MigrationManager::run() - Code Metrics - Inspection of "MigrationManager no longer cares about used profil..." - console-helpers/svn-buddy - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 3d89d6...b1b27b )

by Alexander

created 2016-06-09 18:48 UTC

MigrationManager::run() A

↳ Parent: MigrationManager

Complexity

Conditions	1
Paths	1

Size

Total Lines	14
Code Lines	9

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	10
CRAP Score	1

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	14
ccs	10
cts	10
cp	1
rs	9.4285
nc	1
cc	1
eloc	9
nop	1
crap	1

<?php
/**
 * This file is part of the DB-Migration library.
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 *
 * @copyright Alexander Obuhovich <[email protected]>
 * @link      https://github.com/console-helpers/db-migration
 */

namespace ConsoleHelpers\DatabaseMigration;


use ConsoleHelpers\SVNBuddy\Database\StatementProfiler;

class MigrationManager
{

	/**
	 * Migrations directory.
	 *
	 * @var string
	 */
	private $_migrationsDirectory;

	/**
	 * Container.
	 *
	 * @var \ArrayAccess
	 */
	private $_container;

	/**
	 * Migration manager context.
	 *
	 * @var MigrationContext
	 */
	private $_context;

	/**
	 * Migration runners.
	 *
	 * @var AbstractMigrationRunner[]
	 */
	private $_migrationRunners = array();

	/**
	 * Creates migration manager instance.
	 *
	 * @param string       $migrations_directory Migrations directory.
	 * @param \ArrayAccess $container            Container.
	 *
	 * @throws \InvalidArgumentException When migrations directory does not exist.
	 */
	public function __construct($migrations_directory, \ArrayAccess $container)
	{
		if ( !file_exists($migrations_directory) || !is_dir($migrations_directory) ) {
			throw new \InvalidArgumentException(
				'The "' . $migrations_directory . '" does not exist or not a directory.'
			);
		}

		$this->_migrationsDirectory = $migrations_directory;
		$this->_container = $container;
	}

	/**
	 * Registers a migration runner.
	 *
	 * @param AbstractMigrationRunner $migration_runner Migration runner.
	 *
	 * @return void
	 */
	public function registerMigrationRunner(AbstractMigrationRunner $migration_runner)
	{
		$this->_migrationRunners[$migration_runner->getFileExtension()] = $migration_runner;
	}

	/**
	 * Creates new migration.
	 *
	 * @param string $name           Migration name.
	 * @param string $file_extension Migration file extension.
	 *
	 * @return string
	 * @throws \InvalidArgumentException When migration name/file extension is invalid.
	 * @throws \LogicException When new migration already exists.
	 */
	public function createMigration($name, $file_extension)
	{
		if ( preg_replace('/[a-z\d\._]/', '', $name) ) {
			throw new \InvalidArgumentException(
				'The migration name can consist only from alpha-numeric characters, as well as dots and underscores.'
			);
		}

		if ( !in_array($file_extension, $this->getMigrationFileExtensions()) ) {
			throw new \InvalidArgumentException(
				'The migration runner for "' . $file_extension . '" file extension is not registered.'
			);
		}

		$migration_file = $this->_migrationsDirectory . '/' . date('Ymd_Hi') . '_' . $name . '.' . $file_extension;

		if ( file_exists($migration_file) ) {
			throw new \LogicException('The migration file "' . basename($migration_file) . '" already exists.');
		}

		file_put_contents($migration_file, $this->_migrationRunners[$file_extension]->getTemplate());

		return basename($migration_file);
	}

	/**
	 * Returns supported migration file extensions.
	 *
	 * @return array
	 * @throws \LogicException When no migration runners added.
	 */
	public function getMigrationFileExtensions()
	{
		if ( !$this->_migrationRunners ) {
			throw new \LogicException('No migrations runners registered.');
		}

		return array_keys($this->_migrationRunners);
	}

	/**
	 * Executes outstanding migrations.
	 *
	 * @param MigrationContext $context Context.
	 *
	 * @return void
	 */
	public function run(MigrationContext $context)
	{
		$this->setContext($context);
		$this->createMigrationsTable();

