initial checkin, backend code finished

.babelrc

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+{
+  "plugins": ["source-map-support", "transform-runtime"],
+  "presets": [
+    ["env", { "node": "8.10" }],
+    "stage-3"
+  ]
+}
+

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules
+jspm_packages
+
+# Optional npm cache directory
+.npm
+
+# Optional REPL history
+.node_repl_history
+
+# vim
+.*.sw*
+Session.vim
+
+# Serverless
+.webpack
+.serverless
+
+# env
+env.yml
+.env
+
+# Jetbrains IDEs
+.idea

LICENSE

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+MIT License
+
+Copyright (c) 2017 Anomaly Innovations
+
+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.

README.md

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+# Serverless Node.js Starter
+
+A Serverless starter that adds ES7 syntax, serverless-offline, environment variables, and unit test support. Part of the [Serverless Stack](http://serverless-stack.com) guide.
+
+[Serverless Node.js Starter](https://github.com/AnomalyInnovations/serverless-nodejs-starter) uses the [serverless-webpack](https://github.com/serverless-heaven/serverless-webpack) plugin, [Babel](https://babeljs.io), [serverless-offline](https://github.com/dherault/serverless-offline), and [Jest](https://facebook.github.io/jest/). It supports:
+
+- **ES7 syntax in your handler functions**
+  - Use `import` and `export`
+- **Package your functions using Webpack**
+- **Run API Gateway locally**
+  - Use `serverless offline start`
+- **Support for unit tests**
+  - Run `npm test` to run your tests
+- **Sourcemaps for proper error messages**
+  - Error message show the correct line numbers
+  - Works in production with CloudWatch
+- **Automatic support for multiple handler files**
+  - No need to add a new entry to your `webpack.config.js`
+- **Add environment variables for your stages**
+
+---
+
+### Demo
+
+A demo version of this service is hosted on AWS - [`https://z6pv80ao4l.execute-api.us-east-1.amazonaws.com/dev/hello`](https://z6pv80ao4l.execute-api.us-east-1.amazonaws.com/dev/hello)
+
+And here is the ES7 source behind it
+
+``` javascript
+export const hello = async (event, context, callback) => {
+  const response = {
+    statusCode: 200,
+    body: JSON.stringify({
+      message: `Go Serverless v1.0! ${(await message({ time: 1, copy: 'Your function executed successfully!'}))}`,
+      input: event,
+    }),
+  };
+
+  callback(null, response);
+};
+
+const message = ({ time, ...rest }) => new Promise((resolve, reject) => 
+  setTimeout(() => {
+    resolve(`${rest.copy} (with a delay)`);
+  }, time * 1000)
+);
+```
+
+### Requirements
+
+- [Install the Serverless Framework](https://serverless.com/framework/docs/providers/aws/guide/installation/)
+- [Configure your AWS CLI](https://serverless.com/framework/docs/providers/aws/guide/credentials/)
+
+### Installation
+
+To create a new Serverless project.
+
+``` bash
+$ serverless install --url https://github.com/AnomalyInnovations/serverless-nodejs-starter --name my-project
+```
+
+Enter the new directory
+
+``` bash
+$ cd my-project
+```
+
+Install the Node.js packages
+
+``` bash
+$ npm install
+```
+
+### Usage
+
+To run unit tests on your local
+
+``` bash
+$ npm test
+```
+
+To run a function on your local
+
+``` bash
+$ serverless invoke local --function hello
+```
+
+To simulate API Gateway locally using [serverless-offline](https://github.com/dherault/serverless-offline)
+
+``` bash
+$ serverless offline start
+```
+
+Run your tests
+
+``` bash
+$ npm test
+```
+
+We use Jest to run our tests. You can read more about setting up your tests [here](https://facebook.github.io/jest/docs/en/getting-started.html#content).
+
+Deploy your project
+
+``` bash
+$ serverless deploy
+```
+
+Deploy a single function
+
+``` bash
+$ serverless deploy function --function hello
+```
+
+To add another function as a new file to your project, simply add the new file and add the reference to `serverless.yml`. The `webpack.config.js` automatically handles functions in different files.
+
+To add environment variables to your project
+
+1. Rename `env.example` to `env.yml`.
+2. Add environment variables for the various stages to `env.yml`.
+3. Uncomment `environment: ${file(env.yml):${self:provider.stage}}` in the `serverless.yml`.
+4. Make sure to not commit your `env.yml`.
+
+### Support
+
+- Send us an [email](mailto:[email protected]) if you have any questions
+- Open a [new issue](https://github.com/AnomalyInnovations/serverless-nodejs-starter/issues/new) if you've found a bug or have some suggestions.
+- Or submit a pull request!
+
+### Maintainers
+
+Serverless Node.js Starter is maintained by Frank Wang ([@fanjiewang](https://twitter.com/fanjiewang)) & Jay V ([@jayair](https://twitter.com/jayair)). [**Subscribe to our newsletter**](http://eepurl.com/cEaBlf) for updates. Send us an [email](mailto:[email protected]) if you have any questions.

