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62 changes: 62 additions & 0 deletions
62
src/main/java/com/internetitem/logback/elasticsearch/util/ContextMapWriter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| package com.internetitem.logback.elasticsearch.util; | ||
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| import ch.qos.logback.classic.spi.ILoggingEvent; | ||
| import com.fasterxml.jackson.core.JsonGenerator; | ||
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| import java.io.IOException; | ||
| import java.util.Collection; | ||
| import java.util.HashMap; | ||
| import java.util.Iterator; | ||
| import java.util.Map; | ||
| import java.util.Objects; | ||
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| public class ContextMapWriter { | ||
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| public void writeContextMap(JsonGenerator gen, ILoggingEvent event) throws IOException { | ||
| Object[] arguments = event.getArgumentArray(); | ||
| if (arguments == null || arguments.length == 0) { | ||
| return; | ||
| } | ||
| Object lastElement = arguments[arguments.length - 1]; | ||
| if (lastElement instanceof Map) { | ||
| Map<String, Object> indexes = traverseMap(new HashMap<>(), "context", (Map<Object, Object>)lastElement); | ||
| for (Map.Entry<String, Object> entry : indexes.entrySet()) { | ||
| String key = entry.getKey(); | ||
| Object value = entry.getValue(); | ||
| gen.writeObjectField(key, value); | ||
| } | ||
| } | ||
| } | ||
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| static void traverseObject(Map<String, Object> accumulator, String context, Object object) { | ||
| if (object == null) { | ||
| return; | ||
| } | ||
| if (object instanceof Map) { | ||
| traverseMap(accumulator, context, (Map<Object, Object>) object); | ||
| } else if (object instanceof Collection) { | ||
| traverseCollection(accumulator, context, (Collection) object); | ||
| } else if (object instanceof Number) { | ||
| accumulator.put(context, object); | ||
| } else { | ||
| accumulator.put(context, Objects.toString(object)); | ||
| } | ||
| } | ||
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| static void traverseCollection(Map<String, Object> accumulator, String context, Collection<Object> object) { | ||
| Iterator<Object> iterator = object.iterator(); | ||
| int i = 0; | ||
| while (iterator.hasNext()) { | ||
| Object v = iterator.next(); | ||
| traverseObject(accumulator, context + "." + i, v); | ||
| i++; | ||
| } | ||
| } | ||
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| static Map<String, Object> traverseMap(Map<String, Object> accumulator, String context, Map<Object, Object> object) { | ||
| for (Map.Entry<Object, Object> entry : object.entrySet()) { | ||
| traverseObject(accumulator, context + "." + entry.getKey(), entry.getValue()); | ||
| } | ||
| return accumulator; | ||
| } | ||
| } |
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57 changes: 57 additions & 0 deletions
57
src/test/java/com/internetitem/logback/elasticsearch/util/ContextMapWriterTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| package com.internetitem.logback.elasticsearch.util; | ||
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| import ch.qos.logback.classic.spi.LoggingEvent; | ||
| import com.fasterxml.jackson.core.JsonGenerator; | ||
| import org.junit.Before; | ||
| import org.junit.Test; | ||
| import org.junit.runner.RunWith; | ||
| import org.mockito.Mock; | ||
| import org.mockito.runners.MockitoJUnitRunner; | ||
| import org.testcontainers.shaded.com.google.common.collect.ImmutableMap; | ||
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| import java.io.IOException; | ||
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| import static org.mockito.Mockito.times; | ||
| import static org.mockito.Mockito.verify; | ||
| import static org.mockito.Mockito.verifyZeroInteractions; | ||
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| @RunWith(MockitoJUnitRunner.class) | ||
| public class ContextMapWriterTest { | ||
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| @Mock | ||
| private JsonGenerator jsonGenerator; | ||
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| private ContextMapWriter contextMapWriter; | ||
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| @Before | ||
| public void setup() throws IOException { | ||
| contextMapWriter = new ContextMapWriter(); | ||
| } | ||
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| @Test | ||
| public void should_write_if_last_element_is_map() throws IOException { | ||
| LoggingEvent event = new LoggingEvent(); | ||
| event.setArgumentArray(new Object[] {"123", ImmutableMap.of("test", 123, "test2", "foo")}); | ||
| contextMapWriter.writeContextMap(jsonGenerator, event); | ||
| verify(jsonGenerator, times(1)).writeObjectField("context.test", 123); | ||
| verify(jsonGenerator, times(1)).writeObjectField("context.test2", "foo"); | ||
| } | ||
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| @Test | ||
| public void should_not_write_if_arguments_null_or_empty() throws IOException { | ||
| LoggingEvent event = new LoggingEvent(); | ||
| contextMapWriter.writeContextMap(jsonGenerator, event); | ||
| event.setArgumentArray(new Object[]{}); | ||
| contextMapWriter.writeContextMap(jsonGenerator, event); | ||
| verifyZeroInteractions(jsonGenerator); | ||
| } | ||
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| @Test | ||
| public void should_not_write_if_last_element_not_map() throws IOException { | ||
| LoggingEvent event = new LoggingEvent(); | ||
| event.setArgumentArray(new Object[]{"23", 3243}); | ||
| contextMapWriter.writeContextMap(jsonGenerator, event); | ||
| verifyZeroInteractions(jsonGenerator); | ||
| } | ||
| } |