After you write code for a function, you must debug the function to verify whether the code is correct. This topic describes how to debug a function.

Procedure

You can refer to the following steps to debug a function, and adjust and apply them as required:

  1. Use a browser to trigger Function B.
    An authentication error is returned because the IP address of your computer is not added to the whitelist of Function B.
    {
    # Protected data is not returned due to the authentication error.
    "protected_data": "",
    "white_list": [
        "127.0.X.X",
        "X.X.X.X"
    ],
    "authorized": false,
    # The IP address of the visitor is returned.
    "remote_ip": "X.X.X.X"
}
  2. Use a browser to trigger Function A and obtain the results of invoking Function B by Function A with and without using the proxy.
    {
    "query_with_proxy_result": {
        "secret_data": "Alibaba",
        "success": true,
        "data_service_raw_data": {
            "remote_ip": "X.X.X.X",
            "white_list": [
                "127.0.X.X",
                "X.X.X.X"
            ],
            "authorized": true,
            "protected_data": "Alibaba"
        }
    },
    "query_without_proxy_result": {
        "secret_data": "",
        "success": false,
        "data_service_raw_data": {
            "remote_ip": "XX.XX.XX.XX",
            "white_list": [
                "127.0.X.X",
                "X.X.X.X"
            ],
            "authorized": false,
            "protected_data": ""
        }
    }
}
    If you obtain the protected data by using the proxy, the function code is correctly written.