first commit
This commit is contained in:
Rachit Bhargava
@@ -0,0 +1,875 @@
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<?php
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/**
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* Generic migration class to move any entity, entity_meta table combination to custom table.
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*/
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namespace Automattic\WooCommerce\Database\Migrations;
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/**
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* Base class for implementing migrations from the standard WordPress meta table
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* to custom structured tables.
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*
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* @package Automattic\WooCommerce\Database\Migrations\CustomOrderTable
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*/
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abstract class MetaToCustomTableMigrator extends TableMigrator {
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/**
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* Config for tables being migrated and migrated from. See __construct() for detailed config.
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*
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* @var array
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*/
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protected $schema_config;
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/**
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* Meta config, see __construct for detailed config.
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*
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* @var array
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*/
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protected $meta_column_mapping;
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/**
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* Column mapping from source table to destination custom table. See __construct for detailed config.
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*
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* @var array
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*/
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protected $core_column_mapping;
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/**
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* MetaToCustomTableMigrator constructor.
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*/
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public function __construct() {
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$this->schema_config = MigrationHelper::escape_schema_for_backtick( $this->get_schema_config() );
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$this->meta_column_mapping = $this->get_meta_column_config();
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$this->core_column_mapping = $this->get_core_column_mapping();
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}
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/**
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* Specify schema config the source and destination table.
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*
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* @return array Schema, must of the form:
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* array(
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'source' => array(
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'entity' => array(
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'table_name' => $source_table_name,
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'meta_rel_column' => $column_meta, Name of column in source table which is referenced by meta table.
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'destination_rel_column' => $column_dest, Name of column in source table which is refenced by destination table,
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'primary_key' => $primary_key, Primary key of the source table
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),
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'meta' => array(
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'table' => $meta_table_name,
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'meta_key_column' => $meta_key_column_name,
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'meta_value_column' => $meta_value_column_name,
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'entity_id_column' => $entity_id_column, Name of the column having entity IDs.
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),
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),
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'destination' => array(
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'table_name' => $table_name, Name of destination table,
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'source_rel_column' => $column_source_id, Name of the column in destination table which is referenced by source table.
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'primary_key' => $table_primary_key,
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'primary_key_type' => $type bool|int|string|decimal
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)
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*/
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abstract protected function get_schema_config(): array;
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/**
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* Specify column config from the source table.
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*
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* @return array Config, must be of the form:
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* array(
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* '$source_column_name_1' => array( // $source_column_name_1 is column name in source table, or a select statement.
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* 'type' => 'type of value, could be string/int/date/float.',
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* 'destination' => 'name of the column in column name where this data should be inserted in.',
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* ),
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* '$source_column_name_2' => array(
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* ......
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* ),
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* ....
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* ).
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*/
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abstract protected function get_core_column_mapping(): array;
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/**
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* Specify meta keys config from source meta table.
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*
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* @return array Config, must be of the form.
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* array(
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* '$meta_key_1' => array( // $meta_key_1 is the name of meta_key in source meta table.
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* 'type' => 'type of value, could be string/int/date/float',
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* 'destination' => 'name of the column in column name where this data should be inserted in.',
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* ),
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* '$meta_key_2' => array(
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* ......
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* ),
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* ....
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* ).
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*/
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abstract protected function get_meta_column_config(): array;
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/**
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* Generate SQL for data insertion.
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*
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* @param array $batch Data to generate queries for. Will be 'data' array returned by `$this->fetch_data_for_migration_for_ids()` method.
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*
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* @return string Generated queries for insertion for this batch, would be of the form:
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* INSERT IGNORE INTO $table_name ($columns) values
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* ($value for row 1)
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* ($value for row 2)
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* ...
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*/
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private function generate_insert_sql_for_batch( array $batch ): string {
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$table = $this->schema_config['destination']['table_name'];
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list( $value_sql, $column_sql ) = $this->generate_column_clauses( array_merge( $this->core_column_mapping, $this->meta_column_mapping ), $batch );
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return "INSERT INTO $table (`$column_sql`) VALUES $value_sql;"; // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared, -- $insert_query is hardcoded, $value_sql is already escaped.
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}
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/**
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* Generate SQL for data updating.
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*
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* @param array $batch Data to generate queries for. Will be `data` array returned by fetch_data_for_migration_for_ids() method.
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*
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* @param array $entity_row_mapping Maps rows to update data with their original IDs. Will be returned by `generate_update_sql_for_batch`.
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*
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* @return string Generated queries for batch update. Would be of the form:
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* INSERT INTO $table ( $columns ) VALUES
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* ($value for row 1)
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* ($valye for row 2)
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* ...
