Add PolarisObjectMapper #2164
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.polaris.core.persistence; | ||
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| import com.fasterxml.jackson.core.JsonProcessingException; | ||
| import com.fasterxml.jackson.core.type.TypeReference; | ||
| import com.fasterxml.jackson.databind.DeserializationFeature; | ||
| import com.fasterxml.jackson.databind.JsonMappingException; | ||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import java.util.Map; | ||
| import org.apache.iceberg.rest.RESTSerializers; | ||
| import org.apache.polaris.core.PolarisDiagnostics; | ||
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| /** A mapper to serialize/deserialize polaris objects. */ | ||
| public class PolarisObjectMapper { | ||
| /** mapper, allows to serialize/deserialize properties to/from JSON */ | ||
| private static final ObjectMapper MAPPER = configureMapper(); | ||
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| private static ObjectMapper configureMapper() { | ||
| ObjectMapper mapper = new ObjectMapper(); | ||
| mapper.configure(DeserializationFeature.FAIL_ON_IGNORED_PROPERTIES, false); | ||
| RESTSerializers.registerAll(mapper); | ||
| return mapper; | ||
| } | ||
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| private final PolarisDiagnostics diagnostics; | ||
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| public PolarisObjectMapper(PolarisDiagnostics diagnostics) { | ||
| this.diagnostics = diagnostics; | ||
| } | ||
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| public String serialize(Object object) { | ||
| try { | ||
| return MAPPER.writeValueAsString(object); | ||
| } catch (JsonProcessingException e) { | ||
| diagnostics.fail("got_json_processing_exception", e.getMessage()); | ||
| } | ||
| return ""; | ||
| } | ||
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| public <T> T deserialize(String json, Class<T> klass) { | ||
| try { | ||
| return MAPPER.readValue(json, klass); | ||
| } catch (JsonProcessingException e) { | ||
| diagnostics.fail("got_json_processing_exception", e.getMessage()); | ||
| } | ||
| return null; | ||
| } | ||
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| /** | ||
| * Given the internal property as a map of key/value pairs, serialize it to a String | ||
| * | ||
| * @param properties a map of key/value pairs | ||
| * @return a String, the JSON representation of the map | ||
| */ | ||
| public String serializeProperties(Map<String, String> properties) { | ||
| try { | ||
| // Serialize the Map<String, String> to a JSON string | ||
| return MAPPER.writeValueAsString(properties); | ||
| } catch (JsonProcessingException ex) { | ||
| diagnostics.fail("got_json_processing_exception", ex.getMessage()); | ||
| } | ||
| return ""; | ||
| } | ||
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| /** | ||
| * Given the serialized properties, deserialize those to a {@code Map<String, String>} | ||
| * | ||
| * @param properties a JSON string representing the set of properties | ||
| * @return a Map of string | ||
| */ | ||
| public Map<String, String> deserializeProperties(String properties) { | ||
| try { | ||
| // Deserialize the JSON string to a Map<String, String> | ||
| return MAPPER.readValue(properties, new TypeReference<>() {}); | ||
| } catch (JsonMappingException ex) { | ||
| diagnostics.fail("got_json_mapping_exception", "properties={}, ex={}", properties, ex); | ||
| } catch (JsonProcessingException ex) { | ||
| diagnostics.fail("got_json_processing_exception", "properties={}, ex={}", properties, ex); | ||
| } | ||
| return null; | ||
| } | ||
| } |
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if
PolarisObjectMapperUtilmethods did not require thePolarisDiagnosticsfor reporting json-related errors, then this usage ofCallContext.getCurrentContext()could go away (also below in this file).There was a problem hiding this comment.
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found this gem a well:
polaris/polaris-core/src/main/java/org/apache/polaris/core/entity/CatalogEntity.java
Lines 219 to 221 in 987c554