Initial testing for appending tracing logs to appropiate log files depending on swap_id span
binarybaron
10 months ago
parent
63c1edbdd3
commit
c32bb6f624
@ -1,145 +1,99 @@
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use anyhow::Result;
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use std::fmt::Debug;
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use std::fs::OpenOptions;
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use std::io::Write;
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use std::option::Option::Some;
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use std::path::Path;
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use time::format_description::well_known::Rfc3339;
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use tracing::subscriber::set_global_default;
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use tracing::{Event, Level, Subscriber};
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use tracing_subscriber::fmt::format::{DefaultFields, Format, JsonFields};
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use std::path::{Path, PathBuf};
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use tracing::field::Field;
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use tracing::span::Attributes;
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use tracing::{Id, Level, Subscriber};
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use tracing_subscriber::fmt::format::{Format, Json, JsonFields};
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use tracing_subscriber::fmt::time::UtcTime;
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use tracing_subscriber::layer::{Context, SubscriberExt};
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use tracing_subscriber::{fmt, EnvFilter, FmtSubscriber, Layer, Registry};
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use uuid::Uuid;
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use tracing_subscriber::util::SubscriberInitExt;
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use tracing_subscriber::{EnvFilter, FmtSubscriber, Layer, Registry};
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use tracing_subscriber::fmt::{format, FormatEvent, MakeWriter};
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pub fn init(debug: bool, json: bool, dir: impl AsRef<Path>, swap_id: Option<Uuid>) -> Result<()> {
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if let Some(swap_id) = swap_id {
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let level_filter = EnvFilter::try_new("swap=debug")?;
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let registry = Registry::default().with(level_filter);
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let appender =
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tracing_appender::rolling::never(dir.as_ref(), format!("swap-{}.log", swap_id));
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let (appender, guard) = tracing_appender::non_blocking(appender);
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std::mem::forget(guard);
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struct SwapIdVisitor {
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swap_id: Option<String>,
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}
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let file_logger = registry.with(
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fmt::layer()
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.with_ansi(false)
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.with_target(false)
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.json()
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.with_writer(appender),
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);
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pub struct FileLayer {
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dir: PathBuf,
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}
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if json && debug {
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set_global_default(file_logger.with(debug_json_terminal_printer()))?;
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} else if json && !debug {
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set_global_default(file_logger.with(info_json_terminal_printer()))?;
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} else if !json && debug {
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set_global_default(file_logger.with(debug_terminal_printer()))?;
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} else {
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set_global_default(file_logger.with(info_terminal_printer()))?;
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impl FileLayer {
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pub fn new(dir: impl AsRef<Path>) -> Self {
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Self {
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dir: dir.as_ref().to_path_buf(),
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}
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} else {
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let level = if debug { Level::DEBUG } else { Level::INFO };
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let is_terminal = atty::is(atty::Stream::Stderr);
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let builder = FmtSubscriber::builder()
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.with_env_filter(format!("swap={}", level))
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.with_writer(std::io::stderr)
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.with_ansi(is_terminal)
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.with_timer(UtcTime::rfc_3339())
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.with_target(false);
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}
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if json {
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builder.json().init();
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} else {
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builder.init();
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}
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};
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fn get_log_path(&self, swap_id: &str) -> PathBuf {
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self.dir.join(format!("swap-{}.log", swap_id))
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}
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tracing::info!("Logging initialized to {}", dir.as_ref().display());
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Ok(())
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fn append_to_file(&self, swap_id: &str, message: &str) -> std::io::Result<()> {
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let path = self.get_log_path(swap_id);
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let mut file = OpenOptions::new().append(true).create(true).open(path)?;
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file.write_all(message.as_bytes())
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}
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}
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pub struct StdErrPrinter<L> {
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inner: L,
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level: Level,
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}
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type StdErrLayer<S, T> = tracing_subscriber::fmt::Layer<
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S,
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DefaultFields,
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Format<tracing_subscriber::fmt::format::Full, T>,
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fn() -> std::io::Stderr,
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>;
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impl<S> Layer<S> for FileLayer
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where
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S: Subscriber + for<'a> tracing_subscriber::registry::LookupSpan<'a>,
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{
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fn on_new_span(&self, attrs: &Attributes<'_>, id: &Id, ctx: Context<'_, S>) {
