Network-specific nodes file (#2569)

* network-specific nodes.json

* save nodes.json periodically

* squash warnings

parity/configuration.rs

@@ -31,7 +31,7 @@ use ethcore_rpc::NetworkSettings;
 use cache::CacheConfig;
 use helpers::{to_duration, to_mode, to_block_id, to_u256, to_pending_set, to_price, replace_home,
 geth_ipc_path, parity_ipc_path, to_bootnodes, to_addresses, to_address, to_gas_limit};
-use params::{ResealPolicy, AccountsConfig, GasPricerConfig, MinerExtras, SpecType};
+use params::{ResealPolicy, AccountsConfig, GasPricerConfig, MinerExtras};
 use ethcore_logger::Config as LogConfig;
 use dir::Directories;
 use dapps::Configuration as DappsConfiguration;
@@ -459,23 +459,12 @@ impl Configuration {
 		ret.min_peers = self.min_peers();
 		let mut net_path = PathBuf::from(self.directories().db);
 		net_path.push("network");
-		let net_specific_path = net_path.join(&try!(self.network_specific_path()));
 		ret.config_path = Some(net_path.to_str().unwrap().to_owned());
-		ret.net_config_path = Some(net_specific_path.to_str().unwrap().to_owned());
 		ret.reserved_nodes = try!(self.init_reserved_nodes());
 		ret.allow_non_reserved = !self.args.flag_reserved_only;
 		Ok(ret)
 	}
 
-	fn network_specific_path(&self) -> Result<PathBuf, String> {
-		let spec_type : SpecType = try!(self.chain().parse());
-		let spec = try!(spec_type.spec());
-		let id = try!(self.network_id());
-		let mut path = PathBuf::new();
-		path.push(format!("{}", id.unwrap_or_else(|| spec.network_id())));
-		Ok(path)
-	}
-
 	fn network_id(&self) -> Result<Option<U256>, String> {
 		let net_id = self.args.flag_network_id.as_ref().or(self.args.flag_networkid.as_ref());
 		match net_id {

parity/dir.rs

@@ -110,6 +110,13 @@ impl DatabaseDirectories {
 		dir.push("snapshot");
 		dir
 	}
+
+	/// Get the path for the network directory.
+	pub fn network_path(&self) -> PathBuf {
+		let mut dir = self.fork_path();
+		dir.push("network");
+		dir
+	}
 }
 
 #[cfg(test)]

parity/helpers.rs

@@ -179,7 +179,7 @@ pub fn default_network_config() -> ::ethsync::NetworkConfiguration {
 	use ethsync::NetworkConfiguration;
 	NetworkConfiguration {
 		config_path: Some(replace_home("$HOME/.parity/network")),
-		net_config_path: Some(replace_home("$HOME/.parity/network/1")),
+		net_config_path: None,
 		listen_address: Some("0.0.0.0:30303".into()),
 		public_address: None,
 		udp_port: None,

parity/run.rs

@@ -27,7 +27,7 @@ use ethcore::service::ClientService;
 use ethcore::account_provider::AccountProvider;
 use ethcore::miner::{Miner, MinerService, ExternalMiner, MinerOptions};
 use ethcore::snapshot;
-use ethsync::{SyncConfig, SyncProvider};
+use ethsync::SyncConfig;
 use informant::Informant;
 
 use rpc::{HttpServer, IpcServer, HttpConfiguration, IpcConfiguration};
@@ -201,6 +201,9 @@ pub fn execute(cmd: RunCmd) -> Result<(), String> {
 		net_conf.boot_nodes = spec.nodes.clone();
 	}
 
+	// set network path.
+	net_conf.net_config_path = Some(db_dirs.network_path().to_string_lossy().into_owned());
+
 	// create supervisor
 	let mut hypervisor = modules::hypervisor(&cmd.dirs.ipc_path());
 
