LS: Use tracing instead of log

commit-id:f5e463c0

crates/cairo-lang-language-server/Cargo.toml

@@ -20,13 +20,15 @@ cairo-lang-semantic = { path = "../cairo-lang-semantic", version = "2.5.3" }
 cairo-lang-starknet = { path = "../cairo-lang-starknet", version = "2.5.3" }
 cairo-lang-syntax = { path = "../cairo-lang-syntax", version = "2.5.3" }
 cairo-lang-test-plugin = { path = "../cairo-lang-test-plugin", version = "2.5.3" }
-cairo-lang-utils = { path = "../cairo-lang-utils", version = "2.5.3", features = ["env_logger"] }
-log.workspace = true
+cairo-lang-utils = { path = "../cairo-lang-utils", version = "2.5.3" }
 salsa.workspace = true
 scarb-metadata = "1"
 serde = { workspace = true, default-features = true }
 serde_json.workspace = true
 tokio = { version = "1.33.0", features = ["full"] }
 tower-lsp = "0.20.0"
+tracing = "0.1"
+tracing-log = "0.2"
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 
 [dev-dependencies]

crates/cairo-lang-language-server/src/lib.rs

@@ -52,11 +52,9 @@ use cairo_lang_syntax::node::kind::SyntaxKind;
 use cairo_lang_syntax::node::utils::is_grandparent_of_kind;
 use cairo_lang_syntax::node::{ast, SyntaxNode, TypedSyntaxNode};
 use cairo_lang_test_plugin::test_plugin_suite;
-use cairo_lang_utils::logging::init_logging;
 use cairo_lang_utils::ordered_hash_map::OrderedHashMap;
 use cairo_lang_utils::ordered_hash_set::OrderedHashSet;
 use cairo_lang_utils::{try_extract_matches, OptionHelper, Upcast};
-use log::warn;
 use salsa::InternKey;
 use semantic_highlighting::token_kind::SemanticTokenKind;
 use semantic_highlighting::SemanticTokensTraverser;
@@ -66,6 +64,8 @@ use tower_lsp::jsonrpc::{Error as LSPError, Result as LSPResult};
 use tower_lsp::lsp_types::notification::Notification;
 use tower_lsp::lsp_types::*;
 use tower_lsp::{Client, LanguageServer, LspService, Server};
+use tracing::warn;
+use tracing_subscriber::filter::{EnvFilter, LevelFilter};
 use vfs::{ProvideVirtualFileRequest, ProvideVirtualFileResponse};
 
 use crate::completions::{colon_colon_completions, dot_completions, generic_completions};
@@ -82,7 +82,16 @@ const DEFAULT_CAIRO_LSP_DB_REPLACE_INTERVAL: u64 = 300;
 
 #[tokio::main]
 pub async fn start() {
-    init_logging(log::LevelFilter::Warn);
+    tracing_subscriber::fmt()
+        .with_writer(std::io::stderr)
+        .with_env_filter(
+            EnvFilter::builder()
+                .with_default_directive(LevelFilter::WARN.into())
+                .with_env_var("CAIRO_LS_LOG")
+                .from_env_lossy(),
+        )
+        .with_ansi(false)
+        .init();
 
     let (stdin, stdout) = (tokio::io::stdin(), tokio::io::stdout());