fix(resource-value-verification): close bug-1579 for real via xce_test's ! shell-escape
Previously worked around (task 6.2) by removing the one host-attrs resource (cpuf) from the default set - a custom resource=value arg using any host-attrs name would still false-mismatch at the controller layer, since inject_resources() disconnected the worker before the separate controller- check session ran, and the controller resets host-attrs resources on disconnect. Real fix: xce_test's `!<shell-command>` escape is handled in the single top-level REPL loop before context-specific dispatch, so it works in any context - including worker mode - without calling leave_ctx()/disconnecting. inject_resources() now shells out via `!` to run the controller check in-line, between resupdate and quit, while the worker's connection is still open. query_controller_resvals()'s comparison logic is unchanged - this is a pure sequencing fix. cpuf restored to DEFAULT_RESOURCE_ARGS as live proof. Live-verified: cpuf now MATCHes at the controller layer (was always a false MISMATCH before); adversarial shell-injection attempt via a malicious resource name confirmed safe (printf %q quoting); SIGTERM delivered exactly during the nested check confirmed zero orphaned/zombie processes across 4 independent runs. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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2 changed files with 234 additions and 81 deletions
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@ -5,21 +5,31 @@
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# resource value via xce_test's resupdate, confirm it is visible at the
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# controller, live scheduler, and Go apiserver).
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#
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# resource-value-verification spec, task 5.1+6.1+6.2+6.3 SCOPE: this file
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# currently implements deployment (task 5.1), worker join + resource
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# injection (task 6.1), the controller-side per-layer verification check
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# (task 6.2), AND the scheduler-side per-layer verification check (task 6.3)
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# -- stand up a fresh controller + scheduler (-vvv) + apiserver (debug
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# logging) deployment via xce-deploy-ha's deploy-ha.sh + generated
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# start-all.sh, confirm all three components are actually up, join a
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# SYNTHETIC worker (no real worker daemon process) through xce_test's worker
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# context, run resupdate for one or more resource=value pairs, then (a) query
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# the controller (xce_test client-context `resval`) for every ACCEPTED pair
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# and report MATCH/MISMATCH against the injected value, and (b) poll the live
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# scheduler daemon's own log file (task 4.1's trace line) for the same
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# ACCEPTED pairs, within a bounded wait, and report MATCH/MISMATCH/
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# UNREACHABLE distinctly from the controller-side result, then clean up
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# (trap-based, covering a mid-deployment abort, not just a completed run).
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# resource-value-verification spec, task 5.1+6.1+6.2+6.3 SCOPE (+ bug-1579
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# follow-up fix): this file currently implements deployment (task 5.1),
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# worker join + resource injection (task 6.1), the controller-side per-layer
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# verification check (task 6.2), AND the scheduler-side per-layer
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# verification check (task 6.3) -- stand up a fresh controller + scheduler
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# (-vvv) + apiserver (debug logging) deployment via xce-deploy-ha's
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# deploy-ha.sh + generated start-all.sh, confirm all three components are
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# actually up, join a SYNTHETIC worker (no real worker daemon process)
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# through xce_test's worker context, run resupdate for one or more
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# resource=value pairs, then (a) query the controller (xce_test
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# client-context `resval`) for every ACCEPTED pair and report
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# MATCH/MISMATCH against the injected value, and (b) poll the live scheduler
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# daemon's own log file (task 4.1's trace line) for the same ACCEPTED pairs,
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# within a bounded wait, and report MATCH/MISMATCH/UNREACHABLE distinctly
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# from the controller-side result, then clean up (trap-based, covering a
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# mid-deployment abort, not just a completed run).
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#
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# bug-1579 follow-up fix (this revision): the controller-side check (a) above
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# now runs NESTED inside inject_resources()'s own xce_test worker session --
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# via a `!` shell-escape line placed between `resupdate` and `quit` -- rather
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# than as a wholly separate xce_test process run AFTER that session's own
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# `quit` has already disconnected the synthetic worker. See the
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# internal_controller_check() function and the top-of-file bug-1579 note
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# below for why this matters and exactly how it works; DEFAULT_RESOURCE_ARGS
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# now includes `cpuf` again as proof the fix is real (see that note).
