5 files changed, 293 insertions, 46 deletions

diff --git a/crates/system_action/Cargo.toml b/crates/system_action/Cargo.toml
index ee4f774..54ae454 100644
--- a/crates/system_action/Cargo.toml
+++ b/crates/system_action/Cargo.toml
@@ -9,3 +9,7 @@ action_system_macros = { path = "action_macros" }
 
 # Serialization
 serde = { version = "1.0.219", features = ["derive"] }
+serde_json = "1.0.140"
+
+# Async & Networking
+tokio = { version = "1.46.1", features = ["full"] }
diff --git a/crates/system_action/action_macros/Cargo.toml b/crates/system_action/action_macros/Cargo.toml
index 5ae14fa..869dcde 100644
--- a/crates/system_action/action_macros/Cargo.toml
+++ b/crates/system_action/action_macros/Cargo.toml
@@ -13,3 +13,7 @@ string_proc = { path = "../../utils/string_proc" }
 syn = { version = "2.0", features = ["full", "extra-traits"] }
 quote = "1.0"
 proc-macro2 = "1.0"
+
+# Serialization
+serde = { version = "1.0.219", features = ["derive"] }
+serde_json = "1.0.140"
diff --git a/crates/system_action/action_macros/src/lib.rs b/crates/system_action/action_macros/src/lib.rs
index a7de9b6..ce50073 100644
--- a/crates/system_action/action_macros/src/lib.rs
+++ b/crates/system_action/action_macros/src/lib.rs
@@ -37,6 +37,9 @@ fn generate_action_struct(input_fn: ItemFn, _is_local: bool) -> proc_macro2::Tok
 
     let action_name_ident = &fn_name;
 
+    let register_this_action = quote::format_ident!("register_{}", action_name_ident);
+    let proc_this_action = quote::format_ident!("proc_{}", action_name_ident);
+
     quote! {
         #[derive(Debug, Clone, Default)]
         #fn_vis struct #struct_name;
@@ -55,22 +58,28 @@ fn generate_action_struct(input_fn: ItemFn, _is_local: bool) -> proc_macro2::Tok
             }
         }
 
-        impl #struct_name {
-            #fn_vis fn register_to_pool(pool: &mut action_system::action_pool::ActionPool) {
-                pool.register::<#struct_name, #arg_type, #return_type>();
-            }
+        #fn_vis fn #register_this_action(pool: &mut action_system::action_pool::ActionPool) {
+            pool.register::<#struct_name, #arg_type, #return_type>();
+        }
 
-            #fn_vis async fn process_at_pool<'a>(
-                pool: &'a action_system::action_pool::ActionPool,
-                ctx: action_system::action::ActionContext,
-                #arg_param_name: #arg_type
-            ) -> Result<#return_type, tcp_connection::error::TcpTargetError> {
-                pool.process::<#arg_type, #return_type>(
-                    Box::leak(string_proc::snake_case!(stringify!(#action_name_ident)).into_boxed_str()),
-                    ctx,
-                    #arg_param_name
-                ).await
-            }
+        #fn_vis async fn #proc_this_action(
+            pool: &action_system::action_pool::ActionPool,
+            ctx: action_system::action::ActionContext,
+            #arg_param_name: #arg_type
+        ) -> Result<#return_type, tcp_connection::error::TcpTargetError> {
+            let args_json = serde_json::to_string(&#arg_param_name)
+                .map_err(|e| {
+                    tcp_connection::error::TcpTargetError::Serialization(e.to_string())
+                })?;
+            let result_json = pool.process_json(
+                Box::leak(string_proc::snake_case!(stringify!(#action_name_ident)).into_boxed_str()),
+                ctx,
+                args_json,
+            ).await?;
+            serde_json::from_str(&result_json)
+                .map_err(|e| {
+                    tcp_connection::error::TcpTargetError::Serialization(e.to_string())
+                })
         }
 
