splitting part of util into smaller crates (#4956)

* split path module from util

* moved RotatingLogger from util to logger crate

* fix tests

* fix tests

* use only one version of ansi_term crate

stratum/Cargo.toml

@@ -24,6 +24,7 @@ semver = "0.5"
 ethcore-ipc-nano = { path = "../ipc/nano" }
 futures = "0.1"
 tokio-core = "0.1"
+ethcore-logger = { path = "../logger" }
 
 [profile.release]
 debug = true

stratum/src/lib.rs

@@ -24,6 +24,7 @@ extern crate ethcore_util as util;
 extern crate ethcore_ipc as ipc;
 extern crate semver;
 extern crate futures;
+extern crate ethcore_logger;
 
 #[cfg(test)] extern crate tokio_core;
 extern crate ethcore_devtools as devtools;
@@ -323,6 +324,8 @@ mod tests {
 	use tokio_core::io;
 	use futures::{Future, future};
 
+	use ethcore_logger::init_log;
+
 	pub struct VoidManager;
 
 	impl JobDispatcher for VoidManager {
@@ -331,32 +334,6 @@ mod tests {
 		}
 	}
 
-	lazy_static! {
-		static ref LOG_DUMMY: bool = {
-			use log::LogLevelFilter;
-			use env_logger::LogBuilder;
-			use std::env;
-
-			let mut builder = LogBuilder::new();
-			builder.filter(None, LogLevelFilter::Info);
-
-			if let Ok(log) = env::var("RUST_LOG") {
-				builder.parse(&log);
-			}
-
-			if let Ok(_) = builder.init() {
-				println!("logger initialized");
-			}
-			true
-		};
-	}
-
-	/// Intialize log with default settings
-	#[cfg(test)]
-	fn init_log() {
-		let _ = *LOG_DUMMY;
-	}
-
 	fn dummy_request(addr: &SocketAddr, data: &str) -> Vec<u8> {
 		let mut core = Core::new().expect("Tokio Core should be created with no errors");
 		let mut buffer = vec![0u8; 2048];