Implement reading of simple key-value Logstash JSON Marker attributes #12513
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Ah, Muzzle, I was afraid of that. I have no idea on what is wrong. |
About CI failing, you can refer to https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/CONTRIBUTING.md#troubleshooting-pr-build-failures |
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Thanks, hopefully fixed Muzzle. |
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Marking as draft:
I will finish this later next week. |
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click the "Ready for review" button when you are ready for it to be reviewed, thanks! |
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Supported are MapEntriesAppendingMarker and SingleFieldAppendingMarker (i.e. ObjectAppendingMarker and RawJsonAppendingMarker) only. The attribute value is sent either as boolean, long, double or String or typed-array with respective values. The generic types (Object[], Collection) is converted to String array with values converted with String.valueOf() method. Typically the Logstash markers are added to logs via Markers.append(), Markers.appendEntries(), Markers.appendArray() and Markers.appendRaw() methods. Signed-off-by: Oldřich Jedlička <[email protected]>
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Updated, rebased, ready for review. It looks like the build errors are unrelated (Lettuce). |
laurit
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| try { | ||
| Class.forName("net.logstash.logback.marker.LogstashMarker"); | ||
| } catch (ClassNotFoundException e) { | ||
| return false; | ||
| } | ||
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| try { | ||
| Class.forName("net.logstash.logback.marker.SingleFieldAppendingMarker"); | ||
| } catch (ClassNotFoundException e) { | ||
| return false; | ||
| } | ||
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| try { | ||
| Class.forName("net.logstash.logback.marker.MapEntriesAppendingMarker"); | ||
| } catch (ClassNotFoundException e) { | ||
| return false; | ||
| } |
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you could have all Class.forName calls inside the same try-catch block
laurit
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Nov 6, 2024
| @@ -60,6 +70,8 @@ public final class LoggingEventMapper { | |||
| private static final AttributeKey<List<String>> LOG_BODY_PARAMETERS = | |||
| AttributeKey.stringArrayKey("log.body.parameters"); | |||
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| private static final Cache<Class<?>, Field> valueField = Cache.bounded(20); | |||
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Perhaps ClassValue would serve better for caching the fields?
laurit
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Nov 6, 2024
| } | ||
| } | ||
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| private static void captureKeyValueAttribute( |
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since this method isn't only used for key value attributes any more maybe it should be renamed
laurit
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Nov 6, 2024
| } | ||
| } | ||
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| private static <T> void captureKeyArrayValueAttribute( |
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I think it would be easier to write the converted values to a list.
private static <T> void captureKeyArrayValueAttribute(
AttributesBuilder attributes,
AttributeKey<List<T>> key,
Object array,
Function<Object, T> extractor) {
List<T> list = new ArrayList<>();
int length = java.lang.reflect.Array.getLength(array);
for (int i = 0; i < length; i++) {
Object value = (T) java.lang.reflect.Array.get(array, i);
if (value != null) {
list.add(extractor.apply(value));
}
}
// empty lists are not serialized
if (!list.isEmpty()) {
attributes.put(key, list);
}
}
laurit
reviewed
Nov 6, 2024
| } else if (value instanceof Double || value instanceof Float) { | ||
| attributes.put(keyStr, ((Number) value).doubleValue()); | ||
| } else if (value.getClass().isArray()) { | ||
| if (value instanceof boolean[] || value instanceof Boolean[]) { |
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I think we need a unit test for this method to ensure that all the array variations are tested.
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Supported are
MapEntriesAppendingMarkerandSingleFieldAppendingMarker(i.e.ObjectAppendingMarkerandRawJsonAppendingMarker) only. The attribute value is always a string retrieved by a call totoString()method.Typically the Logstash markers are added to logs via
Markers.append()andMarkers.appendEntries()methods.Closes #12573