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//
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package org.apache.impala.authorization;

import org.apache.impala.authorization.ranger.RangerAuthorizationFactory;
import org.apache.impala.authorization.sentry.SentryAuthorizationFactory;

/**
 * This enum contains the list of authorization providers supported in Impala.
 *
 * Associated with each enum value is an {@link AuthorizationFactory} implementation
 * used to create the correct authorization classes.
 */
public enum AuthorizationProvider {
  SENTRY(SentryAuthorizationFactory.class.getCanonicalName()),
  RANGER(RangerAuthorizationFactory.class.getCanonicalName()),
  NOOP(NoopAuthorizationFactory.class.getCanonicalName());

  private final String factoryClassName_;

  AuthorizationProvider(String factoryClassName) {
    this.factoryClassName_ = factoryClassName;
  }

  /**
   * Returns the canonical name of the {@link AuthorizationFactory} implementation
   * associated with this provider.
   *
   * @return the canonical name of the {@link AuthorizationFactory} impl for `this`
   */
  public String getAuthorizationFactoryClassName() {
    return factoryClassName_;
  }
}