Quick look up for AWS(Continued..)

2018-04-04
#lookUp

AWS serverless

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sls config credentials --provider aws --key yourKey --secret yourSecret_Key
sls deploy --stage dev
serverless deploy funciton -f botRequest
serverless deploy

Import node modules to Lambda

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aws lambda update-function-code --function-name SendSMSFunc --zip-file fileb:///Users/Hanslen/Desktop/yelp-fusion/fusion/node/sendSMS.zip

Connect Lambda Node to API gateway

  1. Make sure the returning object is in the correct format

    Usually in this format!

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    var response = {
            'body': "correct",
            'statusCode': 200,
            "headers": { "Access-Control-Allow-Origin":'*'}
            };
    callback(null, response);

  2. How to access the arguments(GET)

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    let msg = event["queryStringParameters"]["msg"];

    You can console.log the event to figure out for the POST method!

Connect Lambda Python to API gateway

  1. Make sure returning in the correct format

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    return dict(
            statusCode=200,
            headers={
                'Content-Type': 'application/json',
                'Access-Control-Allow-Origin': '*'
            },
            body=json.dumps({'message': botmsg})
        )

  2. How to access the arguments(POST)

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    receiveData = json.loads(event["body"])
    botmsg = autoReply(receiveData["message"])

AWS S3

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aws s3 cp myvideo.mp4 s3://mybucket/

Upload file to S3

S3 CORS configuration:

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<?xml version="1.0" encoding="UTF-8"?>
<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
<CORSRule>
    <AllowedOrigin>*</AllowedOrigin>
    <AllowedMethod>GET</AllowedMethod>
    <AllowedMethod>PUT</AllowedMethod>
    <AllowedMethod>POST</AllowedMethod>
    <AllowedMethod>HEAD</AllowedMethod>
    <MaxAgeSeconds>3000</MaxAgeSeconds>
    <AllowedHeader>*</AllowedHeader>
</CORSRule>
</CORSConfiguration>

For React user, we can install 

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npm install --save aws-sdk

Code:

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var albumBucketName = 'BUCKET_NAME';
var bucketRegion = 'REGION';
var IdentityPoolId = 'IDENTITYPOOLID';      
AWS.config.update({
	region: bucketRegion,
	credentials: new AWS.CognitoIdentityCredentials({
		IdentityPoolId: IdentityPoolId
	})
});
        
var s3 = new AWS.S3({
	apiVersion: '2006-03-01',
	params: {Bucket: albumBucketName}
});
let files = document.getElementById('uploadImg').files;
if (!files.length) {
	return alert('Please choose a file to upload first.');
}
let file = files[0];
let fileName = file.name;
// let albumPhotosKey = encodeURIComponent(albumName) + '//';
let albumPhotosKey = "";
let photoKey = albumPhotosKey + fileName;
let params=  {Bucket: albumBucketName, Key: photoKey, Body: file};
s3.upload(params, function(err, data){
	console.log(err,data);
});

DynamoDB

Upload Data to the table

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aws dynamodb batch-write-item --request-items file://~/Downloads/sampledata/ProductCatalog.json

Specific json format can be checked in the file:

https://docs.aws.amazon.com/zh_cn/amazondynamodb/latest/developerguide/samples/sampledata.zip

Connect to DynamoDB with NodeJS

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var AWS = require("aws-sdk");
AWS.config.update({
  region: "us-east-1",
  endpoint: "http://dynamodb.us-east-1.amazonaws.com",
  accessKeyId:"ACCESSKEYID",
  secretAccessKey:"SECRETACCESSKEY"
});
var dynamodb = new AWS.DynamoDB();
var params = {
    TableName : "Movies",
    KeySchema: [       
        { AttributeName: "year", KeyType: "HASH"},  //Partition key
        { AttributeName: "title", KeyType: "RANGE" }  //Sort key
    ],
    AttributeDefinitions: [       
        { AttributeName: "year", AttributeType: "N" },
        { AttributeName: "title", AttributeType: "S" }
    ],
    ProvisionedThroughput: {       
        ReadCapacityUnits: 10, 
        WriteCapacityUnits: 10
    }
};
dynamodb.createTable(params, function(err, data) {
    if (err) {
        console.error("Unable to create table. Error JSON:", JSON.stringify(err, null, 2));
    } else {
        console.log("Created table. Table description JSON:", JSON.stringify(data, null, 2));
    }
});

Search for Item numbers in the table

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aws dynamodb scan --table-name TABLE_NAME --select "COUNT"

ElasticSearch with Lambda function IAM role

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{   "Version": "2012-10-17",   "Statement": [
    {
      "Sid": "",
      "Effect": "Allow",
      "Principal": "*",
      "Action": "es:*",
      "Resource": "arn:aws:es:us-east-1:ACCOUNTID:domain/myDomain/*"
    },
    {
      "Sid": "",
      "Effect": "Allow",
      "Principal": "*",
      "Action": "es:*",
      "Resource": "arn:aws:es:us-east-1:ACCOUNTID:domain/myDomain"
    }   
   ] 
}

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