refactor: move api-key header name into API_KEY_HEADER const

Made-with: Cursor

Author: Cursor Agent

src/auth.rs

@@ -2,6 +2,9 @@ use tonic::metadata::MetadataKey;
 use tonic::service::Interceptor;
 use tonic::{Request, Status};
 
+/// Header name used for API key / token authentication.
+pub const API_KEY_HEADER: &str = "api-key";
+
 pub struct MetadataInterceptor {
     api_key: Option<String>,
     custom_headers: Vec<(String, String)>,
@@ -20,7 +23,7 @@ impl Interceptor for MetadataInterceptor {
     fn call(&mut self, mut req: Request<()>) -> anyhow::Result<Request<()>, Status> {
         if let Some(api_key) = &self.api_key {
             req.metadata_mut().insert(
-                "api-key",
+                API_KEY_HEADER,
                 api_key.parse().map_err(|_| {
                     Status::invalid_argument(format!("Malformed API key or token: {api_key}"))
                 })?,

src/qdrant_client/snapshot.rs

@@ -4,7 +4,7 @@ use tonic::codegen::InterceptedService;
 use tonic::transport::Channel;
 use tonic::Status;
 
-use crate::auth::MetadataInterceptor;
+use crate::auth::{MetadataInterceptor, API_KEY_HEADER};
 use crate::qdrant::snapshots_client::SnapshotsClient;
 use crate::qdrant::{
     CreateFullSnapshotRequest, CreateSnapshotRequest, CreateSnapshotResponse,
@@ -167,7 +167,7 @@ impl Qdrant {
         let client = reqwest::Client::new();
         let mut request = client.get(&url);
         if let Some(api_key) = &self.config.api_key {
-            request = request.header("api-key", api_key.as_str());
+            request = request.header(API_KEY_HEADER, api_key.as_str());
         }
         for (key, value) in &self.config.custom_headers {
             request = request.header(key.as_str(), value.as_str());