Class: PolymeshTransactionBase<ReturnValue, TransformedReturnValue>
base/PolymeshTransactionBase.PolymeshTransactionBase
Wrapper class for a Polymesh Transaction
Type parameters
| Name | Type |
|---|---|
ReturnValue | void |
TransformedReturnValue | ReturnValue |
Hierarchy
-
PolymeshTransactionBase
Properties
blockHash
• Optional blockHash: string
hash of the block where this transaction resides (status: Succeeded, Failed)
Defined in
base/PolymeshTransactionBase.ts:96
blockNumber
• Optional blockNumber: BigNumber
number of the block where this transaction resides (status: Succeeded, Failed)
Defined in
base/PolymeshTransactionBase.ts:101
error
• Optional error: PolymeshError
stores errors thrown while running the transaction (status: Failed, Aborted)
Defined in
base/PolymeshTransactionBase.ts:76
receipt
• Optional receipt: ISubmittableResult
stores the transaction receipt (if successful)
Defined in
base/PolymeshTransactionBase.ts:81
status
• status: TransactionStatus = TransactionStatus.Idle
current status of the transaction
Defined in
base/PolymeshTransactionBase.ts:71
txHash
• Optional txHash: string
transaction hash (status: Running, Succeeded, Failed)
Defined in
base/PolymeshTransactionBase.ts:86
txIndex
• Optional txIndex: BigNumber
transaction index within its block (status: Succeeded, Failed)
Defined in
base/PolymeshTransactionBase.ts:91
Accessors
isSuccess
• get isSuccess(): boolean
returns true if transaction has completed successfully
Returns
boolean
Defined in
base/PolymeshTransactionBase.ts:801
result
• get result(): TransformedReturnValue
returns the transaction result - this is the same value as the Promise run returns
Returns
TransformedReturnValue
Note
it is generally preferable to await the Promise returned by transaction.run() instead of reading this property
Throws
if the transaction.isSuccess property is false — be sure to check that before accessing!
Defined in
base/PolymeshTransactionBase.ts:718
Methods
getProtocolFees
▸ Abstract getProtocolFees(): Promise<BigNumber>
Return this transaction's protocol fees. These are extra fees charged for specific operations on the chain. Not to be confused with network fees (which depend on the complexity of the operation), protocol fees are set by governance and/or chain upgrades
Returns
Promise<BigNumber>
Defined in
base/PolymeshTransactionBase.ts:646
getTotalFees
▸ getTotalFees(): Promise<PayingAccountFees>
Retrieve a breakdown of the fees required to run this transaction, as well as the Account responsible for paying them
Returns
Promise<PayingAccountFees>
Note
these values might be inaccurate if the transaction is run at a later time. This can be due to a governance vote or other chain related factors (like modifications to a specific subsidizer relationship or a chain upgrade)
Defined in
base/PolymeshTransactionBase.ts:438
onProcessedByMiddleware
▸ onProcessedByMiddleware(listener): UnsubCallback
Subscribe to the results of this transaction being processed by the indexing service (and as such, available to the middleware)
Parameters
| Name | Type | Description |
|---|---|---|
listener | (err?: PolymeshError) => void | callback function that will be called whenever the middleware is updated with the latest data. If there is an error (timeout or middleware offline) it will be passed to this callback |
Returns
unsubscribe function
Note
this event will be fired even if the queue fails
Throws
if the middleware wasn't enabled when instantiating the SDK client
Defined in
base/PolymeshTransactionBase.ts:478
onStatusChange
▸ onStatusChange(listener): UnsubCallback
Subscribe to status changes
Parameters
| Name | Type | Description |
|---|---|---|
listener | (transaction: GenericPolymeshTransaction<ReturnValue, TransformedReturnValue>) => void | callback function that will be called whenever the status changes |
Returns
unsubscribe function
Defined in
base/PolymeshTransactionBase.ts:420
run
▸ run(): Promise<TransformedReturnValue>
Run the transaction, update its status and return a result if applicable. Certain transactions create Entities on the blockchain, and those Entities are returned for convenience. For example, when running a transaction that creates an Asset, the Asset itself is returned
Returns
Promise<TransformedReturnValue>
Defined in
base/PolymeshTransactionBase.ts:195
supportsSubsidy
▸ Abstract supportsSubsidy(): boolean
Return whether the transaction can be subsidized. If the result is false AND the caller is being subsidized by a third party, the transaction can't be executed and trying to do so will result in an error
Returns
boolean
Note
this depends on the type of transaction itself (e.g. staking.bond can't be subsidized, but asset.createAsset can)
Defined in
base/PolymeshTransactionBase.ts:616
toSignablePayload
▸ toSignablePayload(metadata?): Promise<TransactionPayload>
Returns a representation intended for offline signers.
Parameters
| Name | Type |
|---|---|
metadata | Record<string, string> |
Returns
Promise<TransactionPayload>
Note
Usually .run() should be preferred due to is simplicity.
Note
When using this method, details like account nonces, and transaction mortality require extra consideration. Generating a payload for offline sign implies asynchronicity. If using this API, be sure each procedure is created with the correct nonce, accounting for in flight transactions, and the lifetime is sufficient.