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{"version":3,"sources":["../../src/transactions/management/transactionWorker.ts"],"sourcesContent":["/* eslint-disable no-await-in-loop */\n\nimport EventEmitter from \"eventemitter3\";\nimport { AptosConfig } from \"../../api/aptosConfig\";\nimport { Account } from \"../../account\";\nimport { waitForTransaction } from \"../../internal/transaction\";\nimport { generateTransaction, signAndSubmitTransaction } from \"../../internal/transactionSubmission\";\nimport { PendingTransactionResponse, TransactionResponse } from \"../../types\";\nimport { InputGenerateTransactionOptions, InputGenerateTransactionPayloadData } from \"../types\";\nimport { AccountSequenceNumber } from \"./accountSequenceNumber\";\nimport { AsyncQueue, AsyncQueueCancelledError } from \"./asyncQueue\";\nimport { SimpleTransaction } from \"../instances/simpleTransaction\";\n\nexport const promiseFulfilledStatus = \"fulfilled\";\n\n/**\n * Events emitted by the transaction worker during its operation, allowing the dapp to respond to various transaction states.\n */\nexport enum TransactionWorkerEventsEnum {\n // fired after a transaction gets sent to the chain\n TransactionSent = \"transactionSent\",\n // fired if there is an error sending the transaction to the chain\n TransactionSendFailed = \"transactionSendFailed\",\n // fired when a single transaction has executed successfully\n TransactionExecuted = \"transactionExecuted\",\n // fired if a single transaction fails in execution\n TransactionExecutionFailed = \"transactionExecutionFailed\",\n // fired when the worker has finished its job / when the queue has been emptied\n ExecutionFinish = \"executionFinish\",\n}\n\n/**\n * Defines the events emitted by the transaction worker during various stages of transaction processing. *\n * @event transactionSent - Emitted when a transaction is successfully sent.\n * @event transactionSendFailed - Emitted when sending a transaction fails.\n * @event transactionExecuted - Emitted when a transaction is successfully executed.\n * @event transactionExecutionFailed - Emitted when executing a transaction fails.\n * @event executionFinish - Emitted when the execution process is finished.\n */\nexport interface TransactionWorkerEvents {\n transactionSent: (data: SuccessEventData) => void;\n transactionSendFailed: (data: FailureEventData) => void;\n transactionExecuted: (data: SuccessEventData) => void;\n transactionExecutionFailed: (data: FailureEventData) => void;\n executionFinish: (data: ExecutionFinishEventData) => void;\n}\n\n/**\n * The payload for when the worker has finished its job.\n */\nexport type ExecutionFinishEventData = {\n message: string;\n};\n\n/**\n * The payload for a success event.\n */\nexport type SuccessEventData = {\n message: string;\n transactionHash: string;\n};\n\n/**\n * The payload for a failure event.\n */\nexport type FailureEventData = {\n message: string;\n error: string;\n};\n\n/**\n * TransactionWorker provides a simple framework for receiving payloads to be processed.\n *\n * Once one `start()` the process and pushes a new transaction, the worker acquires\n * the current account's next sequence number (by using the AccountSequenceNumber class),\n * generates a signed transaction and pushes an async submission process into the `outstandingTransactions` queue.\n * At the same time, the worker processes transactions by reading the `outstandingTransactions` queue\n * and submits the next transaction to chain, it\n * 1) waits for resolution of the submission process or get pre-execution validation error\n * and 2) waits for the resolution of the execution process or get an execution error.\n * The worker fires events for any submission and/or execution success and/or failure.\n */\nexport class TransactionWorker extends EventEmitter<TransactionWorkerEvents> {\n readonly aptosConfig: AptosConfig;\n\n readonly account: Account;\n\n // current account sequence number\n // TODO: Rename Sequnce -> Sequence\n readonly accountSequnceNumber: AccountSequenceNumber;\n\n readonly taskQueue: AsyncQueue<() => Promise<void>> = new AsyncQueue<() => Promise<void>>();\n\n // process has started\n started: boolean;\n\n /**\n * transactions payloads waiting to be generated and signed\n *\n * TODO support entry function payload from ABI builder\n */\n transactionsQueue = new AsyncQueue<\n [InputGenerateTransactionPayloadData, InputGenerateTransactionOptions | undefined]\n >();\n\n /**\n * signed transactions waiting to be submitted\n */\n outstandingTransactions = new AsyncQueue<[Promise<PendingTransactionResponse>, bigint]>();\n\n /**\n * transactions that have been submitted to chain\n */\n sentTransactions: Array<[string, bigint, any]> = [];\n\n /**\n * transactions that have been committed to chain\n */\n executedTransactions: Array<[string, bigint, any]> = [];\n\n /**\n * Initializes a new instance of the class, providing a framework for receiving payloads to be processed.