         #[allow(dead_code)]
@@ -79,20 +88,20 @@ fn generate_action_struct(input_fn: ItemFn, _is_local: bool) -> proc_macro2::Tok
         #[doc = "Use the generated struct instead."]
         #[doc = ""]
         #[doc = "Register the action to the pool."]
-        #[doc = "```rust"]
-        #[doc = "YourActionPascalName::register_to_pool(&mut pool);"]
+        #[doc = "```ignore"]
+        #[doc = "register_your_func(&mut pool);"]
         #[doc = "```"]
         #[doc = ""]
         #[doc = "Process the action at the pool."]
-        #[doc = "```rust"]
-        #[doc = "let result = YourActionPascalName::process_at_pool(&pool, ctx, arg).await?;"]
+        #[doc = "```ignore"]
+        #[doc = "let result = proc_your_func(&pool, ctx, arg).await?;"]
         #[doc = "```"]
         #fn_vis #fn_sig #fn_block
     }
 }
 
 fn validate_function_signature(fn_sig: &syn::Signature) {
-    if !fn_sig.asyncness.is_some() {
+    if fn_sig.asyncness.is_none() {
         panic!("Expected async function for Action, but found synchronous function");
     }
 
@@ -111,13 +120,12 @@ fn validate_function_signature(fn_sig: &syn::Signature) {
     };
 
     if let syn::Type::Path(type_path) = return_type.as_ref() {
-        if let Some(segment) = type_path.path.segments.last() {
-            if segment.ident != "Result" {
+        if let Some(segment) = type_path.path.segments.last()
+            && segment.ident != "Result" {
                 panic!(
                     "Expected Action function to return Result<T, TcpTargetError>, but found different return type"
                 );
             }
-        }
     } else {
         panic!(
             "Expected Action function to return Result<T, TcpTargetError>, but found no return type"
diff --git a/crates/system_action/src/action.rs b/crates/system_action/src/action.rs
index 562a142..8a6180a 100644
--- a/crates/system_action/src/action.rs
+++ b/crates/system_action/src/action.rs
@@ -1,6 +1,15 @@
+use serde::{Serialize, de::DeserializeOwned};
+use std::any::{Any, TypeId};
+use std::collections::HashMap;
+use std::sync::Arc;
 use tcp_connection::{error::TcpTargetError, instance::ConnectionInstance};
+use tokio::{net::TcpStream, sync::Mutex};
 
-pub trait Action<Args, Return> {
+pub trait Action<Args, Return>
+where
+    Args: Serialize + DeserializeOwned + Send,
+    Return: Serialize + DeserializeOwned + Send,
+{
     fn action_name() -> &'static str;
 
     fn is_remote_action() -> bool;
@@ -13,27 +22,54 @@ pub trait Action<Args, Return> {
 
 #[derive(Default)]
 pub struct ActionContext {
-    // Whether the action is executed locally or remotely
+    /// Whether the action is executed locally or remotely
     local: bool,
 
+    /// The name of the action being executed
+    action_name: String,
+
+    /// The JSON-serialized arguments for the action
+    action_args_json: String,
+
     /// The connection instance in the current context,
-    /// used to interact with the machine on the other end
-    instance: Option<ConnectionInstance>,
+    instance: Option<Arc<Mutex<ConnectionInstance>>>,
+
+    /// Generic data storage for arbitrary types
+    data: HashMap<TypeId, Arc<dyn Any + Send + Sync>>,
 }
 
 impl ActionContext {
     /// Generate local context
     pub fn local() -> Self {
-        let mut ctx = ActionContext::default();
-        ctx.local = true;
-        ctx
+        ActionContext {
+            local: true,
+            ..Default::default()
+        }
     }
 
     /// Generate remote context
     pub fn remote() -> Self {
-        let mut ctx = ActionContext::default();
-        ctx.local = false;
-        ctx
+        ActionContext {
+            local: false,
+            ..Default::default()
+        }
+    }
+
+    /// Build connection instance from TcpStream
+    pub fn build_instance(mut self, stream: TcpStream) -> Self {
+        self.instance = Some(Arc::new(Mutex::new(ConnectionInstance::from(stream))));
+        self
+    }
+
+    /// Insert connection instance into context
+    pub fn insert_instance(mut self, instance: ConnectionInstance) -> Self {
+        self.instance = Some(Arc::new(Mutex::new(instance)));
+        self
+    }
+
+    /// Pop connection instance from context
+    pub fn pop_instance(&mut self) -> Option<Arc<Mutex<ConnectionInstance>>> {
+        self.instance.take()
     }
 }
 
