bbejeck commented on code in PR #22318:
URL: https://github.com/apache/kafka/pull/22318#discussion_r3335950259
##########
streams/src/main/java/org/apache/kafka/streams/state/internals/MeteredWindowStore.java:
##########
@@ -380,6 +332,70 @@ public KeyValueIterator<Windowed<K>, V> backwardAll() {
);
}
+ private final class ReadOnlyView implements ReadOnlyWindowStore<K, V> {
+
+ private final ReadOnlyWindowStore<Bytes, byte[]> underlying;
+
+ ReadOnlyView(final ReadOnlyWindowStore<Bytes, byte[]> underlying) {
+ this.underlying = underlying;
+ }
+
+ @Override
+ public V fetch(final K key, final long windowStartTimestamp) {
+ Objects.requireNonNull(key, "key cannot be null");
+ return maybeMeasureLatency(
+ () -> {
+ final byte[] result = underlying.fetch(serializeKey(key),
windowStartTimestamp);
+ return result == null ? null : deserializeValue(result);
+ },
+ time,
+ fetchSensor
+ );
+ }
+
+ @Override
+ public WindowStoreIterator<V> fetch(final K key, final Instant
timeFrom, final Instant timeTo) {
Review Comment:
nit: parameter per line
##########
streams/src/main/java/org/apache/kafka/streams/state/internals/MeteredWindowStore.java:
##########
@@ -380,6 +332,70 @@ public KeyValueIterator<Windowed<K>, V> backwardAll() {
);
}
+ private final class ReadOnlyView implements ReadOnlyWindowStore<K, V> {
+
+ private final ReadOnlyWindowStore<Bytes, byte[]> underlying;
+
+ ReadOnlyView(final ReadOnlyWindowStore<Bytes, byte[]> underlying) {
+ this.underlying = underlying;
+ }
+
+ @Override
+ public V fetch(final K key, final long windowStartTimestamp) {
+ Objects.requireNonNull(key, "key cannot be null");
+ return maybeMeasureLatency(
+ () -> {
+ final byte[] result = underlying.fetch(serializeKey(key),
windowStartTimestamp);
+ return result == null ? null : deserializeValue(result);
+ },
+ time,
+ fetchSensor
+ );
+ }
+
+ @Override
+ public WindowStoreIterator<V> fetch(final K key, final Instant
timeFrom, final Instant timeTo) {
Review Comment:
nit: parameter per line
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