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<?php /* * Copyright 2016, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ namespace Google\ApiCore; /** * Encapsulates the custom GAPIC header information. */ class AgentHeaderDescriptor { const AGENT_HEADER_KEY = 'x-goog-api-client'; const UNKNOWN_VERSION = ''; private $metricsHeaders; /** * @param array $headerInfo { * Optional. * * @type string $phpVersion the PHP version. * @type string $libName the name of the client application. * @type string $libVersion the version of the client application. * @type string $gapicVersion the code generator version of the GAPIC library. * @type string $apiCoreVersion the ApiCore version. * @type string $grpcVersion the gRPC version. * } */ public function __construct($headerInfo) { $metricsHeaders = []; // The ordering of the headers is important. We use the fact that $metricsHeaders is an // ordered dict. The desired ordering is: // - phpVersion (gl-php/) // - clientName (e.g. gccl/) // - gapicVersion (gapic/) // - apiCoreVersion (gax/) // - grpcVersion (grpc/) $phpVersion = isset($headerInfo['phpVersion']) ? $headerInfo['phpVersion'] : phpversion(); $metricsHeaders['gl-php'] = $phpVersion; if (isset($headerInfo['libName'])) { $clientVersion = isset($headerInfo['libVersion']) ? $headerInfo['libVersion'] : self::UNKNOWN_VERSION; $metricsHeaders[$headerInfo['libName']] = $clientVersion; } $codeGenVersion = isset($headerInfo['gapicVersion']) ? $headerInfo['gapicVersion'] : self::UNKNOWN_VERSION; $metricsHeaders['gapic'] = $codeGenVersion; $apiCoreVersion = isset($headerInfo['apiCoreVersion']) ? $headerInfo['apiCoreVersion'] : Version::getApiCoreVersion(); $metricsHeaders['gax'] = $apiCoreVersion; $grpcVersion = isset($headerInfo['grpcVersion']) ? $headerInfo['grpcVersion'] : phpversion('grpc'); $metricsHeaders['grpc'] = $grpcVersion; $this->metricsHeaders = $metricsHeaders; } /** * Returns an associative array that contains GAPIC header metadata. * * @return array */ public function getHeader() { $metricsList = []; foreach ($this->metricsHeaders as $key => $value) { $metricsList[] = $key . "/" . $value; } return [self::AGENT_HEADER_KEY => [implode(" ", $metricsList)]]; } /** * Returns the version string for ApiCore. * * @return string */ public static function getApiCoreVersion() { return self::API_CORE_VERSION; } }