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Serverless Architecture for Powerful Data Pipelines Jason A Myers

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Credit: Horst Felske and Fritz Schiemann ex-convex.org

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Issues — Scheduled — Complex — Scaling — Recovery

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Credit: Anonymous

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Python Toolkits and Services — Luigi — Airflow — AWS Data Pipeline

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SERVERLESS

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Cloud Functions

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Simple Pipeline overview

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Simple Pipeline overview

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Simple Pipeline overview

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Simple Pipeline overview

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Simple Pipeline overview

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Serverless Python Tools — Zappa — Apex — Chalice — Serverless

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Apex — Multiple Environment Support — Function Deployment — Infrastructure as code via Terraform

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Project Structure !"" functions # $"" listener # $"" main.py !"" infrastructure # !"" dev # # !"" main.tf # # !"" outputs.tf # # $"" variables.tf # !"" prod # # !"" main.tf # # !"" outputs.tf # # $"" variables.tf !"" project.json $"" project.prod.json

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Project Structure !"" functions # $"" listener # $"" main.py !"" infrastructure # !"" dev # # !"" main.tf # # !"" outputs.tf # # $"" variables.tf # !"" prod # # !"" main.tf # # !"" outputs.tf # # $"" variables.tf !"" project.json $"" project.prod.json

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Project Structure !"" functions # $"" listener # $"" main.py !"" infrastructure # !"" dev # # !"" main.tf # # !"" outputs.tf # # $"" variables.tf # !"" prod # # !"" main.tf # # !"" outputs.tf # # $"" variables.tf !"" project.json $"" project.prod.json

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Apex package.json { "name": "listener", "description": "S3 File Listener", "runtime": "python3.6", "memory": 128, "timeout": 5, "role": "arn:aws:iam::ACOUNTNUM:role/listen_lambda_function", "environment": {}, "defaultEnvironment": "dev" }

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S3 Event Handler import logging import boto3 log = logging.getLogger() log.setLevel(logging.DEBUG) def get_bucket_key(event); bucket = event['Records'][0]['s3']['bucket']['name'] key = event['Records'][0]['s3']['object']['key'] return bucket, key def handle(event, context): log.info('{}-{}'.format(event, context)) bucket_name, key_name = get_bucket_key(event)

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S3 Event Handler import logging import boto3 log = logging.getLogger() log.setLevel(logging.DEBUG) def get_bucket_key(event); bucket = event['Records'][0]['s3']['bucket']['name'] key = event['Records'][0]['s3']['object']['key'] return bucket, key def handle(event, context): log.info('{}-{}'.format(event, context)) bucket_name, key_name = get_bucket_key(event)

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S3 Event Handler import logging import boto3 log = logging.getLogger() log.setLevel(logging.DEBUG) def get_bucket_key(event); bucket = event['Records'][0]['s3']['bucket']['name'] key = event['Records'][0]['s3']['object']['key'] return bucket, key def handle(event, context): log.info('{}-{}'.format(event, context)) bucket_name, key_name = get_bucket_key(event)

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S3 Event Handler (cont.) values = { 'bucket_name': bucket_name, 'key_name': key_name, 'timestamp': datetime.utcnow().isoformat() } client = boto3.client('sqs') client.publish( TopicArn=topic_arn, Message=json.dumps(values) )

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AWS Logging Permissions data "aws_iam_policy_document" "listener_logging" { statement { sid = "AllowRoleToOutputCloudWatchLogs" effect = "Allow" actions = ["logs:*"] resources = ["*"] } } resource "aws_iam_policy" "listener_logs" { name = "listener_logs" description = "Allow listener to log operations" policy = "${data.aws_iam_policy_document.listener_logging.json}" }

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AWS IAM Role Assumption data "aws_iam_policy_document" "listener_lambda_assume_role" { statement { sid = "AllowRoleToBeUsedbyLambda" effect = "Allow" actions = ["sts:AssumeRole"] principals { type = "Service" identifiers = ["lambda.amazonaws.com"] } } } resource "aws_iam_role" "listener_lambda_function" { name = "listener_lambda_function" assume_role_policy = "${data.aws_iam_policy_document.listener_lambda_assume_role.json}" }

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AWS Policy A!achment resource "aws_iam_policy_attachment" "listener_logs_attach" { name = "listener_logs_attach" roles = ["${aws_iam_role.listener_lambda_function.name}"] policy_arn = "${aws_iam_policy.listener_logs.arn}" }

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Deploy Function and Infrastructure # apex deploy # apex infra plan # apex infra apply

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What about those other functions...

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Lambda Packages Zappa Project/Gun.io

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Lambda Packages List bcrypt cffi PyNaCl datrie LXML misaka MySQL-Python numpy OpenCV Pillow (PIL) psycopg2 PyCrypto cryptography pyproj python-ldap python- Levenshtein regex

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Dependency Handling in Apex "hooks":{ "build": "pip install -r requirements.txt -t ." }

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Function Considerations — atomic — idempotent

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Dis is the Remix — Longer Jobs — Legacy Pipelines

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Hybrid Pipeline overview

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Hybrid Pipeline overview

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Hybrid Pipeline overview

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Hybrid Pipeline overview

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Hybrid Pipeline overview

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Closing thoughts — Workload and Phases are important — 14x improvement — 0.73x improvement

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Questions?