jakman85andClaude Opus 5
cd64b4b672
Completes the WIP preserved in the previous commit. `MERGE GATE: PASS` + exit 0 now means
what it says: every stage that was SUPPOSED to run ran, and was green.
THE DEFECT. In gate.sh's decision section a FAILED stage set BLOCK=1 but a SKIPPED stage only
warned, so the gate printed `l0: skipped (unwired seam / missing tool) — not green` and then
`MERGE GATE: PASS`, exit 0. Seen twice for real: `prom-rules` skipped because promtool was
absent, and `l0` skipped because the pinned kyverno CLI was. Exit 0 is what CI and every
`||`-chained script read as merge-approved, so the one component whose entire job is to fail
closed was failing OPEN — in a repo whose stated principle is that SKIPPED IS NOT GREEN, and
whose history already contains the 2026-08-31 "local false green" that UNDECIDED was added to
prevent. The offline stages simply never used that vocabulary.
A SKIP IS NOT ONE THING — the per-stage rule, with the justification in the file header:
* lint / l0 / render-golden / l1 — COULD NOT RUN (a pinned tool absent, a seam unwired).
BLOCKED under strict skips (a CI runner has the toolchain installed for it by
install-tools.sh, so a skip there is a defect); UNDETERMINED (exit 3) otherwise — a
workstation missing a tool is a real local condition, still non-zero, still never a pass.
* spec-immutability — the spec repo is not checked out, so R-TEST-06 COULD NOT BE VERIFIED:
UNDETERMINED. Deliberately NOT upgraded to a block by strictness, because the live runner
does not check the spec repo out at all and blocking would leave the only enforced status
check permanently red for a reason no PR can clear. It is the ONE skip a caller may
knowingly tolerate; REQUIRE_SPEC_VERIFICATION=true makes it hard once wired.
* conformance L2/L3 — CLUSTER_AVAILABLE!=true is the environment DECLARING the capability
absent, not a stage failing to run where it could have. A declared-inapplicable stage was
never "supposed to run", so it does not deny a PASS — but it is now NAMED in the PASS
headline and the step summary, so PASS never implies more than was verified. A skip
DESPITE CLUSTER_AVAILABLE=true still blocks.
declared-not-applicable may pass; could-not-run may not.
STRICTNESS IS DECLARED, NOT SNIFFED. .gitea/workflows/gate.yml sets GATE_STRICT_SKIPS=true on
the gate step — the workflow is the thing that knows it is CI — with GITHUB_ACTIONS/CI (set by
the runner itself) only as the `auto` fallback. No hostname/path/tool-availability heuristic.
A wrong answer in either direction cannot fail open: both branches are non-zero and neither is
a PASS. That step now calls ./ci/gate.sh directly and tolerates exit 3 in one visible line,
because under strict skips exit 3 can ONLY mean the unverifiable spec repo — a missing tool is
exit 1 and untolerated. Tolerating a non-answer is a reviewed choice in the CALLER; there is
deliberately no knob inside gate.sh that turns UNDETERMINED into exit 0.
ALSO, from the unlanded fix/touched-requirements-fail-closed (47068ee), whose reasoning is
carried over rather than its tree: gate.sh special-cased only exit 3 from
touched-requirements.sh, so ANY other non-zero exit left the touched set empty and printed PASS
having applied no coverage gate at all. An unusable subset is not an empty subset: it BLOCKS.
Latent today (the script exits only 0 or 3) and wired now so the hole is already closed when a
fail-closed path map makes exit 1 reachable — the measured state of that map is in the PM report.
TESTED — ci/tests/gate-decision.test.sh, 47 assertions over the whole decision table: the real
gate.sh and lib.sh run in a throwaway CI_DIR against STUB stage scripts whose exit codes the
suite dictates, so it asserts how the gate REASONS, with no tools, no cluster, no network. All
stages green -> PASS/0; each stage FAILED -> BLOCKED/1; each stage SKIPPED -> never PASS and
non-zero; strict skips -> BLOCKED/1; the spec exception; the declared-gap PASS; the
undetermined-touched-subset paths unchanged (on-base -> NOT APPLICABLE/0, no-base and
diff-failed -> BLOCKED/1); UNDETERMINED outranking NOT APPLICABLE; an unusable subset ->
BLOCKED/1; truthy()'s misspelling direction. 32 of the 47 FAIL against the pre-change gate,
including "l0 SKIPPED: printed 'MERGE GATE: PASS'" — the suite is falsifiable, not decorative.
lib.sh: truthy() is now the one spelling of "is this switch on" and cluster_available() uses it
(the comment claimed that; now it is true), and load_touched_requirements' rc!=0 branch says
what actually happened instead of "proceeding with the full layer".
