├── LICENSE ├── README.md ├── handler.py ├── index.html ├── package.json ├── requirements.txt ├── serverless.yml └── sql.py /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. Definitions. 8 | 9 | "License" shall mean the terms and conditions for use, reproduction, 10 | and distribution as defined by Sections 1 through 9 of this document. 11 | 12 | "Licensor" shall mean the copyright owner or entity authorized by 13 | the copyright owner that is granting the License. 14 | 15 | "Legal Entity" shall mean the union of the acting entity and all 16 | other entities that control, are controlled by, or are under common 17 | control with that entity. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | 2 | # AWS Lambda to AWS RDS without VPC 3 | 4 | More info here: [https://coderecipe.ai/architectures/77374273](https://coderecipe.ai/architectures/77374273) 5 | 6 | **Problem Statement:** 7 | 8 | In the past, in order to have lambda talking to RDS one would have to introduce a VPC in between, this is problematic because: 9 | 10 | - VPC cold start time takes seconds! 11 | - Complexity of setting up and maintaining a VPC is really unnecessary 12 | - VPC is not free either! 13 | 14 | **Solution:** 15 | 16 | Using the [new Data API provided by AWS Aurora](https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/data-api.html), an AWS Lambda can directly communicate with the RDS Instance. The Lambda is then connected to an API Gateway to allow user interface. 17 | 18 | **Functional Requirements:** 19 | 20 | Be able to query an RDS instance from within a AWS Lambda function without the use of VPC. 21 | 22 | **Performance Requirements:** 23 | 24 | Avoid performance issues caused by VPC configuration. 25 | 26 | **Recipes built on top of this recipe:** 27 | 28 | [How I Build a Scalable Crypto Exchange with AWS and web3.js](https://coderecipe.ai/architectures/95580531) 29 | 30 | ### Prerequisites 31 | 32 | Make sure you have AWS access key and secrete keys setup locally, following this video [here](https://www.youtube.com/watch?v=_f0d2pLJjiA) 33 | 34 | ### Download the code locally 35 | 36 | ``` 37 | git clone https://github.com/CodeRecipe-dev/LambdaToAuroraNoVPC 38 | ``` 39 | 40 | ### Deploy to the cloud 41 | 42 | ``` 43 | cd LambdaToAuroraNoVPC 44 | 45 | npm install serverless 46 | pip install -r requirements.txt 47 | 48 | serverless deploy --stage --dbUser 49 | ``` 50 | 51 | #### Create DB - Must be done before using app 52 | 53 | ``` 54 | sls invoke -f AuroraCRUD -d '{"body":{"eventType":"createTable"}}' -l --stage --dbUser 55 | ``` 56 | 57 | #### CRUD Operations 58 | 59 | ``` 60 | sls invoke -f AuroraCRUD -d '{"body":{"eventType":"saveRecord", "recordInfo": {"record_id": 1, "data": "hello"}}}' -l --stage --dbUser 61 | sls invoke -f AuroraCRUD -d '{"body":{"eventType":"getRecords"}}' -l --stage --dbUser 62 | sls invoke -f AuroraCRUD -d '{"body":{"eventType":"updateRecord", "recordInfo": {"record_id": 1, "data": "world"}}}' -l --stage --dbUser 63 | 64 | ``` -------------------------------------------------------------------------------- /handler.py: -------------------------------------------------------------------------------- 1 | import json 2 | import os 3 | import boto3 4 | from random import * 5 | import sql 6 | 7 | def handle_aurora_crud(event, context): 8 | request_body = event['body'] 9 | event_type = request_body['eventType'] 10 | databaseName = os.environ['DatabaseName'] 11 | awsSecretStoreArn = os.environ['AwsSecretStoreArn'] 12 | dbClusterOrInstanceArn = os.environ['DbClusterArn'] 13 | 14 | if event_type == "createTable": 15 | sql.create_table(databaseName, awsSecretStoreArn, dbClusterOrInstanceArn) 16 | return {"success": True, "message": "Created Table"} 17 | 18 | if event_type == "getRecords": 19 | records = sql.get_records(databaseName, awsSecretStoreArn, dbClusterOrInstanceArn) 20 | return {"success": True, "records": records} 21 | 22 | if event_type == "saveRecord": 23 | record_info = request_body['recordInfo'] 24 | record_info['record_id'] = randint(1,10000000) 25 | sql.create_record(databaseName, awsSecretStoreArn, dbClusterOrInstanceArn, record_info) 26 | return {"success": True, "message": "Saved Record", "record": record_info} 27 | 28 | if event_type == "updateRecord": 29 | record_info = request_body['recordInfo'] 30 | sql.update_record(databaseName, awsSecretStoreArn, dbClusterOrInstanceArn, record_info) 31 | return {"success": True, "message": "Updated Record"} -------------------------------------------------------------------------------- /index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | AWS Lambda to AWS RDS without VPC 5 | 6 | 7 | 15 |

