To indicate that a Worker has accepted or rejected a Task, you make an HTTP
POST
request to a Reservation instance resource. To do that, we need the
TaskSid, which is available via the web portal, and the ReservationSid. The
ReservationSid was passed to our Assignment Callback URL when a Worker was
reserved for our Task. Using the ngrok inspector page at
http://localhost:4040
, we can easily find the request parameters sent from
TaskRouter and copy the ReservationSid to our clipboard. **
The Reservation API resource is ephemeral and exists only within the context of a Task. As such, it doesn't have its own primary API resource and you'll find it documented in the Tasks resource section of the reference documentation.
With our trusty TaskSid and ReservationSid in hand, let's make another REST API request to accept our Task Reservation. We'll add on to our run.py to accept a reservation with our web server. Remember to substitute your own account details in place of the curly braces.
_49from flask import Flask, request, Response_49from twilio.rest import Client_49_49app = Flask(__name__)_49_49# Your Account Sid and Auth Token from twilio.com/user/account_49account_sid = "{{ account_sid }}"_49auth_token = "{{ auth_token }}"_49workspace_sid = "{{ workspace_sid }}"_49workflow_sid = "{{ workflow_sid }}"_49_49client = Client(account_sid, auth_token)_49_49@app.route("/assignment_callback", methods=['GET', 'POST'])_49def assignment_callback():_49 """Respond to assignment callbacks with empty 200 response"""_49_49 resp = Response({}, status=200, mimetype='application/json')_49 return resp_49_49@app.route("/create_task", methods=['GET', 'POST'])_49def create_task():_49 """Creating a Task"""_49 task = client.taskrouter.workspaces(workspace_sid).tasks.create(_49 workflow_sid=workflow_sid,_49 attributes='{"selected_language":"es"}'_49 )_49 print(task.attributes)_49 resp = Response({}, status=200, mimetype='application/json')_49 return resp_49_49@app.route("/accept_reservation", methods=['GET', 'POST'])_49def accept_reservation():_49 """Accepting a Reservation"""_49 task_sid = request.args.get('task_sid')_49 reservation_sid = request.args.get('reservation_sid')_49_49 reservation = client.taskrouter.workspaces(workspace_sid) \_49 .tasks(task_sid) \_49 .reservations(reservation_sid) \_49 .update(reservation_status='accepted')_49 print(reservation.reservation_status)_49 print(reservation.worker_name)_49_49 resp = Response({}, status=200, mimetype='application/json')_49 return resp_49_49if __name__ == "__main__":_49 app.run(debug=True)
If you'd like to use curl instead, put the following into your terminal:
_10curl -X POST https://taskrouter.twilio.com/v1/Workspaces/{WorkspaceSid}/Tasks/{TaskSid}/Reservations/{ReservationSid} _10-d ReservationStatus=accepted_10-u {AccountSid}:{AuthToken}
Examining the response from TaskRouter, we see that the Task Reservation has been accepted, and the Task has been assigned to the our Worker Alice:
_10{... "worker_name": "Alice", "reservation_status": "accepted", ...}
If you don't see this, it's possible that your Reservation has timed out. If this is the case, set your Worker back to an available Activity state and create another Task. To prevent this occuring, you can increase the 'Task Reservation Timeout' value in your Workflow configuration.
With your Workspace open in the TaskRouter web portal, click 'Workers' and you'll see that Alice has been transitioned to the 'Assignment Activity' of the TaskQueue that assigned the Task. In this case, "Busy":
Hurrah! We've made it to the end of the Task lifecycle:
Task Created → eligible Worker becomes available → Worker reserved → Reservation accepted → Task assigned to Worker.
In the next steps, we'll examine more ways to perform common Task acception and rejection workflows.
Next: Accept a Reservation using Assignment Instructions »
** If you're not using ngrok or a similar tool, you can modify run.py to print the value of ReservationSid to your web server log. Or, you can use the Tasks REST API instance resource to look up the ReservationSid based on the TaskSid.