evm-watcher/dist/data-models/history.js

Fault tolerant event watcher for topics on the ethereum virtual machine.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getDiskClient = exports.getS3Client = void 0;
const tslib_1 = require("tslib");
const s3_1 = require("../data-access/s3");
const disk_1 = require("../data-access/disk");
/**
 *
 */
let STATE;
/**
 *
 * @param {string} address
 * @param {string} newHistory
 * @return {whocares}
 */
function appendHistory(address, newHistory) {
    return tslib_1.__awaiter(this, void 0, void 0, function* () {
        const newLines = newHistory
            .map((h) => `${h.mode};${h.tx};${h.amount};${h.address}`)
            .join("\n");
        yield STATE.appendObject(`history/${address}`, newLines + "\n");
    });
}
/**
 *
 * @param {whocares} address
 * @param {whocares} history
 * @return {whocares}
 */
function writeHistory(address, history) {
    return tslib_1.__awaiter(this, void 0, void 0, function* () {
        return yield STATE.putObject(`history/${address}`, JSON.stringify(history, null, 2));
    });
}
/**
 *
 * @param {string} key
 * @return {HistoryObject}
 */
function getHistory(key) {
    return tslib_1.__awaiter(this, void 0, void 0, function* () {
        try {
            const str = yield STATE.getObject(`history/${key}`);
            return JSON.parse(str);
        }
        catch (e) {
            // TODO, json parse err should fail diff.
            console.log("NO history yet, defaulting to empty array.");
            return [];
        }
    });
}
/**
 *
 */
function getLatestBlock() {
    return tslib_1.__awaiter(this, void 0, void 0, function* () {
        try {
            const str = yield STATE.getObject("LAST_BLOCK");
            return Number(str);
        }
        catch (e) {
            return 0;
        }
    });
}
/**
 *
 * @param {string} block
 * @return  {void}
 */
function setLastBlock(block) {
    return tslib_1.__awaiter(this, void 0, void 0, function* () {
        try {
            yield STATE.putObject("LAST_BLOCK", block);
        }
        catch (e) {
            console.error("There was a problem setting last block");
            throw new Error("Unable to set block.");
        }
    });
}
/**
 *
 * @param {string} bucket
 * @return {string}
 */
function getS3Client({ bucket } = {}) {
    if (!bucket)
        throw Error("PARAM ERROR. Missing bucket name.");
    STATE = new s3_1.S3({ Bucket: bucket });
    return {
        appendHistory,
        writeHistory,
        getHistory,
        getLatestBlock,
        setLastBlock,
    };
}
exports.getS3Client = getS3Client;
/**
 *
 * @param {string} basePath
 * @return {string}
 */
function getDiskClient({ basePath }) {
    STATE = new disk_1.Disk({ basePath });
    return {
        appendHistory,
        writeHistory,
        getHistory,
        getLatestBlock,
        setLastBlock,
    };
}
exports.getDiskClient = getDiskClient;