#!/usr/local/bin/thrift -java
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// 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.
#
# Thrift Service that the MetaStore is built on
#

include "fb303.thrift"

namespace java org.apache.hadoop.hive.metastore.api
namespace php metastore
namespace cpp Apache.Hadoop.Hive

const string DDL_TIME = "transient_lastDdlTime"

struct Version {
  1: string version,
  2: string comments
}

struct FieldSchema {
  1: string name, // name of the field
  2: string type, // type of the field. primitive types defined above, specify list<TYPE_NAME>, map<TYPE_NAME, TYPE_NAME> for lists & maps
  3: string comment
}

struct Type {
  1: string          name,             // one of the types in PrimitiveTypes or CollectionTypes or User defined types
  2: optional string type1,            // object type if the name is 'list' (LIST_TYPE), key type if the name is 'map' (MAP_TYPE)
  3: optional string type2,            // val type if the name is 'map' (MAP_TYPE)
  4: optional list<FieldSchema> fields // if the name is one of the user defined types
}

enum HiveObjectType {
  GLOBAL = 1,
  DATABASE = 2,
  TABLE = 3,
  PARTITION = 4,
  COLUMN = 5,
}

enum PrincipalType {
  USER = 1,
  ROLE = 2,
  GROUP = 3,
}

struct HiveObjectRef{
  1: HiveObjectType objectType,
  2: string dbName,
  3: string objectName,
  4: list<string> partValues,
  5: string columnName,
}

struct PrivilegeGrantInfo {
  1: string privilege,
  2: i32 createTime,
  3: string grantor,
  4: PrincipalType grantorType,
  5: bool grantOption,
}

struct HiveObjectPrivilege {
  1: HiveObjectRef  hiveObject,
  2: string principalName,
  3: PrincipalType principalType,
  4: PrivilegeGrantInfo grantInfo,
}

struct PrivilegeBag {
  1: list<HiveObjectPrivilege> privileges,
}

struct PrincipalPrivilegeSet {
  1: map<string, list<PrivilegeGrantInfo>> userPrivileges, // user name -> privilege grant info
  2: map<string, list<PrivilegeGrantInfo>> groupPrivileges, // group name -> privilege grant info
  3: map<string, list<PrivilegeGrantInfo>> rolePrivileges, //role name -> privilege grant info
}

struct Role {
  1: string roleName,
  2: i32 createTime,
  3: string ownerName,
}

// namespace for tables
struct Database {
  1: string name,
  2: string description,
  3: string locationUri,
  4: map<string, string> parameters, // properties associated with the database
  5: optional PrincipalPrivilegeSet privileges
}

// This object holds the information needed by SerDes
struct SerDeInfo {
  1: string name,                   // name of the serde, table name by default
  2: string serializationLib,       // usually the class that implements the extractor & loader
  3: map<string, string> parameters // initialization parameters
}

// sort order of a column (column name along with asc(1)/desc(0))
struct Order {
  1: string col,  // sort column name
  2: i32    order // asc(1) or desc(0)
}

// this object holds all the information about physical storage of the data belonging to a table
struct StorageDescriptor {
  1: list<FieldSchema> cols,  // required (refer to types defined above)
  2: string location,         // defaults to <warehouse loc>/<db loc>/tablename
  3: string inputFormat,      // SequenceFileInputFormat (binary) or TextInputFormat`  or custom format
  4: string outputFormat,     // SequenceFileOutputFormat (binary) or IgnoreKeyTextOutputFormat or custom format
  5: bool   compressed,       // compressed or not
  6: i32    numBuckets,       // this must be specified if there are any dimension columns
  7: SerDeInfo    serdeInfo,  // serialization and deserialization information
  8: list<string> bucketCols, // reducer grouping columns and clustering columns and bucketing columns`
  9: list<Order>  sortCols,   // sort order of the data in each bucket
  10: map<string, string> parameters // any user supplied key value hash
}

// table information
struct Table {
  1: string tableName,                // name of the table
  2: string dbName,                   // database name ('default')
  3: string owner,                    // owner of this table
  4: i32    createTime,               // creation time of the table
  5: i32    lastAccessTime,           // last access time (usually this will be filled from HDFS and shouldn't be relied on)
  6: i32    retention,                // retention time
  7: StorageDescriptor sd,            // storage descriptor of the table
  8: list<FieldSchema> partitionKeys, // partition keys of the table. only primitive types are supported
  9: map<string, string> parameters,   // to store comments or any other user level parameters
  10: string viewOriginalText,         // original view text, null for non-view
  11: string viewExpandedText,         // expanded view text, null for non-view
  12: string tableType,                 // table type enum, e.g. EXTERNAL_TABLE
  13: optional PrincipalPrivilegeSet privileges,
}

