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package org.onosproject.incubator.net.resource.label.impl;
import com.google.common.collect.Multimap;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.apache.felix.scr.annotations.Service;
import org.onosproject.net.provider.AbstractListenerProviderRegistry;
import org.onosproject.incubator.net.resource.label.LabelResource;
import org.onosproject.incubator.net.resource.label.LabelResourceAdminService;
import org.onosproject.incubator.net.resource.label.LabelResourceDelegate;
import org.onosproject.incubator.net.resource.label.LabelResourceEvent;
import org.onosproject.incubator.net.resource.label.LabelResourceId;
import org.onosproject.incubator.net.resource.label.LabelResourceListener;
import org.onosproject.incubator.net.resource.label.LabelResourcePool;
import org.onosproject.incubator.net.resource.label.LabelResourceProvider;
import org.onosproject.incubator.net.resource.label.LabelResourceProviderRegistry;
import org.onosproject.incubator.net.resource.label.LabelResourceProviderService;
import org.onosproject.incubator.net.resource.label.LabelResourceService;
import org.onosproject.incubator.net.resource.label.LabelResourceStore;
import org.onosproject.net.Device;
import org.onosproject.net.DeviceId;
import org.onosproject.net.device.DeviceEvent;
import org.onosproject.net.device.DeviceEvent.Type;
import org.onosproject.net.device.DeviceListener;
import org.onosproject.net.device.DeviceService;
import org.onosproject.net.provider.AbstractProviderService;
import org.slf4j.Logger;
import java.util.Collection;
import java.util.Set;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import static org.slf4j.LoggerFactory.getLogger;
/**
* provides implementation of the label resource NB & SB APIs.
*
*/
@Component(immediate = true)
@Service
public class LabelResourceManager
extends AbstractListenerProviderRegistry<LabelResourceEvent, LabelResourceListener,
LabelResourceProvider, LabelResourceProviderService>
implements LabelResourceService, LabelResourceAdminService, LabelResourceProviderRegistry {
private final Logger log = getLogger(getClass());
private final LabelResourceDelegate delegate = new InternalLabelResourceDelegate();
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected LabelResourceStore store;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected DeviceService deviceService;
private DeviceListener deviceListener = new InternalDeviceListener();
@Activate
public void activate() {
store.setDelegate(delegate);
eventDispatcher.addSink(LabelResourceEvent.class, listenerRegistry);
deviceService.addListener(deviceListener);
log.info("Started");
}
@Deactivate
public void deactivate() {
deviceService.removeListener(deviceListener);
store.unsetDelegate(delegate);
eventDispatcher.removeSink(LabelResourceEvent.class);
log.info("Stopped");
}
@Override
public boolean createDevicePool(DeviceId deviceId,
LabelResourceId beginLabel,
LabelResourceId endLabel) {
checkNotNull(deviceId, "deviceId is not null");
checkNotNull(beginLabel, "beginLabel is not null");
checkNotNull(endLabel, "endLabel is not null");
checkArgument(beginLabel.labelId() >= 0 || endLabel.labelId() >= 0,
"The value of beginLabel and the value of endLabel must be both positive number.");
checkArgument(beginLabel.labelId() < endLabel.labelId(),
"The value of endLabel must be greater than the value of beginLabel.");
return store.createDevicePool(deviceId, beginLabel, endLabel);
}
@Override
public boolean createGlobalPool(LabelResourceId beginLabel,
LabelResourceId endLabel) {
checkNotNull(beginLabel, "beginLabel is not null");
checkNotNull(endLabel, "endLabel is not null");
checkArgument(beginLabel.labelId() >= 0 && endLabel.labelId() >= 0,
"The value of beginLabel and the value of endLabel must be both positive number.");
checkArgument(beginLabel.labelId() < endLabel.labelId(),
"The value of endLabel must be greater than the value of beginLabel.");
return store.createGlobalPool(beginLabel, endLabel);
}
@Override
public boolean destroyDevicePool(DeviceId deviceId) {
checkNotNull(deviceId, "deviceId is not null");
return store.destroyDevicePool(deviceId);
}
@Override
public boolean destroyGlobalPool() {
return store.destroyGlobalPool();
}
@Override
public Collection<LabelResource> applyFromDevicePool(DeviceId deviceId,
long applyNum) {
checkNotNull(deviceId, "deviceId is not null");
checkNotNull(applyNum, "applyNum is not null");
return store.applyFromDevicePool(deviceId, applyNum);
}
@Override
public Collection<LabelResource> applyFromGlobalPool(long applyNum) {
checkNotNull(applyNum, "applyNum is not null");
return store.applyFromGlobalPool(applyNum);
}
@Override
public boolean releaseToDevicePool(Multimap<DeviceId, LabelResource> release) {
checkNotNull(release, "release is not null");
return store.releaseToDevicePool(release);
}
@Override
public boolean releaseToGlobalPool(Set<LabelResourceId> release) {
checkNotNull(release, "release is not null");
return store.releaseToGlobalPool(release);
}
@Override
public boolean isDevicePoolFull(DeviceId deviceId) {
checkNotNull(deviceId, "deviceId is not null");
return store.isDevicePoolFull(deviceId);
}
@Override
public boolean isGlobalPoolFull() {
return store.isGlobalPoolFull();
}
@Override
public long getFreeNumOfDevicePool(DeviceId deviceId) {
checkNotNull(deviceId, "deviceId is not null");
return store.getFreeNumOfDevicePool(deviceId);
}
@Override
public long getFreeNumOfGlobalPool() {
return store.getFreeNumOfGlobalPool();
}
@Override
public LabelResourcePool getDeviceLabelResourcePool(DeviceId deviceId) {
checkNotNull(deviceId, "deviceId is not null");
return store.getDeviceLabelResourcePool(deviceId);
}
@Override
public LabelResourcePool getGlobalLabelResourcePool() {
return store.getGlobalLabelResourcePool();
}
private class InternalLabelResourceDelegate implements LabelResourceDelegate {
@Override
public void notify(LabelResourceEvent event) {
post(event);
}
}
private class InternalDeviceListener implements DeviceListener {
@Override
public void event(DeviceEvent event) {
Device device = event.subject();
if (Type.DEVICE_REMOVED.equals(event.type())) {
destroyDevicePool(device.id());
}
}
}
private class InternalLabelResourceProviderService
extends AbstractProviderService<LabelResourceProvider>
implements LabelResourceProviderService {
protected InternalLabelResourceProviderService(LabelResourceProvider provider) {
super(provider);
}
@Override
public void deviceLabelResourcePoolDetected(DeviceId deviceId,
LabelResourceId beginLabel,
LabelResourceId endLabel) {
checkNotNull(deviceId, "deviceId is not null");
checkNotNull(beginLabel, "beginLabel is not null");
checkNotNull(endLabel, "endLabel is not null");
createDevicePool(deviceId, beginLabel, endLabel);
}
@Override
public void deviceLabelResourcePoolDestroyed(DeviceId deviceId) {
checkNotNull(deviceId, "deviceId is not null");
destroyDevicePool(deviceId);
}
}
@Override
protected LabelResourceProviderService createProviderService(LabelResourceProvider provider) {
return new InternalLabelResourceProviderService(provider);
}
}
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