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rose-ash/next/tests/backfill_drain.sh
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fed-sx-m2: Step 9c — auto-Accept backfill drain + 6 tests
maybe_auto_accept/3 in http_server.erl now calls maybe_backfill/3
after the Accept publish. Flow:

  inbound Follow{actor: bob, object: alice, backfill: SPEC} lands
    -> pipeline ok -> append_inbox + broadcast (Step 6b)
    -> maybe_auto_accept fires (Step 6c)
       -> publish Accept{actor: alice, object: Follow} (Step 6c)
       -> maybe_backfill (Step 9c)
          -> backfill_enabled cfg gate
          -> :backfill present on Follow
          -> backfill:parse_mode -> Mode
          -> nx_kernel:log_state_for(alice) -> LogState
          -> backfill:slice(Mode, LogState, true) -> [Wrapped]
          -> deliver_backfill(bob, Slice):
               whereis(bob) cfg gate (peer worker registered)
               -> delivery_worker:enqueue(bob, A) for each

Cfg surface:
  {backfill_enabled, true}     gate the drain (default off)
  {auto_accept_follows, true}  Step 6c gate (required)

Each backfilled entry carries {backfilled, true} (per design §13.3,
:id preserved so the receiver's replay defence still catches the
forward-going copy).

6/6 in next/tests/backfill_drain.sh:
  - Follow with {backfill, {last_n, 2}} + 3 pre-published notes
    -> bob's delivery_worker has exactly 2 pending entries
  - Each entry carries {backfilled, true}
  - :backfill_enabled absent -> no drain (back-compat)
  - Follow without :backfill field -> no drain
  - Missing peer worker (no whereis) -> silently skipped + 202

Step 9 fully closed (9a slicing + 9b ?since route + 9c
Accept-drain). The live HTTP dispatch of the queued entries
still gates on Blockers #2 (httpc).
2026-06-07 07:01:55 +00:00

