如何实现适配器SDK中的connection和invoke方法
要构建一个适配器SDK以连接和调用指定的软件平台，需要引用并实例化适配器类，并在实例化过程中传递基本连接参数给SDK构造方法。
namespace Adapter\PlatformName\SDK;
class PlatformNameSDK {
protected $connectorId = 'connectorId';
protected $env = '';
protected $host = '';
protected $login = [
'appKey' => 'xxxxxx',
'appSecret' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
];
protected $token = null;
protected $client = \GuzzleHttp\Client::class;
public function __construct($connectorId, $params, string $env = '') {
$this->connectorId = $connectorId;
$this->host = $params['host'];
$this->login = $params;
$this->env = $env;
$this->client = new \GuzzleHttp\Client();
}
public function invoke(string $api, $params = [], $method = 'POST') {}
public function connection() {}
}实现connection方法
connection()方法主要用于连接到目标平台并获取token，特别是对于需要token鉴权的平台，这个方法负责管理token的获取和缓存。
public function connection() {
$cacheKey = $this->connectorId . $this->env;
$token = Cache::get($cacheKey);
if ($token) {
$this->token = $token;
return ['status' => true, 'token' => $token];
}
$url = $this->host . '/open-apis/auth/v3/tenant_access_token/internal';
$response = $this->client->post($url, [
'form_params' => $this->login,
'headers' => ['Content-Type' => 'application/json;charset=utf-8']
]);
$body = $response->getBody();
$arr = json_decode((string)$body, true);
if ($arr['code'] == 0) {
$this->token = $arr['tenant_access_token'];
Cache::put($cacheKey, $this->token, $arr['expire'] - 100);
}
return $arr;
}实现invoke方法
invoke()方法用于实现具体接口的调用。
public function invoke(string $api, $params = [], $method = 'POST') {
$url = $this->host . $api;
$sign = $this->generateSign($params);
$headers = [
'accesstoken' => $this->token,
'sign' => $sign,
'Content-Type' => 'application/json'
];
if (strtolower($method) === 'get') {
$response = $this->client->get($url, [
'query' => $params,
'http_errors' => false,
'headers' => $headers
]);
} else {
$response = $this->client->post($url, [
'body' => json_encode($params),
'http_errors' => false,
'headers' => $headers
]);
}
$body = (string) $response->getBody();
return json_decode($body, true);
}
protected function generateSign($params) {
$jsonStr = json_encode($params) . $this->login['appKey'];
return md5($jsonStr);
}这个实现展示了如何用PHP的GuzzleHttp\Client来处理HTTP请求，如何生成签名，以及如何管理token缓存。