Add OTLP Service Name Environment Variable (#2076)

* Adding Service Name Environment variable for https://github.com/huggingface/text-generation-inference/issues/2069

* Update Docs

* Update README.md

* Update Launcher Docs

* Update Launcher Docs
Removing Option

README.md

@@ -153,7 +153,8 @@ this will impact performance.
 ### Distributed Tracing
 
 `text-generation-inference` is instrumented with distributed tracing using OpenTelemetry. You can use this feature
-by setting the address to an OTLP collector with the `--otlp-endpoint` argument.
+by setting the address to an OTLP collector with the `--otlp-endpoint` argument. The default service name can be 
+overridden with the `--otlp-service-name` argument
 
 ### Architecture
 

docs/source/architecture.md

@@ -70,6 +70,8 @@ Options:
           [env: JSON_OUTPUT=]
       --otlp-endpoint <OTLP_ENDPOINT>
           [env: OTLP_ENDPOINT=]
+      --otlp-service-name <OTLP_SERVICE_NAME>
+          [env: OTLP_SERVICE_NAME=]
       --cors-allow-origin <CORS_ALLOW_ORIGIN>
           [env: CORS_ALLOW_ORIGIN=]
       --ngrok
@@ -138,6 +140,8 @@ Serve's command line parameters on the TGI repository are these:
 │ --logger-level                                   TEXT                        [default: INFO]             │
 │ --json-output          --no-json-output                                      [default: no-json-output]   │
 │ --otlp-endpoint                                  TEXT                        [default: None]             │
+│ --otlp-service-name                              TEXT                        [default:                   │
+│                                                                              text-generation-inference...│
 │ --help                                                                       Show this message and exit. │
 ╰──────────────────────────────────────────────────────────────────────────────────────────────────────────╯
 ```

docs/source/basic_tutorials/launcher.md

@@ -336,6 +336,13 @@ Options:
       --otlp-endpoint <OTLP_ENDPOINT>
           [env: OTLP_ENDPOINT=]
 
+```
+## OTLP_SERVICE_NAME
+```shell
+      --otlp-service-name <OTLP_SERVICE_NAME>
+          [env: OTLP_SERVICE_NAME=]
+          [default: text-generation-inference.router]
+
 ```
 ## CORS_ALLOW_ORIGIN
 ```shell

launcher/src/main.rs

@@ -413,6 +413,9 @@ struct Args {
     #[clap(long, env)]
     otlp_endpoint: Option<String>,
 
+    #[clap(default_value = "text-generation-inference.router", long, env)]
+    otlp_service_name: String,
+
     #[clap(long, env)]
     cors_allow_origin: Vec<String>,
     #[clap(long, env)]
@@ -483,6 +486,7 @@ fn shard_manager(
     max_batch_size: Option<usize>,
     max_input_tokens: usize,
     otlp_endpoint: Option<String>,
+    otlp_service_name: String,
     log_level: LevelFilter,
     status_sender: mpsc::Sender<ShardStatus>,
     shutdown: Arc<AtomicBool>,
@@ -548,12 +552,16 @@ fn shard_manager(
         (None, Some(factor)) => Some((RopeScaling::Linear, factor)),
     };
 
-    // OpenTelemetry
+    // OpenTelemetry Endpoint
     if let Some(otlp_endpoint) = otlp_endpoint {
         shard_args.push("--otlp-endpoint".to_string());
         shard_args.push(otlp_endpoint);
     }
 
+    // OpenTelemetry Service Name
+    shard_args.push("--otlp-service-name".to_string());
+    shard_args.push(otlp_service_name);
+
     // In case we use sliding window, we may ignore the sliding in flash for some backends depending on the parameter.
     shard_args.push("--max-input-tokens".to_string());
     shard_args.push(max_input_tokens.to_string());
@@ -1035,6 +1043,7 @@ fn spawn_shards(
         let shutdown = shutdown.clone();
         let shutdown_sender = shutdown_sender.clone();
         let otlp_endpoint = args.otlp_endpoint.clone();
+        let otlp_service_name = args.otlp_service_name.clone();
         let quantize = args.quantize;
         let speculate = args.speculate;
         let dtype = args.dtype;
@@ -1074,6 +1083,7 @@ fn spawn_shards(
