botframework-s3storage/dist/s3storage.js

This is a library to store botframework bot state to s3

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const aws_sdk_1 = require("aws-sdk");
class S3Storage {
    constructor(bucketName, options = {}) {
        this.bucketName = bucketName;
        this.s3Client = new aws_sdk_1.S3({
            ...options,
        });
    }
    async getJsonObject(key) {
        const object = await this.s3Client
            .getObject({
            Bucket: this.bucketName,
            Key: key.replace(/\/$/, ''),
        })
            .promise();
        const item = JSON.parse(object.Body.toString());
        item.eTag = object.ETag;
        return item;
    }
    async putObject(key, payload) {
        return this.s3Client
            .putObject({
            Bucket: this.bucketName,
            Key: key.replace(/\/$/, ''),
            Body: JSON.stringify(payload),
        })
            .promise();
    }
    async read(keys) {
        const data = {};
        for (let key of keys) {
            try {
                data[key] = await this.getJsonObject(key);
            }
            catch (e) {
                // console.log(e);
            }
        }
        return data;
    }
    async write(changes) {
        let oldItem;
        for (let key of Object.keys(changes)) {
            const newItem = changes[key];
            try {
                oldItem = await this.getJsonObject(key);
            }
            catch {
                oldItem = false;
            }
            if (!oldItem || newItem.eTag === '*') {
                await this.putObject(key, newItem);
            }
            else {
                if (newItem.eTag === oldItem.eTag) {
                    await this.putObject(key, newItem);
                }
                else {
                    throw new Error(`Storage: error writing "${key}" due to eTag conflict.`);
                }
            }
        }
    }
    async delete(keys) {
        for (let key of keys) {
            try {
                await this.s3Client
                    .deleteObject({
                    Bucket: this.bucketName,
                    Key: key.replace(/\/$/, ''),
                })
                    .promise();
            }
            catch (e) {
                // console.log(e);
            }
        }
    }
}
exports.default = S3Storage;