New error type

CHANGELOG.md

@@ -101,6 +101,8 @@ and this project adheres to
 - cosmwasm-std: Split up `Validator` type into `Validator` and
   `ValidatorMetadata` to allow adding more fields to `ValidatorResponse` in the
   future. ([#2501])
+- cosmwasm-std: Redesigned `StdError` to be more flexible and less immutable
+  ([#2500])
 
 ## Fixed
 
@@ -149,6 +151,7 @@ and this project adheres to
 [#2480]: https://github.com/CosmWasm/cosmwasm/pull/2480
 [#2484]: https://github.com/CosmWasm/cosmwasm/pull/2484
 [#2495]: https://github.com/CosmWasm/cosmwasm/pull/2495
+[#2500]: https://github.com/CosmWasm/cosmwasm/pull/2500
 [#2501]: https://github.com/CosmWasm/cosmwasm/pull/2501
 
 ## [2.2.0] - 2024-12-17

contracts/burner/src/contract.rs

@@ -13,7 +13,7 @@ pub fn instantiate(
     _info: MessageInfo,
     _msg: InstantiateMsg,
 ) -> StdResult<Response> {
-    Err(StdError::generic_err(
+    Err(StdError::msg(
         "You can only use this contract for migrations",
     ))
 }
@@ -23,7 +23,7 @@ pub fn migrate(deps: DepsMut, env: Env, msg: MigrateMsg) -> StdResult<Response>
     let denom_len = msg.denoms.len();
     let denoms = BTreeSet::<String>::from_iter(msg.denoms); // Ensure uniqueness
     if denoms.len() != denom_len {
-        return Err(StdError::generic_err("Denoms not unique"));
+        return Err(StdError::msg("Denoms not unique"));
     }
 
     // get balance and send to recipient
@@ -98,7 +98,7 @@ mod tests {
     use cosmwasm_std::testing::{
         message_info, mock_dependencies, mock_dependencies_with_balance, mock_env,
     };
-    use cosmwasm_std::{coin, coins, Attribute, StdError, Storage, SubMsg};
+    use cosmwasm_std::{coin, coins, Attribute, Storage, SubMsg};
 
     /// Gets the value of the first attribute with the given key
     fn first_attr(data: impl AsRef<[Attribute]>, search_key: &str) -> Option<String> {
@@ -121,12 +121,10 @@ mod tests {
         let info = message_info(&creator, &coins(1000, "earth"));
         // we can just call .unwrap() to assert this was a success
         let res = instantiate(deps.as_mut(), mock_env(), info, msg);
-        match res.unwrap_err() {
-            StdError::GenericErr { msg, .. } => {
-                assert_eq!(msg, "You can only use this contract for migrations")
-            }
-            _ => panic!("expected migrate error message"),
-        }
+        assert!(res
+            .unwrap_err()
+            .to_string()
+            .ends_with("You can only use this contract for migrations"));
     }
 
     #[test]
@@ -142,10 +140,7 @@ mod tests {
             delete: 0,
         };
         let err = migrate(deps.as_mut(), mock_env(), msg).unwrap_err();
-        match err {
-            StdError::GenericErr { msg, .. } => assert_eq!(msg, "Denoms not unique"),
-            err => panic!("Unexpected error: {err:?}"),
-        }
+        assert!(err.to_string().ends_with("Denoms not unique"));
 
         // One denom
         let msg = MigrateMsg {

contracts/burner/tests/integration.rs

@@ -35,7 +35,7 @@ fn instantiate_fails() {
     let msg = res.unwrap_err();
     assert_eq!(
         msg,
-        "Generic error: You can only use this contract for migrations"
+        "kind: Other, error: You can only use this contract for migrations"
     );
 }
 

contracts/crypto-verify/src/contract.rs

@@ -210,7 +210,7 @@ pub fn query_verify_ethereum_text(
     // Decompose signature
     let (v, rs) = match signature.split_last() {
         Some(pair) => pair,
-        None => return Err(StdError::generic_err("Signature must not be empty")),
+        None => return Err(StdError::msg("Signature must not be empty")),
     };
     let recovery = get_recovery_param(*v)?;
 
