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<?php |
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namespace Sunnysideup\MigrateData\Tasks; |
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use SilverStripe\ORM\DB; |
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class DraftVsLive extends MigrateDataTaskBase |
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{ |
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protected $title = 'Compare Drafts vs Live'; |
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protected $description = 'Go through every table and compare DRAFT vs Live'; |
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protected $enabled = true; |
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protected $selectedTables = []; |
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protected $missingColumns = []; |
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protected $deleteLiveOnlyRecords = false; |
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protected function performMigration() |
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{ |
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//get tables in DB |
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$dbTablesPresent = []; |
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if (empty($this->selectedTables)) { |
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$rows = DB::query('SHOW tables'); |
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foreach ($rows as $row) { |
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$table = array_pop($row); |
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$dbTablesPresent[$table] = $table; |
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} |
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} else { |
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$dbTablesPresent = $this->selectedTables; |
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} |
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foreach ($dbTablesPresent as $table) { |
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$this->missingColumns[$table] = []; |
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$liveTable = $table . '_Live'; |
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if ($this->tableExists($liveTable)) { |
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if ($this->deleteLiveOnlyRecords) { |
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$this->deleteLiveOnlyRecords($table, $liveTable); |
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} |
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//check count |
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$draftCount = (int) DB::query('SELECT COUNT(ID) FROM ' . $table . ' ORDER BY ID;')->value(); |
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$liveCount = (int) DB::query('SELECT COUNT(ID) FROM ' . $liveTable . ' ORDER BY ID;')->value(); |
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if ((int) $draftCount !== (int) $liveCount) { |
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$this->flushNow( |
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'TABLE ' . $table . ' count (' . $draftCount . ') |
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is not the same as count for ' . $liveTable . ' (' . $liveCount . '), |
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DIFFERENCE: ' . ($draftCount - $liveCount) . ' more entries on DRAFT.', |
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'deleted' |
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); |
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} else { |
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$this->flushNow('TABLE ' . $table . ' DRAFT and LIVE count is identical ...', 'created'); |
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} |
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//check columns |
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$this->compareColumnsOuter($table, $liveTable); |
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$allOk = true; |
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$draftRows = DB::query('SELECT * FROM ' . $table . ' ORDER BY ID;'); |
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//check rows |
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foreach ($draftRows as $draftRow) { |
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$allOk = $this->compareOneRow($draftRow, $table, $liveTable); |
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} |
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if ($allOk) { |
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$this->flushNow('... For matching rows, DRAFT and LIVE are identical.'); |
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} |
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} else { |
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$this->flushNow('No Live version for ' . $table); |
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} |
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} |
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} |
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protected function compareOneRow($draftRow, $table, $liveTable) |
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{ |
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$allOk = true; |
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$liveRows = DB::query('SELECT * FROM ' . $liveTable . ' WHERE ID = ' . $draftRow['ID'] . ';'); |
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foreach ($liveRows as $liveRow) { |
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$results = array_diff($draftRow, $liveRow) + array_diff($liveRow, $draftRow); |
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foreach (array_keys($results) as $key) { |
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if (! isset($draftRow[$key])) { |
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$draftRow[$key] = '???'; |
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} |
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if (! isset($liveRow[$key])) { |
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$liveRow[$key] = '???'; |
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} |
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$allOk = false; |
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$this->flushNow( |
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'... ... DRAFT !== LIVE for <strong>' . $table . '</strong>, ' . |
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'ID <strong>' . $draftRow['ID'] . '</strong>, ' . |
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'FIELD: <strong>' . $key . '</strong>: |
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<span style="color: purple">' . strip_tags(substr(print_r($draftRow[$key], 1), 0, 100)) . '</span> !== |
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<span style="color: orange">' . strip_tags(substr(print_r($liveRow[$key], 1), 0, 100)) . '</span> ', |
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'deleted' |
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); |
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} |
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} |
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return $allOk; |
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} |
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protected function compareColumnsOuter($table, $liveTable, $backwards = false) |
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{ |
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$draftRows1 = DB::query('SELECT * FROM ' . $table . ' ORDER BY ID LIMIT 1;'); |
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$LiveRows1 = DB::query('SELECT * FROM ' . $liveTable . ' ORDER BY ID LIMIT 1;'); |
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foreach ($draftRows1 as $draftRow) { |
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foreach ($LiveRows1 as $liveRow) { |
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$this->compareColumnsInner($draftRow, $liveRow, $table); |
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} |
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} |
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} |
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protected function compareColumnsInner($rowA, $rowB, $table, $backwards = false) |
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{ |
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$tableA = 'DRAFT'; |
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$tableB = 'LIVE'; |
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if ($backwards) { |
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$tableB = 'DRAFT'; |
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$tableA = 'LIVE'; |
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} |
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$result = array_diff_key($rowA, $rowB); |
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foreach (array_keys($result) as $key) { |
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$this->missingColumns[$table][$key] = $key; |
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$this->flushNow( |
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'... Found a column in the ' . $tableA . ' table that did not match the ' . $tableB . ' table: ' . $key, |
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'deleted' |
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); |
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} |
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if (! $backwards) { |
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$this->compareColumnsInner($rowB, $rowA, $table, true); |
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} |
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} |
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protected function deleteLiveOnlyRecords(string $tableNameDraft, string $tableNameLive) |
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{ |
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$rows = DB::query(' |
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SELECT "' . $tableNameLive . '"."ID" |
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FROM "' . $tableNameLive . '" |
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LEFT JOIN "' . $tableNameDraft . '" ON "' . $tableNameLive . '"."ID" = "' . $tableNameDraft . '"."ID" |
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WHERE "' . $tableNameDraft . '"."ID" IS NULL; |
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'); |
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foreach ($rows as $row) { |
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$this->flushNow( |
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'Deleting from ' . $tableNameLive . ' where ID = ' . $row['ID'], |
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'deleted' |
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); |
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DB::query(' |
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DELETE FROM "' . $tableNameLive . '" WHERE ID = ' . $row['ID'] . '; |
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'); |
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} |
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} |
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} |
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sunnysideup /
silverstripe-migration-task
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