file cassandra.h

C/C++ driver for Apache Cassandra. Uses the Cassandra Query Language versions 3 over the Cassandra Binary Protocol (versions 1 or 2).

Macros

CASS_VERSION_MAJOR

= 2

CASS_VERSION_MINOR

= 1

CASS_VERSION_PATCH

= 0

CASS_VERSION_SUFFIX

= ""

CASS_INET_V4_LENGTH

= 4

The size of an IPv4 address

CASS_INET_V6_LENGTH

= 16

The size of an IPv6 address

CASS_INET_STRING_LENGTH

= 46

The size of an inet string including a null terminator.

CASS_UUID_STRING_LENGTH

= 37

The size of a hexidecimal UUID string including a null terminator.

CASS_CONSISTENCY_MAP

= XX(CASS_CONSISTENCY_UNKNOWN, "UNKNOWN") \ XX(CASS_CONSISTENCY_ANY, "ANY") \ XX(CASS_CONSISTENCY_ONE, "ONE") \ XX(CASS_CONSISTENCY_TWO, "TWO") \ XX(CASS_CONSISTENCY_THREE, "THREE") \ XX(CASS_CONSISTENCY_QUORUM, "QUORUM") \ XX(CASS_CONSISTENCY_ALL, "ALL") \ XX(CASS_CONSISTENCY_LOCAL_QUORUM, "LOCAL_QUORUM") \ XX(CASS_CONSISTENCY_EACH_QUORUM, "EACH_QUORUM") \ XX(CASS_CONSISTENCY_SERIAL, "SERIAL") \ XX(CASS_CONSISTENCY_LOCAL_SERIAL, "LOCAL_SERIAL") \ XX(CASS_CONSISTENCY_LOCAL_ONE, "LOCAL_ONE")

CASS_WRITE_TYPE_MAP

= XX(CASS_WRITE_TYPE_SIMPLE, "SIMPLE") \ XX(CASS_WRITE_TYPE_BATCH, "BATCH") \ XX(CASS_WRITE_TYPE_UNLOGGED_BATCH, "UNLOGGED_BATCH") \ XX(CASS_WRITE_TYPE_COUNTER, "COUNTER") \ XX(CASS_WRITE_TYPE_BATCH_LOG, "BATCH_LOG") \ XX(CASS_WRITE_TYPE_CAS, "CAS")

CASS_LOG_MAX_MESSAGE_SIZE

= 256

Maximum size of a log message

Types

cass_float_t 

typedef float cass_float_t

cass_double_t 

typedef double cass_double_t

cass_int8_t 

typedef char cass_int8_t

cass_uint8_t 

typedef unsigned char cass_uint8_t

cass_int16_t 

typedef short cass_int16_t

cass_uint16_t 

typedef unsigned short cass_uint16_t

cass_int32_t 

typedef int cass_int32_t

cass_uint32_t 

typedef unsigned int cass_uint32_t

cass_int64_t 

typedef long long cass_int64_t

cass_uint64_t 

typedef unsigned long long cass_uint64_t

cass_byte_t 

typedef cass_uint8_t cass_byte_t

cass_duration_t 

typedef cass_uint64_t cass_duration_t

CassCluster 

typedef struct CassCluster_ CassCluster

CassSession 

typedef struct CassSession_ CassSession

CassStatement 

typedef struct CassStatement_ CassStatement

CassBatch 

typedef struct CassBatch_ CassBatch

CassFuture 

typedef struct CassFuture_ CassFuture

CassPrepared 

typedef struct CassPrepared_ CassPrepared

CassResult 

typedef struct CassResult_ CassResult

CassErrorResult 

typedef struct CassErrorResult_ CassErrorResult

CassIterator 

typedef struct CassIterator_ CassIterator

CassRow 

typedef struct CassRow_ CassRow

CassValue 

typedef struct CassValue_ CassValue

CassDataType 

typedef struct CassDataType_ CassDataType

CassCollection 

typedef struct CassCollection_ CassCollection

CassTuple 

typedef struct CassTuple_ CassTuple

CassUserType 

typedef struct CassUserType_ CassUserType

CassSsl 

typedef struct CassSsl_ CassSsl

CassSchema 

typedef struct CassSchema_ CassSchema

CassSchemaMeta 

typedef struct CassSchemaMeta_ CassSchemaMeta

CassSchemaMetaField 

typedef struct CassSchemaMetaField_ CassSchemaMetaField

CassUuidGen 

typedef struct CassUuidGen_ CassUuidGen

CassTimestampGen 

typedef struct CassTimestampGen_ CassTimestampGen

CassRetryPolicy 

typedef struct CassRetryPolicy_ CassRetryPolicy

CassFutureCallback 

typedef void(* CassFutureCallback) (CassFuture *future, void *data)

A callback that’s notified when the future is set.

