| /* |
| * Copyright 2014 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.dhcp; |
| |
| import com.google.common.base.MoreObjects; |
| import org.onlab.packet.Ip4Address; |
| |
| import java.util.Date; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| /** |
| * Stores the MAC ID to IP Address mapping details. |
| */ |
| public final class IpAssignment { |
| |
| private final Ip4Address ipAddress; |
| |
| private final Date timestamp; |
| |
| private final long leasePeriod; |
| |
| private final AssignmentStatus assignmentStatus; |
| |
| public enum AssignmentStatus { |
| /** |
| * IP has been requested by a host, but not assigned to it yet. |
| */ |
| Option_Requested, |
| |
| /** |
| * IP has been assigned to a host. |
| */ |
| Option_Assigned, |
| |
| /** |
| * IP mapping is no longer active. |
| */ |
| Option_Expired |
| } |
| |
| /** |
| * Constructor for IPAssignment, where the ipAddress, the lease period, the timestamp |
| * and assignment status is supplied. |
| * |
| * @param ipAddress |
| * @param leasePeriod |
| * @param assignmentStatus |
| */ |
| private IpAssignment(Ip4Address ipAddress, |
| long leasePeriod, |
| Date timestamp, |
| AssignmentStatus assignmentStatus) { |
| this.ipAddress = ipAddress; |
| this.leasePeriod = leasePeriod; |
| this.timestamp = timestamp; |
| this.assignmentStatus = assignmentStatus; |
| } |
| |
| /** |
| * Returns the IP Address of the IP assignment. |
| * |
| * @return the IP address |
| */ |
| public Ip4Address ipAddress() { |
| return this.ipAddress; |
| } |
| |
| /** |
| * Returns the timestamp of the IP assignment. |
| * |
| * @return the timestamp |
| */ |
| public Date timestamp() { |
| return this.timestamp; |
| } |
| |
| /** |
| * Returns the assignment status of the IP assignment. |
| * |
| * @return the assignment status |
| */ |
| public AssignmentStatus assignmentStatus() { |
| return this.assignmentStatus; |
| } |
| |
| /** |
| * Returns the lease period of the IP assignment. |
| * |
| * @return the lease period in seconds |
| */ |
| public int leasePeriod() { |
| return (int) this.leasePeriod; |
| } |
| |
| /** |
| * Returns the lease period of the IP assignment. |
| * |
| * @return the lease period in milliseconds |
| */ |
| public int leasePeriodMs() { |
| return (int) this.leasePeriod * 1000; |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .add("ip", ipAddress) |
| .add("timestamp", timestamp) |
| .add("lease", leasePeriod) |
| .add("assignmentStatus", assignmentStatus) |
| .toString(); |
| } |
| |
| /** |
| * Creates and returns a new builder instance. |
| * |
| * @return new builder |
| */ |
| public static Builder builder() { |
| return new Builder(); |
| } |
| |
| /** |
| * Creates and returns a new builder instance that clones an existing IPAssignment. |
| * |
| * @param assignment ip address assignment |
| * @return new builder |
| */ |
| public static Builder builder(IpAssignment assignment) { |
| return new Builder(assignment); |
| } |
| |
| /** |
| * IPAssignment Builder. |
| */ |
| public static final class Builder { |
| |
| private Ip4Address ipAddress; |
| |
| private Date timeStamp; |
| |
| private long leasePeriod; |
| |
| private AssignmentStatus assignmentStatus; |
| |
| private Builder() { |
| |
| } |
| |
| private Builder(IpAssignment ipAssignment) { |
| ipAddress = ipAssignment.ipAddress(); |
| timeStamp = ipAssignment.timestamp(); |
| leasePeriod = ipAssignment.leasePeriod(); |
| assignmentStatus = ipAssignment.assignmentStatus(); |
| } |
| |
| public IpAssignment build() { |
| validateInputs(); |
| return new IpAssignment(ipAddress, |
| leasePeriod, |
| timeStamp, |
| assignmentStatus); |
| } |
| |
| public Builder ipAddress(Ip4Address addr) { |
| ipAddress = addr; |
| return this; |
| } |
| |
| public Builder timestamp(Date timestamp) { |
| timeStamp = timestamp; |
| return this; |
| } |
| |
| public Builder leasePeriod(int leasePeriodinSeconds) { |
| leasePeriod = leasePeriodinSeconds; |
| return this; |
| } |
| |
| public Builder assignmentStatus(AssignmentStatus status) { |
| assignmentStatus = status; |
| return this; |
| } |
| |
| private void validateInputs() { |
| checkNotNull(ipAddress, "IP Address must be specified"); |
| checkNotNull(assignmentStatus, "Assignment Status must be specified"); |
| checkNotNull(leasePeriod, "Lease Period must be specified"); |
| checkNotNull(timeStamp, "Timestamp must be specified"); |
| |
| switch (assignmentStatus) { |
| case Option_Requested: |
| case Option_Assigned: |
| case Option_Expired: |
| break; |
| default: |
| throw new IllegalStateException("Unknown assignment status"); |
| } |
| } |
| } |
| } |