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* ON DUPLICATE KEY UPDATE
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* $column1 = VALUES($column1)
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* $column2 = VALUES($column2)
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* ...
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*/
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private function generate_update_sql_for_batch( array $batch, array $entity_row_mapping ): string {
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$table = $this->schema_config['destination']['table_name'];
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$destination_primary_id_schema = $this->get_destination_table_primary_id_schema();
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foreach ( $batch as $entity_id => $row ) {
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$batch[ $entity_id ][ $destination_primary_id_schema['destination_primary_key']['destination'] ] = $entity_row_mapping[ $entity_id ]->destination_id;
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}
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list( $value_sql, $column_sql, $columns ) = $this->generate_column_clauses(
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array_merge( $destination_primary_id_schema, $this->core_column_mapping, $this->meta_column_mapping ),
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$batch
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);
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$duplicate_update_key_statement = MigrationHelper::generate_on_duplicate_statement_clause( $columns );
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return "INSERT INTO $table (`$column_sql`) VALUES $value_sql $duplicate_update_key_statement;";
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}
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/**
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* Generate schema for primary ID column of destination table.
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*
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* @return array[] Schema for primary ID column.
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*/
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private function get_destination_table_primary_id_schema(): array {
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return array(
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'destination_primary_key' => array(
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'destination' => $this->schema_config['destination']['primary_key'],
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'type' => $this->schema_config['destination']['primary_key_type'],
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),
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);
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}
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/**
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* Generate values and columns clauses to be used in INSERT and INSERT..ON DUPLICATE KEY UPDATE statements.
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*
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* @param array $columns_schema Columns config for destination table.
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* @param array $batch Actual data to migrate as returned by `data` in `fetch_data_for_migration_for_ids` method.
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*
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* @return array SQL clause for values, columns placeholders, and columns.
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*/
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private function generate_column_clauses( array $columns_schema, array $batch ): array {
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global $wpdb;
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$columns = array();
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$placeholders = array();
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foreach ( $columns_schema as $prev_column => $schema ) {
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if ( in_array( $schema['destination'], $columns, true ) ) {
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continue;
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}
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$columns[] = $schema['destination'];
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$placeholders[] = MigrationHelper::get_wpdb_placeholder_for_type( $schema['type'] );
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}
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$placeholders = "'" . implode( "', '", $placeholders ) . "'";
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$values = array();
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foreach ( array_values( $batch ) as $row ) {
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$query_params = array();
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foreach ( $columns as $column ) {
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$query_params[] = $row[ $column ] ?? null;
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}
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// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- $placeholders can only contain combination of placeholders described in MigrationHelper::get_wpdb_placeholder_for_type
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$value_string = '(' . $wpdb->prepare( $placeholders, $query_params ) . ')';
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$values[] = $value_string;
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}
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$value_sql = implode( ',', $values );
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$column_sql = implode( '`, `', $columns );
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return array( $value_sql, $column_sql, $columns );
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}
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/**
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* Migrate a batch of entities from the posts table to the corresponding table.
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*
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* @param array $entity_ids Ids of entities to migrate.
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*
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* @return void
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*/
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protected function process_migration_batch_for_ids_core( array $entity_ids ): void {
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$data = $this->fetch_data_for_migration_for_ids( $entity_ids );
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foreach ( $data['errors'] as $entity_id => $errors ) {
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foreach ( $errors as $column_name => $error_message ) {
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$this->add_error( "Error importing data for post with id $entity_id: column $column_name: $error_message" );
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}
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}
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if ( count( $data['data'] ) === 0 ) {
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return;
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}
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$entity_ids = array_keys( $data['data'] );
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$existing_records = $this->get_already_existing_records( $entity_ids );
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$to_insert = array_diff_key( $data['data'], $existing_records );
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$this->process_insert_batch( $to_insert );
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$existing_records = array_filter(
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$existing_records,
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function( $record_data ) {
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return '1' === $record_data->modified;
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}
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);
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$to_update = array_intersect_key( $data['data'], $existing_records );
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$this->process_update_batch( $to_update, $existing_records );
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}
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/**
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* Process batch for insertion into destination table.
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*
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* @param array $batch Data to insert, will be of the form as returned by `data` in `fetch_data_for_migration_for_ids`.
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*/
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private function process_insert_batch( array $batch ): void {
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if ( 0 === count( $batch ) ) {
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return;
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}
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$queries = $this->generate_insert_sql_for_batch( $batch );
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// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- Queries should already be prepared.
