Merge pull request #117 from lafiosca/aws

Add AWS deployment support

.gitignore

@@ -31,3 +31,8 @@ node_modules
 .env.*
 .idea/
 .envrc
+
+aws/config.sh
+aws/build/
+aws/api-swagger.json
+aws/sam-output.yml

README.md

@@ -9,7 +9,7 @@ Inspired by
 [How I hacked Slack into a community platform with Typeform](https://levels.io/slack-typeform-auto-invite-sign-ups/)
 and Socket.io's Slack page.
 
-This project supports Heroku, Azure and Cloud Foundry.
+This project supports Heroku, Azure, Cloud Foundry, and Amazon Web Services (AWS).
 
 [![Deploy to Heroku](https://www.herokucdn.com/deploy/button.png)](https://heroku.com/deploy)
 [![Deploy to Azure](http://azuredeploy.net/deploybutton.png)](https://azuredeploy.net/)
@@ -67,6 +67,20 @@ You can test your token via curl:
 
 Add the application settings that are defined in the environment variables above.
 
+### Amazon Web Services (AWS)
+
+If you have an AWS account and have already installed and configured the AWS CLI tool, you can easily deploy this application to API Gateway and Lambda via CloudFormation in a few minutes.
+
+Instead of editing `config.js`, take these steps:
+
+1. Copy `aws/config.example.sh` to `aws/config.sh`
+2. Edit the values in `aws/config.sh`, which correspond to the variables described above, plus these:
+    * `StackName`: the name of the CloudFormation stack to create
+    * `S3BucketArtifacts`: the name of an existing S3 bucket you have write access to, for storing deployment artifacts
+    * `S3PrefixArtifacts`: the prefix to use within that S3 bucket for all deployment artifacts written
+3. Run `aws/deploy.sh` to create the CloudFormation stack and deploy your application, outputting the URL
+4. (Optional) For a friendlier URL, log into the AWS web console and establish a custom domain pointing to the API Gateway stage deployed in step 3.
+
 ## Run
 [Node.js](http://nodejs.org/) is required.
 

aws/api-swagger-template.json

@@ -0,0 +1,41 @@
+{
+	"swagger": "2.0",
+	"info": {
+		"version": "1.0.0",
+		"title": "%ApiTitle%"
+	},
+	"basePath": "/",
+	"schemes": ["https"],
+	"consumes": ["application/json"],
+	"produces": ["application/json"],
+	"paths": {
+		"/": {
+			"x-amazon-apigateway-any-method": {
+				"x-amazon-apigateway-integration": {
+					"uri": "arn:aws:apigateway:%Region%:lambda:path/2015-03-31/functions/arn:aws:lambda:%Region%:%AccountId%:function:${stageVariables.ExpressFunction}/invocations",
+					"passthroughBehavior": "when_no_match",
+					"httpMethod": "POST",
+					"type": "aws_proxy"
+				}
+			}
+		},
+		"/{proxy+}": {
+			"x-amazon-apigateway-any-method": {
+				"parameters": [
+					{
+						"name": "proxy",
+						"in": "path",
+						"required": true,
+						"type": "string"
+					}
+				],
+				"x-amazon-apigateway-integration": {
+					"uri": "arn:aws:apigateway:%Region%:lambda:path/2015-03-31/functions/arn:aws:lambda:%Region%:%AccountId%:function:${stageVariables.ExpressFunction}/invocations",
+					"httpMethod": "POST",
+					"type": "aws_proxy"
+				}
+			}
+		}
+	},
+	"x-amazon-apigateway-binary-media-types": ["*/*"]
+}

aws/config.example.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+StackName=SlackInviter
+
+S3BucketArtifacts=your-artifact-bucket
+S3PrefixArtifacts=cloudformation/slack-invite-automation
+
+CommunityName="Your Community Name"
+SlackUrl=yourcommunity.slack.com
+SlackToken=xoxp-xxx-xxx-xxx-xxx
+InviteToken=
+RecaptchaSiteKey=
+RecaptchaSecretKey=
+Locale=en
+

aws/deploy.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+
+# "set -e" makes it so if any step fails, the script aborts:
+set -e
+
+cd "${BASH_SOURCE%/*}"
+source ./config.sh
+
+AwsRegion=$(aws configure get region)
+AwsAccountId=$(aws sts get-caller-identity --output text --query Account)
+
+# Build Lambda package
+rm -rf build
+mkdir build
+cd ..
+cp -r app.js config.js lib locales package-lock.json package.json public routes views aws/build
+cd aws/build
+cp ../src/* .
+npm install
+npm install aws-serverless-express
+cd ..
+
+# Replace variables (Region and AccountId) in API Swagger template
+cat api-swagger-template.json | sed -e "s/%Region%/${AwsRegion}/g" | sed -e "s/%AccountId%/${AwsAccountId}/g" | sed -e "s/%ApiTitle%/${StackName}/g"> api-swagger.json
+
+# Package SAM template (loads Lambda dist zips to S3 locations)
+aws cloudformation package \
+	--template-file sam-template.json \
+	--output-template-file sam-output.yml \
+	--s3-bucket "${S3BucketArtifacts}" \
+	--s3-prefix "${S3PrefixArtifacts}"
+
+# Deploy CloudFormation stack
+aws cloudformation deploy \
+	--template-file sam-output.yml \
+	--stack-name "${StackName}" \
+	--capabilities CAPABILITY_IAM \
+	--parameter-overrides \
+	CommunityName="${CommunityName}" \
+	SlackUrl="${SlackUrl}" \
+	SlackToken="${SlackToken}" \
+	InviteToken="${InviteToken}" \
+	RecaptchaSiteKey="${RecaptchaSiteKey}" \
+	RecaptchaSecretKey="${RecaptchaSecretKey}" \
+	Locale="${Locale}"
+
+Url=$(aws cloudformation describe-stacks --stack-name ${StackName} | grep OutputValue | cut -f 4 -d'"')
+
+echo
+echo 'Deployed Slack Inviter!'
+echo
+echo "Account Id: ${AwsAccountId}"
+echo "    Region: ${AwsRegion}"
+echo "Stack Name: ${StackName}"
+echo "       URL: ${Url}"

