Attribute Macro exonum_interface

#[exonum_interface]

Derives an Exonum service interface for the specified trait.

See the documentation of the Exonum crate for more information.

Attributes

crate

#[exonum_interface(crate = "path")]

Prefix of the exonum crate has two main values - crate or exonum. The default value is exonum.

removed_method_ids

#[exonum_interface(removed_method_ids(0, 2, 5))]

Marks methods with the following IDs as removed. An attempt to invoke the method with corresponding ID will always result in an error.

Using this attribute is a recommended way to remove methods from interface, since it guarantees that method ID won’t be reused.

This attribute cannot be used with auto_ids attribute set.

id_auto_increment

#[exonum_interface(auto_ids)]

Enables automatic ID assignment for interface methods. This may be useful for writing tests, but not recommended for production code.

Method attributes

interface_method

#[interface_method(id = 0)]

All the method in the trait with exonum_interface attribute should have interface_method attribute with unsigned integer value. All the method IDs should be unique.