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$processed_rows_count = $this->db_query( $queries );
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$this->maybe_add_insert_or_update_error( 'insert', $processed_rows_count );
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}
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/**
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* Process batch for update into destination table.
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*
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* @param array $batch Data to insert, will be of the form as returned by `data` in `fetch_data_for_migration_for_ids`.
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* @param array $ids_mapping Maps rows to update data with their original IDs.
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*/
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private function process_update_batch( array $batch, array $ids_mapping ): void {
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if ( 0 === count( $batch ) ) {
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return;
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}
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$queries = $this->generate_update_sql_for_batch( $batch, $ids_mapping );
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// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- Queries should already be prepared.
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$processed_rows_count = $this->db_query( $queries ) / 2;
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$this->maybe_add_insert_or_update_error( 'update', $processed_rows_count );
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}
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/**
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* Fetch data for migration.
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*
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* @param array $entity_ids Entity IDs to fetch data for.
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*
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* @return array[] Data along with errors (if any), will of the form:
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* array(
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* 'data' => array(
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* 'id_1' => array( 'column1' => value1, 'column2' => value2, ...),
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* ...,
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* ),
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* 'errors' => array(
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* 'id_1' => array( 'column1' => error1, 'column2' => value2, ...),
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* ...,
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* )
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*/
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private function fetch_data_for_migration_for_ids( array $entity_ids ): array {
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if ( empty( $entity_ids ) ) {
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return array(
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'data' => array(),
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'errors' => array(),
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);
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}
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$entity_table_query = $this->build_entity_table_query( $entity_ids );
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// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- Output of $this->build_entity_table_query is already prepared.
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$entity_data = $this->db_get_results( $entity_table_query );
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if ( empty( $entity_data ) ) {
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return array(
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'data' => array(),
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'errors' => array(),
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);
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}
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$entity_meta_rel_ids = array_column( $entity_data, 'entity_meta_rel_id' );
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$meta_table_query = $this->build_meta_data_query( $entity_meta_rel_ids );
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// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- Output of $this->build_meta_data_query is already prepared.
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$meta_data = $this->db_get_results( $meta_table_query );
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return $this->process_and_sanitize_data( $entity_data, $meta_data );
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}
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/**
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* Fetch id mappings for records that are already inserted in the destination table.
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*
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* @param array $entity_ids List of entity IDs to verify.
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*
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* @return array Already migrated entities, would be of the form
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* array(
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* '$source_id1' => array(
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* 'source_id' => $source_id1,
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* 'destination_id' => $destination_id1
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* 'modified' => 0 if it can be determined that the row doesn't need update, 1 otherwise
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* ),
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* ...
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* )
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*/
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protected function get_already_existing_records( array $entity_ids ): array {
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global $wpdb;
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$source_table = $this->schema_config['source']['entity']['table_name'];
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$source_destination_join_column = $this->schema_config['source']['entity']['destination_rel_column'];
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$source_primary_key_column = $this->schema_config['source']['entity']['primary_key'];
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$destination_table = $this->schema_config['destination']['table_name'];
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$destination_source_join_column = $this->schema_config['destination']['source_rel_column'];
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$destination_primary_key_column = $this->schema_config['destination']['primary_key'];
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$entity_id_placeholder = implode( ',', array_fill( 0, count( $entity_ids ), '%d' ) );
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// Additional SQL to check if the row needs update according to the column mapping.
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// The IFNULL and CHAR(0) "hack" is needed because NULLs can't be directly compared in SQL.
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$modified_selector = array();
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$core_column_mapping = array_filter(
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$this->core_column_mapping,
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function( $mapping ) {
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return ! isset( $mapping['select_clause'] );
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}
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);
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foreach ( $core_column_mapping as $column_name => $mapping ) {
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if ( $column_name === $source_primary_key_column ) {
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continue;
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}
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$modified_selector[] =
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"IFNULL(source.$column_name,CHAR(0)) != IFNULL(destination.{$mapping['destination']},CHAR(0))"
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. ( 'string' === $mapping['type'] ? ' COLLATE ' . $wpdb->collate : '' );
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}
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if ( empty( $modified_selector ) ) {
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$modified_selector = ', 1 AS modified';
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} else {
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$modified_selector = trim( implode( ' OR ', $modified_selector ) );
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$modified_selector = ", if( $modified_selector, 1, 0 ) AS modified";
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}
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$additional_where = $this->get_additional_where_clause_for_get_data_to_insert_or_update( $entity_ids );
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$already_migrated_entity_ids = $this->db_get_results(
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$wpdb->prepare(
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// phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared, WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare -- All columns and table names are hardcoded.
