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Add a "--copy" flag to "bin/files migrate"

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Summary:
Ref T11596. When exporting data from the Phacility cluster, we `bin/files migrate` data from S3 into a database dump on the `aux` tier.

With current semantics, this //moves// the data and destroys it in S3.

Add a `--copy` flag to //copy// the data instead. This leaves the old copy around, which is what we want for exports.

Test Plan:
  - Ran `bin/files migrate` to go from `blob` to `disk` with `--copy`. Verified a copy was left in the database.
  - Copied it back, verified a copy was left on disk (total: 2 database copies, 1 disk copy).
  - Moved it back without copy, verified database was destroyed and disk was created (total: 1 database copy, 2 disk copies).
  - Moved it back without copy, verified local disk was destroyed and blob was created (total: 2 datbabase copies, 1 disk copy).

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T11596

Differential Revision: https://secure.phabricator.com/D16497
This commit is contained in:
epriestley 2016-09-06 07:29:59 -07:00
parent b1932f1f56
commit af5769a6be
2 changed files with 19 additions and 6 deletions
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10
src/applications/files/management/PhabricatorFilesManagementMigrateWorkflow.php
View file

@ -36,6 +36,12 @@ final class PhabricatorFilesManagementMigrateWorkflow
'name' => 'all',
'help' => pht('Migrate all files.'),
),
array(
'name' => 'copy',
'help' => pht(
'Copy file data instead of moving it: after migrating, do not '.
'remove the old data even if it is no longer referenced.'),
),
array(
'name' => 'names',
'wildcard' => true,
@ -70,6 +76,8 @@ final class PhabricatorFilesManagementMigrateWorkflow
$min_size = (int)$args->getArg('min-size');
$max_size = (int)$args->getArg('max-size');
$is_copy = $args->getArg('copy');
$failed = array();
$engines = PhabricatorFileStorageEngine::loadAllEngines();
$total_bytes = 0;
@ -158,7 +166,7 @@ final class PhabricatorFilesManagementMigrateWorkflow
if ($is_dry_run) {
// Do nothing, this is a dry run.
} else {
$file->migrateToEngine($target_engine);
$file->migrateToEngine($target_engine, $is_copy);
}
$total_files += 1;

15
src/applications/files/storage/PhabricatorFile.php
View file

@ -422,7 +422,10 @@ final class PhabricatorFile extends PhabricatorFileDAO
return self::buildFromFileData($data, $params);
}
public function migrateToEngine(PhabricatorFileStorageEngine $engine) {
public function migrateToEngine(
PhabricatorFileStorageEngine $engine,
$make_copy) {
if (!$this->getID() || !$this->getStorageHandle()) {
throw new Exception(
pht("You can not migrate a file which hasn't yet been saved."));
@ -446,10 +449,12 @@ final class PhabricatorFile extends PhabricatorFileDAO
$this->setStorageHandle($new_handle);
$this->save();
$this->deleteFileDataIfUnused(
$old_engine,
$old_identifier,
$old_handle);
if (!$make_copy) {
$this->deleteFileDataIfUnused(
$old_engine,
$old_identifier,
$old_handle);
}
return $this;
}