feat(project): init

Cargo.toml

@@ -0,0 +1,43 @@
+[package]
+name = "common-telemetry"
+version = "0.1.0"
+edition = "2024"
+description = "Microservice infrastructure library"
+
+publish = ["kellnr"]
+
+[features]
+# 默认开启所有功能
+default = ["full"]
+full = ["error", "telemetry"]
+
+# --- Error 模块依赖 ---
+# 开启 error feature 将引入 thiserror, axum, serde
+error = ["dep:thiserror", "dep:axum", "dep:serde", "dep:serde_json"]
+
+# --- Telemetry 模块依赖 ---
+# 开启 telemetry feature 将引入 tracing 全家桶
+telemetry = ["dep:tracing", "dep:tracing-subscriber", "dep:tracing-appender"]
+
+[dependencies]
+# Error 相关
+thiserror = { version = "2.0.18", optional = true }
+axum = { version = "0.8.8", optional = true }
+serde = { version = "1.0", features = ["derive"], optional = true }
+serde_json = { version = "1.0", optional = true }
+
+# Telemetry 相关
+tracing = { version = "0.1", optional = true }
+tracing-subscriber = { version = "0.3", features = [
+    "env-filter",
+    "json",
+], optional = true }
+tracing-appender = { version = "0.2", optional = true }
+
+# --- 新增测试依赖 ---
+[dev-dependencies]
+tokio = { version = "1", features = ["full"] }
+tower = { version = "0.5.3", features = ["util"] } # 用于模拟 Web 请求
+http = "1.0"
+http-body-util = "0.1"                             # 用于读取 Body
+tempfile = "3.8"                                   # 用于创建临时日志目录