Download to read offline
![IAM
Roles = JSON
{
"Version":"2008-10-17",
"Id":"http referrer policy example",
"Statement":[
{
"Sid":"Allow get requests referred by www.mysite.com
and mysite.com",
"Effect":"Allow",
"Principal":"*",
"Action":"s3:GetObject",
"Resource":"arn:aws:s3:::example-bucket/*",
"Condition":{
"StringLike":{
"aws:Referer":[
"http://www.mysite.com/*",
"http://mysite.com/*"
]
}
}
}
]
}](https://image.slidesharecdn.com/7lsjf8enrdu9r8k4xkfu-signature-cf8b49e9871c782e3fcf1b83c14d935e350d324f5b1e9ca6c8f7457823e5822c-poli-150526190434-lva1-app6892/85/Node-without-servers-aws-lambda-36-320.jpg)
![Event body
[Event context]](https://image.slidesharecdn.com/7lsjf8enrdu9r8k4xkfu-signature-cf8b49e9871c782e3fcf1b83c14d935e350d324f5b1e9ca6c8f7457823e5822c-poli-150526190434-lva1-app6892/85/Node-without-servers-aws-lambda-44-320.jpg)
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Node without servers aws-lambda
- 1. Node Without Servers: Event-DrivenComputing with AWS Lambda Brian Klaas Johns Hopkins Bloomberg School of Public Health bklaas@jhu.edu @brian_klaas www.iterateme.com
- 2.
- 11. What is andhow does it work? What good can do for me?
- 12.
- 13.
- 14.
- 15. Full AWS LinuxAMI (ami-dfc39aef, Linux Kernel 3.14.35-28.38.amzn1.x86_64) Node v0.10.33 ImageMagick AWS JS SDK v2.1.22 Up to 1024MB RAM and 512MB of ephemeral disk storage
- 16. * * May notactually be Docker
- 17. Every event Every configchange Every code change = new ( )
- 19. Lambda = onefunction
- 20. exports.handler = function(event,context) { console.log('Hello', event); // more JS goes here context.done(null, 'Success'); }
- 21. Initialization code Handler code Codeterminates Timeout context.done context.success context.fail All callbacks finished Event Context ?
- 22. Never assume Lambdawill re–use a container.
- 23. Pricing: Charged byCompute Time Free Tier First million requests are free 400,000 GB-seconds of compute time 220 hours of free compute time per month @ 512MB of RAM Paid Tier $0.20 per 1 million requests thereafter $0.00001667 for every GB-second http://aws.amazon.com/lambda/pricing * You also have to pay for in/out data transfer fees
- 24.
- 25. Event notification Run acompute cycle Shut down
- 26. Where do eventscome from?
- 27.
- 28. S3 Fast, durable, cheapstorage Events on file put/post, copy
- 29. Many AWS services can post to SNS GitHub has a post-commit hook SNS
- 30. All SDKs support Lambda function invocation Java, Ruby, Node, Python, JavaScript, PHP, .NET, iOS, Android, and the CLI AWS SDK Custom Events
- 31.
- 32.
- 33. IAM Identity AccessManagement
- 34.
- 35.
- 36. IAM Roles = JSON { "Version":"2008-10-17", "Id":"httpreferrer policy example", "Statement":[ { "Sid":"Allow get requests referred by www.mysite.com and mysite.com", "Effect":"Allow", "Principal":"*", "Action":"s3:GetObject", "Resource":"arn:aws:s3:::example-bucket/*", "Condition":{ "StringLike":{ "aws:Referer":[ "http://www.mysite.com/*", "http://mysite.com/*" ] } } } ] }
- 37. How do weknow it’s done?
- 38. When responding toevents from within AWS, we don’t.
- 39.
- 40. Options for notifyingthat work is complete SQS SNS (http, SMS, email) DynamoDB table File updating in S3
- 41. Only one Lambdafunction per S3 bucket.
- 42.
- 43.
- 44.
- 45. Custom events aresynchronous calls Default invocation-type: RequestResponse invocation-type: Event for async events
- 46. Invoking via theCLI using ColdFusion
- 47. Invoking via theCLI aws lambda invoke --function-name myFunctionName --payload '{"key1":"value1", "key2":"value2", "key3":"value3"}' outfile.txt Name of your Lambda function Response is written to a file. This is the name of that file. JSON passed in to the Lambda function as the “event” structure. Note you can specify --payload file://input.txt to use a file instead.
- 48.
- 49.
- 50. Asynchronous task server Backgroundjob processor
- 51.
- 52. Media conversion service ImageMagick Nativemodules AWS Elastic Transcoder
- 53.
- 54.
- 55. Lambda is greatwhen every event is independent and can be processed incrementally.
- 56.
- 57. Statically compile onan Amazon Linux AMI Install the module as part of your Node app on the same AMI ZIP up the function, binary, and the node_modules folder Native Node Modules https://aws.amazon.com/blogs/compute/nodejs-packages-in-lambda/
- 58. Make sure it’scompiled for the Linux AMD64 architecture Make sure it can run standalone or is visible to /bin/bash/ or /usr/bin/python Use child_process.spawnSync() to make sure the child process finishes before context.success/done() executes Include the executable in the ZIP file you upload to Lambda Any Compiled Executable https://aws.amazon.com/blogs/compute/running-executables-in-aws-lambda/
- 59. Native Java supportannounced April 9 Java
- 60.
- 61. Code at github.com/brianklaas Sessionevaluation! Brian Klaas Johns Hopkins Bloomberg School of Public Health bklaas@jhu.edu @brian_klaas www.iterateme.com