opencensus annotation is incompatible with jaeger logs

[zheyiyi]

I use span.addAnnotation and hope it can add key-value logs in the jaeger log, but it show the result on the following graph， anyone know how to add logs in jaeger UI by opencensus library？

        Map<String, AttributeValue> logs = new HashMap<>(6);

        logs.put("logger", AttributeValue.stringAttributeValue(event.getLoggerName()));
        logs.put("level",  AttributeValue.stringAttributeValue(event.getLevel().toString()));
        logs.put("thread",  AttributeValue.stringAttributeValue(event.getThreadName()));
        logs.put("message",  AttributeValue.stringAttributeValue(event.getFormattedMessage()));
        logs.put("timeStamp", AttributeValue.longAttributeValue(event.getTimeStamp()));
        span.addAnnotation(Annotation.fromDescriptionAndAttributes("logs", logs));

       

[songy23]

OpenCensus span attributes will be converted to Jaeger tags, and timed events will be converted to Jaeger logs: https://github.com/census-instrumentation/opencensus-java/blob/48106bca7df7bf547fc857afd835be3a7a659253/exporters/trace/jaeger/src/main/java/io/opencensus/exporter/trace/jaeger/JaegerExporterHandler.java#L265-L322

So if you want to add custom Jaeger tags, you should use span.addAnnotation or span.addMessageEvent.