See Also:

CassLogCallback 

typedef void(* CassLogCallback) (const CassLogMessage *message, void *data)

A callback that’s used to handle logging.

See Also:

Enums

cass_bool_t

cass_false = 0
cass_true = 1

CassConsistency

CASS_CONSISTENCY_UNKNOWN = 0xFFFF
CASS_CONSISTENCY_ANY = 0x0000
CASS_CONSISTENCY_ONE = 0x0001
CASS_CONSISTENCY_TWO = 0x0002
CASS_CONSISTENCY_THREE = 0x0003
CASS_CONSISTENCY_QUORUM = 0x0004
CASS_CONSISTENCY_ALL = 0x0005
CASS_CONSISTENCY_LOCAL_QUORUM = 0x0006
CASS_CONSISTENCY_EACH_QUORUM = 0x0007
CASS_CONSISTENCY_SERIAL = 0x0008
CASS_CONSISTENCY_LOCAL_SERIAL = 0x0009
CASS_CONSISTENCY_LOCAL_ONE = 0x000A

CassWriteType

CASS_WRITE_TYPE_UKNOWN
CASS_WRITE_TYPE_SIMPLE
CASS_WRITE_TYPE_BATCH
CASS_WRITE_TYPE_UNLOGGED_BATCH
CASS_WRITE_TYPE_COUNTER
CASS_WRITE_TYPE_BATCH_LOG
CASS_WRITE_TYPE_CAS

CassValueType

CASS_VALUE_TYPE_UNKNOWN = 0xFFFF
CASS_VALUE_TYPE_CUSTOM = 0x0000
CASS_VALUE_TYPE_ASCII = 0x0001
CASS_VALUE_TYPE_BIGINT = 0x0002
CASS_VALUE_TYPE_BLOB = 0x0003
CASS_VALUE_TYPE_BOOLEAN = 0x0004
CASS_VALUE_TYPE_COUNTER = 0x0005
CASS_VALUE_TYPE_DECIMAL = 0x0006
CASS_VALUE_TYPE_DOUBLE = 0x0007
CASS_VALUE_TYPE_FLOAT = 0x0008
CASS_VALUE_TYPE_INT = 0x0009
CASS_VALUE_TYPE_TEXT = 0x000A
CASS_VALUE_TYPE_TIMESTAMP = 0x000B
CASS_VALUE_TYPE_UUID = 0x000C
CASS_VALUE_TYPE_VARCHAR = 0x000D
CASS_VALUE_TYPE_VARINT = 0x000E
CASS_VALUE_TYPE_TIMEUUID = 0x000F
CASS_VALUE_TYPE_INET = 0x0010
CASS_VALUE_TYPE_LIST = 0x0020
CASS_VALUE_TYPE_MAP = 0x0021
CASS_VALUE_TYPE_SET = 0x0022
CASS_VALUE_TYPE_UDT = 0x0030
CASS_VALUE_TYPE_TUPLE = 0x0031

CassCollectionType

CASS_COLLECTION_TYPE_LIST = CASS_VALUE_TYPE_LIST
CASS_COLLECTION_TYPE_MAP = CASS_VALUE_TYPE_MAP
CASS_COLLECTION_TYPE_SET = CASS_VALUE_TYPE_SET

CassBatchType

CASS_BATCH_TYPE_LOGGED = 0
CASS_BATCH_TYPE_UNLOGGED = 1
CASS_BATCH_TYPE_COUNTER = 2

CassIteratorType

CASS_ITERATOR_TYPE_RESULT
CASS_ITERATOR_TYPE_ROW
CASS_ITERATOR_TYPE_COLLECTION
CASS_ITERATOR_TYPE_MAP
CASS_ITERATOR_TYPE_SCHEMA_META
CASS_ITERATOR_TYPE_SCHEMA_META_FIELD
CASS_ITERATOR_TYPE_TUPLE
CASS_ITERATOR_TYPE_USER_TYPE

