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eulith-web3js-core

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Eulith core web3js SDK (code to access Eulith services via web3js)

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"use strict"; var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) { if (k2 === undefined) k2 = k; var desc = Object.getOwnPropertyDescriptor(m, k); if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) { desc = { enumerable: true, get: function() { return m[k]; } }; } Object.defineProperty(o, k2, desc); }) : (function(o, m, k, k2) { if (k2 === undefined) k2 = k; o[k2] = m[k]; })); var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) { Object.defineProperty(o, "default", { enumerable: true, value: v }); }) : function(o, v) { o["default"] = v; }); var __importStar = (this && this.__importStar) || function (mod) { if (mod && mod.__esModule) return mod; var result = {}; if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k); __setModuleDefault(result, mod); return result; }; var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) { function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); } return new (P || (P = Promise))(function (resolve, reject) { function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } } function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } } function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); } step((generator = generator.apply(thisArg, _arguments || [])).next()); }); }; var __importDefault = (this && this.__importDefault) || function (mod) { return (mod && mod.__esModule) ? mod : { "default": mod }; }; Object.defineProperty(exports, "__esModule", { value: true }); exports.EulithWeb3 = void 0; const web3_1 = __importDefault(require("web3")); const crypto = require("crypto"); // import crypto doesn't work from (at least some) reactjs browser apps const Eulith = __importStar(require("../src/index")); function LogErr_(logger, w, e) { var _a; logger === null || logger === void 0 ? void 0 : logger.log(Eulith.Logging.LogLevel.ERROR, `Error while ${w}: ${e.message}; details: ${JSON.stringify((_a = e.response) === null || _a === void 0 ? void 0 : _a.data)}`); } /** * @typedef Eulith.Web3 * * This can be used to access Eulith-specific APIs, but often all that is needed * is Eulith.Provider, and that can be used directly with a web3 js object. * * @todo For now - extend Web3 the way the python code does. Perhaps do a class for just eulith-specific methods * or perhaps find a more object oriented path (like we did for AtomicTx) * * Also note - this API deviates from the web3js and etherjs patterns in one important respect: * their sendTransaction API returns a promise which resolves * <https://web3js.readthedocs.io/en/v1.2.11/web3-eth.html#sendtransaction> 'when the transaction receipt is available.' * (oversimplifying, PromiEvent) * * This causes a number of problems when using the Eulith atomic transactions, because we NEVER generate those transaction receipts. * and by default, web3js keeps a waiter around polling (at least on http and in some ways as bad with websocket/etc). It causes * false positive errors to be reported from various channels (e.g. automation tests). And wastes resources. * * So we follow the web3.py pattern, and return a Promise<HASH TAG> instead (eulith_send_and_sign_transaction). * * Then, the caller may poll wait with the that hash * await ew3.eth.getTransactionReceipt(txHash) * to get the receipt. * * Another 'deviation' to report/note, is that the python API has the (exposed in the API) concept of 'signing middleware'. * EVEN IF this makes sense in the python implementation (I doubt), I propose changing the public API instead to take a * 'signer' object. And have that 'signer' object ONLY be used in the context of a new proposed method - eulith_send_and_sign_transaction * - and have that do the signing, INSTEAD of the hooking of eth.send_transaction. * * The current behavior of the python code is quite idiosyncratic, and confusing, with respect to WHEN the send_transaction calls * are intercepted and signed (in context of an atomic transaction changes things, as does from/to address/presence of signature etc). * * Perhaps better to have an explicit method eulith_send_and_sign_transaction so you know you are signing (seems like the API flows * require the caller to know / understand this anyhow). * */ class EulithWeb3 extends web3_1.default { /** * @constructor * @param provider - this is a web3js provider, plus supports eulith apis * @param disable_transaction_polling