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feat: Jackson module to handle Go (de)serialization nuances
Signed-off-by: Marc Nuri <[email protected]>
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71 changes: 71 additions & 0 deletions
71
...model-common/src/main/java/io/fabric8/kubernetes/model/jackson/GoIntegerDeserializer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| /* | ||
| * Copyright (C) 2015 Red Hat, Inc. | ||
| * | ||
| * Licensed 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 io.fabric8.kubernetes.model.jackson; | ||
|
|
||
| import com.fasterxml.jackson.core.JsonParser; | ||
| import com.fasterxml.jackson.databind.BeanProperty; | ||
| import com.fasterxml.jackson.databind.DeserializationContext; | ||
| import com.fasterxml.jackson.databind.JsonDeserializer; | ||
| import com.fasterxml.jackson.databind.deser.ContextualDeserializer; | ||
| import com.fasterxml.jackson.databind.deser.std.StdDeserializer; | ||
|
|
||
| import java.io.IOException; | ||
| import java.util.Arrays; | ||
| import java.util.HashSet; | ||
| import java.util.Set; | ||
| import java.util.regex.Matcher; | ||
| import java.util.regex.Pattern; | ||
|
|
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| public class GoIntegerDeserializer extends StdDeserializer<Integer> implements ContextualDeserializer { | ||
|
|
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| private static final Pattern OCTAL = Pattern.compile("(0[oO]?)([0-7]+)"); | ||
| private static final GoIntegerDeserializer APPLICABLE_INSTANCE = new GoIntegerDeserializer(true); | ||
| private static final Set<String> APPLICABLE_FIELDS = new HashSet<>(Arrays.asList("mode", "defaultMode")); | ||
|
|
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| private final boolean applicable; | ||
|
|
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| protected GoIntegerDeserializer() { | ||
| this(false); | ||
| } | ||
|
|
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| private GoIntegerDeserializer(boolean applicable) { | ||
| super(Integer.class); | ||
| this.applicable = applicable; | ||
| } | ||
|
|
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| @Override | ||
| public Integer deserialize(JsonParser p, DeserializationContext ctxt) throws IOException { | ||
| final String value = p.readValueAs(String.class); | ||
| if (value == null) { | ||
| return null; | ||
| } | ||
| if (applicable) { | ||
| final Matcher matcher = OCTAL.matcher(value); | ||
| if (matcher.find()) { | ||
| return Integer.valueOf(matcher.group(2), 8); | ||
| } | ||
| } | ||
| return _parseInteger(ctxt, value); | ||
| } | ||
|
|
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| @Override | ||
| public JsonDeserializer<?> createContextual(DeserializationContext ctxt, BeanProperty property) { | ||
| if (APPLICABLE_FIELDS.contains(property.getName())) { | ||
| return APPLICABLE_INSTANCE; | ||
| } | ||
| return this; | ||
| } | ||
| } |
108 changes: 108 additions & 0 deletions
108
...l-common/src/test/java/io/fabric8/kubernetes/model/jackson/GoIntegerDeserializerTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| /* | ||
| * Copyright (C) 2015 Red Hat, Inc. | ||
| * | ||
| * Licensed 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 io.fabric8.kubernetes.model.jackson; | ||
|
|
||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import com.fasterxml.jackson.databind.exc.InvalidFormatException; | ||
| import lombok.Data; | ||
| import org.junit.jupiter.api.BeforeEach; | ||
| import org.junit.jupiter.api.Nested; | ||
| import org.junit.jupiter.api.Test; | ||
| import org.junit.jupiter.api.TestInstance; | ||
| import org.junit.jupiter.params.ParameterizedTest; | ||
| import org.junit.jupiter.params.provider.Arguments; | ||
| import org.junit.jupiter.params.provider.MethodSource; | ||
|
|
||
| import java.util.stream.Stream; | ||
|
|
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| import static org.assertj.core.api.Assertions.assertThat; | ||
| import static org.assertj.core.api.Assertions.assertThatThrownBy; | ||
| import static org.junit.jupiter.api.TestInstance.Lifecycle.PER_CLASS; | ||
|
|
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| class GoIntegerDeserializerTest { | ||
|
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| private ObjectMapper context; | ||
|
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| @BeforeEach | ||
| void setUp() { | ||
| context = new ObjectMapper(); | ||
| context.registerModule(new GoCompatibilityModule()); | ||
| } | ||
|
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| @Test | ||
| void defaultConstructorDoesntParseOctals() throws Exception { | ||
| final Integer result = new GoIntegerDeserializer() | ||
| .deserialize(context.createParser("\"0555\""), context.getDeserializationContext()); | ||
| assertThat(result).isEqualTo(555); | ||
| } | ||
|
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| @Nested | ||
| @TestInstance(PER_CLASS) | ||
| class Applicable { | ||
|
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| @ParameterizedTest(name = "{index}: with '{'\"{0}\": {1}'}' parses as {2}") | ||
| @MethodSource | ||
| void parsesOctals(String fieldName, String content, Integer expected) throws Exception { | ||
| final IntegerFieldsContainer result = context | ||
| .readValue(String.format("{\"%s\": %s}", fieldName, content), IntegerFieldsContainer.class); | ||
| assertThat(result).hasFieldOrPropertyWithValue(fieldName, expected); | ||
| } | ||
|
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| private Stream<Arguments> parsesOctals() { | ||
| return Stream.of("mode", "defaultMode") | ||
| .flatMap(field -> Stream.of( | ||
| Arguments.of(field, "null", null), | ||
| Arguments.of(field, "\"0555\"", 365), | ||
| Arguments.of(field, "\"0o555\"", 365), | ||
| Arguments.of(field, "\"0O555\"", 365), | ||
| Arguments.of(field, "\"555\"", 555), | ||
| Arguments.of(field, "\"0888\"", 888), | ||
| Arguments.of(field, "\"0o12\"", 10), | ||
| Arguments.of(field, "\"0O12\"", 10))); | ||
| } | ||
| } | ||
|
|
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| // | ||
| @Nested | ||
| class NotApplicable { | ||
|
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| @Test | ||
| void parsesOctalsAsDecimal() throws Exception { | ||
| final IntegerFieldsContainer result = context | ||
| .readValue("{\"notApplicable\": \"0555\"}", IntegerFieldsContainer.class); | ||
| assertThat(result).hasFieldOrPropertyWithValue("notApplicable", 555); | ||
| } | ||
|
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| @Test | ||
| void throwsExceptionForInvalidOctal() { | ||
| assertThatThrownBy(() -> context.readValue("{\"mode\": \"0o955\"}", IntegerFieldsContainer.class)) | ||
| .isInstanceOf(InvalidFormatException.class); | ||
| } | ||
|
|
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| @Test | ||
| void throwsExceptionForOctalWithSeparator() { | ||
| assertThatThrownBy(() -> context.readValue("{\"notApplicable\": \"0o555\"}", IntegerFieldsContainer.class)) | ||
| .isInstanceOf(InvalidFormatException.class); | ||
| } | ||
| } | ||
|
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| @Data | ||
| private static final class IntegerFieldsContainer { | ||
| private Integer mode; | ||
| private Integer defaultMode; | ||
| private Integer notApplicable; | ||
| } | ||
| } |
44 changes: 0 additions & 44 deletions
44
...common/src/test/java/io/fabric8/kubernetes/model/jackson/IntegerOctalHandlerUtilTest.java
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