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feat(cost): per-run cost governor — reserve-before-call enforcement

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Pipeline v2 Phase 1, commit 3/4. Cost_Governor reserves each call's
worst-case estimate (prompt chars/4 + max_tokens via the #18 pricing
chain) against the run ledger row with one atomic conditional UPDATE
(the #10 lock discipline) BEFORE dispatch, then settles to actuals after
each response; failed calls release their hold. Integrated inside
OpenRouter_Provider::send_chat_completion so EVERY text-LLM call path is
guarded with zero call-site changes; the image curl_multi batch reserves
its summed estimate in Image_Pipeline before generate_image_batch.

Breach: run halted (sticky), overage recorded, Cost_Ceiling_Exception
aborts the un-dispatched call, process_next_queued_article aborts the
remaining queued articles of halted/failed runs, and the Review Queue
shows a 'Halted runs' notice (runs halted pre-post have no draft to
list). Ceiling = prautoblogger_per_run_cost_ceiling_usd setting (default
constant $0.50, snapshotted at run start, 0 = disabled). Standalone
no-run calls, the monthly cap, and the AI Gateway path are unchanged.

Under-300: provider API-key fetch+validation moved verbatim to
OpenRouter_Request_Builder::resolve_api_key().

Agent-Session: pipeline-v2-phase1-engineer-20260612
This commit is contained in:
peptiderepo
2026-06-11 04:20:30 +00:00
committed by peptiderepo
parent c723af927b
commit c6d051c87a
13 changed files with 667 additions and 47 deletions
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12
includes/core/class-pipeline-runner.php Executable file → Normal file
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@@ -119,6 +119,18 @@ class PRAutoBlogger_Pipeline_Runner {
return;
}
// v0.18.0 — a run halted by the per-run cost governor (or failed by
// the reaper) must not dispatch its remaining queued articles.
$run_status = PRAutoBlogger_Run_State::get_status( $queue['run_id'] );
if ( in_array( $run_status, array( 'halted', 'failed' ), true ) ) {
PRAutoBlogger_Logger::instance()->warning(
sprintf( 'Run %s is %s. Aborting remaining queued articles.', $queue['run_id'], $run_status ),
'pipeline'
);
$this->finish_queue();
return;
}
// Persist the consumed queue BEFORE generating so the status poller
// cannot re-schedule a cron event for the same idea. Without this,
// the DB still holds the old queue during the ~90s generation window,