main.rs(文件已创建)
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| 1 | + | use axum::{ | |
| 2 | + | Router, | |
| 3 | + | extract::{Query, State}, | |
| 4 | + | response::{IntoResponse, Response}, | |
| 5 | + | routing::get, | |
| 6 | + | http::StatusCode, | |
| 7 | + | }; | |
| 8 | + | use serde::{Deserialize, Serialize}; | |
| 9 | + | use std::process::Command; | |
| 10 | + | use tower_http::cors::{CorsLayer, Any}; | |
| 11 | + | use tower_http::trace::TraceLayer; | |
| 12 | + | ||
| 13 | + | struct AppError(anyhow::Error); | |
| 14 | + | ||
| 15 | + | impl IntoResponse for AppError { | |
| 16 | + | fn into_response(self) -> Response { | |
| 17 | + | let body = serde_json::json!({ | |
| 18 | + | "error": self.0.to_string(), | |
| 19 | + | }); | |
| 20 | + | (StatusCode::INTERNAL_SERVER_ERROR, axum::Json(body)).into_response() | |
| 21 | + | } | |
| 22 | + | } | |
| 23 | + | ||
| 24 | + | impl<E: Into<anyhow::Error>> From<E> for AppError { | |
| 25 | + | fn from(err: E) -> Self { | |
| 26 | + | AppError(err.into()) | |
| 27 | + | } | |
| 28 | + | } | |
| 29 | + | ||
| 30 | + | #[derive(Clone)] | |
| 31 | + | struct AppState { | |
| 32 | + | start_time: chrono::DateTime<chrono::Local>, | |
| 33 | + | } | |
| 34 | + | ||
| 35 | + | #[derive(Serialize)] | |
| 36 | + | struct HealthResponse { | |
| 37 | + | status: String, | |
| 38 | + | version: String, | |
| 39 | + | } | |
| 40 | + | ||
| 41 | + | async fn health() -> axum::Json<HealthResponse> { | |
| 42 | + | axum::Json(HealthResponse { | |
| 43 | + | status: "ok".to_string(), | |
| 44 | + | version: "0.1.0".to_string(), | |
| 45 | + | }) | |
| 46 | + | } | |
| 47 | + | ||
| 48 | + | #[derive(Serialize)] | |
| 49 | + | struct SystemInfo { | |
| 50 | + | hostname: String, | |
| 51 | + | uptime: String, | |
| 52 | + | cpu: String, | |
| 53 | + | memory: String, | |
| 54 | + | timestamp: String, | |
| 55 | + | } | |
| 56 | + | ||
| 57 | + | async fn system_info() -> Result<axum::Json<SystemInfo>, AppError> { | |
| 58 | + | let hostname = String::from_utf8_lossy( | |
| 59 | + | &Command::new("hostname").output()?.stdout | |
| 60 | + | ).trim().to_string(); | |
| 61 | + | let uptime = String::from_utf8_lossy( | |
| 62 | + | &Command::new("uptime").arg("-p").output()?.stdout | |
| 63 | + | ).trim().to_string(); | |
| 64 | + | let cpu = String::from_utf8_lossy( | |
| 65 | + | &Command::new("sh") | |
| 66 | + | .args(["-c", "lscpu | grep 'Model name' | cut -d: -f2 | xargs"]) | |
| 67 | + | .output()?.stdout | |
| 68 | + | ).trim().to_string(); | |
| 69 | + | let memory = String::from_utf8_lossy( | |
| 70 | + | &Command::new("free").arg("-h").args(["--si"]).output()?.stdout | |
| 71 | + | ).trim().to_string(); | |
| 72 | + | Ok(axum::Json(SystemInfo { | |
| 73 | + | hostname, uptime, cpu, memory, | |
| 74 | + | timestamp: chrono::Local::now().format("%Y-%m-%d %H:%M:%S").to_string(), | |
| 75 | + | })) | |
| 76 | + | } | |
| 77 | + | ||
| 78 | + | #[derive(Deserialize)] | |
| 79 | + | struct LogQuery { | |
| 80 | + | lines: Option<u32>, | |
| 81 | + | } | |
| 82 | + | ||
| 83 | + | #[derive(Serialize)] | |
| 84 | + | struct LogResponse { | |
| 85 | + | lines: u32, | |
| 86 | + | logs: Vec<String>, | |
| 87 | + | } | |
| 88 | + | ||
| 89 | + | async fn get_logs(Query(params): Query<LogQuery>) -> Result<axum::Json<LogResponse>, AppError> { | |
