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【AWS学習記録3回目】サーバーレスアーキテクチャで翻訳 Web API を構築する
概要
学習で、サーバーレスアーキテクチャで翻訳 Web API を構築するハンズオンをやってみました！
CloudFormation
AWSTemplateFormatVersion: 2010-09-09
Resources:
#======================
# RestApi
#======================
RestApi:
Type: AWS::ApiGateway::RestApi
Properties:
Name: RestApi
#======================
# Resource
#======================
Resource:
Type: AWS::ApiGateway::Resource
Properties:
ParentId: !GetAtt RestApi.RootResourceId
PathPart: translate
RestApiId: !Ref RestApi
#======================
# Method
#======================
Method:
Type: AWS::ApiGateway::Method
Properties:
AuthorizationType: NONE
HttpMethod: GET
Integration:
IntegrationHttpMethod: POST
Type: AWS_PROXY
Uri: !Sub arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${Function.Arn}/invocations
RequestParameters:
integration.request.querystring.input_text: method.request.querystring.input_text
RequestParameters:
method.request.querystring.input_text: true
ResourceId: !Ref Resource
RestApiId: !Ref RestApi
#======================
# Permission
#======================
Permission:
Type: AWS::Lambda::Permission
Properties:
Action: lambda:InvokeFunction
FunctionName: !Ref Function
Principal: apigateway.amazonaws.com
#======================
# Stage
#======================
Stage:
Type: AWS::ApiGateway::Stage
Properties:
DeploymentId: !Ref Deployment
MethodSettings:
- HttpMethod: GET
ResourcePath: /translate
RestApiId: !Ref RestApi
#======================
# Deployment
#======================
Deployment:
DependsOn: Method
Type: AWS::ApiGateway::Deployment
Properties:
RestApiId: !Ref RestApi
#======================
# Function
#======================
Function:
Type: AWS::Lambda::Function
Properties:
Role: !GetAtt Role.Arn
Runtime: python3.12
FunctionName: Function
Handler: index.lambda_handler
Code:
ZipFile: !Sub |
import json
import boto3
import datetime
translate = boto3.client('translate')
dynamodb_translate_history_tbl = boto3.resource('dynamodb').Table('translate-history')
def lambda_handler(event, context):
input_text = event['queryStringParameters']['input_text']
response = translate.translate_text(
Text=input_text,
SourceLanguageCode='ja',
TargetLanguageCode='en',
)
output_text = response.get('TranslatedText')
dynamodb_translate_history_tbl.put_item(
Item={
'timestamp': datetime.datetime.now().strftime("%Y%m%d%H%M%S"),
'input_text': input_text,
'output_text': output_text
}
)
return {
'statusCode': 200,
'body': json.dumps({
'output_text': output_text
}),
'isBase64Encoded': False,
'headers': {}
}
#======================
# Role
#======================
Role:
Type: AWS::IAM::Role
Properties:
AssumeRolePolicyDocument:
Version: "2012-10-17"
Statement:
- Effect: Allow
Principal:
Service: lambda.amazonaws.com
Action: sts:AssumeRole
ManagedPolicyArns:
- arn:aws:iam::aws:policy/TranslateFullAccess
- arn:aws:iam::aws:policy/AmazonDynamoDBFullAccess
Policies:
- PolicyName: ECSContainerInstancePermissions
PolicyDocument:
Version: "2012-10-17"
Statement:
- Effect: "Allow"
Action: "logs:CreateLogGroup"
Resource: "arn:aws:logs:ap-northeast-1:[アカウントID]:*"
- Effect: "Allow"
Action:
- "logs:CreateLogStream"
- "logs:PutLogEvents"
Resource:
- "arn:aws:logs:ap-northeast-1:[アカウントID]:log-group:/aws/lambda/translate-function:*"
#======================
# Table
#======================
Table:
Type: AWS::DynamoDB::Table
Properties:
AttributeDefinitions:
- AttributeName: timestamp
AttributeType: S
KeySchema:
- AttributeName: timestamp
KeyType: HASH
ProvisionedThroughput:
ReadCapacityUnits: 1
WriteCapacityUnits: 1
TableName: translate-history
参考文献
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