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/**
 * Copyright 2017-2023 Open Text
 *
 * The only warranties for products and services of Open Text and
 * its affiliates and licensors (“Open Text”) are as may be set forth
 * in the express warranty statements accompanying such products and services.
 * Nothing herein should be construed as constituting an additional warranty.
 * Open Text shall not be liable for technical or editorial errors or
 * omissions contained herein. The information contained herein is subject
 * to change without notice.
 *
 * Except as specifically indicated otherwise, this document contains
 * confidential information and a valid license is required for possession,
 * use or copying. If this work is provided to the U.S. Government,
 * consistent with FAR 12.211 and 12.212, Commercial Computer Software,
 * Computer Software Documentation, and Technical Data for Commercial Items are
 * licensed to the U.S. Government under vendor's standard commercial license.
 *
 * 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 com.hp.octane.integrations.services.queueing;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.hp.octane.integrations.OctaneSDK;
import com.hp.octane.integrations.services.ClosableService;
import com.squareup.tape.ObjectQueue;

public interface QueueingService extends ClosableService {

	/**
	 * Service instance producer - for internal usage only (protected by inaccessible configurer)
	 *
	 * @param configurer SDK services configurer object
	 * @return initialized service
	 */
	static QueueingService newInstance(OctaneSDK.SDKServicesConfigurer configurer) {
		return new QueueingServiceImpl(configurer);
	}

	/**
	 * Checks if the persistence of the queues is enabled in this system (hosting plugin provided storage etc)
	 *
	 * @return boolean result
	 */
	boolean isPersistenceEnabled();

	/**
	 * Initializes memory based queue
	 *
	 * @param  type of an item of the queue
	 * @return initialized queue
	 */
	 ObjectQueue initMemoQueue();

	/**
	 * Initializes file based queue
	 * If the initialization fails for some reason, falls back to memory based queue and write log about this
	 *
	 * @param queueFileName file name to store the queue items in; service will attempt to create the file in the allowed storage folder
	 * @param targetType    type of an item of the queue in explicit way (for initialization needs)
	 * @param            type of an item of the queue
	 * @return initialized queue
	 */
	 ObjectQueue initFileQueue(String queueFileName, Class targetType);

	@JsonAutoDetect(fieldVisibility = JsonAutoDetect.Visibility.ANY)
	@JsonIgnoreProperties(ignoreUnknown = true)
	interface QueueItem {
	}
}




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