@@ -302,7 +305,7 @@ pub fn execute(cmd: RunCmd) -> Result<(), String> {
 			let sync = sync_provider.clone();
 			let watcher = Arc::new(snapshot::Watcher::new(
 				service.client(),
-				move || sync.status().is_major_syncing(),
+				move || ::ethsync::SyncProvider::status(&*sync).is_major_syncing(),
 				service.io().channel(),
 				SNAPSHOT_PERIOD,
 				SNAPSHOT_HISTORY,

util/network/src/host.rs

@@ -47,7 +47,24 @@ type Slab<T> = ::slab::Slab<T, usize>;
 const MAX_SESSIONS: usize = 1024 + MAX_HANDSHAKES;
 const MAX_HANDSHAKES: usize = 80;
 const MAX_HANDSHAKES_PER_ROUND: usize = 32;
+
+// Tokens
+const TCP_ACCEPT: usize = SYS_TIMER + 1;
+const IDLE: usize = SYS_TIMER + 2;
+const DISCOVERY: usize = SYS_TIMER + 3;
+const DISCOVERY_REFRESH: usize = SYS_TIMER + 4;
+const DISCOVERY_ROUND: usize = SYS_TIMER + 5;
+const NODE_TABLE: usize = SYS_TIMER + 6;
+const FIRST_SESSION: usize = 0;
+const LAST_SESSION: usize = FIRST_SESSION + MAX_SESSIONS - 1;
+const USER_TIMER: usize = LAST_SESSION + 256;
+const SYS_TIMER: usize = LAST_SESSION + 1;
+
+// Timeouts
 const MAINTENANCE_TIMEOUT: u64 = 1000;
+const DISCOVERY_REFRESH_TIMEOUT: u64 = 7200;
+const DISCOVERY_ROUND_TIMEOUT: u64 = 300;
+const NODE_TABLE_TIMEOUT: u64 = 300_000;
 
 #[derive(Debug, PartialEq, Clone)]
 /// Network service configuration
@@ -122,18 +139,6 @@ impl NetworkConfiguration {
 	}
 }
 
-// Tokens
-const TCP_ACCEPT: usize = SYS_TIMER + 1;
-const IDLE: usize = SYS_TIMER + 2;
-const DISCOVERY: usize = SYS_TIMER + 3;
-const DISCOVERY_REFRESH: usize = SYS_TIMER + 4;
-const DISCOVERY_ROUND: usize = SYS_TIMER + 5;
-const NODE_TABLE: usize = SYS_TIMER + 6;
-const FIRST_SESSION: usize = 0;
-const LAST_SESSION: usize = FIRST_SESSION + MAX_SESSIONS - 1;
-const USER_TIMER: usize = LAST_SESSION + 256;
-const SYS_TIMER: usize = LAST_SESSION + 1;
-
 /// Protocol handler level packet id
 pub type PacketId = u8;
 /// Protocol / handler id
@@ -564,11 +569,11 @@ impl Host {
 			discovery.init_node_list(self.nodes.read().unordered_entries());
 			discovery.add_node_list(self.nodes.read().unordered_entries());
 			*self.discovery.lock() = Some(discovery);
-			io.register_stream(DISCOVERY).expect("Error registering UDP listener");
+			try!(io.register_stream(DISCOVERY));
-			io.register_timer(DISCOVERY_REFRESH, 7200).expect("Error registering discovery timer");
+			try!(io.register_timer(DISCOVERY_REFRESH, DISCOVERY_REFRESH_TIMEOUT));
-			io.register_timer(DISCOVERY_ROUND, 300).expect("Error registering discovery timer");
+			try!(io.register_timer(DISCOVERY_ROUND, DISCOVERY_ROUND_TIMEOUT));
 		}
-		try!(io.register_timer(NODE_TABLE, 300_000));
+		try!(io.register_timer(NODE_TABLE, NODE_TABLE_TIMEOUT));
 		try!(io.register_stream(TCP_ACCEPT));
 		Ok(())
 	}
@@ -982,6 +987,7 @@ impl IoHandler<NetworkIoMessage> for Host {
 			NODE_TABLE => {
 				trace!(target: "network", "Refreshing node table");
 				self.nodes.write().clear_useless();
+				self.nodes.write().save();
 			},
 			_ => match self.timers.read().get(&token).cloned() {
 				Some(timer) => match self.handlers.read().get(&timer.protocol).cloned() {

util/network/src/node_table.rs

@@ -266,7 +266,8 @@ impl NodeTable {
 		self.useless_nodes.clear();
 	}
 
-	fn save(&self) {
+	/// Save the nodes.json file.
+	pub fn save(&self) {
 		if let Some(ref path) = self.path {
 			let mut path_buf = PathBuf::from(path);
 			if let Err(e) = fs::create_dir_all(path_buf.as_path()) {