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Use newly-refactored mux in endpoint implementation

This commit is contained in:
Tony Garnock-Jones 2015-12-05 06:23:28 +13:00
parent 4db7c17dc8
commit a9600b0de8
1 changed files with 15 additions and 28 deletions
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43
prospect/endpoint.rkt
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@ -25,9 +25,7 @@
;; An EID is a Nat.
;; Endpoint-group private states
(struct endpoint-group (next-eid ;; EID
routing-table ;; (Matcherof (Setof EID))
interests ;; (HashTable EID Matcher)
(struct endpoint-group (mux ;; Mux
endpoints ;; (HashTable EID Endpoint)
state ;; Any
)
@ -47,9 +45,7 @@
(struct as-endpoint (eid action) #:prefab)
(define (make-endpoint-group initial-state)
(endpoint-group 0
(matcher-empty)
(hash)
(endpoint-group (mux)
(hash)
initial-state))
@ -76,16 +72,15 @@
(define (inert-endpoint e state) #f)
(define (endpoint-group-handle-event e g)
(match-define (endpoint-group _ routing-table interests endpoints state) g)
(match-define (endpoint-group m endpoints state) g)
(define affected-eids
(match e
[#f (hash-keys endpoints)]
[(? patch?) (compute-affected-pids routing-table e)]
[(message body)
(tset->list (matcher-match-value routing-table (observe body) (datum-tset)))]))
[(? patch?) (compute-affected-pids (mux-routing-table m) e)]
[(message body) (mux-route-message m body)]))
(sequence-handlers g (for/list [(eid (sort affected-eids <))]
(list (if (patch? e)
(view-patch e (hash-ref interests eid matcher-empty))
(view-patch e (mux-interests-of m eid))
e)
eid
(hash-ref endpoints eid (lambda () inert-endpoint))))))
@ -120,21 +115,11 @@
(cons actions cumulative-patch)))
(define (interpret-endpoint-patch cumulative-patch actions g eid p0)
(define old-interests (hash-ref (endpoint-group-interests g) eid matcher-empty))
(define old-routing-table (endpoint-group-routing-table g))
(define p (limit-patch (label-patch p0 (datum-tset eid)) old-interests))
(define p-aggregate (compute-aggregate-patch p eid old-routing-table))
(define new-interests (apply-patch old-interests p))
(define new-routing-table (apply-patch old-routing-table p))
(define-values (new-mux _eid p p-aggregate)
(mux-update-stream (endpoint-group-mux g) eid p0))
(values (patch-seq cumulative-patch p-aggregate)
actions
(struct-copy endpoint-group g
[routing-table new-routing-table]
[interests (if (matcher-empty? new-interests)
(hash-remove (endpoint-group-interests g) eid)
(hash-set (endpoint-group-interests g)
eid
new-interests))])))
(struct-copy endpoint-group g [mux new-mux])))
(define (interpret-endpoint-action cumulative-patch actions g eid endpoint-action)
(match endpoint-action
@ -146,12 +131,13 @@
[(? patch? p0)
(interpret-endpoint-patch cumulative-patch actions g eid p0)]
[(add-endpoint function)
(define new-eid (endpoint-group-next-eid g))
(define-values (new-mux new-eid _p _p-aggregate)
(mux-add-stream (endpoint-group-mux g) empty-patch))
(define-values (new-ep initial-transition) (function new-eid (endpoint-group-state g)))
(interpret-endpoint-actions cumulative-patch
actions
(struct-copy endpoint-group g
[next-eid (+ new-eid 1)]
[mux new-mux]
[endpoints
(hash-set (endpoint-group-endpoints g)
new-eid
@ -183,11 +169,12 @@
endpoint-action)))
(define (pretty-print-endpoint-group g [p (current-output-port)])
(match-define (endpoint-group _ routing-table interests endpoints state) g)
(match-define (endpoint-group m endpoints state) g)
(fprintf p "ENDPOINT GROUP:\n")
(fprintf p " ---- STATE:\n")
(display (indented-port-output 6 (lambda (p) (prospect-pretty-print state p))) p)
(newline p)
(fprintf p " - ~a endpoints\n" (hash-count endpoints))
(fprintf p " - next eid: ~a\n" (mux-next-pid mux))
(fprintf p " - routing table:\n")
(pretty-print-matcher routing-table p))
(pretty-print-matcher (mux-routing-table mux) p))