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KeyValue schema support for pulsar sql #6325
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f29d602
add `KeyValueSchema` support for pulsar sql
dd44892
add `KeyValueSchema` support for pulsar sql
fcd5fa6
Merge branch 'pulsar-sql-schema-kv' of https://github.com/gaoran10/pu…
0a5f532
fix
1057706
fix
be97bf2
fix
35a7056
modify prefix of the key schema filed name to '__key', remove the pre…
e2a9226
test fix
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91 changes: 91 additions & 0 deletions
91
...r-sql/presto-pulsar/src/main/java/org/apache/pulsar/sql/presto/KeyValueSchemaHandler.java
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/** | ||
* Licensed to the Apache Software Foundation (ASF) under one | ||
* or more contributor license agreements. See the NOTICE file | ||
* distributed with this work for additional information | ||
* regarding copyright ownership. The ASF licenses this file | ||
* to you 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. | ||
*/ | ||
package org.apache.pulsar.sql.presto; | ||
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import io.airlift.log.Logger; | ||
import io.netty.buffer.ByteBuf; | ||
import java.util.List; | ||
import java.util.Objects; | ||
import org.apache.pulsar.client.impl.schema.KeyValueSchemaInfo; | ||
import org.apache.pulsar.common.schema.KeyValue; | ||
import org.apache.pulsar.common.schema.KeyValueEncodingType; | ||
import org.apache.pulsar.common.schema.SchemaInfo; | ||
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/** | ||
* Schema handler for payload in the KeyValue format. | ||
*/ | ||
public class KeyValueSchemaHandler implements SchemaHandler { | ||
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private static final Logger log = Logger.get(KeyValueSchemaHandler.class); | ||
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private final List<PulsarColumnHandle> columnHandles; | ||
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private final SchemaHandler keySchemaHandler; | ||
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private final SchemaHandler valueSchemaHandler; | ||
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private KeyValueEncodingType keyValueEncodingType; | ||
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public KeyValueSchemaHandler(SchemaInfo schemaInfo, List<PulsarColumnHandle> columnHandles) { | ||
this.columnHandles = columnHandles; | ||
KeyValue<SchemaInfo, SchemaInfo> kvSchemaInfo = KeyValueSchemaInfo.decodeKeyValueSchemaInfo(schemaInfo); | ||
keySchemaHandler = PulsarSchemaHandlers.newPulsarSchemaHandler(kvSchemaInfo.getKey(), columnHandles); | ||
valueSchemaHandler = PulsarSchemaHandlers.newPulsarSchemaHandler(kvSchemaInfo.getValue(), columnHandles); | ||
keyValueEncodingType = KeyValueSchemaInfo.decodeKeyValueEncodingType(schemaInfo); | ||
} | ||
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@Override | ||
public Object deserialize(ByteBuf payload) { | ||
return null; | ||
} | ||
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@Override | ||
public Object deserialize(ByteBuf keyPayload, ByteBuf dataPayload) { | ||
ByteBuf keyByteBuf; | ||
ByteBuf valueByteBuf; | ||
if (Objects.equals(keyValueEncodingType, KeyValueEncodingType.INLINE)) { | ||
dataPayload.resetReaderIndex(); | ||
int keyLength = dataPayload.readInt(); | ||
keyByteBuf = dataPayload.readSlice(keyLength); | ||
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int valueLength = dataPayload.readInt(); | ||
valueByteBuf = dataPayload.readSlice(valueLength); | ||
} else { | ||
keyByteBuf = keyPayload; | ||
valueByteBuf = dataPayload; | ||
} | ||
Object keyObj = keySchemaHandler.deserialize(keyByteBuf); | ||
Object valueObj = valueSchemaHandler.deserialize(valueByteBuf); | ||
return new KeyValue<>(keyObj, valueObj); | ||
} | ||
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@Override | ||
public Object extractField(int index, Object currentRecord) { | ||
PulsarColumnHandle pulsarColumnHandle = this.columnHandles.get(index); | ||
KeyValue<Object, Object> keyValue = (KeyValue<Object, Object>) currentRecord; | ||
if (pulsarColumnHandle.isKey()) { | ||
return keySchemaHandler.extractField(index, keyValue.getKey()); | ||
} else if (pulsarColumnHandle.isValue()) { | ||
return valueSchemaHandler.extractField(index, keyValue.getValue()); | ||
} | ||
return null; | ||
} | ||
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} |
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It's better to named isKeyBase64Encoded().