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<?php |
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namespace TheAentMachine\Aenthill; |
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use TheAentMachine\Exception\LogLevelException; |
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use TheAentMachine\Exception\MissingEnvironmentVariableException; |
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/** |
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* Utility class to access the aent configuration settings (stored in environment variables) |
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*/ |
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class Pheromone |
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{ |
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private static $levels = [ |
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'DEBUG' => true, |
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'INFO' => true, |
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'WARN' => true, |
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'ERROR' => true, |
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]; |
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/** |
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* Returns the log level for this aent. |
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* |
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* @return string |
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* @throws LogLevelException |
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*/ |
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public static function getLogLevel(): string |
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{ |
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$logLevel = getenv('PHEROMONE_LOG_LEVEL'); |
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if ($logLevel === false) { |
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throw LogLevelException::emptyLogLevel(); |
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} |
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if (!array_key_exists($logLevel, self::$levels)) { |
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throw LogLevelException::invalidLogLevel($logLevel); |
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} |
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return $logLevel; |
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} |
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/** |
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* Tries to returns the value of an environment variable or throws an exception. |
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* |
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* @param string $variableName the environment variable key |
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* @return string |
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* @throws MissingEnvironmentVariableException |
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*/ |
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private static function mustGet(string $variableName): string |
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{ |
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$value = getenv($variableName); |
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if ($value === false) { |
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throw MissingEnvironmentVariableException::missingEnv($variableName); |
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} |
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return $value; |
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} |
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/** |
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* Tries to returns the value of an environment variable or null. |
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* |
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* @param string $variableName the environment variable key |
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* @return null|string |
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*/ |
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private static function get(string $variableName): ?string |
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{ |
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$value = getenv($variableName); |
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return $value === false ? null : $value; |
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} |
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/** |
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* The project directory path on the host machine. |
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* |
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* @return string |
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* @throws MissingEnvironmentVariableException |
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*/ |
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public static function getHostProjectDirectory(): string |
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{ |
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return self::mustGet('PHEROMONE_HOST_PROJECT_DIR'); |
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} |
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/** |
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* The project directory path in the container. |
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* |
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* @return string |
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* @throws MissingEnvironmentVariableException |
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*/ |
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public static function getContainerProjectDirectory(): string |
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{ |
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return rtrim(self::mustGet('PHEROMONE_CONTAINER_PROJECT_DIR'), '/'); |
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} |
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/** |
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* The current image of this aent. |
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* |
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* @return string |
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* @throws MissingEnvironmentVariableException |
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*/ |
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public static function getImage(): string |
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{ |
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return self::mustGet('PHEROMONE_IMAGE_NAME'); |
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} |
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/** |
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* The ID from the manifest if this aent has been registred. |
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* |
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* @return string |
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* @throws MissingEnvironmentVariableException |
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*/ |
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public static function getID(): string |
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{ |
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return self::mustGet('PHEROMONE_ID'); |
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} |
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/** |
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* The container ID which has started this aent or null. |
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* |
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* @return null|string |
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*/ |
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public static function getOriginContainer(): ?string |
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{ |
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return self::get('PHEROMONE_FROM_CONTAINER_ID'); |
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} |
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} |
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theaentmachine /
aent-console
