NgxExport.Tools.SplitService

Split services

Split services split the whole service into two separate actions for the first (ignition service) and the following (deferred service) runs.

Exported functions

splitService

Arguments

:: (a -> IO ByteString)

Ignition service

-> (a -> IO ByteString)

Deferred service

-> a

Configuration

-> NgxExportService

Sets two different actions as ignition and deferred services.

When used as a single-shot service (in terms of module NgxExport.Tools.SimpleService), the second action only runs on exit of a worker process, and therefore can be used as a cleanup handler.

ignitionService

Arguments

:: (a -> IO ByteString)

Ignition service

-> a

Configuration

-> NgxExportService

Sets an action as an ignition service.

deferredService

Arguments

:: (a -> IO ByteString)

Deferred service

-> a

Configuration

-> NgxExportService

Sets an action as a deferred service.

When used as a single-shot service (in terms of module NgxExport.Tools.SimpleService), the action only runs on exit of a worker process, and therefore can be used as a cleanup handler.

Type declarations

type NgxExportService

Arguments

 = Bool

First-run flag

-> IO ByteString

Allows writing fancier declarations of services.

For example, service signalUpconf in

type Upconf = [Text]

signalUpconf :: Upconf -> Bool -> IO ByteString
signalUpconf = voidHandler' . mapConcurrently_ getUrl

ngxExportSimpleServiceTyped 'signalUpconf ''Upconf $
    PersistentService Nothing

can be rewritten in a fancier way:

signalUpconf :: Upconf -> NgxExportService
signalUpconf = voidHandler' . mapConcurrently_ getUrl

Since: 1.2.2