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Add support for percentage-based thresholds (#23)
* Add support for percentage-based thresholds * Add unit test and comments
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82 changes: 82 additions & 0 deletions
82
anomalysubscription/src/main/java/software/amazon/ce/anomalysubscription/Utils.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| package software.amazon.ce.anomalysubscription; | ||
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| import com.fasterxml.jackson.annotation.JsonAutoDetect; | ||
| import com.fasterxml.jackson.annotation.JsonInclude; | ||
| import com.fasterxml.jackson.annotation.PropertyAccessor; | ||
| import com.fasterxml.jackson.core.JsonProcessingException; | ||
| import com.fasterxml.jackson.databind.JsonMappingException; | ||
| import com.fasterxml.jackson.databind.DeserializationFeature; | ||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import com.fasterxml.jackson.databind.ObjectWriter; | ||
| import com.fasterxml.jackson.databind.PropertyNamingStrategy; | ||
| import com.fasterxml.jackson.databind.introspect.AnnotatedClass; | ||
| import com.fasterxml.jackson.databind.introspect.JacksonAnnotationIntrospector; | ||
| import com.google.common.collect.ImmutableMap; | ||
|
|
||
| import lombok.experimental.UtilityClass; | ||
| import software.amazon.awssdk.services.costexplorer.model.CostCategoryValues; | ||
| import software.amazon.awssdk.services.costexplorer.model.DimensionValues; | ||
| import software.amazon.awssdk.services.costexplorer.model.Expression; | ||
| import software.amazon.awssdk.services.costexplorer.model.TagValues; | ||
| import software.amazon.cloudformation.exceptions.CfnInvalidRequestException; | ||
|
|
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| import java.util.Map; | ||
|
|
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| @UtilityClass | ||
| public class Utils { | ||
| static final ObjectMapper OBJECT_MAPPER = new ObjectMapper(); | ||
| static ObjectWriter objectWriter; | ||
|
|
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| static { | ||
| OBJECT_MAPPER.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, true); | ||
|
|
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| // Use upper case in JSON key | ||
| OBJECT_MAPPER.setPropertyNamingStrategy(new PropertyNamingStrategy.UpperCamelCaseStrategy()); | ||
|
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| // SDK model has private field without getter/setter, make Jackson to use field directly | ||
| OBJECT_MAPPER.setVisibility(PropertyAccessor.FIELD, JsonAutoDetect.Visibility.ANY); | ||
|
|
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| // Skip null or empty values when serializing to JSON | ||
| OBJECT_MAPPER.setSerializationInclusion(JsonInclude.Include.NON_NULL); | ||
| OBJECT_MAPPER.setSerializationInclusion(JsonInclude.Include.NON_EMPTY); | ||
|
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| // SDK model has no default constructor, and build class is private. | ||
| // Add custom builder so Jackson can deserialize the class. | ||
| final Map<Class<?>, Class<?>> buildersMap = ImmutableMap.of( | ||
| Expression.class, Expression.serializableBuilderClass(), | ||
| DimensionValues.class, DimensionValues.serializableBuilderClass(), | ||
| TagValues.class, TagValues.serializableBuilderClass(), | ||
| CostCategoryValues.class, CostCategoryValues.serializableBuilderClass() | ||
| ); | ||
| OBJECT_MAPPER.setAnnotationIntrospector(new JacksonAnnotationIntrospector() { | ||
| private static final long serialVersionUID = 1L; | ||
|
|
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| @Override | ||
| public Class<?> findPOJOBuilder(AnnotatedClass ac) { | ||
| if (buildersMap.containsKey(ac.getRawType())) { | ||
| return buildersMap.get(ac.getRawType()); | ||
| } | ||
| return super.findPOJOBuilder(ac); | ||
| } | ||
| }); | ||
| objectWriter = OBJECT_MAPPER.writerWithDefaultPrettyPrinter(); | ||
| } | ||
|
|
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| public static Expression toExpressionFromJson(String expressionJson) { | ||
| try { | ||
| return OBJECT_MAPPER.readValue(expressionJson, Expression.class); | ||
| } catch (JsonMappingException e) { | ||
| throw new CfnInvalidRequestException(String.format("Unsupported JSON '%s' for Expression", expressionJson), e); | ||
| } catch (Exception e) { | ||
| throw new CfnInvalidRequestException(String.format("Invalid JSON '%s' for Expression", expressionJson), e); | ||
| } | ||
| } | ||
|
|
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| public static String toJson(Expression expression) { | ||
| try { | ||
| return objectWriter.writeValueAsString(expression); | ||
| } catch (JsonProcessingException e) { | ||
| throw new RuntimeException(e); | ||
| } | ||
| } | ||
| } |
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