@@ -326,7 +326,7 @@ mod tests {
     use cosmwasm_std::testing::{
         message_info, mock_dependencies, mock_env, MockApi, MockQuerier, MockStorage,
     };
-    use cosmwasm_std::{from_json, OwnedDeps, RecoverPubkeyError, VerificationError};
+    use cosmwasm_std::{from_json, OwnedDeps, StdErrorKind};
     use hex_literal::hex;
 
     const CREATOR: &str = "creator";
@@ -426,11 +426,8 @@ mod tests {
         let res = query(deps.as_ref(), mock_env(), verify_msg);
         assert!(res.is_err());
         assert!(matches!(
-            res.unwrap_err(),
-            StdError::VerificationErr {
-                source: VerificationError::InvalidPubkeyFormat,
-                ..
-            }
+            res.unwrap_err().kind(),
+            StdErrorKind::Cryptography,
         ))
     }
 
@@ -500,11 +497,8 @@ mod tests {
             signer_address: signer_address.into(),
         };
         let result = query(deps.as_ref(), mock_env(), verify_msg);
-        match result.unwrap_err() {
-            StdError::RecoverPubkeyErr {
-                source: RecoverPubkeyError::UnknownErr { .. },
-                ..
-            } => {}
+        match result.unwrap_err().kind() {
+            StdErrorKind::Cryptography => {}
             err => panic!("Unexpected error: {err:?}"),
         }
     }
@@ -715,11 +709,8 @@ mod tests {
         let res = query(deps.as_ref(), mock_env(), verify_msg);
         assert!(res.is_err());
         assert!(matches!(
-            res.unwrap_err(),
-            StdError::VerificationErr {
-                source: VerificationError::InvalidPubkeyFormat,
-                ..
-            }
+            res.unwrap_err().kind(),
+            StdErrorKind::Cryptography
         ))
     }
 
@@ -781,11 +772,8 @@ mod tests {
         let res = query(deps.as_ref(), mock_env(), verify_msg);
         assert!(res.is_err());
         assert!(matches!(
-            res.unwrap_err(),
-            StdError::VerificationErr {
-                source: VerificationError::InvalidPubkeyFormat,
-                ..
-            }
+            res.unwrap_err().kind(),
+            StdErrorKind::Cryptography,
         ))
     }
 

contracts/crypto-verify/src/ethereum.rs

@@ -72,7 +72,7 @@ pub fn get_recovery_param(v: u8) -> StdResult<u8> {
     match v {
         27 => Ok(0),
         28 => Ok(1),
-        _ => Err(StdError::generic_err("Values of v other than 27 and 28 not supported. Replay protection (EIP-155) cannot be used here."))
+        _ => Err(StdError::msg("Values of v other than 27 and 28 not supported. Replay protection (EIP-155) cannot be used here."))
     }
 }
 
@@ -87,7 +87,7 @@ pub fn get_recovery_param_with_chain_id(v: u64, chain_id: u64) -> StdResult<u8>
     let recovery = v - chain_id * 2 - 35;
     match recovery {
         0 | 1 => Ok(recovery as u8),
-        _ => Err(StdError::generic_err(format!(
+        _ => Err(StdError::msg(format_args!(
             "Calculated recovery parameter must be 0 or 1 but is {recovery}."
         ))),
     }
@@ -97,13 +97,13 @@ pub fn get_recovery_param_with_chain_id(v: u64, chain_id: u64) -> StdResult<u8>
 pub fn ethereum_address_raw(pubkey: &[u8]) -> StdResult<[u8; 20]> {
     let (tag, data) = match pubkey.split_first() {
         Some(pair) => pair,
-        None => return Err(StdError::generic_err("Public key must not be empty")),
+        None => return Err(StdError::msg("Public key must not be empty")),
     };
     if *tag != 0x04 {
-        return Err(StdError::generic_err("Public key must start with 0x04"));
+        return Err(StdError::msg("Public key must start with 0x04"));
     }
     if data.len() != 64 {
-        return Err(StdError::generic_err("Public key must be 65 bytes long"));
+        return Err(StdError::msg("Public key must be 65 bytes long"));
     }
 
     let hash = Keccak256::digest(data);
@@ -112,14 +112,12 @@ pub fn ethereum_address_raw(pubkey: &[u8]) -> StdResult<[u8; 20]> {
 
