io.github.bucket4j.distributed.remote.MutableBucketEntry Maven / Gradle / Ivy
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/*-
* ========================LICENSE_START=================================
* Bucket4j
* %%
* Copyright (C) 2015 - 2020 Vladimir Bukhtoyarov
* %%
* 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.
* =========================LICENSE_END==================================
*/
package io.github.bucket4j.distributed.remote;
import java.util.Objects;
import io.github.bucket4j.distributed.versioning.Version;
import static io.github.bucket4j.distributed.serialization.InternalSerializationHelper.deserializeState;
import static io.github.bucket4j.distributed.serialization.InternalSerializationHelper.serializeState;
public class MutableBucketEntry {
private RemoteBucketState state;
private boolean stateModified;
public MutableBucketEntry(RemoteBucketState state) {
this.state = state;
}
public MutableBucketEntry(byte[] originalStateBytes) {
this.state = originalStateBytes == null? null : deserializeState(originalStateBytes);
}
public boolean exists() {
return state != null;
}
public boolean isStateModified() {
return stateModified;
}
public void set(RemoteBucketState state) {
this.state = Objects.requireNonNull(state);
this.stateModified = true;
}
public RemoteBucketState get() {
if (state == null) {
throw new IllegalStateException("'exists' must be called before 'get'");
}
return state;
}
public byte[] getStateBytes(Version backwardCompatibilityVersion) {
return serializeState(get(), backwardCompatibilityVersion);
}
}