Feature/config service (#332)

Configuration service provides an API to change configuration. Complete configuration is pushed down a config queue so that users have a complete copy of config object.

test-api/test-config-api

@@ -0,0 +1,248 @@
+#!/usr/bin/env python3
+
+import requests
+import json
+import sys
+
+url = "http://localhost:8088/api/v1/"
+
+############################################################################
+
+input = {
+    "operation": "config"
+}
+
+resp = requests.post(
+    f"{url}config",
+    json=input,
+)
+
+if resp.status_code != 200:
+    raise RuntimeError(f"Status code: {resp.status_code}")
+
+resp = resp.json()
+
+if "error" in resp:
+    print(f"Error: {resp['error']}")
+    sys.exit(1)
+
+print(json.dumps(resp, indent=4))
+
+############################################################################
+
+input = {
+    "operation": "put",
+    "values": [
+        {
+            "type": "test",
+            "key": "key1",
+            "value": "value1"
+        },
+        {
+            "type": "test",
+            "key": "key2",
+            "value": "value2"
+        }
+    ]
+}
+
+resp = requests.post(
+    f"{url}config",
+    json=input,
+)
+
+if resp.status_code != 200:
+    raise RuntimeError(f"Status code: {resp.status_code}")
+
+resp = resp.json()
+
+if "error" in resp:
+    print(f"Error: {resp['error']}")
+    sys.exit(1)
+
+print(json.dumps(resp, indent=4))
+
+############################################################################
+
+input = {
+    "operation": "put",
+    "values": [
+        {
+            "type": "test",
+            "key": "key3",
+            "value": "testing 1 2 3"
+        }
+    ]
+}
+
+resp = requests.post(
+    f"{url}config",
+    json=input,
+)
+
+if resp.status_code != 200:
+    raise RuntimeError(f"Status code: {resp.status_code}")
+
+resp = resp.json()
+
+if "error" in resp:
+    print(f"Error: {resp['error']}")
+    sys.exit(1)
+
+print(json.dumps(resp, indent=4))
+
+############################################################################
+
+input = {
+    "operation": "get",
+    "keys": [
+        {
+            "type": "test",
+            "key": "key2"
+        },
+        {
+            "type": "test",
+            "key": "key3"
+        }
+    ]
+}
+
+resp = requests.post(
+    f"{url}config",
+    json=input,
+)
+
+if resp.status_code != 200:
+    raise RuntimeError(f"Status code: {resp.status_code}")
+
+resp = resp.json()
+
+if "error" in resp:
+    print(f"Error: {resp['error']}")
+    sys.exit(1)
+
+print(json.dumps(resp, indent=4))
+
+############################################################################
+
+input = {
+    "operation": "config"
+}
+
+resp = requests.post(
+    f"{url}config",
+    json=input,
+)
+
+if resp.status_code != 200:
+    raise RuntimeError(f"Status code: {resp.status_code}")
+
+resp = resp.json()
+
+if "error" in resp:
+    print(f"Error: {resp['error']}")
+    sys.exit(1)
+
+print(json.dumps(resp, indent=4))
+
+############################################################################
+
+input = {
+    "operation": "list",
+    "type": "test"
+}
+
+resp = requests.post(
+    f"{url}config",
+    json=input,
+)
+
+if resp.status_code != 200:
+    raise RuntimeError(f"Status code: {resp.status_code}")
+
+resp = resp.json()
+
+if "error" in resp:
+    print(f"Error: {resp['error']}")
+    sys.exit(1)
+
+print(json.dumps(resp, indent=4))
+
+############################################################################
+
+input = {
+    "operation": "getvalues",
+    "type": "test"
+}
+
+resp = requests.post(
+    f"{url}config",
+    json=input,
+)
+
+if resp.status_code != 200:
+    raise RuntimeError(f"Status code: {resp.status_code}")
+
+resp = resp.json()
+
+if "error" in resp:
+    print(f"Error: {resp['error']}")
+    sys.exit(1)
+
+print(json.dumps(resp, indent=4))
+
+############################################################################
+
+input = {
+    "operation": "delete",
+    "keys": [
+        {
+            "type": "test",
+            "key": "key1"
+        },
+        {
+            "type": "test",
+            "key": "key3"
+        }
+    ]
+}
+
+resp = requests.post(
+    f"{url}config",
+    json=input,
+)
+
+if resp.status_code != 200:
+    raise RuntimeError(f"Status code: {resp.status_code}")
+
+resp = resp.json()
+
+if "error" in resp:
+    print(f"Error: {resp['error']}")
+    sys.exit(1)
+
+print(json.dumps(resp, indent=4))
+
+############################################################################
+
+input = {
+    "operation": "config"
+}
+
+resp = requests.post(
+    f"{url}config",
+    json=input,
+)
+
+if resp.status_code != 200:
+    raise RuntimeError(f"Status code: {resp.status_code}")
+
+resp = resp.json()
+
+if "error" in resp:
+    print(f"Error: {resp['error']}")
+    sys.exit(1)
+
+print(json.dumps(resp, indent=4))
+
+############################################################################