|
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"
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SELECT source.`$source_primary_key_column` as source_id, destination.`$destination_primary_key_column` as destination_id $modified_selector
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FROM `$destination_table` destination
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JOIN `$source_table` source ON source.`$source_destination_join_column` = destination.`$destination_source_join_column`
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WHERE source.`$source_primary_key_column` IN ( $entity_id_placeholder ) $additional_where
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",
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$entity_ids
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)
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// phpcs:enable
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||||
);
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return array_column( $already_migrated_entity_ids, null, 'source_id' );
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}
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/**
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* Get additional string to be appended to the WHERE clause of the SQL query used by get_data_to_insert_or_update.
|
||||
*
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* @param array $entity_ids The ids of the entities being inserted or updated.
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* @return string Additional string for the WHERE clause, must either be empty or start with "AND" or "OR".
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*/
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protected function get_additional_where_clause_for_get_data_to_insert_or_update( array $entity_ids ): string {
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return '';
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||||
}
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||||
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||||
/**
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* Helper method to build query used to fetch data from core source table.
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||||
*
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||||
* @param array $entity_ids List of entity IDs to fetch.
|
||||
*
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* @return string Query that can be used to fetch data.
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||||
*/
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private function build_entity_table_query( array $entity_ids ): string {
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global $wpdb;
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||||
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$source_entity_table = $this->schema_config['source']['entity']['table_name'];
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$source_meta_rel_id_column = "`$source_entity_table`.`{$this->schema_config['source']['entity']['meta_rel_column']}`";
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$source_primary_key_column = "`$source_entity_table`.`{$this->schema_config['source']['entity']['primary_key']}`";
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$where_clause = "$source_primary_key_column IN (" . implode( ',', array_fill( 0, count( $entity_ids ), '%d' ) ) . ')';
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$entity_keys = array();
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foreach ( $this->core_column_mapping as $column_name => $column_schema ) {
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if ( isset( $column_schema['select_clause'] ) ) {
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$select_clause = $column_schema['select_clause'];
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$entity_keys[] = "$select_clause AS $column_name";
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||||
} else {
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$entity_keys[] = "$source_entity_table.$column_name";
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||||
}
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||||
}
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$entity_column_string = implode( ', ', $entity_keys );
|
||||
// phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared, WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare -- $source_meta_rel_id_column, $source_destination_rel_id_column etc is escaped for backticks. $where clause and $order_by should already be escaped.
|
||||
$query = $wpdb->prepare(
|
||||
"
|
||||
SELECT
|
||||
$source_meta_rel_id_column as entity_meta_rel_id,
|
||||
$source_primary_key_column as primary_key_id,
|
||||
$entity_column_string
|
||||
FROM `$source_entity_table`
|
||||
WHERE $where_clause;
|
||||
",
|
||||
$entity_ids
|
||||
);
|
||||
|
||||
// phpcs:enable
|
||||
|
||||
return $query;
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper method to build query that will be used to fetch data from source meta table.
|
||||
*
|
||||
* @param array $entity_ids List of IDs to fetch metadata for.
|
||||
*
|
||||
* @return string Query for fetching meta data.
|
||||
*/
|
||||
private function build_meta_data_query( array $entity_ids ): string {
|
||||
global $wpdb;
|
||||
|
||||
$meta_table = $this->schema_config['source']['meta']['table_name'];
|
||||
$meta_keys = array_keys( $this->meta_column_mapping );
|
||||
$meta_key_column = $this->schema_config['source']['meta']['meta_key_column'];
|
||||
$meta_value_column = $this->schema_config['source']['meta']['meta_value_column'];
|
||||
$meta_table_relational_key = $this->schema_config['source']['meta']['entity_id_column'];
|
||||
|
||||
$meta_column_string = implode( ', ', array_fill( 0, count( $meta_keys ), '%s' ) );
|
||||
$entity_id_string = implode( ', ', array_fill( 0, count( $entity_ids ), '%d' ) );
|
||||
|
||||
// phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared, WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare -- $meta_table_relational_key, $meta_key_column, $meta_value_column and $meta_table is escaped for backticks. $entity_id_string and $meta_column_string are placeholders.
|
||||
$query = $wpdb->prepare(
|
||||
"
|
||||
SELECT `$meta_table_relational_key` as entity_id, `$meta_key_column` as meta_key, `$meta_value_column` as meta_value
|
||||
FROM `$meta_table`
|
||||
WHERE
|
||||
`$meta_table_relational_key` IN ( $entity_id_string )
|
||||
AND `$meta_key_column` IN ( $meta_column_string );
|
||||
",
|
||||
array_merge(
|
||||
$entity_ids,
|
||||
$meta_keys
|
||||
)
|
||||
);
|
||||
|
||||
// phpcs:enable
|
||||
|
||||
return $query;
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper function to validate and combine data before we try to insert.
