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b/crates/systemd-credentials/src/lib.rs new file mode 100644 index 0000000..7d12d9a --- /dev/null +++ b/crates/systemd-credentials/src/lib.rs @@ -0,0 +1,14 @@ +pub fn add(left: usize, right: usize) -> usize { + left + right +} + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn it_works() { + let result = add(2, 2); + assert_eq!(result, 4); + } +} diff --git a/crates/tracing-ecs/Cargo.toml b/crates/tracing-ecs/Cargo.toml new file mode 100644 index 0000000..2a63f36 --- /dev/null +++ b/crates/tracing-ecs/Cargo.toml @@ -0,0 +1,15 @@ +[package] +name = "tracing-ecs" +version = "0.1.0" +edition = "2021" + +[dependencies] +chrono = { version = "0.4.24", default-features = false, features = ["std", 'serde', 'clock'] } +serde = { version = "1.0.159", features = ['derive'] } +serde_json = "1.0.95" +tracing = "0.1.37" +tracing-core = { version = "0.1.30", default-features = false, features = ["std"] } +tracing-subscriber = { version = "0.3.16", features = ["env-filter", "serde_json"] } + +[dev-dependencies] +tracing-test = "0.2.4" diff --git a/crates/tracing-ecs/src/lib.rs b/crates/tracing-ecs/src/lib.rs new file mode 100644 index 0000000..6b6aacf --- /dev/null +++ b/crates/tracing-ecs/src/lib.rs @@ -0,0 +1,282 @@ +//! Based on [ecs-logger](https://github.com/ciffelia/ecs-logger) crate + +use std::path::Path; + +use chrono::{DateTime, Utc}; +use serde::{Deserialize, Serialize}; +use tracing::Subscriber; +use tracing_subscriber::fmt::{format, FmtContext, FormatEvent, FormatFields, MakeWriter}; +use tracing_subscriber::layer::SubscriberExt; +use tracing_subscriber::registry::LookupSpan; +use tracing_subscriber::util::SubscriberInitExt; +use tracing_subscriber::{EnvFilter, Layer, Registry}; + +/// Represents Elastic Common Schema version. +const ECS_VERSION: &str = "1.2.0"; + +#[derive(Debug, Clone, Serialize, Deserialize)] +pub struct Config { + #[serde(default)] + pub enabled: bool, +} + +#[derive(Debug, Clone, PartialEq, Eq, Serialize)] +pub struct Log { + pub logger: &'static str, + pub level: String, +} + +impl Log { + fn new<'a>(record: &'a tracing_core::Event<'a>) -> Self { + Self { + logger: "ECS Logger", + level: record.metadata().level().to_string(), + } + } +} + +#[derive(Debug, Clone, PartialEq, Eq, Serialize)] +pub struct Service<'env> { + pub name: &'static str, + pub version: &'static str, + pub environment: &'env str, +} + +#[derive(Debug, Clone, PartialEq, Eq, Serialize)] +pub struct BodyMockup { + pub content: String, +} + +#[derive(Debug, Clone, PartialEq, Eq, Serialize)] +pub struct HttpRequest { + pub id: String, + pub method: String, + pub body: BodyMockup, +} + +#[derive(Debug, Clone, PartialEq, Eq, Serialize)] +pub struct HttpResponse { + pub status_code: u16, + pub body: BodyMockup, +} + +#[derive(Debug, Clone, PartialEq, Eq, Serialize)] +pub struct Http { + pub request: HttpRequest, + pub response: HttpResponse, +} + +/// Information about the source code which logged the message. +/// +/// +#[derive(Debug, Clone, PartialEq, Eq, Serialize)] +pub struct LogOrigin<'a> { + /// Representation of the source code which logged the message. + /// + /// Mapped to `log.origin.file` field. + pub file: LogOriginFile<'a>, + + /// Rust-specific information about the source code which logged the + /// message. + /// + /// Mapped to `log.origin.rust` field. + pub rust: LogOriginRust<'a>, +} + +/// Representation of the source code which logged the message. +/// +/// +#[derive(Debug, Clone, PartialEq, Eq, Serialize)] +pub struct LogOriginFile<'a> { + /// The line number of the source code which logged the message. + /// + /// Mapped to `log.origin.file.line` field. + #[serde(skip_serializing_if = "Option::is_none")] + pub line: Option, + + /// The filename of the source code which logged the message. + /// + /// Mapped to `log.origin.file.name` field. + #[serde(skip_serializing_if = "Option::is_none")] + pub name: Option<&'a str>, +} + +/// Rust-specific information about the source code which logged the message. +#[derive(Debug, Clone, PartialEq, Eq, Serialize)] +pub struct LogOriginRust<'a> { + /// The name of the log target. + /// + /// Mapped to `log.origin.rust.target` field. + pub target: &'a str, + + /// The