MigrationManager::__construct() - Code Metrics - Inspection of "Remove unused imports, that PhpStorm wasn't report..." - console-helpers/svn-buddy - Measure and Improve Code Quality continuously with Scrutinizer

Failed Conditions

Push — master ( 34c0d8...598f4b )

by Alexander

created 2016-05-10 19:51 UTC

MigrationManager::__construct() A

↳ Parent: MigrationManager

Complexity

Conditions	3
Paths	2

Size

Total Lines	11
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	8
CRAP Score	3

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	11
ccs	8
cts	8
cp	1
rs	9.4285
cc	3
eloc	6
nc	2
nop	2
crap	3

<?php
/**
 * This file is part of the SVN-Buddy 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/svn-buddy
 */

namespace ConsoleHelpers\SVNBuddy\Database\Migration;


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()
	{
		$file_extensions = implode(',', $this->getMigrationFileExtensions());
		$migrations = glob($this->_migrationsDirectory . '/*.{' . $file_extensions . '}', GLOB_BRACE | GLOB_NOSORT);
		$migrations = array_map('basename', $migrations);
		sort($migrations); // This sorting is better, then one offered by "glob" function.

		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();
		$profiler = $db->getProfiler();

		// Allow duplicate statements during migration execution.
		if ( $profiler instanceof StatementProfiler ) {
			$profiler->trackDuplicates(false);
		}

		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();
		}

		// Doesn't allow duplicate statements after migration execution.
		if ( $profiler instanceof StatementProfiler ) {
			$profiler->trackDuplicates(true);
		}