CassSchemaMetaType

CASS_SCHEMA_META_TYPE_KEYSPACE
CASS_SCHEMA_META_TYPE_TABLE
CASS_SCHEMA_META_TYPE_COLUMN

CassLogLevel

CASS_LOG_DISABLED
CASS_LOG_CRITICAL
CASS_LOG_ERROR
CASS_LOG_WARN
CASS_LOG_INFO
CASS_LOG_DEBUG
CASS_LOG_TRACE

CassSslVerifyFlags

CASS_SSL_VERIFY_NONE
CASS_SSL_VERIFY_PEER_CERT
CASS_SSL_VERIFY_PEER_IDENTITY

CassErrorSource

CASS_ERROR_SOURCE_NONE
CASS_ERROR_SOURCE_LIB
CASS_ERROR_SOURCE_SERVER
CASS_ERROR_SOURCE_SSL
CASS_ERROR_SOURCE_COMPRESSION

CassError

CASS_OK = 0
CASS_ERROR_LIB_BAD_PARAMS = (( CASS_ERROR_SOURCE_LIB << 24) | 1 )
CASS_ERROR_LIB_NO_STREAMS = (( CASS_ERROR_SOURCE_LIB << 24) | 2 )
CASS_ERROR_LIB_UNABLE_TO_INIT = (( CASS_ERROR_SOURCE_LIB << 24) | 3 )
CASS_ERROR_LIB_MESSAGE_ENCODE = (( CASS_ERROR_SOURCE_LIB << 24) | 4 )
CASS_ERROR_LIB_HOST_RESOLUTION = (( CASS_ERROR_SOURCE_LIB << 24) | 5 )
CASS_ERROR_LIB_UNEXPECTED_RESPONSE = (( CASS_ERROR_SOURCE_LIB << 24) | 6 )
CASS_ERROR_LIB_REQUEST_QUEUE_FULL = (( CASS_ERROR_SOURCE_LIB << 24) | 7 )
CASS_ERROR_LIB_NO_AVAILABLE_IO_THREAD = (( CASS_ERROR_SOURCE_LIB << 24) | 8 )
CASS_ERROR_LIB_WRITE_ERROR = (( CASS_ERROR_SOURCE_LIB << 24) | 9 )
CASS_ERROR_LIB_NO_HOSTS_AVAILABLE = (( CASS_ERROR_SOURCE_LIB << 24) | 10 )
CASS_ERROR_LIB_INDEX_OUT_OF_BOUNDS = (( CASS_ERROR_SOURCE_LIB << 24) | 11 )
CASS_ERROR_LIB_INVALID_ITEM_COUNT = (( CASS_ERROR_SOURCE_LIB << 24) | 12 )
CASS_ERROR_LIB_INVALID_VALUE_TYPE = (( CASS_ERROR_SOURCE_LIB << 24) | 13 )
CASS_ERROR_LIB_REQUEST_TIMED_OUT = (( CASS_ERROR_SOURCE_LIB << 24) | 14 )
CASS_ERROR_LIB_UNABLE_TO_SET_KEYSPACE = (( CASS_ERROR_SOURCE_LIB << 24) | 15 )
CASS_ERROR_LIB_CALLBACK_ALREADY_SET = (( CASS_ERROR_SOURCE_LIB << 24) | 16 )
CASS_ERROR_LIB_INVALID_STATEMENT_TYPE = (( CASS_ERROR_SOURCE_LIB << 24) | 17 )
CASS_ERROR_LIB_NAME_DOES_NOT_EXIST = (( CASS_ERROR_SOURCE_LIB << 24) | 18 )
CASS_ERROR_LIB_UNABLE_TO_DETERMINE_PROTOCOL = (( CASS_ERROR_SOURCE_LIB << 24) | 19 )
CASS_ERROR_LIB_NULL_VALUE = (( CASS_ERROR_SOURCE_LIB << 24) | 20 )
