Move config related code into config.rs

To continue with code separation to improve readability.

src/config.rs

@@ -0,0 +1,52 @@
+use crate::{Hook, IpFilter};
+use anyhow::{bail, Result};
+use log::info;
+use serde::{Deserialize, Serialize};
+use std::{collections::BTreeMap, fs::File};
+
+#[derive(Debug, Deserialize, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct MetricsConfig {
+    pub enabled: bool,
+    pub ip_filter: Option<IpFilter>,
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct Config {
+    pub metrics: Option<MetricsConfig>,
+    pub hooks: BTreeMap<String, Hook>,
+}
+
+pub fn get_config() -> Result<File> {
+    // Look for config in CWD..
+    if let Ok(config) = File::open("config.yml") {
+        info!("Loading configuration from `./config.yml`");
+
+        return Ok(config);
+    }
+
+    // ..look for user path config..
+    if let Some(mut path) = dirs::config_dir() {
+        path.push("webhookey/config.yml");
+
+        if let Ok(config) = File::open(&path) {
+            info!(
+                "Loading configuration from `{}`",
+                path.to_str().unwrap_or("<path unprintable>"),
+            );
+
+            return Ok(config);
+        }
+    }
+
+    // ..look for systemwide config..
+    if let Ok(config) = File::open("/etc/webhookey/config.yml") {
+        info!("Loading configuration from `/etc/webhookey/config.yml`");
+
+        return Ok(config);
+    }
+
+    // ..you had your chance.
+    bail!("No configuration file found.");
+}

src/main.rs

@@ -1,9 +1,11 @@
 mod cli;
+mod config;
 mod filters;
 mod metrics;
 
 use crate::{
     cli::Opts,
+    config::Config,
     filters::{FilterType, IpFilter},
     metrics::Metrics,
 };
@@ -50,21 +52,7 @@ pub enum WebhookeyError {
 
 #[derive(Debug, Deserialize, Serialize)]
 #[serde(deny_unknown_fields)]
-struct MetricsConfig {
-    enabled: bool,
-    ip_filter: Option<IpFilter>,
-}
-
-#[derive(Debug, Deserialize, Serialize)]
-#[serde(deny_unknown_fields)]
-pub struct Config {
-    metrics: Option<MetricsConfig>,
-    hooks: BTreeMap<String, Hook>,
-}
-
-#[derive(Debug, Deserialize, Serialize)]
-#[serde(deny_unknown_fields)]
-struct Hook {
+pub struct Hook {
     command: String,
     signature: String,
     ip_filter: Option<IpFilter>,
@@ -266,39 +254,6 @@ pub fn get_string(data: &serde_json::Value) -> Result<String, WebhookeyError> {
     }
 }
 
-fn get_config() -> Result<File> {
-    // Look for config in CWD..
-    if let Ok(config) = File::open("config.yml") {
-        info!("Loading configuration from `./config.yml`");
-
-        return Ok(config);
-    }
-
-    // ..look for user path config..
-    if let Some(mut path) = dirs::config_dir() {
-        path.push("webhookey/config.yml");
-
-        if let Ok(config) = File::open(&path) {
-            info!(
-                "Loading configuration from `{}`",
-                path.to_str().unwrap_or("<path unprintable>"),
-            );
-
-            return Ok(config);
-        }
-    }
-
-    // ..look for systemwide config..
-    if let Ok(config) = File::open("/etc/webhookey/config.yml") {
-        info!("Loading configuration from `/etc/webhookey/config.yml`");
-
-        return Ok(config);
-    }
-
-    // ..you had your chance.
-    bail!("No configuration file found.");
-}
-
 #[rocket::async_trait]
 impl<'r> FromData<'r> for Hooks {
     type Error = WebhookeyError;
@@ -405,7 +360,7 @@ async fn main() -> Result<()> {
 
     let config: Config = match cli.config {
         Some(config) => serde_yaml::from_reader(BufReader::new(File::open(config)?))?,
-        _ => serde_yaml::from_reader(BufReader::new(get_config()?))?,
+        _ => serde_yaml::from_reader(BufReader::new(config::get_config()?))?,
     };
 
     trace!("Parsed configuration:\n{}", serde_yaml::to_string(&config)?);
@@ -429,6 +384,7 @@ async fn main() -> Result<()> {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::config::MetricsConfig;
     use filters::{AddrType, HeaderFilter, JsonFilter};
     use regex::Regex;
     use rocket::{