		if ( is_object($profiler) ) {
			$profiler->resetProfiles();
		}
	}

	/**
	 * 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 SVN-Buddy 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/svn-buddy
9		*/
10
11		namespace ConsoleHelpers\SVNBuddy\Database\Migration;
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 $container Container.
52		*
53		* @throws \InvalidArgumentException When migrations directory does not exist.
54		*/
55	19	public function __construct($migrations_directory, \ArrayAccess $container)
56		{
57	19	if ( !file_exists($migrations_directory) \|\| !is_dir($migrations_directory) ) {
58	2	throw new \InvalidArgumentException(
59	2	'The "' . $migrations_directory . '" does not exist or not a directory.'
60	2	);
61		}
62
63	17	$this->_migrationsDirectory = $migrations_directory;
64	17	$this->_container = $container;
65	17	}
66
67		/**
68		* Registers a migration runner.
69		*
70		* @param AbstractMigrationRunner $migration_runner Migration runner.
71		*
72		* @return void
73		*/
74	16	public function registerMigrationRunner(AbstractMigrationRunner $migration_runner)
75		{
76	16	$this->_migrationRunners[$migration_runner->getFileExtension()] = $migration_runner;
77	16	}
78
79		/**
80		* Creates new migration.
81		*
82		* @param string $name Migration name.
83		* @param string $file_extension Migration file extension.
84		*
85		* @return string
86		* @throws \InvalidArgumentException When migration name/file extension is invalid.
87		* @throws \LogicException When new migration already exists.
88		*/
89	6	public function createMigration($name, $file_extension)
90		{
91	6	if ( preg_replace('/[a-z\d\._]/', '', $name) ) {
92	3	throw new \InvalidArgumentException(
93		'The migration name can consist only from alpha-numeric characters, as well as dots and underscores.'
94	3	);
95		}
96
97	3	if ( !in_array($file_extension, $this->getMigrationFileExtensions()) ) {
98	1	throw new \InvalidArgumentException(
99	1	'The migration runner for "' . $file_extension . '" file extension is not registered.'
100	1	);
101		}
102
103	2	$migration_file = $this->_migrationsDirectory . '/' . date('Ymd_Hi') . '_' . $name . '.' . $file_extension;
104
105	2	if ( file_exists($migration_file) ) {
106	1	throw new \LogicException('The migration file "' . basename($migration_file) . '" already exists.');
107		}
108
109	2	file_put_contents($migration_file, $this->_migrationRunners[$file_extension]->getTemplate());
110
111	2	return basename($migration_file);
112		}
113
114		/**
115		* Returns supported migration file extensions.
116		*
117		* @return array
118		* @throws \LogicException When no migration runners added.
119		*/
120	13	public function getMigrationFileExtensions()
121		{
122	13	if ( !$this->_migrationRunners ) {
123	1	throw new \LogicException('No migrations runners registered.');
124		}
125
126	12	return array_keys($this->_migrationRunners);
127		}
128
129		/**
130		* Executes outstanding migrations.
131		*
132		* @param MigrationContext $context Context.
133		*
134		* @return void
135		*/
136	8	public function run(MigrationContext $context)
137		{
138	8	$this->setContext($context);
139	8	$this->createMigrationsTable();
140
141	8	$all_migrations = $this->getAllMigrations();
142	8	$executed_migrations = $this->getExecutedMigrations();
143
144	8	$migrations_to_execute = array_diff($all_migrations, $executed_migrations);
145	8	$this->executeMigrations($migrations_to_execute);
146
147	8	$migrations_to_delete = array_diff($executed_migrations, $all_migrations);
148	8	$this->deleteMigrations($migrations_to_delete);
149	8	}
150
151		/**
152		* Sets current context.
153		*
154		* @param MigrationContext $context Context.
155		*
156		* @return void
157		*/
158	8	protected function setContext(MigrationContext $context)
159		{
160	8	$this->_context = $context;
161	8	$this->_context->setContainer($this->_container);
162	8	}
163
164		/**
165		* Creates migration table, when missing.
166		*
167		* @return void
168		*/
169	8	protected function createMigrationsTable()
170		{
171	8	$db = $this->_context->getDatabase();
172
173		$sql = "SELECT name
174		FROM sqlite_master
175	8	WHERE type = 'table' AND name = :table_name";
176	8	$migrations_table = $db->fetchValue($sql, array('table_name' => 'Migrations'));
177
178	8	if ( $migrations_table !== false ) {
179	3	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	8	)';
187	8	$db->perform($sql);
188	8	}
189
190		/**
191		* Returns all migrations.
192		*
193		* @return array
194		*/
195	8	protected function getAllMigrations()
196		{
197	8	$file_extensions = implode(',', $this->getMigrationFileExtensions());
198	8	$migrations = glob($this->_migrationsDirectory . '/*.{' . $file_extensions . '}', GLOB_BRACE \| GLOB_NOSORT);
199	8	$migrations = array_map('basename', $migrations);
200	8	sort($migrations); // This sorting is better, then one offered by "glob" function.
201
202	8	return $migrations;
203		}
204
205		/**
206		* Returns executed migrations.
207		*
208		* @return array
209		*/
210	8	protected function getExecutedMigrations()
211		{
212		$sql = 'SELECT Name
213	8	FROM Migrations';
214
215	8	return $this->_context->getDatabase()->fetchCol($sql);
216		}
217
218		/**
219		* Executes migrations.
220		*
221		* @param array $migrations Migrations.
222		*
223		* @return void
224		*/
225	8	protected function executeMigrations(array $migrations)
226		{
227	8	if ( !$migrations ) {
228	4	return;
229		}
230
231	6	$db = $this->_context->getDatabase();
232	6	$profiler = $db->getProfiler();
233
234		// Allow duplicate statements during migration execution.
235	6	if ( $profiler instanceof StatementProfiler ) {
236	1	$profiler->trackDuplicates(false);
237	1	}
238
239	6	foreach ( $migrations as $migration ) {
240	6	$db->beginTransaction();
241	6	$migration_type = pathinfo($migration, PATHINFO_EXTENSION);
242
243	6	$this->_migrationRunners[$migration_type]->run(
244	6	$this->_migrationsDirectory . '/' . $migration,
245	6	$this->_context
246	6	);
247
248		$sql = 'INSERT INTO Migrations (Name, ExecutedOn)
249	6	VALUES (:name, :executed_on)';
250	6	$db->perform($sql, array('name' => $migration, 'executed_on' => time()));
251	6	$db->commit();
252	6	}
253
254		// Doesn't allow duplicate statements after migration execution.
255	6	if ( $profiler instanceof StatementProfiler ) {
256	1	$profiler->trackDuplicates(true);
257	1	}
258
259	6	if ( is_object($profiler) ) {
260	2	$profiler->resetProfiles();
261	2	}
262	6	}
263
264		/**
265		* Deletes migrations.
266		*
267		* @param array $migrations Migrations.
268		*
269		* @return void
270		*/
271	8	protected function deleteMigrations(array $migrations)
272		{
273	8	if ( !$migrations ) {
274	8	return;
275		}
276
277		$sql = 'DELETE FROM Migrations
278	1	WHERE Name IN (:names)';
279	1	$this->_context->getDatabase()->perform($sql, array('names' => $migrations));
280	1	}
281
282		}
283

console-helpers / svn-buddy

Push — master ( 34c0d8...598f4b )

MigrationManager::__construct() A

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