|
||||
*
|
||||
* @param array $entity_data Data from source table.
|
||||
* @param array $meta_data Data from meta table.
|
||||
*
|
||||
* @return array[] Validated and combined data with errors.
|
||||
*/
|
||||
private function process_and_sanitize_data( array $entity_data, array $meta_data ): array {
|
||||
$sanitized_entity_data = array();
|
||||
$error_records = array();
|
||||
$this->process_and_sanitize_entity_data( $sanitized_entity_data, $error_records, $entity_data );
|
||||
$this->processs_and_sanitize_meta_data( $sanitized_entity_data, $error_records, $meta_data );
|
||||
|
||||
return array(
|
||||
'data' => $sanitized_entity_data,
|
||||
'errors' => $error_records,
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper method to sanitize core source table.
|
||||
*
|
||||
* @param array $sanitized_entity_data Array containing sanitized data for insertion.
|
||||
* @param array $error_records Error records.
|
||||
* @param array $entity_data Original source data.
|
||||
*/
|
||||
private function process_and_sanitize_entity_data( array &$sanitized_entity_data, array &$error_records, array $entity_data ): void {
|
||||
foreach ( $entity_data as $entity ) {
|
||||
$row_data = array();
|
||||
foreach ( $this->core_column_mapping as $column_name => $schema ) {
|
||||
$custom_table_column_name = $schema['destination'] ?? $column_name;
|
||||
$value = $entity->$column_name;
|
||||
$value = $this->validate_data( $value, $schema['type'] );
|
||||
if ( is_wp_error( $value ) ) {
|
||||
$error_records[ $entity->primary_key_id ][ $custom_table_column_name ] = $value->get_error_code();
|
||||
} else {
|
||||
$row_data[ $custom_table_column_name ] = $value;
|
||||
}
|
||||
}
|
||||
$sanitized_entity_data[ $entity->entity_meta_rel_id ] = $row_data;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper method to sanitize soure meta data.
|
||||
*
|
||||
* @param array $sanitized_entity_data Array containing sanitized data for insertion.
|
||||
* @param array $error_records Error records.
|
||||
* @param array $meta_data Original source data.
|
||||
*/
|
||||
private function processs_and_sanitize_meta_data( array &$sanitized_entity_data, array &$error_records, array $meta_data ): void {
|
||||
foreach ( $meta_data as $datum ) {
|
||||
$column_schema = $this->meta_column_mapping[ $datum->meta_key ];
|
||||
if ( isset( $sanitized_entity_data[ $datum->entity_id ][ $column_schema['destination'] ] ) ) {
|
||||
// We pick only the first meta if there are duplicates for a flat column, to be consistent with WP core behavior in handing duplicate meta which are marked as unique.
|
||||
continue;
|
||||
}
|
||||
$value = $this->validate_data( $datum->meta_value, $column_schema['type'] );
|
||||
if ( is_wp_error( $value ) ) {
|
||||
$error_records[ $datum->entity_id ][ $column_schema['destination'] ] = "{$value->get_error_code()}: {$value->get_error_message()}";
|
||||
} else {
|
||||
$sanitized_entity_data[ $datum->entity_id ][ $column_schema['destination'] ] = $value;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Validate and transform data so that we catch as many errors as possible before inserting.
|
||||
*
|
||||
* @param mixed $value Actual data value.
|
||||
* @param string $type Type of data, could be decimal, int, date, string.
|
||||
*
|
||||
* @return float|int|mixed|string|\WP_Error
|
||||
*/
|
||||
private function validate_data( $value, string $type ) {
|
||||
switch ( $type ) {
|
||||
case 'decimal':
|
||||
$value = wc_format_decimal( $value, false, true );
|
||||
break;
|
||||
case 'int':
|
||||
$value = (int) $value;
|
||||
break;
|
||||
case 'bool':
|
||||
$value = wc_string_to_bool( $value );
|
||||
break;
|
||||
case 'date':
|
||||
try {
|
||||
if ( '' === $value ) {
|
||||
$value = null;
|
||||
} else {
|
||||
$value = ( new \DateTime( $value ) )->format( 'Y-m-d H:i:s' );
|
||||
}
|
||||
} catch ( \Exception $e ) {
|
||||
return new \WP_Error( $e->getMessage() );
|
||||
}
|
||||
break;
|
||||
case 'date_epoch':
|
||||
try {
|
||||
if ( '' === $value ) {
|
||||
$value = null;
|
||||
} else {
|
||||
$value = ( new \DateTime( "@$value" ) )->format( 'Y-m-d H:i:s' );
|
||||
}
|
||||
} catch ( \Exception $e ) {
|
||||
return new \WP_Error( $e->getMessage() );
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
return $value;
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify whether data was migrated properly for given IDs.
