("Don't know to make an example %s" % proptype)
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def get_example_for_param(param):
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"""Returns a stringified example for a parameter"""
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if 'x-example' in param:
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return param['x-example']
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schema = param.get('schema')
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if not schema:
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return None
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# allow examples for the top-level object to be in formatted json
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exampleobj = None
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if 'example' in schema:
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exampleobj = schema['example']
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if isinstance(exampleobj, basestring):
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return exampleobj
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if exampleobj is None:
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exampleobj = get_example_for_schema(schema)
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return json.dumps(exampleobj, indent=2)
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def get_example_for_response(response):
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"""Returns a stringified example for a response"""
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exampleobj = None
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if 'examples' in response:
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exampleobj = response["examples"].get("application/json")
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# the openapi spec suggests that examples in the 'examples' section should
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# be formatted as raw objects rather than json-formatted strings, but we
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# have lots of the latter in our spec, which work with the swagger UI,
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# so grandfather them in.
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#
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# FIXME: swagger-ui no longer supports this. We should fix the inputs
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# and remove the grandfathering.
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if isinstance(exampleobj, basestring):
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return exampleobj
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if exampleobj is None:
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schema = response.get('schema')
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if schema:
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if schema['type'] == 'file':
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# no example for 'file' responses
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return None
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exampleobj = get_example_for_schema(schema)
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if exampleobj is None:
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return None
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return json.dumps(exampleobj, indent=2)
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class MatrixUnits(Units):
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def _load_swagger_meta(self, api, group_name):
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endpoints = []
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for path in api["paths"]:
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for method in api["paths"][path]:
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single_api = api["paths"][path][method]
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full_path = api.get("basePath", "").rstrip("/") + path
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endpoint = {
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"title": single_api.get("summary", ""),
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"deprecated": single_api.get("deprecated", False),
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"desc": single_api.get("description", single_api.get("summary", "")),
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"method": method.upper(),
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"path": full_path.strip(),
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"requires_auth": "security" in single_api,
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"rate_limited": 429 in single_api.get("responses", {}),
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"req_param_by_loc": {},
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"req_body_tables": [],
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"res_headers": [],
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"res_tables": [],
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"responses": [],
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"example": {
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"req": "",
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}
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}
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logger.info(" ------- Endpoint: %s %s ------- " % (method, path))
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path_template = api.get("basePath", "").rstrip("/") + path
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example_query_params = []
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example_body = ""
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for param in single_api.get("parameters", []):
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# even body params should have names, otherwise the active docs don't work.
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param_name = param["name"]
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try:
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param_loc = param["in"]
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if param_loc == "body":
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self._handle_body_param(param, endpoint)
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example_body = get_example_for_param(param)
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continue
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# description
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desc = param.get("description", "")
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if param.get("required"):
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desc = "**Required.** " + desc
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# assign value expected for this param
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val_type = param.get("type") # integer/string
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if param.get("enum"):
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val_type = "enum"
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desc += (
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" One of: %s" % json.dumps(param.get("enum"))
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)
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endpoint["req_param_by_loc"].setdefault(param_loc, []).append({
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"key": param_name,
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"type": val_type,
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"desc": desc
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})
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example = get_example_for_param(param)
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if example is None:
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continue
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if param_loc == "path":
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path_template = path_template.replace(
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"{%s}" % param_name, urllib.quote(example)
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)
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elif param_loc == "query":
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if type(example) == list:
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for value in example:
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example_query_params.append((param_name, value))
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else:
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example_query_params.append((param_name, example))
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except Exception, e:
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raise Exception("Error handling parameter %s" % param_name, e)
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# endfor[param]
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good_response = None
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for code in sorted(single_api.get("responses", {}).keys()):
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res = single_api["responses"][code]
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if not good_response and code == 200:
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good_response = res
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description = res.get("description", "")
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example = get_example_for_response(res)
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endpoint["responses"].append({
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"code": code,
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"description": description,
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"example": example,
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})
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# add response params if this API has any.
