Quantum v3.0.0-rc.2 Quantum behaviour View Source

Defines a quantum Scheduler.

When used, the quantum scheduler expects the :otp_app as option. The :otp_app should point to an OTP application that has the quantum runner configuration. For example, the quantum scheduler:

defmodule MyApp.Scheduler do
  use Quantum, otp_app: :my_app
end

Could be configured with:

config :my_app, MyApp.Scheduler,
  jobs: [
    {"@daily", {Backup, :backup, []}},
  ]

Configuration:

  • :timeout - Sometimes, you may come across GenServer timeout errors esp. when you have too many jobs or high load. The default GenServer.call timeout is 5000.

  • :jobs - list of cron jobs to execute

  • :schedule - Default schedule of new Job

  • :run_strategy - Default Run Strategy of new Job

  • :overlap - Default overlap of new Job,

  • :timezone - Default timezone of new Job

Link to this section Summary

Types

t()

Quantum Scheduler Implementation

Callbacks

Activates a job by name

Adds a new job

Deactivates a job by name

Deletes all jobs

Deletes a job by name

Resolves a job by name

A callback executed when the quantum starts.

Returns the list of currently defined jobs

Creates a new Job. The job can be added by calling add_job/1.

Starts supervision and return {:ok, pid} or just :ok if nothing needs to be done.

Shuts down the quantum represented by the given pid.

Link to this section Types

Quantum Scheduler Implementation

Link to this section Callbacks

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activate_job(arg1, atom)

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activate_job(GenStage.stage(), atom()) :: :ok

Activates a job by name

Adds a new job

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deactivate_job(arg1, atom)

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deactivate_job(GenStage.stage(), atom()) :: :ok

Deactivates a job by name

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delete_all_jobs(arg1)

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delete_all_jobs(GenStage.stage()) :: :ok

Deletes all jobs

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delete_job(arg1, atom)

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delete_job(GenStage.stage(), atom()) :: :ok

Deletes a job by name

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find_job(arg1, atom)

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find_job(GenStage.stage(), atom()) :: Quantum.Job.t() | nil

Resolves a job by name

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init(config)

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init(config :: Keyword.t()) :: Keyword.t()

A callback executed when the quantum starts.

It takes the quantum configuration that is stored in the application environment, and may change it to suit the application business.

It must return the updated list of configuration

Returns the list of currently defined jobs

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new_job(opts)

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new_job(opts :: Keyword.t()) :: Quantum.Job.t()

Creates a new Job. The job can be added by calling add_job/1.

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start_link(opts)

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start_link(opts :: Keyword.t()) ::
  {:ok, pid()} | {:error, {:already_started, pid()}} | {:error, term()}

Starts supervision and return {:ok, pid} or just :ok if nothing needs to be done.

Returns {:error, {:already_started, pid}} if the repo is already started or {:error, term} in case anything else goes wrong.

Options

See the configuration in the moduledoc for options.

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stop(server, timeout)

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stop(server :: GenServer.server(), timeout()) :: :ok

Shuts down the quantum represented by the given pid.