41 lines
2.0 KiB
Rust
41 lines
2.0 KiB
Rust
use axum::{body::Body, http::Request, middleware, Router};
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use tower_http::trace::{DefaultOnFailure, DefaultOnRequest, DefaultOnResponse, TraceLayer};
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use tracing::{info_span, Level};
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use crate::{
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error_middleware::normalize_error_response,
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request_context::{attach_request_context, resolve_request_id},
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response_headers::propagate_request_id_header,
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state::AppState,
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};
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// 统一由这里构造 Axum 路由树，后续再逐项挂接中间件与业务路由。
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pub fn build_router(state: AppState) -> Router {
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Router::new()
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// 错误归一化层放在 tracing 里侧，让 tracing 记录到最终对外返回的状态与错误体形态。
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.layer(middleware::from_fn(normalize_error_response))
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// 响应头回写放在错误归一化外侧，确保最终写回的是归一化后的最终响应。
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.layer(middleware::from_fn(propagate_request_id_header))
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// 当前阶段先统一挂接 HTTP tracing，后续 request_id、响应头与错误中间件继续在这里扩展。
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.layer(
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TraceLayer::new_for_http()
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.make_span_with(|request: &Request<Body>| {
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let request_id =
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resolve_request_id(request).unwrap_or_else(|| "unknown".to_string());
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info_span!(
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"http.request",
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method = %request.method(),
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uri = %request.uri(),
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request_id = %request_id,
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)
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})
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.on_request(DefaultOnRequest::new().level(Level::INFO))
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.on_response(DefaultOnResponse::new().level(Level::INFO))
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.on_failure(DefaultOnFailure::new().level(Level::ERROR)),
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)
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// request_id 中间件先进入请求链，确保后续 tracing、错误处理和响应头层都能复用同一份请求标识。
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.layer(middleware::from_fn(attach_request_context))
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.with_state(state)
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}
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