Add support for silent mode and trace logging

CHANGELOG.md

@@ -21,6 +21,10 @@ to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 - Added interactive GeoIp map display ([#505](https://github.com/fujiapple852/trippy/issues/505))
 - Added support for the [paris](https://github.com/libparistraceroute/libparistraceroute) ECMP traceroute strategy
   for `IPv4/udp` ([#542](https://github.com/fujiapple852/trippy/issues/542))
+- Added `silent` reporting mode to run tracing without producing any
+  output ([#555](https://github.com/fujiapple852/trippy/issues/555))
+- Added `-v` (`--verbose`), `--log-format`, `--log-filter` & `--log-span-events` flags to support generating debug trace
+  logging output ([#552](https://github.com/fujiapple852/trippy/issues/552))
 
 ### Changed
 

Cargo.toml

@@ -24,6 +24,7 @@ thiserror = "1.0.40"
 derive_more = "0.99.17"
 arrayvec = "0.7.2"
 socket2 = { version = "0.5.2", features = [ "all" ] }
+tracing = "0.1.37"
 
 # TUI dependencies
 anyhow = "1.0.71"
@@ -46,6 +47,8 @@ etcetera = "0.8.0"
 toml = "0.7.3"
 indexmap = "1.9.3"
 maxminddb = "0.23.0"
+tracing-subscriber = { version = "0.3.17", features = ["env-filter", "json"] }
+tracing-chrome = "0.7.1"
 
 # Library dependencies (Linux)
 [target.'cfg(target_os = "linux")'.dependencies]

README.md

@@ -324,6 +324,12 @@ Generate `bash` shell completions (or `fish`, `powershell`, `zsh`, `elvish`):
 trip --generate bash
 ```
 
+Run in `silent` tracing mode and output `compact` trace logging with `full` span events:
+
+```shell
+trip www.example.com -m silent -v --log-format compact --log-span-events full
+```
+
 ## Command Reference
 
 ```shell
@@ -347,6 +353,7 @@ Options:
           - markdown: Generate a markdown text table report for N cycles
           - csv:      Generate a SCV report for N cycles
           - json:     Generate a JSON report for N cycles
+          - silent:   Do not generate any tracing output for N cycles
 
   -p, --protocol <PROTOCOL>
           Tracing protocol [default: icmp]
@@ -511,6 +518,29 @@ Options:
 
           [possible values: bash, elvish, fish, powershell, zsh]
 
+      --log-format <LOG_FORMAT>
+          The debug log format [default: pretty]
+
+          Possible values:
+          - compact: Display log data in a compact format
+          - pretty:  Display log data in a pretty format
+          - json:    Display log data in a json format
+          - chrome:  Display log data in Chrome trace format
+
+      --log-filter <LOG_FILTER>
+          The debug log filter [default: trippy=debug]
+
+      --log-span-events <LOG_SPAN_EVENTS>
+          The debug log format [default: off]
+
+          Possible values:
+          - off:    Do not display event spans
+          - active: Display enter and exit event spans
+          - full:   Display all event spans
+
+  -v, --verbose
+          Enable verbose debug logging
+
   -h, --help
           Print help (see a summary with '-h')
 

src/backend.rs

@@ -5,6 +5,7 @@ use parking_lot::RwLock;
 use std::net::{IpAddr, Ipv4Addr};
 use std::sync::Arc;
 use std::time::Duration;
+use tracing::instrument;
 use trippy::tracing::{
     Probe, ProbeStatus, Tracer, TracerChannel, TracerChannelConfig, TracerConfig, TracerRound,
 };
@@ -266,6 +267,7 @@ impl Default for Hop {
 ///
 /// Note that this implementation blocks the tracer on the `RwLock` and so any delays in the the TUI will delay the
 /// next round of the started.
+#[instrument(skip_all)]
 pub fn run_backend(
     tracer_config: &TracerConfig,
     channel_config: &TracerChannelConfig,