struct Partition {
  1: list<string> values // string value is converted to appropriate partition key type
  2: string       dbName,
  3: string       tableName,
  4: i32          createTime,
  5: i32          lastAccessTime,
  6: StorageDescriptor   sd,
  7: map<string, string> parameters,
  8: optional PrincipalPrivilegeSet privileges
}

struct Index {
  1: string       indexName, // unique with in the whole database namespace
  2: string       indexHandlerClass, // reserved
  3: string       dbName,
  4: string       origTableName,
  5: i32          createTime,
  6: i32          lastAccessTime,
  7: string       indexTableName,
  8: StorageDescriptor   sd,
  9: map<string, string> parameters,
  10: bool         deferredRebuild
}

// schema of the table/query results etc.
struct Schema {
 // column names, types, comments
 1: list<FieldSchema> fieldSchemas,  // delimiters etc
 2: map<string, string> properties
}

exception MetaException {
  1: string message
}

exception UnknownTableException {
  1: string message
}

exception UnknownDBException {
  1: string message
}

exception AlreadyExistsException {
  1: string message
}

exception InvalidObjectException {
  1: string message
}

exception NoSuchObjectException {
  1: string message
}

exception IndexAlreadyExistsException {
  1: string message
}

exception InvalidOperationException {
  1: string message
}

exception ConfigValSecurityException {
  1: string message
}

/**
* This interface is live.
*/
service ThriftHiveMetastore extends fb303.FacebookService
{
  void create_database(1:Database database) throws(1:AlreadyExistsException o1, 2:InvalidObjectException o2, 3:MetaException o3)
  Database get_database(1:string name) throws(1:NoSuchObjectException o1, 2:MetaException o2)
  void drop_database(1:string name, 2:bool deleteData) throws(1:NoSuchObjectException o1, 2:InvalidOperationException o2, 3:MetaException o3)
  list<string> get_databases(1:string pattern) throws(1:MetaException o1)
  list<string> get_all_databases() throws(1:MetaException o1)
  void alter_database(1:string dbname, 2:Database db) throws(1:MetaException o1, 2:NoSuchObjectException o2)
  
  // returns the type with given name (make seperate calls for the dependent types if needed)
  Type get_type(1:string name)  throws(1:MetaException o1, 2:NoSuchObjectException o2)
  bool create_type(1:Type type) throws(1:AlreadyExistsException o1, 2:InvalidObjectException o2, 3:MetaException o3)
  bool drop_type(1:string type) throws(1:MetaException o1, 2:NoSuchObjectException o2)
  map<string, Type> get_type_all(1:string name)
                                throws(1:MetaException o2)

  // Gets a list of FieldSchemas describing the columns of a particular table
  list<FieldSchema> get_fields(1: string db_name, 2: string table_name) throws (1: MetaException o1, 2: UnknownTableException o2, 3: UnknownDBException o3),

  // Gets a list of FieldSchemas describing both the columns and the partition keys of a particular table
  list<FieldSchema> get_schema(1: string db_name, 2: string table_name) throws (1: MetaException o1, 2: UnknownTableException o2, 3: UnknownDBException o3)

  // create a Hive table. Following fields must be set
  // tableName
  // database        (only 'default' for now until Hive QL supports databases)
  // owner           (not needed, but good to have for tracking purposes)
  // sd.cols         (list of field schemas)
  // sd.inputFormat  (SequenceFileInputFormat (binary like falcon tables or u_full) or TextInputFormat)
  // sd.outputFormat (SequenceFileInputFormat (binary) or TextInputFormat)
  // sd.serdeInfo.serializationLib (SerDe class name eg org.apache.hadoop.hive.serde.simple_meta.MetadataTypedColumnsetSerDe
  // * See notes on DDL_TIME
  void create_table(1:Table tbl) throws(1:AlreadyExistsException o1, 2:InvalidObjectException o2, 3:MetaException o3, 4:NoSuchObjectException o4)
  // drops the table and all the partitions associated with it if the table has partitions
  // delete data (including partitions) if deleteData is set to true
  void drop_table(1:string dbname, 2:string name, 3:bool deleteData)
                       throws(1:NoSuchObjectException o1, 2:MetaException o3)
  list<string> get_tables(1: string db_name, 2: string pattern) throws (1: MetaException o1)
  list<string> get_all_tables(1: string db_name) throws (1: MetaException o1)

