R6
class to launch and manage local process workers.
See also
Other plugin_local:
crew_controller_local()
,
crew_launcher_local()
Super class
crew::crew_class_launcher
-> crew_class_launcher_local
Methods
Inherited methods
crew::crew_class_launcher$call()
crew::crew_class_launcher$crashes()
crew::crew_class_launcher$launch()
crew::crew_class_launcher$launch_workers()
crew::crew_class_launcher$poll()
crew::crew_class_launcher$scale()
crew::crew_class_launcher$set_name()
crew::crew_class_launcher$settings()
crew::crew_class_launcher$start()
crew::crew_class_launcher$terminate()
crew::crew_class_launcher$terminate_workers()
Method new()
Local launcher constructor.
Usage
crew_class_launcher_local$new(
name = NULL,
workers = NULL,
seconds_interval = NULL,
seconds_timeout = NULL,
seconds_launch = NULL,
seconds_idle = NULL,
seconds_wall = NULL,
seconds_exit = NULL,
tasks_max = NULL,
tasks_timers = NULL,
crashes_error = NULL,
tls = NULL,
processes = NULL,
r_arguments = NULL,
options_metrics = NULL,
options_local = NULL
)
Arguments
name
See
crew_launcher()
.workers
See
crew_launcher()
.seconds_interval
See
crew_launcher()
.seconds_timeout
See
crew_launcher()
.seconds_launch
See
crew_launcher()
.seconds_idle
See
crew_launcher()
.seconds_wall
See
crew_launcher()
.seconds_exit
See
crew_launcher()
.tasks_max
See
crew_launcher()
.tasks_timers
See
crew_launcher()
.crashes_error
See
crew_launcher()
.tls
See
crew_launcher()
.processes
See
crew_launcher()
.r_arguments
See
crew_launcher()
.options_metrics
options_local
reset_globals
Deprecated. See
crew_launcher()
.reset_packages
Deprecated. See
crew_launcher()
.reset_options
Deprecated. See
crew_launcher()
.garbage_collection
Deprecated. See
crew_launcher()
.
Examples
if (identical(Sys.getenv("CREW_EXAMPLES"), "true")) {
client <- crew_client()
client$start()
launcher <- crew_launcher_local(name = client$name)
launcher$start(url = client$url, profile = client$profile)
launcher$launch()
task <- mirai::mirai("result", .compute = client$profile)
mirai::call_mirai(task)
task$data
client$terminate()
}
Method launch_worker()
Launch a local process worker which will dial into a socket.
Arguments
call
Character of length 1 with a namespaced call to
crew_worker()
which will run in the worker and accept tasks.
Examples
if (identical(Sys.getenv("CREW_EXAMPLES"), "true")) {
client <- crew_client()
client$start()
launcher <- crew_launcher_local(name = client$name)
launcher$start(url = client$url, profile = client$profile)
launcher$launch()
task <- mirai::mirai("result", .compute = client$profile)
mirai::call_mirai(task)
task$data
client$terminate()
}
## ------------------------------------------------
## Method `crew_class_launcher_local$new`
## ------------------------------------------------
if (identical(Sys.getenv("CREW_EXAMPLES"), "true")) {
client <- crew_client()
client$start()
launcher <- crew_launcher_local(name = client$name)
launcher$start(url = client$url, profile = client$profile)
launcher$launch()
task <- mirai::mirai("result", .compute = client$profile)
mirai::call_mirai(task)
task$data
client$terminate()
}