/*
 * 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.
 */

// ----------------------------------------------------------------
// Hbase.thrift
//
// This is a Thrift interface definition file for the Hbase service.
// Target language libraries for C++, Java, Ruby, PHP, (and more) are
// generated by running this file through the Thrift compiler with the
// appropriate flags. The Thrift compiler binary and runtime
// libraries for various languages are available
// from the Apache Incubator (http://incubator.apache.org/thrift/)
//
// See the package.html file for information on the version of Thrift
// used to generate the *.java files checked into the Hbase project.
// ----------------------------------------------------------------

namespace java org.apache.hadoop.hbase.thrift.generated
namespace cpp  apache.hadoop.hbase.thrift
namespace rb Apache.Hadoop.Hbase.Thrift
namespace py hbase
namespace perl Hbase

//
// Types
//

// NOTE: all variables with the Text type are assumed to be correctly
// formatted UTF-8 strings.  This is a programming language and locale
// dependent property that the client application is repsonsible for
// maintaining.  If strings with an invalid encoding are sent, an
// IOError will be thrown.

typedef binary Text
typedef binary Bytes
typedef i32    ScannerID

/**
 * TCell - Used to transport a cell value (byte[]) and the timestamp it was 
 * stored with together as a result for get and getRow methods. This promotes
 * the timestamp of a cell to a first-class value, making it easy to take 
 * note of temporal data. Cell is used all the way from HStore up to HTable.
 */
struct TCell{
  1:Bytes value,
  2:i64 timestamp
}

/**
 * An HColumnDescriptor contains information about a column family
 * such as the number of versions, compression settings, etc. It is
 * used as input when creating a table or adding a column.
 */
struct ColumnDescriptor {
  1:Text name,
  2:i32 maxVersions = 3,
  3:string compression = "NONE",
  4:bool inMemory = 0,
  5:string bloomFilterType = "NONE",
  6:i32 bloomFilterVectorSize = 0,
  7:i32 bloomFilterNbHashes = 0,
  8:bool blockCacheEnabled = 0,
  9:i32 timeToLive = -1
}

/**
 * A TRegionInfo contains information about an HTable region.
 */
struct TRegionInfo {
  1:Text startKey,
  2:Text endKey,
  3:i64 id,
  4:Text name,
  5:byte version 
}

/**
 * A Mutation object is used to either update or delete a column-value.
 */
struct Mutation {
  1:bool isDelete = 0,
  2:Text column,
  3:Text value
}


/**
 * A BatchMutation object is used to apply a number of Mutations to a single row.
 */
struct BatchMutation {
  1:Text row,
  2:list<Mutation> mutations
}


/**
 * Holds row name and then a map of columns to cells. 
 */
struct TRowResult {
  1:Text row,
  2:map<Text, TCell> columns
}

/**
 * A Scan object is used to specify scanner parameters when opening a scanner.
 */
struct TScan {
  1:optional Text startRow,
  2:optional Text stopRow,
  3:optional i64 timestamp,
  4:optional list<Text> columns,
  5:optional i32 caching,
  6:optional Text filterString
}

//
// Exceptions
//
/**
 * An IOError exception signals that an error occurred communicating
 * to the Hbase master or an Hbase region server.  Also used to return
 * more general Hbase error conditions.
 */
exception IOError {
  1:string message
}

/**
 * An IllegalArgument exception indicates an illegal or invalid
 * argument was passed into a procedure.
 */
exception IllegalArgument {
  1:string message
}

/**
 * An AlreadyExists exceptions signals that a table with the specified
 * name already exists
 */
exception AlreadyExists {
  1:string message
}

//
// Service 
//

service Hbase {
  /**
   * Brings a table on-line (enables it)
   */
  void enableTable(
    /** name of the table */
    1:Bytes tableName
  ) throws (1:IOError io)
    
  /**
   * Disables a table (takes it off-line) If it is being served, the master
   * will tell the servers to stop serving it.
   */
  void disableTable(
    /** name of the table */
    1:Bytes tableName
  ) throws (1:IOError io)

  /**
   * @return true if table is on-line
   */
  bool isTableEnabled(
    /** name of the table to check */
    1:Bytes tableName
  ) throws (1:IOError io)
    
  void compact(1:Bytes tableNameOrRegionName)
    throws (1:IOError io)
  
  void majorCompact(1:Bytes tableNameOrRegionName)
    throws (1:IOError io)
    
  /**
   * List all the userspace tables.
   *
   * @return returns a list of names
   */
  list<Text> getTableNames()
    throws (1:IOError io)

  /**
   * List all the column families assoicated with a table.
   *
   * @return list of column family descriptors
   */
  map<Text,ColumnDescriptor> getColumnDescriptors (
    /** table name */
    1:Text tableName
  ) throws (1:IOError io)