  Table get_table(1:string dbname, 2:string tbl_name)
                       throws (1:MetaException o1, 2:NoSuchObjectException o2)
  // alter table applies to only future partitions not for existing partitions
  // * See notes on DDL_TIME
  void alter_table(1:string dbname, 2:string tbl_name, 3:Table new_tbl)
                       throws (1:InvalidOperationException o1, 2:MetaException o2)

  // the following applies to only tables that have partitions
  // * See notes on DDL_TIME
  Partition add_partition(1:Partition new_part)
                       throws(1:InvalidObjectException o1, 2:AlreadyExistsException o2, 3:MetaException o3)
  Partition append_partition(1:string db_name, 2:string tbl_name, 3:list<string> part_vals)
                       throws (1:InvalidObjectException o1, 2:AlreadyExistsException o2, 3:MetaException o3)
  Partition append_partition_by_name(1:string db_name, 2:string tbl_name, 3:string part_name)
                       throws (1:InvalidObjectException o1, 2:AlreadyExistsException o2, 3:MetaException o3)
  bool drop_partition(1:string db_name, 2:string tbl_name, 3:list<string> part_vals, 4:bool deleteData)
                       throws(1:NoSuchObjectException o1, 2:MetaException o2)
  bool drop_partition_by_name(1:string db_name, 2:string tbl_name, 3:string part_name, 4:bool deleteData)
                       throws(1:NoSuchObjectException o1, 2:MetaException o2) 
  Partition get_partition(1:string db_name, 2:string tbl_name, 3:list<string> part_vals)
                       throws(1:MetaException o1, 2:NoSuchObjectException o2)

  Partition get_partition_with_auth(1:string db_name, 2:string tbl_name, 3:list<string> part_vals, 
      4: string user_name, 5: list<string> group_names) throws(1:MetaException o1, 2:NoSuchObjectException o2)

  Partition get_partition_by_name(1:string db_name 2:string tbl_name, 3:string part_name)
                       throws(1:MetaException o1, 2:NoSuchObjectException o2)

  // returns all the partitions for this table in reverse chronological order.
  // If max parts is given then it will return only that many.
  list<Partition> get_partitions(1:string db_name, 2:string tbl_name, 3:i16 max_parts=-1)
                       throws(1:NoSuchObjectException o1, 2:MetaException o2)
  list<Partition> get_partitions_with_auth(1:string db_name, 2:string tbl_name, 3:i16 max_parts=-1, 
     4: string user_name, 5: list<string> group_names) throws(1:NoSuchObjectException o1, 2:MetaException o2)                       

  list<string> get_partition_names(1:string db_name, 2:string tbl_name, 3:i16 max_parts=-1)
                       throws(1:MetaException o2)
                       
  // get_partition*_ps methods allow filtering by a partial partition specification, 
  // as needed for dynamic partitions. The values that are not restricted should 
  // be empty strings. Nulls were considered (instead of "") but caused errors in 
  // generated Python code. The size of part_vals may be smaller than the
  // number of partition columns - the unspecified values are considered the same
  // as "".
  list<Partition> get_partitions_ps(1:string db_name 2:string tbl_name 
  	3:list<string> part_vals, 4:i16 max_parts=-1)
                       throws(1:MetaException o1)
  list<Partition> get_partitions_ps_with_auth(1:string db_name, 2:string tbl_name, 3:list<string> part_vals, 4:i16 max_parts=-1, 
     5: string user_name, 6: list<string> group_names) throws(1:NoSuchObjectException o1, 2:MetaException o2)                       
  
  list<string> get_partition_names_ps(1:string db_name, 
  	2:string tbl_name, 3:list<string> part_vals, 4:i16 max_parts=-1)
  	                   throws(1:MetaException o1)

  // get the partitions matching the given partition filter
  list<Partition> get_partitions_by_filter(1:string db_name 2:string tbl_name
    3:string filter, 4:i16 max_parts=-1)
                       throws(1:MetaException o1, 2:NoSuchObjectException o2)

  // changes the partition to the new partition object. partition is identified from the part values
  // in the new_part
  // * See notes on DDL_TIME
  void alter_partition(1:string db_name, 2:string tbl_name, 3:Partition new_part)
                       throws(1:InvalidOperationException o1, 2:MetaException o2)

  // gets the value of the configuration key in the metastore server. returns
  // defaultValue if the key does not exist. if the configuration key does not
  // begin with "hive", "mapred", or "hdfs", a ConfigValSecurityException is
  // thrown.
  string get_config_value(1:string name, 2:string defaultValue)
                          throws(1:ConfigValSecurityException o1)
                          
  // converts a partition name into a partition values array
  list<string> partition_name_to_vals(1: string part_name)
                          throws(1: MetaException o1)
  // converts a partition name into a partition specification (a mapping from
  // the partition cols to the values)
  map<string, string> partition_name_to_spec(1: string part_name)
                          throws(1: MetaException o1)
  
