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The post-append fan-out that fires durable flows from arriving
activities (fed-sx-triggers-loop.md Phases 2+3), native into next/flow
— no cross-guest FFI.
- pipeline.erl: apply_triggers/3 runs AFTER the kernel append (rejected
activities never reach it). It looks the activity's type up in the
trigger registry, drops specs whose guard/actor-scope fails or whose
{activity_cid, trigger_cid} pair already fired (federation can deliver
the same activity twice — dedup is keyed on that pair, read from the
actor's :triggers_fired), and dispatches the rest. Returns the audit
triples for the kernel to fold into :triggers_fired + its projection.
Must not be called inside a `try` (it does gen_server:calls, which
deadlock the scheduler inside a try); running post-append in its own
step satisfies that.
- flow_dispatch.erl: bridges a matched trigger to flow_store:start, with
the activity bound into the flow's input env. guard_passes/3 gates on
actor-scope + guard. Failures (unknown flow, crashing first step) come
back as {error, _}, never raised — one flow can't take down the rest.
- flow_store.erl: drive wrapped in try (the drive is pure, so the try is
safe) so a flow whose step raises yields {error, {flow_crashed, _}}
instead of crashing the store.
Tests: flow_dispatch.sh (12), pipeline_triggers.sh (10). lib/erlang
771/771, next/flow 34/34.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
131 lines
6.9 KiB
Bash
Executable File
131 lines
6.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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# next/tests/flow_dispatch.sh — fed-sx triggers Phase 3.
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#
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# flow_dispatch bridges a matched trigger to a started flow — a native
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# flow_store:start (the engine is Erlang-on-SX too, no FFI). Confirms
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# guard/actor-scope gating, the audit triple, synchronous first-step
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# execution, suspend/resume of a started instance, a branch on an
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# activity field, and graceful handling of an unknown flow name.
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set -uo pipefail
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cd "$(git rev-parse --show-toplevel)"
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SX_SERVER="${SX_SERVER:-hosts/ocaml/_build/default/bin/sx_server.exe}"
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if [ ! -x "$SX_SERVER" ]; then
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SX_SERVER="/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe"
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fi
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if [ ! -x "$SX_SERVER" ]; then
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echo "ERROR: sx_server.exe not found." >&2
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exit 1
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fi
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VERBOSE="${1:-}"
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PASS=0; FAIL=0; ERRORS=""
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TMPFILE=$(mktemp); trap "rm -f $TMPFILE" EXIT
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# Activity (Create of a Note by alice), receiving actor-state, and a
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# couple of flows: `capture` echoes the activity's type out of the
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# flow's input env; `wait_flow` suspends then wraps the resumed value;
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# `cat_flow` branches on the inner object's :type.
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ACT='[{type, create}, {actor, alice}, {id, <<97,99,105,100>>}, {object, [{type, note}]}]'
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AS='[{actor_id, alice}]'
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CAP='flow_spec:flow_node(fun(In) -> {ok, A} = envelope:get_field(activity, In), {ok, T} = envelope:get_field(type, A), T end)'
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WAITF='flow_spec:sequence([flow:suspend(w), flow_spec:flow_node(fun(V) -> {got, V} end)])'
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CATF='flow_spec:branch(fun(In) -> {ok, A} = envelope:get_field(activity, In), {ok, O} = envelope:get_field(object, A), envelope:get_field(type, O) =:= {ok, note} end, flow_spec:flow_const(is_note), flow_spec:flow_const(not_note))'
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cat > "$TMPFILE" <<EPOCHS
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(epoch 1)
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(load "lib/erlang/tokenizer.sx")
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(load "lib/erlang/parser.sx")
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(load "lib/erlang/parser-core.sx")
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(load "lib/erlang/parser-expr.sx")
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(load "lib/erlang/parser-module.sx")
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(load "lib/erlang/transpile.sx")
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(load "lib/erlang/runtime.sx")
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(load "lib/erlang/vm/dispatcher.sx")
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(epoch 2)
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(eval "(er-load-gen-server!)")
