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…log-to-scenario-description # Conflicts: # build.gradle
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src/main/java/com/epam/reportportal/karate/utils/BlockingConcurrentHashMap.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| /* | ||
| * Copyright 2024 EPAM Systems | ||
| * | ||
| * 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 | ||
| * | ||
| * https://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. | ||
| */ | ||
|
|
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| package com.epam.reportportal.karate.utils; | ||
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|
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| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import javax.annotation.Nonnull; | ||
| import javax.annotation.Nullable; | ||
| import java.util.Map; | ||
| import java.util.concurrent.ArrayBlockingQueue; | ||
| import java.util.concurrent.BlockingQueue; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
| import java.util.concurrent.TimeUnit; | ||
| import java.util.function.Function; | ||
|
|
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| public class BlockingConcurrentHashMap<K, V> { | ||
| private static final Logger LOGGER = LoggerFactory.getLogger(BlockingConcurrentHashMap.class); | ||
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| private static final class BlockingReference<T> { | ||
| private final BlockingQueue<T> lock = new ArrayBlockingQueue<>(1); | ||
| private volatile boolean set = false; | ||
| private volatile T value; | ||
|
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| public void set(Function<?, T> supplier) { | ||
| lock.clear(); | ||
| set = false; | ||
| try { | ||
| value = supplier.apply(null); | ||
| set = true; | ||
| try { | ||
| //noinspection StatementWithEmptyBody | ||
| while (lock.offer(value)) { | ||
| // Put while waiting Threads take values | ||
| } | ||
| } catch (IllegalStateException ignore) { | ||
| } | ||
| } catch (Exception e) { | ||
| LOGGER.warn("Unable to get result value from passed supplier.", e); | ||
| throw e; | ||
| } | ||
| } | ||
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| public T get(long timeout, TimeUnit unit) throws InterruptedException { | ||
| if (!set) { | ||
| return lock.poll(timeout, unit); | ||
| } else { | ||
| return value; | ||
| } | ||
| } | ||
| } | ||
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| private static final int TIMEOUT = 1; | ||
| private static final TimeUnit TIMEOUT_UNIT = TimeUnit.MINUTES; | ||
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| private final Map<K, BlockingReference<V>> map = new ConcurrentHashMap<>(); | ||
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| public void computeIfAbsent(@Nonnull K key, Function<?, V> mappingFunction) { | ||
| map.computeIfAbsent(key, k -> new BlockingReference<>()).set(mappingFunction); | ||
| } | ||
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| @Nullable | ||
| public V get(@Nonnull K key) { | ||
| try { | ||
| return map.computeIfAbsent(key, k -> new BlockingReference<>()).get(TIMEOUT, TIMEOUT_UNIT); | ||
| } catch (InterruptedException e) { | ||
| LOGGER.warn("Wait for value was interrupted", e); | ||
| } | ||
| return null; | ||
| } | ||
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| @Nullable | ||
| public V remove(@Nonnull K key) { | ||
| try { | ||
| return map.remove(key).get(TIMEOUT, TIMEOUT_UNIT); | ||
| } catch (InterruptedException e) { | ||
| LOGGER.warn("Wait for value was interrupted", e); | ||
| } | ||
| return null; | ||
| } | ||
| } |