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(remote-node addr fn) runs a node on a federation peer. Transport is the fed-sx boundary, mocked by a peer registry (flow-peer-register!); raises flow-remote-unreachable / flow-remote-no-fn. Composes with sequence/suspend/retry. Also fixes conformance.sh to load remote.sx before api.sx. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
23 lines
1.5 KiB
Plaintext
23 lines
1.5 KiB
Plaintext
;; lib/flow/remote.sx — distributed nodes via fed-sx (Phase 4).
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;;
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;; A node can execute on a federation peer. The transport is the fed-sx boundary;
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;; it is MOCKED in tests by a peer registry mapping addr -> function table. In
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;; production flow-transport would issue a fed-sx call; here it dispatches locally.
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;;
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;; (flow-peer-register! addr table) — register a mock peer. table is a list of
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;; (fn-name proc) entries — the functions that peer exposes.
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;; (flow-transport addr fn input) — invoke fn on the peer with input. Raises
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;; (flow-remote-unreachable) if the addr is unknown, (flow-remote-no-fn) if the
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;; peer does not expose fn.
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;; (remote-node addr fn) — a node that runs fn on the peer at addr.
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(define
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flow-remote-src
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"(define flow-peers (list))\n (define (flow-assoc key alist)\n (if (null? alist)\n #f\n (if (eq? (car (car alist)) key) (car (cdr (car alist))) (flow-assoc key (cdr alist)))))\n (define (flow-peer-register! addr table) (set! flow-peers (cons (list addr table) flow-peers)))\n (define (flow-transport addr fn input)\n (let ((table (flow-assoc addr flow-peers)))\n (if table\n (let ((proc (flow-assoc fn table)))\n (if proc (proc input) (raise (quote flow-remote-no-fn))))\n (raise (quote flow-remote-unreachable)))))\n (define (remote-node addr fn) (lambda (input) (flow-transport addr fn input)))")
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(define
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flow-load-remote!
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(fn
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(env)
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(begin (scheme-eval-program (scheme-parse-all flow-remote-src) env) env)))
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