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(eval "(get (erlang-load-module (file-read \"next/kernel/envelope.erl\")) :name)")
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(eval "(get (erlang-load-module (file-read \"next/flow/flow.erl\")) :name)")
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(eval "(get (erlang-load-module (file-read \"next/flow/flow_spec.erl\")) :name)")
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(eval "(get (erlang-load-module (file-read \"next/flow/flow_store.erl\")) :name)")
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(eval "(get (erlang-load-module (file-read \"next/kernel/trigger_registry.erl\")) :name)")
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(epoch 3)
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(eval "(get (erlang-load-module (file-read \"next/kernel/flow_dispatch.erl\")) :name)")
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;; ── guard / actor-scope gating ─────────────────────────────
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(epoch 10)
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(eval "(get (erlang-eval-ast \"flow_dispatch:guard_passes(trigger_registry:mk_spec(c, f, undefined, any), ${ACT}, ${AS})\") :name)")
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(epoch 11)
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(eval "(get (erlang-eval-ast \"flow_dispatch:guard_passes(trigger_registry:mk_spec(c, f, fun(_, _) -> false end, any), ${ACT}, ${AS}) =:= false\") :name)")
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(epoch 12)
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(eval "(get (erlang-eval-ast \"flow_dispatch:guard_passes(trigger_registry:mk_spec(c, f, fun(A, _) -> envelope:get_field(actor, A) =:= {ok, alice} end, any), ${ACT}, ${AS})\") :name)")
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(epoch 13)
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(eval "(get (erlang-eval-ast \"flow_dispatch:guard_passes(trigger_registry:mk_spec(c, f, undefined, alice), ${ACT}, ${AS})\") :name)")
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(epoch 14)
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(eval "(get (erlang-eval-ast \"flow_dispatch:guard_passes(trigger_registry:mk_spec(c, f, undefined, bob), ${ACT}, ${AS}) =:= false\") :name)")
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;; ── start: audit triple + synchronous first step ───────────
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(epoch 20)
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(eval "(get (erlang-eval-ast \"flow_store:start_link(), flow_store:register_flow(capture, ${CAP}), flow_dispatch:start(trigger_registry:mk_spec(<<116,99>>, capture, undefined, any), ${ACT}, ${AS}, []) =:= {ok, 1, {<<97,99,105,100>>, <<116,99>>, 1}}\") :name)")
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(epoch 21)
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(eval "(get (erlang-eval-ast \"flow_store:start_link(), flow_store:register_flow(capture, ${CAP}), {ok, FlowId, _} = flow_dispatch:start(trigger_registry:mk_spec(<<116,99>>, capture, undefined, any), ${ACT}, ${AS}, []), flow_store:status(FlowId) =:= {ok, {done, create}}\") :name)")
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;; ── unknown flow name -> {error, no_such_flow}, no crash ────
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(epoch 30)
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(eval "(get (erlang-eval-ast \"flow_store:start_link(), flow_dispatch:start(trigger_registry:mk_spec(<<116,99>>, ghostflow, undefined, any), ${ACT}, ${AS}, []) =:= {error, no_such_flow}\") :name)")
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;; ── started instance suspends; resume completes ────────────
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(epoch 40)
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(eval "(get (erlang-eval-ast \"flow_store:start_link(), flow_store:register_flow(wait_flow, ${WAITF}), {ok, FlowId, _} = flow_dispatch:start(trigger_registry:mk_spec(<<116,99>>, wait_flow, undefined, any), ${ACT}, ${AS}, []), S1 = flow_store:status(FlowId), R = flow_store:resume(FlowId, 7), S1 =:= {ok, {suspended, w}} andalso R =:= {ok, {flow_done, {got, 7}}}\") :name)")
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;; ── branch on an activity field (both branches) ────────────
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(epoch 50)
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(eval "(get (erlang-eval-ast \"flow_store:start_link(), flow_store:register_flow(cat_flow, ${CATF}), {ok, FlowId, _} = flow_dispatch:start(trigger_registry:mk_spec(<<116,99>>, cat_flow, undefined, any), ${ACT}, ${AS}, []), flow_store:status(FlowId) =:= {ok, {done, is_note}}\") :name)")
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(epoch 51)
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(eval "(get (erlang-eval-ast \"flow_store:start_link(), flow_store:register_flow(cat_flow, ${CATF}), {ok, FlowId, _} = flow_dispatch:start(trigger_registry:mk_spec(<<116,99>>, cat_flow, undefined, any), [{type, create}, {actor, alice}, {id, <<120>>}, {object, [{type, article}]}], ${AS}, []), flow_store:status(FlowId) =:= {ok, {done, not_note}}\") :name)")
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EPOCHS
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OUTPUT=$(timeout 360 "$SX_SERVER" < "$TMPFILE" 2>/dev/null)
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check() {
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local epoch="$1" desc="$2" expected="$3"
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local actual
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actual=$(echo "$OUTPUT" | awk -v e="$epoch" '
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$0 ~ "^\\(ok-len " e " " { getline; print; exit }
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$0 ~ "^\\(ok " e " " { print; exit }
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$0 ~ "^\\(error " e " " { print; exit }
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')
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[ -z "$actual" ] && actual="<no output for epoch $epoch>"
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if echo "$actual" | grep -qF -- "$expected"; then
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PASS=$((PASS+1))
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[ "$VERBOSE" = "-v" ] && echo " ok $desc"
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else
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FAIL=$((FAIL+1))
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ERRORS+=" FAIL [$desc] (epoch $epoch) expected: $expected | actual: $actual
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"
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fi
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}
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check 3 "flow_dispatch module loaded" "flow_dispatch"
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check 10 "undefined guard + any scope pass" "true"
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check 11 "guard false -> no pass" "true"
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check 12 "guard true on activity field" "true"
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check 13 "actor-scope match passes" "true"
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check 14 "actor-scope mismatch fails" "true"
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check 20 "start returns audit triple" "true"
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check 21 "first step runs synchronously" "true"
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check 30 "unknown flow -> no_such_flow" "true"
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check 40 "started flow suspends + resumes" "true"
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check 50 "branch then-arm (is_note)" "true"
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check 51 "branch else-arm (not_note)" "true"
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TOTAL=$((PASS+FAIL))
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if [ $FAIL -eq 0 ]; then
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echo "ok $PASS/$TOTAL next/tests/flow_dispatch.sh passed"
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else
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echo "FAIL $PASS/$TOTAL passed, $FAIL failed:"
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echo "$ERRORS"
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fi
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[ $FAIL -eq 0 ]
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