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Add logs to stdout example #1735

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May 10, 2024
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1 change: 1 addition & 0 deletions opentelemetry-stdout/CHANGELOG.md
Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@
- Fix StatusCode in stdout exporter [#1454](https://github.com/open-telemetry/opentelemetry-rust/pull/1454)
- Add missing event timestamps [#1391](https://github.com/open-telemetry/opentelemetry-rust/pull/1391)
- Adjusted `chrono` features to reduce number of transitive dependencies. [#1569](https://github.com/open-telemetry/opentelemetry-rust/pull/1569)
- The default feature now includes logs, metrics and trace.

## v0.2.0

Expand Down
5 changes: 4 additions & 1 deletion opentelemetry-stdout/Cargo.toml
Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,7 @@ rust-version = "1.65"
default = ["trace", "metrics", "logs"]
trace = ["opentelemetry/trace", "opentelemetry_sdk/trace", "futures-util"]
metrics = ["async-trait", "opentelemetry/metrics", "opentelemetry_sdk/metrics"]
logs = ["opentelemetry/logs", "opentelemetry_sdk/logs", "async-trait", "thiserror"]
logs = ["opentelemetry/logs", "opentelemetry_sdk/logs", "async-trait", "thiserror", "opentelemetry_sdk/logs_level_enabled"]

[dependencies]
async-trait = { workspace = true, optional = true }
Expand All @@ -35,4 +35,7 @@ ordered-float = { workspace = true }
[dev-dependencies]
opentelemetry = { path = "../opentelemetry", features = ["metrics"] }
opentelemetry_sdk = { path = "../opentelemetry-sdk", features = ["rt-tokio", "metrics"] }
opentelemetry-appender-tracing = { version = "0.3.0", path = "../opentelemetry-appender-tracing"}
tracing = { workspace = true, features = ["std"]}
tracing-subscriber = { workspace = true, features = ["registry", "std"] }
tokio = { workspace = true, features = ["full"] }
38 changes: 38 additions & 0 deletions opentelemetry-stdout/examples/basic.rs
Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,21 @@ fn init_metrics() {
global::set_meter_provider(provider);
}

#[cfg(feature = "logs")]
fn init_logs() -> opentelemetry_sdk::logs::LoggerProvider {
use opentelemetry_appender_tracing::layer;
use opentelemetry_sdk::logs::LoggerProvider;
use tracing_subscriber::prelude::*;

let exporter = opentelemetry_stdout::LogExporter::default();
let provider: LoggerProvider = LoggerProvider::builder()
.with_simple_exporter(exporter)
.build();
let layer = layer::OpenTelemetryTracingBridge::new(&provider);
tracing_subscriber::registry().with(layer).init();
provider
}

#[cfg(feature = "trace")]
fn emit_span() {
let tracer = global::tracer("stdout-test");
Expand All @@ -50,6 +65,12 @@ fn emit_metrics() {
c.add(1, &[KeyValue::new("test_key", "test_value")]);
}

#[cfg(feature = "logs")]
fn emit_log() {
use tracing::error;
error!(name: "my-event-name", target: "my-system", event_id = 20, user_name = "otel", user_email = "otel@opentelemetry.io");
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
#[cfg(feature = "trace")]
Expand All @@ -58,9 +79,23 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
#[cfg(feature = "metrics")]
init_metrics();

#[cfg(feature = "logs")]
let logger_provider = init_logs();

#[cfg(feature = "logs")]
emit_log();

println!(
"======================================================================================"
);

#[cfg(feature = "trace")]
emit_span();

println!(
"======================================================================================"
);

#[cfg(feature = "metrics")]
emit_metrics();

Expand All @@ -70,5 +105,8 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
#[cfg(feature = "metrics")]
global::shutdown_meter_provider();

#[cfg(feature = "logs")]
drop(logger_provider);

Ok(())
}
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