feat(pipeline): send encoded v0.4 trace payloads

README.md

@@ -6,3 +6,18 @@ Node.js bindings for [libdatadog](https://github.com/DataDog/libdatadog).
 
 This project is currently meant to be used only by [dd-trace-js](https://github.com/DataDog/dd-trace-js)
 and installing it directly is not supported at the moment.
+
+## Pipeline
+
+`pipelineApiVersion` is `1` when the package provides encoded trace and agentless pipeline APIs. Consumers can inspect
+this value without loading a native or WASM addon; an absent or older value must use the legacy pipeline.
+
+`WasmSpanState#sendEncodedTraces(data)` accepts an owned `Uint8Array` containing a v0.4 MessagePack array32 payload.
+It forwards the payload directly when no configured feature needs span objects. Native stats decode it for aggregation,
+and alternate output formats decode it before transforming and sending it through the configured exporter.
+Only one trace send may be active per state; an overlapping call rejects with an `already in flight` error.
+
+`WasmSpanState#setAgentlessEndpoint(url, apiKey)` selects direct trace intake before the first send.
+The binding reads obfuscation settings from Node.js `process.env` through its environment capability;
+libdatadog normalizes and obfuscates spans before emitting JSON to the configured intake. Structured
+AppSec metadata remains attached to the emitted spans.

crates/capabilities/Cargo.toml

@@ -15,7 +15,7 @@ http = "1"
 bytes = "1.4"
 futures-core = "0.3"
 anyhow = "1"
-libdd-capabilities = { git = "https://github.com/DataDog/libdatadog.git", rev = "3081603d3c74f209be4e3be951f78a1a7469397f" }
+libdd-capabilities = { git = "https://github.com/DataDog/libdatadog.git", rev = "4e4cf372d4e461d43d9061324ecf60946d5dae53" }
 
 [dev-dependencies]
 wasm-bindgen-test = "0.3"

crates/capabilities/src/http.rs

@@ -59,6 +59,10 @@ impl HttpClientCapability for WasmHttpClient {
         Self
     }
 
+    fn new_without_connection_pooling() -> Self {
+        Self
+    }
+
     #[allow(clippy::manual_async_fn)]
     fn request(
         &self,

crates/capabilities/src/lib.rs

@@ -65,6 +65,10 @@ impl HttpClientCapability for WasmCapabilities {
         Self::new()
     }
 
+    fn new_without_connection_pooling() -> Self {
+        Self::new()
+    }
+
     fn request(
         &self,
         req: ::http::Request<::bytes::Bytes>,