CHANGELOG.md

Changelog

Changelog for odra.

[2.5.0] - 2026-01-23

Changed

• Refactor of CEP-95 token implementation.

Added

• set_name, set_symbol and set_decimals functions to CEP-18 module.
• Support for events from RPC to detect transaction success/failure.

[2.4.0] - 2025-09-02

Changed

• Refactor of CEP-95 token implementation.

[2.3.1] - 2025-08-11

Added

• ODRA_CASPER_LIVENET_TTL environment variable to set the TTL for the Casper livenet.

Changed

• Transaction TTL changed from 1m to 5m.

[2.3.0] - 2025-08-11

Added

• Support for deploying upgradable contracts and possibility to upgrade them.
• Rich stacktrace for OdraVM.

[2.2.0] - 2025-08-06

Added

• DeployerExt::load_or_deploy_with_cfg in odra-cli to make contracts deployment smoother.
• Support for minimum bid amount in OdraVM to reflect the default CasperVM behaviour.
• Contract can query ValidatorInfo for its minimum bid amount.
• Support for deploying upgradable contracts and possibility to upgrade them.

Fixed

• Fixed mismatch between rewards in OdraVM and CasperVM.
• Improved support for decoding a wider range of types in odra-cli.
• Smarter CasperClient::wait_for_transaction, that handles empty execution results.

Changed

• OdraConfig trait is now replaced by InstallConfig struct.

[2.1.0] - 2025-07-08

Added

• init_dictionary function in ContractEnv.
• init functions to all named keys related modules.
• Enforce all named keys in CEP-18 and CEP-95 to be initialized in the init function.
• New commands in odra-cli:
  • whoami - prints the address of the current account.
  • print-events - prints all events emitted by the contract.
• A base cli implementation in templates.

Changed

• Signature of functions in HostEnv, to accept &Addressable instead of Address.
• Signature of emitted_* functions in HostEnv, to accept T: ToBytes + EventInstance instead of a &T reference.
• odra-cli requires the gas parameter to call a mutable entrypoint.
• __attached_value is now attached_value in odra-cli.
• HostEnv::address() -> &Address now is HostEnv::contract_address(&self) -> Address.
• Addressable::address() returns Address instead of &Address.

[2.0.1] - 2025-06-06

Added

• CEP-95 token implementation in odra-modules.
• Psuedorandom number generator in ContractEnv.
• Examples of odra-cli usage in odra-examples.

Changed

• CEP-18 is now more relaxed in terms of required entrypoints.

[2.0.0] - 2025-05-27

Added

• Support for Casper 2.
• Native Casper events are now supported, alongside CES events:
  • new contract env functions: emit_native_event
  • new host env function emitted_native, emitted_native_event, native_events and native_event_names
• Support for delegating funds by the contracts:
  • new contract env functions: delegate, undelegate and delegated_amount
  • new host env functions: delegated_amount, get_validator, remove_validator, advance_with_auctions, auction_delay and unbonding_delay
• New contract env function pseudorandom_bytes which uses a randomness source from host.
• New host env functions block_time_millis and block_time_secs to avoid any confusion with EVM based code.
• odra-bdd - a new crate for testing Odra contracts using BDD style.
• odra-cli - a new crate for creating cli tools for Odra contracts.

Removed

• Support for Casper 1.

Changed

• bumped rust-toolchain to nightly-2024-07-31

[1.5.0] - 2025-01-07

Added

• More public methods in CEP18 module.

[1.4.0] - 2024-10-18

Added

• deploy_with_cfg to handle odra_cfg args in livenet.
• odra-cli is now in the repository.

Fixed

• Calling init fails in odra_vm.

[1.3.0] - 2024-08-20

Added

• OdraContract trait grouping module-related structures.

Changed

• Deployer is no longer implemented for HostRef but for OdraContract.
• chainspec.toml file has been updated to be compatible with the latest version of casper-execution-engine.

[1.2.0] - 2024-07-30

Added

• Extern type for simple external calls.

Changed

• Allow for reminting tokens in CEP78.
• Include custom types into schema.

[1.1.0] - 2024-06-17

Added

• Support for CSPR.cloud's auth token.
• new method for Address to create an address from a string.
• transfer function in the HostEnv allowing native token transfers between accounts.
• Reverse lookup feature for CEP78.
• Addressable trait for types that can be converted to Address.

Updated

• Fix get_block_time in casper-rpc-client.
• Calling try_ functions in the livenet context now returns a Result instead of panicking.
• Improve error messages in the livenet context.
• Update HostEnv functions accept Addressable instead of Address.

[1.0.0] - 2024-05-23

Added

• Add try_deploy function to the Deployer trait, which allows deploying a contract and returning an error if the deployment fails.
• Add Cep18 to odra-modules - a standard for fungible tokens.
• Add Cep78 to odra-modules - a standard for non-fungible tokens.
• Add cep18 and cep78 templates.

