fix: use INFO as default level for logs (#353)

* fix: set default rust log to info tap-agent

* style: cargo fmt applied

* feat: Add tracing subscriber to indexer-service

* feat: move init_tracing to a function outside main

Author: carlosvdr

service/src/main.rs

@@ -4,13 +4,32 @@
 use std::process::ExitCode;
 
 use indexer_service_rs::service::run;
+use tracing::level_filters::LevelFilter;
+use tracing::subscriber::set_global_default;
+use tracing_subscriber::{EnvFilter, FmtSubscriber};
 
 #[tokio::main]
 async fn main() -> ExitCode {
-    tracing_subscriber::fmt::init();
+    init_tracing();
     if let Err(e) = run().await {
         tracing::error!("Indexer service error: {e}");
         return ExitCode::from(1);
     }
     ExitCode::SUCCESS
 }
+
+fn init_tracing() {
+    // Tracing setup
+    let filter = EnvFilter::builder()
+        .with_default_directive(LevelFilter::INFO.into())
+        .from_env_lossy();
+    let subscriber_builder: tracing_subscriber::fmt::SubscriberBuilder<
+        tracing_subscriber::fmt::format::DefaultFields,
+        tracing_subscriber::fmt::format::Format,
+        EnvFilter,
+    > = FmtSubscriber::builder().with_env_filter(filter);
+    set_global_default(subscriber_builder.with_ansi(true).pretty().finish()).expect(
+        "Could not set up global default subscriber for logger, check \
+        environmental variable `RUST_LOG`",
+    );
+}

tap-agent/src/config.rs

@@ -1,16 +1,15 @@
 // Copyright 2023-, Edge & Node, GraphOps, and Semiotic Labs.
 // SPDX-License-Identifier: Apache-2.0
 
+use anyhow::Result;
 use clap::Parser;
 use indexer_config::{Config as IndexerConfig, ConfigPrefix};
 use reqwest::Url;
 use std::path::PathBuf;
 use std::{collections::HashMap, str::FromStr};
-use tracing::error;
-
-use anyhow::Result;
 use thegraph_core::{Address, DeploymentId};
 use tracing::subscriber::{set_global_default, SetGlobalDefaultError};
+use tracing::{error, level_filters::LevelFilter};
 use tracing_subscriber::{EnvFilter, FmtSubscriber};
 
 #[derive(Parser)]
@@ -165,7 +164,9 @@ pub struct Tap {
 
 /// Sets up tracing, allows log level to be set from the environment variables
 fn init_tracing(format: String) -> Result<(), SetGlobalDefaultError> {
-    let filter = EnvFilter::from_default_env();
+    let filter = EnvFilter::builder()
+        .with_default_directive(LevelFilter::INFO.into())
+        .from_env_lossy();
     let subscriber_builder: tracing_subscriber::fmt::SubscriberBuilder<
         tracing_subscriber::fmt::format::DefaultFields,
         tracing_subscriber::fmt::format::Format,