Attribute Macro http_from_stream 

#[http_from_stream]

Wraps function body with HTTP stream processing.

This attribute macro generates code that wraps the function body with a check to see if data can be read from an HTTP stream. The function body is only executed if data is successfully read from the stream.

Arguments

• TokenStream: Optional variable name to store the read request data.
• TokenStream: The function item to be modified

Returns

Returns a TokenStream containing the modified function with HTTP stream processing logic.

Examples

Using no parameters:

use hyperlane::*;
use hyperlane_macros::*;

#[route("/http_from_stream")]
struct HttpFromStreamTest;

impl ServerHook for HttpFromStreamTest {
    async fn new(_ctx: &mut Context) -> Self {
        Self
    }

    #[http_from_stream]
    async fn handle(self, ctx: &mut Context) {}
}

Using with variable name:

use hyperlane::*;
use hyperlane_macros::*;

#[route("/http_from_stream")]
struct HttpFromStreamTest;

impl ServerHook for HttpFromStreamTest {
    async fn new(_ctx: &mut Context) -> Self {
        Self
    }

    #[http_from_stream(_request)]
    async fn handle(self, ctx: &mut Context) {}
}

impl HttpFromStreamTest {
    #[http_from_stream(_request)]
    async fn http_from_stream_with_ref_self(&self, ctx: &mut Context) {}
}

#[http_from_stream]
async fn standalone_http_from_stream_handler(ctx: &mut Context) {}