  /**
   * List the regions associated with a table.
   *
   * @return list of region descriptors
   */
  list<TRegionInfo> getTableRegions(
    /** table name */
    1:Text tableName)
    throws (1:IOError io)

  /**
   * Create a table with the specified column families.  The name
   * field for each ColumnDescriptor must be set and must end in a
   * colon (:). All other fields are optional and will get default
   * values if not explicitly specified.
   *
   * @throws IllegalArgument if an input parameter is invalid
   *
   * @throws AlreadyExists if the table name already exists
   */
  void createTable(
    /** name of table to create */
    1:Text tableName,

    /** list of column family descriptors */
    2:list<ColumnDescriptor> columnFamilies
  ) throws (1:IOError io, 2:IllegalArgument ia, 3:AlreadyExists exist)

  /**
   * Deletes a table
   *
   * @throws IOError if table doesn't exist on server or there was some other
   * problem
   */
  void deleteTable(
    /** name of table to delete */
    1:Text tableName
  ) throws (1:IOError io)

  /** 
   * Get a single TCell for the specified table, row, and column at the
   * latest timestamp. Returns an empty list if no such value exists.
   *
   * @return value for specified row/column
   */
  list<TCell> get(
    /** name of table */
    1:Text tableName,

    /** row key */
    2:Text row,

    /** column name */
    3:Text column
  ) throws (1:IOError io)

  /** 
   * Get the specified number of versions for the specified table,
   * row, and column.
   *
   * @return list of cells for specified row/column
   */
  list<TCell> getVer(
    /** name of table */
    1:Text tableName,

    /** row key */
    2:Text row,

    /** column name */
    3:Text column,

    /** number of versions to retrieve */
    4:i32 numVersions
  ) throws (1:IOError io)

  /** 
   * Get the specified number of versions for the specified table,
   * row, and column.  Only versions less than or equal to the specified
   * timestamp will be returned.
   *
   * @return list of cells for specified row/column
   */
  list<TCell> getVerTs(
    /** name of table */
    1:Text tableName,

    /** row key */
    2:Text row,

    /** column name */
    3:Text column,

    /** timestamp */
    4:i64 timestamp,

    /** number of versions to retrieve */
    5:i32 numVersions
  ) throws (1:IOError io)

  /** 
   * Get all the data for the specified table and row at the latest
   * timestamp. Returns an empty list if the row does not exist.
   * 
   * @return TRowResult containing the row and map of columns to TCells
   */
  list<TRowResult> getRow(
    /** name of table */
    1:Text tableName,

    /** row key */
    2:Text row
  ) throws (1:IOError io)

  /** 
   * Get the specified columns for the specified table and row at the latest
   * timestamp. Returns an empty list if the row does not exist.
   * 
   * @return TRowResult containing the row and map of columns to TCells
   */
  list<TRowResult> getRowWithColumns(
    /** name of table */
    1:Text tableName,

    /** row key */
    2:Text row,

    /** List of columns to return, null for all columns */
    3:list<Text> columns
  ) throws (1:IOError io)

  /** 
   * Get all the data for the specified table and row at the specified
   * timestamp. Returns an empty list if the row does not exist.
   * 
   * @return TRowResult containing the row and map of columns to TCells
   */
  list<TRowResult> getRowTs(
    /** name of the table */
    1:Text tableName,

    /** row key */
    2:Text row,

    /** timestamp */
    3:i64 timestamp
  ) throws (1:IOError io)
    
  /** 
   * Get the specified columns for the specified table and row at the specified
   * timestamp. Returns an empty list if the row does not exist.
   * 
   * @return TRowResult containing the row and map of columns to TCells
   */
  list<TRowResult> getRowWithColumnsTs(
    /** name of table */
    1:Text tableName,

    /** row key */
    2:Text row,

    /** List of columns to return, null for all columns */
    3:list<Text> columns,
    4:i64 timestamp
  ) throws (1:IOError io)

  /**
   * Get all the data for the specified table and rows at the latest
   * timestamp. Returns an empty list if no rows exist.
   *
   * @return TRowResult containing the rows and map of columns to TCells
   */
  list<TRowResult> getRows(
    /** name of table */
    1:Text tableName,

    /** row keys */
    2:list<Text> rows
  ) throws (1:IOError io)

  /**
   * Get the specified columns for the specified table and rows at the latest
   * timestamp. Returns an empty list if no rows exist.
   *
   * @return TRowResult containing the rows and map of columns to TCells
   */
  list<TRowResult> getRowsWithColumns(
    /** name of table */
    1:Text tableName,

    /** row keys */
    2:list<Text> rows

    /** List of columns to return, null for all columns */
    3:list<Text> columns
  ) throws (1:IOError io)