Refs R-TEST-02, R-TEST-03, R-TEST-06.
Co-Authored-By: Claude Opus 5 <[email protected]>
309 lines
17 KiB
Bash
Executable File
309 lines
17 KiB
Bash
Executable File
#!/usr/bin/env bash
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# ci/gate.sh — the merge-gate decision. Runs every stage in order and applies the
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# R-TEST-03 rule: a merge is allowed only when the touched-requirement subset is
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# GREEN. Honestly distinguishes three outcomes per stage:
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# pass (0) green
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# fail (1) BLOCKS the merge
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# skip (3) not run (cluster-gated stage w/ no cluster, or unwired seam) —
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# NOT counted as green (HARD RULE 4: don't fake green)
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#
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# ...AND THREE OUTCOMES FOR THE GATE ITSELF (2026-09-13). Until today a stage that
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# SKIPPED only printed a warning ("— not green") and the gate then printed
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# `MERGE GATE: PASS` and exited 0 anyway. That is fail-open in the one component whose
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# entire job is to fail closed: a pinned tool missing from the runner, or a seam silently
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# becoming unwired, produced exit 0 and read as merge-approved. Observed live:
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# `prom-rules: skipped (missing tool) — not green` followed by `MERGE GATE: PASS`, and
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# `l0: skipped (kyverno CLI not installed)` likewise. The gate's own vocabulary already
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# had the answer — the 2026-08-31 "local false green" introduced UNDECIDED for exactly
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# this shape of non-answer — the offline stages just did not use it.
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#
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# MERGE GATE: PASS exit 0 every stage that was SUPPOSED TO RUN ran and was
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# green, and the R-TEST-03 subset was checked.
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# MERGE GATE: BLOCKED exit 1 a stage FAILED, or a stage did not run WHERE IT
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# MUST (see the per-stage rules below), or the
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# decision input is unusable.
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# MERGE GATE: UNDETERMINED exit 3 nothing failed, but a stage did not run, so
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# greenness was NOT ESTABLISHED. Never a pass;
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# non-zero so no automation can read it as approval.
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# `3` is this repo's existing "not run / not
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# established" code (ci/lib.sh), now spoken by the
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# gate as a whole and not only by its stages.
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# MERGE GATE: NOT APPLICABLE exit 0 there is no branch under gate at all (HEAD is on
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# base) — a push-to-main CI run. Stages were green;
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# no subset was checked, and the headline says so.
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#
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# NOTE ON `make`: GNU make reports ANY recipe failure as its own exit 2, so
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# `make -C ci gate` collapses 1 and 3 into 2 — a human sees the headline and that is enough.
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# A caller that must tell BLOCKED from UNDETERMINED invokes ./ci/gate.sh directly; to tolerate
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# an UNDETERMINED run it writes `./ci/gate.sh || [ $? -eq 3 ]`, the same explicit idiom
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# .gitea/workflows/gate.yml already used for its spec-immutability pre-step and now uses for
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# the gate itself (with GATE_STRICT_SKIPS=true, so that tolerance can ONLY ever cover the
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# declared-environmental skip below — a missing tool on the runner is exit 1, untolerated).
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# TOLERATING A NON-ANSWER IS A VISIBLE, REVIEWED CHOICE IN THE CALLER. There is deliberately no
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# knob inside this script that turns UNDETERMINED into exit 0: that would be the fail-open this
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# change exists to remove, just relocated.
