public static function defaultProvider()

in src/Credentials/CredentialProvider.php [77:141]
60 lines of code
8 McCabe index (conditional complexity)

    public static function defaultProvider(array $config = [])
    {
        $cacheable = [
            'web_identity',
            'sso',
            'process_credentials',
            'process_config',
            'ecs',
            'instance'
        ];

        $profileName = getenv(self::ENV_PROFILE) ?: 'default';

        $defaultChain = [
            'env' => self::env(),
            'web_identity' => self::assumeRoleWithWebIdentityCredentialProvider($config),
        ];
        if (
            !isset($config['use_aws_shared_config_files'])
            || $config['use_aws_shared_config_files'] !== false
        ) {
            $defaultChain['sso'] = self::sso(
                $profileName,
                self::getHomeDir() . '/.aws/config',
                $config
            );
            $defaultChain['process_credentials'] = self::process();
            $defaultChain['ini'] = self::ini();
            $defaultChain['process_config'] = self::process(
                'profile ' . $profileName,
                self::getHomeDir() . '/.aws/config'
            );
            $defaultChain['ini_config'] = self::ini(
                'profile '. $profileName,
                self::getHomeDir() . '/.aws/config'
            );
        }

        if (self::shouldUseEcs()) {
            $defaultChain['ecs'] = self::ecsCredentials($config);
        } else {
            $defaultChain['instance'] = self::instanceProfile($config);
        }

        if (isset($config['credentials'])
            && $config['credentials'] instanceof CacheInterface
        ) {
            foreach ($cacheable as $provider) {
                if (isset($defaultChain[$provider])) {
                    $defaultChain[$provider] = self::cache(
                        $defaultChain[$provider],
                        $config['credentials'],
                        'aws_cached_' . $provider . '_credentials'
                    );
                }
            }
        }

        return self::memoize(
            call_user_func_array(
                [CredentialProvider::class, 'chain'],
                array_values($defaultChain)
            )
        );
    }