  /**
   * Get all the data for the specified table and rows at the specified
   * timestamp. Returns an empty list if no rows exist.
   *
   * @return TRowResult containing the rows and map of columns to TCells
   */
  list<TRowResult> getRowsTs(
    /** name of the table */
    1:Text tableName,

    /** row keys */
    2:list<Text> rows

    /** timestamp */
    3:i64 timestamp
  ) throws (1:IOError io)

  /**
   * Get the specified columns for the specified table and rows at the specified
   * timestamp. Returns an empty list if no rows exist.
   *
   * @return TRowResult containing the rows and map of columns to TCells
   */
  list<TRowResult> getRowsWithColumnsTs(
    /** name of table */
    1:Text tableName,

    /** row keys */
    2:list<Text> rows

    /** List of columns to return, null for all columns */
    3:list<Text> columns,
    4:i64 timestamp
  ) throws (1:IOError io)

  /** 
   * Apply a series of mutations (updates/deletes) to a row in a
   * single transaction.  If an exception is thrown, then the
   * transaction is aborted.  Default current timestamp is used, and
   * all entries will have an identical timestamp.
   */
  void mutateRow(
    /** name of table */
    1:Text tableName,

    /** row key */
    2:Text row,

    /** list of mutation commands */
    3:list<Mutation> mutations
  ) throws (1:IOError io, 2:IllegalArgument ia)

  /** 
   * Apply a series of mutations (updates/deletes) to a row in a
   * single transaction.  If an exception is thrown, then the
   * transaction is aborted.  The specified timestamp is used, and
   * all entries will have an identical timestamp.
   */
  void mutateRowTs(
    /** name of table */
    1:Text tableName,

    /** row key */
    2:Text row,

    /** list of mutation commands */
    3:list<Mutation> mutations,

    /** timestamp */
    4:i64 timestamp
  ) throws (1:IOError io, 2:IllegalArgument ia)

  /** 
   * Apply a series of batches (each a series of mutations on a single row)
   * in a single transaction.  If an exception is thrown, then the
   * transaction is aborted.  Default current timestamp is used, and
   * all entries will have an identical timestamp.
   */
  void mutateRows(
    /** name of table */
    1:Text tableName,

    /** list of row batches */
    2:list<BatchMutation> rowBatches
  ) throws (1:IOError io, 2:IllegalArgument ia)

  /** 
   * Apply a series of batches (each a series of mutations on a single row)
   * in a single transaction.  If an exception is thrown, then the
   * transaction is aborted.  The specified timestamp is used, and
   * all entries will have an identical timestamp.
   */
  void mutateRowsTs(
    /** name of table */
    1:Text tableName,

    /** list of row batches */
    2:list<BatchMutation> rowBatches,

    /** timestamp */
    3:i64 timestamp
  ) throws (1:IOError io, 2:IllegalArgument ia)

  /**
   * Atomically increment the column value specified.  Returns the next value post increment.
   */
  i64 atomicIncrement(
    /** name of table */
    1:Text tableName,

    /** row to increment */
    2:Text row,

    /** name of column */
    3:Text column,

    /** amount to increment by */
    4:i64 value
  ) throws (1:IOError io, 2:IllegalArgument ia)
    
  /** 
   * Delete all cells that match the passed row and column.
   */
  void deleteAll(
    /** name of table */
    1:Text tableName,

    /** Row to update */
    2:Text row,

    /** name of column whose value is to be deleted */
    3:Text column
  ) throws (1:IOError io)

  /** 
   * Delete all cells that match the passed row and column and whose
   * timestamp is equal-to or older than the passed timestamp.
   */
  void deleteAllTs(
    /** name of table */
    1:Text tableName,

    /** Row to update */
    2:Text row,

    /** name of column whose value is to be deleted */
    3:Text column,

    /** timestamp */
    4:i64 timestamp
  ) throws (1:IOError io)

  /**
   * Completely delete the row's cells.
   */
  void deleteAllRow(
    /** name of table */
    1:Text tableName,

    /** key of the row to be completely deleted. */
    2:Text row
  ) throws (1:IOError io)

  /**
   * Completely delete the row's cells marked with a timestamp
   * equal-to or older than the passed timestamp.
   */
  void deleteAllRowTs(
    /** name of table */
    1:Text tableName,

    /** key of the row to be completely deleted. */
    2:Text row,

    /** timestamp */
    3:i64 timestamp
  ) throws (1:IOError io)

  /**
   * Get a scanner on the current table, using the Scan instance
   * for the scan parameters.
   */
  ScannerID scannerOpenWithScan(
    /** name of table */
    1:Text tableName,

    /** Scan instance */
    2:TScan scan
  ) throws (1:IOError io)

  /** 
   * Get a scanner on the current table starting at the specified row and
   * ending at the last row in the table.  Return the specified columns.
   *
   * @return scanner id to be used with other scanner procedures
   */
  ScannerID scannerOpen(
    /** name of table */
    1:Text tableName,