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#
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# WHICH SKIPS BLOCK, AND WHY (per stage — a skip is not one thing):
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#
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# lint / l0 / render-golden / l1 A skip here means a PINNED tool is absent or a wired
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# seam went unwired. On a CI runner the pinned toolchain is installed for us by
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# .gitea/workflows/scripts/install-tools.sh, so a skip there is a DEFECT, not an
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# environment: it BLOCKS. On a workstation a missing tool is a real local condition, so
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# it degrades to UNDETERMINED (still non-zero, still never a pass). See strict_skips()
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# in ci/lib.sh for how CI is detected and why misdetecting it cannot fail open.
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#
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# spec-immutability (R-TEST-06) A skip means the sibling spec repo is not checked out, so
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# the spec COULD NOT BE VERIFIED. Never a pass — unverified is unverified — so it denies a
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# PASS and yields UNDETERMINED. It is deliberately NOT upgraded to BLOCKED by CI strictness,
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# because on the live runner it is not a defect anyone can fix from inside this repo: the
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# workflow does not check the spec repo out at all (SPEC_REPO_SLUG is unwired — the blueprint
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# lives in merge-gate.yaml), and blocking would leave the only enforced status check
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# permanently red for a reason no PR could clear. So THIS is the one skip whose non-answer the
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# CALLER may knowingly tolerate, and gate.yml does so in one visible line. Locally the
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# remedy exists and the message names it: check the spec repo out beside this one, or point
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# SPEC_REPO at it (infra/devcontainer/dev.sh mounts it automatically when it is a sibling).
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# Set REQUIRE_SPEC_VERIFICATION=true (the counterpart of REQUIRE_CLUSTER_TESTS) to make it a
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# hard block once that checkout is wired.
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#
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# conformance (L2/L3) A skip when CLUSTER_AVAILABLE!=true is NOT a defect and
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# NOT an accident: it is the environment DECLARING that the capability is absent, which
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# is the documented Phase-0 behaviour. A declared-inapplicable stage was never "supposed
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# to run", so it does not deny a PASS — the touched requirements it would have covered
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# are still reported UNVERIFIED, and REQUIRE_CLUSTER_TESTS=true (Phase 1+) turns that
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# into a block. A skip DESPITE CLUSTER_AVAILABLE=true is a defect and blocks, exactly as
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# it already did. That asymmetry is the whole distinction this file now draws:
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# DECLARED-not-applicable may pass; COULD-NOT-RUN may not. A declared gap is still NAMED in
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# the PASS headline (see DECLARED_GAPS below), so a PASS never reads as "everything was
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# verified" when a layer was declared out of scope.
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#
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# Phase 0 policy (no cluster): L0/L1 stages (lint, schema, kyverno, L1 render)
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# MUST be green. L2/L3 SKIP. If the touched subset needs L2/L3 and no cluster is
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# available, the gate reports those requirements UNVERIFIED and — unless
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# REQUIRE_CLUSTER_TESTS=true — does not hard-block Phase-0 bootstrap work, while
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# making the gap loud. Set REQUIRE_CLUSTER_TESTS=true (Phase 1+) to make any
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# skipped, cluster-needing touched requirement a hard block.
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set -uo pipefail # NOTE: no -e; we want to run all stages and aggregate.
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CI_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck disable=SC1091
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source "${CI_DIR}/lib.sh"
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set +e # lib.sh enables -e; the gate must run ALL stages and aggregate, not abort.
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: "${REQUIRE_CLUSTER_TESTS:=false}"
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: "${REQUIRE_SPEC_VERIFICATION:=false}"
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declare -A OUTCOME
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run_stage() {
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local name="$1"; shift
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log "==== stage: ${name} ===="
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"$@"
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local rc=$?
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case "$rc" in
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0) OUTCOME[$name]="pass"; ok "stage ${name}: pass" ;;
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3) OUTCOME[$name]="skip"; skip "stage ${name}: SKIPPED (not run)" ;;
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*) OUTCOME[$name]="fail"; err "stage ${name}: FAIL" ;;
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esac
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}
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summary "## Merge gate (R-TEST-03)"
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summary ""
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run_stage spec-immutability "${CI_DIR}/spec-immutability.sh"
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run_stage lint "${CI_DIR}/lint.sh"
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run_stage l0 "${CI_DIR}/l0.sh"
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run_stage render-golden "${CI_DIR}/render-golden.sh"
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run_stage l1 "${CI_DIR}/l1.sh"
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run_stage conformance "${CI_DIR}/conformance.sh"
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echo >&2
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log "==== gate decision ===="
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BLOCK=0
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# Stages that did NOT run and are tolerated here — but never as green. A non-empty list
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# means the gate could not establish greenness -> MERGE GATE: UNDETERMINED, exit 3.