module path of the source code which logged the message. + /// + /// Mapped to `log.origin.rust.module_path` field. + #[serde(skip_serializing_if = "Option::is_none")] + pub module_path: Option<&'a str>, + + /// The file path of the source code which logged the message. + /// + /// Mapped to `log.origin.rust.file_path` field. + #[serde(skip_serializing_if = "Option::is_none")] + pub file_path: Option<&'a str>, +} + +#[derive(Debug, Clone, PartialEq, Eq, Serialize)] +pub struct Labels { + #[serde(rename = "rust.target")] + pub target: String, + #[serde(rename = "rust.module_path")] + pub module_path: String, + #[serde(rename = "rust.file_path")] + pub file: String, + #[serde(rename = "file.line")] + pub line: String, + #[serde(rename = "file.name")] + pub file_path: String, +} + +/// Representation of an event compatible with ECS logging. +/// +/// The event follows [ECS Logging spec](https://github.com/elastic/ecs-logging/tree/master/spec). +#[derive(Debug, Clone, PartialEq, Eq, Serialize)] +pub struct Event<'env> { + pub log: Log, + pub service: Service<'env>, + pub labels: Labels, + pub tags: Vec, + pub http: Option, + + /// Date and time when the message is logged. + /// + /// Mapped to `@timestamp` field. + #[serde(rename = "@timestamp")] + pub timestamp: DateTime, + + /// The message body. + /// + /// Mapped to `message` field. + pub message: String, + + /// ECS version this event conforms to. + /// + /// Mapped to `ecs.version` field. + #[serde(rename = "ecs.version")] + pub ecs_version: &'static str, +} + +pub struct StringVisitor<'a> { + string: &'a mut String, +} + +impl<'a> tracing::field::Visit for StringVisitor<'a> { + fn record_debug(&mut self, _field: &tracing::field::Field, value: &dyn std::fmt::Debug) { + use std::fmt::Write; + write!(self.string, "{:?} ", value).unwrap(); + } +} + +impl<'a, 'env> Event<'env> { + pub fn new( + timestamp: DateTime, + event: &'a tracing_core::Event<'a>, + env: &'env str, + ) -> Self { + let meta = event.metadata(); + let file_path = meta.file().map(Path::new); + let mut message = String::new(); + event.record(&mut StringVisitor { + string: &mut message, + }); + + Self { + timestamp, + log: Log::new(event), + service: Service { + name: "seomatic", + version: env!("CARGO_PKG_VERSION"), + environment: env, + }, + message, + ecs_version: ECS_VERSION, + labels: Labels { + target: meta.target().into(), + module_path: meta.module_path().unwrap_or_default().into(), + file: meta.file().unwrap_or_default().into(), + line: meta.line().unwrap_or_default().to_string(), + file_path: file_path + .and_then(|p| p.file_name()) + .and_then(|os_str| os_str.to_str()) + .unwrap_or_default() + .into(), + }, + tags: vec![], + http: None, + } + } +} + +struct EcsFormatter { + env: String, +} + +impl FormatEvent for EcsFormatter +where + S: Subscriber + for<'a> LookupSpan<'a>, + N: for<'a> FormatFields<'a> + 'static, +{ + fn format_event( + &self, + _ctx: &FmtContext<'_, S, N>, + mut writer: format::Writer<'_>, + event: &tracing_core::Event<'_>, + ) -> std::fmt::Result { + let event = Event::new(Utc::now(), event, &self.env); + + writeln!(writer, "{}", serde_json::to_string(&event).unwrap()) + } +} + +pub fn init() { + init_with_writer(|| std::io::stdout()); +} + +fn init_with_writer<'writer, W>(writer: W) +where + W: std::io::Write, +{ + let layer = tracing_subscriber::fmt::layer() + .event_format(EcsFormatter { + env: std::env::var("ENV").unwrap_or_else(|_| "prod".into()), + }) + .with_writer(|| writer); + tracing_subscriber::registry() + .with(EnvFilter::from_default_env()) + .with(layer) + .init(); +} + +#[cfg(test)] +mod tests { + use crate::{init, init_with_writer}; + use std::sync::Mutex; + use tracing::info; + use tracing_test::internal::{logs_assert, MockWriter}; + + #[test] + fn format_msg() { + init(); + info!("Message"); + + let buffer = Mutex::new(Vec::with_capacity(1_024)); + let writer = MockWriter::new(&buffer); + init_with_writer(|| writer); + + logs_assert(|lines: &[&str]| { + for line in lines { + return Err(format!("{line:?}")); + } + todo!() + }); + } +} diff --git a/src/main.rs b/src/main.rs deleted file mode 100644 index e7a11a9..0000000 --- a/src/main.rs +++ /dev/null @@ -1,3 +0,0 @@ -fn main() { - println!("Hello, world!"); -}