		$all_migrations = $this->getAllMigrations();
		$executed_migrations = $this->getExecutedMigrations();

		$migrations_to_execute = array_diff($all_migrations, $executed_migrations);
		$this->executeMigrations($migrations_to_execute);

		$migrations_to_delete = array_diff($executed_migrations, $all_migrations);
		$this->deleteMigrations($migrations_to_delete);
	}

	/**
	 * Sets current context.
	 *
	 * @param MigrationContext $context Context.
	 *
	 * @return void
	 */
	protected function setContext(MigrationContext $context)
	{
		$this->_context = $context;
		$this->_context->setContainer($this->_container);
	}

	/**
	 * Creates migration table, when missing.
	 *
	 * @return void
	 */
	protected function createMigrationsTable()
	{
		$db = $this->_context->getDatabase();

		$sql = "SELECT name
				FROM sqlite_master
				WHERE type = 'table' AND name = :table_name";
		$migrations_table = $db->fetchValue($sql, array('table_name' => 'Migrations'));

		if ( $migrations_table !== false ) {
			return;
		}

		$sql = 'CREATE TABLE "Migrations" (
					"Name" TEXT(255,0) NOT NULL,
					"ExecutedOn" INTEGER NOT NULL,
					PRIMARY KEY("Name")
				)';
		$db->perform($sql);
	}

	/**
	 * Returns all migrations.
	 *
	 * @return array
	 */
	protected function getAllMigrations()
	{
		$migrations = array();
		$file_extensions = $this->getMigrationFileExtensions();

		// Use "DirectoryIterator" instead of "glob", because it works within PHAR files as well.
		$directory_iterator = new \DirectoryIterator($this->_migrationsDirectory);

		foreach ( $directory_iterator as $file ) {
			if ( $file->isFile() && in_array($file->getExtension(), $file_extensions) ) {
				$migrations[] = $file->getBasename();
			}
		}

		sort($migrations);

		return $migrations;
	}

	/**
	 * Returns executed migrations.
	 *
	 * @return array
	 */
	protected function getExecutedMigrations()
	{
		$sql = 'SELECT Name
				FROM Migrations';

		return $this->_context->getDatabase()->fetchCol($sql);
	}

	/**
	 * Executes migrations.
	 *
	 * @param array $migrations Migrations.
	 *
	 * @return void
	 */
	protected function executeMigrations(array $migrations)
	{
		if ( !$migrations ) {
			return;
		}

		$db = $this->_context->getDatabase();

		foreach ( $migrations as $migration ) {
			$db->beginTransaction();
			$migration_type = pathinfo($migration, PATHINFO_EXTENSION);

			$this->_migrationRunners[$migration_type]->run(
				$this->_migrationsDirectory . '/' . $migration,
				$this->_context
			);

			$sql = 'INSERT INTO Migrations (Name, ExecutedOn)
					VALUES (:name, :executed_on)';
			$db->perform($sql, array('name' => $migration, 'executed_on' => time()));
			$db->commit();
		}
	}

	/**
	 * Deletes migrations.
	 *
	 * @param array $migrations Migrations.
	 *
	 * @return void
	 */
	protected function deleteMigrations(array $migrations)
	{
		if ( !$migrations ) {
			return;
		}

		$sql = 'DELETE FROM Migrations
				WHERE Name IN (:names)';
		$this->_context->getDatabase()->perform($sql, array('names' => $migrations));
	}

