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Consumer Limits Stream Configuration (#979)
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| // Copyright 2023 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 io.nats.client.support.JsonSerializable; | ||
| import io.nats.client.support.JsonUtils; | ||
| import io.nats.client.support.JsonValue; | ||
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| import java.time.Duration; | ||
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| import static io.nats.client.api.ConsumerConfiguration.*; | ||
| import static io.nats.client.support.ApiConstants.INACTIVE_THRESHOLD; | ||
| import static io.nats.client.support.ApiConstants.MAX_ACK_PENDING; | ||
| import static io.nats.client.support.JsonUtils.beginJson; | ||
| import static io.nats.client.support.JsonUtils.endJson; | ||
| import static io.nats.client.support.JsonValueUtils.readInteger; | ||
| import static io.nats.client.support.JsonValueUtils.readNanos; | ||
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| /** | ||
| * ConsumerLimits | ||
| */ | ||
| public class ConsumerLimits implements JsonSerializable { | ||
| private final Duration inactiveThreshold; | ||
| private final Integer maxAckPending; | ||
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| static ConsumerLimits optionalInstance(JsonValue vConsumerLimits) { | ||
| return vConsumerLimits == null ? null : new ConsumerLimits(vConsumerLimits); | ||
| } | ||
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| ConsumerLimits(JsonValue vConsumerLimits) { | ||
| inactiveThreshold = readNanos(vConsumerLimits, INACTIVE_THRESHOLD); | ||
| maxAckPending = readInteger(vConsumerLimits, MAX_ACK_PENDING); | ||
| } | ||
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| ConsumerLimits(ConsumerLimits.Builder b) { | ||
| this.inactiveThreshold = b.inactiveThreshold; | ||
| this.maxAckPending = b.maxAckPending; | ||
| } | ||
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| /** | ||
| * Get the amount of time before the consumer is deemed inactive. | ||
| * @return the inactive threshold | ||
| */ | ||
| public Duration getInactiveThreshold() { | ||
| return inactiveThreshold; | ||
| } | ||
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| /** | ||
| * Gets the maximum ack pending configuration. | ||
| * @return maximum ack pending. | ||
| */ | ||
| public long getMaxAckPending() { | ||
| return getOrUnset(maxAckPending); | ||
| } | ||
|
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| public String toJson() { | ||
| StringBuilder sb = beginJson(); | ||
| JsonUtils.addFieldAsNanos(sb, INACTIVE_THRESHOLD, inactiveThreshold); | ||
| JsonUtils.addField(sb, MAX_ACK_PENDING, maxAckPending); | ||
| return endJson(sb).toString(); | ||
| } | ||
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| /** | ||
| * Creates a builder for a consumer limits object. | ||
| * @return the builder. | ||
| */ | ||
| public static Builder builder() { | ||
| return new Builder(); | ||
| } | ||
|
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| /** | ||
| * ConsumerLimits can be created using a Builder. | ||
| */ | ||
| public static class Builder { | ||
| private Duration inactiveThreshold; | ||
| private Integer maxAckPending; | ||
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| /** | ||
| * sets the amount of time before the consumer is deemed inactive. | ||
| * @param inactiveThreshold the threshold duration | ||
| * @return Builder | ||
| */ | ||
| public Builder inactiveThreshold(Duration inactiveThreshold) { | ||
| this.inactiveThreshold = normalize(inactiveThreshold); | ||
| return this; | ||
| } | ||
|
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| /** | ||
| * sets the amount of time before the consumer is deemed inactive. | ||
| * @param inactiveThreshold the threshold duration in milliseconds | ||
| * @return Builder | ||
| */ | ||
| public Builder inactiveThreshold(long inactiveThreshold) { | ||
| this.inactiveThreshold = normalizeDuration(inactiveThreshold); | ||
| return this; | ||
| } | ||
|
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| /** | ||
| * Sets the maximum ack pending or null to unset / clear. | ||
| * @param maxAckPending maximum pending acknowledgements. | ||
| * @return Builder | ||
| */ | ||
| public Builder maxAckPending(Long maxAckPending) { | ||
| this.maxAckPending = normalize(maxAckPending, STANDARD_MIN); | ||
| return this; | ||
| } | ||
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| /** | ||
| * Sets the maximum ack pending. | ||
| * @param maxAckPending maximum pending acknowledgements. | ||
| * @return Builder | ||
| */ | ||
| public Builder maxAckPending(long maxAckPending) { | ||
| this.maxAckPending = normalize(maxAckPending, STANDARD_MIN); | ||
| return this; | ||
| } | ||
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| /** | ||
| * Build a ConsumerLimits object | ||
| * @return the ConsumerLimits | ||
| */ | ||
| public ConsumerLimits build() { | ||
| return new ConsumerLimits(this); | ||
| } | ||
| } | ||
| } |
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