Add trace logs

Cargo.lock

@@ -2,6 +2,15 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "aho-corasick"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "async-attributes"
 version = "1.1.2"
@@ -276,6 +285,19 @@ dependencies = [
  "quick-error",
 ]
 
+[[package]]
+name = "env_logger"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4cd405aab171cb85d6735e5c8d9db038c17d3ca007a4d2c25f337935c3d90580"
+dependencies = [
+ "humantime",
+ "is-terminal",
+ "log",
+ "regex",
+ "termcolor",
+]
+
 [[package]]
 name = "err-derive"
 version = "0.2.4"
@@ -416,6 +438,29 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fbf6a919d6cf397374f7dfeeea91d974c7c0a7221d0d0f4f20d859d329e53fcc"
 
+[[package]]
+name = "hermit-abi"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc0fef456e4baa96da950455cd02c081ca953b141298e41db3fc7e36b1da849c"
+
+[[package]]
+name = "humantime"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b112acc8b3adf4b107a8ec20977da0273a8c386765a3ec0229bd500a1443f9f"
+
+[[package]]
+name = "is-terminal"
+version = "0.4.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e04d7f318608d35d4b61ddd75cbdaee86b023ebe2bd5a66ee0915f0bf93095a9"
+dependencies = [
+ "hermit-abi 0.5.2",
+ "libc",
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.14"
@@ -544,7 +589,7 @@ checksum = "a604568c3202727d1507653cb121dbd627a58684eb09a820fd746bee38b4442f"
 dependencies = [
  "cfg-if 1.0.0",
  "concurrent-queue",
- "hermit-abi",
+ "hermit-abi 0.4.0",
  "pin-project-lite",
  "rustix",
  "tracing",
@@ -590,7 +635,9 @@ version = "0.1.0"
 dependencies = [
  "async-std",
  "atomicwrites",
+ "env_logger",
  "futures-util",
+ "log",
  "main_error",
  "mdns",
  "serde",
@@ -612,6 +659,35 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "regex"
+version = "1.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b544ef1b4eac5dc2db33ea63606ae9ffcfac26c1416a2806ae0bf5f56b201191"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "809e8dc61f6de73b46c85f4c96486310fe304c434cfa43669d7b40f711150908"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
+
 [[package]]
 name = "rustix"
 version = "0.38.42"
@@ -734,6 +810,15 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "termcolor"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06794f8f6c5c898b3275aebefa6b8a1cb24cd2c6c79397ab15774837a0bc5755"
+dependencies = [
+ "winapi-util",
+]
+
 [[package]]
 name = "tracing"
 version = "0.1.41"
@@ -867,6 +952,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
+[[package]]
+name = "winapi-util"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
+dependencies = [
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"

Cargo.toml

@@ -18,6 +18,8 @@ serde_json = "1.0.133"
 atomicwrites = "0.4.4"
 main_error = "0.1.2"
 futures-util = "0.3.31"
+log = "0.4"
+env_logger = "0.10"
 
 [profile.release]
 lto = true

src/main.rs

@@ -8,6 +8,8 @@ use std::io::Write;
 use std::net::SocketAddr;
 use std::time::Duration;
 use std::time::Instant;
+use log::{debug, error, log_enabled, info, Level};
+
 
 /// The hostname of the devices we are searching for.
 const SERVICE_NAME: &str = "_prometheus-http._tcp.local";
@@ -38,6 +40,7 @@ const INTERVAL: Duration = Duration::from_secs(15);
 
 #[async_std::main]
 async fn main() -> Result<(), main_error::MainError> {
+    env_logger::init();
     let out = env::args()
         .nth(1)
         .map(|path| AtomicFile::new(path, AllowOverwrite));
@@ -49,6 +52,7 @@ async fn main() -> Result<(), main_error::MainError> {
 
     while let Some(Ok(response)) = stream.next().await {
         let response: Response = response;
+        log::trace!("Received Response: {:?}", response);
         let addr = response.socket_address();
         let mut labels: HashMap<String, String> = response
             .txt_records()
@@ -74,6 +78,7 @@ async fn main() -> Result<(), main_error::MainError> {
             };
 
             let start_count = services.len();
+            log::trace!("Adding service: {}", service.addr);
             services.insert(service.addr, service);
 
             let added_count = services.len();