Changed

• Update casper crates to the latest versions.
• Fix minor bugs in generated code.
• Fix events collection in submodules.

[0.9.1] - 2024-04-15

Changed

• #[odra::odra_type] attribute can be applied to all flavors of enums (before applicable to unit-only enums).

[0.9.0] - 2024-04-02

Added

• Maybe<T> - a type that represents an entrypoint arg that may or may not be present.
• EntrypointArgument - a trait for types that can be used as entrypoint arguments.
• an example of using Maybe<T> in odra-examples crate.
• get_opt_named_arg_bytes(&str) in ContractEnv
• odra::contract_def::Argument has a new is_required field.
• odra-schema crate for generating contract schema that aligns with Casper Contract Schema.
• odra::event proc macro that combines Casper Event Standard and Casper Contract Schema boilerplate code.
• odra::module accepts error attribute to generate custom error in the schema.

Changed

• update modules and examples to reflect the changes.
• OdraType derive macro is now an attribute macro [odra::odra_type].
• OdraError derive macro is now an attribute macro [odra::odra_error].

Fixed

• #391 - compile error when using a type reference in the constructor signature.

[0.8.1] - 2024-03-01

Added

• ContractRef trait with new and address functions. All contract references now implement it.
• disable-allocator feature for odra crate. It allows to disable the allocator used by Odra Framework in wasm build.
• odra-build crate for including the code in contract's build.rs file.

Changed

• Traits implemented by modules are now also implemented by their ContractRefs and HostRefs.

[0.8.0] - 2024-02-06

Changed

• Replaced contract_env:: with self.env() in the contract context (of type ContractEnv). For example, instead of contract_env::caller() use self.env.caller().
• Replaced test_env with odra_test::env() in the test context (of type HostEnv).
• It is no longer possible to put a Mapping inside a Mapping. Use tuple keys instead, for example, instead of

allowances: Mapping<Address, Mapping<Address, U256>>

use

allowances: Mapping<(Address, Address), U256>

• Ref has been divided into two: HostRef and ContractRef depending on the context.
• Storage keys are constructed differently, keep that in mind when querying the storage outside the contract.
• token_balance(address: Address) in test context is now balance_of(address: &Address).
• Modules needs to be wrapped in SubModule<> when used in another module.
• HostRef (formerly Ref) methods parameters accept values even if endpoints expect references.
• unwrap_or_revert and unwrap_or_revert_with now require &HostEnv as a first parameter.
• Variable has been renamed to Var.
• Spent Gas is taken into account when checking an account balance. This means that all calls appear to cost 0 gas to the test accounts, but it is still possible to check the costs of the calls.
• Various changes of method signatures in odra-modules, e.g. &[U256] changed to Vec<U256> in on_erc1155_batch_received method.
• get_block_time() now returns u64 instead of wrapped type Blocktime(u64).
• The name property in Odra.toml is not required anymore.
• odra-casper-backend crate is now odra-casper-wasm-env
• odra-mock-vm crate is now odra-vm
• odra-proc-macros is the only code generation point.

Removed

• Removed #[odra::init] macro - now only one method can be a constructor, and it has to be named init.
• Removed emit() method from events. Use self.env.emit_event(event) instead.
• Removed assert_events! macro. Use env.emitted_event and similar methods instead.
• Removed native_token_metadata() and its respective structs.
• Removed assert_exception! macro. Use try_ prefix for endpoints instead. It returns a Result which can be used with a regular assert_eq! macro.`
• Removed odra(using) macro.
• Removed default() method from Deployer. Use init() instead.
• Removed StaticInstance and DynamicInstance traits. Use Module instead.
• Removed Node trait.
• Removed odra-types, odra-ir, odra-codegen, odra-casper-backend, odra-casper-shared, odra-utils crates.
• Removed OdraEvent trait, odra reexports casper_event_standard crate instead.

Added

• last_call() in test env with ContractCallResult struct which holds all information about the last call.
• odra::prelude::* module which reexports all basic types and traits. It is recommended to use it in the module code.
• odra-test crate providing HostEnv for testing purposes.
• odra-core crate providing framework core functionalities.
• odra-casper-rcp-client crate providing CasperClient for interacting with Casper node.
• odra-casper-livenet-env crate providing a host environment fo for the Casper livenet.
• HostRef trait - a host side reference to a contract.
• HostRefLoader trait for loading a contract from the host environment.
• EntryPointsCallerProvider trait.
• Deployer trait - a struct implementing that trait can deploy a contract.
• InitArgs trait - a struct implementing that trait can be used as a constructor argument.
• NoArgs struct, an implementation of InitArgs for empty/none (no constructor) arguments.