 pub fn decode_address(input: &str) -> StdResult<[u8; 20]> {
     if input.len() != 42 {
-        return Err(StdError::generic_err(
-            "Ethereum address must be 42 characters long",
-        ));
+        return Err(StdError::msg("Ethereum address must be 42 characters long"));
     }
     if !input.starts_with("0x") {
-        return Err(StdError::generic_err("Ethereum address must start with 0x"));
+        return Err(StdError::msg("Ethereum address must start with 0x"));
     }
-    let data = hex::decode(&input[2..]).map_err(|_| StdError::generic_err("hex decoding error"))?;
+    let data = hex::decode(&input[2..])?;
     Ok(data.try_into().unwrap())
 }
 

contracts/crypto-verify/tests/integration.rs

@@ -221,7 +221,7 @@ fn cosmos_signature_verify_errors() {
     let res = query(&mut deps, mock_env(), verify_msg);
     assert_eq!(
         res.unwrap_err(),
-        "Verification error: Invalid public key format"
+        "kind: Cryptography, error: Invalid public key format"
     )
 }
 
@@ -283,7 +283,7 @@ fn secp256r1_signature_verify_errors() {
     let res = query(&mut deps, mock_env(), verify_msg);
     assert_eq!(
         res.unwrap_err(),
-        "Verification error: Invalid public key format"
+        "kind: Cryptography, error: Invalid public key format"
     )
 }
 
@@ -354,7 +354,7 @@ fn ethereum_signature_verify_fails_for_corrupted_signature() {
     };
     let result = query(&mut deps, mock_env(), verify_msg);
     let msg = result.unwrap_err();
-    assert_eq!(msg, "Recover pubkey error: Unknown error: 10");
+    assert_eq!(msg, "kind: Cryptography, error: Unknown error: 10");
 }
 
 #[test]
@@ -466,7 +466,7 @@ fn tendermint_signature_verify_errors() {
     let res = query(&mut deps, mock_env(), verify_msg);
     assert_eq!(
         res.unwrap_err(),
-        "Verification error: Invalid public key format"
+        "kind: Cryptography, error: Invalid public key format"
     )
 }
 
@@ -625,7 +625,7 @@ fn tendermint_signatures_batch_verify_errors() {
     let res = query(&mut deps, mock_env(), verify_msg);
     assert_eq!(
         res.unwrap_err(),
-        "Verification error: Invalid public key format"
+        "kind: Cryptography, error: Invalid public key format"
     )
 }
 

contracts/cyberpunk/src/contract.rs

@@ -56,8 +56,7 @@ fn execute_argon2(mem_cost: u32, time_cost: u32) -> Result<Response, ContractErr
         ad: &[],
         hash_length: 32,
     };
-    let hash = argon2::hash_encoded(password, salt, &config)
-        .map_err(|e| StdError::generic_err(format!("hash_encoded errored: {e}")))?;
+    let hash = argon2::hash_encoded(password, salt, &config).map_err(StdError::from)?;
     // let matches = argon2::verify_encoded(&hash, password).unwrap();
     // assert!(matches);
     Ok(Response::new().set_data(hash.into_bytes()))
@@ -106,13 +105,13 @@ fn execute_allocate_large_memory(pages: u32) -> Result<Response, ContractError>
         use core::arch::wasm32;
         let old_size = wasm32::memory_grow(0, pages as usize);
         if old_size == usize::max_value() {
-            return Err(StdError::generic_err("memory.grow failed").into());
+            return Err(StdError::msg("memory.grow failed").into());
         }
         Ok(Response::new().set_data((old_size as u32).to_be_bytes()))
     }
 
     #[cfg(not(target_arch = "wasm32"))]
-    Err(StdError::generic_err("Unsupported architecture").into())
+    Err(StdError::msg("Unsupported architecture").into())
 }
 
 fn execute_panic() -> Result<Response, ContractError> {
@@ -139,7 +138,7 @@ fn execute_unreachable() -> Result<Response, ContractError> {
     core::arch::wasm32::unreachable();
 
     #[cfg(not(target_arch = "wasm32"))]
-    Err(StdError::generic_err("Unsupported architecture").into())
+    Err(StdError::msg("Unsupported architecture").into())
 }
 
 fn execute_mirror_env(env: Env) -> Result<Response, ContractError> {

contracts/cyberpunk/src/errors.rs

@@ -1,7 +1,7 @@
 use cosmwasm_std::StdError;
 use thiserror::Error;
 
-#[derive(Error, Debug, PartialEq)]
+#[derive(Error, Debug)]
 pub enum ContractError {
     #[error("{0}")]
     /// this is needed so we can use `bucket.load(...)?` and have it auto-converted to the custom error