@fizzyflow/suisql/src/SuiSqlWalrus.ts

SuiSQL is a library and set of tools for working with decentralized SQL databases on the Sui blockchain and Walrus protocol.

// import { BlobEncoder } from '@mysten/walrus-wasm';

// import type { SuiClient } from '@mysten/sui/client';


import type { Signer } from '@mysten/sui/cryptography';

import { getFullnodeUrl } from '@mysten/sui/client';
// import { WalrusClient } from "./walrusSdk2";
// import type { WalrusClient } from '@mysten/walrus';
import SuiSqlLog from './SuiSqlLog.js';

import type { WalrusClient, RegisterBlobOptions, CertifyBlobOptions } from '@mysten/walrus';
import { Transaction } from "@mysten/sui/transactions";
import type SuiSqlBlockchain from './SuiSqlBlockchain.js';

import { blobIdIntFromBytes, blobIdToInt, blobIdFromInt } from './SuiSqlUtils.js';

import axios from 'axios';


export type SuiSqlWalrusWalrusClient = WalrusClient;

type SuiSqlWalrusParams = {
    walrusClient?: WalrusClient,
    chain?: SuiSqlBlockchain,
    currentWalletAddress?: string,
    publisherUrl?: string,
    aggregatorUrl?: string,
    signer?: Signer,
    network?: string, // sui network, 'mainnet', 'testnet', 
};


const N_SHARDS = 1000; // https://github.com/MystenLabs/ts-sdks/blob/main/packages/walrus/src/constants.ts
                       // systemObjectId -> dynamicField ( SystemStateInnerV1 ) -> fields -> committee -> n_shards

export default class SuiSqlWalrus {
    private signer?: Signer;

    private walrusClient?: WalrusClient;
    private currentWalletAddress?: string;

    private publisherUrl?: string;
    private aggregatorUrl?: string;

    private canWrite: boolean = false;
    private canRead: boolean = false;

    private chain?: SuiSqlBlockchain;

    constructor(params: SuiSqlWalrusParams) {
        this.signer = params.signer;
        this.currentWalletAddress = params.currentWalletAddress;
        this.publisherUrl = params.publisherUrl;
        this.aggregatorUrl = params.aggregatorUrl;

        this.walrusClient = params.walrusClient;
        this.chain = params.chain;

        if (!this.currentWalletAddress && this.signer) {
            this.currentWalletAddress = this.signer.toSuiAddress();
        }


        if (!this.walrusClient && params.network) {
            if (!this.aggregatorUrl) {
                // we can use aggregator
                if (params.network == 'testnet') {
                    this.aggregatorUrl = 'https://aggregator.walrus-testnet.walrus.space';
                }
            }
            if (!this.publisherUrl && this.currentWalletAddress) {
                // we can use publisher if we know current user address
                if (params.network == 'testnet') {
                    this.publisherUrl = 'https://publisher.walrus-testnet.walrus.space';
                }
            }
        }

        if (!this.publisherUrl && !this.signer && this.currentWalletAddress) {
            // we need publisher, as we can't write with walrusClient without signer
            if (params.network == 'testnet') {
                this.publisherUrl = 'https://publisher.walrus-testnet.walrus.space';
            }
        }

        this.canWrite = false;
        if (this.walrusClient) {
            this.canRead = true;
            if (this.signer) {
                this.canWrite = true;
            }
            if (this.publisherUrl && this.currentWalletAddress) {
                this.canWrite = true;
            }
        } else {
            if (this.publisherUrl && this.currentWalletAddress) {
                this.canWrite = true;
            }
            if (this.aggregatorUrl) {
                this.canRead = true;
            }
        }

        SuiSqlLog.log('SuiSqlWalrus instance', params, 'canRead:', this.canRead, 'canWrite:', this.canWrite);
    }

    async getStoragePricePerEpoch(size: number): Promise<bigint | null> {
        const BYTES_PER_UNIT_SIZE = 1024 * 1024; // 1 MiB
        const storageUnits = BigInt(Math.ceil(size / BYTES_PER_UNIT_SIZE));
        const systemState = await this.walrusClient?.systemState();

        if (systemState && systemState.storage_price_per_unit_size) {
            const storagPricePerUnitSize = BigInt(systemState.storage_price_per_unit_size);
            const periodPaymentDue = storagPricePerUnitSize * storageUnits;

            return periodPaymentDue;
        }

        return null;
    }

    async getSystemObjectId(): Promise<string | null> {
        if (!this.walrusClient) {
            return null;
        }

        const systemObject = await this.walrusClient.systemObject();
        return systemObject.id.id;
    }

    async getSystemCurrentEpoch(): Promise<number | null> {
        if (!this.walrusClient) {
            return null;
        }

        const systemState = await this.walrusClient?.systemState();
        if (systemState && systemState.committee && systemState.committee.epoch) {
            return systemState.committee.epoch;
        }

        return null;
    }

    // static async calculateBlobId(data: Uint8Array): Promise<bigint | null> {
    //     if (!this.walrusClient) {
    //         return null;
    //     }

    //     const { blobId } = await this.walrusClient.encodeBlob(data);
    //     return blobId;