CASS_ERROR_LIB_NOT_IMPLEMENTED = (( CASS_ERROR_SOURCE_LIB << 24) | 21 )
CASS_ERROR_LIB_UNABLE_TO_CONNECT = (( CASS_ERROR_SOURCE_LIB << 24) | 22 )
CASS_ERROR_LIB_UNABLE_TO_CLOSE = (( CASS_ERROR_SOURCE_LIB << 24) | 23 )
CASS_ERROR_LIB_NO_PAGING_STATE = (( CASS_ERROR_SOURCE_LIB << 24) | 24 )
CASS_ERROR_SERVER_SERVER_ERROR = (( CASS_ERROR_SOURCE_SERVER << 24) | 0x0000 )
CASS_ERROR_SERVER_PROTOCOL_ERROR = (( CASS_ERROR_SOURCE_SERVER << 24) | 0x000A )
CASS_ERROR_SERVER_BAD_CREDENTIALS = (( CASS_ERROR_SOURCE_SERVER << 24) | 0x0100 )
CASS_ERROR_SERVER_UNAVAILABLE = (( CASS_ERROR_SOURCE_SERVER << 24) | 0x1000 )
CASS_ERROR_SERVER_OVERLOADED = (( CASS_ERROR_SOURCE_SERVER << 24) | 0x1001 )
CASS_ERROR_SERVER_IS_BOOTSTRAPPING = (( CASS_ERROR_SOURCE_SERVER << 24) | 0x1002 )
CASS_ERROR_SERVER_TRUNCATE_ERROR = (( CASS_ERROR_SOURCE_SERVER << 24) | 0x1003 )
CASS_ERROR_SERVER_WRITE_TIMEOUT = (( CASS_ERROR_SOURCE_SERVER << 24) | 0x1100 )
CASS_ERROR_SERVER_READ_TIMEOUT = (( CASS_ERROR_SOURCE_SERVER << 24) | 0x1200 )
CASS_ERROR_SERVER_SYNTAX_ERROR = (( CASS_ERROR_SOURCE_SERVER << 24) | 0x2000 )
CASS_ERROR_SERVER_UNAUTHORIZED = (( CASS_ERROR_SOURCE_SERVER << 24) | 0x2100 )
CASS_ERROR_SERVER_INVALID_QUERY = (( CASS_ERROR_SOURCE_SERVER << 24) | 0x2200 )
CASS_ERROR_SERVER_CONFIG_ERROR = (( CASS_ERROR_SOURCE_SERVER << 24) | 0x2300 )
CASS_ERROR_SERVER_ALREADY_EXISTS = (( CASS_ERROR_SOURCE_SERVER << 24) | 0x2400 )
CASS_ERROR_SERVER_UNPREPARED = (( CASS_ERROR_SOURCE_SERVER << 24) | 0x2500 )
CASS_ERROR_SSL_INVALID_CERT = (( CASS_ERROR_SOURCE_SSL << 24) | 1 )
CASS_ERROR_SSL_INVALID_PRIVATE_KEY = (( CASS_ERROR_SOURCE_SSL << 24) | 2 )
CASS_ERROR_SSL_NO_PEER_CERT = (( CASS_ERROR_SOURCE_SSL << 24) | 3 )
CASS_ERROR_SSL_INVALID_PEER_CERT = (( CASS_ERROR_SOURCE_SSL << 24) | 4 )
CASS_ERROR_SSL_IDENTITY_MISMATCH = (( CASS_ERROR_SOURCE_SSL << 24) | 5 )
CASS_ERROR_SSL_PROTOCOL_ERROR = (( CASS_ERROR_SOURCE_SSL << 24) | 6 )

