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phorge/src/infrastructure/storage/patch/PhabricatorSQLPatchList.php
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PhabricatorSQLPatchList.php
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<?php
abstract class PhabricatorSQLPatchList extends Phobject {
abstract public function getNamespace();
abstract public function getPatches();
/**
* Examine a directory for `.php` and `.sql` files and build patch
* specifications for them.
*/
protected function buildPatchesFromDirectory($directory) {
$patch_list = Filesystem::listDirectory(
$directory,
$include_hidden = false);
sort($patch_list);
$patches = array();
foreach ($patch_list as $patch) {
$matches = null;
if (!preg_match('/\.(sql|php)$/', $patch, $matches)) {
throw new Exception(
pht(
'Unknown patch "%s" in "%s", expected ".php" or ".sql" suffix.',
$patch,
$directory));
}
$patches[$patch] = array(
'type' => $matches[1],
'name' => rtrim($directory, '/').'/'.$patch,
);
}
return $patches;
}
final public static function buildAllPatches() {
$patch_lists = id(new PhutilClassMapQuery())
->setAncestorClass(__CLASS__)
->setUniqueMethod('getNamespace')
->execute();
$specs = array();
$seen_namespaces = array();
foreach ($patch_lists as $patch_list) {
$last_key = null;
foreach ($patch_list->getPatches() as $key => $patch) {
if (!is_array($patch)) {
throw new Exception(
pht(
"%s '%s' has a patch '%s' which is not an array.",
__CLASS__,
get_class($patch_list),
$key));
}
$valid = array(
'type' => true,
'name' => true,
'after' => true,
'legacy' => true,
'dead' => true,
);
foreach ($patch as $pkey => $pval) {
if (empty($valid[$pkey])) {
throw new Exception(
pht(
"%s '%s' has a patch, '%s', with an unknown property, '%s'.".
"Patches must have only valid keys: %s.",
__CLASS__,
get_class($patch_list),
$key,
$pkey,
implode(', ', array_keys($valid))));
}
}
if (is_numeric($key)) {
throw new Exception(
pht(
"%s '%s' has a patch with a numeric key, '%s'. ".
"Patches must use string keys.",
__CLASS__,
get_class($patch_list),
$key));
}
if (strpos($key, ':') !== false) {
throw new Exception(
pht(
"%s '%s' has a patch with a colon in the key name, '%s'. ".
"Patch keys may not contain colons.",
__CLASS__,
get_class($patch_list),
$key));
}
$namespace = $patch_list->getNamespace();
$full_key = "{$namespace}:{$key}";
if (isset($specs[$full_key])) {
throw new Exception(
pht(
"%s '%s' has a patch '%s' which duplicates an ".
"existing patch key.",
__CLASS__,
get_class($patch_list),
$key));
}
$patch['key'] = $key;
$patch['fullKey'] = $full_key;
$patch['dead'] = (bool)idx($patch, 'dead', false);
if (isset($patch['legacy'])) {
if ($namespace != 'phabricator') {
throw new Exception(
pht(
"Only patches in the '%s' namespace may contain '%s' keys.",
'phabricator',
'legacy'));
}
} else {
$patch['legacy'] = false;
}
if (!array_key_exists('after', $patch)) {
if ($last_key === null) {
throw new Exception(
pht(
"Patch '%s' is missing key 'after', and is the first patch ".
"in the patch list '%s', so its application order can not be ".
"determined implicitly. The first patch in a patch list must ".
"list the patch or patches it depends on explicitly.",
$full_key,
get_class($patch_list)));
} else {
$patch['after'] = array($last_key);
}
}
$last_key = $full_key;
foreach ($patch['after'] as $after_key => $after) {
if (strpos($after, ':') === false) {
$patch['after'][$after_key] = $namespace.':'.$after;
}
}
$type = idx($patch, 'type');
if (!$type) {
throw new Exception(
pht(
"Patch '%s' is missing key '%s'. Every patch must have a type.",
"{$namespace}:{$key}",
'type'));
}
switch ($type) {
case 'db':
case 'sql':
case 'php':
break;
default:
throw new Exception(
pht(
"Patch '%s' has unknown patch type '%s'.",
"{$namespace}:{$key}",
$type));
}
$specs[$full_key] = $patch;
}
}
foreach ($specs as $key => $patch) {
foreach ($patch['after'] as $after) {
if (empty($specs[$after])) {
throw new Exception(
pht(
"Patch '%s' references nonexistent dependency, '%s'. ".
"Patches may only depend on patches which actually exist.",
$key,
$after));
}
}
}
$patches = array();
foreach ($specs as $full_key => $spec) {
$patches[$full_key] = new PhabricatorStoragePatch($spec);
}
// TODO: Detect cycles?
return $patches;
}
}

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