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105 changes: 105 additions & 0 deletions
105
src/main/java/io/nats/client/api/KeyValuePurgeOptions.java
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| // Copyright 2022 The NATS 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. | ||
|
|
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| package io.nats.client.api; | ||
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| import java.time.Duration; | ||
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| public class KeyValuePurgeOptions { | ||
|
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| /** | ||
| * The default time in millis that is used for as the threshold to keep markers. | ||
| */ | ||
| public static long DEFAULT_THRESHOLD_MILLIS = Duration.ofMinutes(30).toMillis(); | ||
|
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| private final long deleteMarkersThresholdMillis; | ||
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| private KeyValuePurgeOptions(Builder b) { | ||
| this.deleteMarkersThresholdMillis = b.deleteMarkersThresholdMillis; | ||
| } | ||
|
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| /** | ||
| * The value of the delete marker threshold, in milliseconds. | ||
| * @return the threshold | ||
| */ | ||
| public long getDeleteMarkersThresholdMillis() { | ||
| return deleteMarkersThresholdMillis; | ||
| } | ||
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| /** | ||
| * Creates a builder for the Key Value Purge Options. | ||
| * @return a key value purge options builder | ||
| */ | ||
| public static Builder builder() { | ||
| return new Builder(); | ||
| } | ||
|
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| /** | ||
| * KeyValuePurgeOptions is created using a Builder. The builder supports chaining and will | ||
| * create a default set of options if no methods are calls. | ||
| * | ||
| * <p>{@code new KeyValuePurgeOptions.Builder().build()} will create a new KeyValuePurgeOptions. | ||
| * | ||
| */ | ||
| public static class Builder { | ||
| private long deleteMarkersThresholdMillis = DEFAULT_THRESHOLD_MILLIS; | ||
|
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| /** | ||
| * Set the delete marker threshold. | ||
| * Null or duration of 0 will assume the default threshold {@link #DEFAULT_THRESHOLD_MILLIS} | ||
| * Duration less than zero will assume no threshold and will not keep any markers. | ||
| * @param deleteMarkersThreshold the threshold duration or null | ||
| * @return The builder | ||
| */ | ||
| public Builder deleteMarkersThreshold(Duration deleteMarkersThreshold) { | ||
| this.deleteMarkersThresholdMillis = deleteMarkersThreshold == null | ||
| ? DEFAULT_THRESHOLD_MILLIS : deleteMarkersThreshold.toMillis(); | ||
| return this; | ||
| } | ||
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| /** | ||
| * Set the delete marker threshold. | ||
| * 0 will assume the default threshold {@link #DEFAULT_THRESHOLD_MILLIS} | ||
| * Less than zero will assume no threshold and will not keep any markers. | ||
| * @param deleteMarkersThresholdMillis the threshold millis | ||
| * @return The builder | ||
| */ | ||
| public Builder deleteMarkersThreshold(long deleteMarkersThresholdMillis) { | ||
| this.deleteMarkersThresholdMillis = deleteMarkersThresholdMillis; | ||
| return this; | ||
| } | ||
|
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| /** | ||
| * Set the delete marker threshold to -1 so as to not keep any markers | ||
| * @return The builder | ||
| */ | ||
| public Builder deleteMarkersNoThreshold() { | ||
| this.deleteMarkersThresholdMillis = -1; | ||
| return this; | ||
| } | ||
|
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| /** | ||
| * Build the Key Value Purge Options | ||
| * @return the options | ||
| */ | ||
| public KeyValuePurgeOptions build() { | ||
| if (deleteMarkersThresholdMillis < 0) { | ||
| deleteMarkersThresholdMillis = -1; | ||
| } | ||
| else if (deleteMarkersThresholdMillis == 0) { | ||
| deleteMarkersThresholdMillis = DEFAULT_THRESHOLD_MILLIS; | ||
| } | ||
| return new KeyValuePurgeOptions(this); | ||
| } | ||
| } | ||
| } |
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