                 max_batch_size,
                 max_input_tokens,
                 otlp_endpoint,
+                otlp_service_name,
                 max_log_level,
                 status_sender,
                 shutdown,
@@ -1207,6 +1217,12 @@ fn spawn_webserver(
         router_args.push(otlp_endpoint);
     }
 
+    // OpenTelemetry
+    let otlp_service_name = args.otlp_service_name;
+    router_args.push("--otlp-service-name".to_string());
+    router_args.push(otlp_service_name);
+
+
     // CORS origins
     for origin in args.cors_allow_origin.into_iter() {
         router_args.push("--cors-allow-origin".to_string());

router/src/main.rs

@@ -65,6 +65,8 @@ struct Args {
     json_output: bool,
     #[clap(long, env)]
     otlp_endpoint: Option<String>,
+    #[clap(default_value = "text-generation-inference.router", long, env)]
+    otlp_service_name: String,
     #[clap(long, env)]
     cors_allow_origin: Option<Vec<String>>,
     #[clap(long, env)]
@@ -107,6 +109,7 @@ async fn main() -> Result<(), RouterError> {
         validation_workers,
         json_output,
         otlp_endpoint,
+        otlp_service_name,
         cors_allow_origin,
         ngrok,
         ngrok_authtoken,
@@ -117,7 +120,7 @@ async fn main() -> Result<(), RouterError> {
     } = args;
 
     // Launch Tokio runtime
-    init_logging(otlp_endpoint, json_output);
+    init_logging(otlp_endpoint, otlp_service_name, json_output);
 
     // Validate args
     if max_input_tokens >= max_total_tokens {
@@ -367,10 +370,11 @@ async fn main() -> Result<(), RouterError> {
 
 /// Init logging using env variables LOG_LEVEL and LOG_FORMAT:
 ///     - otlp_endpoint is an optional URL to an Open Telemetry collector
+///     - otlp_service_name service name to appear in APM
 ///     - LOG_LEVEL may be TRACE, DEBUG, INFO, WARN or ERROR (default to INFO)
 ///     - LOG_FORMAT may be TEXT or JSON (default to TEXT)
 ///     - LOG_COLORIZE may be "false" or "true" (default to "true" or ansi supported platforms)
-fn init_logging(otlp_endpoint: Option<String>, json_output: bool) {
+fn init_logging(otlp_endpoint: Option<String>, otlp_service_name: String, json_output: bool) {
     let mut layers = Vec::new();
 
     // STDOUT/STDERR layer
@@ -401,7 +405,7 @@ fn init_logging(otlp_endpoint: Option<String>, json_output: bool) {
                 trace::config()
                     .with_resource(Resource::new(vec![KeyValue::new(
                         "service.name",
-                        "text-generation-inference.router",
+                        otlp_service_name,
                     )]))
                     .with_sampler(Sampler::AlwaysOn),
             )

server/text_generation_server/cli.py

@@ -42,6 +42,7 @@ def serve(
     logger_level: str = "INFO",
     json_output: bool = False,
     otlp_endpoint: Optional[str] = None,
+    otlp_service_name: str = "text-generation-inference.server",
     max_input_tokens: Optional[int] = None,
 ):
     if sharded:
@@ -76,7 +77,7 @@ def serve(
 
     # Setup OpenTelemetry distributed tracing
     if otlp_endpoint is not None:
-        setup_tracing(shard=os.getenv("RANK", 0), otlp_endpoint=otlp_endpoint)
+        setup_tracing(otlp_service_name=otlp_service_name, otlp_endpoint=otlp_endpoint)
 
     # Downgrade enum into str for easier management later on
     quantize = None if quantize is None else quantize.value

server/text_generation_server/tracing.py

@@ -54,10 +54,8 @@ class UDSOpenTelemetryAioServerInterceptor(OpenTelemetryAioServerInterceptor):
         )
 
 
-def setup_tracing(shard: int, otlp_endpoint: str):
+def setup_tracing(otlp_service_name: str, otlp_endpoint: str):
-    resource = Resource.create(
+    resource = Resource.create(attributes={"service.name": otlp_service_name})
-        attributes={"service.name": f"text-generation-inference.server-{shard}"}
-    )
     span_exporter = OTLPSpanExporter(endpoint=otlp_endpoint, insecure=True)
     span_processor = BatchSpanProcessor(span_exporter)