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89 changes: 89 additions & 0 deletions
89
...orter/src/main/java/com/azure/monitor/opentelemetry/exporter/implementation/Mappings.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| // Copyright (c) Microsoft Corporation. All rights reserved. | ||
| // Licensed under the MIT License. | ||
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|
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| package com.azure.monitor.opentelemetry.exporter.implementation; | ||
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| import com.azure.core.util.logging.ClientLogger; | ||
| import com.azure.monitor.opentelemetry.exporter.implementation.builders.AbstractTelemetryBuilder; | ||
| import com.azure.monitor.opentelemetry.exporter.implementation.utils.Trie; | ||
| import io.opentelemetry.api.common.AttributeKey; | ||
| import io.opentelemetry.api.common.AttributeType; | ||
| import io.opentelemetry.api.common.Attributes; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
| import reactor.util.annotation.Nullable; | ||
|
|
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| class Mappings { | ||
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| private static final ClientLogger logger = new ClientLogger(Mappings.class); | ||
| private static final Set<AttributeType> unexpectedTypesLogged = ConcurrentHashMap.newKeySet(); | ||
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| private final Map<String, MappingsBuilder.ExactMapping> exactMappings; | ||
| private final Trie<MappingsBuilder.PrefixMapping> prefixMappings; | ||
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| Mappings( | ||
| Map<String, MappingsBuilder.ExactMapping> exactMappings, | ||
| Trie<MappingsBuilder.PrefixMapping> prefixMappings) { | ||
| this.exactMappings = exactMappings; | ||
| this.prefixMappings = prefixMappings; | ||
| } | ||
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| void map(Attributes attributes, AbstractTelemetryBuilder telemetryBuilder) { | ||
| attributes.forEach( | ||
| (attributeKey, value) -> { | ||
| map(telemetryBuilder, attributeKey, value); | ||
| }); | ||
| } | ||
|
|
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| private void map( | ||
| AbstractTelemetryBuilder telemetryBuilder, AttributeKey attributeKey, Object value) { | ||
| String key = attributeKey.getKey(); | ||
| MappingsBuilder.ExactMapping exactMapping = exactMappings.get(key); | ||
| if (exactMapping != null) { | ||
| exactMapping.map(telemetryBuilder, value); | ||
| return; | ||
| } | ||
| MappingsBuilder.PrefixMapping prefixMapping = prefixMappings.getOrNull(key); | ||
| if (prefixMapping != null) { | ||
| prefixMapping.map(telemetryBuilder, key, value); | ||
| return; | ||
| } | ||
| String val = convertToString(value, attributeKey.getType()); | ||
| if (val != null) { | ||
| telemetryBuilder.addProperty(attributeKey.getKey(), val); | ||
| } | ||
| } | ||
|
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| @Nullable | ||
| private static String convertToString(Object value, AttributeType type) { | ||
| switch (type) { | ||
| case STRING: | ||
| case BOOLEAN: | ||
| case LONG: | ||
| case DOUBLE: | ||
| return String.valueOf(value); | ||
| case STRING_ARRAY: | ||
| case BOOLEAN_ARRAY: | ||
| case LONG_ARRAY: | ||
| case DOUBLE_ARRAY: | ||
| return join((List<?>) value); | ||
| } | ||
| if (unexpectedTypesLogged.add(type)) { | ||
| logger.warning("unexpected attribute type: {}", type); | ||
| } | ||
| return null; | ||
| } | ||
|
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| static <T> String join(List<T> values) { | ||
| StringBuilder sb = new StringBuilder(); | ||
| for (Object val : values) { | ||
| if (sb.length() > 0) { | ||
| sb.append(", "); | ||
| } | ||
| sb.append(val); | ||
| } | ||
| return sb.toString(); | ||
| } | ||
| } |
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