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#![warn(rust_2018_idioms, unreachable_pub)]
#[macro_use]
extern crate elfo_utils;
use std::{env, sync::Arc, time::SystemTime};
use dashmap::DashMap;
use derive_more::Constructor;
use futures_intrusive::{buffer::GrowingHeapBuf, channel::GenericChannel};
use fxhash::FxBuildHasher;
use parking_lot::RawMutex;
use sharded_slab::Pool;
use tracing::{span::Id as SpanId, Level, Metadata, Subscriber};
use tracing_subscriber::{prelude::*, registry::Registry, EnvFilter};
use elfo_core::{trace_id::TraceId, ActorMeta, Schema};
use crate::{actor::Logger, filtering_layer::FilteringLayer, printing_layer::PrintingLayer};
pub use crate::actor::ReopenLogFile;
mod actor;
mod config;
mod filtering_layer;
mod formatters;
mod printing_layer;
mod stats;
mod theme;
const CHANNEL_CAPACITY: usize = 128 * 1024;
type StringId = usize;
struct Shared {
channel: GenericChannel<RawMutex, PreparedEvent, GrowingHeapBuf<PreparedEvent>>,
pool: Pool<String>,
spans: DashMap<SpanId, SpanData, FxBuildHasher>,
}
#[derive(Constructor)]
struct SpanData {
parent_id: Option<SpanId>,
payload_id: StringId,
}
struct PreparedEvent {
timestamp: SystemTime,
trace_id: Option<TraceId>,
metadata: &'static Metadata<'static>,
object: Option<Arc<ActorMeta>>,
span_id: Option<SpanId>,
payload_id: StringId,
}
pub fn new() -> (PrintingLayer, Schema) {
let shared = Shared {
channel: GenericChannel::with_capacity(CHANNEL_CAPACITY),
pool: Pool::default(),
spans: DashMap::default(),
};
let shared = Arc::new(shared);
let layer = PrintingLayer::new(shared.clone());
let schema = Logger::new(shared);
(layer, schema)
}
pub fn init() -> Schema {
let (printer, schema) = new();
let registry = Registry::default();
if env::var(EnvFilter::DEFAULT_ENV).is_ok() {
let filter = EnvFilter::try_from_default_env().expect("invalid env");
let subscriber = registry.with(filter).with(printer);
install_subscriber(subscriber);
} else {
let filter = FilteringLayer::new(Level::INFO);
let subscriber = registry.with(filter).with(printer);
install_subscriber(subscriber);
};
schema
}
fn install_subscriber(s: impl Subscriber + Send + Sync) {
tracing::subscriber::set_global_default(s).expect("cannot set global subscriber");
}