frontend: example: csv-import helper update

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>

frontend/examples/csv-import/main.rs

@@ -49,13 +49,16 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     use tracing_subscriber::fmt;
     use viperus::Viperus;
 
+    //static DEFAULT_FILTER: &str = concat!(module_path!(), "=", "trace");
+
     // initialize the tracing subsystem
     // a drop in replacement for classical logging
     // reference: https://tokio.rs/blog/2019-08-tracing/
     let span = tracing::span!(Level::TRACE, "csv-import");
     let _enter = span.enter();
     let subscriber = fmt::Subscriber::builder()
-        .with_env_filter("csv-import=trace")
+        .with_env_filter("trace")
+        //.with_max_level(tracing::Level::DEBUG)
         .finish();
 
     // initialize logger

frontend/examples/csv-import/parse_args.rs

@@ -4,7 +4,7 @@ use viperus::Viperus;
 /// processed default, environment and commandline arguments
 pub fn parse_args(v: &mut Viperus) -> Result<(), Box<dyn std::error::Error>> {
     //use log::{debug, info, trace, warn};
-    use log::trace;
+    use tracing::{trace, Level};
     use std::env;
 
     if cfg!(feature = "fmt-clap") {
@@ -23,7 +23,7 @@ pub fn parse_args(v: &mut Viperus) -> Result<(), Box<dyn std::error::Error>> {
     use clap::{crate_authors, crate_description, crate_name, crate_version, App, Arg};
 
     // CLI arguments are defined inline
-    let matches = App::new("nctalkproxyd")
+    let matches = App::new("csv-import")
         .name(crate_name!())
         .version(crate_version!())
         .author(crate_authors!())