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Executable File

#!/usr/bin/env bash
# next/tests/backfill_drain.sh — m2 Step 9c test.
#
# Auto-Accept on Follow ingestion can now also drain the receiving
# actor's outbox into the new follower's delivery_worker queue per
# the Follow's :backfill spec. Gated by Cfg :backfill_enabled.
set -uo pipefail
cd "$(git rev-parse --show-toplevel)"
SX_SERVER="${SX_SERVER:-hosts/ocaml/_build/default/bin/sx_server.exe}"
if [ ! -x "$SX_SERVER" ]; then
SX_SERVER="/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe"
fi
if [ ! -x "$SX_SERVER" ]; then
echo "ERROR: sx_server.exe not found." >&2
exit 1
fi
VERBOSE="${1:-}"
PASS=0; FAIL=0; ERRORS=""
TMPFILE=$(mktemp); trap "rm -f $TMPFILE" EXIT
# Alice is the target (on this kernel). Bob is the peer publishing the
# Follow. Three notes pre-published to alice's outbox before bob's
# Follow lands; the Follow asks for last_n=2 backfill.
SETUP='AK = <<1,2,3,4>>, AKS = [{key_id,k1},{algorithm,ed25519},{value,AK}], AAS = [{public_keys,[[{id,k1},{created,0},{value,AK}]]}], BK = <<5,6,7,8>>, BKS = [{key_id,k1},{algorithm,ed25519},{value,BK}], BAS = [{public_keys,[[{id,k1},{created,0},{value,BK}]]}], FollowReq = [{type, follow}, {object, alice}], FollowReqBF = [{type, follow}, {object, alice}, {backfill, {last_n, 2}}], FollowEnvBF = outbox:construct(follow, bob, 1, alice), FollowSignedNoBF = outbox:sign(FollowEnvBF, BKS), FollowSignedBF = outbox:sign(FollowEnvBF ++ [{backfill, {last_n, 2}}], BKS), BodyBF = term_codec:encode(FollowSignedBF), BodyNoBF = term_codec:encode(FollowSignedNoBF), nx_kernel:start_link(alice, AKS, AAS), delivery_worker:start_link(bob), InboxPath = <<47,97,99,116,111,114,115,47,97,108,105,99,101,47,105,110,98,111,120>>,'
cat > "$TMPFILE" <<EPOCHS
(epoch 1)
(load "lib/erlang/tokenizer.sx")
(load "lib/erlang/parser.sx")
(load "lib/erlang/parser-core.sx")
(load "lib/erlang/parser-expr.sx")
(load "lib/erlang/parser-module.sx")
(load "lib/erlang/transpile.sx")
(load "lib/erlang/runtime.sx")
(load "lib/erlang/vm/dispatcher.sx")
(epoch 2)
(eval "(er-load-gen-server!)")
(epoch 3)
(eval "(get (erlang-load-module (file-read \"next/kernel/envelope.erl\")) :name)")
(epoch 4)
(eval "(get (erlang-load-module (file-read \"next/kernel/log.erl\")) :name)")
(epoch 5)
(eval "(get (erlang-load-module (file-read \"next/kernel/pipeline.erl\")) :name)")
(epoch 6)
(eval "(get (erlang-load-module (file-read \"next/kernel/follower_graph.erl\")) :name)")
(epoch 7)
(eval "(get (erlang-load-module (file-read \"next/kernel/delivery.erl\")) :name)")
(epoch 8)
(eval "(get (erlang-load-module (file-read \"next/kernel/backfill.erl\")) :name)")
(epoch 9)
(eval "(get (erlang-load-module (file-read \"next/kernel/delivery_worker.erl\")) :name)")
(epoch 10)
(eval "(get (erlang-load-module (file-read \"next/kernel/outbox.erl\")) :name)")
(epoch 11)
(eval "(get (erlang-load-module (file-read \"next/kernel/nx_kernel.erl\")) :name)")
(epoch 12)
(eval "(get (erlang-load-module (file-read \"next/kernel/term_codec.erl\")) :name)")
(epoch 13)
(eval "(get (erlang-load-module (file-read \"next/kernel/http_server.erl\")) :name)")
;; backfill_enabled + Follow with :backfill last_n=2 + 3 pre-published
;; notes -> bob's delivery_worker has 2 pending entries after Follow lands
(epoch 20)
(eval "(get (erlang-eval-ast \"${SETUP} N1 = [{type, note}, {object, [{content, hi1}]}], N2 = [{type, note}, {object, [{content, hi2}]}], N3 = [{type, note}, {object, [{content, hi3}]}], nx_kernel:publish_to(alice, N1), nx_kernel:publish_to(alice, N2), nx_kernel:publish_to(alice, N3), Cfg = [{peer_as, [{bob, BAS}]}, {kernel, nx_kernel}, {auto_accept_follows, true}, {backfill_enabled, true}], Req = [{method, <<80,79,83,84>>}, {path, InboxPath}, {headers, []}, {body, BodyBF}], http_server:route(Req, Cfg), length(delivery_worker:pending_srv(bob)) =:= 2\") :name)")
