Play Scheduled async tasks don't fire on Heroku
My Play v2.6 app uses scheduled tasks. These work when run locally, but never fire when deployed to Heroku.
There are previous questions related to this, but none have a relevant answer.
The logging when setting the task is printed, but the log messages when the task is executed does not appear. Also, the effect of the task being executed never happens.
The schedule is for 1 second in the future, so there's no chance for Heroku to be sleeping the app.
The source:
@Singleton
class PaymentProcessor @Inject()(repo: PaymentRepo,
config: Configuration,
system: ActorSystem) {
private val actor = system.actorOf(Props(new ActorDef()))
private implicit val ec: ExecutionContextExecutor = system.dispatcher
def checkForPayments(reason: String, after: FiniteDuration = 1.second): Unit = {
Logger.debug(s"Checking again for due payments after $after")
system.scheduler.scheduleOnce(after, actor, CheckForPayments(reason))
}
class ActorDef() extends Actor {
override def receive: Receive = {
case CheckForPayments(reason) =>
Logger.debug(s"Checking for due payments ($reason)")
// followed by logic to find and transact due payments
}
}
Here's the unabbreviated source.
The output locally:
[debug] application - Checking again for due payments after 1 second
[debug] application - Checking for due payments (CSV uploaded)
(after which, due payments are found & transacted)
The output on Heroku:
2018-11-18T11:48:01.247773+00:00 app[web.1]: [debug] application - Checking again for due payments after 1 second
(after which due payments are not transacted)
Is this just a limitation of the free tier of Heroku? Or is there something I can configure?
heroku playframework
asked Nov 18 '18 at 11:52
SynessoSynesso
20.1k27108166
add a comment |
My Play v2.6 app uses scheduled tasks. These work when run locally, but never fire when deployed to Heroku.
There are previous questions related to this, but none have a relevant answer.
The logging when setting the task is printed, but the log messages when the task is executed does not appear. Also, the effect of the task being executed never happens.
The schedule is for 1 second in the future, so there's no chance for Heroku to be sleeping the app.
The source:
@Singleton
class PaymentProcessor @Inject()(repo: PaymentRepo,
config: Configuration,
system: ActorSystem) {
private val actor = system.actorOf(Props(new ActorDef()))
private implicit val ec: ExecutionContextExecutor = system.dispatcher
def checkForPayments(reason: String, after: FiniteDuration = 1.second): Unit = {
Logger.debug(s"Checking again for due payments after $after")
system.scheduler.scheduleOnce(after, actor, CheckForPayments(reason))
}
class ActorDef() extends Actor {
override def receive: Receive = {
case CheckForPayments(reason) =>
Logger.debug(s"Checking for due payments ($reason)")
// followed by logic to find and transact due payments
}
}
Here's the unabbreviated source.
The output locally:
[debug] application - Checking again for due payments after 1 second
[debug] application - Checking for due payments (CSV uploaded)
(after which, due payments are found & transacted)
The output on Heroku:
2018-11-18T11:48:01.247773+00:00 app[web.1]: [debug] application - Checking again for due payments after 1 second
(after which due payments are not transacted)
Is this just a limitation of the free tier of Heroku? Or is there something I can configure?
heroku playframework
asked Nov 18 '18 at 11:52
SynessoSynesso
20.1k27108166
There shouldn't be any limitation of the free tier that would prevent this. Do you know how thescheduleOncemethod works? Like, does it send an HTTP request, or does it create an event in-memory? Is it possible to trace through that call in some way?
– codefinger
Nov 19 '18 at 15:04
add a comment |
My Play v2.6 app uses scheduled tasks. These work when run locally, but never fire when deployed to Heroku.
There are previous questions related to this, but none have a relevant answer.
The logging when setting the task is printed, but the log messages when the task is executed does not appear. Also, the effect of the task being executed never happens.
The schedule is for 1 second in the future, so there's no chance for Heroku to be sleeping the app.