|
||||
*
|
||||
* @param array $source_ids List of source IDs.
|
||||
*
|
||||
* @return array List of IDs along with columns that failed to migrate.
|
||||
*/
|
||||
public function verify_migrated_data( array $source_ids ) : array {
|
||||
global $wpdb;
|
||||
$query = $this->build_verification_query( $source_ids );
|
||||
// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- $query should already be prepared.
|
||||
$results = $wpdb->get_results( $query, ARRAY_A );
|
||||
$results = $this->fill_source_metadata( $results, $source_ids );
|
||||
return $this->verify_data( $results );
|
||||
}
|
||||
|
||||
/**
|
||||
* Generate query to fetch data from both source and destination tables. Use the results in `verify_data` to verify if data was migrated properly.
|
||||
*
|
||||
* @param array $source_ids Array of IDs in source table.
|
||||
*
|
||||
* @return string SELECT statement.
|
||||
*/
|
||||
protected function build_verification_query( $source_ids ) {
|
||||
$source_table = $this->schema_config['source']['entity']['table_name'];
|
||||
$destination_table = $this->schema_config['destination']['table_name'];
|
||||
$destination_source_rel_column = $this->schema_config['destination']['source_rel_column'];
|
||||
$source_destination_rel_column = $this->schema_config['source']['entity']['destination_rel_column'];
|
||||
|
||||
$source_destination_join_clause = "$destination_table ON $destination_table.$destination_source_rel_column = $source_table.$source_destination_rel_column";
|
||||
|
||||
$meta_select_clauses = array();
|
||||
$source_select_clauses = array();
|
||||
$destination_select_clauses = array();
|
||||
|
||||
foreach ( $this->core_column_mapping as $column_name => $schema ) {
|
||||
$source_select_column = isset( $schema['select_clause'] ) ? $schema['select_clause'] : "$source_table.$column_name";
|
||||
$source_select_clauses[] = "$source_select_column as {$source_table}_{$column_name}";
|
||||
$destination_select_clauses[] = "$destination_table.{$schema['destination']} as {$destination_table}_{$schema['destination']}";
|
||||
}
|
||||
|
||||
foreach ( $this->meta_column_mapping as $meta_key => $schema ) {
|
||||
$destination_select_clauses[] = "$destination_table.{$schema['destination']} as {$destination_table}_{$schema['destination']}";
|
||||
}
|
||||
|
||||
$select_clause = implode( ', ', array_merge( $source_select_clauses, $meta_select_clauses, $destination_select_clauses ) );
|
||||
|
||||
$where_clause = $this->get_where_clause_for_verification( $source_ids );
|
||||
|
||||
return "
|
||||
SELECT $select_clause
|
||||
FROM $source_table
|
||||
LEFT JOIN $source_destination_join_clause
|
||||
WHERE $where_clause
|
||||
";
|
||||
}
|
||||
|
||||
/**
|
||||
* Fill source metadata for given IDs for verification. This will return filled data in following format:
|
||||
* [
|
||||
* {
|
||||
* $source_table_$source_column: $value,
|
||||
* ...,
|
||||
* $destination_table_$destination_column: $value,
|
||||
* ...
|
||||
* meta_source_{$destination_column_name1}: $meta_value,
|
||||
* ...
|
||||
* },
|
||||
* ...
|
||||
* ]
|
||||
*
|
||||
* @param array $results Entity data from both source and destination table.
|
||||
* @param array $source_ids List of source IDs.
|
||||
*
|
||||
* @return array Filled $results param with source metadata.