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# Apiserver per-layer verification (task 6.4) and verdict aggregation /
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# cleanup-on-every-path (task 7.1) are added by LATER tasks -- see the
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# "Extension points" markers in main() below for exactly where they hook in.
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@ -30,30 +40,59 @@
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# Task 6.1 deliberate deviation from design.md: the default (no-args)
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# resource set is Requirement 1's gap-resource set (r15m, pg, ls, it, swp,
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# io, tmp) plus a couple of already-supported NUMERIC names for regression
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# coverage (mem, r1m) -- NOT "type"/"model" as design.md's illustrative text
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# coverage (mem, cpuf) -- NOT "type"/"model" as design.md's illustrative text
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# suggests. bug-1574 (xce_test can SEGFAULT, non-deterministically, on
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# `resupdate -n type/-n model ...` -- uninitialized-memory UB in
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# set_resval()'s Value_u_svalue fallback path) makes including a string-typed
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# resource in this script's own default live-testing path a real crash risk,
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# not a theoretical one. Revisit once bug-1574 is fixed.
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#
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# Task 6.2 remediation (bug-1579): the regression-coverage name was
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# originally "cpuf", but cpuf is one of worker.c's N_HOST_ATTRS
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# (add_hostattrs_resvals()) -- the controller RESETS it to baseline the
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# moment the synthetic worker disconnects (mark_worker_unavail() ->
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# apply_worker_dead_mutation() -> reset_hostattrs_unknown() +
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# add_hostattrs_resvals()), and inject_resources()'s xce_test session ends
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# with `quit` (disconnecting the worker) before this task's separate
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# resval-query session runs -- so cpuf always reported a false MISMATCH
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# (observed=0.000000). Swapped for "r1m": confirmed via
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# Task 6.2 remediation (bug-1579, original workaround): the
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# regression-coverage name was originally "cpuf", but cpuf is one of
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# worker.c's N_HOST_ATTRS (add_hostattrs_resvals()) -- the controller RESETS
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# it to baseline the moment the synthetic worker disconnects
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# (mark_worker_unavail() -> apply_worker_dead_mutation() ->
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# reset_hostattrs_unknown() + add_hostattrs_resvals()), and
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# inject_resources()'s xce_test session used to end with `quit` (disconnecting
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# the worker) before a separate, later xce_test process ran the controller
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# query -- so cpuf always reported a false MISMATCH (observed=0.000000).
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# Task 6.2's review swapped it for "r1m" (confirmed via
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# resval_typeresolve.c's resinfo[] table to be a genuinely pre-existing
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# ("already-supported") resource name, and via
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# src/worker/src/resource_sync.c to be a periodic/dynamic load-index
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# resource (not in worker.c's N_HOST_ATTRS list), so it preserves the
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# original "already-supported name for regression coverage" intent without
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# the disconnect-reset problem. See bug-1579 for the full analysis and why
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# the alternative fix (keep the worker session connected throughout) is out
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# of scope for this remediation.
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# resource, not in worker.c's N_HOST_ATTRS list) as a workaround, not a fix --
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# the underlying disconnect-timing problem remained live for any *other*
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# host-attrs name (including a user-supplied custom resource=value
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# argument).
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#
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# bug-1579 REAL FIX (this revision): xce_test's `!<shell-command>` escape
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# (preprocess_and_run(), test.c ~line 950-998) is handled in the single
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# top-level REPL loop (test.c main(), the sole call site) BEFORE any
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# context-specific command dispatch -- so it works identically in ANY
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# context, including `worker`, WITHOUT calling leave_ctx()/disconnecting.
