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accel.c
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#include <math.h>
#include <stdint.h>
#include <stdlib.h>
#include <Python.h>
#ifndef Py_LIMITED_API
#include <datetime.h>
#endif
#ifndef PyBUF_WRITE
#define PyBUF_WRITE 0x200
#endif
#define ACCEL_OUT_TUPLES 0
#define ACCEL_OUT_STRUCTSEQUENCES 1
#define ACCEL_OUT_DICTS 2
#define ACCEL_OUT_NAMEDTUPLES 3
#define ACCEL_OUT_NUMPY 4
#define ACCEL_OUT_PANDAS 5
#define ACCEL_OUT_POLARS 6
#define ACCEL_OUT_ARROW 7
#define NUMPY_BOOL 1
#define NUMPY_INT8 2
#define NUMPY_INT16 3
#define NUMPY_INT32 4
#define NUMPY_INT64 5
#define NUMPY_UINT8 6
#define NUMPY_UINT16 7
#define NUMPY_UINT32 8
#define NUMPY_UINT64 9
#define NUMPY_FLOAT32 10
#define NUMPY_FLOAT64 11
#define NUMPY_TIMEDELTA 12
#define NUMPY_DATETIME 13
#define NUMPY_OBJECT 14
#define MYSQL_FLAG_NOT_NULL 1
#define MYSQL_FLAG_PRI_KEY 2
#define MYSQL_FLAG_UNIQUE_KEY 4
#define MYSQL_FLAG_MULTIPLE_KEY 8
#define MYSQL_FLAG_BLOB 16
#define MYSQL_FLAG_UNSIGNED 32
#define MYSQL_FLAG_ZEROFILL 64
#define MYSQL_FLAG_BINARY 128
#define MYSQL_FLAG_ENUM 256
#define MYSQL_FLAG_AUTO_INCREMENT 512
#define MYSQL_FLAG_TIMESTAMP 1024
#define MYSQL_FLAG_SET 2048
#define MYSQL_FLAG_PART_KEY 16384
#define MYSQL_FLAG_GROUP 32767
#define MYSQL_FLAG_UNIQUE 65536
#define MYSQL_TYPE_DECIMAL 0
#define MYSQL_TYPE_TINY 1
#define MYSQL_TYPE_SHORT 2
#define MYSQL_TYPE_LONG 3
#define MYSQL_TYPE_FLOAT 4
#define MYSQL_TYPE_DOUBLE 5
#define MYSQL_TYPE_NULL 6
#define MYSQL_TYPE_TIMESTAMP 7
#define MYSQL_TYPE_LONGLONG 8
#define MYSQL_TYPE_INT24 9
#define MYSQL_TYPE_DATE 10
#define MYSQL_TYPE_TIME 11
#define MYSQL_TYPE_DATETIME 12
#define MYSQL_TYPE_YEAR 13
#define MYSQL_TYPE_NEWDATE 14
#define MYSQL_TYPE_VARCHAR 15
#define MYSQL_TYPE_BIT 16
#define MYSQL_TYPE_JSON 245
#define MYSQL_TYPE_NEWDECIMAL 246
#define MYSQL_TYPE_ENUM 247
#define MYSQL_TYPE_SET 248
#define MYSQL_TYPE_TINY_BLOB 249
#define MYSQL_TYPE_MEDIUM_BLOB 250
#define MYSQL_TYPE_LONG_BLOB 251
#define MYSQL_TYPE_BLOB 252
#define MYSQL_TYPE_VAR_STRING 253
#define MYSQL_TYPE_STRING 254
#define MYSQL_TYPE_GEOMETRY 255
// SingleStoreDB extended types
#define MYSQL_TYPE_BSON 1001
#define MYSQL_TYPE_FLOAT32_VECTOR_JSON 2001
#define MYSQL_TYPE_FLOAT64_VECTOR_JSON 2002
#define MYSQL_TYPE_INT8_VECTOR_JSON 2003
#define MYSQL_TYPE_INT16_VECTOR_JSON 2004
#define MYSQL_TYPE_INT32_VECTOR_JSON 2005
#define MYSQL_TYPE_INT64_VECTOR_JSON 2006
#define MYSQL_TYPE_FLOAT32_VECTOR 3001
#define MYSQL_TYPE_FLOAT64_VECTOR 3002
#define MYSQL_TYPE_INT8_VECTOR 3003
