How to create task with m2m request

[csliangdu]

I have two servers, A and B. For server A, i got 3 requests, i.e., a1, a2, a3. Similarly, i got 3 request on server B, i.e., b1, b2, b3. Totally, i have 6 requests on 2 servers, each server with 3 requests.

In the example code, "HttpDiffRequestsDiffServersApp.java" and "HttpDiffRequestsSameServerApp.java". it has been show how to start requests {A.a1, B.b1} and {A.a1, A.a2, A.a3}.

Furthermore, in "ParallelTaskBuilder.setReplacementVarMapNodeSpecific()", it has "this.replacementVarMapNodeSpecific.clear();". Such code EXCLUDE the requests from other commands.

Is there any way to start requests {A.a1, A.a2, A.a3, B.b1, B.b2, B.b3} in one job?

Liang

[jeffpeiyt]

@csliangdu good question. I believe by looking at the implementation of the DiffRequestsSameServer we can do sth works for this.

Will be pretty busy this week and can dig deeper this weekend, if not earlier...

[csliangdu]

Thanks for your quick response.

By adding a new method setReplaceVarMapToMultipleTarget() in ParallelTaskBuilder, it seems the problem of building complex requests could be handled.

    public ParallelTaskBuilder setReplaceVarMapToMultipleTarget(
            String variable, List<List<String>> replaceLists, List<String> targetHosts ){
        if (replaceLists.size() != targetHosts.size()){
            logger.error("<replaceLists, targetHosts> should be same size ...");
            return this;
        }
        Map<String, StrStrMap> replacementVarMapNodeSpecificAll = new HashMap<String, StrStrMap>();
        List<String> targetHostsAll = new ArrayList<String>();
        for (int i = 0; i < replaceLists.size(); i++){
            setReplaceVarMapToSingleTargetSingleVar(variable, replaceLists.get(i), targetHosts.get(i));         
            for (Entry<String, StrStrMap> entry : this.replacementVarMapNodeSpecific
                    .entrySet()) {
                replacementVarMapNodeSpecificAll.put(entry.getKey() + "_" + i, entry.getValue());// with additional surfix
            }
            for (int j = 0; j < this.targetHosts.size(); j++){
                targetHostsAll.add(this.targetHosts.get(j) + "_" + i);// with additional surfix
            }
        }
        this.replacementVarMapNodeSpecific.clear();
        this.replacementVarMapNodeSpecific.putAll(replacementVarMapNodeSpecificAll);
        this.targetHosts.clear();
        this.targetHosts.addAll(targetHostsAll);        
        return this;
    }

Test

        ParallelTaskBuilder ptb = pc.prepareHttpGet("/$JOB_ID");

        List<List<String>> replaceLists = new ArrayList<List<String>>();
        List<String> targetHosts = new ArrayList<String>();

        //handle requests from server A
        targetHosts.add("A");
        List<String> replaceList = new ArrayList<String>();
        replaceList.add("a1");
        replaceList.add("a2");
        replaceList.add("a3");              
        replaceLists.add(replaceList);

        //handle requests from server B
        targetHosts.add("B");
        List<String> replaceList2 = new ArrayList<String>();
        replaceList2.add("b1");
        replaceList2.add("b2");
        replaceLists.add(replaceList2);

        ptb.setReplaceVarMapToMultipleTarget("JOB_ID", replaceLists, targetHosts);

However, I have no idea about its influence to the rest workflow.

Liang