fix(exmaples): actix web should use TokioCurrentThread as runtime (open-telemetry#734)

Author: TommyCpp

examples/actix-http/Cargo.toml

@@ -6,7 +6,7 @@ publish = false
 
 [dependencies]
 opentelemetry = { path = "../../opentelemetry", features = ["rt-tokio"] }
-opentelemetry-jaeger = { path = "../../opentelemetry-jaeger", features = ["reqwest_collector_client", "rt-tokio"] }
+opentelemetry-jaeger = { path = "../../opentelemetry-jaeger", features = ["reqwest_collector_client", "rt-tokio-current-thread"] }
 thrift = "0.13"
 actix-web = "4.0.0-beta.4"
 actix-service = "2.0.0-beta.5"

examples/actix-http/src/main.rs

@@ -1,6 +1,7 @@
 use actix_service::Service;
 use actix_web::middleware::Logger;
 use actix_web::{web, App, HttpServer};
+use opentelemetry::global::shutdown_tracer_provider;
 use opentelemetry::trace::TraceError;
 use opentelemetry::{global, sdk::trace as sdktrace};
 use opentelemetry::{
@@ -12,7 +13,7 @@ fn init_tracer() -> Result<sdktrace::Tracer, TraceError> {
     opentelemetry_jaeger::new_pipeline()
         .with_collector_endpoint("http://127.0.0.1:14268/api/traces")
         .with_service_name("trace-http-demo")
-        .install_batch(opentelemetry::runtime::Tokio)
+        .install_batch(opentelemetry::runtime::TokioCurrentThread)
 }
 
 async fn index() -> &'static str {
@@ -45,5 +46,10 @@ async fn main() -> std::io::Result<()> {
     .bind("127.0.0.1:8088")
     .unwrap()
     .run()
-    .await
+    .await?;
+
+    // wait until all pending spans get exported.
+    shutdown_tracer_provider();
+
+    Ok(())
 }