#define MYSQL_TYPE_INT16_VECTOR 3004
#define MYSQL_TYPE_INT32_VECTOR 3005
#define MYSQL_TYPE_INT64_VECTOR 3006
#define MYSQL_TYPE_CHAR MYSQL_TYPE_TINY
#define MYSQL_TYPE_INTERVAL MYSQL_TYPE_ENUM
#define MYSQL_COLUMN_NULL 251
#define MYSQL_COLUMN_UNSIGNED_CHAR 251
#define MYSQL_COLUMN_UNSIGNED_SHORT 252
#define MYSQL_COLUMN_UNSIGNED_INT24 253
#define MYSQL_COLUMN_UNSIGNED_INT64 254
#define MYSQL_SERVER_MORE_RESULTS_EXISTS 8
// 2**24 - 1
#define MYSQL_MAX_PACKET_LEN 16777215
#define ACCEL_OPTION_TIME_TYPE_TIMEDELTA 0
#define ACCEL_OPTION_TIME_TYPE_TIME 1
#define ACCEL_OPTION_JSON_TYPE_STRING 0
#define ACCEL_OPTION_JSON_TYPE_OBJ 1
#define ACCEL_OPTION_BIT_TYPE_BYTES 0
#define ACCEL_OPTION_BIT_TYPE_INT 1
#define CHR2INT1(x) ((x)[1] - '0')
#define CHR2INT2(x) ((((x)[0] - '0') * 10) + ((x)[1] - '0'))
#define CHR2INT3(x) ((((x)[0] - '0') * 1e2) + (((x)[1] - '0') * 10) + ((x)[2] - '0'))
#define CHR2INT4(x) ((((x)[0] - '0') * 1e3) + (((x)[1] - '0') * 1e2) + (((x)[2] - '0') * 10) + ((x)[3] - '0'))
#define CHR2INT6(x) ((((x)[0] - '0') * 1e5) + (((x)[1] - '0') * 1e4) + (((x)[2] - '0') * 1e3) + (((x)[3] - '0') * 1e2) + (((x)[4] - '0') * 10) + (((x)[5] - '0')))
#define CHECK_DATE_STR(s, s_l) \
((s_l) == 10 && \
(s)[0] >= '0' && (s)[0] <= '9' && \
(s)[1] >= '0' && (s)[1] <= '9' && \
(s)[2] >= '0' && (s)[2] <= '9' && \
(s)[3] >= '0' && (s)[3] <= '9' && \
(s)[4] == '-' && \
(((s)[5] == '1' && ((s)[6] >= '0' && (s)[6] <= '2')) || \
((s)[5] == '0' && ((s)[6] >= '1' && (s)[6] <= '9'))) && \
(s)[7] == '-' && \
((((s)[8] >= '0' && (s)[8] <= '2') && ((s)[9] >= '0' && (s)[9] <= '9')) || \
((s)[8] == '3' && ((s)[9] >= '0' && (s)[9] <= '1'))) && \
!((s)[0] == '0' && (s)[1] == '0' && (s)[2] == '0' && (s)[3] == '0') && \
!((s)[5] == '0' && (s)[6] == '0') && \
!((s)[8] == '0' && (s)[9] == '0'))
#define CHECK_TIME_STR(s, s_l) \
((s_l) == 8 && \
((((s)[0] >= '0' && (s)[0] <= '1') && ((s)[1] >= '0' && (s)[1] <= '9')) || \
((s)[0] == '2' && ((s)[1] >= '0' && (s)[1] <= '3'))) && \
(s)[2] == ':' && \
(((s)[3] >= '0' && (s)[3] <= '5') && ((s)[4] >= '0' && (s)[4] <= '9')) && \
(s)[5] == ':' && \
(((s)[6] >= '0' && (s)[6] <= '5') && ((s)[7] >= '0' && (s)[7] <= '9')))
#define CHECK_MICROSECONDS_STR(s, s_l) \
((s_l) == 7 && \
(s)[0] == '.' && \
(s)[1] >= '0' && (s)[1] <= '9' && \
(s)[2] >= '0' && (s)[2] <= '9' && \
(s)[3] >= '0' && (s)[3] <= '9' && \
(s)[4] >= '0' && (s)[4] <= '9' && \
(s)[5] >= '0' && (s)[5] <= '9' && \
(s)[6] >= '0' && (s)[6] <= '9')
#define CHECK_MILLISECONDS_STR(s, s_l) \
((s_l) == 4 && \
(s)[0] == '.' && \
