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61
core/src/main/java/org/apache/accumulo/core/client/admin/TabletMergeability.java
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| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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. | ||
| */ | ||
| package org.apache.accumulo.core.client.admin; | ||
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| import java.time.Duration; | ||
| import java.util.Objects; | ||
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| import com.google.common.base.Preconditions; | ||
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| public class TabletMergeability { | ||
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| public static final TabletMergeability NEVER = new TabletMergeability(Duration.ofNanos(-1)); | ||
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| public static final TabletMergeability ALWAYS = new TabletMergeability(Duration.ofNanos(0)); | ||
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| private final Duration delay; | ||
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| private TabletMergeability(Duration delay) { | ||
| this.delay = Objects.requireNonNull(delay); | ||
| } | ||
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| public boolean isNever() { | ||
| return this.delay.isNegative(); | ||
| } | ||
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| public boolean isAlways() { | ||
| return this.delay.isZero(); | ||
| } | ||
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| public Duration getDelay() { | ||
| return delay; | ||
| } | ||
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| public static TabletMergeability from(Duration delay) { | ||
| Preconditions.checkArgument(delay.getNano() >= -1, | ||
| "Duration of delay must be -1, 0, or a positive delay."); | ||
| return new TabletMergeability(delay); | ||
| } | ||
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| public static TabletMergeability after(Duration delay) { | ||
| Preconditions.checkArgument(delay.getNano() > 0, "Duration of delay must be greater than 0."); | ||
| return new TabletMergeability(delay); | ||
| } | ||
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| } |
44 changes: 44 additions & 0 deletions
44
core/src/main/java/org/apache/accumulo/core/metadata/TabletMergeabilityUtil.java
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| @@ -0,0 +1,44 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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. | ||
| */ | ||
| package org.apache.accumulo.core.metadata; | ||
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| import java.time.Duration; | ||
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| import org.apache.accumulo.core.client.admin.TabletMergeability; | ||
| import org.apache.accumulo.core.data.Value; | ||
| import org.apache.accumulo.core.util.time.SteadyTime; | ||
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| public class TabletMergeabilityUtil { | ||
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| public static Value toValue(TabletMergeability tabletMergeability) { | ||
| return new Value(Long.toString(tabletMergeability.getDelay().toNanos())); | ||
| } | ||
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| public static TabletMergeability fromValue(Value value) { | ||
| return TabletMergeability.from(Duration.ofNanos(Long.parseLong(value.toString()))); | ||
| } | ||
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| public boolean isMergeable(TabletMergeability mergeability, SteadyTime currentTime) { | ||
| if (mergeability.isNever()) { | ||
| return false; | ||
| } | ||
| return currentTime.getDuration().compareTo(mergeability.getDelay()) >= 0; | ||
| } | ||
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| } |
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