\n *\n * @param aptosConfig - A configuration object for Aptos.\n * @param account - The account that will be used for sending transactions.\n * @param maxWaitTime - The maximum wait time to wait before re-syncing the sequence number to the current on-chain state,\n * default is 30 seconds.\n * @param maximumInFlight - The maximum number of transactions that can be submitted per account, default is 100.\n * @param sleepTime - The time to wait in seconds before re-evaluating if the maximum number of transactions are in flight,\n * default is 10 seconds.\n */\n constructor(\n aptosConfig: AptosConfig,\n account: Account,\n maxWaitTime: number = 30,\n maximumInFlight: number = 100,\n sleepTime: number = 10,\n ) {\n super();\n this.aptosConfig = aptosConfig;\n this.account = account;\n this.started = false;\n this.accountSequnceNumber = new AccountSequenceNumber(\n aptosConfig,\n account,\n maxWaitTime,\n maximumInFlight,\n sleepTime,\n );\n }\n\n /**\n * Submits the next transaction for the account by generating it with the current sequence number\n * and adding it to the outstanding transaction queue for processing.\n * This function continues to submit transactions until there are no more to process.\n *\n * @throws {Error} Throws an error if the transaction submission fails.\n */\n async submitNextTransaction() {\n try {\n /* eslint-disable no-constant-condition */\n while (true) {\n const sequenceNumber = await this.accountSequnceNumber.nextSequenceNumber();\n if (sequenceNumber === null) return;\n const transaction = await this.generateNextTransaction(this.account, sequenceNumber);\n if (!transaction) return;\n const pendingTransaction = signAndSubmitTransaction({\n aptosConfig: this.aptosConfig,\n transaction,\n signer: this.account,\n });\n await this.outstandingTransactions.enqueue([pendingTransaction, sequenceNumber]);\n }\n } catch (error: any) {\n if (error instanceof AsyncQueueCancelledError) {\n return;\n }\n throw new Error(`Submit transaction failed for ${this.account.accountAddress.toString()} with error ${error}`);\n }\n }\n\n /**\n * Reads the outstanding transaction queue and submits the transactions to the chain.\n * This function processes each transaction, checking their status and emitting events based on whether they were successfully\n * sent or failed.\n *\n * @throws {Error} Throws an error if the process execution fails.\n * @event TransactionWorkerEventsEnum.TransactionSent - Emitted when a transaction has been successfully committed to the chain.\n * @event TransactionWorkerEventsEnum.TransactionSendFailed - Emitted when a transaction fails to commit, along with the error\n * reason.\n * @event TransactionWorkerEventsEnum.ExecutionFinish - Emitted when the execution of transactions is complete.\n */\n async processTransactions() {\n try {\n /* eslint-disable no-constant-condition */\n while (true) {\n const awaitingTransactions = [];\n const sequenceNumbers = [];\n let [pendingTransaction, sequenceNumber] = await this.outstandingTransactions.dequeue();\n\n awaitingTransactions.push(pendingTransaction);\n sequenceNumbers.push(sequenceNumber);\n\n while (!this.outstandingTransactions.isEmpty()) {\n [pendingTransaction, sequenceNumber] = await this.outstandingTransactions.dequeue();\n\n awaitingTransactions.push(pendingTransaction);\n sequenceNumbers.push(sequenceNumber);\n }\n // send awaiting transactions to chain\n const sentTransactions = await Promise.allSettled(awaitingTransactions);\n for (let i = 0; i < sentTransactions.length && i < sequenceNumbers.length; i += 1) {\n // check sent transaction status\n const sentTransaction = sentTransactions[i];\n sequenceNumber = sequenceNumbers[i];\n if (sentTransaction.status === promiseFulfilledStatus) {\n // transaction sent to chain\n this.sentTransactions.push([sentTransaction.value.hash, sequenceNumber, null]);\n // check sent transaction execution\n this.emit(TransactionWorkerEventsEnum.TransactionSent, {\n message: `transaction hash ${sentTransaction.value.hash} has been committed to chain`,\n transactionHash: sentTransaction.value.hash,\n });\n await this.checkTransaction(sentTransaction, sequenceNumber);\n } else {\n // send transaction failed\n this.sentTransactions.push([sentTransaction.status, sequenceNumber, sentTransaction.reason]);\n this.emit(TransactionWorkerEventsEnum.TransactionSendFailed, {\n message: `failed to commit transaction ${this.sentTransactions.length} with error ${sentTransaction.reason}`,\n error: sentTransaction.reason,\n });\n }\n }\n this.emit(TransactionWorkerEventsEnum.ExecutionFinish, {\n message: `execute ${sentTransactions.length} transactions finished`,\n });\n }\n } catch (error: any) {\n if (error instanceof AsyncQueueCancelledError) {\n return;\n }\n throw new Error(`Process execution failed for ${this.account.accountAddress.toString()} with error ${error}`);\n }\n }\n\n /**\n * Once a transaction has been sent to the chain, this function checks for its execution status.