create.js

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+import uuid from 'uuid';
+import AWS from 'aws-sdk';
+
+import * as dynamoDbLib from './libs/dynamodb-libs';
+import { success, failure } from './libs/response-lib';
+
+AWS.config.update({ region: "us-west-2" });
+
+export async function main(event, context) {
+    const data = JSON.parse(event.body);
+    const params = {
+        TableName: "notes",
+        Item: {
+            userId: event.requestContext.identity.cognitoIdentityId,
+            noteId: uuid.v1(),
+            content: data.content,
+            attachment: data.attachment,
+            createdAt: Date.now()
+        }
+    };
+
+    try {
+        await dynamoDbLib.call("put", params);
+        return success(params.Item);
+    } catch (e) {
+        console.log(e);
+        return failure({ status: false });
+    }
+}

delete.js

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+import * as dynamoDbLib from './libs/dynamodb-libs';
+import { success, failure } from './libs/response-lib';
+
+export async function main(event, context) {
+    const params = {
+        TableName: "notes",
+        Key: {
+            userId: event.requestContext.identity.cognitoIdentityId,
+            noteId: event.pathParameters.id
+        }
+    };
+
+    try {
+        const result = await dynamoDbLib.call("delete", params);
+        return success({ status: true });
+    } catch (e) {
+        return failure({ status: false })
+    }
+}

env.example

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+# HOW TO USE:
+#
+# 1 Add environment variables for the various stages here
+# 2 Rename this file to env.yml and uncomment it's usage
+#   in the serverless.yml.
+# 3 Make sure to not commit this file.
+
+dev:
+  APP_NAME: serverless-nodejs-starter
+
+prod:
+  APP_NAME: serverless-nodejs

get.js

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+import * as dynamoDbLib from './libs/dynamodb-libs';
+import { success, failure } from './libs/response-lib';
+
+export async function main(event, context) {
+    const params = {
+        TableName: "notes",
+        Key: {
+            userId: event.requestContext.identity.cognitoIdentityId,
+            noteId: event.pathParameters.id
+        }
+    };
+
+    try {
+        const result = await dynamoDbLib.call("get", params);
+        if(result.Item) {
+            return success(result.Item)
+        } else {
+            return failure({ status: false, error: "Item not found."})
+        }
+    } catch (e) {
+        return failure({ status: false })
+    }
+}

handler.js

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+export const hello = async (event, context, callback) => {
+  const response = {
+    statusCode: 200,
+    body: JSON.stringify({
+      message: `Go Serverless v1.0! ${(await message({ time: 1, copy: 'Your function executed successfully!'}))}`,
+    }),
+  };
+
+  callback(null, response);
+};
+
+const message = ({ time, ...rest }) => new Promise((resolve, reject) => 
+  setTimeout(() => {
+    resolve(`${rest.copy} (with a delay)`);
+  }, time * 1000)
+);

libs/dynamodb-libs.js

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+import AWS from 'aws-sdk';
+
+export function call(action, params) {
+    const dynamoDb = new AWS.DynamoDB.DocumentClient();
+
+    return dynamoDb[action](params).promise();
+}

libs/response-lib.js

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+export function success(body) {
+    return buildResponse(200, body);
+}
+
+export function failure(body) {
+    return buildResponse(500, body);
+}
+
+function buildResponse(statusCode, body) {
+    return {
+        statusCode: statusCode,
+        headers: {
+            "Access-Control-Allow-Origin": "*",
+            "Access-Control-Allow-Credentials": true
+        },
+        body: JSON.stringify(body)
+    }
+}

list.js

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+import * as dynamoDbLib from './libs/dynamodb-libs';
+import { success, failure } from './libs/response-lib';
+
+export async function main(event, context) {
+    const params = {
+        TableName: "notes",
+        KeyConditionExpression: "userId = :userId",
+        ExpressionAttributeValues: {
+            ":userId": event.requestContext.identity.cognitoIdentityId
+        }
+    }
+
+    try {
+        const result = await dynamoDbLib.call("query", params);
+        return success(result.Items);
+    } catch (e) {
+        return failure({ status: false })
+    }
+}

mocks/create-event.json

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+{
+    "body": "{\"content\":\"hello world\",\"attachment\":\"hello.jpg\"}",
+    "requestContext": {
+      "identity": {
+        "cognitoIdentityId": "USER-SUB-1234"
+      }
+    }
+  }

mocks/delete-event.json

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+{
+    "pathParameters": {
+        "id": "89e74e50-df08-11e8-8e64-a921e1cdd133"
+    },
+    "requestContext": {
+        "identity": {
+            "cognitoIdentityId": "USER-SUB-1234"
+        }
+    }
+}