forked from community/device-mgt-core
Added Device-Cache for caching device objects which resolves harshanl/product-iots#1005
Harshan Liyanage
8 years ago
parent
951cd7b001
commit
43ba1e1b43
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/*
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* Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
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*
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* WSO2 Inc. licenses this file to you under the Apache License,
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* Version 2.0 (the "License"); you may not use this file except
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* in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.wso2.carbon.device.mgt.core.cache;
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import java.util.Objects;
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/**
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* This represents a Key object used in DeviceCache.
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*/
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public class DeviceCacheKey {
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private String deviceId;
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private String deviceType;
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private int tenantId;
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private volatile int hashCode;
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public String getDeviceId() {
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return deviceId;
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}
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public void setDeviceId(String deviceId) {
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this.deviceId = deviceId;
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}
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public String getDeviceType() {
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return deviceType;
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}
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public void setDeviceType(String deviceType) {
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this.deviceType = deviceType;
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}
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public int getTenantId() {
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return tenantId;
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}
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public void setTenantId(int tenantId) {
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this.tenantId = tenantId;
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}
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@Override
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public boolean equals(Object obj) {
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if (obj == null) {
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return false;
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}
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if (!DeviceCacheKey.class.isAssignableFrom(obj.getClass())) {
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return false;
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}
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final DeviceCacheKey other = (DeviceCacheKey) obj;
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String thisId = this.deviceId + "-" + this.deviceType + "_" + this.tenantId;
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String otherId = other.deviceId + "-" + other.deviceType + "_" + other.tenantId;
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if (!thisId.equals(otherId)) {
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return false;
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}
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return true;
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}
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@Override
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public int hashCode() {
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if (hashCode == 0) {
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hashCode = Objects.hash(deviceId, deviceType, tenantId);
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}
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return hashCode;
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}
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}
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@ -0,0 +1,37 @@
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/*
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* Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
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*
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* WSO2 Inc. licenses this file to you under the Apache License,
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* Version 2.0 (the "License"); you may not use this file except
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* in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.wso2.carbon.device.mgt.core.cache;
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import org.wso2.carbon.device.mgt.common.DeviceIdentifier;
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import org.wso2.carbon.device.mgt.common.Device;
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import java.util.List;
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/**
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* This defines the contract to be implemented by DeviceCacheManager which holds the necessary functionalities to
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* manage a cache of Device objects.
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*/
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public interface DeviceCacheManager {
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void addDeviceToCache(DeviceIdentifier deviceIdentifier, Device device, int tenantId);
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void removeDeviceFromCache(DeviceIdentifier identifier, int tenantId);
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void removeDevicesFromCache(List<DeviceIdentifier> deviceList, int tenantId);
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void updateDeviceInCache(DeviceIdentifier deviceIdentifier, Device device, int tenantId);
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Device getDeviceFromCache(DeviceIdentifier deviceIdentifier, int tenantId);
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}
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@ -0,0 +1,109 @@
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/*
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* Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
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*
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* WSO2 Inc. licenses this file to you under the Apache License,
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* Version 2.0 (the "License"); you may not use this file except
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* in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.wso2.carbon.device.mgt.core.cache.impl;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.wso2.carbon.device.mgt.common.Device;
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import org.wso2.carbon.device.mgt.common.DeviceIdentifier;
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import org.wso2.carbon.device.mgt.core.cache.DeviceCacheKey;
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import org.wso2.carbon.device.mgt.core.cache.DeviceCacheManager;
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import org.wso2.carbon.device.mgt.core.util.DeviceManagerUtil;
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import javax.cache.Cache;
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import java.util.List;
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/**
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* Implementation of DeviceCacheManager.