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/package.json:
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1 | {
2 |   "dependencies": {
3 |     "serverless-iam-roles-per-function": "^2.0.0",
4 |     "serverless-plugin-scripts": "^1.0.2",
5 |     "serverless-pseudo-parameters": "^2.4.0",
6 |     "serverless-python-requirements": "^4.3.0"
7 |   }
8 | }
9 | 


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/requirements.txt:
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1 | boto3==1.9.159
2 | botocore==1.12.159
3 | PyMySQL==0.9.3


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/serverless.yml:
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 1 | ##################################################################################
 2 | # CodeRecipe - a marketplace for developers to grab ready to use cloud solutions #
 3 | # More details at:                                                   #
 4 | ##################################################################################
 5 | service: CodeRecipeSample-LambdaAurora
 6 | provider:
 7 |   name: aws
 8 |   runtime: python2.7
 9 |   region: us-east-1
10 |   stage: ${opt:stage}
11 |   dbUser: ${opt:dbUser}
12 |   apiKeys:
13 |     - ${opt:stage}-lambdaAurora
14 |   usagePlan:
15 |     quota:
16 |       limit: 5000
17 |       offset: 0
18 |       period: DAY
19 |     throttle:
20 |       burstLimit: 1
21 |       rateLimit: 1
22 | 
23 | functions:
24 |   AuroraCRUD:
25 |     handler: handler.handle_aurora_crud
26 |     name: ${self:provider.stage}-AuroraCRUD
27 |     timeout: 10
28 |     environment:
29 |       Stage: ${self:provider.stage}
30 |       AwsSecretStoreArn: "#{RDSSecret}"
31 |       DatabaseName: "auroraDb"
32 |       DbClusterArn: "arn:aws:rds:${self:provider.region}:#{AWS::AccountId}:cluster:#{AuroraCrudDBCluster}"
33 |     events:
34 |       - http:
35 |           path: /db-interface
36 |           method: POST
37 |           cors: true
38 |           integration: lambda
39 |           private: true
40 |     iamRoleStatementsName: ${self:provider.stage}-AuroraCRUD-role
41 |     iamRoleStatements:
42 |       - Effect: "Allow"
43 |         Action:
44 |           - "rds-data:ExecuteStatement"
45 |         Resource: "arn:aws:rds:${self:provider.region}:#{AWS::AccountId}:cluster:#{AuroraCrudDBCluster}"
46 |       - Effect: "Allow"
47 |         Action:
48 |           - "secretsmanager:GetSecretValue"
49 |         Resource: "#{RDSSecret}"
50 | 
51 | resources:
52 |   Resources:
53 |     AuroraCrudDBCluster:
54 |       Type: AWS::RDS::DBCluster
55 |       Properties:
56 |         DBClusterIdentifier: ${self:provider.stage}-auraracruddbcluster
57 |         MasterUsername: !Join ['', ['{{resolve:secretsmanager:', !Ref RDSSecret, ':SecretString:username}}' ]]
58 |         MasterUserPassword: !Join ['', ['{{resolve:secretsmanager:', !Ref RDSSecret, ':SecretString:password}}' ]]
59 |         DatabaseName: auroraDb
60 |         Engine: aurora
61 |         EngineMode: serverless
62 |         ScalingConfiguration:
63 |           AutoPause: false
64 |           MaxCapacity: 8
65 |           MinCapacity: 2
66 |     RDSSecret:
67 |       Type: AWS::SecretsManager::Secret
68 |       Properties:
69 |         Description: 'Secret for Orders RDS'
70 |         GenerateSecretString:
71 |           SecretStringTemplate: '{"username": "${self:provider.dbUser}"}'
72 |           GenerateStringKey: 'password'
73 |           PasswordLength: 16
74 |           ExcludeCharacters: '"@/\'
75 |     SecretRDSInstanceAttachment:
76 |       Type: AWS::SecretsManager::SecretTargetAttachment
77 |       Properties:
78 |         SecretId: !Ref RDSSecret
79 |         TargetId: !Ref AuroraCrudDBCluster
80 |         TargetType: AWS::RDS::DBCluster
81 | 
82 | plugins:
83 |   - serverless-python-requirements
84 |   - serverless-pseudo-parameters
85 |   - serverless-iam-roles-per-function
86 |   - serverless-plugin-scripts
87 | 
88 | custom:
89 |   scripts:
90 |     hooks:
91 |       'deploy:finalize': 'aws rds modify-db-cluster --db-cluster-identifier ${self:provider.stage}-auraracruddbcluster --enable-http-endpoint'
92 |   pythonRequirements:
93 |     noDeploy: []
94 |     dockerizePip: false