defaults true * @param signer - modifies the behavior of a number of eulith apis (not web3.eth apis) - to include the signers address - but mostly for eulith_send_and_sign_transaction * * @todo discuss with Moh/Kristian if it might be cleaner to make ISigner a parameter to those APIs? So this subtlty is clear */ constructor({ provider, signer, disable_transaction_polling }) { super(); if (provider == null) { throw new Error("Cannot construct Eulith.Web3 without a Eulith.Provider"); } if (disable_transaction_polling == null) { disable_transaction_polling = true; } if (disable_transaction_polling == true) { this.eth.transactionPollingTimeout = 0; } this.logger_ = provider.logger; if (signer) { this.signer_ = Eulith.Signing.SigningService.assure(signer, provider); provider = provider.cloneWithSigner(this.signer_); } this.setProvider(provider); if (this.signer_ == null) { this.providerForAPIsRequiringAuthAddressField_ = provider; } else { this.providerForAPIsRequiringAuthAddressField_ = provider.cloneWithURLAdditions({ auth_address: this.signer_.address }); } } /** * The signer is an optional property of a web3 object, so this can return null */ get signer() { return this.signer_; } /** * Fetch the logger associate dwith this web3 object. */ get logger() { return this.logger_; } /** * @todo CONSIDER DEPRECATING * * delegate to this.eth.sendTransaction, but just return the transaction hash; * * to get the txReceipt, CALL * const txReceipt: TransactionReceipt = await ew3.eth.getTransactionReceipt(txHash); * @param transactionConfig * @returns * * This method is PERHAPS not useful, since there is probably no point in ever sending unsigned transactions * (besides our use in transactions, which could be done differently, and certainly doesnt require this to be public) */ eulith_send_unsigned_transaction(transactionConfig, extraURLQueryParams) { return __awaiter(this, void 0, void 0, function* () { let p = new Promise((resolve, reject) => __awaiter(this, void 0, void 0, function* () { const txRes = this.eth .sendTransaction(transactionConfig) .once("transactionHash", (transactionHash) => { resolve(transactionHash); }) .once("error", (error) => { reject(error); }) .catch((reason) => reject(reason)); })); return p; }); } /* * @todo DOCUMENT * @todo consider migrating to Swaps module... */ // def eulith_swap_quote(self, params: Eulith.SwapRequest) -> (float, List[TxParams]): eulith_swap_quote(params) { var _a; return __awaiter(this, void 0, void 0, function* () { const wireFormatParams = { sell_token: params.sellToken.address, buy_token: params.buyToken.address, sell_amount: params.sellAmount }; if (params.recipient) { wireFormatParams["recipient"] = params.recipient; } if (params.routeThrough) { wireFormatParams["route_through"] = params.routeThrough; } if (params.liquiditySource) { wireFormatParams["liquidity_source"] = params.liquiditySource; } if (params.slippageTolerance) { wireFormatParams["slippage_tolerance"] = params.slippageTolerance; } const result = yield this.providerForAPIsRequiringAuthAddressField_.request({ method: "eulith_swap", params: [wireFormatParams] }); return [(_a = result.price) !== null && _a !== void 0 ? _a : 0.0, result.txs]; }); } /** * Send a series of transactions (eulith_send_and_sign_transaction), and wait for each to be confirmed, * returning the transaction receipts of each. * * At any point, one of them could fail, with some having gone on to completion. This process aborts at that time * and offers no clues about how many were processed (could include the completed ones in a special exception) * * @param txs * @returns */ eulith_send_multi_transaction(txs) { return __awaiter(this, void 0, void 0, function* () { let results = []; if (this.signer_ == null) { throw new Error("This API requires a valid signer provided to the EulithWeb3 object"); } // accumulate all the promises, and wait all at once let promises = []; for (const tx of txs) { const txHash = yield this.provider.signAndSendTransaction(tx, this.signer); const txReceipt = yield this.eth.getTransactionReceipt(txHash); results.push(txReceipt); } return results; }); } /** * Returns the provider object associated with this transaction. * * @todo NOTE due to quirks of how we implement signing, and cloning etc, this might not be the same * provider, but instead one derieved from - the original one provided in the constructor. */ get provider() { return this.providerForAPIsRequiringAuthAddressField_; 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// import crypto doesn't work from (at least some) reactjs browser apps\n\nimport * as Eulith from \"../src/index\";\n\nfunction LogErr_(logger: Eulith.Logging.ILogger, w: string, e: AxiosError): void {\n    logger?.log(\n        Eulith.Logging.LogLevel.ERROR,\n        `Error while ${w}: ${e.message}; details: ${JSON.stringify(e.response?.data)}`\n    );\n}\n\n/**\n *  @typedef Eulith.Web3\n *\n *  This can be used to access Eulith-specific APIs, but often all that is needed\n *  is Eulith.Provider, and that can be used directly with a web3 js object.