Example usage for org.apache.hadoop.security UserGroupInformation hashCode

Introduction

In this page you can find the example usage for org.apache.hadoop.security UserGroupInformation hashCode.

Prototype

@Override
public int hashCode() 

Source Link

Document

Return the hash of the subject.

Usage

From source file:org.apache.phoenix.queryserver.server.PhoenixDoAsCallbackTest.java

License:Apache License

@Test
public void proxyingUsersAreCached() throws Exception {
    Configuration conf = new Configuration(false);
    // The user "server" can impersonate anyone
    conf.set("hadoop.proxyuser.server.groups", "*");
    conf.set("hadoop.proxyuser.server.hosts", "*");
    // Trigger ProxyUsers to refresh itself with the above configuration
    ProxyUsers.refreshSuperUserGroupsConfiguration(conf);
    UserGroupInformation serverUgi = UserGroupInformation.createUserForTesting("server", new String[0]);
    PhoenixDoAsCallback callback = new PhoenixDoAsCallback(serverUgi, conf);

    UserGroupInformation user1 = callback.doAsRemoteUser("user1", "localhost:1234",
            new Callable<UserGroupInformation>() {
                public UserGroupInformation call() throws Exception {
                    return UserGroupInformation.getCurrentUser();
                }/*  w  w w .j  a  va2  s  .  c  o  m*/
            });

    UserGroupInformation user2 = callback.doAsRemoteUser("user2", "localhost:1235",
            new Callable<UserGroupInformation>() {
                public UserGroupInformation call() throws Exception {
                    return UserGroupInformation.getCurrentUser();
                }
            });

    UserGroupInformation user1Reference = callback.doAsRemoteUser("user1", "localhost:1234",
            new Callable<UserGroupInformation>() {
                public UserGroupInformation call() throws Exception {
                    return UserGroupInformation.getCurrentUser();
                }
            });

    // The UserGroupInformation.getCurrentUser() actually returns a new UGI instance, but the internal
    // subject is the same. We can verify things will work as expected that way.
    assertNotEquals(user1.hashCode(), user2.hashCode());
    assertEquals("These should be the same (cached) instance", user1.hashCode(), user1Reference.hashCode());
    assertEquals("These should be the same (cached) instance", user1, user1Reference);
}

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