tests/test-get-config

@@ -0,0 +1,11 @@
+#!/usr/bin/env python3
+
+import pulsar
+from trustgraph.clients.config_client import ConfigClient
+
+cli = ConfigClient(pulsar_host="pulsar://localhost:6650")
+
+resp = cli.request_config()
+
+print(resp)
+

trustgraph-base/trustgraph/api/api.py

@@ -382,3 +382,33 @@ class Api:
         if resp.status_code != 200:
             raise ProtocolException(f"Status code {resp.status_code}")
 
+    def get_config(self):
+
+        # The input consists of system and prompt strings
+        input = {
+            "operation": "config"
+        }
+
+        url = f"{self.url}config"
+
+        # Invoke the API, input is passed as JSON
+        resp = requests.post(url, json=input)
+
+        # Should be a 200 status code
+        if resp.status_code != 200:
+            raise ProtocolException(f"Status code {resp.status_code}")
+
+        try:
+            # Parse the response as JSON
+            object = resp.json()
+        except:
+            raise ProtocolException(f"Expected JSON response")
+
+        self.check_error(resp)
+
+        try:
+            return object["config"], object["version"]
+        except:
+            raise ProtocolException(f"Response not formatted correctly")
+
+        

trustgraph-base/trustgraph/clients/base.py

@@ -28,6 +28,7 @@ class BaseClient:
             output_schema=None,
             pulsar_host="pulsar://pulsar:6650",
             pulsar_api_key=None,
+            listener=None,
     ):
 
         if input_queue == None: raise RuntimeError("Need input_queue")
@@ -41,14 +42,16 @@ class BaseClient:
         if pulsar_api_key:
             auth = pulsar.AuthenticationToken(pulsar_api_key)
             self.client = pulsar.Client(
-            pulsar_host,
+                pulsar_host,
-            logger=pulsar.ConsoleLogger(log_level),
+                logger=pulsar.ConsoleLogger(log_level),
-            authentication=auth,
+                authentication=auth,
+                listener=listener,
             )
         else:
             self.client = pulsar.Client(
-            pulsar_host,
+                pulsar_host,
-            logger=pulsar.ConsoleLogger(log_level)
+                logger=pulsar.ConsoleLogger(log_level),
+                listener_name=listener,
             )
 
