feat: chain per-article cron jobs to eliminate execution time ceiling
The pipeline previously ran all articles sequentially in a single PHP process. On Hostinger, this timed out at ~120s — enough for 1 article but not 2+. Now the pipeline generates article 1 in-process, then queues articles 2..N as individual WP-Cron events. Each article gets its own PHP process with its own execution time budget, so we can generate any number of articles regardless of server time limits. Architecture: - Pipeline_Runner: orchestrate (collect+analyze+score) + first article, then serialize remaining ideas to wp_options and chain cron events - Article_Worker (new): focused single-article worker extracted from the pipeline loop — content gen + editorial + publish - Executor: new on_process_article_queue() handler for chained events; status poller re-schedules orphaned queue jobs automatically - Article_Idea: added to_array() for queue serialization Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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144
includes/core/class-article-worker.php
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144
includes/core/class-article-worker.php
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<?php
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declare(strict_types=1);
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/**
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* Generates a single article: content → editorial review → publish/draft.
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*
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* Extracted from Pipeline_Runner so each chained cron job has a focused,
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* single-responsibility worker. One worker = one article = one PHP process.
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*
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* Triggered by: Pipeline_Runner (directly for article 1, via cron for 2..N).
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* Dependencies: Content_Generator, Chief_Editor, Publisher, Cost_Tracker.
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*
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* @see core/class-pipeline-runner.php — Orchestrates and dispatches workers.
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* @see core/class-content-generator.php — LLM content generation.
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* @see core/class-chief-editor.php — Editorial quality gate.
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* @see core/class-publisher.php — WordPress post creation.
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*/
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class PRAutoBlogger_Article_Worker {
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private PRAutoBlogger_Cost_Tracker $cost_tracker;
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/**
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* @param PRAutoBlogger_Cost_Tracker $cost_tracker Shared cost tracker.
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*/
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public function __construct( PRAutoBlogger_Cost_Tracker $cost_tracker ) {
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$this->cost_tracker = $cost_tracker;
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}
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/**
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* Generate one article from an idea.
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*
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* Runs the full single-article pipeline: LLM content generation →
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* editorial review → publish or save as draft.
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*
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* Side effects: LLM API calls, database writes, WordPress post creation,
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* image generation, cost logging.
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*
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* @param PRAutoBlogger_Article_Idea $idea The scored idea to generate from.
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*
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* @return array{generated: int, published: int, rejected: int, cost: float}
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*/
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public function generate( PRAutoBlogger_Article_Idea $idea ): array {
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$llm = new PRAutoBlogger_OpenRouter_Provider();
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$generator = new PRAutoBlogger_Content_Generator( $llm, $this->cost_tracker );
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$editor = new PRAutoBlogger_Chief_Editor( $llm, $this->cost_tracker );
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$publisher = new PRAutoBlogger_Publisher();
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$auto_publish = in_array(
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get_option( 'prautoblogger_auto_publish', '0' ),
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[ '1', 'yes' ],
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true
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);
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$result = [
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'generated' => 0,
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'published' => 0,
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'rejected' => 0,
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'cost' => 0.0,
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];
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try {
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$this->broadcast_stage( __( 'Generating article draft via AI…', 'prautoblogger' ) );
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$content = $generator->generate( $idea );
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$result['generated'] = 1;
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$this->broadcast_stage( __( 'Running editorial pass…', 'prautoblogger' ) );
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$review = $editor->review( $content, $idea );
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$this->broadcast_stage( __( 'Saving and publishing…', 'prautoblogger' ) );
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$this->publish_or_draft(
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$content, $idea, $review, $publisher, $auto_publish, $result
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);
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} catch ( \Throwable $e ) {
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PRAutoBlogger_Logger::instance()->error(
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sprintf(
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'Article generation %s for "%s": %s',
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get_class( $e ),
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$idea->get_topic(),
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$e->getMessage()
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),
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'pipeline'
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);
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}
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$result['cost'] = $this->cost_tracker->get_current_run_cost();
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return $result;
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}
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/**
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* Publish approved content or save as draft.
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*
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* @param string $content Generated HTML content.
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* @param PRAutoBlogger_Article_Idea $idea Source idea.
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* @param PRAutoBlogger_Editorial_Review $review Editor verdict.
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* @param PRAutoBlogger_Publisher $publisher Publisher instance.
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* @param bool $auto_publish Whether to auto-publish.
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* @param array &$result Result counters (by ref).
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*/
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private function publish_or_draft(
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string $content,
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PRAutoBlogger_Article_Idea $idea,
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PRAutoBlogger_Editorial_Review $review,
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PRAutoBlogger_Publisher $publisher,
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bool $auto_publish,
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array &$result
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): void {
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$verdict = $review->get_verdict();
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$run_id = $this->cost_tracker->get_run_id();
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if ( 'approved' === $verdict || 'revised' === $verdict ) {
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$final = 'revised' === $verdict
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? ( $review->get_revised_content() ?? $content )
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: $content;
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if ( $auto_publish ) {
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$publisher->publish( $final, $idea, $review, $run_id );
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$result['published']++;
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} else {
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$publisher->save_as_draft( $final, $idea, $review, $run_id );
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}
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} else {
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$publisher->save_as_draft( $content, $idea, $review, $run_id );
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$result['rejected']++;
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PRAutoBlogger_Logger::instance()->info(
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'Article rejected by editor: ' . $idea->get_topic(),
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'pipeline'
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);
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}
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}
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/**
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* Update the generation status transient with the current stage.
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*
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* @param string $stage Human-readable stage description.
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*/
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private function broadcast_stage( string $stage ): void {
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$transient_key = 'prautoblogger_generation_status';
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$current = get_transient( $transient_key );
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if ( is_array( $current ) && 'running' === ( $current['status'] ?? '' ) ) {
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$current['stage'] = $stage;
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set_transient( $transient_key, $current, 600 );
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}
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}
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}
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