org.apache.accumulo.core.client.impl.AuthenticationTokenIdentifier.java Source code

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Here is the source code for org.apache.accumulo.core.client.impl.AuthenticationTokenIdentifier.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.accumulo.core.client.impl;

import static java.util.Objects.requireNonNull;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.nio.ByteBuffer;

import org.apache.accumulo.core.client.admin.DelegationTokenConfig;
import org.apache.accumulo.core.security.thrift.TAuthenticationTokenIdentifier;
import org.apache.accumulo.core.util.ByteBufferUtil;
import org.apache.accumulo.core.util.ThriftMessageUtil;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.security.token.TokenIdentifier;

/**
 * Implementation that identifies the underlying {@link Token} for Accumulo.
 */
public class AuthenticationTokenIdentifier extends TokenIdentifier {
    public static final Text TOKEN_KIND = new Text("ACCUMULO_AUTH_TOKEN");

    private TAuthenticationTokenIdentifier impl = null;
    private DelegationTokenConfig cfg = null;

    public AuthenticationTokenIdentifier() {
        // noop for Writable
    }

    public AuthenticationTokenIdentifier(String principal) {
        this(principal, null);
    }

    public AuthenticationTokenIdentifier(String principal, DelegationTokenConfig cfg) {
        requireNonNull(principal);
        impl = new TAuthenticationTokenIdentifier(principal);
        this.cfg = cfg;
    }

    public AuthenticationTokenIdentifier(String principal, int keyId, long issueDate, long expirationDate,
            String instanceId) {
        requireNonNull(principal);
        impl = new TAuthenticationTokenIdentifier(principal);
        impl.setKeyId(keyId);
        impl.setIssueDate(issueDate);
        impl.setExpirationDate(expirationDate);
        impl.setInstanceId(instanceId);
    }

    public AuthenticationTokenIdentifier(AuthenticationTokenIdentifier identifier) {
        requireNonNull(identifier);
        impl = new TAuthenticationTokenIdentifier(identifier.getThriftIdentifier());
    }

    public AuthenticationTokenIdentifier(TAuthenticationTokenIdentifier identifier) {
        requireNonNull(identifier);
        impl = new TAuthenticationTokenIdentifier(identifier);
    }

    public void setKeyId(int keyId) {
        impl.setKeyId(keyId);
    }

    public int getKeyId() {
        requireNonNull(impl, "Identifier not initialized");
        return impl.getKeyId();
    }

    public void setIssueDate(long issueDate) {
        requireNonNull(impl, "Identifier not initialized");
        impl.setIssueDate(issueDate);
    }

    public long getIssueDate() {
        requireNonNull(impl, "Identifier not initialized");
        return impl.getIssueDate();
    }

    public void setExpirationDate(long expirationDate) {
        requireNonNull(impl, "Identifier not initialized");
        impl.setExpirationDate(expirationDate);
    }

    public long getExpirationDate() {
        requireNonNull(impl, "Identifier not initialized");
        return impl.getExpirationDate();
    }

    public void setInstanceId(String instanceId) {
        requireNonNull(impl, "Identifier not initialized");
        impl.setInstanceId(instanceId);
    }

    public String getInstanceId() {
        requireNonNull(impl, "Identifier not initialized");
        return impl.getInstanceId();
    }

    public TAuthenticationTokenIdentifier getThriftIdentifier() {
        requireNonNull(impl);
        return impl;
    }

    /**
     * A configuration from the requesting user, may be null.
     */
    public DelegationTokenConfig getConfig() {
        return cfg;
    }

    @Override
    public void write(DataOutput out) throws IOException {
        if (null != impl) {
            ThriftMessageUtil msgUtil = new ThriftMessageUtil();
            ByteBuffer serialized = msgUtil.serialize(impl);
            out.writeInt(serialized.limit());
            ByteBufferUtil.write(out, serialized);
        } else {
            out.writeInt(0);
        }
    }

    @Override
    public void readFields(DataInput in) throws IOException {
        int length = in.readInt();
        if (length > 0) {
            ThriftMessageUtil msgUtil = new ThriftMessageUtil();
            byte[] serialized = new byte[length];
            in.readFully(serialized);
            impl = new TAuthenticationTokenIdentifier();
            msgUtil.deserialize(serialized, impl);
        }
    }

    @Override
    public Text getKind() {
        return TOKEN_KIND;
    }

    @Override
    public UserGroupInformation getUser() {
        if (null != impl && impl.isSetPrincipal()) {
            return UserGroupInformation.createRemoteUser(impl.getPrincipal());
        }
        return null;
    }

    @Override
    public int hashCode() {
        if (null == impl) {
            return 0;
        }
        HashCodeBuilder hcb = new HashCodeBuilder(7, 11);
        if (impl.isSetPrincipal()) {
            hcb.append(impl.getPrincipal());
        }
        if (impl.isSetKeyId()) {
            hcb.append(impl.getKeyId());
        }
        if (impl.isSetIssueDate()) {
            hcb.append(impl.getIssueDate());
        }
        if (impl.isSetExpirationDate()) {
            hcb.append(impl.getExpirationDate());
        }
        if (impl.isSetInstanceId()) {
            hcb.append(impl.getInstanceId());
        }
        return hcb.toHashCode();
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder(128);
        sb.append("AuthenticationTokenIdentifier(").append(impl).append(")");
        return sb.toString();
    }

    @Override
    public boolean equals(Object o) {
        if (null == o) {
            return false;
        }
        if (o instanceof AuthenticationTokenIdentifier) {
            AuthenticationTokenIdentifier other = (AuthenticationTokenIdentifier) o;
            if (null == impl) {
                return null == other.impl;
            }
            return impl.equals(other.impl);
        }
        return false;
    }
}