fix: tracing

Replaces custom logger with `tracing_subscriber`.

Signed-off-by: Jonathan Woollett-Light <jcawl@amazon.co.uk>

Author: Jonathan Woollett-Light

Cargo.lock

@@ -21,6 +21,7 @@ mmds = { path = "../mmds" }
 seccompiler = { path = "../seccompiler" }
 utils = { path = "../utils" }
 vmm = { path = "../vmm" }
+tracing = { version = "0.1.37", features = ["attributes"] }
 
 [dev-dependencies]
 libc = "0.2.117"

src/api_server/Cargo.toml

@@ -15,14 +15,15 @@ use std::path::PathBuf;
 use std::sync::mpsc;
 
 use logger::{
-    debug, error, info, update_metric_with_elapsed_time, warn, ProcessTimeReporter, METRICS,
+    update_metric_with_elapsed_time, ProcessTimeReporter, METRICS,
 };
 pub use micro_http::{
     Body, HttpServer, Method, Request, RequestError, Response, ServerError, ServerRequest,
     ServerResponse, StatusCode, Version,
 };
 use seccompiler::BpfProgramRef;
 use serde_json::json;
+use tracing::{debug, error, info, warn};
 use utils::eventfd::EventFd;
 use vmm::rpc_interface::{VmmAction, VmmActionError, VmmData};
 use vmm::vmm_config::snapshot::SnapshotType;

src/api_server/src/lib.rs

@@ -3,10 +3,10 @@
 
 use std::fmt::Debug;
 
-use logger::{error, info};
 use micro_http::{Body, Method, Request, Response, StatusCode, Version};
 use serde::ser::Serialize;
 use serde_json::Value;
+use tracing::{error, info};
 use vmm::rpc_interface::{VmmAction, VmmActionError};
 
 use super::VmmData;