Trait Env

Source

pub trait Env {
    // Required methods
    fn signer_account_id(&self) -> AccountId;
    fn current_account_id(&self) -> AccountId;
    fn predecessor_account_id(&self) -> AccountId;
    fn block_height(&self) -> u64;
    fn block_timestamp(&self) -> Timestamp;
    fn attached_deposit(&self) -> u128;
    fn random_seed(&self) -> H256;
    fn prepaid_gas(&self) -> NearGas;
    fn used_gas(&self) -> NearGas;

    // Provided methods
    fn assert_private_call(&self) -> Result<(), PrivateCallError> { ... }
    fn assert_one_yocto(&self) -> Result<(), OneYoctoAttachError> { ... }
}

Expand description

Returns information about the NEAR context in which the transaction is executing. In the case of a standalone binary, independent of NEAR these values would need to be mocked or otherwise passed in from an external source.