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chore: initial snapshot of 2meet-data-optimizer v0.1.0

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Baseline before backporting wp-data-optimizer v3.0.1-v3.4.6.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TbG1keQQ7XBa7qMQY16KCY
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wpdev
2026-07-31 05:06:36 +08:00
commit d36bb954d1
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includes/migration/class-tmdo-cold-migration.php
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<?php
/**
* Zone C (Cold) migration for postmeta to JSON blob cold table.
*
* @package WP_Data_Optimizer
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Zone C (Cold) migration — postmeta → JSON blob cold table.
*
* For each post, gathers all registered cold meta_keys and stores them
* as a single JSON blob in wpdo_cold_{post_type}.
*/
class TMDO_Cold_Migration extends TMDO_Migration_Base {
/**
* Post type being migrated.
*
* @var string
*/
private string $post_type;
/**
* Constructor.
*
* @param string $post_type Post type slug to migrate.
*/
public function __construct( string $post_type ) {
$this->post_type = $post_type;
}
/**
* Returns the module identifier.
*
* @return string Module name.
*/
public function get_module(): string {
return 'cold_' . sanitize_key( $this->post_type );
}
/**
* Returns the zone identifier.
*
* @return string Zone name.
*/
public function get_zone(): string {
return 'cold';
}
/**
* Returns the total number of posts to migrate.
*
* @return int Total post count.
*/
protected function count_source(): int {
global $wpdb;
$meta_keys = TMDO_Schema_Registry::instance()->get_cold_meta_keys( $this->post_type );
if ( empty( $meta_keys ) ) {
return 0;
}
$placeholders = implode( ',', array_fill( 0, count( $meta_keys ), '%s' ) );
$args = array_merge( array( $this->post_type ), $meta_keys );
// Count distinct posts that have at least one cold field.
// phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare,WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber -- $placeholders from array_fill; $wpdb->postmeta/$wpdb->posts are core properties.
return (int) $wpdb->get_var(
$wpdb->prepare(
"SELECT COUNT(DISTINCT pm.post_id)
FROM {$wpdb->postmeta} pm
INNER JOIN {$wpdb->posts} p ON p.ID = pm.post_id
WHERE p.post_type = %s AND pm.meta_key IN ({$placeholders})",
...$args
)
);
// phpcs:enable WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare,WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber
}
/**
* Migrates one batch of posts to the cold table.
*
* @param int $offset Starting post offset.
* @return int Number of posts processed.
*/
protected function migrate_batch( int $offset ): int {
global $wpdb;
$meta_keys = TMDO_Schema_Registry::instance()->get_cold_meta_keys( $this->post_type );
if ( empty( $meta_keys ) ) {
return 0;
}
$placeholders = implode( ',', array_fill( 0, count( $meta_keys ), '%s' ) );
// Get batch of distinct post IDs.
$args = array_merge( array( $this->post_type ), $meta_keys, array( self::BATCH_SIZE, $offset ) );
// phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare,WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber -- $placeholders/$id_placeholders from array_fill; $wpdb->postmeta/$wpdb->posts are core properties.
$post_ids = $wpdb->get_col(
$wpdb->prepare(
"SELECT DISTINCT pm.post_id
FROM {$wpdb->postmeta} pm
INNER JOIN {$wpdb->posts} p ON p.ID = pm.post_id
WHERE p.post_type = %s AND pm.meta_key IN ({$placeholders})
ORDER BY pm.post_id ASC
LIMIT %d OFFSET %d",
...$args
)
);
// phpcs:enable WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare,WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber
// Ensure cold table exists before any write (even if this batch is empty).
TMDO_Zone_Cold::ensure_table( $this->post_type );
if ( empty( $post_ids ) ) {
return 0;
}
// Fetch all cold meta for these posts.
$id_placeholders = implode( ',', array_fill( 0, count( $post_ids ), '%d' ) );
// phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare,WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber
$meta_rows = $wpdb->get_results(
$wpdb->prepare(
"SELECT post_id, meta_key, meta_value
FROM {$wpdb->postmeta}
WHERE post_id IN ({$id_placeholders}) AND meta_key IN ({$placeholders})",
...array_merge( array_map( 'intval', $post_ids ), $meta_keys )
),
ARRAY_A
);
// phpcs:enable WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare,WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber
// Group by post_id.
$grouped = array();
foreach ( $meta_rows ?: array() as $row ) {
$grouped[ $row['post_id'] ][ $row['meta_key'] ] = $row['meta_value'];
}
// Write each post's cold data as a JSON blob.
foreach ( $grouped as $pid => $data ) {
TMDO_Zone_Cold::set_many( (int) $pid, $this->post_type, $data );
}
return count( $post_ids );
}
/**
* Verifies that the cold table row count is at least as large as the source.
*
* @return bool True if verification passes.
*/
public function verify_counts(): bool {
global $wpdb;
$source = $this->count_source();
$table = TMDO_Zone_Cold::table( $this->post_type );
$target = (int) $wpdb->get_var( "SELECT COUNT(*) FROM `{$table}`" ); // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared -- table name from TMDO_Zone_Cold::table()
return $target >= $source;
}
}