Revert to v0.1.192 - fix agent hang issue

- Remove zbus dependency from agent
- Replace D-Bus Connection calls with systemctl show commands
- Fix agent hang by eliminating blocking D-Bus operations
- get_unit_property now uses systemctl show with property flags
- Memory, disk usage, and nginx config queries use systemctl
- Simpler, more reliable service monitoring

Cargo.lock

@@ -279,7 +279,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.186"
+version = "0.1.191"
 dependencies = [
  "anyhow",
  "chrono",
@@ -301,7 +301,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.186"
+version = "0.1.191"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -324,7 +324,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.186"
+version = "0.1.191"
 dependencies = [
  "chrono",
  "serde",

agent/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-agent"
-version = "0.1.187"
+version = "0.1.192"
 edition = "2021"
 
 [dependencies]

agent/src/collectors/disk.rs

@@ -117,7 +117,7 @@ impl DiskCollector {
         let mut cmd = Command::new("lsblk");
         cmd.args(&["-rn", "-o", "NAME,MOUNTPOINT"]);
 
-        let output = run_command_with_timeout(cmd, 5).await
+        let output = run_command_with_timeout(cmd, 2).await
             .map_err(|e| CollectorError::SystemRead {
                 path: "block devices".to_string(),
                 error: e.to_string(),
@@ -427,7 +427,7 @@ impl DiskCollector {
             cmd.args(&["-a", &format!("/dev/{}", drive_name)]);
         }
 
-        let output = run_command_with_timeout(cmd, 10).await
+        let output = run_command_with_timeout(cmd, 3).await
             .map_err(|e| CollectorError::SystemRead {
                 path: format!("SMART data for {}", drive_name),
                 error: e.to_string(),
@@ -764,7 +764,7 @@ impl DiskCollector {
     fn get_drive_info_for_path(&self, path: &str) -> anyhow::Result<PoolDrive> {
         // Use lsblk to find the backing device with timeout
         let output = Command::new("timeout")
-            .args(&["5", "lsblk", "-rn", "-o", "NAME,MOUNTPOINT"])
+            .args(&["2", "lsblk", "-rn", "-o", "NAME,MOUNTPOINT"])
             .output()
             .map_err(|e| anyhow::anyhow!("Failed to run lsblk: {}", e))?;
             

agent/src/collectors/memory.rs

@@ -105,8 +105,8 @@ impl MemoryCollector {
             return Ok(());
         }
 
-        // Get usage data for all tmpfs mounts at once using df (with 3 second timeout)
+        // Get usage data for all tmpfs mounts at once using df (with 2 second timeout)
-        let mut df_args = vec!["3", "df", "--output=target,size,used", "--block-size=1"];
+        let mut df_args = vec!["2", "df", "--output=target,size,used", "--block-size=1"];
         df_args.extend(tmpfs_mounts.iter().map(|s| s.as_str()));
 
         let df_output = std::process::Command::new("timeout")

agent/src/collectors/network.rs

@@ -110,7 +110,7 @@ impl NetworkCollector {
         // Parse VLAN configuration
         let vlan_map = Self::parse_vlan_config();
 
-        match Command::new("timeout").args(["3", "ip", "-j", "addr"]).output() {
+        match Command::new("timeout").args(["2", "ip", "-j", "addr"]).output() {
             Ok(output) if output.status.success() => {
                 let json_str = String::from_utf8_lossy(&output.stdout);
 

agent/src/collectors/systemd.rs

@@ -113,6 +113,7 @@ impl SystemdCollector {
                                 name: site_name.clone(),
                                 service_status: self.calculate_service_status(&site_name, &site_status),
                                 metrics,
+                                service_type: "nginx_site".to_string(),
                             });
                         }
                     }
@@ -128,12 +129,13 @@ impl SystemdCollector {
                                 name: container_name.clone(),
                                 service_status: self.calculate_service_status(&container_name, &container_status),
                                 metrics,
+                                service_type: "container".to_string(),
                             });
                         }
 
                         // Add Docker images
                         let docker_images = self.get_docker_images();
-                        for (image_name, image_status, image_size_str, image_size_mb) in docker_images {
+                        for (image_name, image_status, image_size_mb) in docker_images {
                             let mut metrics = Vec::new();
                             metrics.push(SubServiceMetric {
                                 label: "size".to_string(),
@@ -142,9 +144,10 @@ impl SystemdCollector {
                             });
 
                             sub_services.push(SubServiceData {
-                                name: format!("{} ({})", image_name, image_size_str),
+                                name: image_name.to_string(),
                                 service_status: self.calculate_service_status(&image_name, &image_status),
                                 metrics,
+                                service_type: "image".to_string(),
                             });
                         }
                     }
@@ -251,18 +254,18 @@ impl SystemdCollector {
 
