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typed flink getting closer

This commit is contained in:
Sam Caldwell 2019-05-23 11:14:14 -04:00
parent 99d5916bd1
commit 24efe43a6f
1 changed files with 21 additions and 21 deletions
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42
racket/typed/examples/roles/flink.rkt
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@ -164,7 +164,7 @@ The JobManager then performs the job and, when finished, asserts (job-finished I
(require/typed "flink-support.rkt"
[string->words : (→fn String (List String))])
(define (spawn-task-runner)
#;(define (spawn-task-runner)
(define id (gensym 'task-runner))
(spawn τc
(start-facet runner
@ -199,7 +199,7 @@ The JobManager then performs the job and, when finished, asserts (job-finished I
;; ---------------------------------------------------------------------------------------------------
;; TaskManager
(define (spawn-task-manager)
#;(define (spawn-task-manager)
(define id (gensym 'task-manager))
(spawn τc
(start-facet tm
@ -334,17 +334,6 @@ The JobManager then performs the job and, when finished, asserts (job-finished I
[waiting-tasks (List PendingTask) not-ready]
[tasks-in-progress Int 0])
(begin/dataflow
(define slots (slots-available))
(define-tuple (ts readys)
(split-at/lenient (ref ready-tasks) slots))
(for ([t ts])
#f
#;(perform-task t push-results))
(unless (empty? ts)
;; the empty? check may be necessary to avoid a dataflow loop
(set! ready-tasks readys)))
;; Task -> Void
(define (add-ready-task! [t : ConcreteTask])
;; TODO - use functional-queue.rkt from ../../
@ -379,16 +368,17 @@ The JobManager then performs the job and, when finished, asserts (job-finished I
;; Task (ID TaskResult -> Void) -> Void
;; Requires (task-ready? t)
(define (perform-task [t : ConcreteTask]
[k : (→fn TaskID TaskResult (Tuple))]
-> ★/t)
(define (∀ (ρ) (perform-task [t : ConcreteTask]
[k : (proc TaskID TaskResult -> ★/t
#:roles (ρ))]))
(start-facet perform
(on start (set! tasks-in-progress (add1 (ref tasks-in-progress))))
(on stop (set! tasks-in-progress (sub1 (ref tasks-in-progress))))
(match-define (task (bind this-id TaskID) (bind desc ConcreteWork)) t)
(log "JM begins on task ~a" this-id)
(define (select-a-task-manager)
(define (∀ (ρ2) (select-a-task-manager [assign-task : (proc ID -> ★/t
#:roles (ρ2))]))
(start-facet this-facet
(begin/dataflow
(define mngr?
@ -399,7 +389,7 @@ The JobManager then performs the job and, when finished, asserts (job-finished I
[(some (bind mngr ID))
(take-slot! mngr)
(stop this-facet
#;(assign-task mngr))]
(assign-task mngr))]
[none
#f])
#f)))
@ -410,7 +400,7 @@ The JobManager then performs the job and, when finished, asserts (job-finished I
(assert (task-assignment mngr job-id t))
(on (retracted (task-manager mngr discard))
;; our task manager has crashed
(stop this-facet (select-a-task-manager)))
(stop this-facet #;(select-a-task-manager)))
(on start
;; N.B. when this line was here, and not after `(when mngr ...)` above,
;; things didn't work. I think that due to script scheduling, all ready
@ -428,11 +418,21 @@ The JobManager then performs the job and, when finished, asserts (job-finished I
;; don't think we need a release-slot! here, because if we've heard back from a task manager,
;; they should have told us a different slot count since we tried to give them work
(log "JM overloaded manager ~a with task ~a" mngr this-id)
(stop this-facet (select-a-task-manager))]
(stop this-facet #;(select-a-task-manager))]
[(finished (bind results TaskResult))
(log "JM receives the results of task ~a" this-id)
(stop perform (k this-id results))]))))
(on start (select-a-task-manager))))
(on start (select-a-task-manager assign-task))))
(begin/dataflow
(define slots (slots-available))
(define-tuple (ts readys)
(split-at/lenient (ref ready-tasks) slots))
(for ([t ts])
(perform-task t push-results))
(unless (empty? ts)
;; the empty? check may be necessary to avoid a dataflow loop
(set! ready-tasks readys)))
#f))))