Very Brief Upgrade Path

• Copy bin folder and build.rs files from a freshly generated project using cargo-odra at version at least0.1.0.
• Update Cargo.toml by removing features and adding [[bin]] sections (See Cargo.toml from generated project).
• Update the code to reflect changes in the framework.

[0.7.0] - 2023-11-07

Changed

• no_std is now the default mode for WASM.
• odra-types are the only types crate.

Removed

• Removed odra-casper-types and odra-mock-vm-types.
• Removed OdraType in favor of ToBytes and FromBytes traits.

[0.6.0] - 2023-09-20

Added

• std feature for odra crate.
• odra::prelude reexports basic types and traits based on std feature.

Changed

• Replace WeeAlloc with ink!'s BumpAllocator.

[0.5.0] - 2023-07-19

Added

• Signature verification in contract_envs.
• Signature creation in test_envs.
• StaticInstance and DynamicInstance traits.
• Node trait to build static keys at the compilation time.
• List now can contain modules.

Removed

• Crypto module from odra-modules.
• Instance trait.
• derive PartialEq, Eq, Debug from storage building block (Var, Mapping, List).

Changed

• utilize KeyMaker to create storage keys in casper and casper-livenet.
• Only payable entrypoints checks incoming Casper purse and it is optional.
• Casper contract's cargo_purse is now created just once and reused.

[0.4.0] - 2023-06-26

Added

• odra-casper-livenet has new resource: proxy_caller.wasm.
• odra-casper-shared, odra-casper-types and odra-types are now no_std.
• Modules can have arguments that are references.
• odra-casper-test-env has new gas_report() function, that shows gas usages.

Fixed

• Casper gas counting.

Changed

• test-env/getter-proxy is now proxy-caller.
• proxy_getter.wasm is now proxy_caller_with_result.wasm.
• Casper's call methods for wasm build has a new set of arguments including upgradable contracts.
• Support for the Casper 1.5.1 version.

Removed

• casper-node is no longer a dependency for odra-casper-livenet.
• Composer

[0.3.1] - 2023-06-01

Added

• Composer - a tool for composing Odra modules' instances.
• Casper's chainspec.yaml added to the repository.
• Improvements to numeric conversions.
• Typed trait is implemented automatically for OdraType types.
• test_env exposes total_gas_used() function to allow better native token usage tracking.
• RUST_BACKTRACE=-1 will show the backtrace of the contract calls that panicked.
• Panicked contract calls will print the information about the call.

Fixed

• Better handling of call stack in MockVM.
• Better handling of native transfers in MockVM.
• Genesis in the MockVM generates more addresses with more tokens.
• Improved assert_exception! macro. It no longer needs new instance of Ref.

Changed

• transfer_tokens() now reverts if the transfer failed instead of returning false.
• advance_block_time_by() now uses milliseconds instead of seconds.

[0.3.0] - 2022-05-22

Added

• new module - Sequence - for storing single value in the storage that can be incremented.
• Casper contracts now generate schemas automatically. containing contract structure and Events schemas following the Casper Event Standard.
• Modules and Mappings now can be a part of a Mapping allowing to nest them.
• Namespaces can be generated manually for a finer control over nesting.
• #[odra::module(events = [Event1, Event2, ...])] attribute for modules to generate events.
• delegate! macro for delegating calls to other modules.
• #[odra(non_reeentrant)] attribute for modules to enable reentrancy guard.
• #[derive(OdraType)] for deriving OdraType trait for custom types.
• Unit-type Enums can now be OdraTypes.
• New Odra Modules:
  • Erc721,
  • Erc1155,
  • Ownable,
  • Ownable2Step,
  • AccessControl.
• Experimental odra-casper-livenet crate for deploying contracts to Casper Livenet.

Changed

• last_call_contract_cost() is now last_call_contract_gas_used().
• It is no longer possible to build zero address in casper.

Removed

• new method for Address.

[0.2.0] - 2022-11-23

Added

• Global CHANGELOG.md.
• odra
  • List collection.
  • Add tests for Var and Mapping.
  • Contract refs (*Ref struct) has with_tokens() function to attach tokens to the call.
• odra-mock-vm
  • Add AccountBalance to store the native token amount associated with the Address.
  • Add CallstackElement to stack contract execution along with the attached value.
• New crate odra-mock-vm-types - encapsulates mock-vm-specific types.
• New crate odra-casper-codegen - generates Casper contracts, moved from odra-casper-backend.
• New crate odra-casper-types - encapsulates Casper-specific types.
• odra-casper-test-env
  • Add dummy_contract_env module.
• New crate odra-examples
  • Ownable - simple storage, errors, events.
  • Erc20 - erc-20 standard implementation.
  • OwnedToken - modules reuse.
  • BalanceChecker - external contract calls.
  • TimeLockWallet - payable.
• New crate odra-modules a set of reusable modules.
  • Erc20 - erc-20 token.
  • WrappedNativeToken - erc20-based wrapped token.
• CONTRIBUTING.md and SECURITY.md.
• justfile

