/**
 * 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.hcatalog.cli;

import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.Properties;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hive.metastore.HiveMetaHook;
import org.apache.hadoop.hive.metastore.api.Database;
import org.apache.hadoop.hive.ql.io.HiveOutputFormat;
import org.apache.hadoop.hive.ql.metadata.AuthorizationException;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.metadata.Partition;
import org.apache.hadoop.hive.ql.plan.TableDesc;
import org.apache.hadoop.hive.ql.security.HiveAuthenticationProvider;
import org.apache.hadoop.hive.ql.security.authorization.HiveAuthorizationProvider;
import org.apache.hadoop.hive.ql.security.authorization.Privilege;
import org.apache.hadoop.hive.serde2.SerDe;
import org.apache.hadoop.hive.serde2.columnar.ColumnarSerDe;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.io.WritableComparable;
import org.apache.hadoop.mapred.InputFormat;
import org.apache.hadoop.mapred.InputSplit;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.OutputFormat;
import org.apache.hadoop.mapred.RecordReader;
import org.apache.hadoop.mapred.RecordWriter;
import org.apache.hadoop.mapred.Reporter;
import org.apache.hadoop.util.Progressable;
import org.apache.hcatalog.data.HCatRecord;
import org.apache.hcatalog.mapreduce.HCatStorageHandler;

class DummyStorageHandler extends HCatStorageHandler {

    @Override
    public Configuration getConf() {
        return null;
    }

    @Override
    public void setConf(Configuration conf) {
    }

    @Override
    public Class<? extends InputFormat> getInputFormatClass() {
        return DummyInputFormat.class;
    }

    @Override
    public Class<? extends OutputFormat> getOutputFormatClass() {
        return DummyOutputFormat.class;
    }

    @Override
    public Class<? extends SerDe> getSerDeClass() {
        return ColumnarSerDe.class;
    }

    @Override
    public HiveMetaHook getMetaHook() {
        return null;
    }

    @Override
    public void configureInputJobProperties(TableDesc tableDesc, Map<String, String> jobProperties) {
    }

    @Override
    public void configureOutputJobProperties(TableDesc tableDesc, Map<String, String> jobProperties) {
    }

    @Override
    public HiveAuthorizationProvider getAuthorizationProvider()
        throws HiveException {
        return new DummyAuthProvider();
    }

    private class DummyAuthProvider implements HiveAuthorizationProvider {

        @Override
        public Configuration getConf() {
            return null;
        }

        /* @param conf
         * @see org.apache.hadoop.conf.Configurable#setConf(org.apache.hadoop.conf.Configuration)
         */
        @Override
        public void setConf(Configuration conf) {
        }

        /* @param conf
        /* @throws HiveException
         * @see org.apache.hadoop.hive.ql.security.authorization.HiveAuthorizationProvider#init(org.apache.hadoop.conf.Configuration)
         */
        @Override
        public void init(Configuration conf) throws HiveException {
        }

        /* @return HiveAuthenticationProvider
         * @see org.apache.hadoop.hive.ql.security.authorization.HiveAuthorizationProvider#getAuthenticator()
         */
        @Override
        public HiveAuthenticationProvider getAuthenticator() {
            return null;
        }

        /* @param authenticator
         * @see org.apache.hadoop.hive.ql.security.authorization.HiveAuthorizationProvider#setAuthenticator(org.apache.hadoop.hive.ql.security.HiveAuthenticationProvider)
         */
        @Override
        public void setAuthenticator(HiveAuthenticationProvider authenticator) {
        }

        /* @param readRequiredPriv
        /* @param writeRequiredPriv
        /* @throws HiveException
        /* @throws AuthorizationException
         * @see org.apache.hadoop.hive.ql.security.authorization.HiveAuthorizationProvider#authorize(org.apache.hadoop.hive.ql.security.authorization.Privilege[], org.apache.hadoop.hive.ql.security.authorization.Privilege[])
         */
        @Override
        public void authorize(Privilege[] readRequiredPriv,
                              Privilege[] writeRequiredPriv) throws HiveException,
            AuthorizationException {
        }

        /* @param db
        /* @param readRequiredPriv
        /* @param writeRequiredPriv
        /* @throws HiveException
        /* @throws AuthorizationException
         * @see org.apache.hadoop.hive.ql.security.authorization.HiveAuthorizationProvider#authorize(org.apache.hadoop.hive.metastore.api.Database, org.apache.hadoop.hive.ql.security.authorization.Privilege[], org.apache.hadoop.hive.ql.security.authorization.Privilege[])
         */
        @Override
        public void authorize(Database db, Privilege[] readRequiredPriv,
                              Privilege[] writeRequiredPriv) throws HiveException,
            AuthorizationException {
        }

