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106 lines
3.5 KiB
Python
106 lines
3.5 KiB
Python
"""Twilio telephony routes (webhooks, status callbacks, answer URLs).
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Mounted under ``/api/v1/telephony`` by ``api.routes.telephony`` via the
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provider registry — see ProviderSpec.router.
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"""
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import json
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from typing import Optional
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from fastapi import APIRouter, Header, Request
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from loguru import logger
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from starlette.responses import HTMLResponse
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from api.db import db_client
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from api.services.telephony.factory import get_telephony_provider
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from api.services.telephony.status_processor import (
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StatusCallbackRequest,
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_process_status_update,
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)
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from api.utils.common import get_backend_endpoints
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from pipecat.utils.run_context import set_current_run_id
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router = APIRouter()
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@router.post("/twiml", include_in_schema=False)
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async def handle_twiml_webhook(
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workflow_id: int, user_id: int, workflow_run_id: int, organization_id: int
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):
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"""
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Handle initial webhook from telephony provider.
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Returns provider-specific response (e.g., TwiML for Twilio).
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"""
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provider = await get_telephony_provider(organization_id)
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response_content = await provider.get_webhook_response(
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workflow_id, user_id, workflow_run_id
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)
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return HTMLResponse(content=response_content, media_type="application/xml")
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@router.post("/twilio/status-callback/{workflow_run_id}")
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async def handle_twilio_status_callback(
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workflow_run_id: int,
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request: Request,
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x_webhook_signature: Optional[str] = Header(None),
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):
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"""Handle Twilio-specific status callbacks."""
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set_current_run_id(workflow_run_id)
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# Parse form data
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form_data = await request.form()
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callback_data = dict(form_data)
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logger.info(
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f"[run {workflow_run_id}] Received status callback: {json.dumps(callback_data)}"
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)
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# Get workflow run to find organization
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workflow_run = await db_client.get_workflow_run_by_id(workflow_run_id)
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if not workflow_run:
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logger.warning(f"Workflow run {workflow_run_id} not found for status callback")
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return {"status": "ignored", "reason": "workflow_run_not_found"}
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# Get workflow and provider
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workflow = await db_client.get_workflow_by_id(workflow_run.workflow_id)
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if not workflow:
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logger.warning(f"Workflow {workflow_run.workflow_id} not found")
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return {"status": "ignored", "reason": "workflow_not_found"}
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provider = await get_telephony_provider(workflow.organization_id)
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if x_webhook_signature:
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backend_endpoint, _ = await get_backend_endpoints()
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full_url = f"{backend_endpoint}/api/v1/telephony/twilio/status-callback/{workflow_run_id}"
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is_valid = await provider.verify_webhook_signature(
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full_url, callback_data, x_webhook_signature
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)
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if not is_valid:
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logger.warning(
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f"Invalid webhook signature for workflow run {workflow_run_id}"
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)
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return {"status": "error", "reason": "invalid_signature"}
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# Parse the callback data into generic format
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parsed_data = provider.parse_status_callback(callback_data)
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# Create StatusCallbackRequest from parsed data
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status_update = StatusCallbackRequest(
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call_id=parsed_data["call_id"],
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status=parsed_data["status"],
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from_number=parsed_data.get("from_number"),
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to_number=parsed_data.get("to_number"),
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direction=parsed_data.get("direction"),
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duration=parsed_data.get("duration"),
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extra=parsed_data.get("extra", {}),
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)
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# Process the status update
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await _process_status_update(workflow_run_id, status_update)
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return {"status": "success"}
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