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log.rs
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397 lines (337 loc) · 8.51 KB
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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
use chrono::Local;
use opentelemetry::{
sdk::trace::{Tracer, TracerProvider},
trace::{SpanBuilder, Tracer as TraitTracer, TracerProvider as TracerProviderTrait},
};
use std::fmt;
use std::{env, path::Path, sync::Arc};
use std::{
io::Write,
sync::atomic::{AtomicU32, Ordering},
};
const NO_COLOR_ENV: &str = "NO_COLOR";
static INSTANCE_COUNTER: AtomicU32 = AtomicU32::new(0);
// Gets a next incrementing number that can be used in logs
pub fn next_counter() -> u32 {
INSTANCE_COUNTER.fetch_add(1, Ordering::SeqCst)
}
// Log level
#[derive(clap::ArgEnum, PartialEq, Eq, PartialOrd, Clone, Copy, Debug)]
pub enum Level {
Trace = 0,
Debug,
Info,
Warn,
Error,
Critical,
Off,
}
impl Default for Level {
fn default() -> Self {
Level::Info
}
}
impl fmt::Display for Level {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
Level::Critical => write!(f, "critical"),
Level::Debug => write!(f, "debug"),
Level::Error => write!(f, "error"),
Level::Info => write!(f, "info"),
Level::Off => write!(f, "off"),
Level::Trace => write!(f, "trace"),
Level::Warn => write!(f, "warn"),
}
}
}
impl Level {
pub fn name(&self) -> Option<&str> {
match self {
Level::Trace => Some("trace"),
Level::Debug => Some("debug"),
Level::Info => Some("info"),
Level::Warn => Some("warn"),
Level::Error => Some("error"),
Level::Critical => Some("critical"),
Level::Off => None,
}
}
pub fn color_code(&self) -> Option<&str> {
if env::var(NO_COLOR_ENV).is_ok() || !atty::is(atty::Stream::Stdout) {
return None;
}
match self {
Level::Trace => None,
Level::Debug => Some("\x1b[36m"),
Level::Info => Some("\x1b[35m"),
Level::Warn => Some("\x1b[33m"),
Level::Error => Some("\x1b[31m"),
Level::Critical => Some("\x1b[31m"),
Level::Off => None,
}
}
pub fn to_u8(self) -> u8 {
self as u8
}
}
pub fn new_tunnel_prefix() -> String {
format!("[tunnel.{}]", next_counter())
}
pub fn new_code_server_prefix() -> String {
format!("[codeserver.{}]", next_counter())
}
pub fn new_rpc_prefix() -> String {
format!("[rpc.{}]", next_counter())
}
// Base logger implementation
#[derive(Clone)]
pub struct Logger {
tracer: Tracer,
sink: Vec<Box<dyn LogSink>>,
prefix: Option<String>,
}
// Copy trick from https://stackoverflow.com/a/30353928
pub trait LogSinkClone {
fn clone_box(&self) -> Box<dyn LogSink>;
}
impl<T> LogSinkClone for T
where
T: 'static + LogSink + Clone,
{
fn clone_box(&self) -> Box<dyn LogSink> {
Box::new(self.clone())
}
}
pub trait LogSink: LogSinkClone + Sync + Send {
fn write_log(&self, level: Level, prefix: &str, message: &str);
fn write_result(&self, message: &str);
}
impl Clone for Box<dyn LogSink> {
fn clone(&self) -> Box<dyn LogSink> {
self.clone_box()
}
}
#[derive(Clone)]
pub struct StdioLogSink {
level: Level,
}
impl LogSink for StdioLogSink {
fn write_log(&self, level: Level, prefix: &str, message: &str) {
if level < self.level {
return;
}
emit(level, prefix, message);
}
fn write_result(&self, message: &str) {
println!("{}", message);
}
}
#[derive(Clone)]
pub struct FileLogSink {
level: Level,
file: Arc<std::sync::Mutex<std::fs::File>>,
}
impl FileLogSink {
pub fn new(level: Level, path: &Path) -> std::io::Result<Self> {
let file = std::fs::File::create(path)?;
Ok(Self {
level,
file: Arc::new(std::sync::Mutex::new(file)),
})
}
}
impl LogSink for FileLogSink {
fn write_log(&self, level: Level, prefix: &str, message: &str) {
if level < self.level {
return;
}
let line = format(level, prefix, message);
// ignore any errors, not much we can do if logging fails...