The source:
@Singleton
class PaymentProcessor @Inject()(repo: PaymentRepo,
config: Configuration,
system: ActorSystem) {
private val actor = system.actorOf(Props(new ActorDef()))
private implicit val ec: ExecutionContextExecutor = system.dispatcher
def checkForPayments(reason: String, after: FiniteDuration = 1.second): Unit = {
Logger.debug(s"Checking again for due payments after $after")
system.scheduler.scheduleOnce(after, actor, CheckForPayments(reason))
}
class ActorDef() extends Actor {
override def receive: Receive = {
case CheckForPayments(reason) =>
Logger.debug(s"Checking for due payments ($reason)")
// followed by logic to find and transact due payments
}
}
Here's the unabbreviated source.
The output locally:
[debug] application - Checking again for due payments after 1 second
[debug] application - Checking for due payments (CSV uploaded)
(after which, due payments are found & transacted)
The output on Heroku:
2018-11-18T11:48:01.247773+00:00 app[web.1]: [debug] application - Checking again for due payments after 1 second
(after which due payments are not transacted)
Is this just a limitation of the free tier of Heroku? Or is there something I can configure?
heroku playframework
asked Nov 18 '18 at 11:52
SynessoSynesso
20.1k27108166
My Play v2.6 app uses scheduled tasks. These work when run locally, but never fire when deployed to Heroku.
There are previous questions related to this, but none have a relevant answer.
The logging when setting the task is printed, but the log messages when the task is executed does not appear. Also, the effect of the task being executed never happens.
The schedule is for 1 second in the future, so there's no chance for Heroku to be sleeping the app.
The source:
@Singleton
class PaymentProcessor @Inject()(repo: PaymentRepo,
config: Configuration,
system: ActorSystem) {
private val actor = system.actorOf(Props(new ActorDef()))
private implicit val ec: ExecutionContextExecutor = system.dispatcher
def checkForPayments(reason: String, after: FiniteDuration = 1.second): Unit = {
Logger.debug(s"Checking again for due payments after $after")
system.scheduler.scheduleOnce(after, actor, CheckForPayments(reason))
}
class ActorDef() extends Actor {
override def receive: Receive = {
case CheckForPayments(reason) =>
Logger.debug(s"Checking for due payments ($reason)")
// followed by logic to find and transact due payments
}
}
Here's the unabbreviated source.
The output locally:
[debug] application - Checking again for due payments after 1 second
[debug] application - Checking for due payments (CSV uploaded)
(after which, due payments are found & transacted)
The output on Heroku:
2018-11-18T11:48:01.247773+00:00 app[web.1]: [debug] application - Checking again for due payments after 1 second
(after which due payments are not transacted)
Is this just a limitation of the free tier of Heroku? Or is there something I can configure?
heroku playframework
heroku playframework
asked Nov 18 '18 at 11:52
SynessoSynesso
20.1k27108166
asked Nov 18 '18 at 11:52
SynessoSynesso
20.1k27108166
asked Nov 18 '18 at 11:52
SynessoSynesso
20.1k27108166
asked Nov 18 '18 at 11:52
SynessoSynesso
20.1k27108166
asked Nov 18 '18 at 11:52
SynessoSynesso
20.1k27108166
20.1k27108166
There shouldn't be any limitation of the free tier that would prevent this. Do you know how thescheduleOncemethod works? Like, does it send an HTTP request, or does it create an event in-memory? Is it possible to trace through that call in some way?
– codefinger
Nov 19 '18 at 15:04
add a comment |
There shouldn't be any limitation of the free tier that would prevent this. Do you know how thescheduleOncemethod works? Like, does it send an HTTP request, or does it create an event in-memory? Is it possible to trace through that call in some way?
– codefinger
Nov 19 '18 at 15:04
There shouldn't be any limitation of the free tier that would prevent this. Do you know how the
scheduleOnce method works? Like, does it send an HTTP request, or does it create an event in-memory? Is it possible to trace through that call in some way?– codefinger
Nov 19 '18 at 15:04
There shouldn't be any limitation of the free tier that would prevent this. Do you know how the
scheduleOnce method works? Like, does it send an HTTP request, or does it create an event in-memory? Is it possible to trace through that call in some way?– codefinger
Nov 19 '18 at 15:04
add a comment |
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There shouldn't be any limitation of the free tier that would prevent this. Do you know how the
scheduleOncemethod works? Like, does it send an HTTP request, or does it create an event in-memory? Is it possible to trace through that call in some way?– codefinger
Nov 19 '18 at 15:04