hanyuzheng7 commented on code in PR #14570:
URL: https://github.com/apache/kafka/pull/14570#discussion_r1396800666
##########
streams/src/main/java/org/apache/kafka/streams/state/internals/MeteredTimestampedKeyValueStore.java:
##########
@@ -102,4 +139,216 @@ static class RawAndDeserializedValue<ValueType> {
this.value = value;
}
}
+
+ @SuppressWarnings("unchecked")
+ @Override
+ public <R> QueryResult<R> query(final Query<R> query,
+ final PositionBound positionBound,
+ final QueryConfig config) {
+
+ final long start = time.nanoseconds();
+ final QueryResult<R> result;
+
+ final StoreQueryUtils.QueryHandler handler =
queryHandlers.get(query.getClass());
+ if (handler == null) {
+ result = wrapped().query(query, positionBound, config);
+ if (config.isCollectExecutionInfo()) {
+ result.addExecutionInfo(
+ "Handled in " + getClass() + " in " +
(time.nanoseconds() - start) + "ns");
+ }
+ } else {
+ result = (QueryResult<R>) handler.apply(
+ query,
+ positionBound,
+ config,
+ this
+ );
+ if (config.isCollectExecutionInfo()) {
+ result.addExecutionInfo(
+ "Handled in " + getClass() + " with serdes "
+ + serdes + " in " + (time.nanoseconds() -
start) + "ns");
+ }
+ }
+ return result;
+ }
+
+
+
+ @SuppressWarnings("unchecked")
+ private <R> QueryResult<R> runTimestampedKeyQuery(final Query<R> query,
+ final PositionBound
positionBound,
+ final QueryConfig
config) {
+ final QueryResult<R> result;
+ final TimestampedKeyQuery<K, V> typedKeyQuery =
(TimestampedKeyQuery<K, V>) query;
+ final KeyQuery<Bytes, byte[]> rawKeyQuery =
+ KeyQuery.withKey(keyBytes(typedKeyQuery.key()));
+ final QueryResult<byte[]> rawResult =
+ wrapped().query(rawKeyQuery, positionBound, config);
+ if (rawResult.isSuccess()) {
+ final Function<byte[], ValueAndTimestamp<V>> deserializer =
getDeserializeValue(serdes, wrapped());
+ final ValueAndTimestamp<V> valueAndTimestamp =
deserializer.apply(rawResult.getResult());
+ final QueryResult<ValueAndTimestamp<V>> typedQueryResult =
+
InternalQueryResultUtil.copyAndSubstituteDeserializedResult(rawResult,
valueAndTimestamp);
+ result = (QueryResult<R>) typedQueryResult;
+ } else {
+ // the generic type doesn't matter, since failed queries have no
result set.
+ result = (QueryResult<R>) rawResult;
+ }
+ return result;
+ }
+
+ @SuppressWarnings("unchecked")
+ private <R> QueryResult<R> runTimestampedRangeQuery(final Query<R> query,
+ final PositionBound
positionBound,
+ final QueryConfig
config) {
+
+ final QueryResult<R> result;
+ final TimestampedRangeQuery<K, V> typedQuery =
(TimestampedRangeQuery<K, V>) query;
+ RangeQuery<Bytes, byte[]> rawRangeQuery;
+ final boolean isKeyAscending = typedQuery.isKeyAscending();
+ rawRangeQuery = RangeQuery.withRange(
+ keyBytes(typedQuery.lowerBound().orElse(null)),
+ keyBytes(typedQuery.upperBound().orElse(null))
+ );
+ if (!isKeyAscending) {
+ rawRangeQuery = rawRangeQuery.withDescendingKeys();
+ }
+ final QueryResult<KeyValueIterator<Bytes, byte[]>> rawResult =
+ wrapped().query(rawRangeQuery, positionBound, config);
+ if (rawResult.isSuccess()) {
+ final KeyValueIterator<Bytes, byte[]> iterator =
rawResult.getResult();
+ final KeyValueIterator<K, ValueAndTimestamp<V>> resultIterator =
(KeyValueIterator<K, ValueAndTimestamp<V>>) new
MeteredTimestampedKeyValueStoreIterator(
+ iterator,
+ getSensor,
+ getDeserializeValue(serdes, wrapped()),
+ false
+ );
+ final QueryResult<KeyValueIterator<K, ValueAndTimestamp<V>>>
typedQueryResult =
+
InternalQueryResultUtil.copyAndSubstituteDeserializedResult(
+ rawResult,
+ resultIterator
+ );
+ result = (QueryResult<R>) typedQueryResult;
+ } else {
+ // the generic type doesn't matter, since failed queries have no
result set.