    /**
     * Starting row in table to scan.
     * Send "" (empty string) to start at the first row.
     */
    2:Text startRow,

    /**
     * columns to scan. If column name is a column family, all
     * columns of the specified column family are returned. It's also possible
     * to pass a regex in the column qualifier.
     */
    3:list<Text> columns
  ) throws (1:IOError io)

  /** 
   * Get a scanner on the current table starting and stopping at the
   * specified rows.  ending at the last row in the table.  Return the
   * specified columns.
   *
   * @return scanner id to be used with other scanner procedures
   */
  ScannerID scannerOpenWithStop(
    /** name of table */
    1:Text tableName,

    /**
     * Starting row in table to scan.
     * Send "" (empty string) to start at the first row.
     */
    2:Text startRow,

    /**
     * row to stop scanning on. This row is *not* included in the
     * scanner's results
     */
    3:Text stopRow,

    /**
     * columns to scan. If column name is a column family, all
     * columns of the specified column family are returned. It's also possible
     * to pass a regex in the column qualifier.
     */
    4:list<Text> columns
  ) throws (1:IOError io)

  /**
   * Open a scanner for a given prefix.  That is all rows will have the specified
   * prefix. No other rows will be returned.
   *
   * @return scanner id to use with other scanner calls
   */
  ScannerID scannerOpenWithPrefix(
    /** name of table */
    1:Text tableName,

    /** the prefix (and thus start row) of the keys you want */
    2:Text startAndPrefix,

    /** the columns you want returned */
    3:list<Text> columns
  ) throws (1:IOError io)

  /** 
   * Get a scanner on the current table starting at the specified row and
   * ending at the last row in the table.  Return the specified columns.
   * Only values with the specified timestamp are returned.
   *
   * @return scanner id to be used with other scanner procedures
   */
  ScannerID scannerOpenTs(
    /** name of table */
    1:Text tableName,

    /**
     * Starting row in table to scan.
     * Send "" (empty string) to start at the first row.
     */
    2:Text startRow,

    /**
     * columns to scan. If column name is a column family, all
     * columns of the specified column family are returned. It's also possible
     * to pass a regex in the column qualifier.
     */
    3:list<Text> columns,

    /** timestamp */
    4:i64 timestamp
  ) throws (1:IOError io)

  /** 
   * Get a scanner on the current table starting and stopping at the
   * specified rows.  ending at the last row in the table.  Return the
   * specified columns.  Only values with the specified timestamp are
   * returned.
   *
   * @return scanner id to be used with other scanner procedures
   */
  ScannerID scannerOpenWithStopTs(
    /** name of table */
    1:Text tableName,

    /**
     * Starting row in table to scan.
     * Send "" (empty string) to start at the first row.
     */
    2:Text startRow,

    /**
     * row to stop scanning on. This row is *not* included in the
     * scanner's results
     */
    3:Text stopRow,

    /**
     * columns to scan. If column name is a column family, all
     * columns of the specified column family are returned. It's also possible
     * to pass a regex in the column qualifier.
     */
    4:list<Text> columns,

    /** timestamp */
    5:i64 timestamp
  ) throws (1:IOError io)

  /**
   * Returns the scanner's current row value and advances to the next
   * row in the table.  When there are no more rows in the table, or a key
   * greater-than-or-equal-to the scanner's specified stopRow is reached,
   * an empty list is returned.
   *
   * @return a TRowResult containing the current row and a map of the columns to TCells.
   *
   * @throws IllegalArgument if ScannerID is invalid
   *
   * @throws NotFound when the scanner reaches the end
   */
  list<TRowResult> scannerGet(
    /** id of a scanner returned by scannerOpen */
    1:ScannerID id
  ) throws (1:IOError io, 2:IllegalArgument ia)

  /**
   * Returns, starting at the scanner's current row value nbRows worth of
   * rows and advances to the next row in the table.  When there are no more 
   * rows in the table, or a key greater-than-or-equal-to the scanner's 
   * specified stopRow is reached,  an empty list is returned.
   *
   * @return a TRowResult containing the current row and a map of the columns to TCells.
   *
   * @throws IllegalArgument if ScannerID is invalid
   *
   * @throws NotFound when the scanner reaches the end
   */
  list<TRowResult> scannerGetList(
    /** id of a scanner returned by scannerOpen */
    1:ScannerID id,

    /** number of results to return */
    2:i32 nbRows
  ) throws (1:IOError io, 2:IllegalArgument ia)

  /**
   * Closes the server-state associated with an open scanner.
   *
   * @throws IllegalArgument if ScannerID is invalid
   */
  void scannerClose(
    /** id of a scanner returned by scannerOpen */
    1:ScannerID id
  ) throws (1:IOError io, 2:IllegalArgument ia)
}