import flask
import json
import requests

from opentelemetry import trace
from opentelemetry.ext import http_requests
from opentelemetry.ext.wsgi import OpenTelemetryMiddleware
from opentelemetry.sdk.trace import Tracer
from opentelemetry.sdk.trace.export import (
    ConsoleSpanExporter,
    SimpleExportSpanProcessor,
)

trace.set_preferred_tracer_implementation(lambda T: Tracer())

http_requests.enable(trace.tracer())
span_processor = SimpleExportSpanProcessor(ConsoleSpanExporter())
trace.tracer().add_span_processor(span_processor)

app = flask.Flask(__name__)
app.wsgi_app = OpenTelemetryMiddleware(app.wsgi_app)

@app.route("/", methods=["POST"])
def hello():
    for action in flask.request.json:
        requests.post(
            url=action["url"],
            data=json.dumps(action["arguments"]),
            headers={
                "Accept": "application/json",
                "Content-Type": "application/json; charset=utf-8",
            },
            timeout=5.0,
        )
    return "hello"

if __name__ == "__main__":
    app.run(debug=True)
    span_processor.shutdown()