Functions

CassValueType

cass_data_type_type

( const CassDataType * data_type )

Gets the value type of the specified data type.

Parameters:
Name Type Details
in data_type const CassDataType *
Returns:
Type Details
CassValueType

The value type
CassError

cass_data_type_type_name

( const CassDataType * data_type, const char ** type_name, size_t * type_name_length )

Gets the type name of a UDT data type.

Note: Only valid for UDT data types.

Parameters:
Name Type Details
in data_type const CassDataType *
out type_name const char **
out type_name_length size_t *
Returns:
Type Details
CassError

CASS_OK if successful, otherwise an error occurred.
CassError

cass_data_type_set_type_name

( CassDataType * data_type, const char * type_name )

Sets the type name of a UDT data type.

Note: Only valid for UDT data types.

Parameters:
Name Type Details
in data_type CassDataType *
in type_name const char *
Returns:
Type Details
CassError

CASS_OK if successful, otherwise an error occurred.
CassError

cass_data_type_keyspace

( const CassDataType * data_type, const char ** keyspace, size_t * keyspace_length )

Gets the type name of a UDT data type.

Note: Only valid for UDT data types.

Parameters:
Name Type Details
in data_type const CassDataType *
out keyspace const char **
out keyspace_length size_t *
Returns:
Type Details
CassError

CASS_OK if successful, otherwise an error occurred.
CassError

cass_data_type_set_keyspace

( CassDataType * data_type, const char * keyspace )

Sets the keyspace of a UDT data type.

Note: Only valid for UDT data types.

Parameters:
Name Type Details
in data_type CassDataType *
in keyspace const char *
Returns:
Type Details
CassError

CASS_OK if successful, otherwise an error occurred.
CassError

cass_data_type_class_name

( CassDataType * data_type, const char ** class_name, size_t * class_name_length )

Gets the class name of a custom data type.

Note: Only valid for custom data types.

Parameters:
Name Type Details
in data_type CassDataType *
out class_name const char **
out class_name_length size_t *
Returns:
Type Details
CassError

CASS_OK if successful, otherwise an error occurred.
CassError

cass_data_type_set_class_name

( CassDataType * data_type, const char * class_name )

Sets the class name of a custom data type.

Note: Only valid for custom data types.

Parameters:
Name Type Details
in data_type CassDataType *
in class_name const char *
Returns:
Type Details
CassError

CASS_OK if successful, otherwise an error occurred.
const CassDataType *

cass_data_type_sub_data_type

( const CassDataType * data_type, size_t index )

Gets the sub-data type of a UDT (user defined type), tuple or collection at the specified index.

Note: Only valid for UDT, tuple and collection data types.

Parameters:
Name Type Details
in data_type const CassDataType *
in index size_t
Returns:
Type Details
const CassDataType *

Returns a reference to a child data type. Do not free this reference as it is bound to the lifetime of the parent data type. NULL is returned if the index is out of range.
const CassDataType *

cass_data_type_sub_data_type_by_name

( const CassDataType * data_type, const char * name )

Gets the sub-data type of a UDT (user defined type) at the specified index.

Note: Only valid for UDT data types.

Parameters:
Name Type Details
in data_type const CassDataType *
in name const char *
Returns:
Type Details
const CassDataType *

Returns a reference to a child data type. Do not free this reference as it is bound to the lifetime of the parent data type. NULL is returned if the name doesn’t exist.
CassError

cass_data_type_sub_type_name

( const CassDataType * data_type, size_t index, const char ** name, size_t * name_length )

Gets the sub-type name of a UDT (user defined type) at the specified index.

Note: Only valid for UDT data types.

Parameters:
Name Type Details
in data_type const CassDataType *
in index size_t
out name const char **
out name_length size_t *
Returns:
Type Details
CassError

CASS_OK if successful, otherwise an error occurred.
CassError

cass_data_type_add_sub_type

( CassDataType * data_type, const CassDataType * sub_data_type )

Adds a sub-data type to a tuple or collection.

Note: Only valid for tuple and collection data types.

Parameters:
Name Type Details
in data_type CassDataType *
in sub_data_type const CassDataType *
Returns:
Type Details
CassError

CASS_OK if successful, otherwise an error occurred.
CassError

cass_data_type_add_sub_type_by_name

( CassDataType * data_type, const char * name, const CassDataType * sub_data_type )

Adds a sub-data type to a UDT (user defined type).

Note: Only valid for UDT data types.

Parameters:
Name Type Details
in data_type CassDataType *
in name const char *
in sub_data_type const CassDataType *
Returns:
Type Details
CassError

CASS_OK if successful, otherwise an error occurred.
CassError

cass_data_type_add_sub_type_by_name_n

( CassDataType * data_type, const char * name, size_t name_length, const CassDataType * sub_data_type )

Same as cass_data_type_add_sub_type_by_name, but with lengths for string parameters.

Note: Only valid for UDT data types.

Parameters:
Name Type Details
in data_type CassDataType *
in name const char *
in name_length size_t
in sub_data_type const CassDataType *
Returns:
Type Details
CassError

CASS_OK if successful, otherwise an error occurred.
CassError

cass_data_type_add_sub_value_type

( CassDataType * data_type, CassValueType sub_value_type )

Adds a sub-data type to a tuple or collection using a value type.

Note: Only valid for tuple and collection data types.

