| 1 | <?php |
| 2 | namespace Civi\API; |
| 3 | |
| 4 | use Symfony\Component\Process\PhpExecutableFinder; |
| 5 | use Symfony\Component\Process\Process; |
| 6 | |
| 7 | /** |
| 8 | * Class ExternalBatch |
| 9 | * @package Civi\API |
| 10 | * |
| 11 | * Perform a series of external, asynchronous, concurrent API call. |
| 12 | */ |
| 13 | class ExternalBatch { |
| 14 | /** |
| 15 | * The time to wait when polling for process status (microseconds). |
| 16 | */ |
| 17 | const POLL_INTERVAL = 10000; |
| 18 | |
| 19 | /** |
| 20 | * @var array |
| 21 | * Array(int $idx => array $apiCall). |
| 22 | */ |
| 23 | protected $apiCalls; |
| 24 | |
| 25 | protected $defaultParams; |
| 26 | |
| 27 | protected $root; |
| 28 | |
| 29 | protected $settingsPath; |
| 30 | |
| 31 | protected $env; |
| 32 | |
| 33 | /** |
| 34 | * @var array |
| 35 | * Array(int $idx => Process $process). |
| 36 | */ |
| 37 | protected $processes; |
| 38 | |
| 39 | /** |
| 40 | * @var array |
| 41 | * Array(int $idx => array $apiResult). |
| 42 | */ |
| 43 | protected $apiResults; |
| 44 | |
| 45 | /** |
| 46 | * @param array $defaultParams |
| 47 | * Default values to merge into any API calls. |
| 48 | */ |
| 49 | public function __construct($defaultParams = array()) { |
| 50 | global $civicrm_root; |
| 51 | $this->root = $civicrm_root; |
| 52 | $this->settingsPath = defined('CIVICRM_SETTINGS_PATH') ? CIVICRM_SETTINGS_PATH : NULL; |
| 53 | $this->defaultParams = $defaultParams; |
| 54 | $this->env = $_ENV; |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * @param string $entity |
| 59 | * @param string $action |
| 60 | * @param array $params |
| 61 | * @return $this |
| 62 | */ |
| 63 | public function addCall($entity, $action, $params = array()) { |
| 64 | $params = array_merge($this->defaultParams, $params); |
| 65 | |
| 66 | $this->apiCalls[] = array( |
| 67 | 'entity' => $entity, |
| 68 | 'action' => $action, |
| 69 | 'params' => $params, |
| 70 | ); |
| 71 | return $this; |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * @param array $env |
| 76 | * List of environment variables to add. |
| 77 | * @return static |
| 78 | */ |
| 79 | public function addEnv($env) { |
| 80 | $this->env = array_merge($this->env, $env); |
| 81 | return $this; |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * Run all the API calls concurrently. |
| 86 | * |
| 87 | * @return static |
| 88 | * @throws \CRM_Core_Exception |
| 89 | */ |
| 90 | public function start() { |
| 91 | foreach ($this->apiCalls as $idx => $apiCall) { |
| 92 | $process = $this->createProcess($apiCall); |
| 93 | $process->start(); |
| 94 | $this->processes[$idx] = $process; |
| 95 | } |
| 96 | return $this; |
| 97 | } |
| 98 | |
| 99 | /** |
| 100 | * @return int |
| 101 | * The number of running processes. |
| 102 | */ |
| 103 | public function getRunningCount() { |
| 104 | $count = 0; |
| 105 | foreach ($this->processes as $process) { |
| 106 | if ($process->isRunning()) { |
| 107 | $count++; |
| 108 | } |
| 109 | } |
| 110 | return $count; |
| 111 | } |
| 112 | |
| 113 | public function wait() { |
| 114 | while (!empty($this->processes)) { |
| 115 | usleep(self::POLL_INTERVAL); |
| 116 | foreach (array_keys($this->processes) as $idx) { |
| 117 | /** @var Process $process */ |
| 118 | $process = $this->processes[$idx]; |
| 119 | if (!$process->isRunning()) { |
| 120 | $parsed = json_decode($process->getOutput(), TRUE); |
| 121 | if ($process->getExitCode() || $parsed === NULL) { |
| 122 | $this->apiResults[] = array( |
| 123 | 'is_error' => 1, |
| 124 | 'error_message' => 'External API returned malformed response.', |
| 125 | 'trace' => array( |
| 126 | 'code' => $process->getExitCode(), |
