112 lines
6.0 KiB
Racket
112 lines
6.0 KiB
Racket
#lang racket/base
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(require racket/match)
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(require preserves)
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(require "main.rkt")
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(require "bag.rkt")
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(require "schemas/gen/box-protocol.rkt")
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(require "schemas/gen/dataspace.rkt")
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(define ((box ds LIMIT REPORT_EVERY) turn)
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(define value (turn-field! turn 'box-value 0))
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(turn-assert/dataflow! turn ds (lambda (turn) (BoxState->preserves (BoxState (value)))))
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(define start-time (current-inexact-milliseconds))
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(define prev-value 0)
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(turn-assert! turn ds
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(Observe->preserves
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(Observe 'SetBox
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(turn-ref turn
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(entity #:message
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(lambda (turn new-value-rec)
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(define new-value (SetBox-value new-value-rec))
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(when (zero? (remainder new-value REPORT_EVERY))
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(define end-time (current-inexact-milliseconds))
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(define delta (/ (- end-time start-time) 1000.0))
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(define count (- new-value prev-value))
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(set! prev-value new-value)
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(set! start-time end-time)
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(log-info "Box got ~a (~a Hz)"
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new-value
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(/ count delta)))
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(when (= new-value LIMIT)
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(turn-stop-actor! turn))
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(value new-value))))))))
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(define ((client ds) turn)
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(turn-assert! turn ds
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(Observe->preserves
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(Observe 'BoxState
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(turn-ref turn
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(entity #:assert
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(lambda (turn current-value _handle)
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;; (log-info "Client got ~a" current-value)
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(turn-message! turn ds
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(SetBox->preserves
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(SetBox
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(+ (BoxState-value current-value)
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1))))))))))
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(let ((count 0))
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(turn-assert! turn ds
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(Observe->preserves
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(Observe 'BoxState
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(turn-ref turn
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(entity #:assert
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(lambda (turn current-value _handle)
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(set! count (+ count 1)))
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#:retract
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(lambda (turn _handle)
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(set! count (- count 1))
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(when (zero? count)
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(log-info "Client detected box termination")
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(turn-stop-actor! turn))))))))))
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(define (dataspace)
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(define handles (make-hash))
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(define assertions (make-bag))
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(define subscriptions (make-hash))
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(entity #:assert (lambda (turn rec handle)
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(when (record? rec)
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(hash-set! handles handle rec)
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(when (eq? (bag-change! assertions rec +1) 'absent->present)
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(match (parse-Observe rec)
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[(? eof-object?) (void)]
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[(Observe label observer)
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(define seen (make-hash))
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(hash-set! (hash-ref! subscriptions label make-hasheq) observer seen)
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(for [(existing (in-bag assertions))]
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(when (preserve=? (record-label existing) label)
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(hash-set! seen existing (turn-assert! turn observer existing))))])
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(for [((observer seen) (in-hash (hash-ref subscriptions (record-label rec) '#hash())))]
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(unless (hash-has-key? seen rec)
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(hash-set! seen rec (turn-assert! turn observer rec)))))))
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#:retract (lambda (turn upstream-handle)
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(define rec (hash-ref handles upstream-handle #f))
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(when rec
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(hash-remove! handles upstream-handle)
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(when (eq? (bag-change! assertions rec -1) 'present->absent)
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(for [(seen (in-hash-values (hash-ref subscriptions (record-label rec) '#hash())))]
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(turn-retract! turn (hash-ref seen rec))
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(hash-remove! seen rec))
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(match (parse-Observe rec)
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[(? eof-object?) (void)]
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[(Observe label observer)
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(let ((subscribers (hash-ref subscriptions label)))
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(hash-remove! subscribers observer)
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(when (hash-empty? subscribers)
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(hash-remove! subscriptions label)))]))))
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#:message (lambda (turn message)
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(when (record? message)
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(for [(peer (in-hash-keys (hash-ref subscriptions (record-label message) '#hash())))]
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(turn-message! turn peer message))))))
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(module+ main
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(time
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(actor-system
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(lambda (turn)
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(actor-daemon! (facet-actor (turn-active-facet turn)) #t)
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(define disarm (facet-prevent-inert-check! (turn-active-facet turn)))
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(define ds (turn-ref turn (dataspace)))
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(turn-spawn! turn (box ds 500000 100000))
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(turn-spawn! turn (client ds))))))
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