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<?php |
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namespace Blocktrail\SDK\Services; |
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use Blocktrail\SDK\BlocktrailSDK; |
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use Blocktrail\SDK\UnspentOutputFinder; |
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class BlocktrailUnspentOutputFinder extends UnspentOutputFinder { |
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protected $client; |
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protected $retryLimit; |
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protected $sleepTime; |
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protected $retries; |
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protected $paginationLimit = 500; //max results to retrieve at a time |
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/** |
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* @param $apiKey |
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* @param $apiSecret |
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* @param string $network |
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* @param bool $testnet |
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* @param string $apiVersion |
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* @param null $apiEndpoint |
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*/ |
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public function __construct($apiKey, $apiSecret, $network = 'BTC', $testnet = false, $apiVersion = 'v1', $apiEndpoint = null) { |
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$this->client = new BlocktrailSDK($apiKey, $apiSecret, $network, $testnet, $apiVersion, $apiEndpoint); |
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$this->retryLimit = 5; |
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$this->sleepTime = 20; |
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$this->retries = 0; |
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} |
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/** |
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* modify the default limit on how many utxo results are returned per page |
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* @param $limit |
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*/ |
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public function setPaginationLimit($limit) { |
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$this->paginationLimit = $limit; |
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} |
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public function getUTXOs(array $addresses) { |
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$results = array(); |
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foreach ($addresses as $address) { |
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if ($this->debug) { |
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echo "\nchecking $address"; |
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} |
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//get the utxos for this address |
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$utxos = $this->getUnspentOutputs($address); |
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if (count($utxos) > 0) { |
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$results = array_merge($results, $utxos); |
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} |
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} |
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return $results; |
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} |
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/** |
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* gets unspent outputs for an address, returning and array of outputs with hash, index, value, and script pub hex |
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* |
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* @param $address |
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* @return array 2d array of unspent outputs as ['hash' => $hash, 'index' => $index, 'value' => $value, 'script_hex' => $scriptHex] |
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* @throws \Exception |
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*/ |
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protected function getUnspentOutputs($address) { |
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//get unspent outputs for the address - required data: hash, index, value, and script hex |
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$utxos = array(); |
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try { |
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$page = 1; |
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do { |
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$results = $this->client->addressUnspentOutputs($address, $page, $this->paginationLimit); |
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$utxos = array_merge($utxos, $results['data']); |
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$page++; |
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} while (count($results['data']) > 0); |
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} catch (\Exception $e) { |
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//if rate limit hit, sleep for a short while and try again |
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if ($this->retries < $this->retryLimit) { |
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$this->retries++; |
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sleep($this->sleepTime); |
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return $this->getUnspentOutputs($address); |
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} else { |
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throw $e; |
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} |
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} |
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//reset retry count |
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$this->retries = 0; |
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//reduce the returned data into the values we're interested in |
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View Code Duplication |
$result = array_map(function ($utxo) { |
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return array( |
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'hash' => $utxo['hash'], |
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'index' => $utxo['index'], |
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'value' => $utxo['value'], |
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'script_hex' => $utxo['script_hex'], |
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); |
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}, $utxos); |
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return $result; |
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} |
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} |
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blocktrail /
blocktrail-sdk-php
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.