@@ -49,7 +85,81 @@ impl ActionContext {
     }
 
     /// Get the connection instance in the current context
-    pub fn instance(&self) -> &Option<ConnectionInstance> {
+    pub fn instance(&self) -> &Option<Arc<Mutex<ConnectionInstance>>> {
         &self.instance
     }
+
+    /// Get a mutable reference to the connection instance in the current context
+    pub fn instance_mut(&mut self) -> &mut Option<Arc<Mutex<ConnectionInstance>>> {
+        &mut self.instance
+    }
+
+    /// Get the action name from the context
+    pub fn action_name(&self) -> &str {
+        &self.action_name
+    }
+
+    /// Get the action arguments from the context
+    pub fn action_args_json(&self) -> &String {
+        &self.action_args_json
+    }
+
+    /// Set the action name in the context
+    pub fn set_action_name(mut self, action_name: String) -> Self {
+        self.action_name = action_name;
+        self
+    }
+
+    /// Set the action arguments in the context
+    pub fn set_action_args(mut self, action_args: String) -> Self {
+        self.action_args_json = action_args;
+        self
+    }
+
+    /// Insert arbitrary data in the context
+    pub fn insert<T: Any + Send + Sync>(mut self, value: T) -> Self {
+        self.data.insert(TypeId::of::<T>(), Arc::new(value));
+        self
+    }
+
+    /// Insert arbitrary data as Arc in the context
+    pub fn insert_arc<T: Any + Send + Sync>(mut self, value: Arc<T>) -> Self {
+        self.data.insert(TypeId::of::<T>(), value);
+        self
+    }
+
+    /// Get arbitrary data from the context
+    pub fn get<T: Any + Send + Sync>(&self) -> Option<&T> {
+        self.data
+            .get(&TypeId::of::<T>())
+            .and_then(|arc| arc.downcast_ref::<T>())
+    }
+
+    /// Get arbitrary data as Arc from the context
+    pub fn get_arc<T: Any + Send + Sync>(&self) -> Option<Arc<T>> {
+        self.data
+            .get(&TypeId::of::<T>())
+            .and_then(|arc| Arc::clone(arc).downcast::<T>().ok())
+    }
+
+    /// Remove and return arbitrary data from the context
+    pub fn remove<T: Any + Send + Sync>(&mut self) -> Option<Arc<T>> {
+        self.data
+            .remove(&TypeId::of::<T>())
+            .and_then(|arc| arc.downcast::<T>().ok())
+    }
+
+    /// Check if the context contains data of a specific type
+    pub fn contains<T: Any + Send + Sync>(&self) -> bool {
+        self.data.contains_key(&TypeId::of::<T>())
+    }
+
+    /// Take ownership of the context and extract data of a specific type
+    pub fn take<T: Any + Send + Sync>(mut self) -> (Self, Option<Arc<T>>) {
+        let value = self
+            .data
+            .remove(&TypeId::of::<T>())
+            .and_then(|arc| arc.downcast::<T>().ok());
+        (self, value)
+    }
 }
diff --git a/crates/system_action/src/action_pool.rs b/crates/system_action/src/action_pool.rs
index 0a1a6c7..c28de1e 100644
--- a/crates/system_action/src/action_pool.rs
+++ b/crates/system_action/src/action_pool.rs
@@ -1,11 +1,36 @@
+use std::pin::Pin;
+
+use serde::{Serialize, de::DeserializeOwned};
+use serde_json;
 use tcp_connection::error::TcpTargetError;
 
 use crate::action::{Action, ActionContext};
 