  //index
  Index add_index(1:Index new_index, 2: Table index_table)
                       throws(1:InvalidObjectException o1, 2:AlreadyExistsException o2, 3:MetaException o3)
  void alter_index(1:string dbname, 2:string base_tbl_name, 3:string idx_name, 4:Index new_idx)
                       throws (1:InvalidOperationException o1, 2:MetaException o2)
  bool drop_index_by_name(1:string db_name, 2:string tbl_name, 3:string index_name, 4:bool deleteData)
                       throws(1:NoSuchObjectException o1, 2:MetaException o2) 
  Index get_index_by_name(1:string db_name 2:string tbl_name, 3:string index_name)
                       throws(1:MetaException o1, 2:NoSuchObjectException o2)

  list<Index> get_indexes(1:string db_name, 2:string tbl_name, 3:i16 max_indexes=-1)
                       throws(1:NoSuchObjectException o1, 2:MetaException o2)
  list<string> get_index_names(1:string db_name, 2:string tbl_name, 3:i16 max_indexes=-1)
                       throws(1:MetaException o2)

  //authorization privileges
                       
  bool create_role(1:Role role) throws(1:MetaException o1)
  bool drop_role(1:string role_name) throws(1:MetaException o1)
  list<string> get_role_names() throws(1:MetaException o1)
  bool grant_role(1:string role_name, 2:string principal_name, 3:PrincipalType principal_type, 
    4:string grantor, 5:PrincipalType grantorType, 6:bool grant_option) throws(1:MetaException o1)
  bool revoke_role(1:string role_name, 2:string principal_name, 3:PrincipalType principal_type) 
                        throws(1:MetaException o1)
  list<Role> list_roles(1:string principal_name, 2:PrincipalType principal_type) throws(1:MetaException o1)

  PrincipalPrivilegeSet get_privilege_set(1:HiveObjectRef hiveObject, 2:string user_name, 
    3: list<string> group_names) throws(1:MetaException o1)
  list<HiveObjectPrivilege> list_privileges(1:string principal_name, 2:PrincipalType principal_type, 
    3: HiveObjectRef hiveObject) throws(1:MetaException o1)
  
  bool grant_privileges(1:PrivilegeBag privileges) throws(1:MetaException o1)
  bool revoke_privileges(1:PrivilegeBag privileges) throws(1:MetaException o1)
  
  //Authentication (delegation token) interfaces
  
  // get metastore server delegation token for use from the map/reduce tasks to authenticate
  // to metastore server
  string get_delegation_token(1:string renewer_kerberos_principal_name) throws (1:MetaException o1)

  // get metastore server delegation token for use from the map/reduce tasks to authenticate
  // to metastore server - this method takes an extra token signature string which is just
  // an identifier to associate with the token - this will be used by the token selector code
  // to pick the right token given the associated identifier.
  string get_delegation_token_with_signature(1:string renewer_kerberos_principal_name, 
    2:string token_signature) throws (1:MetaException o1)

  // method to renew delegation token obtained from metastore server
  i64 renew_delegation_token(1:string token_str_form) throws (1:MetaException o1)

  // method to cancel delegation token obtained from metastore server
  void cancel_delegation_token(1:string token_str_form) throws (1:MetaException o1)
}

// * Note about the DDL_TIME: When creating or altering a table or a partition,
// if the DDL_TIME is not set, the current time will be used.

// For storing info about archived partitions in parameters

// Whether the partition is archived
const string IS_ARCHIVED = "is_archived",
// The original location of the partition, before archiving. After archiving,
// this directory will contain the archive. When the partition
// is dropped, this directory will be deleted
const string ORIGINAL_LOCATION = "original_location",

// these should be needed only for backward compatibility with filestore
const string META_TABLE_COLUMNS   = "columns",
const string META_TABLE_COLUMN_TYPES   = "columns.types",
const string BUCKET_FIELD_NAME    = "bucket_field_name",
const string BUCKET_COUNT         = "bucket_count",
const string FIELD_TO_DIMENSION   = "field_to_dimension",
const string META_TABLE_NAME      = "name",
const string META_TABLE_DB        = "db",
const string META_TABLE_LOCATION  = "location",
const string META_TABLE_SERDE     = "serde",
const string META_TABLE_PARTITION_COLUMNS = "partition_columns",
const string FILE_INPUT_FORMAT    = "file.inputformat",
const string FILE_OUTPUT_FORMAT   = "file.outputformat",
const string META_TABLE_STORAGE   = "storage_handler",



