How to modify request verb from POST to GET?

[nagashree_b]

I tried using the AssignMessage Policy below

<AssignMessage name="AssignMessage-3">
  <AssignTo createNew="true" type="request">request1 </AssignTo>
  <Add>
    <QueryParams>
        <QueryParam name="ql">select password where username='{proxy.username}'</QueryParam>
    </QueryParams> 
</Add> 
    <AssignVariable>
        <Name>request.verb</Name>
      <Value>GET</Value>
    </AssignVariable>
  <AssignVariable>
        <Name>target.url</Name>
        <Value>https://api.usergrid.com/nagashree.b/digitalbranch/appusers</Value>
    </AssignVariable>
  <IgnoreUnresolvedVariables>false</IgnoreUnresolvedVariables>
</AssignMessage>

Couldnt get it to work. Tried javascript callout on the target endpoint as well.Couldnt get that to work as well. Any pointers if i am missing something or doing something really stupid?

var username = context.getVariable("apigee.username");  

var targeturl = "https://api.usergrid.com/nagashree.b/digitalbranch/appusers";


targeturl = targeturl+"?ql=select password where username='"+username+"'"; conte
xt.setVariable('target.url', targeturl);


context.setVariable('target.verb', 'GET');

[gnanasekaran]

The way you are setting target.url seem correct to me,

for Verb,

In AssignMessage polic attached to the TargetEndpoint [either pre or post flow], you could use <Set><Verb>POST|GET</Verb></Set> to set the verb to POST or GET.

[nagashree_b]

Thanks. The Set option is fine. Now I have a new pbm. the {proxy.username} isnt resolving to a value

In the trace, the target.url is shown as https://api.usergrid.com/nagashree.b/digitalbranch/appusers?ql=select password where username='{proxy.username}'

The query parameter isnt getting set. Anything that needs to be doen for this?

This is my extract variables policy and the payload sent in the POST request.

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ExtractVariables async="false" continueOnError="false" enabled="true" name="Extract-Variables-1">
    <DisplayName>Extract Variables 1</DisplayName>
    <FaultRules/>
    <Properties/>
    <IgnoreUnresolvedVariables>true</IgnoreUnresolvedVariables>
    <JSONPayload>
        <Variable name="username"> 
            <JSONPath>$.username</JSONPath>
        </Variable>
        <Variable name="password">
            <JSONPath>$.password</JSONPath>
        </Variable>
    </JSONPayload>
    <Source clearPayload="false">request</Source>
    <VariablePrefix></VariablePrefix>
</ExtractVariables>

{ "username":"john.nash", "password":"John@123" }

[nagashree_b · Accepted solution]

Resolved it. Seems very silly, I had no content-type header set in the POST request :(. Lost close to 3 hours due to that.

[birute]

@Nagashree B Thanks for sharing the root problem. I'm sure someone else will appreciate you saving them 3 hours 🙂