How to reset quota in FaultRules when quota define...

Report Inappropriate Content · 12-16-2018 01:29 AM

Generally if I put quota and reset quota in the same shared flow or if put quota in api proxy preflow and reset quota in FaultRules - all will work. But if I'd like split logic to shared flow so that one policy stay in proxy and other moved in shared flow - it doesn't work. Can please anybody help me how I can defined quota in shared flow and reset it in FaultRules? Second question: is it possible to reset quota in separeate call? errir is: Quota policy impose-quota is not attached.

sidd-harth

Hi @Aliaksei Drapun, I didn't have any issue with this config,

how I can defined quota in shared flow and reset it in FaultRules

I used Quota(2 calls per minute) in SharedFlow and ResetQuota(5 calls per minutes) in Proxy FaultRules.

In Fault Rules, I am using an Assign Message policy to provide some custom message and a ResetQuota to add 5 more calls. This config is illogical, just for the sake of this example.

<FaultRules>
        <FaultRule name="quota-violation">
            <Step>
                <Name>fault_Quota-Limit</Name>
            </Step>
            <Step>
                <Name>Add-Quota</Name>
            </Step>
            <Condition>(fault.name == "QuotaViolation")</Condition>
        </FaultRule>
    </FaultRules>

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<AssignMessage async="false" continueOnError="false" enabled="true" name="fault_Quota-Limit">
    <DisplayName>fault_Quota-Limit</DisplayName>
    <Set>
        <Headers>
            <Header name="X-API-Error">{faultString}</Header>
        </Headers>
        <Payload contentType="application/json">
            \{"error":"Rate limit quota violation.",
              "detail":"Quota is set at 2pm",
              "note":"Reset Quota in fault rules would active after this error and add 5 more request to quota"}
        </Payload>
        <StatusCode>429</StatusCode>
        <ReasonPhrase>Quota Requests Exceeded</ReasonPhrase>
    </Set>
    <IgnoreUnresolvedVariables>true</IgnoreUnresolvedVariables>
    <AssignTo createNew="false" transport="http" type="request"/>
</AssignMessage>

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ResetQuota async="false" continueOnError="false" enabled="true" name="Add-Quota">
    <DisplayName>Add-Quota</DisplayName>
    <Properties/>
<!-- Quota name  - should be the same name used for Quota policy in SharedFlow -->
    <Quota name="Quota-1"> 
        <Identifier name="_default">
            <Allow>5</Allow>
        </Identifier>
    </Quota>
</ResetQuota>

Second question: is it possible to reset quota in separeate call? errir is: Quota policy impose-quota is not attached.

This error is given by ResetQuota Policy, check the name of the Quota used.

What do you mean by the separate call?

Mohit_Baveja

ResetQuota is only allowed if Quota policy is defined in the same proxy. If Quota policy is maintained in shared flows, reset quota is supposed to give error.

Mohit_Baveja

Based on the exception above, is there any way to maintain global quota counter if we have to also reset it globally on breaching.

How to reset quota in FaultRules when quota defined in shared flow