|
||||
*/
|
||||
private function fill_source_metadata( $results, $source_ids ) {
|
||||
global $wpdb;
|
||||
$meta_table = $this->schema_config['source']['meta']['table_name'];
|
||||
$meta_entity_id_column = $this->schema_config['source']['meta']['entity_id_column'];
|
||||
$meta_key_column = $this->schema_config['source']['meta']['meta_key_column'];
|
||||
$meta_value_column = $this->schema_config['source']['meta']['meta_value_column'];
|
||||
$meta_id_column = $this->schema_config['source']['meta']['meta_id_column'];
|
||||
$meta_columns = array_keys( $this->meta_column_mapping );
|
||||
|
||||
$meta_columns_placeholder = implode( ', ', array_fill( 0, count( $meta_columns ), '%s' ) );
|
||||
$source_ids_placeholder = implode( ', ', array_fill( 0, count( $source_ids ), '%d' ) );
|
||||
|
||||
$query = $wpdb->prepare(
|
||||
// phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared, WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare
|
||||
"SELECT $meta_entity_id_column as entity_id, $meta_key_column as meta_key, $meta_value_column as meta_value
|
||||
FROM $meta_table
|
||||
WHERE $meta_entity_id_column IN ($source_ids_placeholder)
|
||||
AND $meta_key_column IN ($meta_columns_placeholder)
|
||||
ORDER BY $meta_id_column ASC",
|
||||
array_merge( $source_ids, $meta_columns )
|
||||
);
|
||||
//phpcs:enable
|
||||
|
||||
// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
|
||||
$meta_data = $wpdb->get_results( $query, ARRAY_A );
|
||||
$source_metadata_rows = array();
|
||||
foreach ( $meta_data as $meta_datum ) {
|
||||
if ( ! isset( $source_metadata_rows[ $meta_datum['entity_id'] ] ) ) {
|
||||
$source_metadata_rows[ $meta_datum['entity_id'] ] = array();
|
||||
}
|
||||
$destination_column = $this->meta_column_mapping[ $meta_datum['meta_key'] ]['destination'];
|
||||
$alias = "meta_source_{$destination_column}";
|
||||
if ( isset( $source_metadata_rows[ $meta_datum['entity_id'] ][ $alias ] ) ) {
|
||||
// Only process first value, duplicate values mapping to flat columns are ignored to be consistent with WP core.
|
||||
continue;
|
||||
}
|
||||
$source_metadata_rows[ $meta_datum['entity_id'] ][ $alias ] = $meta_datum['meta_value'];
|
||||
}
|
||||
foreach ( $results as $index => $result_row ) {
|
||||
$source_id = $result_row[ $this->schema_config['source']['entity']['table_name'] . '_' . $this->schema_config['source']['entity']['primary_key'] ];
|
||||
$results[ $index ] = array_merge( $result_row, ( $source_metadata_rows[ $source_id ] ?? array() ) );
|
||||
}
|
||||
return $results;
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper function to generate where clause for fetching data for verification.
|
||||
*
|
||||
* @param array $source_ids Array of IDs from source table.
|
||||
*
|
||||
* @return string WHERE clause.
|
||||
*/
|
||||
protected function get_where_clause_for_verification( $source_ids ) {
|
||||
global $wpdb;
|
||||
$source_primary_id_column = $this->schema_config['source']['entity']['primary_key'];
|
||||
$source_table = $this->schema_config['source']['entity']['table_name'];
|
||||
$source_ids_placeholder = implode( ', ', array_fill( 0, count( $source_ids ), '%d' ) );
|
||||
|
||||
return $wpdb->prepare(
|
||||
// phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared, WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare
|
||||
"$source_table.$source_primary_id_column IN ($source_ids_placeholder)",
|
||||
$source_ids
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify data from both source and destination tables and check if they were migrated properly.
|
||||
*
|
||||
* @param array $collected_data Collected data in array format, should be in same structure as returned from query in `$this->build_verification_query`.
|
||||
*
|
||||
* @return array Array of failed IDs if any, along with columns/meta_key names.
|
||||
*/
|
||||
protected function verify_data( $collected_data ) {
|
||||
$failed_ids = array();
|
||||
foreach ( $collected_data as $row ) {
|
||||
$failed_ids = $this->verify_entity_columns( $row, $failed_ids );
|
||||
$failed_ids = $this->verify_meta_columns( $row, $failed_ids );
|
||||
}
|
||||
|
||||
return $failed_ids;
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper method to verify and compare core columns.
|
||||
*
|
||||
* @param array $row Both migrated and source data for a single row.
|
||||
* @param array $failed_ids Array of failed IDs.
|
||||
*
|
||||
* @return array Array of failed IDs if any, along with columns/meta_key names.