}


1		<?php
2		/**
3		* This file is part of the DB-Migration library.
4		* For the full copyright and license information, please view
5		* the LICENSE file that was distributed with this source code.
6		*
7		* @copyright Alexander Obuhovich <[email protected]>
8		* @link https://github.com/console-helpers/db-migration
9		*/
10
11		namespace ConsoleHelpers\DatabaseMigration;
12
13
14		use ConsoleHelpers\SVNBuddy\Database\StatementProfiler;
15
16		class MigrationManager
17		{
18
19		/**
20		* Migrations directory.
21		*
22		* @var string
23		*/
24		private $_migrationsDirectory;
25
26		/**
27		* Container.
28		*
29		* @var \ArrayAccess
30		*/
31		private $_container;
32
33		/**
34		* Migration manager context.
35		*
36		* @var MigrationContext
37		*/
38		private $_context;
39
40		/**
41		* Migration runners.
42		*
43		* @var AbstractMigrationRunner[]
44		*/
45		private $_migrationRunners = array();
46
47		/**
48		* Creates migration manager instance.
49		*
50		* @param string $migrations_directory Migrations directory.
51		* @param \ArrayAccess $container Container.
52		*
53		* @throws \InvalidArgumentException When migrations directory does not exist.
54		*/
55	161	public function __construct($migrations_directory, \ArrayAccess $container)
56		{
57	161	if ( !file_exists($migrations_directory) \|\| !is_dir($migrations_directory) ) {
58	8	throw new \InvalidArgumentException(
59	8	'The "' . $migrations_directory . '" does not exist or not a directory.'
60	8	);
61		}
62
63	153	$this->_migrationsDirectory = $migrations_directory;
64	153	$this->_container = $container;
65	153	}
66
67		/**
68		* Registers a migration runner.
69		*
70		* @param AbstractMigrationRunner $migration_runner Migration runner.
71		*
72		* @return void
73		*/
74	153	public function registerMigrationRunner(AbstractMigrationRunner $migration_runner)
75		{
76	153	$this->_migrationRunners[$migration_runner->getFileExtension()] = $migration_runner;
77	153	}
78
79		/**
80		* Creates new migration.
81		*
82		* @param string $name Migration name.
83		* @param string $file_extension Migration file extension.
84		*
85		* @return string
86		* @throws \InvalidArgumentException When migration name/file extension is invalid.
87		* @throws \LogicException When new migration already exists.
88		*/
89		public function createMigration($name, $file_extension)
90		{
91		if ( preg_replace('/[a-z\d\._]/', '', $name) ) {
92		throw new \InvalidArgumentException(
93		'The migration name can consist only from alpha-numeric characters, as well as dots and underscores.'
94		);
95		}
96
97		if ( !in_array($file_extension, $this->getMigrationFileExtensions()) ) {
98		throw new \InvalidArgumentException(
99		'The migration runner for "' . $file_extension . '" file extension is not registered.'
100		);
101		}
102
103		$migration_file = $this->_migrationsDirectory . '/' . date('Ymd_Hi') . '_' . $name . '.' . $file_extension;
104
105		if ( file_exists($migration_file) ) {
106		throw new \LogicException('The migration file "' . basename($migration_file) . '" already exists.');
107		}
108
109		file_put_contents($migration_file, $this->_migrationRunners[$file_extension]->getTemplate());
110
111		return basename($migration_file);
112		}
113
114		/**
115		* Returns supported migration file extensions.
116		*
117		* @return array
118		* @throws \LogicException When no migration runners added.
119		*/
120	151	public function getMigrationFileExtensions()
121		{
122	151	if ( !$this->_migrationRunners ) {
123		throw new \LogicException('No migrations runners registered.');
124		}
125
126	151	return array_keys($this->_migrationRunners);
127		}
128
129		/**
130		* Executes outstanding migrations.
131		*
132		* @param MigrationContext $context Context.
133		*
134		* @return void
135		*/
136	151	public function run(MigrationContext $context)
