package eu.scape_project.planning.plato.bean;
import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import javax.enterprise.context.Dependent;
import javax.inject.Inject;
import org.slf4j.Logger;
import eu.scape_project.planning.services.IServiceInfo;
import eu.scape_project.planning.services.myexperiment.MyExperimentAsyncLoader;
import eu.scape_project.planning.services.myexperiment.domain.WorkflowDescription;
import eu.scape_project.planning.utils.FacesMessages;
/**
* MyExperiment service cache for loading details.
*/
@Dependent
public class MyExperimentServices implements Serializable, IServiceLoader {
private static final long serialVersionUID = -65374305723742598L;
@Inject
private Logger log;
@Inject
private FacesMessages facesMessages;
@Inject
private MyExperimentAsyncLoader loader;
private Map<String, Future<WorkflowDescription>> workflowDescriptions = new HashMap<String, Future<WorkflowDescription>>();
@Override
public void load(IServiceInfo serviceInfo) {
if (!workflowDescriptions.containsKey(serviceInfo.getDescriptor())) {
log.debug("Loading service [{}]", serviceInfo.getUrl());
workflowDescriptions.put(serviceInfo.getDescriptor(),
loader.loadWorkflowDescription(serviceInfo.getDescriptor()));
}
}
/**
* Checks if the details for the provided service info is ready.
*
* @param serviceInfo
* the service to check
* @return true if the details are ready, false otherwise
*/
public boolean isWorkflowDescriptionReady(IServiceInfo serviceInfo) {
Future<WorkflowDescription> futureWorkflowDescription = workflowDescriptions.get(serviceInfo.getDescriptor());
if (futureWorkflowDescription == null) {
return false;
}
return futureWorkflowDescription.isDone();
}
/**
* Returns the service details if ready.
*
* Returns null if the serviceInfo is null, was not requested for load or is
* not ready yet.
*
* @param serviceInfo
* the service to get
* @return details of the service or null
*/
public WorkflowDescription getWorkflowDescription(IServiceInfo serviceInfo) {
if (serviceInfo == null) {
return null;
}
Future<WorkflowDescription> futureWorkflowDescription = workflowDescriptions.get(serviceInfo.getDescriptor());
if (futureWorkflowDescription == null) {
load(serviceInfo);
futureWorkflowDescription = workflowDescriptions.get(serviceInfo.getDescriptor());
}
try {
WorkflowDescription wf = futureWorkflowDescription.get();
if (wf == null) {
log.debug("Service [{}] not found.", serviceInfo.getUrl());
facesMessages.addWarning("Service " + serviceInfo.getUrl() + " not found.");
}
return wf;
} catch (InterruptedException e) {
log.warn("Loading of service [{}] interrupted.", serviceInfo.getUrl(), e);
facesMessages.addWarning("Loading of service details interrupted");
} catch (ExecutionException e) {
log.warn("Loading of service [{}] failed.", serviceInfo.getUrl(), e);
facesMessages.addWarning("Loading of details service " + serviceInfo.getUrl() + " failed");
}
return null;
}
/**
* Clears the service detail cache.
*/
public void clear() {
workflowDescriptions.clear();
}
}