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| </pre><pre class="rust"><code><span class="kw">use </span><span class="kw">super</span>::<span class="kw">super</span>::BoxFuture; |
| <span class="kw">use super</span>::{grpc_timeout::GrpcTimeout, reconnect::Reconnect, AddOrigin, UserAgent}; |
| <span class="kw">use crate</span>::{body::BoxBody, transport::Endpoint}; |
| <span class="kw">use </span>http::Uri; |
| <span class="kw">use </span>hyper::client::conn::Builder; |
| <span class="kw">use </span>hyper::client::connect::Connection <span class="kw">as </span>HyperConnection; |
| <span class="kw">use </span>hyper::client::service::Connect <span class="kw">as </span>HyperConnect; |
| <span class="kw">use </span>std::{ |
| fmt, |
| task::{Context, Poll}, |
| }; |
| <span class="kw">use </span>tokio::io::{AsyncRead, AsyncWrite}; |
| <span class="kw">use </span>tower::load::Load; |
| <span class="kw">use </span>tower::{ |
| layer::Layer, |
| limit::{concurrency::ConcurrencyLimitLayer, rate::RateLimitLayer}, |
| util::BoxService, |
| ServiceBuilder, ServiceExt, |
| }; |
| <span class="kw">use </span>tower_service::Service; |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">type </span>Request = http::Request<BoxBody>; |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">type </span>Response = http::Response<hyper::Body>; |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>Connection { |
| inner: BoxService<Request, Response, <span class="kw">crate</span>::Error>, |
| } |
| |
| <span class="kw">impl </span>Connection { |
| <span class="kw">fn </span>new<C>(connector: C, endpoint: Endpoint, is_lazy: bool) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>C: Service<Uri> + Send + <span class="lifetime">'static</span>, |
| C::Error: Into<<span class="kw">crate</span>::Error> + Send, |
| C::Future: Unpin + Send, |
| C::Response: AsyncRead + AsyncWrite + HyperConnection + Unpin + Send + <span class="lifetime">'static</span>, |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>settings = Builder::new() |
| .http2_initial_stream_window_size(endpoint.init_stream_window_size) |
| .http2_initial_connection_window_size(endpoint.init_connection_window_size) |
| .http2_only(<span class="bool-val">true</span>) |
| .http2_keep_alive_interval(endpoint.http2_keep_alive_interval) |
| .clone(); |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(val) = endpoint.http2_keep_alive_timeout { |
| settings.http2_keep_alive_timeout(val); |
| } |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(val) = endpoint.http2_keep_alive_while_idle { |
| settings.http2_keep_alive_while_idle(val); |
| } |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(val) = endpoint.http2_adaptive_window { |
| settings.http2_adaptive_window(val); |
| } |
| |
| <span class="kw">let </span>stack = ServiceBuilder::new() |
| .layer_fn(|s| AddOrigin::new(s, endpoint.uri.clone())) |
| .layer_fn(|s| UserAgent::new(s, endpoint.user_agent.clone())) |
| .layer_fn(|s| GrpcTimeout::new(s, endpoint.timeout)) |
| .option_layer(endpoint.concurrency_limit.map(ConcurrencyLimitLayer::new)) |
| .option_layer(endpoint.rate_limit.map(|(l, d)| RateLimitLayer::new(l, d))) |
| .into_inner(); |
| |
| <span class="kw">let </span>connector = HyperConnect::new(connector, settings); |
| <span class="kw">let </span>conn = Reconnect::new(connector, endpoint.uri.clone(), is_lazy); |
| |
| <span class="kw">let </span>inner = stack.layer(conn); |
| |
| <span class="self">Self </span>{ |
| inner: BoxService::new(inner), |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">async fn </span>connect<C>(connector: C, endpoint: Endpoint) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, <span class="kw">crate</span>::Error> |
| <span class="kw">where |
| </span>C: Service<Uri> + Send + <span class="lifetime">'static</span>, |
| C::Error: Into<<span class="kw">crate</span>::Error> + Send, |
| C::Future: Unpin + Send, |
| C::Response: AsyncRead + AsyncWrite + HyperConnection + Unpin + Send + <span class="lifetime">'static</span>, |
| { |
| <span class="self">Self</span>::new(connector, endpoint, <span class="bool-val">false</span>).ready_oneshot().<span class="kw">await |
| </span>} |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>lazy<C>(connector: C, endpoint: Endpoint) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>C: Service<Uri> + Send + <span class="lifetime">'static</span>, |
| C::Error: Into<<span class="kw">crate</span>::Error> + Send, |
| C::Future: Unpin + Send, |
| C::Response: AsyncRead + AsyncWrite + HyperConnection + Unpin + Send + <span class="lifetime">'static</span>, |
| { |
| <span class="self">Self</span>::new(connector, endpoint, <span class="bool-val">true</span>) |
| } |
| } |
| |
| <span class="kw">impl </span>Service<Request> <span class="kw">for </span>Connection { |
| <span class="kw">type </span>Response = Response; |
| <span class="kw">type </span>Error = <span class="kw">crate</span>::Error; |
| <span class="kw">type </span>Future = BoxFuture<<span class="self">Self</span>::Response, <span class="self">Self</span>::Error>; |
| |
| <span class="kw">fn </span>poll_ready(<span class="kw-2">&mut </span><span class="self">self</span>, cx: <span class="kw-2">&mut </span>Context<<span class="lifetime">'_</span>>) -> Poll<<span class="prelude-ty">Result</span><(), <span class="self">Self</span>::Error>> { |
| Service::poll_ready(<span class="kw-2">&mut </span><span class="self">self</span>.inner, cx).map_err(Into::into) |
| } |
| |
| <span class="kw">fn </span>call(<span class="kw-2">&mut </span><span class="self">self</span>, req: Request) -> <span class="self">Self</span>::Future { |
| <span class="self">self</span>.inner.call(req) |
| } |
| } |
| |
| <span class="kw">impl </span>Load <span class="kw">for </span>Connection { |
| <span class="kw">type </span>Metric = usize; |
| |
| <span class="kw">fn </span>load(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Metric { |
| <span class="number">0 |
| </span>} |
| } |
| |
| <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>Connection { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| f.debug_struct(<span class="string">"Connection"</span>).finish() |
| } |
| } |
| </code></pre></div> |
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