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<?php |
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/** |
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* Copyright 2017 American Express Travel Related Services Company, Inc. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
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* or implied. See the License for the specific language governing |
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* permissions and limitations under the License. |
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*/ |
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declare(strict_types=1); |
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namespace AmericanExpress\HyperledgerFabricClient\Channel; |
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use AmericanExpress\HyperledgerFabricClient\Chaincode\Chaincode; |
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use AmericanExpress\HyperledgerFabricClient\Exception\InvalidArgumentException; |
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use AmericanExpress\HyperledgerFabricClient\Exception\RuntimeException; |
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use AmericanExpress\HyperledgerFabricClient\Exception\ExceptionInterface; |
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use AmericanExpress\HyperledgerFabricClient\Peer\PeerCollectionInterface; |
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use AmericanExpress\HyperledgerFabricClient\Peer\PeerInterface; |
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use AmericanExpress\HyperledgerFabricClient\Peer\PeerOptionsInterface; |
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use AmericanExpress\HyperledgerFabricClient\Proposal\ResponseCollection; |
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use AmericanExpress\HyperledgerFabricClient\Proposal\ProposalProcessorInterface; |
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use AmericanExpress\HyperledgerFabricClient\ProtoFactory\ChannelHeaderFactory; |
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use AmericanExpress\HyperledgerFabricClient\ProtoFactory\ProposalFactory; |
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use AmericanExpress\HyperledgerFabricClient\Transaction\TransactionOptions; |
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use AmericanExpress\HyperledgerFabricClient\Identity\SerializedIdentityAwareHeaderGeneratorInterface; |
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use Assert\Assertion; |
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use Assert\AssertionFailedException; |
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use Hyperledger\Fabric\Protos\Peer\ChaincodeHeaderExtension; |
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use Hyperledger\Fabric\Protos\Peer\ChaincodeProposalPayload; |
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final class Channel implements ChannelInterface, PeerCollectionInterface |
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{ |
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/** |
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* @var string |
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*/ |
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private $name; |
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/** |
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* @var ProposalProcessorInterface |
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*/ |
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private $client; |
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/** |
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* @var PeerInterface[] $peers |
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*/ |
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private $peers; |
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/** |
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* @var SerializedIdentityAwareHeaderGeneratorInterface |
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*/ |
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private $headerGenerator; |
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/** |
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* @param string $name |
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* @param ProposalProcessorInterface $client |
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* @param SerializedIdentityAwareHeaderGeneratorInterface $userAwareHeaderGenerator |
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* @param PeerOptionsInterface[] $peers |
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* @throws InvalidArgumentException |
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*/ |
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public function __construct( |
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string $name, |
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ProposalProcessorInterface $client, |
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SerializedIdentityAwareHeaderGeneratorInterface $userAwareHeaderGenerator, |
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array $peers = [] |
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) { |
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try { |
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Assertion::allIsInstanceOf($peers, PeerInterface::class); |
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} catch (AssertionFailedException $e) { |
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throw new InvalidArgumentException( |
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sprintf('Failed to create Channel `%s` due to invalid Peer collection.', $name), |
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0, |
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$e |
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); |
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} |
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$this->name = $name; |
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$this->client = $client; |
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$this->headerGenerator = $userAwareHeaderGenerator; |
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$this->peers = $peers; |
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} |
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/** |
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* |
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* Returns a named Chaincode for a channel |
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* |
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* @param string | array $nameOrVersionedName |
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* @return Chaincode |
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* @throws InvalidArgumentException |
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*/ |
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public function getChaincode($nameOrVersionedName): Chaincode |
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{ |
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try { |
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return new Chaincode($nameOrVersionedName, $this); |
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} catch (ExceptionInterface $e) { |
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throw new InvalidArgumentException('Can not create Chaincode as requested', 0, $e); |
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} |
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} |
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/** |
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* @param PeerInterface[] ...$peers |
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* @return void |
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*/ |
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public function addPeers(PeerInterface ...$peers): void |
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{ |
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$this->peers = array_merge($this->peers, $peers); |
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} |
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/** |
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* @param PeerInterface[] $peers |
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* @return void |
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*/ |
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public function setPeers(array $peers): void |
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{ |
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$this->peers = []; |
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$this->addPeers(...$peers); |
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} |
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/** |
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* @return PeerInterface[] |
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*/ |
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public function getPeers(): array |
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{ |
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return $this->peers; |
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} |
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/** |
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* @param TransactionOptions|null $options |
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* @return PeerInterface[] |
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*/ |
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private function resolvePeers(TransactionOptions $options): array |
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{ |
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if ($options->hasPeers()) { |
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return $options->getPeers(); |
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} |
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return $this->getPeers(); |
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} |
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/** |
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* @param TransactionOptions|null $options |
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* @return TransactionOptions |
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*/ |
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private function normalizeTransactionOptions(TransactionOptions $options = null): TransactionOptions |
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{ |
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if ($options === null) { |
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$options = new TransactionOptions(); |
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} |
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return $options->withPeers(...$this->resolvePeers($options)); |
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} |
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/** |
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* |
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* Envelopes a Chaincode function invocation from a Chaincode object |
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* |
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* @param ChaincodeProposalPayload $payload |
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* @param ChaincodeHeaderExtension $extension |
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* @param TransactionOptions|null $options |
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* @return ResponseCollection |
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* @throws RuntimeException |
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*/ |
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public function processChaincodeProposal( |
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ChaincodeProposalPayload $payload, |
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ChaincodeHeaderExtension $extension, |
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TransactionOptions $options = null |
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): ResponseCollection { |
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$channelHeader = ChannelHeaderFactory::create($this->name); |
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$channelHeader->setExtension($extension->serializeToString()); |
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$options = $this->normalizeTransactionOptions($options); |
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if (!$options->hasPeers()) { |
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throw new RuntimeException('Could not determine peers for this transaction'); |
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} |
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$header = $this->headerGenerator->generateHeader($channelHeader); |
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$proposal = ProposalFactory::create($header, $payload->serializeToString()); |
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try { |
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return $this->client->processProposal($proposal, $options); |
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1 |
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} catch (ExceptionInterface $e) { |
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throw new RuntimeException( |
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'Unable to process Chaincode proposal', |
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1 |
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0, |
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$e |
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); |
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} |
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} |
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} |
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Our type inference engine has found a suspicous assignment of a value to a property. This check raises an issue when a value that can be of a given class or a super-class is assigned to a property that is type hinted more strictly.
Either this assignment is in error or an instanceof check should be added for that assignment.