What will happen if the task is not matched with any of the rule mentioned in the configuration?
Thanks On Mon, Sep 29, 2014 at 5:37 AM, Anjana Fernando <[email protected]> wrote: > Hi, > > I've added $subject to the ntask component, to give more control onto > where scheduled tasks can be scheduled in a cluster. TaskLocationResolvers > are used in ntask to basically to find a location in the available set of > nodes, given the information about the environment. Earlier we had out of > the box task location resolvers like RandomTaskLocationResolver and > RoundRobinTaskLocationResolver. The new > "org.wso2.carbon.ntask.core.impl.RuleBasedLocationResolver" has the > following configuration to be used tasks-config.xml:- > > <defaultLocationResolver> > > <locationResolverClass>org.wso2.carbon.ntask.core.impl.RuleBasedLocationResolver</locationResolverClass> > <properties> > <property > name="rule-1">HIVE_TASK,HTTP_SCRIPT*,192.168.1.*</property> > <property name="rule-2">HIVE_TASK,.*,192.168.2.*</property> > <property name="rule-5">.*,.*,.*</property> > </properties> > </defaultLocationResolver> > > Basically, here, a rule section contains > [task-type-pattern],[task-name-pattern],[address-pattern], and a specific > task checked if its task type matches the task-type-pattern, then it's task > name to task-name-pattern and then it checks the available nodes' addresses > against address-pattern, and if it finds 1 or many, it selects on of those > addresses in a round robin manner. The property names denotes the sequence > the rules will be evaluated, i.e. rule-1 is checked before rule-2. > > With this task location resolver, we can implement scenarios such as > executing tasks in a specific zone at first, then only fail-over to another > zone, if the earlier one is not available. This code has been added to the > 4.2.0 branch and also to GitHub. > > Cheers, > Anjana. > -- > *Anjana Fernando* > Senior Technical Lead > WSO2 Inc. | http://wso2.com > lean . enterprise . middleware > > _______________________________________________ > Architecture mailing list > [email protected] > https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture > > -- Best Regards.. Chanika Geeganage Software Engineer WSO2, Inc.; http://wso2.com
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