How to set request parameters in TargetEndPoint

Google Cloud Apigee
1
  • I have a request coming to API Proxy.
  • First I have Assign Message Policy which prepares the Request.
  • Then It is intercepted by Service CallOut Policy where it hits the service with above Request and it returns the JSON.
  • Then I have Extract Variables Policy which parse the JSON and sets the variables.
  • Now I want to send some of these extracted variables to TargetEndPoint

What should be the approach ?

2

Hi @GAURAV can you upload your proxy here?

Basically it should take an Assign Message policy (in Target Endpoint / Pre-Flow / Request Segment) to do what you describe here.

For eg assuming the extracted variable name is “extracted_variable”:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<AssignMessage async="false" continueOnError="false" enabled="true" name="Set-Target-Endpoint-Query-Parameters">
  <DisplayName>Set Target Endpoint Query Parameters</DisplayName>
  <Add>
    <QueryParams>
      <QueryParam name="new_param">{extracted_variable}</QueryParam>
    </QueryParams>
  </Add>
</AssignMessage>
1 Like
3

You can use AssignMessage policy in your TargetEndpoint preflow or conditional flow,and use the same extracted variable names.

4

Hi @Prithpal Bhogill

Thanks. I will try the above solution and let you know the result.

5

Hi @Prithpal Bhogill

I was able to set the variable in query param as suggested above.

Please do tell how we can set in request header.

Thans

6

You can use the Headers element to do that:

<Headers>

    <Header name="new_header">{extracted_variable}</Header>

</Headers>
7

Hi @Prithpal Bhogill

How to set this extracted variable in request cookies ?

Thanks

8

You can take a look at this page in the doc. It has examples of using AssignMessage to set query params, headers, and other parts of a request or response.

Stephen