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if good_response:
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if "schema" in good_response:
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endpoint["res_tables"] = get_tables_for_response(
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good_response["schema"]
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)
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if "headers" in good_response:
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headers = []
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for (header_name, header) in good_response["headers"].iteritems():
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headers.append({
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"key": header_name,
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"type": header["type"],
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"desc": header["description"],
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})
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endpoint["res_headers"] = headers
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query_string = "" if len(example_query_params) == 0 else "?"+urllib.urlencode(example_query_params)
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if example_body:
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endpoint["example"]["req"] = "%s %s%s HTTP/1.1\nContent-Type: application/json\n\n%s" % (
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method.upper(), path_template, query_string, example_body
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)
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else:
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endpoint["example"]["req"] = "%s %s%s HTTP/1.1\n\n" % (
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method.upper(), path_template, query_string
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)
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endpoints.append(endpoint)
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return {
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"base": api.get("basePath").rstrip("/"),
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"group": group_name,
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"endpoints": endpoints,
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}
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def _handle_body_param(self, param, endpoint_data):
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"""Update endpoint_data object with the details of the body param
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:param string filepath path to the yaml
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:param dict param the parameter data from the yaml
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:param dict endpoint_data dictionary of endpoint data to be updated
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"""
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try:
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schema = inherit_parents(param["schema"])
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if schema["type"] != "object":
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logger.warn(
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"Unsupported body type %s for %s %s", schema["type"],
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endpoint_data["method"], endpoint_data["path"]
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)
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return
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req_body_tables = get_tables_for_schema(schema)
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if req_body_tables == []:
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# no fields defined for the body.
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return
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# put the top-level parameters into 'req_param_by_loc', and the others
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# into 'req_body_tables'
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body_params = endpoint_data['req_param_by_loc'].setdefault("JSON body",[])
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body_params.extend(req_body_tables[0]["rows"])
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body_tables = req_body_tables[1:]
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endpoint_data['req_body_tables'].extend(body_tables)
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except Exception, e:
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e2 = Exception(
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"Error decoding body of API endpoint %s %s: %s" %
|
|
(endpoint_data["method"], endpoint_data["path"], e)
|
|
)
|
|
raise e2, None, sys.exc_info()[2]
|
|
|
|
|
|
def load_swagger_apis(self):
|
|
apis = {}
|
|
for path, suffix in HTTP_APIS.items():
|
|
for filename in os.listdir(path):
|
|
if not filename.endswith(".yaml"):
|
|
continue
|
|
logger.info("Reading swagger API: %s" % filename)
|
|
filepath = os.path.join(path, filename)
|
|
with open(filepath, "r") as f:
|
|
# strip .yaml
|
|
group_name = filename[:-5].replace("-", "_")
|
|