| 127 | 'stdout' => $process->getOutput(), |
| 128 | 'stderr' => $process->getErrorOutput(), |
| 129 | ), |
| 130 | ); |
| 131 | } |
| 132 | else { |
| 133 | $this->apiResults[] = $parsed; |
| 134 | } |
| 135 | unset($this->processes[$idx]); |
| 136 | } |
| 137 | } |
| 138 | } |
| 139 | return $this; |
| 140 | } |
| 141 | |
| 142 | /** |
| 143 | * @return array |
| 144 | */ |
| 145 | public function getResults() { |
| 146 | return $this->apiResults; |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * @param int $idx |
| 151 | * @return array |
| 152 | */ |
| 153 | public function getResult($idx = 0) { |
| 154 | return $this->apiResults[$idx]; |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * Determine if the local environment supports running API calls |
| 159 | * externally. |
| 160 | * |
| 161 | * @return bool |
| 162 | */ |
| 163 | public function isSupported() { |
| 164 | // If you try in Windows, feel free to change this... |
| 165 | if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN' || !function_exists('proc_open')) { |
| 166 | return FALSE; |
| 167 | } |
| 168 | if (!file_exists($this->root . '/bin/cli.php') || !file_exists($this->settingsPath)) { |
| 169 | return FALSE; |
| 170 | } |
| 171 | return TRUE; |
| 172 | } |
| 173 | |
| 174 | /** |
| 175 | * @param array $apiCall |
| 176 | * Array with keys: entity, action, params. |
| 177 | * @return Process |
| 178 | * @throws \CRM_Core_Exception |
| 179 | */ |
| 180 | public function createProcess($apiCall) { |
| 181 | $parts = array(); |
| 182 | |
| 183 | if (defined('CIVICRM_TEST') && CIVICRM_TEST) { |
| 184 | // When testing, civicrm.settings.php may rely on $_CV, which is only |
| 185 | // populated/propagated if we execute through `cv`. |
| 186 | $parts[] = 'cv api'; |
| 187 | $parts[] = escapeshellarg($apiCall['entity'] . '.' . $apiCall['action']); |
| 188 | $parts[] = "--out=json-strict"; |
| 189 | foreach ($apiCall['params'] as $key => $value) { |
| 190 | $parts[] = escapeshellarg("$key=$value"); |
| 191 | } |
| 192 | } |
| 193 | else { |
| 194 | // But in production, we may not have `cv` installed. |
| 195 | $executableFinder = new PhpExecutableFinder(); |
| 196 | $php = $executableFinder->find(); |
| 197 | if (!$php) { |
| 198 | throw new \CRM_Core_Exception("Failed to locate PHP interpreter."); |
| 199 | } |
| 200 | $parts[] = $php; |
| 201 | $parts[] = escapeshellarg($this->root . '/bin/cli.php'); |
| 202 | $parts[] = escapeshellarg("-e=" . $apiCall['entity']); |
| 203 | $parts[] = escapeshellarg("-a=" . $apiCall['action']); |
| 204 | $parts[] = "--json"; |
| 205 | $parts[] = escapeshellarg("-u=dummyuser"); |
| 206 | foreach ($apiCall['params'] as $key => $value) { |
| 207 | $parts[] = escapeshellarg("--$key=$value"); |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | $command = implode(" ", $parts); |
| 212 | $env = array_merge($this->env, array( |
| 213 | 'CIVICRM_SETTINGS' => $this->settingsPath, |
| 214 | )); |
| 215 | return new Process($command, $this->root, $env); |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * @return string |
| 220 | */ |
| 221 | public function getRoot() { |
| 222 | return $this->root; |
| 223 | } |
| 224 | |
| 225 | /** |
| 226 | * @param string $root |
| 227 | */ |
| 228 | public function setRoot($root) { |
| 229 | $this->root = $root; |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * @return string |
| 234 | */ |
| 235 | public function getSettingsPath() { |
| 236 | return $this->settingsPath; |
| 237 | } |
| 238 | |
| 239 | /** |
| 240 | * @param string $settingsPath |
| 241 | */ |
| 242 | public function setSettingsPath($settingsPath) { |
| 243 | $this->settingsPath = $settingsPath; |
| 244 | } |
| 245 | |
| 246 | } |