feat(dynamodb): add dynamodb storage adapter

packages/dynamodb/LICENSE

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+MIT License
+
+Copyright (c) 2023 Manuel Tarouca
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

packages/dynamodb/README.md

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+# DynamoDB storage adapter for grammY
+
+Storage adapter that can be used to [store your session data](https://grammy.dev/plugins/session.html) with [AWS DynamoDB](https://aws.amazon.com/dynamodb/) when using sessions.
+
+## Installation
+
+```bash
+npm install @grammyjs/storage-dynamodb --save
+```
+
+## Usage
+
+You can check the [examples](https://github.com/grammyjs/storages/tree/main/packages/dynamodb/examples) folder, or simply use followed code:
+
+Create a DynamoDB table using [Terraform](https://github.com/hashicorp/terraform):
+
+```hcl
+resource "aws_dynamodb_table" "test_table" {
+  name         = "grammy_test_table"
+  hash_key     = "id"
+  billing_mode = "PAY_PER_REQUEST"
+  attribute {
+    name = "id"
+    type = "S"
+  }
+}
+```
+> The `id` hash key is required for this adapter to work.
+>
+> AWS credentials are needed in order to deploy the previous resource.
+> It is recommended to store Terraform state in a remote backend.
+
+Deploy resource:
+
+```bash
+terraform init
+terraform plan
+terraform apply
+```
+
+Create bot and pass adapter as storage:
+
+```ts
+import { Bot, Context, session, SessionFlavor } from "grammy";
+import { DynamoDBAdapter } from "@grammyjs/storage-dynamodb";
+import { DynamoDBClient } from "@aws-sdk/client-dynamodb";
+
+
+interface SessionData {
+  counter: number;
+}
+type MyContext = Context & SessionFlavor<SessionData>;
+
+const client = new DynamoDBClient();
+
+async function bootstrap() {
+  const bot = new Bot<MyContext>("");
+  bot.use(
+    session({
+      initial: () => ({ counter: 0 }),
+      storage: new DynamoDBAdapter<SessionData>({
+        tableName: "grammy_test_table",
+        dynamoDbClient: client
+      }),
+    })
+  );
+
+  bot.command("stats", (ctx) =>
+    ctx.reply(`Already got ${ctx.session.counter} photos!`)
+  );
+  bot.on(":photo", (ctx) => ctx.session.counter++);
+
+  bot.start();
+}
+
+bootstrap();
+```

packages/dynamodb/__tests__/dynamodb-test.ts

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+import { session } from 'grammy';
+import { DynamoDBAdapter } from '../src';
+import { test, expect, describe, beforeEach } from 'vitest';
+import { createBot, createMessage } from '@grammyjs/storage-utils';
+import { DynamoDBClient, GetItemCommand } from '@aws-sdk/client-dynamodb';
+import dynamodb from './helpers/dynamodb';
+import { mockClient } from 'aws-sdk-client-mock';
+
+describe('Pizza counter test', () => {
+  const ddbMock = mockClient(DynamoDBClient);
+
+  beforeEach(() => {
+    ddbMock.reset();
+  });
+
+  const adapter = new DynamoDBAdapter({
+    tableName: 'grammy_test_table',
+    dynamoDbClient: dynamodb,
+  });
+
+  test('Pizza counter should be equals 0 on initial', async () => {
+    const bot = createBot();
+    const firstMessage = createMessage(bot);
+
+    ddbMock.resolves({});
+
+    bot.use(
+      session<any, any>({
+        initial: () => ({ pizzaCount: 0 }),
+        storage: adapter,
+      }),
+    );
+    bot.on('msg:text', (ctx) => {
+      expect(ctx.session.pizzaCount).toEqual(0);
+    });
+
+    await bot.handleUpdate(firstMessage.update);
+  });
+
+  test('Pizza counter should be equals 1 after first message', async () => {
+    const bot = createBot();
+
+    bot.use(
+      session<any, any>({
+        initial: () => ({ pizzaCount: 0 }),
+        storage: new DynamoDBAdapter({
+          tableName: 'grammy_test_table',
+          dynamoDbClient: dynamodb,
+        }),
+      })
+    );
+    bot.hears('first', (ctx) => {
+      ctx.session.pizzaCount = Number(ctx.session.pizzaCount) + 1;
+    });
+
+    bot.hears('second', (ctx) => {
+      expect(ctx.session.pizzaCount).toEqual(1);
+      ctx.session.pizzaCount = Number(ctx.session.pizzaCount) + 1;
+    });
+
+    const firstMessage = createMessage(bot, 'first');
+    const secondMessage = createMessage(bot, 'second');
+
+    ddbMock.resolves({}).on(GetItemCommand)
+      .resolvesOnce({ Item: { id: { S: '1' }, Value: { S: '{"pizzaCount":0}' } } })
+      .resolvesOnce({ Item: { id: { S: '1' }, Value: { S: '{"pizzaCount":1}' } } });
+
+    await bot.handleUpdate(firstMessage.update);
+    await bot.handleUpdate(secondMessage.update);
+  });
+});

packages/dynamodb/__tests__/helpers/dynamodb.ts

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+import { DynamoDBClient } from '@aws-sdk/client-dynamodb';
+
+const dynamodb = new DynamoDBClient();
+export default dynamodb;

