Examples with EventTemplateAdditionalField org.apache.logging.log4j.layout.template.json.JsonTemplateLayout.EventTemplateAdditionalField used on opensource projects

Example 1 with EventTemplateAdditionalField

use of org.apache.logging.log4j.layout.template.json.JsonTemplateLayout.EventTemplateAdditionalField in project logging-log4j2 by apache.

the class JsonTemplateLayoutTest method test_event_template_additional_fields.

@Test
void test_event_template_additional_fields() {
    // Create the log event.
    final SimpleMessage message = new SimpleMessage("Hello, World!");
    final RuntimeException exception = NonAsciiUtf8MethodNameContainingException.INSTANCE;
    final Level level = Level.ERROR;
    final LogEvent logEvent = Log4jLogEvent.newBuilder().setLoggerName(LOGGER_NAME).setLevel(level).setMessage(message).setThrown(exception).build();
    // Create the event template.
    final String eventTemplate = "{}";
    // Create the layout.
    final EventTemplateAdditionalField[] additionalFields = { EventTemplateAdditionalField.newBuilder().setKey("number").setValue("1").setFormat(EventTemplateAdditionalField.Format.JSON).build(), EventTemplateAdditionalField.newBuilder().setKey("string").setValue("foo").build(), EventTemplateAdditionalField.newBuilder().setKey("level").setValue("{\"$resolver\": \"level\", \"field\": \"name\"}").setFormat(EventTemplateAdditionalField.Format.JSON).build() };
    final JsonTemplateLayout layout = JsonTemplateLayout.newBuilder().setConfiguration(CONFIGURATION).setStackTraceEnabled(true).setEventTemplate(eventTemplate).setEventTemplateAdditionalFields(additionalFields).build();
    // Check the serialized event.
    usingSerializedLogEventAccessor(layout, logEvent, accessor -> {
        assertThat(accessor.getInteger("number")).isEqualTo(1);
        assertThat(accessor.getString("string")).isEqualTo("foo");
        assertThat(accessor.getString("level")).isEqualTo(level.name());
    });
}

Example 2 with EventTemplateAdditionalField

use of org.apache.logging.log4j.layout.template.json.JsonTemplateLayout.EventTemplateAdditionalField in project logging-log4j2 by apache.

the class EventAdditionalFieldInterceptor method processTemplateBeforeResolverInjection.

@Override
public Object processTemplateBeforeResolverInjection(final EventResolverContext context, final Object node) {
    // Short-circuit if there are no additional fields.
    final EventTemplateAdditionalField[] additionalFields = context.getEventTemplateAdditionalFields();
    if (additionalFields.length == 0) {
        return node;
    }
    // Check that the root is an object node.
    final Map<String, Object> objectNode;
    try {
        @SuppressWarnings("unchecked") final Map<String, Object> map = (Map<String, Object>) node;
        objectNode = map;
    } catch (final ClassCastException error) {
        final String message = String.format("was expecting an object to merge additional fields: %s", node.getClass().getName());
        throw new IllegalArgumentException(message);
    }
    // Merge additional fields.
    for (final EventTemplateAdditionalField additionalField : additionalFields) {
        final String additionalFieldKey = additionalField.getKey();
        final Object additionalFieldValue;
        final EventTemplateAdditionalField.Format additionalFieldFormat = additionalField.getFormat();
        if (EventTemplateAdditionalField.Format.STRING.equals(additionalFieldFormat)) {
            additionalFieldValue = additionalField.getValue();
        } else if (EventTemplateAdditionalField.Format.JSON.equals(additionalFieldFormat)) {
            try {
                additionalFieldValue = JsonReader.read(additionalField.getValue());
            } catch (final Exception error) {
                final String message = String.format("failed reading JSON provided by additional field: %s", additionalFieldKey);
                throw new IllegalArgumentException(message, error);
            }
        } else {
            final String message = String.format("unknown format %s for additional field: %s", additionalFieldKey, additionalFieldFormat);
            throw new IllegalArgumentException(message);
        }
        objectNode.put(additionalFieldKey, additionalFieldValue);
    }
    // Return the modified node.
    return node;
}