add logging for prow

conf/moicen/prow.conf

@@ -3,6 +3,7 @@ server {
     listen 443 ssl;
     listen 80;
     client_max_body_size 10M;
+    access_by_lua_file /usr/local/openresty/nginx/scripts/log_to_webhook.lua;
 
     # disable in local test env
      ssl_certificate /etc/letsencrypt/live/moicen.com/fullchain.pem; # managed by Certbot

scripts/log_to_webhook.lua

@@ -0,0 +1,66 @@
+-- cd /tmp
+-- wget https://luarocks.org/releases/luarocks-3.11.1.tar.gz
+-- tar zxpf luarocks-3.11.1.tar.gz
+-- cd luarocks-3.11.1
+-- ./configure --with-lua=/usr/local/openresty/luajit
+-- make
+-- make install
+--
+-- /usr/local/bin/luarocks install lua-resty-http
+--
+-- /usr/local/bin/luarocks list
+
+package.path = package.path .. ';/usr/local/openresty/nginx/scripts/?.lua';
+
+local cjson = require "cjson"
+
+-- Collect request details
+local request_data = {
+    method = ngx.var.request_method,
+    uri = ngx.var.request_uri,
+    headers = ngx.req.get_headers(),
+    body = nil,
+    remote_addr = ngx.var.remote_addr,
+    timestamp = ngx.now(),
+    protocol = ngx.var.server_protocol,
+    query_string = ngx.var.query_string or "",
+    request_length = ngx.var.request_length
+}
+
+-- Capture request body (if any)
+ngx.req.read_body()
+local body = ngx.req.get_body_data()
+if body then
+    request_data.body = body
+elseif ngx.req.get_body_file() then
+    local file = ngx.req.get_body_file()
+    local f, err = io.open(file, "r")
+    if f then
+        request_data.body = f:read("*all")
+        f:close()
+    else
+        ngx.log(ngx.ERR, "Failed to read body file: ", err)
+        request_data.body_error = err
+    end
+end
+
+-- Remove sensitive headers
+request_data.headers.Authorization = nil
+request_data.headers.HtySudoerToken = nil
+
+-- Encode as JSON
+local json_payload, encode_err = cjson.encode(request_data)
+if not json_payload then
+    ngx.log(ngx.ERR, "Failed to encode JSON: ", encode_err)
+    return
+end
+
+-- Write to log file
+local log_file_path = "/tmp/prow_requests.log"
+local file, err = io.open(log_file_path, "a")
+if file then
+    file:write(json_payload .. "\n")
+    file:close()
+else
+    ngx.log(ngx.ERR, "Failed to write to log file: ", err)
+end