    //     return null;
    // }

    async calculateBlobId(data: Uint8Array): Promise<bigint | null> {
        if (!this.walrusClient) {
            return null;
        }

        const { blobId } = await this.walrusClient.encodeBlob(data);
        
        if (blobId) {
            return blobIdToInt(blobId);
        }

        return null;
    }

    getCurrentAddress() {
        if (this.signer) {
            return this.signer.toSuiAddress();
        }
        if (this.currentWalletAddress) {
            return this.currentWalletAddress;
        }
        return null;        
    }

    async writeToPublisher(data: Uint8Array): Promise<{ blobId: bigint, blobObjectId: string } | null> {
        const form = new FormData();
        form.append('file', new Blob([data]));
        
        const publisherUrl = this.publisherUrl+'/v1/blobs?deletable=true&send_object_to='+this.getCurrentAddress();
        SuiSqlLog.log('writing blob to walrus via publisher', form);

        let res = null;
        try {
            res = await axios.put(publisherUrl, data);
        } catch (e) {
            SuiSqlLog.log('error writing to publisher', res, res?.data, (e as any)?.response?.data);
            throw e;
        }

        // SuiSqlLog.log('walrus publisher response', res);

        if (res && res.data && res.data.newlyCreated && res.data.newlyCreated.blobObject && res.data.newlyCreated.blobObject.id) {
            SuiSqlLog.log('success', res.data);
            return {
                blobId: blobIdToInt(''+res.data.newlyCreated.blobObject.blobId),
                blobObjectId: res.data.newlyCreated.blobObject.id,
            };
        }

        throw new Error('Failed to write blob to walrus publisher');
    }

    async write(data: Uint8Array): Promise<{ blobId: bigint, blobObjectId: string } | null> {
        if (this.publisherUrl && this.currentWalletAddress) {
            return await this.writeToPublisher(data);
        }
        if (!this.walrusClient || !this.signer) {
            return null;
        }

        SuiSqlLog.log('writing blob to walrus', data);

        const { blobId, blobObject } = await this.walrusClient.writeBlob({
            blob: data,
            deletable: true,
            epochs: 2,
            signer: this.signer,
            owner: this.signer.toSuiAddress(),
            attributes: undefined,
        });

        const blobObjectId = blobObject.id.id;
        const blobIdAsInt = blobIdToInt(blobId);

        SuiSqlLog.log('walrus write success', blobIdAsInt, blobObjectId);

        return { blobId: blobIdAsInt, blobObjectId };
    }

    async write2(data: Uint8Array):  Promise<{ blobId: bigint, blobObjectId: string } | null> {
        if (!this.walrusClient || !this.chain) {
            return null;
        }
        const owner = this.getCurrentAddress();
        if (!owner) {
            throw new Error('No owner address available');
        }

        const deletable = true;

		const { sliversByNode, blobId, metadata, rootHash } = await this.walrusClient.encodeBlob(data);


        const registerBlobTransaction = await this.registerBlobTransaction({
			size: data.byteLength,
			epochs: 2,
			blobId,
			rootHash,
			deletable,
			owner,
			attributes: undefined,
        });

        const blobObjectId = await this.chain.executeRegisterBlobTransaction(registerBlobTransaction);

        if (!blobObjectId) {
            throw new Error('Can not get blobObjectId from blob registration transaction');
        }
        // console.log(blobObjectId);

		const confirmations = await this.walrusClient.writeEncodedBlobToNodes({
			blobId,
			metadata,
			sliversByNode,
			deletable,
			objectId: blobObjectId
		});

        const certifyBlobTransaction = await this.certifyBlobTransaction({
			blobId,
			blobObjectId,
			confirmations,
			deletable,
        });

        // console.log(certifyBlobTransaction);

        const success = await this.chain.executeTx(certifyBlobTransaction);

        // console.log(success);

        if (success) {
            SuiSqlLog.log('walrus write success', blobId, blobObjectId);
            return { blobId: blobIdToInt(blobId), blobObjectId };
        }

        return null;
    }

    async readFromAggregator(blobId: string): Promise<Uint8Array | null> {
        const asString = blobIdFromInt(blobId);
        const url = this.aggregatorUrl+"/v1/blobs/" + asString;

        SuiSqlLog.log('reading blob from walrus (Aggregator)', blobId);

        const res = await axios.get(url, { responseType: 'arraybuffer' });

        return new Uint8Array(res.data);
    }

    async read(blobId: string): Promise<Uint8Array | null> {
        if (this.aggregatorUrl) {
            return await this.readFromAggregator(blobId);
        }

        const asString = blobIdFromInt(blobId);

        SuiSqlLog.log('reading blob from walrus (SDK)', blobId, asString);

        const data = await this.walrusClient?.readBlob({ blobId: asString });

        if (data) {
            SuiSqlLog.log('walrus read success', data);
            return data;
        }

        return null;
    }

    async registerBlobTransaction(options: RegisterBlobOptions): Promise<Transaction> {
        // that's all the hacks over Walrus SDK to make everything work in the browser ;(

        if (!this.walrusClient || !this.chain) {
            throw new Error('Walrus client not initialized');
        }
        const owner = this.getCurrentAddress();
        if (!owner) {
            throw new Error('No owner address available');
        }

        if (!options.owner) {
            options.owner = owner;
        }

        const storagePricePerEpoch = await this.getStoragePricePerEpoch( Math.ceil(options.size / (1024*1024)) );
        const totalPrice = BigInt(1000000000); //storagePricePerEpoch ? storagePricePerEpoch * BigInt(2)* BigInt(2) : BigInt(1000000000);

        const tx = new Transaction();
        const walCoin = await this.chain.getWalCoinForTx(tx, totalPrice);

        const composedTx =  this.walrusClient.registerBlobTransaction({ transaction: tx, walCoin, ...options });

        composedTx.transferObjects([walCoin], owner); // send the charge back

        return composedTx;
    }

    async certifyBlobTransaction(options: CertifyBlobOptions): Promise<Transaction> {
        if (!this.walrusClient) {
            throw new Error('Walrus client not initialized');
        }

        return this.walrusClient.certifyBlobTransaction(options);
    }
}