packages/dynamodb/examples/node.ts

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+import { Bot, Context, session, SessionFlavor } from "grammy";
+import { DynamoDBAdapter } from "@grammyjs/storage-dynamodb";
+import { DynamoDBClient } from "@aws-sdk/client-dynamodb";
+
+
+interface SessionData {
+  counter: number;
+}
+type MyContext = Context & SessionFlavor<SessionData>;
+
+const client = new DynamoDBClient();
+
+async function bootstrap() {
+  const bot = new Bot<MyContext>("");
+  bot.use(
+    session({
+      initial: () => ({ counter: 0 }),
+      storage: new DynamoDBAdapter<SessionData>({
+        tableName: "grammy_test_table",
+        dynamoDbClient: client
+      }),
+    })
+  );
+
+  bot.command("stats", (ctx) =>
+    ctx.reply(`Already got ${ctx.session.counter} photos!`)
+  );
+  bot.on(":photo", (ctx) => ctx.session.counter++);
+
+  bot.start();
+}
+
+bootstrap();

packages/dynamodb/package.json

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+{
+  "name": "@grammyjs/storage-dynamodb",
+  "version": "2.4.0",
+  "description": "AWS DynamoDB storage adapter for grammY",
+  "types": "dist/index.d.ts",
+  "files": [
+    "README.md",
+    "dist",
+    "package.json",
+    "LICENSE"
+  ],
+  "scripts": {
+    "test:deno": "echo \"Error: no tests found\"",
+    "test": "vitest",
+    "start": "node dist/index.js",
+    "dev": "nodemon",
+    "debug": "node --inspect=0.0.0.0:9229 --nolazy ./dist/index.js",
+    "prebuild": "rimraf dist",
+    "build": "tsc -p tsconfig.build.json",
+    "changelog": "conventional-changelog -p angular -i CHANGELOG.md -s --commit-path ."
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/grammyjs/storages.git"
+  },
+  "author": "mt <manue+git@matm.xyz>",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/grammyjs/storages/issues"
+  },
+  "homepage": "https://github.com/grammyjs/storages#readme",
+  "keywords": [
+    "grammy",
+    "telegram",
+    "bot",
+    "session",
+    "storage",
+    "adapter",
+    "middleware",
+    "aws",
+    "dynamodb"
+  ],
+  "devDependencies": {
+    "@aws-sdk/client-dynamodb": "^3.433.0",
+    "@grammyjs/storage-utils": "^2.4.0",
+    "aws-sdk-client-mock": "^3.0.0",
+    "grammy": "^1.19.2",
+    "vite": "^4.5.0",
+    "vitest": "^0.34.6"
+  }
+}

packages/dynamodb/src/index.ts

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+import { StorageAdapter } from 'grammy';
+import { DynamoDBClient, PutItemCommand, GetItemCommand, DeleteItemCommand } from '@aws-sdk/client-dynamodb';
+
+export interface DynamoDBAdapterOptions {
+  tableName: string;
+  dynamoDbClient: DynamoDBClient
+}
+
+export class DynamoDBAdapter<T> implements StorageAdapter<T> {
+  private client: DynamoDBClient;
+  private tableName: string;
+
+  constructor(options: DynamoDBAdapterOptions) {
+    this.client = options.dynamoDbClient;
+    this.tableName = options.tableName;
+  }
+
+  async read(key: string) {
+    const getItemCommand = new GetItemCommand({
+      TableName: this.tableName,
+      Key: {
+        id: { S: key },
+      },
+    });
+
+    try {
+      const response = await this.client.send(getItemCommand);
+      const item = response.Item;
+      if (item) {
+        return JSON.parse(item.Value.S) as T;
+      }
+    } catch (error) {
+      console.error('Error reading item from DynamoDB:', error);
+    }
+  }
+
+  async write(key: string, data: T) {
+    const putItemCommand = new PutItemCommand({
+      TableName: this.tableName,
+      Item: {
+        id: { S: key },
+        Value: { S: JSON.stringify(data) },
+      },
+    });
+
+    try {
+      await this.client.send(putItemCommand);
+    } catch (error) {
+      console.error('Error writing item to DynamoDB:', error);
+    }
+  }
+
+  async delete(key: string) {
+    const deleteItemCommand = new DeleteItemCommand({
+      TableName: this.tableName,
+      Key: {
+        id: { S: key },
+      },
+    });
+
+    try {
+      await this.client.send(deleteItemCommand);
+    } catch (error) {
+      console.error('Error deleting item from DynamoDB:', error);
+    }
+  }
+}

packages/dynamodb/tsconfig.build.json

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+{
+  "extends": "./tsconfig.json",
+  "include": [
+    "src"
+  ]
+}

packages/dynamodb/tsconfig.json

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+{
+  "compilerOptions": {
+    "moduleResolution": "node",
+    "target": "ES2019",
+    "lib": [
+      "ES2019"
+    ],
+    "module": "CommonJS",
+    "declaration": true,
+    "outDir": "./dist",
+    "strict": false,
+    "esModuleInterop": true,
+    "inlineSourceMap": true,
+    "skipLibCheck": true,
+  },
+  "include": [
+    "src",
+    "__tests__",
+    "examples"
+  ],
+  "exclude": [
+    "node_modules"
+  ]
+}

packages/dynamodb/vitest.config.ts

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+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    include: ['__tests__/*.ts'],
+    exclude: ['__tests__/helpers'],
+    watch: false,
+    threads: false,
+  },
+});