         self.producer = self.client.create_producer(

trustgraph-base/trustgraph/clients/config_client.py

@@ -0,0 +1,161 @@
+
+import _pulsar
+import json
+import dataclasses
+
+from .. schema import ConfigRequest, ConfigResponse, ConfigKey, ConfigValue
+from .. schema import config_request_queue
+from .. schema import config_response_queue
+from . base import BaseClient
+
+# Ugly
+ERROR=_pulsar.LoggerLevel.Error
+WARN=_pulsar.LoggerLevel.Warn
+INFO=_pulsar.LoggerLevel.Info
+DEBUG=_pulsar.LoggerLevel.Debug
+
+@dataclasses.dataclass
+class Definition:
+    name: str
+    definition: str
+
+@dataclasses.dataclass
+class Relationship:
+    s: str
+    p: str
+    o: str
+    o_entity: str
+
+@dataclasses.dataclass
+class Topic:
+    name: str
+    definition: str
+
+class ConfigClient(BaseClient):
+
+    def __init__(
+            self, log_level=ERROR,
+            subscriber=None,
+            input_queue=None,
+            output_queue=None,
+            pulsar_host="pulsar://pulsar:6650",
+            listener=None,
+            pulsar_api_key=None,
+    ):
+
+        if input_queue == None:
+            input_queue = config_request_queue
+
+        if output_queue == None:
+            output_queue = config_response_queue
+
+        super(ConfigClient, self).__init__(
+            log_level=log_level,
+            subscriber=subscriber,
+            input_queue=input_queue,
+            output_queue=output_queue,
+            pulsar_host=pulsar_host,
+            pulsar_api_key=pulsar_api_key,
+            input_schema=ConfigRequest,
+            output_schema=ConfigResponse,
+            listener=listener,
+        )
+
+    def request_get(self, keys, timeout=300):
+
+        resp = self.call(
+            id=id,
+            operation="get",
+            keys=[
+                ConfigKey(
+                    type = k["type"],
+                    key = k["key"]
+                )
+                for k in keys
+            ],
+            timeout=timeout
+        )
+
+        return [
+            {
+                "type": v.type,
+                "key": v.key,
+                "value": v.value
+            }
+            for v in resp.values
+        ]
+
+    def request_list(self, type, timeout=300):
+
+        resp = self.call(
+            id=id,
+            operation="list",
+            type=type,
+            timeout=timeout
+        )
+
+        return resp.directory
+
+    def request_getvalues(self, type, timeout=300):
+
+        resp = self.call(
+            id=id,
+            operation="getvalues",
+            type=type,
+            timeout=timeout
+        )
+
+        return [
+            {
+                "type": v.type,
+                "key": v.key,
+                "value": v.value
+            }
+            for v in resp.values
+        ]
+
+    def request_delete(self, keys, timeout=300):
+
+        resp = self.call(
+            id=id,
+            operation="delete",
+            keys=[
+                ConfigKey(
+                    type = k["type"],
+                    key = k["key"]
+                )
+                for k in keys
+            ],
+            timeout=timeout
+        )
+
+        return None
+
+    def request_put(self, value, timeout=300):
+
+        resp = self.call(
+            id=id,
+            operation="put",
+            values=[
+                ConfigValue(
+                    type = k["type"],
+                    key = k["key"],
+                    value = k["value"]
+                )
+                for k in keys
+            ],
+            timeout=timeout
+        )
+
+        return None
+
+    def request_config(self, timeout=300):
+
+        resp = self.call(
+            id=id,
+            operation="config",
+            timeout=timeout
+        )
+
+        return resp.config
+

trustgraph-base/trustgraph/schema/__init__.py

@@ -11,5 +11,6 @@ from . metadata import *
 from . agent import *
 from . lookup import *
 from . library import *
+from . config import *
 
 

trustgraph-base/trustgraph/schema/config.py

@@ -0,0 +1,71 @@
+
+from pulsar.schema import Record, Bytes, String, Boolean, Array, Map, Integer
+
+from . topic import topic
+from . types import Error, RowSchema
+
+############################################################################
+
+# Config service:
+#   get(keys) -> (version, values)
+#   list(type) -> (version, values)
+#   getvalues(type) -> (version, values)
+#   put(values) -> ()
+#   delete(keys) -> ()
+#   config() -> (version, config)
+class ConfigKey(Record):
+    type = String()
+    key = String()
+
+class ConfigValue(Record):
+    type = String()
+    key = String()
+    value = String()
+
+# Prompt services, abstract the prompt generation
+class ConfigRequest(Record):
+
+    operation = String() # get, list, getvalues, delete, put, config
+
+    # get, delete
+    keys = Array(ConfigKey())
+
+    # list, getvalues
+    type = String()
+
+    # put
+    values = Array(ConfigValue())
+
+class ConfigResponse(Record):
+
+    # get, list, getvalues, config
+    version = Integer()
+
+    # get, getvalues
+    values = Array(ConfigValue())
+
+    # list
+    directory = Array(String())
+
+    # config
+    config = Map(Map(String()))
+
+    # Everything
+    error = Error()
+
+class ConfigPush(Record):
+    version = Integer()
+    config = Map(Map(String()))
+
+config_request_queue = topic(
+    'config', kind='non-persistent', namespace='request'
+)
+config_response_queue = topic(
+    'config', kind='non-persistent', namespace='response'
+)
+config_push_queue = topic(
+    'config', kind='persistent', namespace='config'
+)
+
+############################################################################
+

trustgraph-cli/scripts/tg-init-pulsar

@@ -79,6 +79,13 @@ def init(url, tenant="tg"):
         }
     })
 