(s)[1] >= '0' && (s)[1] <= '9' && \
(s)[2] >= '0' && (s)[2] <= '9' && \
(s)[3] >= '0' && (s)[3] <= '9')
#define CHECK_MICRO_TIME_STR(s, s_l) \
((s_l) == 15 && CHECK_TIME_STR(s, 8) && CHECK_MICROSECONDS_STR((s)+8, 7))
#define CHECK_MILLI_TIME_STR(s, s_l) \
((s_l) == 12 && CHECK_TIME_STR(s, 8) && CHECK_MILLISECONDS_STR((s)+8, 4))
#define CHECK_DATETIME_STR(s, s_l) \
((s_l) == 19 && \
CHECK_DATE_STR(s, 10) && \
((s)[10] == ' ' || (s)[10] == 'T') && \
CHECK_TIME_STR((s)+11, 8))
#define CHECK_MICRO_DATETIME_STR(s, s_l) \
((s_l) == 26 && \
CHECK_DATE_STR(s, 10) && \
((s)[10] == ' ' || (s)[10] == 'T') && \
CHECK_MICRO_TIME_STR((s)+11, 15))
#define CHECK_MILLI_DATETIME_STR(s, s_l) \
((s_l) == 23 && \
CHECK_DATE_STR(s, 10) && \
((s)[10] == ' ' || (s)[10] == 'T') && \
CHECK_MICRO_TIME_STR((s)+11, 12))
#define CHECK_ANY_DATETIME_STR(s, s_l) \
(((s_l) == 19 && CHECK_DATETIME_STR(s, s_l)) || \
((s_l) == 23 && CHECK_MILLI_DATETIME_STR(s, s_l)) || \
((s_l) == 26 && CHECK_MICRO_DATETIME_STR(s, s_l)))
#define DATETIME_SIZE (19)
#define DATETIME_MILLI_SIZE (23)
#define DATETIME_MICRO_SIZE (26)
#define IS_DATETIME_MILLI(s, s_l) ((s_l) == 23)
#define IS_DATETIME_MICRO(s, s_l) ((s_l) == 26)
#define CHECK_ANY_TIME_STR(s, s_l) \
(((s_l) == 8 && CHECK_TIME_STR(s, s_l)) || \
((s_l) == 12 && CHECK_MILLI_TIME_STR(s, s_l)) || \
((s_l) == 15 && CHECK_MICRO_TIME_STR(s, s_l)))
#define TIME_SIZE (8)
#define TIME_MILLI_SIZE (12)
#define TIME_MICRO_SIZE (15)
#define IS_TIME_MILLI(s, s_l) ((s_l) == 12)
#define IS_TIME_MICRO(s, s_l) ((s_l) == 15)
// 0000-00-00 00:00:00
// 0000-00-00 00:00:00.000
// 0000-00-00 00:00:00.000000
#define CHECK_ANY_ZERO_DATETIME_STR(s, s_l) \
(((s_l) == 19 && CHECK_ZERO_DATETIME_STR(s, s_l)) || \
((s_l) == 23 && CHECK_ZERO_MILLI_DATETIME_STR(s, s_l)) || \
((s_l) == 26 && CHECK_ZERO_MICRO_DATETIME_STR(s, s_l)))
#define CHECK_ZERO_DATETIME_STR(s, s_l) \
(s_l == 19 && \
CHECK_ZERO_DATE_STR(s, 10) && \
((s)[10] == ' ' || (s)[10] == 'T') && \
CHECK_ZERO_TIME_STR((s)+11, 8))
#define CHECK_ZERO_MILLI_DATETIME_STR(s, s_l) \
(s_l == 23 && \
CHECK_ZERO_DATE_STR(s, 10) && \
((s)[10] == ' ' || (s)[10] == 'T') && \
CHECK_ZERO_MILLI_TIME_STR((s)+11, 12))
#define CHECK_ZERO_MICRO_DATETIME_STR(s, s_l) \
(s_l == 26 && \
CHECK_ZERO_DATE_STR(s, 10) && \
((s)[10] == ' ' || (s)[10] == 'T') && \
CHECK_ZERO_MICRO_TIME_STR((s)+11, 15))
#define CHECK_ZERO_DATE_STR(s, s_l) \
(s_l == 10 && ((s)[0] == '0' && (s)[1] == '0' && (s)[2] == '0' && (s)[3] == '0' && \
(s)[4] == '-' && (s)[5] == '0' && (s)[6] == '0' && (s)[7] == '-' && \
(s)[8] == '0' && (s)[9] == '0'))