|
||||
*/
|
||||
private function verify_entity_columns( $row, $failed_ids ) {
|
||||
$primary_key_column = "{$this->schema_config['source']['entity']['table_name']}_{$this->schema_config['source']['entity']['primary_key']}";
|
||||
foreach ( $this->core_column_mapping as $column_name => $schema ) {
|
||||
$source_alias = "{$this->schema_config['source']['entity']['table_name']}_$column_name";
|
||||
$destination_alias = "{$this->schema_config['destination']['table_name']}_{$schema['destination']}";
|
||||
$row = $this->pre_process_row( $row, $schema, $source_alias, $destination_alias );
|
||||
if ( $row[ $source_alias ] !== $row[ $destination_alias ] ) {
|
||||
if ( ! isset( $failed_ids[ $row[ $primary_key_column ] ] ) ) {
|
||||
$failed_ids[ $row[ $primary_key_column ] ] = array();
|
||||
}
|
||||
$failed_ids[ $row[ $primary_key_column ] ][] = array(
|
||||
'column' => $column_name,
|
||||
'original_value' => $row[ $source_alias ],
|
||||
'new_value' => $row[ $destination_alias ],
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
return $failed_ids;
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper method to verify meta columns.
|
||||
*
|
||||
* @param array $row Both migrated and source data for a single row.
|
||||
* @param array $failed_ids Array of failed IDs.
|
||||
*
|
||||
* @return array Array of failed IDs if any, along with columns/meta_key names.
|
||||
*/
|
||||
private function verify_meta_columns( $row, $failed_ids ) {
|
||||
$primary_key_column = "{$this->schema_config['source']['entity']['table_name']}_{$this->schema_config['source']['entity']['primary_key']}";
|
||||
foreach ( $this->meta_column_mapping as $meta_key => $schema ) {
|
||||
$meta_alias = "meta_source_{$schema['destination']}";
|
||||
$destination_alias = "{$this->schema_config['destination']['table_name']}_{$schema['destination']}";
|
||||
$row = $this->pre_process_row( $row, $schema, $meta_alias, $destination_alias );
|
||||
if ( $row[ $meta_alias ] !== $row[ $destination_alias ] ) {
|
||||
if ( ! isset( $failed_ids[ $row[ $primary_key_column ] ] ) ) {
|
||||
$failed_ids[ $row[ $primary_key_column ] ] = array();
|
||||
}
|
||||
$failed_ids[ $row[ $primary_key_column ] ][] = array(
|
||||
'column' => $meta_key,
|
||||
'original_value' => $row[ $meta_alias ],
|
||||
'new_value' => $row[ $destination_alias ],
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
return $failed_ids;
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper method to pre-process rows to make sure we parse the correct type.
|
||||
*
|
||||
* @param array $row Both migrated and source data for a single row.
|
||||
* @param array $schema Column schema.
|
||||
* @param string $alias Name of source column.
|
||||
* @param string $destination_alias Name of destination column.
|
||||
*
|
||||
* @return array Processed row.
|
||||
*/
|
||||
private function pre_process_row( $row, $schema, $alias, $destination_alias ) {
|
||||
if ( ! isset( $row[ $alias ] ) ) {
|
||||
$row[ $alias ] = $this->get_type_defaults( $schema['type'] );
|
||||
}
|
||||
if ( in_array( $schema['type'], array( 'int', 'decimal' ), true ) ) {
|
||||
if ( '' === $row[ $alias ] || null === $row[ $alias ] ) {
|
||||
$row[ $alias ] = 0; // $wpdb->prepare forces empty values to 0.
|
||||
}
|
||||
$row[ $alias ] = wc_format_decimal( $row[ $alias ], false, true );
|
||||
$row[ $destination_alias ] = wc_format_decimal( $row[ $destination_alias ], false, true );
|
||||
}
|
||||
if ( 'bool' === $schema['type'] ) {
|
||||
$row[ $alias ] = wc_string_to_bool( $row[ $alias ] );
|
||||
$row[ $destination_alias ] = wc_string_to_bool( $row[ $destination_alias ] );
|
||||
}
|
||||
if ( 'date_epoch' === $schema['type'] ) {
|
||||
if ( '' === $row[ $alias ] || null === $row[ $alias ] ) {
|
||||
$row[ $alias ] = null;
|
||||
} else {
|
||||
$row[ $alias ] = ( new \DateTime( "@{$row[ $alias ]}" ) )->format( 'Y-m-d H:i:s' );
|
||||
}
|
||||
if ( '0000-00-00 00:00:00' === $row[ $destination_alias ] ) {
|
||||
$row[ $destination_alias ] = null;
|
||||
}
|
||||
}
|
||||
return $row;
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper method to get default value of a type.
|
||||
*
|
||||
* @param string $type Type.
|
||||
*
|
||||
* @return mixed Default value.
|
||||
*/
|
||||
private function get_type_defaults( $type ) {
|
||||
switch ( $type ) {
|
||||
case 'float':
|
||||
case 'int':
|
||||
return 0;
|
||||
case 'string':
|
||||
return '';
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user