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let mut visitor = SwapIdVisitor { swap_id: None };
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attrs.record(&mut visitor);
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if let Some(swap_id) = visitor.swap_id {
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if let Some(span) = ctx.span(id) {
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span.extensions_mut().insert(swap_id);
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}
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}
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}
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type StdErrJsonLayer<S, T> = tracing_subscriber::fmt::Layer<
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S,
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JsonFields,
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Format<tracing_subscriber::fmt::format::Json, T>,
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fn() -> std::io::Stderr,
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>;
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fn on_event(&self, event: &tracing::Event<'_>, ctx: tracing_subscriber::layer::Context<'_, S>) {
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if let Some(current_span_id) = ctx.current_span().id() {
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if let Some(span) = ctx.span(current_span_id) {
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if let Some(swap_id) = span.extensions().get::<String>() {
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println!("swap_id: {}", swap_id);
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fn debug_terminal_printer<S>() -> StdErrPrinter<StdErrLayer<S, UtcTime<Rfc3339>>> {
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let is_terminal = atty::is(atty::Stream::Stderr);
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StdErrPrinter {
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inner: fmt::layer()
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.with_ansi(is_terminal)
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.with_target(false)
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.with_timer(UtcTime::rfc_3339())
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.with_writer(std::io::stderr),
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level: Level::DEBUG,
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// Here I need to figure out how to format the event in JSON just like the internal JSON formatter does
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self.append_to_file(swap_id, &format!("{}\n", event.metadata().fields())).expect("Failed to write to file");
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}
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}
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}
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}
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}
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fn debug_json_terminal_printer<S>() -> StdErrPrinter<StdErrJsonLayer<S, UtcTime<Rfc3339>>> {
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let is_terminal = atty::is(atty::Stream::Stderr);
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StdErrPrinter {
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inner: fmt::layer()
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.with_ansi(is_terminal)
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.with_target(false)
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.with_timer(UtcTime::rfc_3339())
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.json()
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.with_writer(std::io::stderr),
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level: Level::DEBUG,
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impl tracing::field::Visit for SwapIdVisitor {
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fn record_debug(&mut self, field: &Field, value: &dyn Debug) {
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if field.name() == "swap_id" {
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self.swap_id = Some(format!("{:?}", value));
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}
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}
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}
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fn info_terminal_printer<S>() -> StdErrPrinter<StdErrLayer<S, ()>> {
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pub fn init(debug: bool, json: bool, dir: impl AsRef<Path>) -> Result<()> {
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let level = if debug { Level::DEBUG } else { Level::INFO };
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let is_terminal = atty::is(atty::Stream::Stderr);
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StdErrPrinter {
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inner: fmt::layer()
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.with_ansi(is_terminal)
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.with_target(false)
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.with_level(false)
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.without_time()
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.with_writer(std::io::stderr),
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level: Level::INFO,
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}
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}
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fn info_json_terminal_printer<S>() -> StdErrPrinter<StdErrJsonLayer<S, ()>> {
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let is_terminal = atty::is(atty::Stream::Stderr);
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StdErrPrinter {
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inner: fmt::layer()
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.with_ansi(is_terminal)
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.with_target(false)
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.with_level(false)
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.without_time()
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.json()
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.with_writer(std::io::stderr),
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level: Level::INFO,
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}
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}
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let file_layer = FileLayer::new(dir.as_ref());
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impl<L, S> Layer<S> for StdErrPrinter<L>
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where
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L: 'static + Layer<S>,
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S: Subscriber + for<'a> tracing_subscriber::registry::LookupSpan<'a>,
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{
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fn on_event(&self, event: &Event<'_>, ctx: Context<'_, S>) {
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if self.level.ge(event.metadata().level()) {
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self.inner.on_event(event, ctx);
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}
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}
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FmtSubscriber::builder()
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.with_env_filter(format!("swap={}", level))
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.with_writer(std::io::stderr)
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.with_ansi(is_terminal)
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.with_timer(UtcTime::rfc_3339())
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.with_target(false)
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.finish()
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.with(file_layer)
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.init();
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tracing::info!("Logging initialized to {}", dir.as_ref().display());
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Ok(())
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}
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