rzerres/advotracker
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main: make log level dynamic

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* set the log level via environment variable

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>
This commit is contained in:
Ralf Zerres
2020-07-08 10:59:04 +02:00
parent f9453ee18c
commit 7a82640fd6
1 changed files with 10 additions and 5 deletions
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11
advotracker/src/main.rs
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@@ -29,7 +29,7 @@ use advotracker::widgets::main_view;
mod parse_args; mod parse_args;
/// respect environment variables set in .env files /// define valid environment variables provided via .env files
/// located in the current call directory /// located in the current call directory
/// this is primarily used in testing scenarios (eg. debugging) /// this is primarily used in testing scenarios (eg. debugging)
#[derive(Debug, Deserialize)] #[derive(Debug, Deserialize)]
@@ -71,13 +71,18 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
//static DEFAULT_FILTER: &str = concat!(module_path!(), "=", "trace"); //static DEFAULT_FILTER: &str = concat!(module_path!(), "=", "trace");
// respect dotenv environment (e.g for testing)
// -> overwrites the preset default values
let log = dotenv::var("RUST_LOG").unwrap_or_else(|_| String::from("None"));
// initialize the tracing subsystem // initialize the tracing subsystem
// a drop in replacement for classical logging // a drop in replacement for classical logging
// reference: https://tokio.rs/blog/2019-08-tracing/ // reference: https://tokio.rs/blog/2019-08-tracing/
let span = tracing::span!(Level::TRACE, "csv-test");
let span = tracing::span!(Level::TRACE, "advotracker");
let _enter = span.enter(); let _enter = span.enter();
let subscriber = fmt::Subscriber::builder() let subscriber = fmt::Subscriber::builder()
.with_env_filter("trace") .with_env_filter(&log)
//.with_max_level(tracing::Level::DEBUG) //.with_max_level(tracing::Level::DEBUG)
.finish(); .finish();