feat: Add FileRead and HttpSend (#484)

Signed-off-by: Xuanwo <[email protected]>

Cargo.toml

@@ -14,6 +14,7 @@ repository = "https://github.com/Xuanwo/reqsign"
 anyhow = "1"
 async-trait = "0.1"
 base64 = "0.22"
+bytes = "1"
 chrono = "0.4.35"
 criterion = { version = "0.5", features = ["async_tokio", "html_reports"] }
 dotenv = "0.15"

crates/reqsign/Cargo.toml

@@ -14,6 +14,7 @@ repository.workspace = true
 anyhow.workspace = true
 async-trait.workspace = true
 base64.workspace = true
+bytes.workspace = true
 chrono.workspace = true
 form_urlencoded.workspace = true
 hex.workspace = true

crates/reqsign/src/fs.rs

@@ -0,0 +1,10 @@
+use anyhow::Result;
+
+/// FileRead is used to read the file content entirely in `Vec<u8>`.
+///
+/// This could be used by `Load` to load the credential from the file.
+#[async_trait::async_trait]
+pub trait FileRead {
+    /// Read the file content entirely in `Vec<u8>`.
+    async fn file_read(&self, path: &str) -> Result<Vec<u8>>;
+}

crates/reqsign/src/http.rs

@@ -0,0 +1,12 @@
+use anyhow::Result;
+use bytes::Bytes;
+
+/// HttpSend is used to send http request during the signing process.
+///
+/// For example, fetch IMDS token from AWS or OAuth2 refresh token. This trait is designed
+/// especially for the signer, please don't use it as a general http client.
+#[async_trait::async_trait]
+pub trait HttpSend {
+    /// Send http request and return the response.
+    async fn http_send(&self, req: http::Request<Bytes>) -> Result<http::Response<Bytes>>;
+}

crates/reqsign/src/lib.rs

@@ -17,3 +17,8 @@ pub use sign::*;
 pub mod dirs;
 pub mod hash;
 pub mod time;
+
+mod fs;
+pub use fs::FileRead;
+mod http;
+pub use http::HttpSend;