Sn0rt commented on issue #9226: URL: https://github.com/apache/apisix/issues/9226#issuecomment-1496977212
try reproduce version info ``` the last commit of APISIX is `c86c05b72322a2267289c366eafc999107bb047c` ``` 1. install the golang process ``` curl http://localhost:3000 <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/";> <SOAP-ENV:Header/> <SOAP-ENV:Body> <ns2:CapitalCityResponse xmlns:ns2="http://spring.io/guides/gs-producing-web-service";> <ns2:CapitalCityResult>hello</ns2:CapitalCityResult> </ns2:CapitalCityResponse> </SOAP-ENV:Body> </SOAP-ENV:Envelope> ``` 2. confirm the router ```shell curl -X GET http://127.0.0.1:9180/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1'|jq % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 1542 0 1542 0 0 149k 0 --:--:-- --:--:-- --:--:-- 150k { "value": { "plugins": { "proxy-cache": { "cache_strategy": "memory", "cache_bypass": [ "$arg_bypass" ], "cache_http_status": [ 200 ], "cache_key": [ "$uri", "-cache-id" ], "cache_ttl": 300, "hide_cache_headers": true, "no_cache": [ "$arg_test" ], "cache_method": [ "POST" ], "cache_zone": "memory_cache", "cache_control": false }, "body-transformer": { "request": { "template": "<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\"; xmlns:web=\"http://www.oorsprong.org/websamples.countryinfo\";><soapenv:Header/><soapenv:Body><web:CapitalCity><web:sCountryISOCode>{{_escape_xml(country)}}</web:sCountryISOCode></web:CapitalCity></soapenv:Body></soapenv:Envelope>", "input_format": "json" }, "response": { "template": "{\"result\": {*_escape_json(Envelope.Body.CapitalCityResponse.CapitalCityResult)*}}", "input_format": "xml" } }, "file-logger": { "include_resp_body": false, "path": "logs/file.log" }, "proxy-rewrite": { "uri": "/websamples.countryinfo/CountryInfoService.wso", "headers": { "set": { "Accept-Encoding": "identity", "Content-Type": "text/xml" } }, "use_real_request_uri_unsafe": false }, "response-rewrite": { "headers": { "set": { "Content-Type": "application/json" } }, "body_base64": false } }, "uri": "/capital", "methods": [ "GET", "POST", "PUT", "DELETE", "PATCH", "HEAD", "OPTIONS", "CONNECT", "TRACE", "PURGE" ], "id": "1", "priority": 0, "status": 1, "create_time": 1680670219, "update_time": 1680674853, "upstream": { "nodes": { "localhost:3000": 1 }, "type": "roundrobin", "hash_on": "vars", "scheme": "http", "pass_host": "pass" }, "name": "TempConvertRoute" }, "createdIndex": 43, "modifiedIndex": 477, "key": "/apisix/routes/1" } ``` 3. however. I got a 5xx response ``` curl http://127.0.0.1:9080/capital -X POST -d '{"country":"foo"}' -v Note: Unnecessary use of -X or --request, POST is already inferred. * Trying 127.0.0.1:9080... * Connected to 127.0.0.1 (127.0.0.1) port 9080 (#0) > POST /capital HTTP/1.1 > Host: 127.0.0.1:9080 > User-Agent: curl/7.88.1 > Accept: */* > Content-Length: 17 > Content-Type: application/x-www-form-urlencoded > < HTTP/1.1 500 Internal Server Error < Date: Wed, 05 Apr 2023 06:18:56 GMT < Content-Type: application/json < Transfer-Encoding: chunked < Connection: close < Server: APISIX/3.2.0 < <html> <head><title>500 Internal Server Error</title></head> <body> <center><h1>500 Internal Server Error</h1></center> <hr><center>openresty</center> </body> </html> * Closing connection 0 ``` the error msg as follow ``` 2023/04/05 06:16:21 [error] 30746#30746: *17567 lua entry thread aborted: runtime error: /home/ec2-user/apisix/apisix/core/ctx.lua:309: variable "upstream_cache_key" not