Split code for modular compilation

src/util/config.rs

@@ -0,0 +1,66 @@
+use std::io::Read;
+use std::net::SocketAddr;
+use std::path::PathBuf;
+
+use serde::Deserialize;
+
+use crate::error::Error;
+
+#[derive(Deserialize, Debug, Clone)]
+pub struct Config {
+	pub metadata_dir: PathBuf,
+	pub data_dir: PathBuf,
+
+	pub api_bind_addr: SocketAddr,
+	pub rpc_bind_addr: SocketAddr,
+
+	pub bootstrap_peers: Vec<SocketAddr>,
+
+	#[serde(default = "default_max_concurrent_rpc_requests")]
+	pub max_concurrent_rpc_requests: usize,
+
+	#[serde(default = "default_block_size")]
+	pub block_size: usize,
+
+	#[serde(default = "default_replication_factor")]
+	pub meta_replication_factor: usize,
+
+	#[serde(default = "default_epidemic_factor")]
+	pub meta_epidemic_factor: usize,
+
+	#[serde(default = "default_replication_factor")]
+	pub data_replication_factor: usize,
+
+	pub rpc_tls: Option<TlsConfig>,
+}
+
+#[derive(Deserialize, Debug, Clone)]
+pub struct TlsConfig {
+	pub ca_cert: String,
+	pub node_cert: String,
+	pub node_key: String,
+}
+
+fn default_max_concurrent_rpc_requests() -> usize {
+	12
+}
+fn default_block_size() -> usize {
+	1048576
+}
+fn default_replication_factor() -> usize {
+	3
+}
+fn default_epidemic_factor() -> usize {
+	3
+}
+
+pub fn read_config(config_file: PathBuf) -> Result<Config, Error> {
+	let mut file = std::fs::OpenOptions::new()
+		.read(true)
+		.open(config_file.as_path())?;
+
+	let mut config = String::new();
+	file.read_to_string(&mut config)?;
+
+	Ok(toml::from_str(&config)?)
+}