[GitHub] [apisix-docker] DebbyMiressa commented on issue #443: No body-transformer plugin

["DebbyMiressa (via GitHub)" <gi...@apache.org>]

DebbyMiressa commented on issue #443:
URL: https://github.com/apache/apisix-docker/issues/443#issuecomment-1477494203

   The Body-Transformer plugin exists in APISIX V3.2.0 if you check the [schema.json](http://localhost:9092/v1/schema) file. There is currently a bug in which the plugin schema is not synchronized with the plugins listed in the [dashboard](http://localhost:9000/plugin/market). Until they push a bug-fix on their next release, maybe try using the command line to enable and configure the plugin. 
   Here is a code snippet that transforms the request body from JSON to XML and transforms the response body from XML to JSON. Before using the code below, change the req_template and res_template to your needs and make sure it applies to your requirements.
   ```sh
   req_template=$(cat <<EOF | awk '{gsub(/"/,"\\\"");};1' | awk '{$1=$1};1' | tr -d '\r\n'
   <?xml version="1.0"?>
   <soap-env:Envelope xmlns:soap-env="http://schemas.xmlsoap.org/soap/envelope/">
    <soap-env:Body>
     <ns0:getCountryRequest xmlns:ns0="http://spring.io/guides/gs-producing-web-service">
      <ns0:name>{{_escape_xml(name)}}</ns0:name>
     </ns0:getCountryRequest>
    </soap-env:Body>
   </soap-env:Envelope>
   EOF
   )
   
   rsp_template=$(cat <<EOF | awk '{gsub(/"/,"\\\"");};1' | awk '{$1=$1};1' | tr -d '\r\n'
   {% if Envelope.Body.Fault == nil then %}
   {
      "status":"{{_ctx.var.status}}",
      "currency":"{{Envelope.Body.getCountryResponse.country.currency}}",
      "population":{{Envelope.Body.getCountryResponse.country.population}},
      "capital":"{{Envelope.Body.getCountryResponse.country.capital}}",
      "name":"{{Envelope.Body.getCountryResponse.country.name}}"
   }
   {% else %}
   {
      "message":{*_escape_json(Envelope.Body.Fault.faultstring[1])*},
      "code":"{{Envelope.Body.Fault.faultcode}}"
      {% if Envelope.Body.Fault.faultactor ~= nil then %}
      , "actor":"{{Envelope.Body.Fault.faultactor}}"
      {% end %}
   }
   {% end %}
   EOF
   )
   
   curl http://127.0.0.1:9180/apisix/admin/routes/test_ws \
       -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
   {
       "methods": ["POST"],
       "uri": "/ws",
       "plugins": {
           "proxy-rewrite": {
               "headers": {
                   "set": {
                       "Accept-Encoding": "identity",
                       "Content-Type": "text/xml"
                   }
               }
           },
           "response-rewrite": {
               "headers": {
                   "set": {
                       "Content-Type": "application/json"
                   }
               }
           },
           "body-transformer": {
               "request": {
                   "template": "'"$req_template"'"
               },
               "response": {
                   "template": "'"$rsp_template"'"
               }
           }
       },
       "upstream": {
           "type": "roundrobin",
           "nodes": {
               "localhost:8080": 1
           }
       }
   }'
   
   curl -s http://127.0.0.1:9080/ws -H 'content-type: application/json' -X POST -d '{"name": "Spain"}' | jq
   {
     "status": "200",
     "currency": "EUR",
     "population": 46704314,
     "capital": "Madrid",
     "name": "Spain"
   }
   
   # Fault response
   curl -s http://127.0.0.1:9080/ws -H 'content-type: application/json' -X POST -d '{"name": "Spain"}' | jq
   {
     "message": "Your name is required.",
     "code": "SOAP-ENV:Server"
   }
   ```


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