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NOT_ESTABLISHED=()
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# Stages the environment DECLARED inapplicable (today: L2/L3 with no cluster declared). These
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# do not deny a PASS — nothing was supposed to run — but they are named IN the PASS headline, so
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# "PASS" is never mistaken for "everything was verified".
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DECLARED_GAPS=()
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# --- R-TEST-03 input: the touched-requirement subset --------------------------
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# Computed ONCE here. ci/touched-requirements.sh exits 3 when it cannot establish a
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# reliable diff base; that used to degrade to an empty set, which silently disabled the
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# coverage `--require` gate and let the gate print "MERGE GATE: PASS" having checked
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# nothing (the 2026-08-31 local false green). An undeterminable subset is now surfaced
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# as an UNDECIDED merge decision, never as a pass.
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_reason_file="$(mktemp)"
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# NOTE: command substitution, NOT `mapfile < <(...)` — process substitution does not
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# propagate the child's exit status, and the whole point here is to SEE the exit 3.
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TOUCHED_OUT="$(TOUCHED_REASON_FILE="$_reason_file" "${CI_DIR}/touched-requirements.sh")"
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TOUCHED_RC=$?
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TOUCHED_REASON="$(cat "$_reason_file" 2>/dev/null || true)"
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rm -f "$_reason_file"
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TOUCHED=()
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[ -n "$TOUCHED_OUT" ] && mapfile -t TOUCHED <<< "$TOUCHED_OUT"
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UNDECIDED=0
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SUBSET_BROKEN=0
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if [ "$TOUCHED_RC" -eq 3 ]; then
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UNDECIDED=1
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echo >&2
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err "R-TEST-03 DECISION INPUT MISSING: the touched-requirement subset could not be"
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err " determined (${TOUCHED_REASON:-unknown}). The scoped coverage gate did NOT run."
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summary "- **R-TEST-03 subset UNDETERMINED** (\`${TOUCHED_REASON:-unknown}\`) — the scoped coverage gate did not run."
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elif [ "$TOUCHED_RC" -ne 0 ]; then
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# Any OTHER non-zero exit is a hard defect in the subset computation itself — an
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# incomplete path->requirement map (a changed path matches no row) or an invalid row
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# would report exactly this. The reasoning is taken from the unlanded
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# fix/touched-requirements-fail-closed (47068ee): gate.sh special-cased ONLY exit 3, so
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# any other non-zero exit left TOUCHED empty and UNDECIDED=0, and the decision below
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# printed "MERGE GATE: PASS" having applied no coverage gate at all. Unreachable on
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# `main` today (touched-requirements.sh exits only 0 or 3) and wired here so it is
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# already closed the moment a fail-closed path map makes exit 1 reachable. A subset that
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# cannot be computed is NOT an empty subset.
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SUBSET_BROKEN=1
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echo >&2
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err "R-TEST-03 DECISION INPUT BROKEN: touched-requirements.sh exited ${TOUCHED_RC}"
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err " (${TOUCHED_REASON:-unknown}). Its output above names the paths/rows to fix."
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summary "- **R-TEST-03 subset UNUSABLE** (\`${TOUCHED_REASON:-unknown}\`, exit ${TOUCHED_RC}) — the coverage gate could not be applied."
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elif [ "${#TOUCHED[@]}" -gt 0 ]; then
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log "touched requirements: ${TOUCHED[*]}"
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fi
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# spec-immutability (R-TEST-06): a FAIL always blocks (the spec was modified/drifted).
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# A skip means the spec repo wasn't available to verify — UNVERIFIED, never green: it
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# denies a PASS (exit 3) and, with REQUIRE_SPEC_VERIFICATION=true, blocks outright. See the
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# file header for why this one is not upgraded to a block by CI detection alone.
