add command to get the state of all rooms

src/cli.rs

@@ -13,6 +13,7 @@ use crate::{
 };
 
 mod check_config;
+mod get_room_states;
 mod serve;
 
 /// Command line arguments
@@ -33,6 +34,11 @@ pub(crate) enum Command {
 
     /// Check the configuration file for syntax and semantic errors.
     CheckConfig(CheckConfigArgs),
+
+    /// Write the state of all rooms as JSON to stdout.
+    ///
+    /// This is primarily useful for debugging.
+    GetRoomStates(GetRoomStatesArgs),
 }
 
 #[derive(clap::Args)]
@@ -88,6 +94,15 @@ pub(crate) struct ServeArgs {
     pub(crate) config: ConfigArg,
 }
 
+#[derive(clap::Args)]
+pub(crate) struct GetRoomStatesArgs {
+    #[clap(flatten)]
+    pub(crate) config: ConfigArg,
+
+    #[clap(flatten)]
+    observability: ObservabilityArgs,
+}
+
 impl Args {
     pub(crate) async fn run(self) -> Result<(), error::Main> {
         if let Some((format, filter)) = self.command.cli_observability_args() {
@@ -99,6 +114,7 @@ impl Args {
             Command::CheckConfig(args) => {
                 check_config::run(args.config).await?;
             }
+            Command::GetRoomStates(args) => get_room_states::run(args).await?,
         }
         Ok(())
     }
@@ -113,6 +129,10 @@ impl Command {
                 args.observability.log_format,
                 args.observability.log_filter.clone(),
             )),
+            Command::GetRoomStates(args) => Some((
+                args.observability.log_format,
+                args.observability.log_filter.clone(),
+            )),
             Command::Serve(_) => None,
         }
     }