Parameters:
Name Type Details
in data_type CassDataType *
in sub_value_type CassValueType
Returns:
Type Details
CassError

CASS_OK if successful, otherwise an error occurred.
CassError

cass_data_type_add_sub_value_type_by_name

( CassDataType * data_type, const char * name, CassValueType sub_value_type )

Adds a sub-data type to a UDT (user defined type) using a value type.

Note: Only valid for UDT data types.

Parameters:
Name Type Details
in data_type CassDataType *
in name const char *
in sub_value_type CassValueType
Returns:
Type Details
CassError

CASS_OK if successful, otherwise an error occurred.
CassError

cass_data_type_add_sub_value_type_by_name_n

( CassDataType * data_type, const char * name, size_t name_length, CassValueType sub_value_type )

Same as cass_data_type_add_sub_value_type_by_name, but with lengths for string parameters.

Note: Only valid for UDT data types.

Parameters:
Name Type Details
in data_type CassDataType *
in name const char *
in name_length size_t
in sub_value_type CassValueType
Returns:
Type Details
CassError

CASS_OK if successful, otherwise an error occurred.
const CassDataType *

cass_collection_data_type

( const CassCollection * collection )

Gets the data type of a collection.

Parameters:
Name Type Details
in collection const CassCollection *
Returns:
Type Details
const CassDataType *

Returns a reference to the data type of the collection. Do not free this reference as it is bound to the lifetime of the collection.
const CassDataType *

cass_tuple_data_type

( const CassTuple * tuple )

Gets the data type of a tuple.

Parameters:
Name Type Details
in tuple const CassTuple *
Returns:
Type Details
const CassDataType *

Returns a reference to the data type of the tuple. Do not free this reference as it is bound to the lifetime of the tuple.
const CassDataType *

cass_user_type_data_type

( const CassUserType * user_type )

Gets the data type of a user defined type.

Parameters:
Name Type Details
in user_type const CassUserType *
Returns:
Type Details
const CassDataType *

Returns a reference to the data type of the user defined type. Do not free this reference as it is bound to the lifetime of the user defined type.
const char *

cass_consistency_string

( CassConsistency consistency )

Gets the string for a consistency.

Parameters:
Name Type Details
in consistency CassConsistency
Returns:
Type Details
const char *

A null-terminated string for the consistency. Example: “ALL”, “ONE”, “QUORUM”, etc.
const char *

cass_write_type_string

( CassWriteType write_type )

Gets the string for a write type.

Parameters:
Name Type Details
in write_type CassWriteType
Returns:
Type Details
const char *

A null-terminated string for the write type. Example: “BATCH”, “SIMPLE”, “COUNTER”, etc.
const char *

cass_error_desc

( CassError error )

Gets a description for an error code.

Parameters:
Name Type Details
in error CassError
Returns:
Type Details
const char *

A null-terminated string describing the error.
void

cass_log_cleanup

( )

Explicitly wait for the log to flush and deallocate resources. This MUST be the last call using the library. It is an error to call any cass_*() functions after this call.

Deprecated:

This is no longer useful and does nothing. Expect this to be removed in a few releases.

void

cass_log_set_level

( CassLogLevel log_level )

Sets the log level.

Note: This needs to be done before any call that might log, such as any of the cass_cluster_*() or cass_ssl_*() functions.

Default: CASS_LOG_WARN

Parameters:
Name Type Details
in log_level CassLogLevel
void

cass_log_set_callback

( CassLogCallback callback, void * data )

Sets a callback for handling logging events.

Note: This needs to be done before any call that might log, such as any of the cass_cluster_*() or cass_ssl_*() functions.

Default: An internal callback that prints to stderr

Parameters:
Name Type Details
in callback CassLogCallback

A callback that handles logging events. This is called in a separate thread so access to shared data must be synchronized.
in data void *

An opaque data object passed to the callback.
void

cass_log_set_queue_size

( size_t queue_size )

Sets the log queue size.

Note: This needs to be done before any call that might log, such as any of the cass_cluster_*() or cass_ssl_*() functions.

Default: 2048

Deprecated:

This is no longer useful and does nothing. Expect this to be removed in a few releases.

Parameters:
Name Type Details
in queue_size size_t
const char *

cass_log_level_string

( CassLogLevel log_level )

Gets the string for a log level.

Parameters:
Name Type Details
in log_level CassLogLevel
Returns:
Type Details
const char *

A null-terminated string for the log level. Example: “ERROR”, “WARN”, “INFO”, etc.