aws/sam-template.json

@@ -0,0 +1,99 @@
+{
+	"AWSTemplateFormatVersion": "2010-09-09",
+	"Transform": "AWS::Serverless-2016-10-31",
+	"Description": "Slack Inviter",
+	"Parameters": {
+		"CommunityName": {
+			"Type": "String",
+			"Description": "Name of your Slack community (e.g., \"Example Team\")"
+		},
+		"SlackUrl": {
+			"Type": "String",
+			"Description": "URL host for your Slack community (e.g., \"exampleteam.slack.com\")"
+		},
+		"SlackToken": {
+			"Type": "String",
+			"NoEcho": true,
+			"Description": "Slack access token"
+		},
+		"InviteToken": {
+			"Type": "String",
+			"Description": "Optional invite token"
+		},
+		"RecaptchaSiteKey": {
+			"Type": "String",
+			"Description": "Optional Recaptcha site key"
+		},
+		"RecaptchaSecretKey": {
+			"Type": "String",
+			"NoEcho": true,
+			"Description": "Optional Recaptcha secret key"
+		},
+		"Locale": {
+			"Type": "String",
+			"Description": "Optional locale string (e.g., \"it\")"
+		}
+	},
+	"Resources": {
+		"SlackInviterApi": {
+			"Type": "AWS::Serverless::Api",
+			"Properties": {
+				"DefinitionUri": "api-swagger.json",
+				"StageName": "Express",
+				"Variables": {
+					"ExpressFunction": { "Ref": "ExpressFunction" }
+				}
+			}
+		},
+		"ExpressFunction": {
+			"Type": "AWS::Serverless::Function",
+			"Properties": {
+				"FunctionName": { "Fn::Sub": "${AWS::StackName}-Express" },
+				"Description": "Express API handler",
+				"CodeUri": "build/",
+				"Handler": "lambda.handler",
+				"Runtime": "nodejs8.10",
+				"MemorySize": 1024,
+				"Timeout": 10,
+				"Tracing": "Active",
+				"Policies": ["AWSXrayWriteOnlyAccess"],
+				"Environment": {
+					"Variables": {
+						"COMMUNITY_NAME": { "Ref": "CommunityName" },
+						"SLACK_URL": { "Ref": "SlackUrl" },
+						"SLACK_TOKEN": { "Ref": "SlackToken" },
+						"INVITE_TOKEN": { "Ref": "InviteToken" },
+						"RECAPTCHA_SITE": { "Ref": "RecaptchaSiteKey" },
+						"RECAPTCHA_SECRET": { "Ref": "RecaptchaSecretKey" },
+						"LOCALE": { "Ref": "Locale" }
+					}
+				},
+				"Events": {
+					"ExpressProxyApiRoot": {
+						"Type": "Api",
+						"Properties": {
+							"RestApiId": { "Ref": "SlackInviterApi" },
+							"Path": "/",
+							"Method": "ANY"
+						}
+					},
+					"ExpressProxyApiGreedy": {
+						"Type": "Api",
+						"Properties": {
+							"RestApiId": { "Ref": "SlackInviterApi" },
+							"Path": "/{proxy+}",
+							"Method": "ANY"
+						}
+					}
+				}
+			}
+		}
+	},
+	"Outputs": {
+		"Url": {
+			"Value": {
+				"Fn::Sub": "https://${SlackInviterApi}.execute-api.${AWS::Region}.amazonaws.com/${SlackInviterApi.Stage}/"
+			}
+		}
+	}
+}

aws/src/lambda.js

@@ -0,0 +1,32 @@
+'use strict';
+
+const awsServerlessExpress = require('aws-serverless-express');
+const app = require('./app');
+
+// NOTE: If you get ERR_CONTENT_DECODING_FAILED in your browser, this is likely
+// due to a compressed response (e.g. gzip) which has not been handled correctly
+// by aws-serverless-express and/or API Gateway. Add the necessary MIME types to
+// binaryMimeTypes below, then redeploy (`npm run package-deploy`)
+const binaryMimeTypes = [
+	'application/javascript',
+	'application/json',
+	'application/octet-stream',
+	'application/xml',
+	'font/eot',
+	'font/opentype',
+	'font/otf',
+	'image/jpeg',
+	'image/png',
+	'image/svg+xml',
+	'text/comma-separated-values',
+	'text/css',
+	'text/html',
+	'text/javascript',
+	'text/plain',
+	'text/text',
+	'text/xml',
+];
+
+const server = awsServerlessExpress.createServer(app, null, binaryMimeTypes);
+
+exports.handler = (event, context) => awsServerlessExpress.proxy(server, event, context);

package-lock.json

@@ -0,0 +1,1739 @@
+{
+  "name": "slack-invite-automation",
+  "version": "0.3.3",
+  "lockfileVersion": 1,
+  "requires": true,
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+}

views/index.jade

@@ -15,7 +15,7 @@ html
           h2 #{__('HEADER', community)}
         .content
           .information
-            form(method="POST", action="/invite")#join-form.form
+            form(method="POST", action="invite")#join-form.form
               input(type="email", name="email", autofocus, placeholder="#{__('ENTER_EMAIL')}")#slack-email.field
               if tokenRequired
                 input(type="text", name="token", placeholder="#{__('ENTER_TOKEN')}")#slack-token.field