\n *\n *  @todo For now - extend Web3 the way the python code does. Perhaps do a class for just eulith-specific methods\n *  or perhaps find a more object oriented path (like we did for AtomicTx)\n *\n *  Also note - this API deviates from the web3js and etherjs patterns in one important respect:\n *  their sendTransaction API returns a promise which resolves\n *      <https://web3js.readthedocs.io/en/v1.2.11/web3-eth.html#sendtransaction> 'when the transaction receipt is available.'\n *      (oversimplifying, PromiEvent)\n *\n *  This causes a number of problems when using the Eulith atomic transactions, because we NEVER generate those transaction receipts.\n *  and by default, web3js keeps a waiter around polling (at least on http and in some ways as bad with websocket/etc). It causes\n *  false positive errors to be reported from various channels (e.g. automation tests). And wastes resources.\n *\n *  So we follow the web3.py pattern, and return a Promise<HASH TAG> instead (eulith_send_and_sign_transaction).\n *\n *  Then, the caller may poll wait with the that hash\n *      await ew3.eth.getTransactionReceipt(txHash)\n *  to get the receipt.\n *\n *  Another 'deviation' to report/note, is that the python API has the (exposed in the API) concept of 'signing middleware'.\n *  EVEN IF this makes sense in the python implementation (I doubt), I propose changing the public API instead to take a\n *  'signer' object. And have that 'signer' object ONLY be used in the context of a new proposed method - eulith_send_and_sign_transaction\n *  - and have that do the signing, INSTEAD of the hooking of eth.send_transaction.\n *\n *  The current behavior of the python code is quite idiosyncratic, and confusing, with respect to WHEN the send_transaction calls\n *  are intercepted and signed (in context of an atomic transaction changes things, as does from/to address/presence of signature etc).\n *\n *  Perhaps better to have an explicit method eulith_send_and_sign_transaction so you know you are signing (seems like the API flows\n *  require the caller to know / understand this anyhow).\n *\n */\nexport class EulithWeb3 extends Web3 {\n    /**\n     * @constructor\n     * @param provider - this is a web3js provider, plus supports eulith apis\n     * @param disable_transaction_polling defaults true\n     * @param signer - modifies the behavior of a number of eulith apis (not web3.eth apis) - to include the signers address - but mostly for eulith_send_and_sign_transaction\n     *\n     * @todo discuss with Moh/Kristian if it might be cleaner to make ISigner a parameter to those APIs? So this subtlty is clear\n     */\n    public constructor({\n        provider,\n        signer,\n        disable_transaction_polling\n    }: {\n        provider: Eulith.Provider;\n        signer?: Eulith.Signing.ICryptographicSigner | Eulith.Signing.SigningService;\n        disable_transaction_polling?: boolean;\n    }) {\n        super();\n\n        if (provider == null) {\n            throw new Error(\"Cannot construct Eulith.Web3 without a Eulith.Provider\");\n        }\n\n        if (disable_transaction_polling == null) {\n            disable_transaction_polling = true;\n        }\n        if (disable_transaction_polling == true) {\n            this.eth.transactionPollingTimeout = 0;\n        }\n\n        this.logger_ = provider.logger;\n\n        if (signer) {\n            this.signer_ = Eulith.Signing.SigningService.assure(signer, provider);\n            provider = provider.cloneWithSigner(this.signer_);\n        }\n        this.setProvider(provider);\n\n        if (this.signer_ == null) {\n            this.providerForAPIsRequiringAuthAddressField_ = provider;\n        } else {\n            this.providerForAPIsRequiringAuthAddressField_ = provider.cloneWithURLAdditions({\n                auth_address: this.signer_.address\n            });\n        }\n    }\n\n    /**\n     *  The signer is an optional property of a web3 object, so this can return null\n     */\n    public get signer(): Eulith.Signing.SigningService | undefined {\n        return this.signer_;\n    }\n\n    /**\n     *  Fetch the logger associate dwith this web3 object.