self.file.lock().unwrap().write_all(line.as_bytes()).ok();
}
fn write_result(&self, _message: &str) {}
}
impl Logger {
pub fn test() -> Self {
Self {
tracer: TracerProvider::builder().build().tracer("codeclitest"),
sink: vec![],
prefix: None,
}
}
pub fn new(tracer: Tracer, level: Level) -> Self {
Self {
tracer,
sink: vec![Box::new(StdioLogSink { level })],
prefix: None,
}
}
pub fn span(&self, name: &str) -> SpanBuilder {
self.tracer.span_builder(format!("serverlauncher/{}", name))
}
pub fn tracer(&self) -> &Tracer {
&self.tracer
}
pub fn emit(&self, level: Level, message: &str) {
let prefix = self.prefix.as_deref().unwrap_or("");
for sink in &self.sink {
sink.write_log(level, prefix, message);
}
}
pub fn result(&self, message: impl AsRef<str>) {
for sink in &self.sink {
sink.write_result(message.as_ref());
}
}
pub fn prefixed(&self, prefix: &str) -> Logger {
Logger {
prefix: Some(match &self.prefix {
Some(p) => format!("{}{} ", p, prefix),
None => format!("{} ", prefix),
}),
..self.clone()
}
}
/// Creates a new logger with the additional log sink added.
pub fn tee<T>(&self, sink: T) -> Logger
where
T: LogSink + 'static,
{
let mut new_sinks = self.sink.clone();
new_sinks.push(Box::new(sink));
Logger {
sink: new_sinks,
..self.clone()
}
}
pub fn get_download_logger<'a>(&'a self, prefix: &'static str) -> DownloadLogger<'a> {
DownloadLogger {
prefix,
logger: self,
}
}
}
pub struct DownloadLogger<'a> {
prefix: &'static str,
logger: &'a Logger,
}
impl<'a> crate::util::io::ReportCopyProgress for DownloadLogger<'a> {
fn report_progress(&mut self, bytes_so_far: u64, total_bytes: u64) {
if total_bytes > 0 {
self.logger.emit(
Level::Trace,
&format!(
"{} {}/{} ({:.0}%)",
self.prefix,
bytes_so_far,
total_bytes,
(bytes_so_far as f64 / total_bytes as f64) * 100.0,
),
);
} else {
self.logger.emit(
Level::Trace,
&format!("{} {}/{}", self.prefix, bytes_so_far, total_bytes,),
);
}
}
}
pub fn format(level: Level, prefix: &str, message: &str) -> String {
let current = Local::now();
let timestamp = current.format("%Y-%m-%d %H:%M:%S").to_string();
let name = level.name().unwrap();
if let Some(c) = level.color_code() {
format!(
"\x1b[2m[{}]\x1b[0m {}{}\x1b[0m {}{}\n",
timestamp, c, name, prefix, message
)
} else {
format!("[{}] {} {}{}\n", timestamp, name, prefix, message)
}
}
pub fn emit(level: Level, prefix: &str, message: &str) {
let line = format(level, prefix, message);
if level == Level::Trace {
print!("\x1b[2m{}\x1b[0m", line);
} else {
print!("{}", line);
}
}
#[macro_export]
macro_rules! error {
($logger:expr, $str:expr) => {
$logger.emit(log::Level::Error, $str)
};
($logger:expr, $($fmt:expr),+) => {
$logger.emit(log::Level::Error, &format!($($fmt),+))
};
}
#[macro_export]
macro_rules! trace {
($logger:expr, $str:expr) => {
$logger.emit(log::Level::Trace, $str)
};
($logger:expr, $($fmt:expr),+) => {
$logger.emit(log::Level::Trace, &format!($($fmt),+))
};
}
#[macro_export]
macro_rules! debug {
($logger:expr, $str:expr) => {
$logger.emit(log::Level::Debug, $str)
};
($logger:expr, $($fmt:expr),+) => {
$logger.emit(log::Level::Debug, &format!($($fmt),+))
};
}
#[macro_export]
macro_rules! info {
($logger:expr, $str:expr) => {
$logger.emit(log::Level::Info, $str)
};
($logger:expr, $($fmt:expr),+) => {
$logger.emit(log::Level::Info, &format!($($fmt),+))
};
}
#[macro_export]
macro_rules! warning {
($logger:expr, $str:expr) => {
$logger.emit(log::Level::Warn, $str)
};
($logger:expr, $($fmt:expr),+) => {
$logger.emit(log::Level::Warn, &format!($($fmt),+))
};
}
#[macro_export]
macro_rules! span {
($logger:expr, $span:expr, $func:expr) => {{
use opentelemetry::trace::TraceContextExt;
let span = $span.start($logger.tracer());
let cx = opentelemetry::Context::current_with_span(span);
let guard = cx.clone().attach();
let t = $func;
if let Err(e) = &t {
cx.span().record_error(e);
}
std::mem::drop(guard);
t
}};
}
#[macro_export]
macro_rules! spanf {
($logger:expr, $span:expr, $func:expr) => {{
use opentelemetry::trace::{FutureExt, TraceContextExt};
let span = $span.start($logger.tracer());
let cx = opentelemetry::Context::current_with_span(span);
let t = $func.with_context(cx.clone()).await;
if let Err(e) = &t {
cx.span().record_error(e);
}
cx.span().end();
t
}};
}