+type ProcBeginCallback = for<'a> fn(
+    &'a ActionContext,
+    args: &'a (dyn std::any::Any + Send + Sync),
+) -> ProcBeginFuture<'a>;
+type ProcEndCallback = fn() -> ProcEndFuture;
+
+type ProcBeginFuture<'a> = Pin<Box<dyn Future<Output = Result<(), TcpTargetError>> + Send + 'a>>;
+type ProcEndFuture = Pin<Box<dyn Future<Output = Result<(), TcpTargetError>> + Send>>;
+
 /// A pool of registered actions that can be processed by name
 pub struct ActionPool {
     /// HashMap storing action name to action implementation mapping
     actions: std::collections::HashMap<&'static str, Box<dyn ActionErased>>,
+
+    /// Callback to execute when process begins
+    on_proc_begin: Option<ProcBeginCallback>,
+
+    /// Callback to execute when process ends
+    on_proc_end: Option<ProcEndCallback>,
+}
+
+impl Default for ActionPool {
+    fn default() -> Self {
+        Self::new()
+    }
 }
 
 impl ActionPool {
@@ -13,20 +38,32 @@ impl ActionPool {
     pub fn new() -> Self {
         Self {
             actions: std::collections::HashMap::new(),
+            on_proc_begin: None,
+            on_proc_end: None,
         }
     }
 
+    /// Sets a callback to be executed when process begins
+    pub fn set_on_proc_begin(&mut self, callback: ProcBeginCallback) {
+        self.on_proc_begin = Some(callback);
+    }
+
+    /// Sets a callback to be executed when process ends
+    pub fn set_on_proc_end(&mut self, callback: ProcEndCallback) {
+        self.on_proc_end = Some(callback);
+    }
+
     /// Registers an action type with the pool
     ///
     /// Usage:
-    /// ```
+    /// ```ignore
     /// action_pool.register::<MyAction, MyArgs, MyReturn>();
     /// ```
     pub fn register<A, Args, Return>(&mut self)
     where
         A: Action<Args, Return> + Send + Sync + 'static,
-        Args: serde::de::DeserializeOwned + Send + Sync + 'static,
-        Return: serde::Serialize + Send + Sync + 'static,
+        Args: serde::Serialize + serde::de::DeserializeOwned + Send + Sync + 'static,
+        Return: serde::Serialize + serde::de::DeserializeOwned + Send + Sync + 'static,
     {
         let action_name = A::action_name();
         self.actions.insert(
@@ -38,7 +75,40 @@ impl ActionPool {
     /// Processes an action by name with given context and arguments
     ///
     /// Usage:
+    /// ```ignore
+    /// let result = action_pool.process::<MyArgs, MyReturn>("my_action", context, args).await?;
+    /// ```
+    /// Processes an action by name with JSON-serialized arguments
+    ///
+    /// Usage:
+    /// ```ignore
+    /// let result_json = action_pool.process_json("my_action", context, args_json).await?;
+    /// let result: MyReturn = serde_json::from_str(&result_json)?;
     /// ```
+    pub async fn process_json<'a>(
+        &'a self,
+        action_name: &'a str,
+        context: ActionContext,
+        args_json: String,
+    ) -> Result<String, TcpTargetError> {
+        if let Some(action) = self.actions.get(action_name) {
+            // Set action name and args in context for callbacks
+            let context = context.set_action_name(action_name.to_string());
+            let context = context.set_action_args(args_json.clone());
+
+            self.exec_on_proc_begin(&context, &args_json).await?;
+            let result = action.process_json_erased(context, args_json).await?;
+            self.exec_on_proc_end().await?;
+            Ok(result)
+        } else {
+            Err(TcpTargetError::Unsupported("InvalidAction".to_string()))
+        }
+    }
+
+    /// Processes an action by name with given context and arguments
+    ///
+    /// Usage:
+    /// ```ignore
     /// let result = action_pool.process::<MyArgs, MyReturn>("my_action", context, args).await?;
     /// ```
     pub async fn process<'a, Args, Return>(
@@ -48,34 +118,69 @@ impl ActionPool {
         args: Args,
     ) -> Result<Return, TcpTargetError>
     where
-        Args: serde::de::DeserializeOwned + Send + 'static,
+        Args: serde::de::DeserializeOwned + Send + Sync + 'static,
         Return: serde::Serialize + Send + 'static,
     {
         if let Some(action) = self.actions.get(action_name) {
+            self.exec_on_proc_begin(&context, &args).await?;
             let result = action.process_erased(context, Box::new(args)).await?;
             let result = *result
                 .downcast::<Return>()
                 .map_err(|_| TcpTargetError::Unsupported("InvalidArguments".to_string()))?;
+            self.exec_on_proc_end().await?;
             Ok(result)
         } else {
             Err(TcpTargetError::Unsupported("InvalidAction".to_string()))
         }
     }
+
+    /// Executes the process begin callback if set
+    async fn exec_on_proc_begin(
+        &self,
+        context: &ActionContext,
+        args: &(dyn std::any::Any + Send + Sync),
+    ) -> Result<(), TcpTargetError> {
+        if let Some(callback) = &self.on_proc_begin {
+            callback(context, args).await
+        } else {
+            Ok(())
+        }
+    }
+
+    /// Executes the process end callback if set
+    async fn exec_on_proc_end(&self) -> Result<(), TcpTargetError> {
+        if let Some(callback) = &self.on_proc_end {
+            callback().await
+        } else {
+            Ok(())
+        }
+    }
 }
 