Changed

• odra
  • Features update: rename wasm to casper, remove wasm-test.
  • Features check: setting casper and mock-vm causes compile error.
  • Mapping's functions: set(), add(), subtract().
  • Var's functions: set(), add(), subtract().
  • Var and Mapping are implemented for OdraType.
  • Add amount parameter to call_contract.
  • contract_env and test_env are modules not structs.
  • To deploy contract in test, structs no longer have deploy_* function, *Deployer structs are generated.
  • The default contract constructor is called *Deployer::default.
• odra-types
  • Add Type enum describing all supported types.
  • Rename Event to OdraEvent.
  • Remove all dependencies.
  • Update VmErrors.
  • Bring contract_def module from odra crate.
  • Remove casper dependencies from contract_def.
• odra-utils
  • Remove odra-types dependency.
  • Change event_absolute_position signature - the function returns Option<usize>.
• odra-codegen
  • Handle odra(payable) attribute.
  • Adjust generated code to framework changes.
• odra-mock-vm
  • MockVM refactor.
  • test_env is a module not a struct.
  • Change call_contract() signature.
  • Add advance_block_time_by(), token_balance(), one_token() functions.
• odra-casper-backend, odra-casper-shared, odra-casper-test-env moved from a separate repository.
• odra-casper-backend
  • contract_env is a module not a struct.
  • Add one_token(), self_balance(), attached_value(), transfer_tokens() functions.
  • Change call_contract() signature
  • odra-casper-test-env
    • test_env is a module not a struct.
    • Change call_contract() signature.
    • Add advance_block_time_by(), token_balance(), one_token() functions.

Removed

• odra extern bindings.
• odra-test-env-wrapper crate.
• Separate changelog files per crate.

[0.1.0] - 2022-08-10

Added

• odra-casper-backend, odra-casper-shared, odra-casper-test-env documentation.

[0.0.1] - 2022-07-20

Added

• odra
  • contract_def provides an abstract definition of a smart contract.
  • external_api module that defines the api to be implemented by a backed blockchain.
  • instance module exposing a trait used to instantiate a module.
  • variable and mapping modules that allow to read and write single values and collections in smart contracts.
  • test_utils module that defines functions and macros to utilize smart contracts testing.
  • unwrap_or_revert module that provides a trait for unwrapping values in the context of smart contract.
  • CHANGELOG.md and README.md files.
• odra-types
  • address module defines a blockchain-agnostic address struct that can be used for storing contract and account addresses.
  • arithmetic module defines traits for safe (revertable), overflowing addition, and subtraction.
  • event module that defines an event interface and companion errors.
  • error module encapsulates errors that may occur during smart contract execution.
  • ToBytes and FromBytes traits for structs serialization and deserialization, e.g. events.
  • CHANGELOG.md and README.md files.
  • Re-export casper-types as odra-types.
• odra-utils
  • camel_to_snake function for the contract name conversion.
  • event_absolute_position function to calculate the event absolute position.
  • CHANGELOG.md and README.md files.
• odra-test-env-wrapper
  • TestBackend defines the api of libodra_test_env.so.
  • on_backend function to interact with libodra_test_env.so.
  • CHANGELOG.md and README.md files.
• odra-mock-vm
  • TestEnv and ContractEnv implementations used to run tests.
  • MockVM, a lightweight blockchain virtual machine.
  • CHANGELOG.md and README.md files.
• odra-proc-macros
  • Procedural macro odra::module.
  • Procedural macro odra::instance.
  • Procedural macro odra::external_contract.
  • Procedural macro odra::execution_error.
  • Procedural macro odra::odra_error.
  • Derive macro Event.
  • CHANGELOG.md and README.md files.
• odra-ir
  • structs responsible for capturing code used to generate code for odra::module, odra::instance, odra::external_contract, odra::execution_error, odra::odra_error, and Event macros.
  • CHANGELOG.md and README.md files.
• odra-codegen
  • code generators for odra::module, odra::instance, odra::external_contract, odra::execution_error, odra::odra_error, and Event macros.
  • CHANGELOG.md and README.md files.
• odra-casper-test-env
  • getter_proxy child crate.
  • CHANGELOG.md and README.md files.
  • env::CasperTestEnv that wraps Casper's InMemoryWasmTestBuilder.
  • #[no_mangle] functions used to communicate with the libodra_test_env.so
• odra-casper-shared
  • casper_address::CasperAddress struct.
  • CHANGELOG.md and README.md files.
• odra-casper-backend
  • codegen module that is used to generate wasm file.
  • backend module that exports all required #[no_mangle] functions and interacts with the Casper Host.
  • CHANGELOG.md and README.md files.
• odra-casper-getter-proxy
  • getter_proxy.rs binary file.