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*/
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public class DeviceCacheManagerImpl implements DeviceCacheManager {
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private static final Log log = LogFactory.getLog(DeviceCacheManagerImpl.class);
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private static DeviceCacheManagerImpl deviceCacheManager;
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private DeviceCacheManagerImpl() {
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}
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public static DeviceCacheManagerImpl getInstance() {
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if (deviceCacheManager == null) {
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synchronized (DeviceCacheManagerImpl.class) {
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if (deviceCacheManager == null) {
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deviceCacheManager = new DeviceCacheManagerImpl();
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}
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}
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}
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return deviceCacheManager;
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}
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@Override
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public void addDeviceToCache(DeviceIdentifier deviceIdentifier, Device device, int tenantId) {
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Cache<DeviceCacheKey, Device> lCache = DeviceManagerUtil.getDeviceCache();
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DeviceCacheKey cacheKey = getCacheKey(deviceIdentifier, tenantId);
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if (lCache.containsKey(cacheKey)) {
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this.updateDeviceInCache(deviceIdentifier, device, tenantId);
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} else {
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lCache.put(cacheKey, device);
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}
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}
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@Override
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public void removeDeviceFromCache(DeviceIdentifier deviceIdentifier, int tenantId) {
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Cache<DeviceCacheKey, Device> lCache = DeviceManagerUtil.getDeviceCache();
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DeviceCacheKey cacheKey = getCacheKey(deviceIdentifier, tenantId);
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if (lCache.containsKey(cacheKey)) {
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lCache.remove(cacheKey);
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}
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}
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@Override
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public void removeDevicesFromCache(List<DeviceIdentifier> deviceList, int tenantId) {
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Cache<DeviceCacheKey, Device> lCache = DeviceManagerUtil.getDeviceCache();
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for (DeviceIdentifier deviceIdentifier : deviceList) {
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DeviceCacheKey cacheKey = getCacheKey(deviceIdentifier, tenantId);
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if (lCache.containsKey(cacheKey)) {
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lCache.remove(cacheKey);
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}
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}
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}
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@Override
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public void updateDeviceInCache(DeviceIdentifier deviceIdentifier, Device device, int tenantId) {
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Cache<DeviceCacheKey, Device> lCache = DeviceManagerUtil.getDeviceCache();
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DeviceCacheKey cacheKey = getCacheKey(deviceIdentifier, tenantId);
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if (lCache.containsKey(cacheKey)) {
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lCache.replace(cacheKey, device);
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}
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}
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@Override
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public Device getDeviceFromCache(DeviceIdentifier deviceIdentifier, int tenantId) {
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Cache<DeviceCacheKey, Device> lCache = DeviceManagerUtil.getDeviceCache();
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return lCache.get(getCacheKey(deviceIdentifier, tenantId));
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}
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private DeviceCacheKey getCacheKey(DeviceIdentifier deviceIdentifier, int tenantId) {
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DeviceCacheKey deviceCacheKey = new DeviceCacheKey();
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deviceCacheKey.setDeviceId(deviceIdentifier.getId());
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deviceCacheKey.setDeviceType(deviceIdentifier.getType());
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deviceCacheKey.setTenantId(tenantId);
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return deviceCacheKey;
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}
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}
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@ -0,0 +1,47 @@
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/*
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* Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
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*
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* WSO2 Inc. licenses this file to you under the Apache License,
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* Version 2.0 (the "License"); you may not use this file except
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* in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.wso2.carbon.device.mgt.core.config.cache;
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import javax.xml.bind.annotation.XmlElement;
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import javax.xml.bind.annotation.XmlRootElement;
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@XmlRootElement(name = "DeviceCacheConfiguration")
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public class DeviceCacheConfiguration {
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private boolean isEnabled;
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private int expiryTime;
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@XmlElement(name = "Enable", required = true)
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public boolean isEnabled() {
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return isEnabled;
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}
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public void setEnabled(boolean enabled) {
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isEnabled = enabled;
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}
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@XmlElement(name = "ExpiryTime", required = true)
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public int getExpiryTime() {
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return expiryTime;
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}
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public void setExpiryTime(int expiryTime) {
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this.expiryTime = expiryTime;
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}
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}
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