Integrate tracing (#6339)

Tracing Integration
- [reference](5bbf1859e9/projects/project-ideas.md (L297))


  - [x] replace slog & log with tracing throughout the codebase
- [x] implement custom crit log
- [x] make relevant changes in the formatter
- [x] replace sloggers
- [x] re-write SSE logging components

cc: @macladson @eserilev

slasher/tests/attester_slashings.rs

@@ -1,6 +1,5 @@
 #![cfg(any(feature = "mdbx", feature = "lmdb", feature = "redb"))]
 
-use logging::test_logger;
 use maplit::hashset;
 use rayon::prelude::*;
 use slasher::{
@@ -272,7 +271,7 @@ fn slasher_test(
     let tempdir = tempdir().unwrap();
     let config = Config::new(tempdir.path().into());
     let spec = chain_spec();
-    let slasher = Slasher::open(config, spec, test_logger()).unwrap();
+    let slasher = Slasher::open(config, spec).unwrap();
     let current_epoch = Epoch::new(current_epoch);
 
     for (i, attestation) in attestations.iter().enumerate() {
@@ -302,7 +301,7 @@ fn parallel_slasher_test(
     let tempdir = tempdir().unwrap();
     let config = Config::new(tempdir.path().into());
     let spec = chain_spec();
-    let slasher = Slasher::open(config, spec, test_logger()).unwrap();
+    let slasher = Slasher::open(config, spec).unwrap();
     let current_epoch = Epoch::new(current_epoch);
 
     attestations

slasher/tests/proposer_slashings.rs

@@ -1,6 +1,5 @@
 #![cfg(any(feature = "mdbx", feature = "lmdb", feature = "redb"))]
 
-use logging::test_logger;
 use slasher::{
     test_utils::{block as test_block, chain_spec, E},
     Config, Slasher,
@@ -13,7 +12,7 @@ fn empty_pruning() {
     let tempdir = tempdir().unwrap();
     let config = Config::new(tempdir.path().into());
     let spec = chain_spec();
-    let slasher = Slasher::<E>::open(config, spec, test_logger()).unwrap();
+    let slasher = Slasher::<E>::open(config, spec).unwrap();
     slasher.prune_database(Epoch::new(0)).unwrap();
 }
 
@@ -27,7 +26,7 @@ fn block_pruning() {
     config.history_length = 2;
     let spec = chain_spec();
 
-    let slasher = Slasher::<E>::open(config.clone(), spec, test_logger()).unwrap();
+    let slasher = Slasher::<E>::open(config.clone(), spec).unwrap();
     let current_epoch = Epoch::from(2 * config.history_length);
 
     // Pruning the empty database should be safe.

slasher/tests/random.rs

@@ -1,6 +1,5 @@
 #![cfg(any(feature = "mdbx", feature = "lmdb", feature = "redb"))]
 
-use logging::test_logger;
 use rand::prelude::*;
 use slasher::{
     test_utils::{
@@ -36,9 +35,8 @@ impl Default for TestConfig {
 fn make_db() -> (TempDir, SlasherDB<E>) {
     let tempdir = tempdir().unwrap();
     let initial_config = Arc::new(Config::new(tempdir.path().into()));
-    let logger = test_logger();
     let spec = chain_spec();
-    let db = SlasherDB::open(initial_config.clone(), spec, logger).unwrap();
+    let db = SlasherDB::open(initial_config.clone(), spec).unwrap();
     (tempdir, db)
 }
 
@@ -60,7 +58,7 @@ fn random_test(seed: u64, mut db: SlasherDB<E>, test_config: TestConfig) -> Slas
     let config = Arc::new(config);
     db.update_config(config.clone());
 
-    let slasher = Slasher::<E>::from_config_and_db(config.clone(), db, test_logger()).unwrap();
+    let slasher = Slasher::<E>::from_config_and_db(config.clone(), db).unwrap();
 
     let validators = (0..num_validators as u64).collect::<Vec<u64>>();
 

slasher/tests/wrap_around.rs

@@ -1,6 +1,5 @@
 #![cfg(any(feature = "mdbx", feature = "lmdb", feature = "redb"))]
 
-use logging::test_logger;
 use slasher::{
     test_utils::{chain_spec, indexed_att},
     Config, Slasher,
@@ -17,7 +16,7 @@ fn attestation_pruning_empty_wrap_around() {
     config.chunk_size = 16;
     config.history_length = 16;
 
-    let slasher = Slasher::open(config.clone(), spec, test_logger()).unwrap();
+    let slasher = Slasher::open(config.clone(), spec).unwrap();
 
     let v = vec![0];
     let history_length = config.history_length as u64;