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# inject_resources() now inserts a `!` line between `resupdate` and `quit`
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# that invokes this very script recursively, in a hidden
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# `--internal-controller-check` mode (see internal_controller_check() below),
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# from INSIDE the still-open worker session. That nested invocation runs its
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# own client-context xce_test session and queries `resval` for every
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# requested resource name WHILE the synthetic worker is still connected --
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# so a host-attrs resource is never reset before it's checked. The nested
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# check writes raw observed values to $TOP/logs/controller-check-raw.tsv;
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# query_controller_resvals() (task 6.2's original function, still called at
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# the same point in main(), after inject_resources() returns) now reads that
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# file instead of running its own live query -- a SEQUENCING change, not a
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# logic change: the MATCH/MISMATCH comparison, CONTROLLER_OBSERVED/
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# CONTROLLER_CHECK_RESULTS population, and controller-check-results.tsv
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# format are all unchanged. DEFAULT_RESOURCE_ARGS now restores "cpuf"
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# alongside "mem" (design.md's original "a couple of already-supported
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# names for regression coverage" intent) -- this is the proof the fix is
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# real: cpuf now correctly MATCHes at the controller layer instead of
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# false-MISMATCHing. The alternative considered during task 6.2's review
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# (keep the worker session connected across all per-layer checks by
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# reordering calls) was already ruled out there as not viable without this
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# `!`-escape mechanism -- xce_test's REPL has no command path from the
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# `worker` context back to `client` without leave_ctx() (`..`/cmd_up), which
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# disconnects exactly like `quit` does. See bug-1579 for the full history.
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#
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# Must be invoked under an environment with `nix` on PATH (same as
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# xce-deploy-ha / xce-test-ha) -- this script shells out to `nix develop`
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@ -107,6 +146,12 @@ set -u
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SELF_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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REPO="$(cd "$SELF_DIR/../../.." && pwd)"
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# Absolute path to this script itself -- used by inject_resources()'s `!`
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# shell-escape (bug-1579 fix, see the top-of-file note) to invoke this same
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# script recursively in `--internal-controller-check` mode, from INSIDE the
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# xce_test worker session's `system()` call, while that session's connection
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# to the controller is still open (before its `quit`).
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SELF_SCRIPT="$SELF_DIR/$(basename "${BASH_SOURCE[0]}")"
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DEPLOY_HA="$REPO/src/tools/deploy-ha.sh"
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BUILD_DIR="${XCE_RESVERIFY_BUILD_DIR:-$REPO/src/xce.build}"
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@ -144,7 +189,7 @@ Usage: $0 [--keep-running] [--dir DIR] [resource=value ...]
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\$XCE_RESVERIFY_TOP).
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resource=value inject this resource via resupdate (may repeat). Default
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when none given: r15m=1.5 pg=2.5 ls=3.5 it=4.5 swp=5.5
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io=6.5 tmp=7.5 mem=8.5 r1m=9.5 (numeric-only -- see
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io=6.5 tmp=7.5 mem=8.5 cpuf=9.5 (numeric-only -- see
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bug-1574 note at top of file).
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EOF
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}
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@ -352,14 +397,18 @@ confirm_deployment_up() {
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# names for regression coverage -- see the top-of-file bug-1574 note for why
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# this deliberately excludes type/model (design.md's own illustrative text
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# names them, but xce_test can SEGFAULT on a string-typed resupdate, so this
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# is a documented, deliberate deviation, not an oversight). The second
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# regression-coverage name is "r1m" (a periodic/dynamic load-index resource),
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# not a worker.c host-attrs name -- see the top-of-file bug-1579 remediation
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# note for why a host-attrs name (e.g. cpuf) always false-MISMATCHes against
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# this script's own two-session (inject, then query) structure.
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# is a documented, deliberate deviation, not an oversight). The two
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# regression-coverage names are "mem" and "cpuf", matching design.md's
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# original "a couple of already-supported names" intent -- "cpuf" is a
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# worker.c N_HOST_ATTRS name and is restored here (bug-1579's real fix, see
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# the top-of-file note) as live proof that the controller-side check no
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# longer false-MISMATCHes a host-attrs resource: the nested `!`-escape
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# controller check (internal_controller_check()) runs while the synthetic
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# worker's connection is still open, so cpuf is never reset to baseline
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# before it's checked.
