CronConfigParser

You can parse the cron configuration for readability.

Installation

Add this line to your application's Gemfile:

gem 'cron_config_parser'

And then execute:

$ bundle

Or install it yourself as:

$ gem install cron_config_parser

Usage

You can parse the cron configuration for readability with CronConfigParser.call.

CronConfigParser.call('00 5 * * * Asia/Tokyo')
=> #<CronConfigParser::CronConfig:0x00007fa4f492e820
 @days=["*"],
 @hours=["5"],
 @minutes=["00"],
 @months=["*"],
 @timezone="Asia/Tokyo",
 @wdays=["*"]>

You can check configured properties.

# return false if configured nil or '*'
config = CronConfigParser.call('00 5 * * * Asia/Tokyo')
config.minutes_configured?
=> true
config.days_configured?
=> false

You can check next execute time.

config = CronConfigParser.call('00 5 * * * Asia/Tokyo')
config.next_execute_at
=> 2019-05-23 05:00:00 +0900

# You can check execute schedule in future by execute_schedule.
config.execute_schedule(execute_count: 5, annotation: 'DailyJob')
=>
[{:annotation=>"DailyJob", :execute_at=>2019-05-23 05:00:00 +0900},
 {:annotation=>"DailyJob", :execute_at=>2019-05-24 05:00:00 +0900},
 {:annotation=>"DailyJob", :execute_at=>2019-05-25 05:00:00 +0900},
 {:annotation=>"DailyJob", :execute_at=>2019-05-26 05:00:00 +0900},
 {:annotation=>"DailyJob", :execute_at=>2019-05-27 05:00:00 +0900}]

This gem check simple validation when CronConfigParser::CronConfig object initialize. If the config is invalid, Config::SyntaxError or Config::RequiredError is raised.

# not configured require property.
CronConfigParser.call('00 5,13 * * ')
=> CronConfigParser::ConfigRequiredError

# configured invalid property.
CronConfigParser.call('00 5,a * * * Asia/Tokyo')
=> CronConfigParser::ConfigSyntaxError

# this check is Invalidationable.
CronConfigParser.call('00 5,a * * * Asia/Tokyo', validation: false)
=> #<CronConfigParser::CronConfig:0x00007fcedf09cdf0
 @days=["*"],
 @hours=["5", "a"],
 @minutes=["00"],
 @months=["*"],
 @timezone="Asia/Tokyo",
 @wdays=["*"]>

Code Status

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/Madogiwa0124/cron_config_parser. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The gem is available as open source under the terms of the MIT License.

Code of Conduct

Everyone interacting in the CronConfigParser project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.