Feature/very minor refactoring (#188)

* log statement for forwarding traffic

* Mixnode logging intent to forward packet

* Presence logging level decrease + making things less public

* Default adjustments + human readable equivalents in comments

* Do not immediately refresh topology on start

mixnode/src/node/packet_forwarding.rs

@@ -14,6 +14,7 @@
 
 use futures::channel::mpsc;
 use futures::StreamExt;
+use log::*;
 use std::net::SocketAddr;
 use std::time::Duration;
 use tokio::runtime::Handle;
@@ -50,6 +51,7 @@ impl PacketForwarder {
         let sender_channel = self.conn_tx.clone();
         handle.spawn(async move {
             while let Some((address, packet)) = self.conn_rx.next().await {
+                trace!("Going to forward packet to {:?}", address);
                 // as a mix node we don't care about responses, we just want to fire packets
                 // as quickly as possible
                 self.tcp_client.send(address, packet, false).await.unwrap(); // if we're not waiting for response, we MUST get an Ok

mixnode/src/node/presence.rs

@@ -16,12 +16,12 @@ use crate::built_info;
 use directory_client::presence::mixnodes::MixNodePresence;
 use directory_client::requests::presence_mixnodes_post::PresenceMixNodesPoster;
 use directory_client::DirectoryClient;
-use log::{debug, error};
+use log::{error, trace};
 use std::time::Duration;
 use tokio::runtime::Handle;
 use tokio::task::JoinHandle;
 
-pub struct NotifierConfig {
+pub(crate) struct NotifierConfig {
     location: String,
     directory_server: String,
     announce_host: String,
@@ -31,7 +31,7 @@ pub struct NotifierConfig {
 }
 
 impl NotifierConfig {
-    pub fn new(
+    pub(crate) fn new(
         location: String,
         directory_server: String,
         announce_host: String,
@@ -50,14 +50,14 @@ impl NotifierConfig {
     }
 }
 
-pub struct Notifier {
+pub(crate) struct Notifier {
     net_client: directory_client::Client,
     presence: MixNodePresence,
     sending_delay: Duration,
 }
 
 impl Notifier {
-    pub fn new(config: NotifierConfig) -> Notifier {
+    pub(crate) fn new(config: NotifierConfig) -> Notifier {
         let directory_client_cfg = directory_client::Config {
             base_url: config.directory_server,
         };
@@ -80,7 +80,7 @@ impl Notifier {
     fn notify(&self) {
         match self.net_client.presence_mix_nodes_post.post(&self.presence) {
             Err(err) => error!("failed to send presence - {:?}", err),
-            Ok(_) => debug!("sent presence information"),
+            Ok(_) => trace!("sent presence information"),
         }
     }