#define CHECK_ZERO_TIME_STR(s, s_l) \
(s_l == 8 && ((s)[0] == '0' && (s)[1] == '0' && (s)[2] == ':' && \
(s)[3] == '0' && (s)[4] == '0' && (s)[5] == ':' && \
(s)[6] == '0' && (s)[7] == '0'))
#define CHECK_ZERO_MILLI_TIME_STR(s, s_l) \
(s_l == 12 && CHECK_ZERO_TIME_STR(s, 8) && \
(s)[8] == '.' && (s)[9] == '0' && (s)[10] == '0' && (s)[11] == '0')
#define CHECK_ZERO_MICRO_TIME_STR(s, s_l) \
(s_l == 15 && CHECK_ZERO_TIME_STR(s, 8) && \
(s)[8] == '.' && (s)[9] == '0' && (s)[10] == '0' && (s)[11] == '0' && \
(s)[12] == '0' && (s)[13] == '0' && (s)[14] == '0')
#define CHECK_TIMEDELTA1_STR(s, s_l) \
((s_l) == 7 && \
(s)[0] >= '0' && (s)[0] <= '9' && \
(s)[1] == ':' && \
(s)[2] >= '0' && (s)[2] <= '5' && \
(s)[3] >= '0' && (s)[3] <= '9' && \
(s)[4] == ':' && \
(s)[5] >= '0' && (s)[5] <= '5' && \
(s)[6] >= '0' && (s)[6] <= '9')
#define CHECK_TIMEDELTA1_MILLI_STR(s, s_l) \
((s_l) == 11 && CHECK_TIMEDELTA1_STR(s, 7) && CHECK_MILLISECONDS_STR((s)+7, 4))
#define CHECK_TIMEDELTA1_MICRO_STR(s, s_l) \
((s_l) == 14 && CHECK_TIMEDELTA1_STR(s, 7) && CHECK_MICROSECONDS_STR((s)+7, 7))
#define CHECK_TIMEDELTA2_STR(s, s_l) \
((s_l) == 8 && \
(s)[0] >= '0' && (s)[0] <= '9' && \
CHECK_TIMEDELTA1_STR((s)+1, 7))
#define CHECK_TIMEDELTA2_MILLI_STR(s, s_l) \
((s_l) == 12 && CHECK_TIMEDELTA2_STR(s, 8) && CHECK_MILLISECONDS_STR((s)+8, 4))
#define CHECK_TIMEDELTA2_MICRO_STR(s, s_l) \
((s_l) == 15 && CHECK_TIMEDELTA2_STR(s, 8) && CHECK_MICROSECONDS_STR((s)+8, 7))
#define CHECK_TIMEDELTA3_STR(s, s_l) \
((s_l) == 9 && \
(s)[0] >= '0' && (s)[0] <= '9' && \
(s)[1] >= '0' && (s)[1] <= '9' && \
CHECK_TIMEDELTA1_STR((s)+2, 7))
#define CHECK_TIMEDELTA3_MILLI_STR(s, s_l) \
((s_l) == 13 && CHECK_TIMEDELTA3_STR(s, 9) && CHECK_MILLISECONDS_STR((s)+9, 4))
#define CHECK_TIMEDELTA3_MICRO_STR(s, s_l) \
((s_l) == 16 && CHECK_TIMEDELTA3_STR(s, 9) && CHECK_MICROSECONDS_STR((s)+9, 7))
//
// 0:00:00 / 0:00:00.000 / 0:00:00.000000
// 00:00:00 / 00:00:00.000 / 00:00:00.000000
// 000:00:00 / 000:00:00.000 / 000:00:00.000000
//
#define CHECK_ANY_TIMEDELTA_STR(s, s_l) \
(((s_l) > 0 && (s)[0] == '-') ? \
(-1 * (_CHECK_ANY_TIMEDELTA_STR((s)+1, (s_l)-1))) : \
(_CHECK_ANY_TIMEDELTA_STR((s), (s_l))))
#define _CHECK_ANY_TIMEDELTA_STR(s, s_l) \
(CHECK_TIMEDELTA1_STR(s, s_l) || \
CHECK_TIMEDELTA2_STR(s, s_l) || \
CHECK_TIMEDELTA3_STR(s, s_l) || \
CHECK_TIMEDELTA1_MILLI_STR(s, s_l) || \
CHECK_TIMEDELTA2_MILLI_STR(s, s_l) || \
CHECK_TIMEDELTA3_MILLI_STR(s, s_l) || \
CHECK_TIMEDELTA1_MICRO_STR(s, s_l) || \
CHECK_TIMEDELTA2_MICRO_STR(s, s_l) || \
CHECK_TIMEDELTA3_MICRO_STR(s, s_l))
