/**
* @param BlockCypherHttpConfig $httpConfig
* @param string $request
* @param mixed $options
* @return mixed|void
* @throws BlockCypherConfigurationException
* @throws BlockCypherInvalidCredentialException
* @throws BlockCypherMissingCredentialException
*/
public function handle($httpConfig, $request, $options)
{
$credential = $this->apiContext->getCredential();
$config = $this->apiContext->getConfig();
if ($credential == null) {
// Try picking credentials from the config file
$credMgr = BlockCypherCredentialManager::getInstance($config);
$credValues = $credMgr->getCredentialObject();
if (!is_array($credValues)) {
throw new BlockCypherMissingCredentialException("Empty or invalid credentials passed");
}
$credential = new SimpleTokenCredential($credValues['accessToken']);
}
if ($credential == null || !$credential instanceof SimpleTokenCredential) {
throw new BlockCypherInvalidCredentialException("Invalid credentials passed");
}
$path = isset($options['path']) ? $options['path'] : '';
$url = $this->getAbsoluteUrl($path, $this->apiContext);
$httpConfig->setUrl($url);
if (!array_key_exists("User-Agent", $httpConfig->getHeaders())) {
$httpConfig->addHeader("User-Agent", BlockCypherUserAgent::getValue(BlockCypherConstants::SDK_NAME, BlockCypherConstants::SDK_VERSION));
}
/*if (!is_null($credential) && $credential instanceof SimpleTokenCredential && is_null($httpConfig->getHeader('Authorization'))) {
$httpConfig->addHeader('Authorization', "Bearer " . $credential->getAccessToken($config), false);
}*/
if ($httpConfig->getMethod() == 'POST' || $httpConfig->getMethod() == 'PUT') {
$httpConfig->addHeader('BlockCypher-Request-Id', $this->apiContext->getRequestId());
}
// Add any additional Headers that they may have provided
$headers = $this->apiContext->getRequestHeaders();
foreach ($headers as $key => $value) {
$httpConfig->addHeader($key, $value);
}
}
/**
* Executes an HTTP request
*
* @param string $data query string OR POST content as a string
* @return mixed
* @throws BlockCypherConnectionException
*/
public function execute($data)
{
//Initialize the logger
$this->logger->info($this->httpConfig->getMethod() . ' ' . $this->httpConfig->getUrl());
//Initialize Curl Options
$ch = curl_init($this->httpConfig->getUrl());
curl_setopt_array($ch, $this->httpConfig->getCurlOptions());
curl_setopt($ch, CURLOPT_URL, $this->httpConfig->getUrl());
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLINFO_HEADER_OUT, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $this->getHttpHeaders());
//Determine Curl Options based on Method
switch ($this->httpConfig->getMethod()) {
case 'POST':
curl_setopt($ch, CURLOPT_POST, true);
case 'PUT':
case 'PATCH':
case 'DELETE':
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
break;
}
//Default Option if Method not of given types in switch case
if ($this->httpConfig->getMethod() != NULL) {
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $this->httpConfig->getMethod());
}
//Logging Each Headers for debugging purposes
foreach ($this->getHttpHeaders() as $header) {
//TODO: Strip out credentials and other secure info when logging.
// $this->logger->debug($header);
}
//Execute Curl Request
$result = curl_exec($ch);
//Retrieve Response Status
$httpStatus = curl_getinfo($ch, CURLINFO_HTTP_CODE);
//Retry if Certificate Exception
if (curl_errno($ch) == 60) {
$this->logger->info("Invalid or no certificate authority found - Retrying using bundled CA certs file");
curl_setopt($ch, CURLOPT_CAINFO, dirname(__FILE__) . '/cacert.pem');
$result = curl_exec($ch);
//Retrieve Response Status
$httpStatus = curl_getinfo($ch, CURLINFO_HTTP_CODE);
}
//Retry if Failing
$retries = 0;
if (in_array($httpStatus, self::$retryCodes) && $this->httpConfig->getHttpRetryCount() != null) {
$this->logger->info("Got {$httpStatus} response from server. Retrying");
do {
$result = curl_exec($ch);
//Retrieve Response Status
$httpStatus = curl_getinfo($ch, CURLINFO_HTTP_CODE);
} while (in_array($httpStatus, self::$retryCodes) && ++$retries < $this->httpConfig->getHttpRetryCount());
}
//Throw Exception if Retries and Certificates does not work
if (curl_errno($ch)) {
$ex = new BlockCypherConnectionException($this->httpConfig->getUrl(), curl_error($ch), curl_errno($ch));
curl_close($ch);
throw $ex;
}
// Get Request and Response Headers
$requestHeaders = curl_getinfo($ch, CURLINFO_HEADER_OUT);
//Using alternative solution to CURLINFO_HEADER_SIZE as it throws invalid number when called using PROXY.
$responseHeaderSize = strlen($result) - curl_getinfo($ch, CURLINFO_SIZE_DOWNLOAD);
$responseHeaders = substr($result, 0, $responseHeaderSize);
$result = substr($result, $responseHeaderSize);
//$this->logger->debug("Request Retries \t: " . $retries);
$this->logger->debug("Request Headers \t: " . str_replace("\r\n", ", ", $requestHeaders));
$this->logger->debug(($data && $data != '' ? "Request Data\t\t: " . $data : "No Request Payload") . "\n" . str_repeat('-', 128) . "\n");
$this->logger->info("Response Status \t: " . $httpStatus);
$this->logger->debug("Response Headers\t: " . str_replace("\r\n", ", ", $responseHeaders));
//Close the curl request
curl_close($ch);
//More Exceptions based on HttpStatus Code
if (in_array($httpStatus, self::$retryCodes)) {
$ex = new BlockCypherConnectionException($this->httpConfig->getUrl(), "Got Http response code {$httpStatus} when accessing {$this->httpConfig->getUrl()}. " . "Retried {$retries} times.");
$ex->setData($result);
$this->logger->error("Got Http response code {$httpStatus} when accessing {$this->httpConfig->getUrl()}. " . "Retried {$retries} times." . $result);
$this->logger->debug("\n\n" . str_repeat('=', 128) . "\n");
throw $ex;
} else {
if ($httpStatus < 200 || $httpStatus >= 300) {
$ex = new BlockCypherConnectionException($this->httpConfig->getUrl(), "Got Http response code {$httpStatus} when accessing {$this->httpConfig->getUrl()}.", $httpStatus);
$ex->setData($result);
$this->logger->error("Got Http response code {$httpStatus} when accessing {$this->httpConfig->getUrl()}. " . $result);
$this->logger->debug("\n\n" . str_repeat('=', 128) . "\n");
throw $ex;
}
}
$this->logger->debug(($result && $result != '' ? "Response Data \t: " . $result : "No Response Body") . "\n\n" . str_repeat('=', 128) . "\n");
//Return result object
return $result;
}
