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Differences Between: [Versions 400 and 401]

   1  <?php
   2  /*
   3   * Copyright 2020-present MongoDB, Inc.
   4   *
   5   * Licensed under the Apache License, Version 2.0 (the "License");
   6   * you may not use this file except in compliance with the License.
   7   * You may obtain a copy of the License at
   8   *
   9   *   http://www.apache.org/licenses/LICENSE-2.0
  10   *
  11   * Unless required by applicable law or agreed to in writing, software
  12   * distributed under the License is distributed on an "AS IS" BASIS,
  13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14   * See the License for the specific language governing permissions and
  15   * limitations under the License.
  16   */
  17  
  18  namespace MongoDB\Command;
  19  
  20  use MongoDB\Driver\Command;
  21  use MongoDB\Driver\Exception\RuntimeException as DriverRuntimeException;
  22  use MongoDB\Driver\Server;
  23  use MongoDB\Driver\Session;
  24  use MongoDB\Exception\InvalidArgumentException;
  25  use MongoDB\Exception\UnexpectedValueException;
  26  use MongoDB\Operation\Executable;
  27  use function current;
  28  use function is_array;
  29  use function is_bool;
  30  use function is_integer;
  31  use function is_object;
  32  
  33  /**
  34   * Wrapper for the ListDatabases command.
  35   *
  36   * @internal
  37   * @see http://docs.mongodb.org/manual/reference/command/listDatabases/
  38   */
  39  class ListDatabases implements Executable
  40  {
  41      /** @var array */
  42      private $options;
  43  
  44      /**
  45       * Constructs a listDatabases command.
  46       *
  47       * Supported options:
  48       *
  49       *  * authorizedDatabases (boolean): Determines which databases are returned
  50       *    based on the user privileges.
  51       *
  52       *    For servers < 4.0.5, this option is ignored.
  53       *
  54       *  * filter (document): Query by which to filter databases.
  55       *
  56       *    For servers < 3.6, this option is ignored.
  57       *
  58       *  * maxTimeMS (integer): The maximum amount of time to allow the query to
  59       *    run.
  60       *
  61       *  * nameOnly (boolean): A flag to indicate whether the command should
  62       *    return just the database names, or return both database names and size
  63       *    information.
  64       *
  65       *  * session (MongoDB\Driver\Session): Client session.
  66       *
  67       *    Sessions are not supported for server versions < 3.6.
  68       *
  69       * @param array $options Command options
  70       * @throws InvalidArgumentException for parameter/option parsing errors
  71       */
  72      public function __construct(array $options = [])
  73      {
  74          if (isset($options['authorizedDatabases']) && ! is_bool($options['authorizedDatabases'])) {
  75              throw InvalidArgumentException::invalidType('"authorizedDatabases" option', $options['authorizedDatabases'], 'boolean');
  76          }
  77  
  78          if (isset($options['filter']) && ! is_array($options['filter']) && ! is_object($options['filter'])) {
  79              throw InvalidArgumentException::invalidType('"filter" option', $options['filter'], ['array', 'object']);
  80          }
  81  
  82          if (isset($options['maxTimeMS']) && ! is_integer($options['maxTimeMS'])) {
  83              throw InvalidArgumentException::invalidType('"maxTimeMS" option', $options['maxTimeMS'], 'integer');
  84          }
  85  
  86          if (isset($options['nameOnly']) && ! is_bool($options['nameOnly'])) {
  87              throw InvalidArgumentException::invalidType('"nameOnly" option', $options['nameOnly'], 'boolean');
  88          }
  89  
  90          if (isset($options['session']) && ! $options['session'] instanceof Session) {
  91              throw InvalidArgumentException::invalidType('"session" option', $options['session'], Session::class);
  92          }
  93  
  94          $this->options = $options;
  95      }
  96  
  97      /**
  98       * Execute the operation.
  99       *
 100       * @see Executable::execute()
 101       * @param Server $server
 102       * @return array An array of database info structures
 103       * @throws UnexpectedValueException if the command response was malformed
 104       * @throws DriverRuntimeException for other driver errors (e.g. connection errors)
 105       */
 106      public function execute(Server $server)
 107      {
 108          $cmd = ['listDatabases' => 1];
 109  
 110          if (isset($this->options['authorizedDatabases'])) {
 111              $cmd['authorizedDatabases'] = $this->options['authorizedDatabases'];
 112          }
 113  
 114          if (! empty($this->options['filter'])) {
 115              $cmd['filter'] = (object) $this->options['filter'];
 116          }
 117  
 118          if (isset($this->options['maxTimeMS'])) {
 119              $cmd['maxTimeMS'] = $this->options['maxTimeMS'];
 120          }
 121  
 122          if (isset($this->options['nameOnly'])) {
 123              $cmd['nameOnly'] = $this->options['nameOnly'];
 124          }
 125  
 126          $cursor = $server->executeReadCommand('admin', new Command($cmd), $this->createOptions());
 127          $cursor->setTypeMap(['root' => 'array', 'document' => 'array']);
 128          $result = current($cursor->toArray());
 129  
 130          if (! isset($result['databases']) || ! is_array($result['databases'])) {
 131              throw new UnexpectedValueException('listDatabases command did not return a "databases" array');
 132          }
 133  
 134          return $result['databases'];
 135      }
 136  
 137      /**
 138       * Create options for executing the command.
 139       *
 140       * Note: read preference is intentionally omitted, as the spec requires that
 141       * the command be executed on the primary.
 142       *
 143       * @see http://php.net/manual/en/mongodb-driver-server.executecommand.php
 144       * @return array
 145       */
 146      private function createOptions()
 147      {
 148          $options = [];
 149  
 150          if (isset($this->options['session'])) {
 151              $options['session'] = $this->options['session'];
 152          }
 153  
 154          return $options;
 155      }
 156  }