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[draft] filter expired data when restore
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31 changes: 31 additions & 0 deletions
31
flink-runtime/src/main/java/org/apache/flink/runtime/state/RestoredStateTransformer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| package org.apache.flink.runtime.state; | ||
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| import javax.annotation.Nullable; | ||
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| public interface RestoredStateTransformer<T> { | ||
| @Nullable | ||
| T filterOrTransform(@Nullable T value); | ||
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| interface RestoredStateTransformerFactory<T> { | ||
| RestoredStateTransformerFactory<?> NO_TRANSFORM = createNoTransform(); | ||
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| static <T> RestoredStateTransformerFactory<T> noTransform() { | ||
| return (RestoredStateTransformerFactory<T>) NO_TRANSFORM; | ||
| } | ||
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| static <T> RestoredStateTransformerFactory<T> createNoTransform() { | ||
| return restoredMetaInfo -> new RestoredStateTransformer<T>() { | ||
| @Nullable | ||
| @Override | ||
| public T filterOrTransform(@Nullable T value) { | ||
| return value; | ||
| } | ||
| }; | ||
| } | ||
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| RestoredStateTransformer<T> createRestoredStateTransformer( | ||
| RegisteredKeyValueStateBackendMetaInfo<?, ?> restoredMetaInfo); | ||
| } | ||
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| } |
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40 changes: 40 additions & 0 deletions
40
...-runtime/src/main/java/org/apache/flink/runtime/state/ttl/TtlStateRestoreTransformer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| package org.apache.flink.runtime.state.ttl; | ||
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| import org.apache.flink.runtime.state.RegisteredKeyValueStateBackendMetaInfo; | ||
| import org.apache.flink.runtime.state.RestoredStateTransformer; | ||
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| import javax.annotation.Nullable; | ||
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| public class TtlStateRestoreTransformer<T> implements RestoredStateTransformer<TtlValue<T>> { | ||
| private final TtlTimeProvider ttlTimeProvider; | ||
| private long oldTtlInMilliseconds; | ||
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| public TtlStateRestoreTransformer(TtlTimeProvider ttlTimeProvider, RegisteredKeyValueStateBackendMetaInfo<?, ?> oldMetaInfo) { | ||
| this.ttlTimeProvider = ttlTimeProvider; | ||
| this.oldTtlInMilliseconds = oldMetaInfo.getStateTtlTime().get().toMilliseconds(); | ||
| } | ||
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| @Nullable | ||
| @Override | ||
| public TtlValue<T> filterOrTransform(@Nullable TtlValue<T> value) { | ||
| if (value != null && TtlUtils.expired(value.getLastAccessTimestamp(), oldTtlInMilliseconds, ttlTimeProvider)) { | ||
| return null; | ||
| } | ||
| return value; | ||
| } | ||
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| public static class Factory<TTLV> implements RestoredStateTransformerFactory<TtlValue<TTLV>> { | ||
| private final TtlTimeProvider ttlTimeProvider; | ||
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| public Factory(TtlTimeProvider ttlTimeProvider) { | ||
| this.ttlTimeProvider = ttlTimeProvider; | ||
| } | ||
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| @Override | ||
| public RestoredStateTransformer<TtlValue<TTLV>> createRestoredStateTransformer( | ||
| RegisteredKeyValueStateBackendMetaInfo<?, ?> restoredMetaInfo) { | ||
| return new TtlStateRestoreTransformer<>(ttlTimeProvider, restoredMetaInfo); | ||
| } | ||
| } | ||
| } |
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