CODEWITHSUNDEEP
wso2wso2-api-manager
Simon Trimboy
Simon Trimboy

Reputation: 61

ERROR on API Manager 2.0.0 gateway worker on start-up

The following ERROR is logged on the gateway worker nodes on start-up.

2016-08-23 12:32:42,344 [-] [Timer-5] ERROR KeyTemplateRetriever Exception when retrieving throttling data from remote endpoint
Unexpected character (<) at position 0.
    at org.json.simple.parser.Yylex.yylex(Unknown Source)
    at org.json.simple.parser.JSONParser.nextToken(Unknown Source)
    at org.json.simple.parser.JSONParser.parse(Unknown Source)
    at org.json.simple.parser.JSONParser.parse(Unknown Source)
    at org.json.simple.parser.JSONParser.parse(Unknown Source)
    at org.wso2.carbon.apimgt.gateway.throttling.util.KeyTemplateRetriever.retrieveKeyTemplateData(KeyTemplateRetriever.java:100)
    at org.wso2.carbon.apimgt.gateway.throttling.util.KeyTemplateRetriever.loadKeyTemplatesFromWebService(KeyTemplateRetriever.java:111)
    at org.wso2.carbon.apimgt.gateway.throttling.util.KeyTemplateRetriever.run(KeyTemplateRetriever.java:54)
    at java.util.TimerThread.mainLoop(Timer.java:555)
    at java.util.TimerThread.run(Timer.java:505)

Despite the error the gateway worker nodes startup and the environment can be used to successfully invoke a sample API.

All the apim nodes, bar the traffic manager, however report these warnings

2016-08-22 16:40:56,652 [-] [Timer-5]  WARN KeyTemplateRetriever Failed retrieving throttling data from remote endpoint: Connection refused. Retrying after 15 seconds...
2016-08-22 16:40:56,653 [-] [Timer-4]  WARN BlockingConditionRetriever Failed retrieving Blocking Conditions from remote endpoint: Connection refused. Retrying after 15 seconds...

Environment:

Upvotes: 3

Views: 4110

Answers (2)

Supun Malinga
Supun Malinga

Reputation: 111

I encountered the issue recently and the issue was throttle#data#v1.war (repository/deployment/server/webapps/throttle#data#v1.war) hasn't been deployed at the time worker starts up. If you have a distributed AM 2.0 deployment make sure Keymanager is up and throttle#data#v1.war is deployed in keymanager before worker srartup..

Upvotes: 1

Bee
Bee

Reputation: 12502

If you disable Advanced Throttling in api-manager.xml like below, that error will go away. If you enable that, it requires a key manager node. 

<EnableAdvanceThrottling>false</EnableAdvanceThrottling>

Upvotes: 2

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