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/**
 * Copyright (C) 2014 Dasasian ([email protected])
 *
 * Licensed 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 com.dasasian.chok.index;

import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.io.Serializable;

@Deprecated
public class IndexMetaData implements Writable {

//    private static final long serialVersionUID = 1L;

    private Text _path = new Text();
    private Text _analyzerClassName = new Text();
    private int _replicationLevel;
    private IndexState _state;
    private Text _errorMessage = new Text();

    public IndexMetaData(String path, String analyzerName, int replicationLevel, IndexState state) {
        this._path.set(path);
        this._analyzerClassName.set(analyzerName);
        this._replicationLevel = replicationLevel;
        this._state = state;
    }

    public IndexMetaData() {
        // for serialization
    }

    public String getPath() {
        return this._path.toString();
    }

    public String getAnalyzerClassName() {
        return this._analyzerClassName.toString();
    }

    public IndexState getState() {
        return this._state;
    }

    public void setState(IndexState state) {
        if (state == IndexState.ERROR) {
            throw new IllegalStateException("please set an error message");
        }
        this._state = state;
    }

    public void setState(IndexState state, String errorMsg) {
        this._state = state;
        if (errorMsg != null)
            this._errorMessage.set(errorMsg);
    }

    public String getErrorMessage() {
        return this._errorMessage.toString();
    }

    public int getReplicationLevel() {
        return this._replicationLevel;
    }

    public String toString() {
        return "state: " + _state + ", replication: " + _replicationLevel + ", path: " + _path + ", error: " + _errorMessage;
    }

    public void readFields(DataInput in) throws IOException {
        this._path.readFields(in);
        this._analyzerClassName.readFields(in);
        this._replicationLevel = in.readInt();
        this._state = IndexState.values()[in.readByte()];
        if (this._state == IndexState.ERROR)
            this._errorMessage.readFields(in);
    }

    public void write(DataOutput out) throws IOException {
        this._path.write(out);
        this._analyzerClassName.write(out);
        out.writeInt(this._replicationLevel);
        out.writeByte(this._state.ordinal());
        if (this._state == IndexState.ERROR)
            this._errorMessage.write(out);
    }

    @Deprecated
    public enum IndexState {
        ANNOUNCED, DEPLOYED, ERROR, DEPLOYING, REPLICATING
    }
}