Automated Resize & GreyScale Images in S3 with Lambda
export AWS_ACCESS_KEY_ID=my access key id
export AWS_SECRET_ACCESS_KEY=my secret key
export AWS_DEFAULT_REGION=region
# Change to your own unique S3 bucket name:
source_bucket=sas-image-upload-bucket
# Do not change this. Walkthrough code assumes this name
target_bucket=${source_bucket}resized
function=CreateThumbnailImage
lambda_execution_role_name=lambda-$function-execution
lambda_execution_access_policy_name=lambda-$function-execution-access
lambda_invocation_role_name=lambda-$function-invocation
lambda_invocation_access_policy_name=lambda-$function-invocation-access
log_group_name=/aws/lambda/$function
# Create S3 buckets
aws s3 mb s3://$source_bucket
aws s3 mb s3://$target_bucket
# Upload sample photo
wget -q -OHappyFace.jpg \
https://c3.staticflickr.com/7/6209/6094281702_d4ac7290d3_b.jpg
aws s3 cp HappyFace.jpg s3://$source_bucket/
# JavaScript code as listed in walkthrough
#wget -q -O $function.js \
# http://run.alestic.com/lambda/aws-examples/CreateThumbnail.js
zip -r $function.zip $function.js node_modules
# Create IAM Role
lambda_execution_role_arn=$(aws iam create-role \
--role-name "$lambda_execution_role_name" \
--assume-role-policy-document '{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "",
"Effect": "Allow",
"Principal": {
"Service": "lambda.amazonaws.com"
},
"Action": "sts:AssumeRole"
}
]
}' \
--output text \
--query 'Role.Arn'
)
echo lambda_execution_role_arn=$lambda_execution_role_arn
export AWS_SECRET_ACCESS_KEY=my secret key
export AWS_DEFAULT_REGION=region
# Change to your own unique S3 bucket name:
source_bucket=sas-image-upload-bucket
# Do not change this. Walkthrough code assumes this name
target_bucket=${source_bucket}resized
function=CreateThumbnailImage
lambda_execution_role_name=lambda-$function-execution
lambda_execution_access_policy_name=lambda-$function-execution-access
lambda_invocation_role_name=lambda-$function-invocation
lambda_invocation_access_policy_name=lambda-$function-invocation-access
log_group_name=/aws/lambda/$function
# Create S3 buckets
aws s3 mb s3://$source_bucket
aws s3 mb s3://$target_bucket
# Upload sample photo
wget -q -OHappyFace.jpg \
https://c3.staticflickr.com/7/6209/6094281702_d4ac7290d3_b.jpg
aws s3 cp HappyFace.jpg s3://$source_bucket/
# JavaScript code as listed in walkthrough
#wget -q -O $function.js \
# http://run.alestic.com/lambda/aws-examples/CreateThumbnail.js
zip -r $function.zip $function.js node_modules
# Create IAM Role
lambda_execution_role_arn=$(aws iam create-role \
--role-name "$lambda_execution_role_name" \
--assume-role-policy-document '{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "",
"Effect": "Allow",
"Principal": {
"Service": "lambda.amazonaws.com"
},
"Action": "sts:AssumeRole"
}
]
}' \
--output text \
--query 'Role.Arn'
)
echo lambda_execution_role_arn=$lambda_execution_role_arn
aws iam put-role-policy \
--role-name "$lambda_execution_role_name" \
--policy-name "$lambda_execution_access_policy_name" \
--policy-document '{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"logs:*"
],
"Resource": "arn:aws:logs:*:*:*"
},
{
"Effect": "Allow",
"Action": [
"s3:GetObject"
],
"Resource": "arn:aws:s3:::'$source_bucket'/*"
},
{
"Effect": "Allow",
"Action": [
"s3:PutObject"
],
"Resource": "arn:aws:s3:::'$target_bucket'/*"
}
]
}'
sleep 10
aws lambda create-function --function-name "$function" --zip-file "fileb://./$function.zip" --role "$lambda_execution_role_arn" --handler "$function.handler" --timeout 30 --runtime nodejs8.10
cat > $function-data.json <<EOM
{
"Records":[
{
"eventVersion":"2.0",
"eventSource":"aws:s3",
"awsRegion":"us-east-1",
"eventTime":"1970-01-01T00:00:00.000Z",
"eventName":"ObjectCreated:Put",
"userIdentity":{
"principalId":"AIDAJDPLRKLG7UEXAMPLE"
},
"requestParameters":{
"sourceIPAddress":"127.0.0.1"
},
"responseElements":{
"x-amz-request-id":"C3D13FE58DE4C810",
"x-amz-id-2":"FMyUVURIY8/IgAtTv8xRjskZQpcIZ9KG4V5Wp6S7S/JRWeUWerMUE5JgHvANOjpD"
},
"s3":{
"s3SchemaVersion":"1.0",
"configurationId":"testConfigRule",
"bucket":{
"name":"$source_bucket",
"ownerIdentity":{
"principalId":"A3NL1KOZZKExample"
},
"arn":"arn:aws:s3:::$source_bucket"
},
"object":{
"key":"HappyFace.jpg",
"size":1024,
"eTag":"d41d8cd98f00b204e9800998ecf8427e",
"versionId":"096fKKXTRTtl3on89fVO.nfljtsv6qko"
}
}
}
]
}
EOM
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