     /// Auto-discover interesting services to monitor
     fn discover_services_internal(&self) -> Result<(Vec<String>, std::collections::HashMap<String, ServiceStatusInfo>)> {
-        // First: Get all service unit files (with 5 second timeout)
+        // First: Get all service unit files (with 3 second timeout)
         let unit_files_output = Command::new("timeout")
-            .args(&["5", "systemctl", "list-unit-files", "--type=service", "--no-pager", "--plain"])
+            .args(&["3", "systemctl", "list-unit-files", "--type=service", "--no-pager", "--plain"])
             .output()?;
 
         if !unit_files_output.status.success() {
             return Err(anyhow::anyhow!("systemctl list-unit-files command failed"));
         }
 
-        // Second: Get runtime status of all units (with 5 second timeout)
+        // Second: Get runtime status of all units (with 3 second timeout)
         let units_status_output = Command::new("timeout")
-            .args(&["5", "systemctl", "list-units", "--type=service", "--all", "--no-pager", "--plain"])
+            .args(&["3", "systemctl", "list-units", "--type=service", "--all", "--no-pager", "--plain"])
             .output()?;
 
         if !units_status_output.status.success() {
@@ -358,16 +361,16 @@ impl SystemdCollector {
             }
         }
 
-        // Fallback to systemctl if not in cache (with 3 second timeout)
+        // Fallback to systemctl if not in cache (with 2 second timeout)
         let output = Command::new("timeout")
-            .args(&["3", "systemctl", "is-active", &format!("{}.service", service)])
+            .args(&["2", "systemctl", "is-active", &format!("{}.service", service)])
             .output()?;
 
         let active_status = String::from_utf8(output.stdout)?.trim().to_string();
 
-        // Get more detailed info (with 3 second timeout)
+        // Get more detailed info (with 2 second timeout)
         let output = Command::new("timeout")
-            .args(&["3", "systemctl", "show", &format!("{}.service", service), "--property=LoadState,ActiveState,SubState"])
+            .args(&["2", "systemctl", "show", &format!("{}.service", service), "--property=LoadState,ActiveState,SubState"])
             .output()?;
 
         let detailed_info = String::from_utf8(output.stdout)?;
@@ -427,9 +430,9 @@ impl SystemdCollector {
             return Ok(0.0);
         }
 
-        // No configured path - try to get WorkingDirectory from systemctl (with 3 second timeout)
+        // No configured path - try to get WorkingDirectory from systemctl (with 2 second timeout)
         let output = Command::new("timeout")
-            .args(&["3", "systemctl", "show", &format!("{}.service", service_name), "--property=WorkingDirectory"])
+            .args(&["2", "systemctl", "show", &format!("{}.service", service_name), "--property=WorkingDirectory"])
             .output()
             .map_err(|e| CollectorError::SystemRead {
                 path: format!("WorkingDirectory for {}", service_name),
@@ -449,15 +452,15 @@ impl SystemdCollector {
         Ok(0.0)
     }
     
-    /// Get size of a directory in GB (with 5 second timeout)
+    /// Get size of a directory in GB (with 2 second timeout)
     async fn get_directory_size(&self, path: &str) -> Option<f32> {
         use super::run_command_with_timeout;
 
-        // Use -s (summary) and --apparent-size for speed, 5 second timeout
+        // Use -s (summary) and --apparent-size for speed, 2 second timeout
         let mut cmd = Command::new("sudo");
         cmd.args(&["du", "-s", "--apparent-size", "--block-size=1", path]);
 
-        let output = run_command_with_timeout(cmd, 5).await.ok()?;
+        let output = run_command_with_timeout(cmd, 2).await.ok()?;
 
         if !output.status.success() {
             // Log permission errors for debugging but don't spam logs
@@ -783,9 +786,9 @@ impl SystemdCollector {
         let mut containers = Vec::new();
 
