TransactionBuilder

concordium_rust_sdk::contract_client

Struct TransactionBuilder 

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pub struct TransactionBuilder<const ADD_ENERGY: bool, Inner> { /* private fields */ }
Expand description

A builder of transactions out of minimal data typically obtained by dry-running.

The concrete instances of this type, ContractInitBuilder and ContractUpdateBuilder have more detailed information on usage.

The ADD_ENERGY constant is used to indicate whether the builder should allow adding extra energy. This is only useful for transactions that have dynamic cost, namely contract initializations and updates.

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impl<const ADD: bool, Inner> TransactionBuilder<ADD, Inner>

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pub fn expiry(self, expiry: TransactionTime) -> Self

Set the expiry time for the transaction. If not set the default is one hour from the time the transaction is signed.

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pub fn nonce(self, nonce: Nonce) -> Self

Set the nonce for the transaction. If not set the default behaviour is to get the nonce from the connected Client at the time the transaction is sent.

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pub fn current_energy(&self) -> Energy

Return the amount of Energy that will be allowed for the transaction if the transaction was sent with the current parameters.

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pub async fn send_inner<A>( self, signer: &impl ExactSizeTransactionSigner, k: impl FnOnce(TransactionHash, Client) -> A, ) -> QueryResult<A>

Send the transaction and return a handle that can be queried for the status.

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impl<Inner> TransactionBuilder<true, Inner>

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pub fn extra_energy(self, energy: Energy) -> Self

Add extra energy to the call. The default amount is 10%, or at least 50. This should be sufficient in most cases, but for specific contracts no extra energy might be needed, or a greater safety margin could be desired.

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impl<Type> TransactionBuilder<true, ContractInitInner<Type>>

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pub async fn dry_run_new_instance<P: Serial>( client: Client, sender: AccountAddress, mod_ref: ModuleReference, name: &str, amount: Amount, parameter: &P, ) -> Result<Self, DryRunNewInstanceError>

Attempt to dry run a smart contract initialization transaction.

In contrast to dry_run_new_instance_raw this automatically serializes the provided parameter.

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pub async fn dry_run_new_instance_raw( client: Client, sender: AccountAddress, mod_ref: ModuleReference, name: &str, amount: Amount, parameter: OwnedParameter, ) -> Result<Self, DryRunNewInstanceError>

Attempt to dry run a smart contract initialization transaction. In case of success the resulting value can be used to extract the generated events from the dry-run, and sign and send the transaction.

The arguments are

  • client - the client to connect to the node
  • sender - the account that will be sending the transaction
  • mod_ref - the reference to the module on chain from which the instance is to be created
  • name - the name of the contract (NB: without the init_ prefix)
  • amount - the amount of CCD to initialize the instance with
  • parameter - the parameter to send to the initialization method of the contract.
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pub fn event(&self) -> &ContractInitializedEvent

Access to the generated events.

Note that these are events generated as part of a dry run. Since time passes between the dry run and the actual transaction the transaction might behave differently.

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pub async fn send( self, signer: &impl ExactSizeTransactionSigner, ) -> QueryResult<ContractInitHandle<Type>>

Send the transaction and return a handle that can be queried for the status.

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impl TransactionBuilder<false, HashBytes<ModuleReferenceMarker>>

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pub async fn dry_run_module_deploy( client: Client, sender: AccountAddress, module: WasmModule, ) -> Result<Self, DryRunModuleDeployError>

Attempt to dry run a module deployment transaction.

In case of success the return value can be used to send the transaction to affect the module deployment.

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impl TransactionBuilder<false, HashBytes<ModuleReferenceMarker>>

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pub async fn send( self, signer: &impl ExactSizeTransactionSigner, ) -> QueryResult<ModuleDeployHandle>

Send the transaction and return a handle that can be queried for the status.

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impl TransactionBuilder<true, ContractUpdateInner>

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pub async fn send( self, signer: &impl ExactSizeTransactionSigner, ) -> QueryResult<ContractUpdateHandle>

Send the transaction and return a handle that can be queried for the status.

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pub fn return_value(&self) -> Option<&ReturnValue>

Get the return value from dry-running.

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pub fn events(&self) -> &[Upward<ContractTraceElement>]

Get the events generated from the dry-run.

Since newer versions of the Concordium Node API might introduce new variants of ContractTraceElement the result might contain Upward::Unknown.

Auto Trait Implementations§

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impl<const ADD_ENERGY: bool, Inner> !Freeze for TransactionBuilder<ADD_ENERGY, Inner>

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impl<const ADD_ENERGY: bool, Inner> !RefUnwindSafe for TransactionBuilder<ADD_ENERGY, Inner>

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impl<const ADD_ENERGY: bool, Inner> Send for TransactionBuilder<ADD_ENERGY, Inner>
where Inner: Send,

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impl<const ADD_ENERGY: bool, Inner> Sync for TransactionBuilder<ADD_ENERGY, Inner>
where Inner: Sync,

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impl<const ADD_ENERGY: bool, Inner> Unpin for TransactionBuilder<ADD_ENERGY, Inner>
where Inner: Unpin,

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impl<const ADD_ENERGY: bool, Inner> !UnwindSafe for TransactionBuilder<ADD_ENERGY, Inner>

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