\n * @param sentTransaction - The transaction that was sent to the chain and is now waiting to be executed.\n * @param sequenceNumber - The account's sequence number that was sent with the transaction.\n */\n async checkTransaction(sentTransaction: PromiseFulfilledResult<PendingTransactionResponse>, sequenceNumber: bigint) {\n try {\n const waitFor: Array<Promise<TransactionResponse>> = [];\n waitFor.push(waitForTransaction({ aptosConfig: this.aptosConfig, transactionHash: sentTransaction.value.hash }));\n const sentTransactions = await Promise.allSettled(waitFor);\n\n for (let i = 0; i < sentTransactions.length; i += 1) {\n const executedTransaction = sentTransactions[i];\n if (executedTransaction.status === promiseFulfilledStatus) {\n // transaction executed to chain\n this.executedTransactions.push([executedTransaction.value.hash, sequenceNumber, null]);\n this.emit(TransactionWorkerEventsEnum.TransactionExecuted, {\n message: `transaction hash ${executedTransaction.value.hash} has been executed on chain`,\n transactionHash: sentTransaction.value.hash,\n });\n } else {\n // transaction execution failed\n this.executedTransactions.push([executedTransaction.status, sequenceNumber, executedTransaction.reason]);\n this.emit(TransactionWorkerEventsEnum.TransactionExecutionFailed, {\n message: `failed to execute transaction ${this.executedTransactions.length} with error ${executedTransaction.reason}`,\n error: executedTransaction.reason,\n });\n }\n }\n } catch (error: any) {\n throw new Error(`Check transaction failed for ${this.account.accountAddress.toString()} with error ${error}`);\n }\n }\n\n /**\n * Pushes a transaction to the transactions queue for processing.\n *\n * @param transactionData - The transaction payload containing necessary details.\n * @param transactionData.abi - For all entry function payloads, the ABI to skip remote ABI lookups.\n * @param options - Optional parameters for transaction configuration.\n * @param options.maxGasAmount - Maximum gas amount for the transaction.\n * @param options.gasUnitPrice - Gas unit price for the transaction.\n * @param options.expireTimestamp - Expiration timestamp on the transaction.\n * @param options.accountSequenceNumber - The sequence number for the transaction.\n */\n async push(\n transactionData: InputGenerateTransactionPayloadData,\n options?: InputGenerateTransactionOptions,\n ): Promise<void> {\n this.transactionsQueue.enqueue([transactionData, options]);\n }\n\n /**\n * Generates a signed transaction that can be submitted to the chain.\n *\n * @param account - An Aptos account used as the sender of the transaction.\n * @param sequenceNumber - A sequence number the transaction will be generated with.\n * @returns A signed transaction object or undefined if the transaction queue is empty.\n */\n async generateNextTransaction(account: Account, sequenceNumber: bigint): Promise<SimpleTransaction | undefined> {\n if (this.transactionsQueue.isEmpty()) return undefined;\n const [transactionData, options] = await this.transactionsQueue.dequeue();\n return generateTransaction({\n aptosConfig: this.aptosConfig,\n sender: account.accountAddress,\n data: transactionData,\n options: { ...options, accountSequenceNumber: sequenceNumber },\n });\n }\n\n /**\n * Starts transaction submission and processing by executing tasks from the queue until it is cancelled.\n *\n * @throws {Error} Throws an error if unable to start transaction batching.\n */\n async run() {\n try {\n while (!this.taskQueue.isCancelled()) {\n const task = await this.taskQueue.dequeue();\n await task();\n }\n } catch (error: any) {\n throw new Error(`Unable to start transaction batching: ${error}`);\n }\n }\n\n /**\n * Starts the transaction management process.\n *\n * @throws {Error} Throws an error if the worker has already started.\n */\n start() {\n if (this.started) {\n throw new Error(\"worker has already started\");\n }\n this.started = true;\n this.taskQueue.enqueue(() => this.submitNextTransaction());\n 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