Agent infrastructure with client and stub server

trustgraph-flow/trustgraph/agent/react/__init__.py

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+
+from . service import *
+

trustgraph-flow/trustgraph/agent/react/__main__.py

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+#!/usr/bin/env python3
+
+from . service import run
+
+if __name__ == '__main__':
+    run()
+

trustgraph-flow/trustgraph/agent/react/service.py

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+"""
+Simple agent infrastructure broadly implements the ReAct flow.
+"""
+
+import json
+import re
+
+from pulsar.schema import JsonSchema
+
+from ... base import ConsumerProducer
+from ... schema import Error
+from ... schema import AgentRequest, AgentResponse, AgentStep
+from ... schema import agent_request_queue, agent_response_queue
+from ... schema import prompt_request_queue as pr_request_queue
+from ... schema import prompt_response_queue as pr_response_queue
+from ... clients.prompt_client import PromptClient
+
+module = ".".join(__name__.split(".")[1:-1])
+
+default_input_queue = agent_request_queue
+default_output_queue = agent_response_queue
+default_subscriber = module
+
+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)
+        subscriber = params.get("subscriber", default_subscriber)
+        prompt_request_queue = params.get(
+            "prompt_request_queue", pr_request_queue
+        )
+        prompt_response_queue = params.get(
+            "prompt_response_queue", pr_response_queue
+        )
+
+        super(Processor, self).__init__(
+            **params | {
+                "input_queue": input_queue,
+                "output_queue": output_queue,
+                "subscriber": subscriber,
+                "input_schema": AgentRequest,
+                "output_schema": AgentResponse,
+                "prompt_request_queue": prompt_request_queue,
+                "prompt_response_queue": prompt_response_queue,
+            }
+        )
+
+        self.prompt = PromptClient(
+            subscriber=subscriber,
+            input_queue=prompt_request_queue,
+            output_queue=prompt_response_queue,
+            pulsar_host = self.pulsar_host
+        )
+
+        # Need to be able to feed requests to myself
+        self.recursive_input = self.client.create_producer(
+            topic=input_queue,
+            schema=JsonSchema(AgentRequest),
+        )
+
+    def parse_json(self, text):
+        json_match = re.search(r'```(?:json)?(.*?)```', text, re.DOTALL)
+    
+        if json_match:
+            json_str = json_match.group(1).strip()
+        else:
+            # If no delimiters, assume the entire output is JSON
+            json_str = text.strip()
+
+        return json.loads(json_str)
+
+    def handle(self, msg):
+
+        try:
+
+            v = msg.value()
+
+            # Sender-produced ID
+            id = msg.properties()["id"]
+
+            if v.history:
+                history = v.history
+            else:
+                history = []
+
+            if len(history) == 0:
+
+                print("Send response...", flush=True)
+
+                thought = "Maybe, just maybe..."
+
+                r = AgentResponse(
+                    answer=None,
+                    error=None,
+                    thought=thought,
+                )
+
+                self.producer.send(r, properties={"id": id})
+
+                r = AgentRequest(
+                    question=v.question,
+                    plan=v.plan,
+                    state=v.state,
+                    history=[
+                        AgentStep(
+                            thought=thought,
+                            action="asd",
+                            arguments={
+                                "asd": "def",
+                                "ghi": "alskd",
+                            },
+                            observation="hello world",
+                        )
+                    ]
+                )
+
+                self.recursive_input.send(r, properties={"id": id})
+
+                return
+
+            else:
+
+                r = AgentResponse(
+                    answer="Here is the answer",
+                    error=None,
+                    thought=None,
+                )
+
+                self.producer.send(r, properties={"id": id})
+
+                return
+
+        except Exception as e:
+
+            print(f"Exception: {e}")
+
+            print("Send error response...", flush=True)
+
+            r = AgentResponse(
+                error=Error(
+                    type = "agent-error",
+                    message = str(e),
+                ),
+                response=None,
+            )
+
+            self.producer.send(r, properties={"id": id})
+
+    @staticmethod
+    def add_args(parser):
+
+        ConsumerProducer.add_args(
+            parser, default_input_queue, default_subscriber,
+            default_output_queue,
+        )
+
+        parser.add_argument(
+            '--prompt-request-queue',
+            default=pr_request_queue,
+            help=f'Prompt request queue (default: {pr_request_queue})',
+        )
+
+        parser.add_argument(
+            '--prompt-response-queue',
+            default=pr_response_queue,
+            help=f'Prompt response queue (default: {pr_response_queue})',
+        )
+
+def run():
+
+    Processor.start(module, __doc__)
+