bot: apply service filters

src/bot.rs

@@ -100,11 +100,18 @@ impl BadNewsBot {
         const KEY_MESSAGE: &str = "MESSAGE";
 
         if let Some(unit) = record.get(KEY_UNIT) {
-            if !self.config.units.iter().map(|u| &u.name).any(|name| name == unit) {
-                return;
-            }
+            let unit_config = match self.config.units.iter().find(|u| &u.name == unit) {
+                Some(config) => config,
+                None => return,
+            };
 
             let message = record.get(KEY_MESSAGE);
+            if let Some(filter) = &unit_config.filter {
+                if message.is_none() || !filter.is_match(message.unwrap()) {
+                    return;
+                }
+            }
+
             let message = format!(
                 "[{}] {}",
                 unit.strip_suffix(".service").unwrap_or(unit),

src/config.rs

@@ -24,12 +24,12 @@ pub struct Config {
     /// invitations to this room.
     pub room_id: RoomId,
     /// Units to watch for logs
+    #[serde(deserialize_with = "list_of_units")]
     pub units: Vec<Unit>,
 }
 
 /// Holds a single unit's configuration.
 #[derive(Clone, Debug, Deserialize)]
-#[serde(from = "SerializedUnit")]
 pub struct Unit {
     /// Can be serialized from a string only instead of a map.
     pub name: String,
@@ -67,6 +67,14 @@ impl FromStr for Unit {
     }
 }
 
+fn list_of_units<'de, D>(deserializer: D) -> Result<Vec<Unit>, D::Error>
+where
+    D: Deserializer<'de>,
+{
+    let units: Vec<SerializedUnit> = Deserialize::deserialize(deserializer)?;
+    Ok(units.into_iter().map(From::from).collect())
+}
+
 fn unit_name_or_struct<'de, T, D>(deserializer: D) -> Result<T, D::Error>
 where
     T: Deserialize<'de> + FromStr<Err = Void>,