79 lines
2.5 KiB
PHP
79 lines
2.5 KiB
PHP
<?php
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namespace Aws\Ec2;
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use Aws\AwsClientInterface;
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use Aws\Signature\SignatureV4;
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use Aws\Endpoint\EndpointProvider;
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use Aws\CommandInterface;
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use GuzzleHttp\Psr7\Uri;
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use Psr\Http\Message\RequestInterface;
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/**
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* @internal Adds computed values to the CopySnapshot operation.
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*/
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class CopySnapshotMiddleware
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{
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private $client;
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private $endpointProvider;
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private $nextHandler;
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public static function wrap(AwsClientInterface $client, callable $endpointProvider)
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{
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return function (callable $handler) use ($endpointProvider, $client) {
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$f = new CopySnapshotMiddleware($endpointProvider, $client, $handler);
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return $f;
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};
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}
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public function __construct(
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callable $endpointProvider,
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AwsClientInterface $client,
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callable $nextHandler
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) {
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$this->endpointProvider = $endpointProvider;
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$this->client = $client;
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$this->nextHandler = $nextHandler;
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}
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public function __invoke(CommandInterface $cmd, RequestInterface $request = null)
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{
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if ($cmd->getName() == 'CopySnapshot'
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&& (!isset($cmd->__skipCopySnapshot))
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) {
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$cmd['PresignedUrl'] = $this->createPresignedUrl($this->client, $cmd);
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$cmd['DestinationRegion'] = $this->client->getRegion();
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}
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$f = $this->nextHandler;
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return $f($cmd, $request);
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}
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private function createPresignedUrl(
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AwsClientInterface $client,
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CommandInterface $cmd
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) {
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$newCmd = $client->getCommand('CopySnapshot', $cmd->toArray());
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// Avoid infinite recursion by flagging the new command.
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$newCmd->__skipCopySnapshot = true;
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// Serialize a request for the CopySnapshot operation.
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$request = \Aws\serialize($newCmd);
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// Create the new endpoint for the target endpoint.
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$endpoint = EndpointProvider::resolve($this->endpointProvider, [
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'region' => $cmd['SourceRegion'],
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'service' => 'ec2'
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])['endpoint'];
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// Set the request to hit the target endpoint.
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$uri = $request->getUri()->withHost((new Uri($endpoint))->getHost());
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$request = $request->withUri($uri);
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// Create a presigned URL for our generated request.
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$signer = new SignatureV4('ec2', $cmd['SourceRegion']);
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return (string) $signer->presign(
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SignatureV4::convertPostToGet($request),
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$client->getCredentials()->wait(),
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'+1 hour'
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)->getUri();
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}
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}
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