;; Each backfilled entry carries {backfilled, true}
(epoch 21)
(eval "(get (erlang-eval-ast \"${SETUP} N1 = [{type, note}, {object, [{content, hi}]}], nx_kernel:publish_to(alice, N1), Cfg = [{peer_as, [{bob, BAS}]}, {kernel, nx_kernel}, {auto_accept_follows, true}, {backfill_enabled, true}], Req = [{method, <<80,79,83,84>>}, {path, InboxPath}, {headers, []}, {body, BodyBF}], http_server:route(Req, Cfg), [E | _] = delivery_worker:pending_srv(bob), envelope:get_field(backfilled, E) =:= {ok, true}\") :name)")
;; No :backfill_enabled flag -> no backfill drain even with :backfill in Follow
(epoch 22)
(eval "(get (erlang-eval-ast \"${SETUP} N1 = [{type, note}, {object, [{content, hi}]}], nx_kernel:publish_to(alice, N1), Cfg = [{peer_as, [{bob, BAS}]}, {kernel, nx_kernel}, {auto_accept_follows, true}], Req = [{method, <<80,79,83,84>>}, {path, InboxPath}, {headers, []}, {body, BodyBF}], http_server:route(Req, Cfg), delivery_worker:pending_srv(bob) =:= []\") :name)")
;; Follow without :backfill field -> no backfill drain (even with the flag)
(epoch 23)
(eval "(get (erlang-eval-ast \"${SETUP} N1 = [{type, note}, {object, [{content, hi}]}], nx_kernel:publish_to(alice, N1), Cfg = [{peer_as, [{bob, BAS}]}, {kernel, nx_kernel}, {auto_accept_follows, true}, {backfill_enabled, true}], Req = [{method, <<80,79,83,84>>}, {path, InboxPath}, {headers, []}, {body, BodyNoBF}], http_server:route(Req, Cfg), delivery_worker:pending_srv(bob) =:= []\") :name)")
;; Missing delivery_worker for the peer -> silently skipped (no enqueue, no crash)
(epoch 24)
(eval "(get (erlang-eval-ast \"AK = <<1,2,3,4>>, AKS = [{key_id,k1},{algorithm,ed25519},{value,AK}], AAS = [{public_keys,[[{id,k1},{created,0},{value,AK}]]}], BK = <<5,6,7,8>>, BKS = [{key_id,k1},{algorithm,ed25519},{value,BK}], BAS = [{public_keys,[[{id,k1},{created,0},{value,BK}]]}], nx_kernel:start_link(alice, AKS, AAS), FollowEnvBF = outbox:construct(follow, bob, 1, alice), FollowSignedBF = outbox:sign(FollowEnvBF ++ [{backfill, {last_n, 2}}], BKS), BodyBF = term_codec:encode(FollowSignedBF), N1 = [{type, note}, {object, [{content, hi}]}], nx_kernel:publish_to(alice, N1), Cfg = [{peer_as, [{bob, BAS}]}, {kernel, nx_kernel}, {auto_accept_follows, true}, {backfill_enabled, true}], InboxPath = <<47,97,99,116,111,114,115,47,97,108,105,99,101,47,105,110,98,111,120>>, Req = [{method, <<80,79,83,84>>}, {path, InboxPath}, {headers, []}, {body, BodyBF}], case http_server:route(Req, Cfg) of [{status, 202}, _, _] -> true; _ -> false end\") :name)")
EPOCHS
OUTPUT=$(timeout 900 "$SX_SERVER" < "$TMPFILE" 2>/dev/null)
check() {
local epoch="$1" desc="$2" expected="$3"
local actual
actual=$(echo "$OUTPUT" | awk -v e="$epoch" '
$0 ~ "^\\(ok-len " e " " { getline; print; exit }
$0 ~ "^\\(ok " e " " { print; exit }
$0 ~ "^\\(error " e " " { print; exit }
')
[ -z "$actual" ] && actual="<no output for epoch $epoch>"
if echo "$actual" | grep -qF -- "$expected"; then
PASS=$((PASS+1))
[ "$VERBOSE" = "-v" ] && echo " ok $desc"
else
FAIL=$((FAIL+1))
ERRORS+=" FAIL [$desc] (epoch $epoch) expected: $expected | actual: $actual
"
fi
}
check 13 "http_server loaded" "http_server"
check 20 "Follow w/ backfill -> 2 enqueued" "true"
check 21 "backfilled marker on entries" "true"
check 22 "no flag -> no backfill" "true"
check 23 "no :backfill field -> no drain" "true"
check 24 "missing worker -> 202 (skip)" "true"
TOTAL=$((PASS+FAIL))
if [ $FAIL -eq 0 ]; then
echo "ok $PASS/$TOTAL next/tests/backfill_drain.sh passed"
else
echo "FAIL $PASS/$TOTAL passed, $FAIL failed:"
echo "$ERRORS"
fi
[ $FAIL -eq 0 ]