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package eu.dnetlib.msro.workflows.nodes.blackboard;
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import java.util.Map;
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import java.util.Map.Entry;
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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 com.googlecode.sarasvati.Arc;
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import com.googlecode.sarasvati.Engine;
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import com.googlecode.sarasvati.NodeToken;
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import com.googlecode.sarasvati.env.Env;
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import eu.dnetlib.enabling.tools.blackboard.AbstractBlackboardJobListener;
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import eu.dnetlib.enabling.tools.blackboard.BlackboardJob;
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import eu.dnetlib.msro.workflows.util.WorkflowsConstants;
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public class BlackboardWorkflowJobListener extends AbstractBlackboardJobListener {
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/**
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* logger.
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*/
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private static final Log log = LogFactory.getLog(BlackboardWorkflowJobListener.class);
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/**
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* workflow engine.
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*/
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private Engine engine;
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/**
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* workflow node token.
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*/
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private NodeToken token;
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@Override
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protected void onDone(final BlackboardJob job) {
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log.debug("Blackboard workflow node DONE");
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complete(job, Arc.DEFAULT_ARC);
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}
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public BlackboardWorkflowJobListener(final Engine engine, final NodeToken token) {
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super();
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this.engine = engine;
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this.token = token;
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}
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@Override
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final public void processJob(final BlackboardJob job) {
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token.getEnv().setTransientAttribute(WorkflowsConstants.BLACKBOARD_JOB, job);
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super.processJob(job);
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}
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@Override
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protected void onFailed(final BlackboardJob job) {
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log.warn("Blackboard workflow node FAILED: " + job.getError());
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token.getEnv().setAttribute(WorkflowsConstants.SYSTEM_HAS_FAILED, true);
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token.getEnv().setAttribute(WorkflowsConstants.SYSTEM_ERROR, job.getError());
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complete(job, "failed");
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}
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final protected void complete(final BlackboardJob job, final String arc) {
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final Env env = token.getEnv();
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populateEnv(env, job.getParameters());
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engine.complete(token, arc);
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engine.executeQueuedArcTokens(token.getProcess());
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}
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protected void populateEnv(final Env env, Map<String, String> responseParams) {
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for (Entry<String, String> entry : responseParams.entrySet()) {
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env.setAttribute(WorkflowsConstants.BLACKBOARD_PARAM_PREFIX + entry.getKey(), entry.getValue());
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}
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}
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@Override
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protected void onOngoing(final BlackboardJob job) {
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token.getEnv().setAttribute(WorkflowsConstants.BLACKBOARD_IS_GOING, true);
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}
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public Engine getEngine() {
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return engine;
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}
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public void setEngine(final Engine engine) {
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this.engine = engine;
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}
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public NodeToken getToken() {
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return token;
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}
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public void setToken(final NodeToken token) {
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this.token = token;
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}
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}
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