+    ensure_namespace(url, tenant, "config", {
+        "retention_policies": {
+            "retentionSizeInMB": 50,
+            "retentionTimeInMinutes": -1,
+        }
+    })
+
 def main():
 
     parser = argparse.ArgumentParser(

trustgraph-cli/scripts/tg-show-config

@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+
+"""
+Dumps out the current configuration
+"""
+
+import argparse
+import os
+from trustgraph.api import Api
+import json
+
+default_url = os.getenv("TRUSTGRAPH_URL", 'http://localhost:8088/')
+
+def show_config(url):
+
+    api = Api(url)
+
+    config, version = api.get_config()
+
+    print("Version:", version)
+    print(json.dumps(config, indent=4))
+
+def main():
+
+    parser = argparse.ArgumentParser(
+        prog='tg-show-config',
+        description=__doc__,
+    )
+
+    parser.add_argument(
+        '-u', '--api-url',
+        default=default_url,
+        help=f'API URL (default: {default_url})',
+    )
+
+    args = parser.parse_args()
+
+    try:
+
+        show_config(
+            url=args.api_url,
+        )
+
+    except Exception as e:
+
+        print("Exception:", e, flush=True)
+
+main()
+

trustgraph-cli/setup.py

@@ -62,5 +62,6 @@ setuptools.setup(
         "scripts/tg-processor-state",
         "scripts/tg-save-kg-core",
         "scripts/tg-save-doc-embeds",
+        "scripts/tg-show-config",
     ]
 )

trustgraph-flow/scripts/config-svc

@@ -0,0 +1,6 @@
+#!/usr/bin/env python3
+
+from trustgraph.config.service import run
+
+run()
+

trustgraph-flow/setup.py

@@ -73,6 +73,7 @@ setuptools.setup(
         "scripts/api-gateway",
         "scripts/chunker-recursive",
         "scripts/chunker-token",
+        "scripts/config-svc",
         "scripts/de-query-milvus",
         "scripts/de-query-pinecone",
         "scripts/de-query-qdrant",

trustgraph-flow/trustgraph/config/service/__init__.py

@@ -0,0 +1,3 @@
+
+from . service import *
+

trustgraph-flow/trustgraph/config/service/__main__.py

@@ -0,0 +1,7 @@
+#!/usr/bin/env python3
+
+from . service import run
+
+if __name__ == '__main__':
+    run()
+

