The missing cron CLI for AWS Cloudwatch and Lambda

Do you have an AWS account? Great. Do you want to run cron jobs in the cloud?

Cronyo provides A simple CLI to manage your cron jobs on AWS.

In addition, Cronyo can instantly deploy a couple of super-simple, helpful and secure lambda functions to perform HTTP GET/POST requests for you. So if you need to trigger any webhooks on schedule, an AWS account and Cronyo is all you need :)

Key Features:

• Simple command line interface to manage cron jobs (much simpler than aws events put-rules, aws lambda add-permission, aws events put-targets, Cloudformation, or Terraform)
• Pre-built AWS Lambda functions for simple HTTP GET/POST requests, or use your own lambdas.
• Cost Effective (you'll need a TON of cron rules to worry about costs).
• Simple but Secure (HTTP GET/POST include an HMAC signature so you can validate the request is genuine).
• Easy deployment of lambda functions using cronyo deploy. No need to twiddle with AWS.
• Easily add, delete, enable, disable and export (to yaml) your cron rules.

read the blog post: Simple and Secure Cron using AWS Lambda

Cronyo takes the next step, and provides an automated solution with a CLI.

• import from yaml
• export/import from crontab-esque files
• add other lambdas?

You will need an AWS account with the aws cli installed. Then run:

$ pip install cronyo
$ cronyo configure
$ cronyo deploy # (optional, if you want to use the http POST/GET lambdas)

It will automatically configure two AWS Lambda functions (cronyo-http_post and cronyo-http_get)

• cronyo --help - prints a help screen.
• cronyo configure - opens your editor so you can edit the config.json file. Use it to update your namespace and signing key.
• cronyo preflight - runs preflight checks to make sure you have access to AWS.
• cronyo deploy - deploys the code and configs to AWS automatically.
• cronyo export - exports all existing cron rules to yaml
• cronyo export --prefix - exports all existing cron rules starting with prefix to yaml
• cronyo export --search - exports all existing cron rules matching the search string anywhere in the name
• cronyo add http_get '{"url": "https://example.com"}' --cron "5 4 * * ? *" - sends an HTTP GET request to example.com at 4:05am every day
• cronyo disable cronyo-24a0b5504111d9b1d797 - disables cron with the name cronyo-24a0b5504111d9b1d797
• cronyo enable cronyo-24a0b5504111d9b1d797 - enables cron with the name cronyo-24a0b5504111d9b1d797
• cronyo delete cronyo-24a0b5504111d9b1d797 - deletes cron with the name cronyo-24a0b5504111d9b1d797
• cronyo update http_get '{"url": "https://example.com"}' --cron "5 4 * * ? *" --name myrule - updates an existing rule

cronyo creates a name for your cron jobs automatically (unless a custom name is specified). Names are required unique identifiers, and cannot be changed after creation (this is AWS limitation). Names can only contain certain characters.

cronyo comes with a (configurable) namespace -- cronyo by default. You can change the default using cronyo configure.

cronyo supports cron or rate expressions. See the AWS docs for specific info.

Note that --cron "<expr>" must be surrounded by quotes, however --rate won't work with quotes. This is because cron expressions include characters like * which mess-up the CLI input.

• cronyo add http_get '{"url": "https://example.com"}' --cron "5 4 * * ? *" will send an HTTP GET request to example.com at 4:05am every day
• cronyo add http_post '{"url": "https://example.com"}' --rate 5 minutes will send an HTTP POST request to example.com every 5 minutes
• cronyo add http_post '{"url": "https://example.com", "headers": {"User-Agent": "007"}, "cookies": {"biscuit": "oreo"}, "params": {"a": "b"}, "data": {"key": "value"}}' --rate 5 minutes will send an HTTP POST with custom cookies, headers, URL params and form data.
• cronyo add arn:aws:lambda:us-east-1:313623401231:function:cronyo-http_post:live '{"url": "https://example.com"}' --rate 5 minutes will call a lambda function with a specific ARN with given event paramaters every 5 minutes
• cronyo add http_post '{"url": "https://example.com"}' --rate 5 minutes --name my-cron-job using --name to provide a custom name (see Names above)
• cronyo add http_post '{"url": "https://example.com"}' --rate 5 minutes --description "describe your cron job" using --description to provide a description for the job.

Cronyo is distributed under the MIT license. All 3rd party libraries and components are distributed under their respective license terms.

Copyright (C) 2020 Yoav Aner

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