Created
April 30, 2018 22:08
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Upload an object to an S3 bucket, triggering a Lambda event, returning the object key as a Stack Output.
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Description: Upload an object to an S3 bucket, triggering a Lambda event, returning the object key as a Stack Output. | |
Parameters: | |
Key: | |
Description: S3 Object key | |
Type: String | |
Default: test | |
Body: | |
Description: S3 Object body content | |
Type: String | |
Default: TEST CONTENT | |
BucketName: | |
Description: S3 Bucket name (must already exist) | |
Type: String | |
Resources: | |
BucketConfiguration: | |
Type: Custom::S3BucketConfiguration | |
DependsOn: | |
- BucketPermission | |
- NotificationBucketPolicy | |
Properties: | |
ServiceToken: !GetAtt S3BucketConfiguration.Arn | |
Bucket: !Ref BucketName | |
NotificationConfiguration: | |
LambdaFunctionConfigurations: | |
- Events: ['s3:ObjectCreated:*'] | |
LambdaFunctionArn: !GetAtt BucketWatcher.Arn | |
S3BucketConfiguration: | |
Type: AWS::Lambda::Function | |
Properties: | |
Description: S3 Object Custom Resource | |
Handler: index.handler | |
Role: !GetAtt LambdaExecutionRole.Arn | |
Code: | |
ZipFile: !Sub | | |
var response = require('cfn-response'); | |
var AWS = require('aws-sdk'); | |
var s3 = new AWS.S3(); | |
exports.handler = function(event, context) { | |
var respond = (e) => response.send(event, context, e ? response.FAILED : response.SUCCESS, e ? e : {}); | |
process.on('uncaughtException', e=>failed(e)); | |
var params = event.ResourceProperties; | |
delete params.ServiceToken; | |
if (event.RequestType === 'Delete') { | |
params.NotificationConfiguration = {}; | |
s3.putBucketNotificationConfiguration(params).promise() | |
.then((data)=>respond()) | |
.catch((e)=>respond()); | |
} else { | |
s3.putBucketNotificationConfiguration(params).promise() | |
.then((data)=>respond()) | |
.catch((e)=>respond(e)); | |
} | |
}; | |
Timeout: 30 | |
Runtime: nodejs4.3 | |
BucketPermission: | |
Type: AWS::Lambda::Permission | |
Properties: | |
Action: 'lambda:InvokeFunction' | |
FunctionName: !Ref BucketWatcher | |
Principal: s3.amazonaws.com | |
SourceAccount: !Ref "AWS::AccountId" | |
SourceArn: !Sub "arn:aws:s3:::${BucketName}" | |
BucketWatcher: | |
Type: AWS::Lambda::Function | |
Properties: | |
Description: Sends a Wait Condition signal to Handle when invoked | |
Handler: index.handler | |
Role: !GetAtt LambdaExecutionRole.Arn | |
Code: | |
ZipFile: !Sub | | |
exports.handler = function(event, context) { | |
console.log("Request received:\n", JSON.stringify(event)); | |
var responseBody = JSON.stringify({ | |
"Status" : "SUCCESS", | |
"UniqueId" : "Key", | |
"Data" : event.Records[0].s3.object.key, | |
"Reason" : "" | |
}); | |
var https = require("https"); | |
var url = require("url"); | |
var parsedUrl = url.parse('${Handle}'); | |
var options = { | |
hostname: parsedUrl.hostname, | |
port: 443, | |
path: parsedUrl.path, | |
method: "PUT", | |
headers: { | |
"content-type": "", | |
"content-length": responseBody.length | |
} | |
}; | |
var request = https.request(options, function(response) { | |
console.log("Status code: " + response.statusCode); | |
console.log("Status message: " + response.statusMessage); | |
context.done(); | |
}); | |
request.on("error", function(error) { | |
console.log("send(..) failed executing https.request(..): " + error); | |
context.done(); | |
}); | |
request.write(responseBody); | |
request.end(); | |
}; | |
Timeout: 30 | |
Runtime: nodejs4.3 | |
Handle: | |
Type: AWS::CloudFormation::WaitConditionHandle | |
Wait: | |
Type: AWS::CloudFormation::WaitCondition | |
Properties: | |
Handle: !Ref Handle | |
Timeout: 300 | |
S3Object: | |
Type: Custom::S3Object | |
DependsOn: BucketConfiguration | |
Properties: | |
ServiceToken: !GetAtt S3ObjectFunction.Arn | |
Bucket: !Ref BucketName | |
Key: !Ref Key | |
Body: !Ref Body | |
S3ObjectFunction: | |
Type: AWS::Lambda::Function | |
Properties: | |
Description: S3 Object Custom Resource | |
Handler: index.handler | |
Role: !GetAtt LambdaExecutionRole.Arn | |
Code: | |
ZipFile: !Sub | | |
var response = require('cfn-response'); | |
var AWS = require('aws-sdk'); | |
var s3 = new AWS.S3(); | |
exports.handler = function(event, context) { | |
var respond = (e) => response.send(event, context, e ? response.FAILED : response.SUCCESS, e ? e : {}); | |
var params = event.ResourceProperties; | |
delete params.ServiceToken; | |
if (event.RequestType == 'Create' || event.RequestType == 'Update') { | |
s3.putObject(params).promise() | |
.then((data)=>respond()) | |
.catch((e)=>respond(e)); | |
} else if (event.RequestType == 'Delete') { | |
delete params.Body; | |
s3.deleteObject(params).promise() | |
.then((data)=>respond()) | |
.catch((e)=>respond(e)); | |
} else { | |
respond({Error: 'Invalid request type'}); | |
} | |
}; | |
Timeout: 30 | |
Runtime: nodejs4.3 | |
LambdaExecutionRole: | |
Type: AWS::IAM::Role | |
Properties: | |
AssumeRolePolicyDocument: | |
Version: '2012-10-17' | |
Statement: | |
- Effect: Allow | |
Principal: {Service: [lambda.amazonaws.com]} | |
Action: ['sts:AssumeRole'] | |
Path: / | |
ManagedPolicyArns: | |
- "arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole" | |
Policies: | |
- PolicyName: S3Policy | |
PolicyDocument: | |
Version: '2012-10-17' | |
Statement: | |
- Effect: Allow | |
Action: | |
- 's3:PutObject' | |
- 'S3:DeleteObject' | |
Resource: !Sub "arn:aws:s3:::${BucketName}/${Key}" | |
NotificationBucketPolicy: | |
Type: AWS::S3::BucketPolicy | |
Properties: | |
Bucket: !Ref BucketName | |
PolicyDocument: | |
Statement: | |
- Effect: "Allow" | |
Action: | |
- 's3:PutBucketNotification' | |
Resource: !Sub "arn:aws:s3:::${BucketName}" | |
Principal: | |
AWS: !GetAtt LambdaExecutionRole.Arn | |
Outputs: | |
Result: | |
Value: !GetAtt Wait.Data |
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