trustgraph-flow/trustgraph/config/service/service.py

@@ -0,0 +1,312 @@
+
+"""
+Config service.  Fetchs an extract from the Wikipedia page
+using the API.
+"""
+
+from pulsar.schema import JsonSchema
+
+from trustgraph.schema import ConfigRequest, ConfigResponse, ConfigPush
+from trustgraph.schema import ConfigValue, Error
+from trustgraph.schema import config_request_queue, config_response_queue
+from trustgraph.schema import config_push_queue
+from trustgraph.log_level import LogLevel
+from trustgraph.base import ConsumerProducer
+
+module = ".".join(__name__.split(".")[1:-1])
+
+default_input_queue = config_request_queue
+default_output_queue = config_response_queue
+default_push_queue = config_push_queue
+default_subscriber = module
+
+# This behaves just like a dict, should be easier to add persistent storage
+# later
+
+class ConfigurationItems(dict):
+    pass
+
+class Configuration(dict):
+
+    def __getitem__(self, key):
+        if key not in self:
+            self[key] = ConfigurationItems()
+        return dict.__getitem__(self, key)
+        
+class Processor(ConsumerProducer):
+
+    def __init__(self, **params):
+
+        input_queue = params.get("input_queue", default_input_queue)
+        output_queue = params.get("output_queue", default_output_queue)
+        push_queue = params.get("push_queue", default_push_queue)
+        subscriber = params.get("subscriber", default_subscriber)
+
+        super(Processor, self).__init__(
+            **params | {
+                "input_queue": input_queue,
+                "output_queue": output_queue,
+                "push_queue": output_queue,
+                "subscriber": subscriber,
+                "input_schema": ConfigRequest,
+                "output_schema": ConfigResponse,
+                "push_schema": ConfigPush,
+            }
+        )
+
+        self.push_prod = self.client.create_producer(
+            topic=push_queue,
+            schema=JsonSchema(ConfigPush),
+        )
+
+        # FIXME: The state is held internally. This only works if there's
+        # one config service.  Should be more than one, and use a
+        # back-end state store.
+        self.config = Configuration()
+
+        # Version counter
+        self.version = 0
+
+    async def start(self):
+        await self.push()
+        
+    async def handle_get(self, v, id):
+
+        for k in v.keys:
+            if k.type not in self.config or k.key not in self.config[k.type]:
+                return ConfigResponse(
+                    version = None,
+                    values = None,
+                    directory = None,
+                    config = None,
+                    error = Error(
+                        code = "key-error",
+                        message = f"Key error"
+                    )
+                )
+
+        values = [
+            ConfigValue(
+                type = k.type,
+                key = k.key,
+                value = self.config[k.type][k.key]
+            )
+            for k in v.keys
+        ]
+
+        return ConfigResponse(
+            version = self.version,
+            values = values,
+            directory = None,
+            config = None,
+            error = None,
+        )
+
+    async def handle_list(self, v, id):
+
+        if v.type not in self.config:
+
+            return ConfigResponse(
+                version = None,
+                values = None,
+                directory = None,
+                config = None,
+                error = Error(
+                    code="key-error",
+                    message="No such type",
+                ),
+            )
+
+        return ConfigResponse(
+            version = self.version,
+            values = None,
+            directory = list(self.config[v.type].keys()),
+            config = None,
+            error = None,
+        )
+
+    async def handle_getvalues(self, v, id):
+
+        if v.type not in self.config:
+
+            return ConfigResponse(
+                version = None,
+                values = None,
+                directory = None,
+                config = None,
+                error = Error(
+                    code = "key-error",
+                    message = f"Key error"
+                )
+            )
+
+        values = [
+            ConfigValue(
+                type = v.type,
+                key = k,
+                value = self.config[v.type][k],
+            )
+            for k in self.config[v.type]
+        ]
+
+        return ConfigResponse(
+            version = self.version,
+            values = values,
+            directory = None,
+            config = None,
+            error = None,
+        )
+
+    async def handle_delete(self, v, id):
+
+        for k in v.keys:
+            if k.type not in self.config or k.key not in self.config[k.type]:
+                return ConfigResponse(
+                    version = None,
+                    values = None,
+                    directory = None,
+                    config = None,
+                    error = Error(
+                        code = "key-error",
+                        message = f"Key error"
+                    )
+                )
+
+        for k in v.keys:
+            del self.config[k.type][k.key]
+
+        self.version += 1
+
+        await self.push()
+
+        return ConfigResponse(
+            version = None,
+            value = None,
+            directory = None,
+            values = None,
+            config = None,
+            error = None,
+        )
+
+    async def handle_put(self, v, id):
+
+        for k in v.values:
+            self.config[k.type][k.key] = k.value
+
+        self.version += 1
+
+        await self.push()
+
+        return ConfigResponse(
+            version = None,
+            value = None,
+            directory = None,
+            values = None,
+            error = None,
+        )
+
+    async def handle_config(self, v, id):
+
+        return ConfigResponse(
+            version = self.version,
+            value = None,
+            directory = None,
+            values = None,
+            config = self.config,
+            error = None,
+        )
+
+    async def push(self):
+
+        resp = ConfigPush(
+            version = self.version,
+            value = None,
+            directory = None,
+            values = None,
+            config = self.config,
+            error = None,
+        )
+        self.push_prod.send(resp)
+        print("Pushed.")
+        
+    async def handle(self, msg):
+
+        v = msg.value()
+
+        # Sender-produced ID
+        id = msg.properties()["id"]
+
+        print(f"Handling {id}...", flush=True)
+
+        try:
+
+            if v.operation == "get":
+
+                resp = await self.handle_get(v, id)
+
+            elif v.operation == "list":
+
+                resp = await self.handle_list(v, id)
+
+            elif v.operation == "getvalues":
+
+                resp = await self.handle_getvalues(v, id)
+
+            elif v.operation == "delete":
+
+                resp = await self.handle_delete(v, id)
+
+            elif v.operation == "put":
+
+                resp = await self.handle_put(v, id)
+
+            elif v.operation == "config":
+
+                resp = await self.handle_config(v, id)
+
+            else:
+
+                resp = ConfigResponse(
+                    value=None,
+                    directory=None,
+                    values=None,
+                    error=Error(
+                        code="bad-operation",
+                        message="Bad operation"
+                    )
+                )
+
+            await self.send(resp, properties={"id": id})
+
+            self.consumer.acknowledge(msg)
+
+        except Exception as e:
+                
+            resp = ConfigResponse(
+                error=Error(
+                    type = "unexpected-error",
+                    message = str(e),
+                ),
+                text=None,
+            )
+            await self.send(resp, properties={"id": id})
+            self.consumer.acknowledge(msg)
+
+    @staticmethod
+    def add_args(parser):
+
+        ConsumerProducer.add_args(
+            parser, default_input_queue, default_subscriber,
+            default_output_queue,
+        )
+
+        parser.add_argument(
+            '-q', '--push-queue',
+            default=default_push_queue,
+            help=f'Config push queue (default: {default_push_queue})'
+        )
+
+def run():
+
+    Processor.launch(module, __doc__)
+

