[Dev] [ESB] Issue in Load Balanced Endpoint when one end point is unavailable

[Dilini Muthumala]

Hi,

I created an API with a load-balanced endpoint (*endpoint_0*). Configuration
attached as LBApi.xml.

<api xmlns="http://ws.apache.org/ns/synapse"; name="LBApi" context="/LBApi">
   <resource methods="POST GET OPTIONS DELETE PUT">
      <inSequence>
         <send>
            <endpoint key="*endpoint_0*"></endpoint>
         </send>
         <log level="full" xmlns="http://ws.apache.org/ns/synapse"/>
      </inSequence>
      <outSequence>
         <send></send>
      </outSequence>
   </resource>
</api>

Let's say *endpoint_0* consist of three endpoints and the load is balanced
among those three endpoints. Configuration of endpoint_0 is attached as
endpoint_0.xml.

When (at least) one endpoint is unavailable I noticed that the log mediator
in the api doesn't get executed (generally, what ever given after the send
mediator doesn't get executed).

I used ESB 4.8.1.
Just want to know if this is a known issue or I have missed something when
configuring; I will create a Jira if not.

Thanks,
Dilini

-- 
*Dilini Muthumala*
Software Engineer,
WSO2 Inc.

*E-mail :* dil...@wso2.com
*Mobile: *+94713 400 029

<?xml version="1.0" encoding="UTF-8"?>
<api xmlns="http://ws.apache.org/ns/synapse"; name="LBApi" context="/LBApi">
   <resource methods="POST GET OPTIONS DELETE PUT">
      <inSequence>
         <send>
            <endpoint key="endpoint_0"/>
         </send>
         <log level="full" xmlns="http://ws.apache.org/ns/synapse"/>
      </inSequence>
      <outSequence>
         <send/>
      </outSequence>
   </resource>
</api>

<?xml version="1.0" encoding="UTF-8"?>
<endpoint xmlns="http://ws.apache.org/ns/synapse"; name="endpoint_0">
   <loadbalance algorithm="org.apache.synapse.endpoints.algorithms.RoundRobin">
      <endpoint name="endpoint_0_0">
         <http method="post"
               uri-template="http://10.100.5.59:9773/services/HelloService/"/>
         <property name="ENDPOINT_ADDRESS"
                   value="http://10.100.5.59:9773/services/HelloService/"/>
      </endpoint>
      <endpoint name="endpoint_0_1">
         <http method="post"
               uri-template="http://10.100.5.59:9774/services/HelloService/"/>
         <property name="ENDPOINT_ADDRESS"
                   value="http://10.100.5.59:9774/services/HelloService/"/>
      </endpoint>
      <endpoint name="endpoint_0_2">
         <http method="post"
               uri-template="http://10.100.5.59:9775/services/HelloService/"/>
         <property name="ENDPOINT_ADDRESS"
                   value="http://10.100.5.59:9775/services/HelloService/"/>
      </endpoint>
   </loadbalance>
</endpoint>

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