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case "${OUTCOME[spec-immutability]}" in
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fail) err "spec-immutability: FAILED -> blocks merge (R-TEST-06)"; BLOCK=1 ;;
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skip)
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if truthy "$REQUIRE_SPEC_VERIFICATION"; then
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err "spec-immutability: skipped (spec repo unavailable) and REQUIRE_SPEC_VERIFICATION=true -> blocks merge"
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summary "- spec-immutability: **SKIPPED** (spec repo unavailable) — blocks merge (REQUIRE_SPEC_VERIFICATION=true)"
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BLOCK=1
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else
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warn "spec-immutability: skipped (spec repo unavailable) — R-TEST-06 NOT VERIFIED, so"
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warn " this run cannot be a PASS. Check the spec repo out beside this one (or set"
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warn " SPEC_REPO) to verify it."
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summary "- spec-immutability: **SKIPPED** (spec repo unavailable — R-TEST-06 not verified; not a pass)"
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NOT_ESTABLISHED+=("spec-immutability")
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fi ;;
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pass) ok "spec-immutability: green" ;;
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esac
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# L0/L1 stages: any failure blocks. A SKIP here means a pinned tool is missing or a seam is
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# unwired — NEVER green. In CI (strict) that is a defect and blocks; on a workstation it
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# degrades to UNDETERMINED, which is still non-zero and still not a pass. render-golden is a
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# no-cluster reproducibility gate (canonical render == committed apps/ goldens):
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# a FAIL means a golden drifted from its ServiceDefinition source — always blocks.
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for s in lint l0 render-golden l1; do
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case "${OUTCOME[$s]}" in
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fail) err "${s}: FAILED -> blocks merge"; BLOCK=1 ;;
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skip)
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if strict_skips; then
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err "${s}: skipped (unwired seam / missing tool) under STRICT skips, where the pinned"
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err " toolchain is installed for us (.gitea/workflows/scripts/install-tools.sh) and every"
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err " seam is on main — so this is a DEFECT, not an environment -> blocks merge"
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summary "- ${s}: **SKIPPED under strict skips** (unwired seam / missing tool) — blocks merge"
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BLOCK=1
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else
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warn "${s}: skipped (unwired seam / missing tool) — not green, so this run cannot be a PASS"
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summary "- ${s}: **SKIPPED** (unwired seam / missing tool) — not green"
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NOT_ESTABLISHED+=("$s")
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fi ;;
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pass) ok "${s}: green" ;;
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esac
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done
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# L2/L3 conformance: cluster-gated. The ONLY stage whose non-execution can still be a PASS,
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# because CLUSTER_AVAILABLE!=true is the environment DECLARING the capability absent rather
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# than the stage failing to run where it could have — see the file header.
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case "${OUTCOME[conformance]}" in
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fail)
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err "conformance (L2/L3): FAILED -> blocks merge"; BLOCK=1 ;;
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pass)
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ok "conformance (L2/L3): green" ;;
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skip)
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if cluster_available; then
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err "conformance: skipped despite CLUSTER_AVAILABLE=true -> blocks merge"; BLOCK=1
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elif [ "$UNDECIDED" -eq 1 ]; then
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warn "conformance L2/L3 UNVERIFIED, and the touched subset is unknown — nothing certified."
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DECLARED_GAPS+=("conformance-l2-l3(no cluster declared)")
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else
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if [ "${#TOUCHED[@]}" -gt 0 ]; then
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reqs=("${TOUCHED[@]}")
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warn "conformance L2/L3 UNVERIFIED for touched requirements: ${reqs[*]}"
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warn " (no cluster — Phase 0). These are NOT certified green."
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summary "- **UNVERIFIED (no cluster):** ${reqs[*]}"
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if truthy "$REQUIRE_CLUSTER_TESTS"; then
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err "REQUIRE_CLUSTER_TESTS=true and cluster-needing requirements are unverified -> blocks merge"
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BLOCK=1
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else
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DECLARED_GAPS+=("conformance-l2-l3(no cluster declared; ${#TOUCHED[@]} touched reqs unverified)")
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fi
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else
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skip "conformance L2/L3 skipped; no cluster-needing requirements touched"
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DECLARED_GAPS+=("conformance-l2-l3(no cluster declared)")
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fi
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fi ;;
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esac
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# An UNDECIDED subset is never a pass. Two outcomes, by reason:
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# on-base -> this checkout has no branch commits to gate (you are on main, or the
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# branch is already merged; a push-to-main CI run lands here). Legitimate,
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# so the job is not failed — but the headline says NOT APPLICABLE, never
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# PASS, so nobody reads it as "my branch is green".