 /// Trait for type-erased actions that can be stored in ActionPool
+type ProcessErasedFuture = std::pin::Pin<
+    Box<
+        dyn std::future::Future<Output = Result<Box<dyn std::any::Any + Send>, TcpTargetError>>
+            + Send,
+    >,
+>;
+type ProcessJsonErasedFuture =
+    std::pin::Pin<Box<dyn std::future::Future<Output = Result<String, TcpTargetError>> + Send>>;
+
 trait ActionErased: Send + Sync {
     /// Processes the action with type-erased arguments and returns type-erased result
     fn process_erased(
         &self,
         context: ActionContext,
         args: Box<dyn std::any::Any + Send>,
-    ) -> std::pin::Pin<
-        Box<
-            dyn std::future::Future<Output = Result<Box<dyn std::any::Any + Send>, TcpTargetError>>
-                + Send,
-        >,
-    >;
+    ) -> ProcessErasedFuture;
+
+    /// Processes the action with JSON-serialized arguments and returns JSON-serialized result
+    fn process_json_erased(
+        &self,
+        context: ActionContext,
+        args_json: String,
+    ) -> ProcessJsonErasedFuture;
 }
 
 /// Wrapper struct that implements ActionErased for concrete Action types
@@ -84,8 +189,8 @@ struct ActionWrapper<A, Args, Return>(std::marker::PhantomData<(A, Args, Return)
 impl<A, Args, Return> ActionErased for ActionWrapper<A, Args, Return>
 where
     A: Action<Args, Return> + Send + Sync,
-    Args: serde::de::DeserializeOwned + Send + Sync + 'static,
-    Return: serde::Serialize + Send + Sync + 'static,
+    Args: Serialize + DeserializeOwned + Send + Sync + 'static,
+    Return: Serialize + DeserializeOwned + Send + Sync + 'static,
 {
     fn process_erased(
         &self,
@@ -105,4 +210,20 @@ where
             Ok(Box::new(result) as Box<dyn std::any::Any + Send>)
         })
     }
+
+    fn process_json_erased(
+        &self,
+        context: ActionContext,
+        args_json: String,
+    ) -> std::pin::Pin<Box<dyn std::future::Future<Output = Result<String, TcpTargetError>> + Send>>
+    {
+        Box::pin(async move {
+            let args: Args = serde_json::from_str(&args_json)
+                .map_err(|e| TcpTargetError::Serialization(format!("Deserialize failed: {}", e)))?;
+            let result = A::process(context, args).await?;
+            let result_json = serde_json::to_string(&result)
+                .map_err(|e| TcpTargetError::Serialization(format!("Serialize failed: {}", e)))?;
+            Ok(result_json)
+        })
+    }
 }