import org.onosproject.incubator.net.resource.label.LabelResourcePool; //导入方法依赖的package包/类

private boolean internalRelease(LabelResourceRequest request) {

DeviceId deviceId = request.deviceId();

Collection release = request.releaseCollection();

Versioned poolOld = resourcePool.get(deviceId);

if (poolOld == null) {

log.info("the label resource pool of device id {} not allocated");

return false;

}

LabelResourcePool pool = poolOld.value();

if (pool == null) {

log.info("the label resource pool of device id {} does not exist");

return false;

}

Set storeSet = new HashSet<>(pool.releaseLabelId());

LabelResource labelResource = null;

long realReleasedNum = 0;

for (Iterator it = release.iterator(); it.hasNext();) {

labelResource = it.next();

if (labelResource.labelResourceId().labelId() < pool.beginLabel()

.labelId()

|| labelResource.labelResourceId().labelId() > pool

.endLabel().labelId()) {

continue;

}

if (pool.currentUsedMaxLabelId().labelId() > labelResource

.labelResourceId().labelId()

|| !storeSet.contains(labelResource)) {

storeSet.add(labelResource);

realReleasedNum++;

}

}

long beginNum = pool.beginLabel().labelId();

long endNum = pool.endLabel().labelId();

long totalNum = pool.totalNum();

long usedNum = pool.usedNum() - realReleasedNum;

long current = pool.currentUsedMaxLabelId().labelId();

ImmutableSet s = ImmutableSet.copyOf(storeSet);

LabelResourcePool newPool = new LabelResourcePool(deviceId.toString(),

beginNum, endNum,

totalNum, usedNum,

current, s);

resourcePool.put(deviceId, newPool);

log.info("success to release label resource");

return true;

}