from flask import Flask
import requests

app = Flask(__name__)

SERVICE_A_URL = 'http://localhost:8081/a'

@app.route('/b', methods=['GET'])
def call_service_a():
    response = requests.get(SERVICE_A_URL)
    if response.status_code == 200:
        return f"Hello, I'am Server B and {response.text} from Service A'
    else:
        return 'Error calling Service A'

if __name__ == '__main__':
    app.run(host='0.0.0.0',port=8082)

pip3 install flask
pip3 install apache-skywalking
pip3 install requests

export SW_AGENT_COLLECTOR_BACKEND_SERVICES=localhost:11800
export SW_AGENT_NAME=BService-python

sw-python run python3 BService.py