group_name = "%s_%s" % (group_name, suffix)
|
|
api = yaml.load(f.read(), OrderedLoader)
|
|
api = resolve_references(filepath, api)
|
|
api["__meta"] = self._load_swagger_meta(
|
|
api, group_name
|
|
)
|
|
apis[group_name] = api
|
|
return apis
|
|
|
|
def load_common_event_fields(self):
|
|
path = CORE_EVENT_SCHEMA
|
|
event_types = {}
|
|
|
|
for (root, dirs, files) in os.walk(path):
|
|
for filename in files:
|
|
if not filename.endswith(".yaml"):
|
|
continue
|
|
|
|
event_type = filename[:-5] # strip the ".yaml"
|
|
filepath = os.path.join(root, filename)
|
|
with open(filepath) as f:
|
|
try:
|
|
event_info = yaml.load(f, OrderedLoader)
|
|
except Exception as e:
|
|
raise ValueError(
|
|
"Error reading file %r" % (filepath,), e
|
|
)
|
|
|
|
if "event" not in event_type:
|
|
continue # filter ImageInfo and co
|
|
|
|
table = {
|
|
"title": event_info["title"],
|
|
"desc": event_info["description"],
|
|
"rows": []
|
|
}
|
|
|
|
for prop in sorted(event_info["properties"]):
|
|
row = {
|
|
"key": prop,
|
|
"type": event_info["properties"][prop]["type"],
|
|
"desc": event_info["properties"][prop].get("description","")
|
|
}
|
|
table["rows"].append(row)
|
|
|
|
event_types[event_type] = table
|
|
return event_types
|
|
|
|
def load_apis(self, substitutions):
|
|
cs_ver = substitutions.get("%CLIENT_RELEASE_LABEL%", "unstable")
|
|
fed_ver = substitutions.get("%SERVER_RELEASE_LABEL%", "unstable")
|
|
return {
|
|
"rows": [{
|
|
"key": "`Client-Server API <client_server/"+cs_ver+".html>`_",
|
|
"type": cs_ver,
|
|
"desc": "Interaction between clients and servers",
|
|
}, {
|
|
"key": "`Server-Server API <server_server/"+fed_ver+".html>`_",
|
|
"type": fed_ver,
|
|
"desc": "Federation between servers",
|
|
}, {
|
|
"key": "`Application Service API <application_service/unstable.html>`_",
|
|
"type": "unstable",
|
|
"desc": "Privileged server plugins",
|
|
}, {
|
|
"key": "`Identity Service API <identity_service/unstable.html>`_",
|
|
"type": "unstable",
|
|
"desc": "Mapping of third party IDs to Matrix IDs",
|
|
}, {
|
|
"key": "`Push Gateway API <push_gateway/unstable.html>`_",
|
|
"type": "unstable",
|
|
"desc": "Push notifications for Matrix events",
|
|
}]
|
|
}
|
|
|
|
def load_event_examples(self):
|
|
path = EVENT_EXAMPLES
|
|
examples = {}
|
|
for filename in os.listdir(path):
|
|
if not filename.startswith("m."):
|
|
continue
|
|
with open(os.path.join(path, filename), "r") as f:
|
|
event_name = filename.split("#")[0]
|
|
example = json.loads(f.read())
|
|
|
|
examples[filename] = examples.get(filename, [])
|
|
examples[filename].append(example)
|
|
if filename != event_name:
|
|
examples[event_name] = examples.get(event_name, [])
|
|
examples[event_name].append(example)
|
|
return examples
|
|
|
|
def load_event_schemas(self):
|
|
path = EVENT_SCHEMA
|
|
schemata = {}
|
|
|
|
for filename in os.listdir(path):
|
|
if not filename.startswith("m."):
|
|
continue
|
|
filepath = os.path.join(path, filename)
|
|
try:
|
|
schemata[filename] = self.read_event_schema(filepath)
|
|
except Exception, e:
|
|
e2 = Exception("Error reading event schema "+filepath+": "+
|
|
str(e))
|
|
# throw the new exception with the old stack trace, so that
|
|
# we don't lose information about where the error occurred.
|
|
raise e2, None, sys.exc_info()[2]
|
|
|
|
return schemata
|
|
|
|
def read_event_schema(self, filepath):
|
|
logger.info("Reading %s" % filepath)
|
|
|
|
with open(filepath, "r") as f:
|
|
json_schema = yaml.load(f, OrderedLoader)
|
|
|
|
schema = {
|
|
"typeof": "",
|
|
"typeof_info": "",
|
|
"type": None,
|
|
"title": None,
|
|
"desc": None,
|
|
"msgtype": None,
|
|
"content_fields": [
|
|
# {
|
|
# title: "<title> key"
|
|
# rows: [
|
|
# { key: <key_name>, type: <string>,
|
|
# desc: <desc>, required: <bool> }
|
|
# ]
|
|
# }
|
|
]
|
|
}
|
|
|
|
# add typeof
|
|
base_defs = {
|
|
ROOM_EVENT: "Message Event",
|
|
STATE_EVENT: "State Event"
|
|
}
|
|
if type(json_schema.get("allOf")) == list:
|
|
firstRef = json_schema["allOf"][0]["$ref"]
|
|
if firstRef in base_defs:
|
|
schema["typeof"] = base_defs[firstRef]
|
|
|
|
json_schema = resolve_references(filepath, json_schema)
|
|
|
|
# add type
|
|
schema["type"] = Units.prop(
|
|
json_schema, "properties/type/enum"
|
|
)[0]
|
|
|
|
# add summary and desc
|
|
schema["title"] = json_schema.get("title")
|
|
schema["desc"] = json_schema.get("description", "")
|
|
|
|
# walk the object for field info
|
|
schema["content_fields"] = get_tables_for_schema(
|
|
Units.prop(json_schema, "properties/content")
|
|
)
|
|
|
|
# This is horrible because we're special casing a key on m.room.member.
|
|
# We need to do this because we want to document a non-content object.
|
|
if schema["type"] == "m.room.member":
|
|
invite_room_state = get_tables_for_schema(
|
|
json_schema["properties"]["invite_room_state"]["items"],
|
|
)
|
|
schema["content_fields"].extend(invite_room_state)
|
|
|
|
|
|
# grab msgtype if it is the right kind of event
|
|
msgtype = Units.prop(
|
|
json_schema, "properties/content/properties/msgtype/enum"
|
|
)
|
|
if msgtype:
|
|
schema["msgtype"] = msgtype[0] # enum prop
|
|
|
|
# link to msgtypes for m.room.message
|
|
if schema["type"] == "m.room.message" and not msgtype:
|
|
schema["desc"] += (
|
|
" For more information on ``msgtypes``, see "+
|
|
"`m.room.message msgtypes`_."