        /* @param table
        /* @param readRequiredPriv
        /* @param writeRequiredPriv
        /* @throws HiveException
        /* @throws AuthorizationException
         * @see org.apache.hadoop.hive.ql.security.authorization.HiveAuthorizationProvider#authorize(org.apache.hadoop.hive.ql.metadata.Table, org.apache.hadoop.hive.ql.security.authorization.Privilege[], org.apache.hadoop.hive.ql.security.authorization.Privilege[])
         */
        @Override
        public void authorize(org.apache.hadoop.hive.ql.metadata.Table table, Privilege[] readRequiredPriv,
                              Privilege[] writeRequiredPriv) throws HiveException,
            AuthorizationException {
        }

        /* @param part
        /* @param readRequiredPriv
        /* @param writeRequiredPriv
        /* @throws HiveException
        /* @throws AuthorizationException
         * @see org.apache.hadoop.hive.ql.security.authorization.HiveAuthorizationProvider#authorize(org.apache.hadoop.hive.ql.metadata.Partition, org.apache.hadoop.hive.ql.security.authorization.Privilege[], org.apache.hadoop.hive.ql.security.authorization.Privilege[])
         */
        @Override
        public void authorize(Partition part, Privilege[] readRequiredPriv,
                              Privilege[] writeRequiredPriv) throws HiveException,
            AuthorizationException {
        }

        /* @param table
        /* @param part
        /* @param columns
        /* @param readRequiredPriv
        /* @param writeRequiredPriv
        /* @throws HiveException
        /* @throws AuthorizationException
         * @see org.apache.hadoop.hive.ql.security.authorization.HiveAuthorizationProvider#authorize(org.apache.hadoop.hive.ql.metadata.Table, org.apache.hadoop.hive.ql.metadata.Partition, java.util.List, org.apache.hadoop.hive.ql.security.authorization.Privilege[], org.apache.hadoop.hive.ql.security.authorization.Privilege[])
         */
        @Override
        public void authorize(org.apache.hadoop.hive.ql.metadata.Table table, Partition part, List<String> columns,
                              Privilege[] readRequiredPriv, Privilege[] writeRequiredPriv)
            throws HiveException, AuthorizationException {
        }

    }

    /**
     * The Class DummyInputFormat is a dummy implementation of the old hadoop
     * mapred.InputFormat required by HiveStorageHandler.
     */
    class DummyInputFormat implements
        InputFormat<WritableComparable, HCatRecord> {

        /*
         * @see
         * org.apache.hadoop.mapred.InputFormat#getRecordReader(org.apache.hadoop
         * .mapred.InputSplit, org.apache.hadoop.mapred.JobConf,
         * org.apache.hadoop.mapred.Reporter)
         */
        @Override
        public RecordReader<WritableComparable, HCatRecord> getRecordReader(
            InputSplit split, JobConf jobconf, Reporter reporter)
            throws IOException {
            throw new IOException("This operation is not supported.");
        }

        /*
         * @see
         * org.apache.hadoop.mapred.InputFormat#getSplits(org.apache.hadoop.
         * mapred .JobConf, int)
         */
        @Override
        public InputSplit[] getSplits(JobConf jobconf, int number)
            throws IOException {
            throw new IOException("This operation is not supported.");
        }
    }

    /**
     * The Class DummyOutputFormat is a dummy implementation of the old hadoop
     * mapred.OutputFormat and HiveOutputFormat required by HiveStorageHandler.
     */
    class DummyOutputFormat implements
        OutputFormat<WritableComparable<?>, HCatRecord>,
        HiveOutputFormat<WritableComparable<?>, HCatRecord> {

        /*
         * @see
         * org.apache.hadoop.mapred.OutputFormat#checkOutputSpecs(org.apache
         * .hadoop .fs.FileSystem, org.apache.hadoop.mapred.JobConf)
         */
        @Override
        public void checkOutputSpecs(FileSystem fs, JobConf jobconf)
            throws IOException {
            throw new IOException("This operation is not supported.");

        }

        /*
         * @see
         * org.apache.hadoop.mapred.OutputFormat#getRecordWriter(org.apache.
         * hadoop .fs.FileSystem, org.apache.hadoop.mapred.JobConf,
         * java.lang.String, org.apache.hadoop.util.Progressable)
         */
        @Override
        public RecordWriter<WritableComparable<?>, HCatRecord> getRecordWriter(
            FileSystem fs, JobConf jobconf, String str,
            Progressable progress) throws IOException {
            throw new IOException("This operation is not supported.");
        }

        /*
         * @see
         * org.apache.hadoop.hive.ql.io.HiveOutputFormat#getHiveRecordWriter(org
         * .apache.hadoop.mapred.JobConf, org.apache.hadoop.fs.Path,
         * java.lang.Class, boolean, java.util.Properties,
         * org.apache.hadoop.util.Progressable)
         */
        @Override
        public org.apache.hadoop.hive.ql.exec.FileSinkOperator.RecordWriter getHiveRecordWriter(
            JobConf jc, Path finalOutPath,
            Class<? extends Writable> valueClass, boolean isCompressed,
            Properties tableProperties, Progressable progress)
            throws IOException {
            throw new IOException("This operation is not supported.");
        }

    }

}