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Fixes eclipse-lemminx#1162 Signed-off-by: azerr <azerr@redhat.com>
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org.eclipse.lemminx/src/main/java/org/eclipse/lemminx/commons/ModelValidatorDelayer.java
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| /******************************************************************************* | ||
| * Copyright (c) 2022 Red Hat Inc. and others. | ||
| * All rights reserved. This program and the accompanying materials | ||
| * which accompanies this distribution, and is available at | ||
| * http://www.eclipse.org/legal/epl-v20.html | ||
| * | ||
| * SPDX-License-Identifier: EPL-2.0 | ||
| * | ||
| * Contributors: | ||
| * Red Hat Inc. - initial API and implementation | ||
| *******************************************************************************/ | ||
| package org.eclipse.lemminx.commons; | ||
|
|
||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.concurrent.Executors; | ||
| import java.util.concurrent.Future; | ||
| import java.util.concurrent.ScheduledExecutorService; | ||
| import java.util.concurrent.TimeUnit; | ||
| import java.util.function.Consumer; | ||
|
|
||
| /** | ||
| * Validate a given model document with delay. | ||
| * | ||
| * @author Angelo ZERR | ||
| * | ||
| * @param <T> | ||
| */ | ||
| public class ModelValidatorDelayer<T> { | ||
|
|
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| private static final long DEFAULT_VALIDATION_DELAY_MS = 200; | ||
|
|
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| private final ScheduledExecutorService executorService; | ||
|
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| private final Consumer<T> validator; | ||
|
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| private final Map<String, Future<?>> pendingValidationRequests; | ||
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| private final long validationDelayMs; | ||
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| public ModelValidatorDelayer(Consumer<T> validator) { | ||
| this(Executors.newScheduledThreadPool(2), validator, DEFAULT_VALIDATION_DELAY_MS); | ||
| } | ||
|
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| public ModelValidatorDelayer(ScheduledExecutorService executorService, Consumer<T> validator, | ||
| long validationDelayMs) { | ||
| this.executorService = executorService; | ||
| this.validator = validator; | ||
| this.pendingValidationRequests = new HashMap<>(); | ||
| this.validationDelayMs = validationDelayMs; | ||
| } | ||
|
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| /** | ||
| * Validate the given model <code>document</code> identified by the given | ||
| * <code>uri</code> with a delay. | ||
| * | ||
| * @param uri the document URI. | ||
| * @param document the document model to validate. | ||
| */ | ||
| public void validateWithDelay(String uri, T document) { | ||
| cleanPendingValidation(uri); | ||
| Future<?> request = executorService.schedule(() -> { | ||
| synchronized (pendingValidationRequests) { | ||
| pendingValidationRequests.remove(uri); | ||
| } | ||
| validator.accept(document); | ||
| }, validationDelayMs, TimeUnit.MILLISECONDS); | ||
| synchronized (pendingValidationRequests) { | ||
| pendingValidationRequests.put(uri, request); | ||
| } | ||
| } | ||
|
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| public void cleanPendingValidation(String uri) { | ||
| synchronized (pendingValidationRequests) { | ||
| Future<?> request = pendingValidationRequests.get(uri); | ||
| if (request != null) { | ||
| request.cancel(true); | ||
| pendingValidationRequests.remove(uri); | ||
| } | ||
| } | ||
| } | ||
| } |