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<?php |
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declare(strict_types = 1); |
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namespace DL\ConsulPhpEnvVar\Service; |
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use SensioLabs\Consul\Services\KV; |
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use Symfony\Component\DependencyInjection\ContainerBuilder; |
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/** |
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* Manages environment variables through Consul. |
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* |
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* @package DL\ConsulPhpEnvVar\Service |
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* @author Petre Pătrașc <[email protected]> |
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*/ |
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class ConsulEnvManager |
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{ |
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/** |
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* @var KV |
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*/ |
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protected $kv; |
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/** |
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* @var bool |
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*/ |
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protected $overwriteEvenIfDefined = false; |
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/** |
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* ConsulEnvManager constructor. |
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* |
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* @param KV $kv |
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* @param bool $overwriteEvenIfDefined |
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*/ |
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public function __construct(KV $kv, bool $overwriteEvenIfDefined = false) |
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{ |
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$this->kv = $kv; |
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$this->overwriteEvenIfDefined = $overwriteEvenIfDefined; |
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} |
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/** |
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* Add missing environment variables from Consul. |
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* |
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* @param array $mappings |
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*/ |
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public function getEnvVarsFromConsul(array $mappings) |
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{ |
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foreach ($mappings as $environmentKey => $consulPath) { |
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$keyExists = $this->keyIsDefined($environmentKey); |
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if ($keyExists && !$this->overwriteEvenIfDefined) { |
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continue; |
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} |
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$consulValue = $this->getKeyValueFromConsul($consulPath); |
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$this->saveKeyValueInEnvironmentVars($environmentKey, $consulValue); |
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} |
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} |
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/** |
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* Expose a set of mappings into the container builder. |
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* |
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* @param ContainerBuilder $container |
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* @param array $mappings |
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* |
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* @return ContainerBuilder |
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*/ |
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public function exposeEnvironmentIntoContainer(ContainerBuilder $container, array $mappings): ContainerBuilder |
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{ |
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foreach ($mappings as $environmentKey => $consulPath) { |
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$container->setParameter("env({$environmentKey})", getenv($environmentKey)); |
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} |
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return $container; |
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} |
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/** |
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* Check if an environment key is defined. |
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* |
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* @param string $environmentKey |
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* |
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* @return bool |
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*/ |
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private function keyIsDefined(string $environmentKey): bool |
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{ |
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$keyValue = getenv($environmentKey); |
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if (false === $keyValue) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Get a key value from Consul. |
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* |
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* @param string $kvPath |
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* |
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* @return string |
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*/ |
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private function getKeyValueFromConsul(string $kvPath): string |
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{ |
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return $this->kv->get($kvPath, ['raw' => true])->getBody(); |
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} |
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/** |
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* Save the value of a key in an environment variable. |
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* |
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* @param string $envKey |
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* @param string $kvValue |
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*/ |
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private function saveKeyValueInEnvironmentVars($envKey, $kvValue) |
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{ |
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putenv("{$envKey}={$kvValue}"); |
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} |
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} |
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dlapps /
consul-php-envvar
