Add derive Debug, closing #17

src/cdc.rs

@@ -2,7 +2,7 @@
 use super::*;
 
 /// A handler of a CDC ACM(Abstract Control Model)
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 pub struct UsbCdcAcmHandler {
     pub tx_buffer: Vec<u8>,
 }

src/device.rs

@@ -1,7 +1,7 @@
 use super::*;
 use rusb::Version as rusbVersion;
 
-#[derive(Clone, Default)]
+#[derive(Clone, Default, Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct Version {
     pub major: u8,
@@ -37,7 +37,7 @@ impl From<u16> for Version {
 }
 
 /// Represent a USB device
-#[derive(Clone, Default)]
+#[derive(Clone, Default, Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize))]
 pub struct UsbDevice {
     pub path: String,
@@ -529,7 +529,7 @@ impl UsbDevice {
 }
 
 /// A handler for URB targeting the device
-pub trait UsbDeviceHandler {
+pub trait UsbDeviceHandler: std::fmt::Debug {
     /// Handle a URB(USB Request Block) targeting at this device
     ///
     /// When the lower 4 bits of `bmRequestType` is zero and the URB is not handled by the library, this function is called.

src/hid.rs

@@ -5,15 +5,15 @@ use super::*;
 // HID 1.11: https://www.usb.org/sites/default/files/documents/hid1_11.pdf
 // HID Usage Tables 1.12: https://www.usb.org/sites/default/files/documents/hut1_12v2.pdf
 
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 enum UsbHidKeyboardHandlerState {
     Idle,
     KeyDown,
 }
 
 /// A handler of a HID keyboard
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct UsbHidKeyboardHandler {
     pub report_descriptor: Vec<u8>,
@@ -24,7 +24,7 @@ pub struct UsbHidKeyboardHandler {
 /// A report of a HID keyboard
 ///
 /// For definition of key codes, see [HID Usage Tables](https://www.usb.org/sites/default/files/documents/hut1_12v2.pdf)
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct UsbHidKeyboardReport {
     /// Key modifier

src/host.rs

@@ -2,7 +2,7 @@
 use super::*;
 
 /// A handler to pass requests to a rusb USB device of the host
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 pub struct RusbUsbHostInterfaceHandler {
     handle: Arc<Mutex<DeviceHandle<GlobalContext>>>,
 }
@@ -93,7 +93,7 @@ impl UsbInterfaceHandler for RusbUsbHostInterfaceHandler {
 }
 
 /// A handler to pass requests to a USB device of the host
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 pub struct RusbUsbHostDeviceHandler {
     handle: Arc<Mutex<DeviceHandle<GlobalContext>>>,
 }
@@ -155,6 +155,14 @@ pub struct NusbUsbHostInterfaceHandler {
     handle: Arc<Mutex<nusb::Interface>>,
 }
 
+impl std::fmt::Debug for NusbUsbHostInterfaceHandler {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("NusbUsbHostInterfaceHandler")
+            .field("handle", &"Opaque")
+            .finish()
+    }
+}
+
 impl NusbUsbHostInterfaceHandler {
     pub fn new(handle: Arc<Mutex<nusb::Interface>>) -> Self {
         Self { handle }
@@ -231,6 +239,14 @@ pub struct NusbUsbHostDeviceHandler {
     handle: Arc<Mutex<nusb::Device>>,
 }
 
+impl std::fmt::Debug for NusbUsbHostDeviceHandler {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("NusbUsbHostDeviceHandler")
+            .field("handle", &"Opaque")
+            .finish()
+    }
+}
+
 impl NusbUsbHostDeviceHandler {
     pub fn new(handle: Arc<Mutex<nusb::Device>>) -> Self {
         Self { handle }

src/interface.rs

@@ -1,7 +1,7 @@
 use super::*;
 
 /// Represent a USB interface
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize))]
 pub struct UsbInterface {
     pub interface_class: u8,
@@ -16,7 +16,7 @@ pub struct UsbInterface {
 }
 
 /// A handler of a custom usb interface
-pub trait UsbInterfaceHandler {
+pub trait UsbInterfaceHandler: std::fmt::Debug {
     /// Return the class specific descriptor which is inserted between interface descriptor and endpoint descriptor
     fn get_class_specific_descriptor(&self) -> Vec<u8>;
 

src/lib.rs

@@ -39,7 +39,7 @@ pub use util::*;
 use crate::usbip_protocol::{UsbIpResponse, USBIP_RET_SUBMIT, USBIP_RET_UNLINK};
 
 /// Main struct of a USB/IP server
-#[derive(Default)]
+#[derive(Default, Debug)]
 pub struct UsbIpServer {
     available_devices: RwLock<Vec<UsbDevice>>,
     used_devices: RwLock<HashMap<String, UsbDevice>>,