|
|
)
|
|
|
|
# Assign state key info if it has some
|
|
if schema["typeof"] == "State Event":
|
|
skey_desc = Units.prop(
|
|
json_schema, "properties/state_key/description"
|
|
)
|
|
if not skey_desc:
|
|
raise Exception("Missing description for state_key")
|
|
schema["typeof_info"] = "``state_key``: %s" % skey_desc
|
|
|
|
return schema
|
|
|
|
def load_changelogs(self):
|
|
changelogs = {}
|
|
|
|
for f in os.listdir(CHANGELOG_DIR):
|
|
if not f.endswith(".rst"):
|
|
continue
|
|
path = os.path.join(CHANGELOG_DIR, f)
|
|
name = f[:-4]
|
|
|
|
title_part = None
|
|
changelog_lines = []
|
|
with open(path, "r") as f:
|
|
lines = f.readlines()
|
|
prev_line = None
|
|
for line in lines:
|
|
if prev_line is None:
|
|
prev_line = line
|
|
continue
|
|
if not title_part:
|
|
# find the title underline (at least 3 =)
|
|
if re.match("^[=]{3,}$", line.strip()):
|
|
title_part = prev_line
|
|
continue
|
|
prev_line = line
|
|
else: # have title, get body (stop on next title or EOF)
|
|
if re.match("^[=]{3,}$", line.strip()):
|
|
# we added the title in the previous iteration, pop it
|
|
# then bail out.
|
|
changelog_lines.pop()
|
|
break
|
|
changelog_lines.append(" " + line)
|
|
changelogs[name] = "".join(changelog_lines)
|
|
|
|
return changelogs
|
|
|
|
|
|
def load_spec_targets(self):
|
|
with open(TARGETS, "r") as f:
|
|
return yaml.load(f.read())
|
|
|
|
|
|
def load_git_version(self):
|
|
null = open(os.devnull, 'w')
|
|
cwd = os.path.dirname(os.path.abspath(__file__))
|
|
try:
|
|
git_branch = subprocess.check_output(
|
|
['git', 'rev-parse', '--abbrev-ref', 'HEAD'],
|
|
stderr=null,
|
|
cwd=cwd,
|
|
).strip()
|
|
except subprocess.CalledProcessError:
|
|
git_branch = ""
|
|
try:
|
|
git_tag = subprocess.check_output(
|
|
['git', 'describe', '--exact-match'],
|
|
stderr=null,
|
|
cwd=cwd,
|
|
).strip()
|
|
git_tag = "tag=" + git_tag
|
|
except subprocess.CalledProcessError:
|
|
git_tag = ""
|
|
try:
|
|
git_commit = subprocess.check_output(
|
|
['git', 'rev-parse', '--short', 'HEAD'],
|
|
stderr=null,
|
|
cwd=cwd,
|
|
).strip()
|
|
except subprocess.CalledProcessError:
|
|
git_commit = ""
|
|
try:
|
|
dirty_string = "-this_is_a_dirty_checkout"
|
|
is_dirty = subprocess.check_output(
|
|
['git', 'describe', '--dirty=' + dirty_string, "--all"],
|
|
stderr=null,
|
|
cwd=cwd,
|
|
).strip().endswith(dirty_string)
|
|
git_dirty = "dirty" if is_dirty else ""
|
|
except subprocess.CalledProcessError:
|
|
git_dirty = ""
|
|
|
|
git_version = "Unknown"
|
|
if git_branch or git_tag or git_commit or git_dirty:
|
|
git_version = ",".join(
|
|
s for s in
|
|
(git_branch, git_tag, git_commit, git_dirty,)
|
|
if s
|
|
).encode("ascii")
|
|
return {
|
|
"string": git_version,
|
|
"revision": git_commit
|
|
}
|