public function getDiff($table, $key)
{
Logger::info("Now calculating data diff for table `{$table}`");
$diffSequence1 = $this->getOldNewDiff($table, $key);
$diffSequence2 = $this->getChangeDiff($table, $key);
$diffSequence = array_merge($diffSequence1, $diffSequence2);
return $diffSequence;
}
public function output()
{
$content = $this->getComments();
$content .= $this->getContent();
if (is_null($this->params->output)) {
Logger::info("Writing migration file to " . getcwd() . "/migration.sql");
file_put_contents('migration.sql', $content);
} else {
Logger::info("Writing migration file to " . $this->params->output);
return file_put_contents($this->params->output, $content);
}
}
public function getOldData($table)
{
Logger::info("Now getting old data from table `{$table}`");
$diffSequence = [];
$iterator = $this->getIterator('target', $table);
$key = $this->manager->getKey('target', $table);
while ($iterator->hasNext()) {
$data = $iterator->next(ArrayDiff::$size);
foreach ($data as $entry) {
$diffSequence[] = new DeleteData($table, ['keys' => array_only($entry, $key), 'diff' => new \Diff\DiffOp\DiffOpRemove($entry)]);
}
}
return $diffSequence;
}
public function getDiff($table, $key)
{
Logger::info("Now calculating data diff for table `{$table}`");
$diffs = $this->getDataDiff($table, $key);
$diffSequence = [];
foreach ($diffs as $name => $diff) {
if ($diff['diff'] instanceof \Diff\DiffOp\DiffOpRemove) {
$diffSequence[] = new DeleteData($table, $diff);
} else {
if (is_array($diff['diff'])) {
$diffSequence[] = new UpdateData($table, $diff);
} else {
if ($diff['diff'] instanceof \Diff\DiffOp\DiffOpAdd) {
$diffSequence[] = new InsertData($table, $diff);
}
}
}
}
return $diffSequence;
}
public function run()
{
// Increase memory limit
ini_set('memory_limit', '512M');
try {
// Params
$paramsFactory = new ParamsFactory();
$params = $paramsFactory->get();
// Diff
$diffCalculator = new DiffCalculator();
$diff = $diffCalculator->getDiff($params);
// Empty diff
if (empty($diff['schema']) && empty($diff['data'])) {
Logger::info("Identical resources");
} else {
// SQL
$sqlGenerator = new SQLGenerator($diff);
$up = '';
$down = '';
if ($params->include !== 'down') {
$up = $sqlGenerator->getUp();
}
if ($params->include !== 'up') {
$down = $sqlGenerator->getDown();
}
// Generate
$templater = new Templater($params, $up, $down);
$templater->output();
}
Logger::success("Completed");
} catch (\Exception $e) {
if ($e instanceof BaseException) {
Logger::error($e->getMessage(), true);
} else {
Logger::error("Unexpected error: ");
throw $e;
}
}
}
public function getDown()
{
Logger::info("Now generating DOWN migration");
$diff = $this->diffSorter->sort($this->diff, 'down');
return MigrationGenerator::generate($diff, 'getDown');
}
public function getDiff($table)
{
Logger::info("Now calculating schema diff for table `{$table}`");
$diffSequence = [];
$sourceSchema = $this->getSchema('source', $table);
$targetSchema = $this->getSchema('target', $table);
// Engine
$sourceEngine = $sourceSchema['engine'];
$targetEngine = $targetSchema['engine'];
if ($sourceEngine != $targetEngine) {
$diffSequence[] = new AlterTableEngine($table, $sourceEngine, $targetEngine);
}
// Collation
$sourceCollation = $sourceSchema['collation'];
$targetCollation = $targetSchema['collation'];
if ($sourceCollation != $targetCollation) {
$diffSequence[] = new AlterTableCollation($table, $sourceCollation, $targetCollation);
}
// Columns
$sourceColumns = $sourceSchema['columns'];
$targetColumns = $targetSchema['columns'];
$differ = new MapDiffer();
$diffs = $differ->doDiff($targetColumns, $sourceColumns);
foreach ($diffs as $column => $diff) {
if ($diff instanceof \Diff\DiffOp\DiffOpRemove) {
$diffSequence[] = new AlterTableDropColumn($table, $column, $diff);
} else {
if ($diff instanceof \Diff\DiffOp\DiffOpChange) {
$diffSequence[] = new AlterTableChangeColumn($table, $column, $diff);
} else {
if ($diff instanceof \Diff\DiffOp\DiffOpAdd) {
$diffSequence[] = new AlterTableAddColumn($table, $column, $diff);
}
}
}
}
// Keys
$sourceKeys = $sourceSchema['keys'];
$targetKeys = $targetSchema['keys'];
$differ = new MapDiffer();
$diffs = $differ->doDiff($targetKeys, $sourceKeys);
foreach ($diffs as $key => $diff) {
if ($diff instanceof \Diff\DiffOp\DiffOpRemove) {
$diffSequence[] = new AlterTableDropKey($table, $key, $diff);
} else {
if ($diff instanceof \Diff\DiffOp\DiffOpChange) {
$diffSequence[] = new AlterTableChangeKey($table, $key, $diff);
} else {
if ($diff instanceof \Diff\DiffOp\DiffOpAdd) {
$diffSequence[] = new AlterTableAddKey($table, $key, $diff);
}
}
}
}
// Constraints
$sourceConstraints = $sourceSchema['constraints'];
$targetConstraints = $targetSchema['constraints'];
$differ = new MapDiffer();
$diffs = $differ->doDiff($targetConstraints, $sourceConstraints);
foreach ($diffs as $name => $diff) {
if ($diff instanceof \Diff\DiffOp\DiffOpRemove) {
$diffSequence[] = new AlterTableDropConstraint($table, $name, $diff);
} else {
if ($diff instanceof \Diff\DiffOp\DiffOpChange) {
$diffSequence[] = new AlterTableChangeConstraint($table, $name, $diff);
} else {
if ($diff instanceof \Diff\DiffOp\DiffOpAdd) {
$diffSequence[] = new AlterTableAddConstraint($table, $name, $diff);
}
}
}
}
return $diffSequence;
}