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DEFAULT_RESOURCE_ARGS=(
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r15m=1.5 pg=2.5 ls=3.5 it=4.5 swp=5.5 io=6.5 tmp=7.5
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mem=8.5 r1m=9.5
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mem=8.5 cpuf=9.5
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)
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# Fixed synthetic worker identity for this run -- tags every resupdate'd
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@ -415,9 +464,23 @@ inject_resources() {
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log "joining synthetic worker '$WORKER_HOST' (masters=$PEERS) and injecting: ${pairs[*]}"
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# bug-1579 fix: run the controller-side check (internal_controller_check(),
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# below) via a `!` shell-escape BEFORE `quit` -- while this session's
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# worker connection is still open -- instead of in a separate xce_test
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# process run after this session has already disconnected. `%q`-quote
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# every interpolated value defensively (none of TOP/PEERS/WORKER_HOST/
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# resource names are expected to need it, but this line is re-parsed by
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# a shell via xce_test's system() call, so quote anyway).
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local ctrl_check_cmd
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ctrl_check_cmd="bash $(printf '%q' "$SELF_SCRIPT") --internal-controller-check $(printf '%q' "$TOP") $(printf '%q' "$PEERS") $(printf '%q' "$WORKER_HOST")"
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for pair in "${pairs[@]}"; do
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name="${pair%%=*}"
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ctrl_check_cmd="$ctrl_check_cmd $(printf '%q' "$name")"
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done
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local script
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script="$(printf 'set masters %s\nset myname %s\nworker\njoin\nresupdate%s\nquit\n' \
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"$PEERS" "$WORKER_HOST" "$resupdate_line")"
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script="$(printf 'set masters %s\nset myname %s\nworker\njoin\nresupdate%s\n!%s\nquit\n' \
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"$PEERS" "$WORKER_HOST" "$resupdate_line" "$ctrl_check_cmd")"
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out="$(printf '%s' "$script" | xtest)"
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@ -475,7 +538,7 @@ $out"
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[ "$failed" -eq 0 ] || fail "injection did not produce a definitive accept/reject outcome for every requested resource (see above)"
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}
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# ── Step 5: controller-side verification check (task 6.2) ──────────────────
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# ── Step 5: controller-side verification check (task 6.2 + bug-1579 fix) ───
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# Requirement 3.1/3.2: for every SUCCESSFULLY-injected (accepted) resource/
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# worker pair, query the controller via xce_test's client-context `resval`
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# (the same xcecli_resval() call cmd_resupdate's own task 2.2 follow-up
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@ -484,8 +547,105 @@ $out"
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# resource was never actually applied at the controller in the first place
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# (task 2.2's own follow-up query inside resupdate already confirmed that at
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# injection time) -- there is nothing to verify for it here, so
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# query_controller_resvals() only queries names marked "accepted" in
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# query_controller_resvals() only REPORTS on names marked "accepted" in
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# $TOP/logs/injection-results.tsv.
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#
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# bug-1579 fix: the live `resval` query itself no longer happens here. It now
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# happens EARLIER, nested inside inject_resources()'s own xce_test worker
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# session via a `!` shell-escape (see internal_controller_check() below and
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# the top-of-file bug-1579 note) -- for EVERY requested name, accepted or
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# not, since accept/reject isn't known yet at that point in the sequence.
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# query_controller_resvals() reads that nested query's raw results back from
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# $TOP/logs/controller-check-raw.tsv and reports only on the names
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# $TOP/logs/injection-results.tsv (available only now, after
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# inject_resources() has returned and parsed the whole session's output)
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# marks "accepted" -- a pure sequencing change: the MATCH/MISMATCH
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# comparison, CONTROLLER_OBSERVED/CONTROLLER_CHECK_RESULTS population, and
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# controller-check-results.tsv format below are all unchanged from task 6.2.
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# internal_controller_check TOP PEERS WORKER_HOST NAME...
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# NOT a normal in-process function call -- invoked as a FRESH
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# `bash $SELF_SCRIPT --internal-controller-check ...` process via
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# inject_resources()'s `!` shell-escape line, from INSIDE the xce_test
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# worker-context session's system() call, while the injecting synthetic
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# worker's connection to the controller is STILL OPEN (i.e. before that same
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# session's `quit`). This is what makes the controller-side check immune to
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# the worker-disconnect host-attrs reset (worker.c's mark_worker_unavail()
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# -> apply_worker_dead_mutation() -> reset_hostattrs_unknown() +
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# add_hostattrs_resvals(), N_HOST_ATTRS) -- the worker never disconnects
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# before this check runs.
