Add echo method for testing / documentation.

deepwell/src/api.rs

@@ -174,6 +174,7 @@ async fn build_module(app_state: ServerState) -> anyhow::Result<RpcModule<Server
 
     // Miscellaneous
     register!("ping", ping);
+    register!("echo", echo);
     register!("error", yield_error);
     register!("version", version);
     register!("version_full", full_version);

deepwell/src/endpoints/misc.rs

@@ -21,6 +21,7 @@
 use super::prelude::*;
 use crate::info;
 use sea_orm::{ConnectionTrait, DatabaseBackend, Statement};
+use serde_json::Value as JsonValue;
 use std::path::PathBuf;
 use wikidot_normalize::normalize;
 
@@ -57,6 +58,16 @@ pub async fn ping(
     Ok("Pong!")
 }
 
+pub async fn echo(
+    _ctx: &ServiceContext<'_>,
+    params: Params<'static>,
+) -> Result<JsonValue> {
+    // Just write out whatever JSON value they put in
+    let data: JsonValue = params.parse()?;
+    info!("Got echo request, sending back to caller");
+    Ok(data)
+}
+
 /// Method which always returns an error.
 /// For testing.
 pub async fn yield_error(