         // Check if docker is available (cm-agent user is in docker group)
-        // Use -a to show ALL containers (running and stopped) with 5 second timeout
+        // Use -a to show ALL containers (running and stopped) with 3 second timeout
         let output = Command::new("timeout")
-            .args(&["5", "docker", "ps", "-a", "--format", "{{.Names}},{{.Status}}"])
+            .args(&["3", "docker", "ps", "-a", "--format", "{{.Names}},{{.Status}}"])
             .output();
 
         let output = match output {
@@ -824,11 +827,11 @@ impl SystemdCollector {
     }
 
     /// Get docker images as sub-services
-    fn get_docker_images(&self) -> Vec<(String, String, String, f32)> {
+    fn get_docker_images(&self) -> Vec<(String, String, f32)> {
         let mut images = Vec::new();
-        // Check if docker is available (cm-agent user is in docker group) with 5 second timeout
+        // Check if docker is available (cm-agent user is in docker group) with 3 second timeout
         let output = Command::new("timeout")
-            .args(&["5", "docker", "images", "--format", "{{.Repository}}:{{.Tag}},{{.Size}}"])
+            .args(&["3", "docker", "images", "--format", "{{.Repository}}:{{.Tag}},{{.Size}}"])
             .output();
 
         let output = match output {
@@ -865,9 +868,8 @@ impl SystemdCollector {
                 let size_mb = self.parse_docker_size(size_str);
 
                 images.push((
-                    format!("image_{}", image_name),
+                    image_name.to_string(),
-                    "active".to_string(), // Images are always "active" (present)
+                    "inactive".to_string(), // Images are informational - use inactive for neutral display
-                    size_str.to_string(),
                     size_mb
                 ));
             }

dashboard/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard"
-version = "0.1.187"
+version = "0.1.192"
 edition = "2021"
 
 [dependencies]

dashboard/src/ui/widgets/services.rs

@@ -32,6 +32,7 @@ struct ServiceInfo {
     disk_gb: Option<f32>,
     metrics: Vec<(String, f32, Option<String>)>, // (label, value, unit)
     widget_status: Status,
+    service_type: String, // "nginx_site", "container", "image", or empty for parent services
 }
 
 impl ServicesWidget {
@@ -179,6 +180,35 @@ impl ServicesWidget {
         };
         let tree_symbol = if is_last { "└─" } else { "├─" };
 
+        // Docker images use docker whale icon
+        if info.service_type == "image" {
+            vec![
+                // Indentation and tree prefix
+                ratatui::text::Span::styled(
+                    format!("  {} ", tree_symbol),
+                    Typography::tree(),
+                ),
+                // Docker icon (simple character for performance)
+                ratatui::text::Span::styled(
+                    "D ".to_string(),
+                    Style::default().fg(Theme::highlight()).bg(Theme::background()),
+                ),
+                // Service name
+                ratatui::text::Span::styled(
+                    format!("{:<18} ", short_name),
+                    Style::default()
+                        .fg(Theme::secondary_text())
+                        .bg(Theme::background()),
+                ),
+                // Status/metrics text
+                ratatui::text::Span::styled(
+                    status_str,
+                    Style::default()
+                        .fg(Theme::secondary_text())
+                        .bg(Theme::background()),
+                ),
+            ]
+        } else {
             vec![
                 // Indentation and tree prefix
                 ratatui::text::Span::styled(
@@ -206,6 +236,7 @@ impl ServicesWidget {
                 ),
             ]
         }
+    }
 
     /// Move selection up
     pub fn select_previous(&mut self) {
@@ -282,6 +313,7 @@ impl Widget for ServicesWidget {
                 disk_gb: Some(service.disk_gb),
                 metrics: Vec::new(), // Parent services don't have custom metrics
                 widget_status: service.service_status,
+                service_type: String::new(), // Parent services have no type
             };
             self.parent_services.insert(service.name.clone(), parent_info);
 
@@ -299,6 +331,7 @@ impl Widget for ServicesWidget {
                         disk_gb: None,   // Not used for sub-services
                         metrics,
                         widget_status: sub_service.service_status,
+                        service_type: sub_service.service_type.clone(),
                     };
                     sub_list.push((sub_service.name.clone(), sub_info));
                 }
@@ -342,6 +375,7 @@ impl ServicesWidget {
                                     disk_gb: None,
                                     metrics: Vec::new(),
                                     widget_status: Status::Unknown,
+                                    service_type: String::new(),
                                 });
 
                         if metric.name.ends_with("_status") {
@@ -377,6 +411,7 @@ impl ServicesWidget {
                                     disk_gb: None,
                                     metrics: Vec::new(),
                                     widget_status: Status::Unknown,
+                                    service_type: String::new(), // Unknown type in legacy path
                                 },
                             ));
                             &mut sub_service_list.last_mut().unwrap().1

shared/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-shared"
-version = "0.1.187"
+version = "0.1.192"
 edition = "2021"
 
 [dependencies]

shared/src/agent_data.rs

@@ -149,6 +149,9 @@ pub struct SubServiceData {
     pub name: String,
     pub service_status: Status,
     pub metrics: Vec<SubServiceMetric>,
+    /// Type of sub-service: "nginx_site", "container", "image"
+    #[serde(default)]
+    pub service_type: String,
 }
 
 /// Individual metric for a sub-service