feat: Add logging

Signed-off-by: quexeky <git@quexeky.dev>

Cargo.toml

@@ -26,6 +26,7 @@ bincode_2 = { package = "bincode", version = "2.0", features = ["serde"], option
 postcard_1_0 = { package = "postcard", version = "1.0.8", features = ["alloc"], optional = true }
 rmp_serde_1_3 = { package = "rmp-serde", version = "1.3", optional = true }
 doc-comment = "0.3.3"
+log = "0.4.27"
 
 [dev-dependencies]
 serde_json = "1.0.116"

native_model_macro/Cargo.toml

@@ -17,3 +17,4 @@ proc-macro = true
 syn = { version = "2.0.60", features = ["full"] }
 quote = "1.0.36"
 proc-macro2 = "1.0.81"
+log = "0.4.27"

native_model_macro/src/lib.rs

@@ -4,7 +4,7 @@ mod method;
 
 use crate::method::{
     generate_native_model_decode_body, generate_native_model_decode_upgrade_body,
-    generate_native_model_encode_body, generate_native_model_encode_downgrade_body,
+    generate_native_model_encode_body,
     generate_native_model_id, generate_native_model_version,
 };
 use proc_macro::TokenStream;
@@ -107,7 +107,8 @@ pub fn native_model(args: TokenStream, input: TokenStream) -> TokenStream {
     let native_model_version_fn = generate_native_model_version(&attrs);
     let native_model_encode_body_fn = generate_native_model_encode_body(&attrs);
     let native_model_decode_body_fn = generate_native_model_decode_body(&attrs);
-    let native_model_decode_upgrade_body_fn = generate_native_model_decode_upgrade_body(&attrs);
+    let native_model_decode_upgrade_body_fn = generate_native_model_decode_upgrade_body(&attrs, struct_name);
+
 
     let gen = quote! {
         #ast

native_model_macro/src/method/decode_upgrade_body.rs

@@ -1,17 +1,21 @@
 use crate::ModelAttributes;
 use proc_macro2::TokenStream;
 use quote::quote;
+use syn::Ident;
 
-pub(crate) fn generate_native_model_decode_upgrade_body(attrs: &ModelAttributes) -> TokenStream {
+pub(crate) fn generate_native_model_decode_upgrade_body(attrs: &ModelAttributes, struct_name: &Ident) -> TokenStream {
     let native_model_from = attrs.from.clone();
     let native_model_try_from = attrs.try_from.clone();
 
     let model_from_or_try_from = if let Some(from) = native_model_from {
         quote! {
+            log::info!("Upgrading database {} from version {} to version {}", #struct_name, #from::native_model_version(), Self::native_model_version());
+
             #from::native_model_decode_upgrade_body(data, id, version).map(|a| a.into())
         }
     } else if let Some((try_from, error_try_from)) = native_model_try_from {
         quote! {
+            log::info!("Attempting to upgrade database {} from version {} to version {}", #struct_name, #try_from::native_model_version(), Self::native_model_version());
             let result = #try_from::native_model_decode_upgrade_body(data, id, version).map(|b| {
                 b.try_into()
                     .map_err(|e: #error_try_from| native_model::UpgradeError {
@@ -29,7 +33,7 @@ pub(crate) fn generate_native_model_decode_upgrade_body(attrs: &ModelAttributes)
             })
         }
     };
-
+    
     let gen = quote! {
         fn native_model_decode_upgrade_body(data: Vec<u8>, id: u32, version: u32) -> native_model::Result<Self> {
             if version == Self::native_model_version() {

native_model_macro/src/method/encode_downgrade_body.rs

@@ -1,54 +0,0 @@
-use crate::ModelAttributes;
-use proc_macro2::TokenStream;
-use quote::quote;
-
-pub(crate) fn generate_native_model_encode_downgrade_body(attrs: &ModelAttributes) -> TokenStream {
-    let native_model_from = attrs.from.clone();
-    let native_model_try_from = attrs.try_from.clone();
-
-    let model_from_or_try_from = if let Some(from) = native_model_from {
-        quote! {
-            #from::native_model_encode_downgrade_body(self.into(), version)
-        }
-    } else if let Some((try_from, error_try_from)) = native_model_try_from {
-        quote! {
-            let result = #try_from::native_model_encode_downgrade_body(
-                self.try_into()
-                    .map_err(|e: #error_try_from| native_model::DowngradeError {
-                        msg: format!("{}", e),
-                        source: e.into(),
-                    })?,
-                version,
-            )?;
-            Ok(result)
-        }
-    } else {
-        quote! {
-            Err(native_model::Error::DowngradeNotSupported {
-                from: version,
-                to: Self::native_model_version(),
-            })
-        }
-    };
-
-    let gen = quote! {
-        fn native_model_encode_downgrade_body(self, version: u32) -> native_model::Result<Vec<u8>> {
-            if version == Self::native_model_version() {
-                let result = self.native_model_encode_body()?;
-                Ok(result)
-            } else if version < Self::native_model_version() {
-                #model_from_or_try_from
-            } else {
-                Err(native_model::Error::DowngradeNotSupported {
-                    from: version,
-                    to: Self::native_model_version(),
-                })
-            }
-        }
-    };
-
-    gen
-}
-
-// #[error("Wrong type id expected: {}, actual: {}", expected, actual)]
-// WrongTypeId { expected: u32, actual: u32 },

native_model_macro/src/method/mod.rs

@@ -1,13 +1,11 @@
 mod decode_body;
 mod decode_upgrade_body;
 mod encode_body;
-mod encode_downgrade_body;
 mod id;
 mod version;
 
 pub(crate) use decode_body::*;
 pub(crate) use decode_upgrade_body::*;
 pub(crate) use encode_body::*;
-pub(crate) use encode_downgrade_body::*;
 pub(crate) use id::*;
 pub(crate) use version::*;