Additional logging by default

* made the rsddns namespace log at info by default
* Added messages to the configuration errors
* made configuration error cause logging

src/config.rs

@@ -78,13 +78,23 @@ fn get_default_config() -> Config {
 }
 
 #[derive(Debug)]
-pub struct ConfigError;
+pub struct ConfigError {
+    description: String
+}
+
+impl ConfigError {
+    fn new(description: &str) -> ConfigError {
+        ConfigError {
+            description: String::from(description)
+        }
+    }
+}
 
 impl Error for ConfigError {}
 
 impl fmt::Display for ConfigError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "Configuration Error")
+        write!(f, "Configuration Error: {}", self.description)
     }
 }
 
@@ -92,7 +102,7 @@ fn read_config(yaml_str: &str) -> Result<Config, ConfigError> {
     match serde_yaml::from_str(yaml_str) {
         Ok(v) => Result::Ok(v),
         // File wasn't valid Config/YAML
-        Err(_e) => Result::Err(ConfigError{})
+        Err(_e) => Result::Err(ConfigError::new("Configuration file was invalid"))
     }
 }
 
@@ -106,14 +116,14 @@ pub fn load_config(path: &str) -> Result<Config, ConfigError> {
                         read_config(&contents)
                     } else {
                         // File was empty
-                        Result::Err(ConfigError{})
+                        Result::Err(ConfigError::new("Configuration file was empty"))
                     }
                 },
                 // File couldn't be read
-                Err(_e) => Result::Err(ConfigError{})
+                Err(_e) => Result::Err(ConfigError::new("Configuration file could not be read"))
             }
         },
         // File Doesn't exist
-        Err(_e) => Result::Err(ConfigError{})
+        Err(_e) => Result::Err(ConfigError::new(&format!("Configuration file doesn't exist \"{}\"", path)))
     }
 }

src/main.rs

@@ -32,7 +32,7 @@ lazy_static! {
 fn main() {
     match std::env::var("RUST_LOG") {
         Ok(_) => (),
-        Err(_) => std::env::set_var("RUST_LOG", "actix_web=info"),
+        Err(_) => std::env::set_var("RUST_LOG", "error,actix_web=info,rsddns=info")
     }
     env_logger::init();
 
@@ -75,7 +75,10 @@ fn main() {
     let config_path: &str = args.value_of("config").unwrap_or("/etc/rsddns/rsddns.yml");
     let config = match config::load_config(config_path) {
         Ok(c) => Option::Some(c),
-        Err(_e) => Option::None
+        Err(e) => {
+            error!("{}", e);
+            Option::None
+        }
     };
 
     let host = String::from(match &config {