137		{
138	151	$this->setContext($context);
139	151	$this->createMigrationsTable();
140
141	151	$all_migrations = $this->getAllMigrations();
142	151	$executed_migrations = $this->getExecutedMigrations();
143
144	151	$migrations_to_execute = array_diff($all_migrations, $executed_migrations);
145	151	$this->executeMigrations($migrations_to_execute);
146
147	151	$migrations_to_delete = array_diff($executed_migrations, $all_migrations);
148	151	$this->deleteMigrations($migrations_to_delete);
149	151	}
150
151		/**
152		* Sets current context.
153		*
154		* @param MigrationContext $context Context.
155		*
156		* @return void
157		*/
158	151	protected function setContext(MigrationContext $context)
159		{
160	151	$this->_context = $context;
161	151	$this->_context->setContainer($this->_container);
162	151	}
163
164		/**
165		* Creates migration table, when missing.
166		*
167		* @return void
168		*/
169	151	protected function createMigrationsTable()
170		{
171	151	$db = $this->_context->getDatabase();
172
173		$sql = "SELECT name
174		FROM sqlite_master
175	151	WHERE type = 'table' AND name = :table_name";
176	151	$migrations_table = $db->fetchValue($sql, array('table_name' => 'Migrations'));
177
178	151	if ( $migrations_table !== false ) {
179	2	return;
180		}
181
182		$sql = 'CREATE TABLE "Migrations" (
183		"Name" TEXT(255,0) NOT NULL,
184		"ExecutedOn" INTEGER NOT NULL,
185		PRIMARY KEY("Name")
186	151	)';
187	151	$db->perform($sql);
188	151	}
189
190		/**
191		* Returns all migrations.
192		*
193		* @return array
194		*/
195	151	protected function getAllMigrations()
196		{
197	151	$migrations = array();
198	151	$file_extensions = $this->getMigrationFileExtensions();
199
200		// Use "DirectoryIterator" instead of "glob", because it works within PHAR files as well.
201	151	$directory_iterator = new \DirectoryIterator($this->_migrationsDirectory);
202
203	151	foreach ( $directory_iterator as $file ) {
204	151	if ( $file->isFile() && in_array($file->getExtension(), $file_extensions) ) {
205	151	$migrations[] = $file->getBasename();
206	151	}
207	151	}
208
209	151	sort($migrations);
210
211	151	return $migrations;
212		}
213
214		/**
215		* Returns executed migrations.
216		*
217		* @return array
218		*/
219	151	protected function getExecutedMigrations()
220		{
221		$sql = 'SELECT Name
222	151	FROM Migrations';
223
224	151	return $this->_context->getDatabase()->fetchCol($sql);
225		}
226
227		/**
228		* Executes migrations.
229		*
230		* @param array $migrations Migrations.
231		*
232		* @return void
233		*/
234	151	protected function executeMigrations(array $migrations)
235		{
236	151	if ( !$migrations ) {
237	2	return;
238		}
239
240	151	$db = $this->_context->getDatabase();
241
242	151	foreach ( $migrations as $migration ) {
243	151	$db->beginTransaction();
244	151	$migration_type = pathinfo($migration, PATHINFO_EXTENSION);
245
246	151	$this->_migrationRunners[$migration_type]->run(
247	151	$this->_migrationsDirectory . '/' . $migration,
248	151	$this->_context
249	151	);
250
251		$sql = 'INSERT INTO Migrations (Name, ExecutedOn)
252	151	VALUES (:name, :executed_on)';
253	151	$db->perform($sql, array('name' => $migration, 'executed_on' => time()));
254	151	$db->commit();
255	151	}
256	151	}
257
258		/**
259		* Deletes migrations.
260		*
261		* @param array $migrations Migrations.
262		*
263		* @return void
264		*/
265	151	protected function deleteMigrations(array $migrations)
266		{
267	151	if ( !$migrations ) {
268	151	return;
269		}
270
271		$sql = 'DELETE FROM Migrations
272	1	WHERE Name IN (:names)';
273	1	$this->_context->getDatabase()->perform($sql, array('names' => $migrations));
274	1	}
275
276		}
277

console-helpers / svn-buddy

Push — master ( 3d89d6...b1b27b )

MigrationManager::run() A

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