| 90 | + | let lines = params.lines.unwrap_or(50).clamp(1, 500); | |
| 91 | + | let output = Command::new("journalctl") | |
| 92 | + | .args(["-n", &lines.to_string(), "--no-pager", "-o", "cat"]) | |
| 93 | + | .output() | |
| 94 | + | .map_err(|e| AppError(anyhow::anyhow!("Error ejecutando journalctl: {}", e)))?; | |
| 95 | + | if !output.status.success() { | |
| 96 | + | return Err(AppError(anyhow::anyhow!( | |
| 97 | + | "journalctl falló: {}", | |
| 98 | + | String::from_utf8_lossy(&output.stderr) | |
| 99 | + | ))); | |
| 100 | + | } | |
| 101 | + | let logs: Vec<String> = String::from_utf8_lossy(&output.stdout) | |
| 102 | + | .lines() | |
| 103 | + | .map(|l| l.to_string()) | |
| 104 | + | .collect(); | |
| 105 | + | Ok(axum::Json(LogResponse { lines, logs })) | |
| 106 | + | } | |
| 107 | + | ||
| 108 | + | async fn get_disk(State(state): State<AppState>) -> Result<axum::Json<serde_json::Value>, AppError> { | |
| 109 | + | let output = Command::new("df") | |
| 110 | + | .args(["-h", "--type=ext4", "--type=btrfs", "--type=xfs", | |
| 111 | + | "--exclude-type=tmpfs", "--exclude-type=devtmpfs"]) | |
| 112 | + | .output()?; | |
| 113 | + | let stdout = String::from_utf8_lossy(&output.stdout); | |
| 114 | + | let mut disks = Vec::new(); | |
| 115 | + | for line in stdout.lines().skip(1) { | |
| 116 | + | let parts: Vec<&str> = line.split_whitespace().collect(); | |
| 117 | + | if parts.len() >= 6 { | |
| 118 | + | disks.push(serde_json::json!({ | |
| 119 | + | "filesystem": parts[0], | |
| 120 | + | "size": parts[1], | |
| 121 | + | "used": parts[2], | |
| 122 | + | "avail": parts[3], | |
| 123 | + | "use_percent": parts[4], | |
| 124 | + | "mounted_on": parts[5], | |
| 125 | + | })); | |
| 126 | + | } | |
| 127 | + | } | |
| 128 | + | let uptime_secs = (chrono::Local::now() - state.start_time).num_seconds(); | |
| 129 | + | Ok(axum::Json(serde_json::json!({ | |
| 130 | + | "disks": disks, | |
| 131 | + | "server_uptime_seconds": uptime_secs, | |
| 132 | + | "timestamp": chrono::Local::now().to_rfc3339(), | |
| 133 | + | }))) | |
| 134 | + | } | |
| 135 | + | ||
| 136 | + | #[tokio::main] | |
| 137 | + | async fn main() { | |
| 138 | + | tracing_subscriber::fmt() | |
| 139 | + | .with_env_filter( | |
| 140 | + | tracing_subscriber::EnvFilter::try_from_default_env() | |
| 141 | + | .unwrap_or_else(|_| "crustaceo_api=debug,tower_http=debug".into()), | |
| 142 | + | ) | |
| 143 | + | .init(); | |
| 144 | + | let state = AppState { | |
| 145 | + | start_time: chrono::Local::now(), | |
| 146 | + | }; | |
| 147 | + | let app = Router::new() | |
| 148 | + | .route("/health", get(health)) | |
| 149 | + | .route("/info", get(system_info)) | |
| 150 | + | .route("/logs", get(get_logs)) | |
| 151 | + | .route("/disk", get(get_disk)) | |
| 152 | + | .layer(CorsLayer::new().allow_origin(Any).allow_methods(Any).allow_headers(Any)) | |
| 153 | + | .layer(TraceLayer::new_for_http()) | |
| 154 | + | .with_state(state); | |
| 155 | + | let listener = tokio::net::TcpListener::bind("0.0.0.0:3000") | |
| 156 | + | .await | |
| 157 | + | .expect("No se pudo enlazar al puerto 3000"); | |
| 158 | + | println!("🦀 crustaceo-api escuchando en http://0.0.0.0:3000"); | |
| 159 | + | axum::serve(listener, app).await.unwrap(); | |
| 160 | + | } | |
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