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package eu.dnetlib.data.hadoop.oozie;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.oozie.client.OozieClient;
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import org.springframework.beans.factory.annotation.Autowired;
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import eu.dnetlib.data.hadoop.config.ClusterName;
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import eu.dnetlib.data.hadoop.config.ConfigurationEnumerator;
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/**
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* Factory bean for Oozie client instances.
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*
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* oozie server may not be available in every hadoop deployment, so every oozie specific operation should be defined as optional.
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*
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* @author claudio
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*
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*/
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public class OozieClientFactory {
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private static final String ENV_ATTRIBUTE_OOZIE_SERVICE_LOC = "oozie.service.loc";
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private static final Log log = LogFactory.getLog(OozieClientFactory.class); // NOPMD by marko on 11/24/08 5:02 PM
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@Autowired
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private ConfigurationEnumerator configurationEnumerator;
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public OozieClient newInstance(ClusterName clusterName) {
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final String oozieServiceLocation = configurationEnumerator.get(clusterName).get(ENV_ATTRIBUTE_OOZIE_SERVICE_LOC);
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log.info("init oozie client, cluster: " + clusterName.toString() + ", oozie server: " + oozieServiceLocation);
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try {
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return new OozieClient(oozieServiceLocation);
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} catch (Throwable e) {
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log.warn("unable to initialize oozie client for cluster: " + clusterName.toString(), e);
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return null;
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}
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}
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}
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