Authentication

A client is authenticated when it connects with valid credentials to a VMware GemFire® cache server that is configured with the client authentication callback. For details on the server’s role in authentication and what it expects from the client, see Implementing Authentication in the VMware GemFire® User Guide.

In your application, authentication credentials must be set when creating the cache. In practice, this means setting the authentication credentials when you create the CacheFactory.

C++ Authentication Example

In this C++ authentication example, the CacheFactory creation process sets the authentication callback:

  auto cacheFactory = CacheFactory(config);
  auto authInitialize = std::make_shared<UserPasswordAuthInit>();
  cacheFactory.set("log-level", "none");
  cacheFactory.setAuthInitialize(authInitialize);

Credentials are implemented in the getCredentials member function of the AuthInitialize abstract class.

class UserPasswordAuthInit : public AuthInitialize {
public:
  UserPasswordAuthInit() = default;

  ~UserPasswordAuthInit() noexcept override = default;

  std::shared_ptr<Properties> getCredentials(
    const std::shared_ptr<Properties> &securityprops,
    const std::string &) override {
    std::shared_ptr<Cacheable> userName;
    if (securityprops == nullptr ||
      (userName = securityprops->find(SECURITY_USERNAME)) == nullptr) {
      throw AuthenticationFailedException(
      "UserPasswordAuthInit: user name "
      "property [SECURITY_USERNAME] not set.");
    }

    auto credentials = Properties::create();
    credentials->insert(SECURITY_USERNAME, userName->toString().c_str());
    auto passwd = securityprops->find(SECURITY_PASSWORD);
    if (passwd == nullptr) {
      passwd = CacheableString::create("");
    }
    credentials->insert(SECURITY_PASSWORD, passwd->value().c_str());
    return credentials;
  }

  void close() override { return; }
};