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/*
* Copyright 2015 Open Networking Laboratory
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onosproject.incubator.net.resource.label;
import static com.google.common.base.Preconditions.checkArgument;
import java.util.Collections;
import java.util.Objects;
import java.util.Set;
import com.google.common.annotations.Beta;
import org.onosproject.net.DeviceId;
import com.google.common.base.MoreObjects;
import com.google.common.collect.ImmutableSet;
/**
* Abstraction of the capacity of device label resource or global label
* resource. It's contiguous range of label resource. When a application apply
* some labels of some device, first catch from Set that store
* available labels, if the size of the Set less than the apply number, then get
* labels by calculating with three attributes, beginLabel,endLabel and
* currentUsedMaxLabelId.
*/
@Beta
public class LabelResourcePool {
private final DeviceId deviceId;
private final LabelResourceId beginLabel;
private final LabelResourceId endLabel;
private final long totalNum; // capacity of label resource pool
private final long usedNum; // have used label number
private final LabelResourceId currentUsedMaxLabelId; // the maximal label
// number id
private ImmutableSet<LabelResource> releaseLabelId; // Set of released label
/**
* Creates a pool by device id,begin label id,end label id.
*
* @param deviceId device identifier
* @param beginLabel represents for the first label id in the range of label
* resource pool
* @param endLabel represents for the last label id in the range of label
* resource pool
*/
public LabelResourcePool(String deviceId, long beginLabel, long endLabel) {
this(deviceId, beginLabel, endLabel, endLabel - beginLabel + 1, 0L,
beginLabel, ImmutableSet.copyOf(Collections.emptySet()));
}
/**
* Creates a pool by device id,begin label id,end label id.
* Used to update a pool in the store.
*
* @param deviceId device identifier
* @param beginLabel represents for the first label id in the range of label
* resource pool
* @param endLabel represents for the last label id in the range of label
* resource pool
* @param totalNum capacity of label resource pool
* @param usedNum have used label number
* @param currentUsedMaxLabelId the maximal label number id
* @param releaseLabelId Set of released label
*/
public LabelResourcePool(String deviceId, long beginLabel, long endLabel,
long totalNum, long usedNum,
long currentUsedMaxLabelId,
ImmutableSet<LabelResource> releaseLabelId) {
checkArgument(endLabel >= beginLabel,
"endLabel %s must be greater than or equal to beginLabel %s",
endLabel, beginLabel);
this.deviceId = DeviceId.deviceId(deviceId);
this.beginLabel = LabelResourceId.labelResourceId(beginLabel);
this.endLabel = LabelResourceId.labelResourceId(endLabel);
this.totalNum = totalNum;
this.usedNum = usedNum;
this.currentUsedMaxLabelId = LabelResourceId
.labelResourceId(currentUsedMaxLabelId);
this.releaseLabelId = releaseLabelId;
}
/**
* Returns a device id.
*
* @return DeviceId
*/
public DeviceId deviceId() {
return deviceId;
}
/**
* Returns a begin Label id.
*
* @return begin Label id
*/
public LabelResourceId beginLabel() {
return beginLabel;
}
/**
* Returns an end Label id.
*
* @return end Label id
*/
public LabelResourceId endLabel() {
return endLabel;
}
/**
* Returns a begin Label id.
*
* @return current Used Maximal Label Id
*/
public LabelResourceId currentUsedMaxLabelId() {
return currentUsedMaxLabelId;
}
/**
* Returns total number.
*
* @return the total label number
*/
public long totalNum() {
return totalNum;
}
/**
* Returns used number.
*
* @return the used label number
*/
public long usedNum() {
return usedNum;
}
/**
* Returns the Set of released label before.
*
* @return the Set of LabelResource
*/
public Set<LabelResource> releaseLabelId() {
return releaseLabelId;
}
@Override
public int hashCode() {
return Objects.hash(this.deviceId, this.beginLabel, this.endLabel,
this.totalNum, this.usedNum,
this.currentUsedMaxLabelId, this.releaseLabelId);
}
@Override
public boolean equals(Object obj) {
if (obj instanceof LabelResourcePool) {
LabelResourcePool that = (LabelResourcePool) obj;
return Objects.equals(this.deviceId, that.deviceId)
&& Objects.equals(this.beginLabel, that.beginLabel)
&& Objects.equals(this.endLabel, that.endLabel)
&& Objects.equals(this.totalNum, that.totalNum)
&& Objects.equals(this.usedNum, that.usedNum)
&& Objects.equals(this.currentUsedMaxLabelId,
that.currentUsedMaxLabelId)
&& Objects.equals(this.releaseLabelId, that.releaseLabelId);
}
return false;
}
@Override
public String toString() {
// TODO Auto-generated method stub
return MoreObjects.toStringHelper(this).add("deviceId", this.deviceId)
.add("beginLabel", this.beginLabel)
.add("endLabel", this.endLabel).add("totalNum", this.totalNum)
.add("usedNum", this.usedNum)
.add("currentUsedMaxLabelId", this.currentUsedMaxLabelId)
.add("releaseLabelId", this.releaseLabelId).toString();
}
}
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