\n     */\n    public get logger(): Eulith.Logging.ILogger {\n        return this.logger_;\n    }\n\n    /**\n     *  @todo CONSIDER DEPRECATING\n     *\n     *  delegate to this.eth.sendTransaction, but just return the transaction hash;\n     *\n     *  to get the txReceipt, CALL\n     *      const txReceipt: TransactionReceipt = await ew3.eth.getTransactionReceipt(txHash);\n     * @param transactionConfig\n     * @returns\n     *\n     *  This method is PERHAPS not useful, since there is probably no point in ever sending unsigned transactions\n     *  (besides our use in transactions, which could be done differently, and certainly doesnt require this to be public)\n     */\n    public async eulith_send_unsigned_transaction(\n        transactionConfig: TransactionConfig,\n        extraURLQueryParams?: { [key: string]: string }\n    ): Promise<string> {\n        let p = new Promise<string>(async (resolve, reject) => {\n            const txRes = this.eth\n                .sendTransaction(transactionConfig)\n                .once(\"transactionHash\", (transactionHash: string) => {\n                    resolve(transactionHash);\n                })\n                .once(\"error\", (error: Error) => {\n                    reject(error);\n                })\n                .catch((reason) => reject(reason));\n        });\n        return p;\n    }\n\n    /*\n     *  @todo DOCUMENT\n     *  @todo consider migrating to Swaps module...\n     */\n    // def eulith_swap_quote(self, params: Eulith.SwapRequest) -> (float, List[TxParams]):\n    public async eulith_swap_quote(params: Eulith.Swaps.Request): Promise<[number, TransactionConfig[]]> {\n        const wireFormatParams = {\n            sell_token: params.sellToken.address,\n            buy_token: params.buyToken.address,\n            sell_amount: params.sellAmount\n        };\n        if (params.recipient) {\n            wireFormatParams[\"recipient\"] = params.recipient;\n        }\n        if (params.routeThrough) {\n            wireFormatParams[\"route_through\"] = params.routeThrough;\n        }\n        if (params.liquiditySource) {\n            wireFormatParams[\"liquidity_source\"] = params.liquiditySource;\n        }\n        if (params.slippageTolerance) {\n            wireFormatParams[\"slippage_tolerance\"] = params.slippageTolerance;\n        }\n        const result = await this.providerForAPIsRequiringAuthAddressField_.request({\n            method: \"eulith_swap\",\n            params: [wireFormatParams]\n        });\n        return [result.price ?? 0.0, result.txs];\n    }\n\n    /**\n     *  Send a series of transactions (eulith_send_and_sign_transaction), and wait for each to be confirmed,\n     *  returning the transaction receipts of each.\n     *\n     *  At any point, one of them could fail, with some having gone on to completion. This process aborts at that time\n     *  and offers no clues about how many were processed (could include the completed ones in a special exception)\n     *\n     * @param txs\n     * @returns\n     */\n    async eulith_send_multi_transaction(txs: TransactionConfig[]): Promise<TransactionReceipt[]> {\n        let results = [];\n        if (this.signer_ == null) {\n            throw new Error(\"This API requires a valid signer provided to the EulithWeb3 object\");\n        }\n        // accumulate all the promises, and wait all at once\n        let promises = [];\n        for (const tx of txs) {\n            const txHash: string = await this.provider.signAndSendTransaction(tx, this.signer);\n            const txReceipt: TransactionReceipt = await this.eth.getTransactionReceipt(txHash);\n            results.push(txReceipt);\n        }\n        return results;\n    }\n\n    /**\n     *  Returns the provider object associated with this transaction.\n     *\n     *  @todo NOTE due to quirks of how we implement signing, and cloning etc, this might not be the same\n     *        provider, but instead one derieved from - the original one provided in the constructor.\n     */\n    public get provider(): Eulith.Provider {\n        return this.providerForAPIsRequiringAuthAddressField_;\n    }\n\n    private signer_?: Eulith.Signing.SigningService;\n    private logger_: Eulith.Logging.ILogger;\n\n    // Some APIs need a special URL set (include auth_address), so redirect those through this web3js instance\n    private providerForAPIsRequiringAuthAddressField_: Eulith.Provider;\n}\n"]}