How can I act a step in the response part of my preflow based on the return status code?

[#1]

I want to activate a flow that will return a message if the status code isn't 200.

I use Apigee's mocktarget statuscode to mimic status code 400.

However, when I use trace I see two conditions, with the following expressions:

(((error.state equals TARGET_REQ_FLOW) or (error.state equals TARGET_RESP_FLOW)) or ((error.state equals REQ_SENT) or (error.state equals RESP_START)))

and

("default" equals target.name)

I have the following flow:

<PreFlow name="PreFlow">
        <Request/>
        <Response>
            <Step>
                <Name>slack-alert-flow</Name>
                <Condition>response.status.code != 200</Condition>
            </Step>
        </Response>
    </PreFlow>

If the condition is true it should go to a shared flow with the following assign message policy:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<AssignMessage async="false" continueOnError="false" enabled="true" name="return-failure">
    <DisplayName>return failure</DisplayName>
    <Properties/>
    <Set>
        <Payload contentType="text/plain">Your call failed</Payload>
    </Set>
    <IgnoreUnresolvedVariables>true</IgnoreUnresolvedVariables>
    <AssignTo createNew="false" transport="http" type="response"/>
</AssignMessage>

How can I return the payload created in the assign message policy to the end user?

[#2 · Accepted solution]

Hi @Friso Denijs, If the status code is => 400 it automatically goes to the fault rule, you either add your policies in the fault rules (http://docs.apigee.com/api-services/content/fault-handling) or you can add success.codes in your target endpoint definition as mentioned here http://docs.apigee.com/api-services/reference/endpoint-properties-reference