init static method

OSSClient init({ required String endpoint, required String bucket, required Future<Credentials> credentials(), })

• 初始化设置endpoint bucket getCredentials
• credentials 获取 Credentials
• 一旦初始化，则signer清空，上传前会重新拉取oss信息

Implementation

static OSSClient init({
  required String endpoint,
  required String bucket,
  required Future<Credentials> Function() credentials,
}) {
  _instance = OSSClient._(
    endpoint: endpoint,
    bucket: bucket,
    credentials: credentials,
  );
  return _instance!;
}