org.thingsboard.rule.engine.util.EntitiesFieldsAsyncLoader.java Source code

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Here is the source code for org.thingsboard.rule.engine.util.EntitiesFieldsAsyncLoader.java

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/**
 * Copyright  2016-2018 The Thingsboard Authors
 *
 * 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.thingsboard.rule.engine.util;

import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import org.thingsboard.rule.engine.api.TbContext;
import org.thingsboard.rule.engine.api.TbNodeException;
import org.thingsboard.server.common.data.BaseData;
import org.thingsboard.server.common.data.EntityFieldsData;
import org.thingsboard.server.common.data.alarm.AlarmId;
import org.thingsboard.server.common.data.id.AssetId;
import org.thingsboard.server.common.data.id.CustomerId;
import org.thingsboard.server.common.data.id.DeviceId;
import org.thingsboard.server.common.data.id.EntityId;
import org.thingsboard.server.common.data.id.RuleChainId;
import org.thingsboard.server.common.data.id.TenantId;
import org.thingsboard.server.common.data.id.UserId;

import java.util.function.Function;

public class EntitiesFieldsAsyncLoader {

    public static ListenableFuture<EntityFieldsData> findAsync(TbContext ctx, EntityId original) {
        switch (original.getEntityType()) {
        case TENANT:
            return getAsync(ctx.getTenantService().findTenantByIdAsync(ctx.getTenantId(), (TenantId) original),
                    EntityFieldsData::new);
        case CUSTOMER:
            return getAsync(
                    ctx.getCustomerService().findCustomerByIdAsync(ctx.getTenantId(), (CustomerId) original),
                    EntityFieldsData::new);
        case USER:
            return getAsync(ctx.getUserService().findUserByIdAsync(ctx.getTenantId(), (UserId) original),
                    EntityFieldsData::new);
        case ASSET:
            return getAsync(ctx.getAssetService().findAssetByIdAsync(ctx.getTenantId(), (AssetId) original),
                    EntityFieldsData::new);
        case DEVICE:
            return getAsync(ctx.getDeviceService().findDeviceByIdAsync(ctx.getTenantId(), (DeviceId) original),
                    EntityFieldsData::new);
        case ALARM:
            return getAsync(ctx.getAlarmService().findAlarmByIdAsync(ctx.getTenantId(), (AlarmId) original),
                    EntityFieldsData::new);
        case RULE_CHAIN:
            return getAsync(
                    ctx.getRuleChainService().findRuleChainByIdAsync(ctx.getTenantId(), (RuleChainId) original),
                    EntityFieldsData::new);
        default:
            return Futures.immediateFailedFuture(new TbNodeException("Unexpected original EntityType " + original));
        }
    }

    private static <T extends BaseData> ListenableFuture<EntityFieldsData> getAsync(ListenableFuture<T> future,
            Function<T, EntityFieldsData> converter) {
        return Futures.transformAsync(future, in -> in != null ? Futures.immediateFuture(converter.apply(in))
                : Futures.immediateFailedFuture(new RuntimeException("Entity not found!")));
    }
}