TheAentMachine\Pheromone

Complexity

Total Complexity

14

Size/Duplication

Total Lines	82
Duplicated Lines	0 %

Importance

Changes

0

8 Methods

Rating	Name	Duplication	Size	Complexity
A	getOrFail()	0	7	2
A	getContainerProjectDirectory()	0	3	1
A	getWhoAmI()	0	3	1
A	getLogLevel()	0	13	3
A	getOriginContainer()	0	4	2
A	getAenthillManifestContent()	0	8	2
A	getHostProjectDirectory()	0	3	1
A	getOriginImage()	0	4	2

<?php

namespace TheAentMachine;

use TheAentMachine\Exception\LogLevelException;
use TheAentMachine\Exception\MissingEnvironmentVariableException;

/**
 * Utility class to access the Aent configuration settings (stored in environment variables)
 */
class Pheromone
{
    private static $levels = [
        'DEBUG' => true,
        'INFO' => true,
        'WARN' => true,
        'ERROR' => true,
    ];

    /**
     * Returns the log level for this Aent.
     *
     * @return string
     */
    public static function getLogLevel(): string
    {
        $logLevel = getenv('PHEROMONE_LOG_LEVEL');

        if ($logLevel === false) {
            throw LogLevelException::emptyLogLevel();
        }

        if (!array_key_exists($logLevel, self::$levels)) {
            throw LogLevelException::invalidLogLevel($logLevel);
        }

        return $logLevel;
    }

    private static function getOrFail(string $variableName): string
    {
        $value = \getenv($variableName);
        if ($value === false) {
            throw MissingEnvironmentVariableException::missingEnv($variableName);
        }
        return $value;
    }

    public static function getWhoAmI(): string
    {
        return self::getOrFail('PHEROMONE_WHOAMI');
    }

    /**
     * The project directory path on the host machine
     */
    public static function getHostProjectDirectory(): string
    {
        return self::getOrFail('PHEROMONE_HOST_PROJECT_DIR');
    }

    /**
     * The project directory path in the container
     */
    public static function getContainerProjectDirectory(): string
    {
        return rtrim(self::getOrFail('PHEROMONE_CONTAINER_PROJECT_DIR'), '/');
    }

    public static function getOriginContainer(): ?string
    {
        $from = getenv('PHEROMONE_FROM_CONTAINER_ID');
        return $from === false ? null : $from;
    }

    public static function getOriginImage(): ?string
    {
        $from = getenv('PHEROMONE_FROM_IMAGE_NAME');
        return $from === false ? null : $from;
    }

    /**
     * @return mixed[]
     */
    public static function getAenthillManifestContent(): array
    {
        $containerProjectDir = self::getContainerProjectDirectory();
        $aenthillJSONstr = file_get_contents($containerProjectDir . '/aenthill.json');
        if ($aenthillJSONstr === false) {
            throw new \RuntimeException('Failed to load the aenthill manifest file ' . $containerProjectDir . '/aenthill.json');
        }
        return \GuzzleHttp\json_decode($aenthillJSONstr, true);
    }
}