How to build a java preprocessor for an object service right?

HCL Volt MX Volt MX Forum
,
1

Followinfg the docs, I created the preprocessor below:

package com.hcl.voessing;

import java.util.HashMap;

import java.util.Map;


import com.hcl.voltmx.middleware.common.DataPreProcessor2;

import com.hcl.voltmx.middleware.controller.DataControllerRequest;

import com.hcl.voltmx.middleware.controller.DataControllerResponse;

import com.hcl.voltmx.middleware.dataobject.Result;


public class AttachmentBinaryCreatePreProcessor implements DataPreProcessor2 {


@Override
public boolean execute(HashMap arg0, DataControllerRequest arg1,
        DataControllerResponse arg2, Result arg3) throws Exception {

    System.out.println("Pre-Processor started");

    // Below sample code is to append input params to the request

    // String content = arg1.getAttribute("AttachmentRT");

    // if (content != null) {
    // arg2.setAttribute("AttachmentRT", "PreProcessor");
    // System.out.println(content);

    // }

    System.out.println("Pre-Processor ended");

    return true;
}



}

I can now select the following in my object service after uploading the jar to my service:

Community-Pasted-Attachment-1657370121434.png710×365 10.9 KB

Besides that one, all other methods from the middleware.jar are also selectable from the dropdown - but not my new class from above.

The execution of the service fails with 

[MFSDK][DEBUG][9.7.2022 14:27:13][app.js][parseHttpResponse][18755] : parseHttpResponse :: Network response :{"opstatus":16000,"errmsg":"Execution of request processor [com.hcl.voltmx.middleware.common.DataPreProcessor2] failed with error."}

voltmx.js:170 [MFSDK][TRACE][9.7.2022 14:27:13][app.js][Function.voltmx.sdk.setLogLevelFromServerResponse][10933] : Entering into voltmx.sdk.setLogLevelFromServerResponse

voltmx.js:170 [MFSDK][TRACE][9.7.2022 14:27:13][app.js][networkerror][10384] : Entering networkerror

voltmx.js:170 [MFSDK][PERF][9.7.2022 14:27:13][app.js][networkerror][10396] : Executing Finished invokeObjectOperation

voltmx.js:170 [MFSDK][TRACE][9.7.2022 14:27:13][app.js][Object.voltmx.sdk.error.getObjectServiceErrObj][6997] : Entering into voltmx.sdk.error.getObjectServiceErrObj

voltmx.js:170 [MFSDK][ERROR][9.7.2022 14:27:13][app.js][invokeFailureCallback][10201] : ### OnlineObjectService::_customverb::invokeFailureCallback Error:{

“opstatus”: 16000,

“errmsg”: “Execution of request processor [com.hcl.voltmx.middleware.common.DataPreProcessor2] failed with error.”,

“httpresponse”: {

“headers”: {

“access-control-allow-methods”: “GET, HEAD, POST, TRACE, OPTIONS, PUT, DELETE, PATCH”,

“access-control-allow-origin”: “*”,

“content-length”: “133”,

“content-type”: “application/json;charset=UTF-8”,

“date”: “Sat, 09 Jul 2022 12:27:13 GMT”,

“server”: “nginx”,

“x-voltmx-requestid”: “0782786b-6fc4-49e7-a0f4-9bbf657d50b2”

},

“url”: “https://mxfoundry.voessing.de/services/data/v1/fieldreportsOS/operations/Attachment/createBinary”,

“responsecode”: 200

}

}

Since my preprocessor does nothing, what am I doing wrong?

2

First of all, it was very helpful to have the same JDK on the dev windows machine that's also running foundry. 😁😁

Doing so, I achieved to be able to select my ProProcessor in the service:

Community-Pasted-Attachment-1657380415673.png731×381 11.9 KB

But still:

[MFSDK][ERROR][9.7.2022 17:29:31][app.js][invokeFailureCallback][10201] : ### OnlineObjectService::_customverb::invokeFailureCallback Error:{
 "opstatus": 16000,
 "errmsg": "Execution of request processor [null] failed with error.",
 "httpresponse": {
  "headers": {
   "access-control-allow-methods": "GET, HEAD, POST, TRACE, OPTIONS, PUT, DELETE, PATCH",
   "access-control-allow-origin": "*",
   "content-length": "87",
   "content-type": "application/json;charset=UTF-8",
   "date": "Sat, 09 Jul 2022 15:29:31 GMT",
   "server": "nginx",
   "x-voltmx-requestid": "9ad26f80-9b5f-4251-a1be-e2884c99293a"
  },
  "url": "https://mxfoundry.voessing.de/services/data/v1/fieldreportsOS/operations/Attachment/createBinary",
  "responsecode": 200
 }
}