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# anything -> the environment cannot support a merge decision (no base ref, broken
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# else diff). Refusing to decide must not look like deciding yes: BLOCK.
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if [ "$UNDECIDED" -eq 1 ] && [ "$TOUCHED_REASON" != "on-base" ]; then
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err "cannot compute the R-TEST-03 subset (${TOUCHED_REASON:-unknown}) -> blocks merge"
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BLOCK=1
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fi
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# An incomplete/invalid path map is not an environment problem to skip past: the change under
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# gate contains paths whose requirements are UNKNOWN, so no subset can be certified.
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if [ "$SUBSET_BROKEN" -eq 1 ]; then
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err "R-TEST-03 subset unusable (${TOUCHED_REASON:-unknown}) -> blocks merge"
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BLOCK=1
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fi
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echo >&2
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# Precedence: BLOCKED (something is wrong) > UNDETERMINED (a stage did not run, so
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# greenness was not established) > NOT APPLICABLE (nothing to gate) > PASS. UNDETERMINED
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# outranks NOT APPLICABLE because "no branch under gate" AND "a stage did not run" is two
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# reasons this is not a green run, and the stronger, non-zero one must be the headline.
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if [ "$BLOCK" -ne 0 ]; then
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err "MERGE GATE: BLOCKED"
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summary ""
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summary "**Result: BLOCKED** — see failures above."
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exit 1
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elif [ "${#NOT_ESTABLISHED[@]}" -gt 0 ]; then
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err "MERGE GATE: UNDETERMINED — greenness was NOT ESTABLISHED."
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err " Stages that did not run: ${NOT_ESTABLISHED[*]}"
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err " Nothing FAILED, and nothing is certified either: a stage that did not run is not"
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err " green (HARD RULE 4). This is exit 3, never 0 — no automation may read it as"
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err " merge-approved. Fix the environment (install the pinned tool / wire the seam /"
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err " check out the spec repo) and run again, or accept it KNOWINGLY and explicitly:"
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err " ./ci/gate.sh || [ \$? -eq 3 ]"
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summary ""
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summary "**Result: UNDETERMINED** — these stages did not run, so nothing is certified: \`${NOT_ESTABLISHED[*]}\`. Not a pass (exit 3)."
|
|
exit 3
|
|
elif [ "$UNDECIDED" -eq 1 ]; then
|
|
warn "MERGE GATE: NOT APPLICABLE — no branch under gate (${TOUCHED_REASON})."
|
|
warn " The stages above ran and did not fail, but NO touched-requirement subset was"
|
|
warn " checked. This is NOT a green branch: check out the branch you mean to gate"
|
|
warn " (or set BASE_REF) and run it again."
|
|
summary ""
|
|
summary "**Result: NOT APPLICABLE** — no branch under gate (\`${TOUCHED_REASON}\`); the R-TEST-03 subset was not checked."
|
|
exit 0
|
|
else
|
|
ok "MERGE GATE: PASS — every stage that was supposed to run RAN and was GREEN, and the"
|
|
ok " R-TEST-03 touched-requirement subset was checked."
|
|
if [ "${#DECLARED_GAPS[@]}" -gt 0 ]; then
|
|
ok " NOT verified here, because the environment DECLARED it out of scope (never a silent"
|
|
ok " gap — Phase 0 by policy, see the header): ${DECLARED_GAPS[*]}"
|
|
summary ""
|
|
summary "**Result: PASS** — every stage that was supposed to run ran green. Declared out of scope (NOT verified): \`${DECLARED_GAPS[*]}\`."
|
|
else
|
|
summary ""
|
|
summary "**Result: PASS** — every stage that was supposed to run ran green; nothing was declared out of scope."
|
|
fi
|
|
exit 0
|
|
fi
|