trustgraph-flow/trustgraph/gateway/config.py

@@ -0,0 +1,77 @@
+
+from .. schema import ConfigRequest, ConfigResponse, ConfigKey, ConfigValue
+from .. schema import config_request_queue
+from .. schema import config_response_queue
+
+from . endpoint import ServiceEndpoint
+from . requestor import ServiceRequestor
+
+class ConfigRequestor(ServiceRequestor):
+    def __init__(self, pulsar_client, timeout, auth):
+
+        super(ConfigRequestor, self).__init__(
+            pulsar_client=pulsar_client,
+            request_queue=config_request_queue,
+            response_queue=config_response_queue,
+            request_schema=ConfigRequest,
+            response_schema=ConfigResponse,
+            timeout=timeout,
+        )
+
+    def to_request(self, body):
+
+        if "keys" in body:
+            keys = [
+                ConfigKey(
+                    type = k["type"],
+                    key = k["key"],
+                )
+                for k in body["keys"]
+            ]
+        else:
+            keys = None
+
+        if "values" in body:
+            values = [
+                ConfigValue(
+                    type = v["type"],
+                    key = v["key"],
+                    value = v["value"],
+                )
+                for v in body["values"]
+            ]
+        else:
+            values = None
+
+        return ConfigRequest(
+            operation = body.get("operation", None),
+            keys = keys,
+            type = body.get("type", None),
+            values = values
+        )
+
+    def from_response(self, message):
+
+        response = { }
+
+        if message.version:
+            response["version"] = message.version
+
+        if message.values:
+            response["values"] = [
+                {
+                    "type": v.type,
+                    "key": v.key,
+                    "value": v.value,
+                }
+                for v in message.values
+            ]
+
+        if message.directory:
+            response["directory"] = message.directory
+
+        if message.config:
+            response["config"] = message.config
+
+        return response, True
+

trustgraph-flow/trustgraph/gateway/service.py

@@ -38,6 +38,7 @@ from . agent import AgentRequestor
 from . dbpedia import DbpediaRequestor
 from . internet_search import InternetSearchRequestor
 from . librarian import LibrarianRequestor
+from . config import ConfigRequestor
 from . triples_stream import TriplesStreamEndpoint
 from . graph_embeddings_stream import GraphEmbeddingsStreamEndpoint
 from . document_embeddings_stream import DocumentEmbeddingsStreamEndpoint
@@ -141,6 +142,10 @@ class Api:
                 pulsar_client=self.pulsar_client, timeout=self.timeout,
                 auth = self.auth,
             ),
+            "config": ConfigRequestor(
+                pulsar_client=self.pulsar_client, timeout=self.timeout,
+                auth = self.auth,
+            ),
             "encyclopedia": EncyclopediaRequestor(
                 pulsar_client=self.pulsar_client, timeout=self.timeout,
                 auth = self.auth,
@@ -199,6 +204,10 @@ class Api:
                 endpoint_path = "/api/v1/librarian", auth=self.auth,
                 requestor = self.services["librarian"],
             ),
+            ServiceEndpoint(
+                endpoint_path = "/api/v1/config", auth=self.auth,
+                requestor = self.services["config"],
+            ),
             ServiceEndpoint(
                 endpoint_path = "/api/v1/encyclopedia", auth=self.auth,
                 requestor = self.services["encyclopedia"],