rdblue commented on a change in pull request #3424: URL: https://github.com/apache/iceberg/pull/3424#discussion_r740335459
########## File path: core/src/main/java/org/apache/iceberg/rest/http/RequestResponseSerializers.java ########## @@ -0,0 +1,162 @@ +/* + * 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.iceberg.rest.http; + +import com.fasterxml.jackson.core.JsonGenerator; +import com.fasterxml.jackson.core.JsonParser; +import com.fasterxml.jackson.databind.DeserializationContext; +import com.fasterxml.jackson.databind.JsonDeserializer; +import com.fasterxml.jackson.databind.JsonNode; +import com.fasterxml.jackson.databind.JsonSerializer; +import com.fasterxml.jackson.databind.ObjectMapper; +import com.fasterxml.jackson.databind.SerializerProvider; +import com.fasterxml.jackson.databind.module.SimpleModule; +import java.io.IOException; +import org.apache.iceberg.PartitionSpec; +import org.apache.iceberg.PartitionSpecParser; +import org.apache.iceberg.Schema; +import org.apache.iceberg.SchemaParser; +import org.apache.iceberg.SortOrder; +import org.apache.iceberg.SortOrderParser; +import org.apache.iceberg.TableMetadata; +import org.apache.iceberg.TableMetadataParser; +import org.apache.iceberg.catalog.Namespace; +import org.apache.iceberg.catalog.TableIdentifier; + + +public class RequestResponseSerializers { + + private RequestResponseSerializers() { + } + + public static void registerAll(ObjectMapper mapper) { + SimpleModule module = new SimpleModule(); + module + .addSerializer(TableIdentifier.class, new RequestResponseSerializers.TableIdentifierSerializer()) + .addDeserializer(TableIdentifier.class, new RequestResponseSerializers.TableIdentifierDeserializer()) + .addSerializer(Namespace.class, new RequestResponseSerializers.NamespaceSerializer()) + .addDeserializer(Namespace.class, new RequestResponseSerializers.NamespaceDeserializer()) + .addSerializer(Schema.class, new RequestResponseSerializers.SchemaSerializer()) + .addDeserializer(Schema.class, new RequestResponseSerializers.SchemaDeserializer()) + .addSerializer(PartitionSpec.class, new RequestResponseSerializers.PartitionSpecSerializer()) + .addDeserializer(PartitionSpec.class, new RequestResponseSerializers.PartitionSpecDeserializer()) + .addSerializer(SortOrder.class, new RequestResponseSerializers.SortOrderSerializer()) + .addDeserializer(SortOrder.class, new RequestResponseSerializers.SortOrderDeserializer()) + .addSerializer(TableMetadata.class, new RequestResponseSerializers.TableMetadataSerializer()); + mapper.registerModule(module); + } + + public static class NamespaceDeserializer extends JsonDeserializer<Namespace> { + @Override + public Namespace deserialize(JsonParser p, DeserializationContext ctxt) throws IOException { + JsonNode jsonNode = p.getCodec().readTree(p); + return Namespace.of(jsonNode.asText().split("\\.")); + } + } + + public static class NamespaceSerializer extends JsonSerializer<Namespace> { + @Override + public void serialize(Namespace namespace, JsonGenerator gen, SerializerProvider serializers) throws IOException { + gen.writeString(namespace.toString()); + } + } + + public static class TableIdentifierDeserializer extends JsonDeserializer<TableIdentifier> { + @Override + public TableIdentifier deserialize(JsonParser p, DeserializationContext ctxt) throws IOException { + JsonNode jsonNode = p.getCodec().readTree(p); + return TableIdentifier.parse(jsonNode.asText()); + } + } + + public static class TableIdentifierSerializer extends JsonSerializer<TableIdentifier> { + @Override + public void serialize(TableIdentifier identifier, JsonGenerator gen, SerializerProvider serializers) + throws IOException { + gen.writeString(identifier.toString()); + } + } + + public static class SchemaDeserializer extends JsonDeserializer<Schema> { + @Override + public Schema deserialize(JsonParser p, DeserializationContext context) + throws IOException { + JsonNode jsonNode = p.getCodec().readTree(p); + Schema schema = SchemaParser.fromJson(jsonNode); + context.setAttribute("schema", schema); + return schema; + } + } + + public static class SchemaSerializer extends JsonSerializer<Schema> { + @Override + public void serialize(Schema schema, JsonGenerator gen, SerializerProvider serializers) + throws IOException { + SchemaParser.toJson(schema, gen); + } + } + + public static class PartitionSpecSerializer extends JsonSerializer<PartitionSpec> { + @Override + public void serialize(PartitionSpec partitionSpec, JsonGenerator gen, SerializerProvider serializers) + throws IOException { + PartitionSpecParser.toJson(partitionSpec, gen); + } + } + + public static class PartitionSpecDeserializer extends JsonDeserializer<PartitionSpec> { + @Override + public PartitionSpec deserialize(JsonParser p, DeserializationContext context) + throws IOException { + JsonNode jsonNode = p.getCodec().readTree(p); + + Schema schema = (Schema) context.getAttribute("schema"); + + return PartitionSpecParser.fromJson(schema, jsonNode); + } + } + + public static class SortOrderSerializer extends JsonSerializer<SortOrder> { + @Override + public void serialize(SortOrder sortOrder, JsonGenerator gen, SerializerProvider serializers) + throws IOException { + SortOrderParser.toJson(sortOrder, gen); + } + } + + public static class SortOrderDeserializer extends JsonDeserializer<SortOrder> { + @Override + public SortOrder deserialize(JsonParser p, DeserializationContext context) + throws IOException { + JsonNode jsonNode = p.getCodec().readTree(p); + Schema schema = (Schema) context.getAttribute("schema"); + + return SortOrderParser.fromJson(schema, jsonNode); + } + } + + public static class TableMetadataSerializer extends JsonSerializer<TableMetadata> { Review comment: Yeah, there's no need to only read from a metadata file. -- This is an automated message from the Apache Git Service. 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