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#
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# Queries resval for EVERY given name, not just ones that will turn out to be
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# "accepted" -- cmd_resupdate()'s own accept/reject determination has already
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# run inside THIS SAME xce_test process by this point and been printed to
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# its stdout, but that text isn't available to this freshly-spawned process;
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# accept/reject filtering happens later, in query_controller_resvals(), once
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# the parent script has parsed the whole session's captured output. Writes
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# RAW observed values (blank if not found) to
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# $TOP/logs/controller-check-raw.tsv (name\tobserved) for
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# query_controller_resvals() to read once inject_resources() returns.
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#
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# On a connection failure, records $TOP/logs/controller-check-error.txt
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# instead (query_controller_resvals() fails the run on this, same failure
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# semantics as task 6.2's original inline check) and deliberately still
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# returns 0 either way: a non-zero exit here becomes this xce_test session's
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# g_last_status and, in non-interactive/batch mode, ABORTS its REPL loop
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# before `quit` runs (preprocess_and_run()'s shell-escape handling) --
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# undesirable when the failure can instead be surfaced through the raw-file/
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# error-file contract and let this session reach `quit` normally.
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internal_controller_check() {
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local top="$1" peers="$2" worker_host="$3"
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shift 3
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local names=("$@")
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mkdir -p "$top/logs"
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local raw_tsv="$top/logs/controller-check-raw.tsv"
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local err_txt="$top/logs/controller-check-error.txt"
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rm -f "$err_txt"
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: > "$raw_tsv"
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[ "${#names[@]}" -gt 0 ] || return 0
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local cmds="" name
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for name in "${names[@]}"; do
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cmds="${cmds}resval -n $name -m $worker_host"$'\n'
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done
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local script out
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script="$(printf 'set masters %s\nclient\n%squit\n' "$peers" "$cmds")"
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out="$(printf '%s' "$script" | xtest)"
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if printf '%s\n' "$out" | grep -Fq -- "enter_ctx: invalid"; then
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printf '%s\n' "$out" > "$err_txt"
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return 0
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fi
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# Same sequential state-machine parse query_controller_resvals() used to
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# do inline pre-fix -- see its own historical comment (still applicable
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# here) for why (bug-1576's short-name substring hazard, no trailing
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# marker after the last query).
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local -A parsed_values=()
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local line cur_name=""
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while IFS= read -r line; do
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case "$line" in
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"resource "*"@${worker_host}:")
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cur_name="${line#resource }"
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cur_name="${cur_name%@${worker_host}:}"
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;;
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"value: "*)
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if [ -n "$cur_name" ]; then
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parsed_values["$cur_name"]="${line#value: }"
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fi
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cur_name=""
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;;
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esac
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done <<< "$out"
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for name in "${names[@]}"; do
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printf '%s\t%s\n' "$name" "${parsed_values[$name]:-}" >> "$raw_tsv"
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done
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return 0
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}
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declare -A CONTROLLER_OBSERVED=() # resource name -> raw value string as rendered by cmd_resval (only set for accepted names actually queried)
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declare -A CONTROLLER_CHECK_RESULTS=() # resource name -> "MATCH" | "MISMATCH: injected=<X> observed=<Y>" | "MISMATCH: controller returned no value ..."
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@ -552,49 +712,28 @@ query_controller_resvals() {
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return 0
|
||||
fi
|
||||
|
||||
log "controller check: querying resval for ${#accepted_names[@]} accepted resource(s): ${accepted_names[*]}"
|
||||
|
||||
local cmds="" out
|
||||
for name in "${accepted_names[@]}"; do
|
||||
cmds="${cmds}resval -n $name -m $WORKER_HOST"$'\n'
|
||||
done
|
||||
|
||||
local script
|
||||
script="$(printf 'set masters %s\nclient\n%squit\n' "$PEERS" "$cmds")"
|
||||
|
||||
out="$(printf '%s' "$script" | xtest)"
