Add User-Agent

Allow differentiation for our CI/CD.

Author: mxcl

crates/lib/src/client.rs

@@ -1,3 +1,5 @@
+use std::env;
+
 use reqwest::{Client, ClientBuilder};
 
 #[cfg(not(any(target_os = "macos", target_os = "windows")))]
@@ -12,10 +14,27 @@ pub fn build_client() -> Result<Client, Box<dyn std::error::Error>> {
         builder = builder.add_root_certificate(cert);
     }
 
+    builder = builder.user_agent(get_user_agent());
+
     Ok(builder.build()?)
 }
 
 #[cfg(any(target_os = "macos", target_os = "windows"))]
 pub fn build_client() -> Result<Client, Box<dyn std::error::Error>> {
-    Ok(ClientBuilder::new().build()?)
+    Ok(ClientBuilder::new()
+        .user_agent(get_user_agent())
+        .build()?)
+}
+
+fn get_user_agent() -> String {
+    let version = env!("CARGO_PKG_VERSION");
+    let os = std::env::consts::OS;
+    let arch = std::env::consts::ARCH;
+    let group = env::var("PKGX_USER_AGENT_GROUP");
+    let name = if group.is_ok() {
+        format!("pkgx[{}]", group.unwrap())
+    } else {
+        "pkgx".to_string()
+    };
+    format!("{name}/{version} ({os}; {arch})")
 }