How to confirm Webhook POST is being received in Coldfusion - json

Question

To be clear upfront, I'm not a professional - just trying to get a task done and I have minimal expertise. What I thought would be easy is apparently not so. I've dealt with APIs and XML but it's always been me initiating. This is apparently different.
Goal:
Receive HTTP POST Webhook data (JSON) from my Wordpress/Woocommerce website.
Problem:
The Webhook is working and being received perfectly by RequestBin.The JSON string is being sent over HTTP. But I'm not even sure the request is being heard by my CF Template. When I try to write the received data into a session variable so I can at least see it, nothing is there?!?! How do I find out if my code being triggered?
First line of code in my CF Template:
<cfset HTTPRequestData = deserializeJSON(ToString(getHTTPRequestData().content))>
Example from RequestBin of data being sent:
{
"id": 259609,
"parent_id": 0,
"number": "CW-104-270219",
"order_key": "xxxxxxxxxxxx",
"created_via": "checkout",
"version": "3.5.5",
"status": "completed",
"currency": "USD",
"date_created": "2019-02-27T15:11:58",
"date_created_gmt": "2019-02-27T20:11:58",
"date_modified": "2019-02-27T15:11:59",
"date_modified_gmt": "2019-02-27T20:11:59",
"discount_total": "0.00",
"discount_tax": "0.00",
"shipping_total": "0.00",
"shipping_tax": "0.00",
"cart_tax": "0.00",
"total": "9.68",
"total_tax": "0.00",
"prices_include_tax": false,
"customer_id": 2,
"customer_ip_address": "xxxxxxxxxxxx",
"customer_user_agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.119 Safari/537.36",
"customer_note": "",
"billing": {
"first_name": "Valerie",
"last_name": "Criswell",
"company": "",
"address_1": "",
"address_2": "",
"city": "",
"state": "",
"postcode": "",
"country": "",
"email": "xxxxxxxxxx",
"phone": ""
},
"shipping": {
"first_name": "",
"last_name": "",
"company": "",
"address_1": "",
"address_2": "",
"city": "",
"state": "",
"postcode": "",
"country": ""
},
"payment_method": "authorize_net_aim",
"payment_method_title": "Credit Card",
"transaction_id": "xxxxxxxxxxxxx",
"date_paid": "2019-02-27T15:11:59",
"date_paid_gmt": "2019-02-27T20:11:59",
"date_completed": "2019-02-27T15:11:59",
"date_completed_gmt": "2019-02-27T20:11:59",
"cart_hash": "xxxxxxxxxxxxx",
"meta_data": [
{
"id": 8785641,
"key": "_wcson_order_number",
"value": "CWD-259609-022719-108"
},
{
"id": 8785642,
"key": "_order_number",
"value": "104"
},
{
"id": 8785643,
"key": "_order_number_formatted",
"value": "CW-104-270219"
},
{
"id": 8785644,
"key": "_order_number_meta",
"value": {
"prefix": "CW-",
"suffix": "-{DD}{MM}{YY}",
"length": "2"
}
},
{
"id": 8785645,
"key": "_wc_authorize_net_aim_retry_count",
"value": "0"
},
{
"id": 8785646,
"key": "_wc_authorize_net_aim_trans_id",
"value": "xxxxxxxx"
},
{
"id": 8785647,
"key": "_wc_authorize_net_aim_trans_date",
"value": "2019-02-27 15:11:59"
},
{
"id": 8785648,
"key": "_wc_authorize_net_aim_environment",
"value": "production"
},
{
"id": 8785649,
"key": "_wc_authorize_net_aim_account_four",
"value": "xxxxxxxx"
},
{
"id": 8785650,
"key": "_wc_authorize_net_aim_authorization_amount",
"value": "xxxxxxx"
},
{
"id": 8785651,
"key": "_wc_authorize_net_aim_authorization_code",
"value": "xxxxxxx"
},
{
"id": 8785652,
"key": "_wc_authorize_net_aim_charge_captured",
"value": "yes"
},
{
"id": 8785653,
"key": "_wc_authorize_net_aim_card_expiry_date",
"value": "21-08"
},
{
"id": 8785654,
"key": "_wc_authorize_net_aim_card_type",
"value": "mastercard"
},
{
"id": 8785659,
"key": "_pip_invoice_number",
"value": "CW-104-270219"
},
{
"id": 8785660,
"key": "_wc_pip_invoice_email_count",
"value": "1"
},
{
"id": 8785661,
"key": "_wc_pip_packing_list_email_count",
"value": "1"
}
],
"line_items": [
{
"id": 17,
"name": "I Give Myself Away - MP3 Download - 30 Day Access",
"product_id": 192127,
"variation_id": 192128,
"quantity": 1,
"tax_class": "",
"subtotal": "9.68",
"subtotal_tax": "0.00",
"total": "9.68",
"total_tax": "0.00",
"taxes": [],
"meta_data": [
{
"id": 182,
"key": "pa_format",
"value": "download-30-day"
}
],
"sku": "131599-DL30DAY",
"price": 9.68
}
],
"tax_lines": [],
"shipping_lines": [],
"fee_lines": [],
"coupon_lines": [],
"refunds": []
}

Answer 1

Let's start with the stated goal:
Receive HTTP POST Webhook data from my Wordpress/Woocommerce website.
Can your Wordpress site hit the intended URL on your ColdFusion site? If so, can you record / dump the HTTP POST request to a file?
<cfdump var="#form#" format="html" output="/full/path/to/file">
This will tell you if you're even receiving the request correctly.