|
||||
|
||||
if printf '%s\n' "$out" | grep -Fq -- "enter_ctx: invalid"; then
|
||||
# The live `resval` query already ran EARLIER, nested inside
|
||||
# inject_resources()'s own xce_test worker session via a `!` shell
|
||||
# escape (bug-1579 fix -- see internal_controller_check() above), while
|
||||
# the synthetic worker's connection to the controller was still open.
|
||||
# This function just reads back what that nested query already
|
||||
# collected -- see the "Step 5" comment block above.
|
||||
local err_txt="$TOP/logs/controller-check-error.txt"
|
||||
if [ -f "$err_txt" ]; then
|
||||
fail "controller check failed -- xce_test client context could not connect (masters=$PEERS); xce_test output:
|
||||
$out"
|
||||
$(cat "$err_txt")"
|
||||
fi
|
||||
|
||||
# Sequential state-machine parse of cmd_resval's own fixed 2-line block
|
||||
# format (test.c's cmd_resval(): "resource <name>@<host>:\nvalue:
|
||||
# <rendered>\n") or its 1-line not-found message ("no resource value
|
||||
# found in given host"). Keyed off the exact header line rather than a
|
||||
# per-name grep -- avoids the short-resource-name substring hazard
|
||||
# (bug-1576/inject_resources()'s own -Fx lesson: names like "it"/"io"/
|
||||
# "ls" can appear as a literal substring of an unrelated line) and
|
||||
# avoids depending on a trailing line always existing after the LAST
|
||||
# query's output (a plain `grep -A1` on the final block would silently
|
||||
# come up empty if `quit` prints nothing further).
|
||||
local raw_tsv="$TOP/logs/controller-check-raw.tsv"
|
||||
[ -f "$raw_tsv" ] || fail "controller check: $raw_tsv not found -- inject_resources()'s nested controller-check (internal_controller_check(), invoked via its xce_test session's \`!\` shell escape) did not run or did not complete"
|
||||
|
||||
log "controller check: reporting on ${#accepted_names[@]} accepted resource(s) (queried during injection, see internal_controller_check()): ${accepted_names[*]}"
|
||||
|
||||
local -A parsed_values=()
|
||||
local line cur_name=""
|
||||
while IFS= read -r line; do
|
||||
case "$line" in
|
||||
"resource "*"@${WORKER_HOST}:")
|
||||
cur_name="${line#resource }"
|
||||
cur_name="${cur_name%@${WORKER_HOST}:}"
|
||||
;;
|
||||
"value: "*)
|
||||
if [ -n "$cur_name" ]; then
|
||||
parsed_values["$cur_name"]="${line#value: }"
|
||||
fi
|
||||
cur_name=""
|
||||
;;
|
||||
esac
|
||||
done <<< "$out"
|
||||
while IFS=$'\t' read -r name value; do
|
||||
[ -n "$name" ] || continue
|
||||
parsed_values["$name"]="$value"
|
||||
done < "$raw_tsv"
|
||||
|
||||
mkdir -p "$TOP/logs"
|
||||
local results_tsv="$TOP/logs/controller-check-results.tsv"
|
||||
|
|
@ -846,4 +985,17 @@ main() {
|
|||
exit 0
|
||||
}
|
||||
|
||||
# Hidden internal entry point (bug-1579 fix): inject_resources()'s `!`
|
||||
# shell-escape line invokes this same script as `bash "$SELF_SCRIPT"
|
||||
# --internal-controller-check TOP PEERS WORKER_HOST NAME...` from inside its
|
||||
# own xce_test worker session. Intercepted here, BEFORE main()/parse_args()
|
||||
# (which has no knowledge of this flag and would otherwise reject it as an
|
||||
# "Unknown argument") -- runs only internal_controller_check(), none of the
|
||||
# normal deploy/inject/trap flow.
|
||||
if [ "${1:-}" = "--internal-controller-check" ]; then
|
||||
shift
|
||||
internal_controller_check "$@"
|
||||
exit $?
|
||||
fi
|
||||
|
||||
main "$@"
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue