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Edit File : Partition.php \| Size : 7.97 KB
<?php namespace Aws\Endpoint; use ArrayAccess; use Aws\HasDataTrait; use Aws\Sts\RegionalEndpoints\ConfigurationProvider; use Aws\S3\RegionalEndpoint\ConfigurationProvider as S3ConfigurationProvider; use InvalidArgumentException as Iae; /** * Default implementation of an AWS partition. / final class Partition implements ArrayAccess, PartitionInterface { use HasDataTrait; private $stsLegacyGlobalRegions = [ 'ap-northeast-1', 'ap-south-1', 'ap-southeast-1', 'ap-southeast-2', 'aws-global', 'ca-central-1', 'eu-central-1', 'eu-north-1', 'eu-west-1', 'eu-west-2', 'eu-west-3', 'sa-east-1', 'us-east-1', 'us-east-2', 'us-west-1', 'us-west-2', ]; /* * The partition constructor accepts the following options: * * - `partition`: (string, required) The partition name as specified in an * ARN (e.g., `aws`) * - `partitionName`: (string) The human readable name of the partition * (e.g., "AWS Standard") * - `dnsSuffix`: (string, required) The DNS suffix of the partition. This * value is used to determine how endpoints in the partition are resolved. * - `regionRegex`: (string) A PCRE regular expression that specifies the * pattern that region names in the endpoint adhere to. * - `regions`: (array, required) A map of the regions in the partition. * Each key is the region as present in a hostname (e.g., `us-east-1`), * and each value is a structure containing region information. * - `defaults`: (array) A map of default key value pairs to apply to each * endpoint of the partition. Any value in an `endpoint` definition will * supersede any values specified in `defaults`. * - `services`: (array, required) A map of service endpoint prefix name * (the value found in a hostname) to information about the service. * * @param array $definition * * @throws Iae if any required options are missing / public function __construct(array $definition) { foreach (['partition', 'regions', 'services', 'dnsSuffix'] as $key) { if (!isset($definition[$key])) { throw new Iae("Partition missing required $key field"); } } $this->data = $definition; } public function getName() { return $this->data['partition']; } /* * @internal * @return mixed / public function getDnsSuffix() { return $this->data['dnsSuffix']; } public function isRegionMatch($region, $service) { if (isset($this->data['regions'][$region]) \|\| isset($this->data['services'][$service]['endpoints'][$region]) ) { return true; } if (isset($this->data['regionRegex'])) { return (bool) preg_match( "@{$this->data['regionRegex']}@", $region ); } return false; } public function getAvailableEndpoints( $service, $allowNonRegionalEndpoints = false ) { if ($this->isServicePartitionGlobal($service)) { return [$this->getPartitionEndpoint($service)]; } if (isset($this->data['services'][$service]['endpoints'])) { $serviceRegions = array_keys( $this->data['services'][$service]['endpoints'] ); return $allowNonRegionalEndpoints ? $serviceRegions : array_intersect($serviceRegions, array_keys( $this->data['regions'] )); } return []; } public function __invoke(array $args = []) { $service = isset($args['service']) ? $args['service'] : ''; $region = isset($args['region']) ? $args['region'] : ''; $scheme = isset($args['scheme']) ? $args['scheme'] : 'https'; $options = isset($args['options']) ? $args['options'] : []; $data = $this->getEndpointData($service, $region, $options); return [ 'endpoint' => "{$scheme}://" . $this->formatEndpoint( isset($data['hostname']) ? $data['hostname'] : '', $service, $region ), 'signatureVersion' => $this->getSignatureVersion($data), 'signingRegion' => isset($data['credentialScope']['region']) ? $data['credentialScope']['region'] : $region, 'signingName' => isset($data['credentialScope']['service']) ? $data['credentialScope']['service'] : $service, ]; } private function getEndpointData($service, $region, $options) { $resolved = $this->resolveRegion($service, $region, $options); $data = isset($this->data['services'][$service]['endpoints'][$resolved]) ? $this->data['services'][$service]['endpoints'][$resolved] : []; $data += isset($this->data['services'][$service]['defaults']) ? $this->data['services'][$service]['defaults'] : []; $data += isset($this->data['defaults']) ? $this->data['defaults'] : []; return $data; } private function getSignatureVersion(array $data) { static $supportedBySdk = [ 's3v4', 'v4', 'anonymous', ]; $possibilities = array_intersect( $supportedBySdk, isset($data['signatureVersions']) ? $data['signatureVersions'] : ['v4'] ); return array_shift($possibilities); } private function resolveRegion($service, $region, $options) { if ($this->isServicePartitionGlobal($service) \|\| $this->isStsLegacyEndpointUsed($service, $region, $options) \|\| $this->isS3LegacyEndpointUsed($service, $region, $options) ) { return $this->getPartitionEndpoint($service); } return $region; } private function isServicePartitionGlobal($service) { return isset($this->data['services'][$service]['isRegionalized']) && false === $this->data['services'][$service]['isRegionalized'] && isset($this->data['services'][$service]['partitionEndpoint']); } /* * STS legacy endpoints used for valid regions unless option is explicitly * set to 'regional' * * @param string $service * @param string $region * @param array $options * @return bool / private function isStsLegacyEndpointUsed($service, $region, $options) { return $service === 'sts' && in_array($region, $this->stsLegacyGlobalRegions) && (empty($options['sts_regional_endpoints']) \|\| ConfigurationProvider::unwrap( $options['sts_regional_endpoints'] )->getEndpointsType() !== 'regional' ); } /* * S3 legacy us-east-1 endpoint used for valid regions unless option is explicitly * set to 'regional' * * @param string $service * @param string $region * @param array $options * @return bool */ private function isS3LegacyEndpointUsed($service, $region, $options) { return $service === 's3' && $region === 'us-east-1' && (empty($options['s3_us_east_1_regional_endpoint']) \|\| S3ConfigurationProvider::unwrap( $options['s3_us_east_1_regional_endpoint'] )->getEndpointsType() !== 'regional' ); } private function getPartitionEndpoint($service) { return $this->data['services'][$service]['partitionEndpoint']; } private function formatEndpoint($template, $service, $region) { return strtr($template, [ '{service}' => $service, '{region}' => $region, '{dnsSuffix}' => $this->data['dnsSuffix'], ]); } } Back

Edit File : Partition.php | Size : 7.97 KB

<?php
namespace Aws\Endpoint;

use ArrayAccess;
use Aws\HasDataTrait;
use Aws\Sts\RegionalEndpoints\ConfigurationProvider;
use Aws\S3\RegionalEndpoint\ConfigurationProvider as S3ConfigurationProvider;
use InvalidArgumentException as Iae;

/**
 * Default implementation of an AWS partition.
 */
final class Partition implements ArrayAccess, PartitionInterface
{
    use HasDataTrait;

private $stsLegacyGlobalRegions = [
        'ap-northeast-1',
        'ap-south-1',
        'ap-southeast-1',
        'ap-southeast-2',
        'aws-global',
        'ca-central-1',
        'eu-central-1',
        'eu-north-1',
        'eu-west-1',
        'eu-west-2',
        'eu-west-3',
        'sa-east-1',
        'us-east-1',
        'us-east-2',
        'us-west-1',
        'us-west-2',
    ];

/**
     * The partition constructor accepts the following options:
     *
     * - `partition`: (string, required) The partition name as specified in an
     *   ARN (e.g., `aws`)
     * - `partitionName`: (string) The human readable name of the partition
     *   (e.g., "AWS Standard")
     * - `dnsSuffix`: (string, required) The DNS suffix of the partition. This
     *   value is used to determine how endpoints in the partition are resolved.
     * - `regionRegex`: (string) A PCRE regular expression that specifies the
     *   pattern that region names in the endpoint adhere to.
     * - `regions`: (array, required) A map of the regions in the partition.
     *   Each key is the region as present in a hostname (e.g., `us-east-1`),
     *   and each value is a structure containing region information.
     * - `defaults`: (array) A map of default key value pairs to apply to each
     *   endpoint of the partition. Any value in an `endpoint` definition will
     *   supersede any values specified in `defaults`.
     * - `services`: (array, required) A map of service endpoint prefix name
     *   (the value found in a hostname) to information about the service.
     *
     * @param array $definition
     *
     * @throws Iae if any required options are missing
     */
    public function __construct(array $definition)
    {
        foreach (['partition', 'regions', 'services', 'dnsSuffix'] as $key) {
            if (!isset($definition[$key])) {
                throw new Iae("Partition missing required $key field");
            }
        }

$this->data = $definition;
    }

public function getName()
    {
        return $this->data['partition'];
    }

/**
     * @internal
     * @return mixed
     */
    public function getDnsSuffix()
    {
        return $this->data['dnsSuffix'];
    }

public function isRegionMatch($region, $service)
    {
        if (isset($this->data['regions'][$region])
            || isset($this->data['services'][$service]['endpoints'][$region])
        ) {
            return true;
        }

if (isset($this->data['regionRegex'])) {
            return (bool) preg_match(
                "@{$this->data['regionRegex']}@",
                $region
            );
        }

return false;
    }

public function getAvailableEndpoints(
        $service,
        $allowNonRegionalEndpoints = false
    ) {
        if ($this->isServicePartitionGlobal($service)) {
            return [$this->getPartitionEndpoint($service)];
        }

if (isset($this->data['services'][$service]['endpoints'])) {
            $serviceRegions = array_keys(
                $this->data['services'][$service]['endpoints']
            );

return $allowNonRegionalEndpoints
                ? $serviceRegions
                : array_intersect($serviceRegions, array_keys(
                    $this->data['regions']
                ));
        }

return [];
    }

public function __invoke(array $args = [])
    {
        $service = isset($args['service']) ? $args['service'] : '';
        $region = isset($args['region']) ? $args['region'] : '';
        $scheme = isset($args['scheme']) ? $args['scheme'] : 'https';
        $options = isset($args['options']) ? $args['options'] : [];
        $data = $this->getEndpointData($service, $region, $options);

return [
            'endpoint' => "{$scheme}://" . $this->formatEndpoint(
                    isset($data['hostname']) ? $data['hostname'] : '',
                    $service,
                    $region
                ),
            'signatureVersion' => $this->getSignatureVersion($data),
            'signingRegion' => isset($data['credentialScope']['region'])
                ? $data['credentialScope']['region']
                : $region,
            'signingName' => isset($data['credentialScope']['service'])
                ? $data['credentialScope']['service']
                : $service,
        ];
    }

private function getEndpointData($service, $region, $options)
    {
        $resolved = $this->resolveRegion($service, $region, $options);
        $data = isset($this->data['services'][$service]['endpoints'][$resolved])
            ? $this->data['services'][$service]['endpoints'][$resolved]
            : [];
        $data += isset($this->data['services'][$service]['defaults'])
            ? $this->data['services'][$service]['defaults']
            : [];
        $data += isset($this->data['defaults'])
            ? $this->data['defaults']
            : [];

return $data;
    }

private function getSignatureVersion(array $data)
    {
        static $supportedBySdk = [
            's3v4',
            'v4',
            'anonymous',
        ];

$possibilities = array_intersect(
            $supportedBySdk,
            isset($data['signatureVersions'])
                ? $data['signatureVersions']
                : ['v4']
        );

return array_shift($possibilities);
    }

private function resolveRegion($service, $region, $options)
    {
        if ($this->isServicePartitionGlobal($service)
            || $this->isStsLegacyEndpointUsed($service, $region, $options)
            || $this->isS3LegacyEndpointUsed($service, $region, $options)
        ) {
            return $this->getPartitionEndpoint($service);
        }

return $region;
    }

private function isServicePartitionGlobal($service)
    {
        return isset($this->data['services'][$service]['isRegionalized'])
            && false === $this->data['services'][$service]['isRegionalized']
            && isset($this->data['services'][$service]['partitionEndpoint']);
    }

/**
     * STS legacy endpoints used for valid regions unless option is explicitly
     * set to 'regional'
     *
     * @param string $service
     * @param string $region
     * @param array $options
     * @return bool
     */
    private function isStsLegacyEndpointUsed($service, $region, $options)
    {
        return $service === 'sts'
            && in_array($region, $this->stsLegacyGlobalRegions)
            && (empty($options['sts_regional_endpoints'])
                || ConfigurationProvider::unwrap(
                    $options['sts_regional_endpoints']
                )->getEndpointsType() !== 'regional'
            );
    }

/**
     * S3 legacy us-east-1 endpoint used for valid regions unless option is explicitly
     * set to 'regional'
     *
     * @param string $service
     * @param string $region
     * @param array $options
     * @return bool
     */
    private function isS3LegacyEndpointUsed($service, $region, $options)
    {
        return $service === 's3'
            && $region === 'us-east-1'
            && (empty($options['s3_us_east_1_regional_endpoint'])
                || S3ConfigurationProvider::unwrap(
                    $options['s3_us_east_1_regional_endpoint']
                )->getEndpointsType() !== 'regional'
            );
    }

private function getPartitionEndpoint($service)
    {
        return $this->data['services'][$service]['partitionEndpoint'];
    }

private function formatEndpoint($template, $service, $region)
    {
        return strtr($template, [
            '{service}' => $service,
            '{region}' => $region,
            '{dnsSuffix}' => $this->data['dnsSuffix'],
        ]);
    }
}

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