found for writing; maybe it is a built-in variable that is not changeable or you forgot to use "set $upstream_cache_key '';" in the config file to define it first stack traceback: coroutine 0: [C]: in function 'error' /usr/local/openresty/lualib/resty/core/var.lua:144: in function '__newindex' /home/ec2-user/apisix/apisix/core/ctx.lua:309: in function '__newindex' /home/ec2-user/apisix/apisix/plugins/proxy-cache/init.lua:151: in function 'phase_func' /home/ec2-user/apisix/apisix/plugin.lua:1094: in function 'run_plugin' /home/ec2-user/apisix/apisix/init.lua:666: in function 'http_access_phase' access_by_lua(nginx.conf:318):2: in main chunk, client: 127.0.0.1, server: _, request: "POST /capital HTTP/1.1", host: "127.0.0.1:9080" 2023/04/05 06:16:21 [error] 30746#30746: *17567 [lua] body-transformer.lua:123: transform(): response body decode: /home/ec2-user/apisix//deps/share/lua/5.1/xml2lua.lua:92: Unbalanced Tag (/body) [char=155] , body=<html> <head><title>500 Internal Server Error</title></head> <body> <center><h1>500 Internal Server Error</h1></center> <hr><center>openresty</center> </body> </html> , client: 127.0.0.1, server: _, request: "POST /capital HTTP/1.1", host: "127.0.0.1:9080" 2023/04/05 06:16:21 [error] 30746#30746: *17567 [lua] body-transformer.lua:202: phase_func(): failed to transform response body: <html> <head><title>500 Internal Server Error</title></head> <body> <center><h1>500 Internal Server Error</h1></center> <hr><center>openresty</center> </body> </html> , client: 127.0.0.1, server: _, request: "POST /capital HTTP/1.1", host: "127.0.0.1:9080" 2023/04/05 06:18:56 [error] 30746#30746: *21768 lua entry thread aborted: runtime error: /home/ec2-user/apisix/apisix/core/ctx.lua:309: variable "upstream_cache_key" not found for writing; maybe it is a built-in variable that is not changeable or you forgot to use "set $upstream_cache_key '';" in the config file to define it first stack traceback: coroutine 0: [C]: in function 'error' /usr/local/openresty/lualib/resty/core/var.lua:144: in function '__newindex' /home/ec2-user/apisix/apisix/core/ctx.lua:309: in function '__newindex' /home/ec2-user/apisix/apisix/plugins/proxy-cache/init.lua:151: in function 'phase_func' /home/ec2-user/apisix/apisix/plugin.lua:1094: in function 'run_plugin' /home/ec2-user/apisix/apisix/init.lua:666: in function 'http_access_phase' access_by_lua(nginx.conf:318):2: in main chunk, client: 127.0.0.1, server: _, request: "POST /capital HTTP/1.1", host: "127.0.0.1:9080" 2023/04/05 06:18:56 [error] 30746#30746: *21768 [lua] body-transformer.lua:123: transform(): response body decode: /home/ec2-user/apisix//deps/share/lua/5.1/xml2lua.lua:92: Unbalanced Tag (/body) [char=155] , body=<html> <head><title>500 Internal Server Error</title></head> <body> <center><h1>500 Internal Server Error</h1></center> <hr><center>openresty</center> </body> </html> , client: 127.0.0.1, server: _, request: "POST /capital HTTP/1.1", host: "127.0.0.1:9080" 2023/04/05 06:18:56 [error] 30746#30746: *21768 [lua] body-transformer.lua:202: phase_func(): failed to transform response body: <html> <head><title>500 Internal Server Error</title></head> <body> <center><h1>500 Internal Server Error</h1></center> <hr><center>openresty</center> </body> </html> , client: 127.0.0.1, server: _, request: "POST /capital HTTP/1.1", host: "127.0.0.1:9080" ``` -- This is an automated message from the Apache Git Service. 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