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Commit acc8ed6

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Add stream-key auto-conversion for ByteRecord
Add automatic type conversion logic in StreamRecords.ofBytes() method to handle different stream key types safely. This resolves the TODO comment and prevents ClassCastException when using String or ByteBuffer stream keys without RedisTemplate. Supported conversions: - String to byte[] using UTF-8 encoding - ByteBuffer to byte[] by copying buffer contents - byte[] passed through unchanged - null values handled gracefully - Unsupported types throw IllegalArgumentException with clear message The implementation follows the same pattern as the existing ofBuffer() method for consistency. This improvement enhances developer experience when working directly with Redis connections instead of RedisTemplate, particularly useful for performance-critical scenarios or custom serialization requirements. Added comprehensive test coverage including edge cases and error handling to ensure robust behavior across all supported input types. Signed-off-by: Seo Bo Gyeong <dodu7510@gmail.com>
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‎src/main/java/org/springframework/data/redis/connection/stream/StreamRecords.java

Lines changed: 19 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -30,6 +30,7 @@
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* {@link StreamRecords} provides utilities to create specific {@link Record} instances.
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*
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* @author Christoph Strobl
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* @author Seo Bo Gyeong
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* @since 2.2
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*/
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public class StreamRecords {
@@ -197,8 +198,24 @@ public <V> ObjectRecord<S, V> ofObject(V value) {
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*/
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public ByteRecord ofBytes(Map<byte[], byte[]> value) {
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200-
// todo auto conversion of known values
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return new ByteMapBackedRecord((byte[]) stream, id, value);
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byte[] streamKey = convertStreamToByteArray(stream);
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return new ByteMapBackedRecord(streamKey, id, value);
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}
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private byte[] convertStreamToByteArray(@Nullable Object stream) {
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if (stream instanceof byte[]) {
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return (byte[]) stream;
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} else if (stream instanceof String) {
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return ((String) stream).getBytes();
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} else if (stream instanceof ByteBuffer buffer) {
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byte[] result = new byte[buffer.remaining()];
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buffer.get(result);
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return result;
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} else if (stream == null) {
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return null;
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} else {
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throw new IllegalArgumentException("Stream key %s cannot be converted to byte array".formatted(stream));
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}
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}
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/**

‎src/test/java/org/springframework/data/redis/connection/StreamRecordsUnitTests.java

Lines changed: 69 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -18,6 +18,7 @@
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import static org.assertj.core.api.Assertions.*;
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import java.io.Serializable;
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import java.nio.ByteBuffer;
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import java.util.Collections;
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import java.util.Map;
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@@ -164,4 +165,72 @@ static HashMapper<Object, String, String> simpleString(String value) {
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}
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}
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@Test // Stream key auto conversion for ofBytes method
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void ofBytesWithStringStreamKey() {
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ByteRecord record = StreamRecords.newRecord()
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.in(STRING_STREAM_KEY)
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.withId(RECORD_ID)
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.ofBytes(Collections.singletonMap(SERIALIZED_STRING_MAP_KEY, SERIALIZED_STRING_VAL));
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assertThat(record.getId()).isEqualTo(RECORD_ID);
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assertThat(record.getStream()).isEqualTo(SERIALIZED_STRING_STREAM_KEY);
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assertThat(record.getValue().keySet().iterator().next()).isEqualTo(SERIALIZED_STRING_MAP_KEY);
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assertThat(record.getValue().values().iterator().next()).isEqualTo(SERIALIZED_STRING_VAL);
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}
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@Test // Stream key auto conversion for ofBytes method with byte array
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void ofBytesWithByteArrayStreamKey() {
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ByteRecord record = StreamRecords.newRecord()
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.in(SERIALIZED_STRING_STREAM_KEY)
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.withId(RECORD_ID)
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.ofBytes(Collections.singletonMap(SERIALIZED_STRING_MAP_KEY, SERIALIZED_STRING_VAL));
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assertThat(record.getId()).isEqualTo(RECORD_ID);
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assertThat(record.getStream()).isEqualTo(SERIALIZED_STRING_STREAM_KEY);
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assertThat(record.getValue().keySet().iterator().next()).isEqualTo(SERIALIZED_STRING_MAP_KEY);
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assertThat(record.getValue().values().iterator().next()).isEqualTo(SERIALIZED_STRING_VAL);
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}
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@Test // Stream key auto conversion for ofBytes method with null stream key
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void ofBytesWithNullStreamKey() {
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ByteRecord record = StreamRecords.newRecord()
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.withId(RECORD_ID)
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.ofBytes(Collections.singletonMap(SERIALIZED_STRING_MAP_KEY, SERIALIZED_STRING_VAL));
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assertThat(record.getId()).isEqualTo(RECORD_ID);
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assertThat(record.getStream()).isNull();
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assertThat(record.getValue().keySet().iterator().next()).isEqualTo(SERIALIZED_STRING_MAP_KEY);
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assertThat(record.getValue().values().iterator().next()).isEqualTo(SERIALIZED_STRING_VAL);
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}
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@Test // Stream key auto conversion for ofBytes method with ByteBuffer stream key
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void ofBytesWithByteBufferStreamKey() {
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ByteBuffer streamKeyBuffer = ByteBuffer.wrap(SERIALIZED_STRING_STREAM_KEY);
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ByteRecord record = StreamRecords.newRecord()
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.in(streamKeyBuffer)
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.withId(RECORD_ID)
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.ofBytes(Collections.singletonMap(SERIALIZED_STRING_MAP_KEY, SERIALIZED_STRING_VAL));
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219+
assertThat(record.getId()).isEqualTo(RECORD_ID);
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assertThat(record.getStream()).isEqualTo(SERIALIZED_STRING_STREAM_KEY);
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assertThat(record.getValue().keySet().iterator().next()).isEqualTo(SERIALIZED_STRING_MAP_KEY);
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assertThat(record.getValue().values().iterator().next()).isEqualTo(SERIALIZED_STRING_VAL);
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}
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@Test // Stream key auto conversion for ofBytes method with unsupported type
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void ofBytesWithUnsupportedStreamKeyType() {
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228+
assertThatThrownBy(() -> StreamRecords.newRecord()
229+
.in(123L) // Unsupported type
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.withId(RECORD_ID)
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.ofBytes(Collections.singletonMap(SERIALIZED_STRING_MAP_KEY, SERIALIZED_STRING_VAL)))
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.isInstanceOf(IllegalArgumentException.class)
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.hasMessageContaining("Stream key 123 cannot be converted to byte array");
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}
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}

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