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/sql.py:
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 1 | import json
 2 | import os
 3 | import boto3
 4 | import pymysql
 5 | 
 6 | 
 7 | def create_table(databaseName, awsSecretStoreArn, dbClusterOrInstanceArn):
 8 |     sqlStatement = 'create table records(record_id int NOT NULL, user_id int, data varchar(255), PRIMARY KEY (record_id))'
 9 |     _send_sql_to_rds(databaseName, awsSecretStoreArn, dbClusterOrInstanceArn, sqlStatement)
10 | 
11 | def create_record(databaseName, awsSecretStoreArn, dbClusterOrInstanceArn, record_info):
12 |     parameters = _get_record_id_data_parameters(record_info)
13 |     sqlStatement = "INSERT INTO records(user_id, record_id, data) VALUES (1, :record_id, :data);"
14 |     _send_sql_to_rds(databaseName, awsSecretStoreArn, dbClusterOrInstanceArn, sqlStatement, parameters)
15 | 
16 | def update_record(databaseName, awsSecretStoreArn, dbClusterOrInstanceArn, record_info):
17 |     parameters = _get_record_id_data_parameters(record_info)
18 |     sqlStatement = 'UPDATE records SET data = :data WHERE record_id = :record_id;'
19 |     _send_sql_to_rds(databaseName, awsSecretStoreArn, dbClusterOrInstanceArn, sqlStatement, parameters)
20 | 
21 | def get_records(databaseName, awsSecretStoreArn, dbClusterOrInstanceArn):
22 |     sqlStatement = 'select * from records limit 5'
23 |     response = _send_sql_to_rds(databaseName, awsSecretStoreArn, dbClusterOrInstanceArn, sqlStatement)
24 |     return response['records']
25 | 
26 | def _get_record_id_data_parameters(record_info):
27 |     record_id = {'name':'record_id', 'value':{'longValue': record_info['record_id']}}
28 |     data = {'name':'data', 'value':{'stringValue': record_info['data']}}
29 |     return [record_id, data]
30 | 
31 | def _send_sql_to_rds(databaseName, awsSecretStoreArn, dbClusterOrInstanceArn, sqlStatement, parameters=[]):
32 |     database_name = databaseName
33 |     client = boto3.client('rds-data')
34 |     response = client.execute_statement(
35 |         secretArn=awsSecretStoreArn,
36 |         resourceArn=dbClusterOrInstanceArn,
37 |         database=databaseName,
38 |         parameters=parameters,
39 |         sql=sqlStatement
40 |     )
41 |     return response


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