feat(drive_monitor): restart LLaMA servers on llm- config changes

Add logic to detect changes in llm-related configuration properties when syncing gbot configs. If any llm- keys differ from stored values, automatically restart LLaMA servers to apply updates. This ensures model servers stay in sync with configuration changes without unnecessary restarts.

src/drive_monitor/mod.rs

@@ -232,9 +232,13 @@ impl DriveMonitor {
     }
 
     async fn check_gbot(&self, client: &Client) -> Result<(), Box<dyn Error + Send + Sync>> {
+ 
+        let config_manager = ConfigManager::new(Arc::clone(&self.state.conn));
+
         let mut continuation_token = None;
 
         loop {
+
             let list_objects = client
                 .list_objects_v2()
                 .bucket(&self.bucket_name.to_lowercase())
@@ -279,21 +283,54 @@ impl DriveMonitor {
                             response.content_length().unwrap_or(0)
                         );
 
+
                         let bytes = response.body.collect().await?.into_bytes();
                         debug!("Collected {} bytes for {}", bytes.len(), path);
                         let csv_content = String::from_utf8(bytes.to_vec())
                             .map_err(|e| format!("UTF-8 error in {}: {}", path, e))?;
                         debug!("Found {}: {} bytes", path, csv_content.len());
 
-                        let config_manager = ConfigManager::new(Arc::clone(&self.state.conn));
-                        if let Err(e) = config_manager.sync_gbot_config(&self.bot_id, &csv_content)
-                        {
-                            error!(
-                                "Failed to sync config for bot {} {}: {}",
-                                path, self.bot_id, e
-                            );
-                        } else {
-                            info!("Successfully synced config for bot {}", self.bot_id);
+
+
+                            // Restart LLaMA servers only if llm- properties changed
+                            let llm_lines: Vec<_> = csv_content
+                                .lines()
+                                .filter(|line| line.trim_start().starts_with("llm-"))
+                                .collect();
+
+                            if !llm_lines.is_empty() {
+                                use crate::llm_legacy::llm_local::ensure_llama_servers_running;
+                                let mut restart_needed = false;
+
+                                for line in llm_lines {
+                                    let parts: Vec<&str> = line.split(',').collect();
+                                    if parts.len() >= 2 {
+                                        let key = parts[0].trim();
+                                        let new_value = parts[1].trim();
+                                        match config_manager.get_config(&self.bot_id, key, None) {
+                                            Ok(old_value) => {
+                                                if old_value != new_value {
+                                                    info!("Detected change in {} (old: {}, new: {})", key, old_value, new_value);
+                                                    restart_needed = true;
+                                                }
+                                            }
+                                            Err(_) => {
+                                                info!("New llm- property detected: {}", key);
+                                                restart_needed = true;
+                                            }
+                                        }
+                                    }
+                                }
+
+                                if restart_needed {
+                                    info!("Detected llm- configuration change, restarting LLaMA servers...");
+                                    if let Err(e) = ensure_llama_servers_running(&self.state).await {
+                                        error!("Failed to restart LLaMA servers after llm- config change: {}", e);
+                                    }
+                                } else {
+                                    info!("No llm- property changes detected; skipping LLaMA server restart.");
+                                }
+                            config_manager.sync_gbot_config(&self.bot_id, &csv_content);
                         }
                     }
                     Err(e) => {

src/llm_legacy/llm_local.rs

@@ -90,6 +90,20 @@ pub async fn ensure_llama_servers_running(
     info!("   Embedding Model: {}", embedding_model);
     info!("   LLM Server Path: {}", llm_server_path);
 
+
+    // Restart any existing llama-server processes before starting new ones
+    info!("🔁 Restarting any existing llama-server processes...");
+    if let Err(e) = tokio::process::Command::new("sh")
+        .arg("-c")
+        .arg("pkill -f llama-server || true")
+        .spawn()
+    {
+        error!("Failed to execute pkill for llama-server: {}", e);
+    } else {
+        sleep(Duration::from_secs(2)).await;
+        info!("✅ Existing llama-server processes terminated (if any)");
+    }
+
     // Check if servers are already running
     let llm_running = is_server_running(&llm_url).await;
     let embedding_running = is_server_running(&embedding_url).await;
@@ -99,6 +113,7 @@ pub async fn ensure_llama_servers_running(
         return Ok(());
     }
 
+
     // Start servers that aren't running
     let mut tasks = vec![];
 
@@ -620,4 +635,3 @@ pub async fn embeddings_local(
 
     Ok(HttpResponse::Ok().json(openai_response))
 }
-

templates/default.gbai/default.gbot/config.csv

@@ -16,7 +16,7 @@ llm-server-path,botserver-stack/bin/llm/build/bin
 llm-server-host,0.0.0.0
 llm-server-port,8081
 llm-server-gpu-layers,35
-llm-server-n-moe,16
+llm-server-n-moe,23
 llm-server-ctx-size,16000
 llm-server-parallel,8
 llm-server-cont-batching,true