LikeTheSalad
commented
4 days ago Hi!
OpenTelemetry has 3 types of data, called signals, which are Traces, Metrics and Logs.
Trace id and Span id attrs are only present when there's a Span involved, and application crashes are sent using Logs instead.
However, Logs can get the span and trace id attrs if they are created inside a Span, for example:
// This function only sends a log and there are no spans involved, so the log won't get any span id nor trace id info:
fun sendLogOnly() {
val openTelemetry: OpenTelemetry
openTelemetry.logsBridge.get("myLogger").logRecordBuilder().setBody("Log body").emit()
}
// This other function creates a log with trace and span id:
fun sendLogWithTraceInfo() {
val openTelemetry: OpenTelemetry
val span = openTelemetry.getTracer("myTracer").spanBuilder("My Span").startSpan()
span.makeCurrent().use {
// This log is created inside a span, so it will get the trace attrs.
openTelemetry.logsBridge.get("myLogger").logRecordBuilder().setBody("Log body").emit()
}
span.end()
}For more info on how to create spans and logs, I'd suggest taking a look at the Java docs: https://opentelemetry.io/docs/languages/java/
OTel Android sends crashes as Log signals, which means that there has to be an active span in the same thread where the crash occurred for it to contain trace attrs. So you will probably get some crashes with this info and some others without it. In theory, the more spans you have around your app, the more chances there will be of crashes containing this info.
tech-ind-02
Hello,
I am new to otel and android both. After running demo app i have followed steps to make application crash.
here i am getting logs in otel collector but not getting trace id and span id for same.
Pls help !!!