opentelemetry-stdout-tree
An stdout exporter implementation for OpenTelemetry Rust, which prints traces in a tree-like format.
SE my-awesome-books.com GET /authors/:authorId/boo 500 584ms ==================
IN middleware - expressInit 0 0 =
IN middleware - query 0 0 =
IN middleware - session 0 523ms ================
CL pg-pool.connect 0 303ms =========
CL sessions SELECT sess FROM "session" WHERE sid 0 219ms =======
IN middleware - initialize 0 0 =
IN middleware - authenticate 0 0 =
user authenticated ·
IN request handler - /authors/:authorId/books/:boo 0 59ms ==
CL book-service.book-service POST /graphql 200 59ms ==
SE book-service.book.service POST /graphql 200 0 =
IN query 0 0 =
IN field 2 0 =
unknown: something went wrong ·
IN parse 0 0 =
IN validation 0 0 =
Usage
Configure an OpenTelemetry pipeline and start creating spans:
use opentelemetry::trace::Tracer as _;
let tracer = opentelemetry_stdout_tree::new_pipeline().install_simple();
tracer.in_span("main", |_cx| {});Features
The function install automatically configures an asynchronous batch exporter if you enable
either the async-std or tokio feature for the opentelemetry crate. Otherwise spans
will be exported synchronously.
Attribute mapping
The exporter makes use of OpenTelemetry semantic conventions to provide more useful output for known types of spans. Currently supported are:
- HTTP: Shows method, host and path and uses status code to determine errors.
- DB: Shows database name and statement or operation.
- Exception events: shows exception type and message.