+ result = (QueryResult<R>) rawResult;
+ }
+ return result;
+ }
+
+ @SuppressWarnings("unchecked")
+ private <R> QueryResult<R> runKeyQuery(final Query<R> query,
+ final PositionBound positionBound,
+ final QueryConfig config) {
+ final QueryResult<R> result;
+ final KeyQuery<K, V> typedKeyQuery = (KeyQuery<K, V>) query;
+ final KeyQuery<Bytes, byte[]> rawKeyQuery =
+ KeyQuery.withKey(keyBytes(typedKeyQuery.getKey()));
+ final QueryResult<byte[]> rawResult =
+ wrapped().query(rawKeyQuery, positionBound, config);
+ if (rawResult.isSuccess()) {
+ final Function<byte[], ValueAndTimestamp<V>> deserializer =
getDeserializeValue(serdes, wrapped());
+ final ValueAndTimestamp<V> valueAndTimestamp =
deserializer.apply(rawResult.getResult());
+ final V plainValue = valueAndTimestamp == null ? null :
valueAndTimestamp.value();
+ final QueryResult<V> typedQueryResult =
+
InternalQueryResultUtil.copyAndSubstituteDeserializedResult(rawResult,
plainValue);
+ result = (QueryResult<R>) typedQueryResult;
+ } else {
+ // the generic type doesn't matter, since failed queries have no
result set.
+ result = (QueryResult<R>) rawResult;
+ }
+ return result;
+ }
+
+ @SuppressWarnings("unchecked")
+ private <R> QueryResult<R> runRangeQuery(final Query<R> query,
+ final PositionBound
positionBound,
+ final QueryConfig config) {
+
+ final QueryResult<R> result;
+ final RangeQuery<K, V> typedQuery = (RangeQuery<K, V>) query;
+ RangeQuery<Bytes, byte[]> rawRangeQuery;
+ final boolean isKeyAscending = typedQuery.isKeyAscending();
+ rawRangeQuery = RangeQuery.withRange(
+ keyBytes(typedQuery.getLowerBound().orElse(null)),
+ keyBytes(typedQuery.getUpperBound().orElse(null))
+ );
+ if (!isKeyAscending) {
+ rawRangeQuery = rawRangeQuery.withDescendingKeys();
+ }
+ final QueryResult<KeyValueIterator<Bytes, byte[]>> rawResult =
+ wrapped().query(rawRangeQuery, positionBound, config);
+ if (rawResult.isSuccess()) {
+ final KeyValueIterator<Bytes, byte[]> iterator =
rawResult.getResult();
+ final KeyValueIterator<K, V> resultIterator = new
MeteredTimestampedKeyValueStoreIterator(
+ iterator,
+ getSensor,
+ getDeserializeValue(serdes, wrapped()),
+ true
+ );
+ final QueryResult<KeyValueIterator<K, V>> typedQueryResult =
+
InternalQueryResultUtil.copyAndSubstituteDeserializedResult(
+ rawResult,
+ resultIterator
+ );
+ result = (QueryResult<R>) typedQueryResult;
+ } else {
+ // the generic type doesn't matter, since failed queries have no
result set.
+ result = (QueryResult<R>) rawResult;
+ }
+ return result;
+ }
+
+ @SuppressWarnings("unchecked")
+ private class MeteredTimestampedKeyValueStoreIterator implements
KeyValueIterator<K, V> {
+
+ private final KeyValueIterator<Bytes, byte[]> iter;
+ private final Sensor sensor;
+ private final long startNs;
+ private final Function<byte[], ValueAndTimestamp<V>> valueDeserializer;
+
+ private final boolean isKeyOrRangeQuery;
+
+ private MeteredTimestampedKeyValueStoreIterator(final
KeyValueIterator<Bytes, byte[]> iter,
+ final Sensor sensor,
+ final Function<byte[],
ValueAndTimestamp<V>> valueDeserializer,
+ final boolean
isKeyOrRangeQuery) {
Review Comment:
fixed it.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
