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from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
import requests
app = FastAPI(title="Ticket Routing Service (Orchestrator)")
# ---------- Ticket Model ----------
class Ticket(BaseModel):
channel: str
severity: str
summary: str
# ---------- Service URLs ----------
SYNC_SERVICE_URL = "http://localhost:8001/sync_ticket" # Sync service API
ASYNC_SERVICE_URL = "http://localhost:8002/async_ticket" # Async service API
ASYNC_RESULT_URL = "http://localhost:8002/result" # Async service RESULT API
# ---------- Routing API ----------
@app.post("/ticket")
def route_ticket(ticket: Ticket):
"""
Receives a ticket from frontend (Streamlit) and routes
to Sync or Async service based on severity
"""
try:
if ticket.severity.lower() == "high":
# route to Sync Service
response = requests.post(SYNC_SERVICE_URL, json=ticket.dict())
else:
# route to Async Service
response = requests.post(ASYNC_SERVICE_URL, json=ticket.dict())
response.raise_for_status() # Raise an exception for 4xx/5xx errors
return response.json()
except requests.exceptions.RequestException as e:
print(f"Error connecting to microservice: {e}")
raise HTTPException(status_code=503, detail="Service unavailable")
# --- !!! NEW ENDPOINT TO FIX THE 404 ERROR !!! ---
@app.get("/result/{ticket_id}")
def get_async_result(ticket_id: str):
"""
Forwards the result request from the frontend to the async microservice.
"""
try:
# Construct the full URL to the async service's result endpoint
url = f"{ASYNC_RESULT_URL}/{ticket_id}"
response = requests.get(url)
response.raise_for_status() # Check for errors from the async service
return response.json()
except requests.exceptions.RequestException as e:
print(f"Error connecting to async result service: {e}")
# If the async service can't be reached
raise HTTPException(status_code=503, detail="Async service unavailable")
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