#define TIMEDELTA1_SIZE (7)
#define TIMEDELTA2_SIZE (8)
#define TIMEDELTA3_SIZE (9)
#define TIMEDELTA1_MILLI_SIZE (11)
#define TIMEDELTA2_MILLI_SIZE (12)
#define TIMEDELTA3_MILLI_SIZE (13)
#define TIMEDELTA1_MICRO_SIZE (14)
#define TIMEDELTA2_MICRO_SIZE (15)
#define TIMEDELTA3_MICRO_SIZE (16)
#define IS_TIMEDELTA1(s, s_l) ((s_l) == 7 || (s_l) == 11 || (s_l) == 14)
#define IS_TIMEDELTA2(s, s_l) ((s_l) == 8 || (s_l) == 12 || (s_l) == 15)
#define IS_TIMEDELTA3(s, s_l) ((s_l) == 9 || (s_l) == 13 || (s_l) == 16)
#define IS_TIMEDELTA_MILLI(s, s_l) ((s_l) == 11 || (s_l) == 12 || (s_l) == 13)
#define IS_TIMEDELTA_MICRO(s, s_l) ((s_l) == 14 || (s_l) == 15 || (s_l) == 16)
#define CHECKRC(x) if ((x) < 0) goto error;
typedef struct {
int results_type;
int parse_json;
PyObject *invalid_values;
} MySQLAccelOptions;
inline int IMAX(int a, int b) { return((a) > (b) ? a : b); }
inline int IMIN(int a, int b) { return((a) < (b) ? a : b); }
static PyObject *create_numpy_array(PyObject *py_memview, char *data_format, int data_type, PyObject *py_objs);
char *_PyUnicode_AsUTF8(PyObject *unicode) {
PyObject *bytes = PyUnicode_AsEncodedString(unicode, "utf-8", "strict");
if (!bytes) return NULL;
char *str = NULL;
Py_ssize_t str_l = 0;
if (PyBytes_AsStringAndSize(bytes, &str, &str_l) < 0) {
return NULL;
}
char *out = calloc(str_l + 1, 1);
memcpy(out, str, str_l);
return out;
}
//
// Cached int values for date/time components
//
static PyObject *PyInts[62] = {0};
//
// Cached string values
//
typedef struct {
PyObject *unbuffered_active;
PyObject *active_idx;
PyObject *_state;
PyObject *affected_rows;
PyObject *warning_count;
PyObject *connection;
PyObject *has_next;
PyObject *options;
PyObject *Decimal;
PyObject *date;
PyObject *timedelta;
PyObject *time;
PyObject *datetime;
PyObject *loads;
PyObject *field_count;
PyObject *converters;
PyObject *fields;
PyObject *flags;
PyObject *scale;
PyObject *type_code;
PyObject *name;
PyObject *table_name;
PyObject *_sock;
PyObject *settimeout;
PyObject *_rfile;
PyObject *read;
PyObject *x_errno;
PyObject *_result;
PyObject *_read_timeout;
PyObject *_next_seq_id;
PyObject *rows;
PyObject *namedtuple;
PyObject *Row;
PyObject *Series;
PyObject *array;
PyObject *vectorize;
PyObject *DataFrame;
PyObject *Table;
PyObject *from_pylist;
PyObject *int8;
PyObject *int16;
PyObject *int32;
PyObject *int64;
PyObject *float32;
PyObject *float64;
PyObject *unpack;
PyObject *decode;
PyObject *frombuffer;
} PyStrings;
static PyStrings PyStr = {0};
//
// Cached Python functions
//
typedef struct {
PyObject *json_loads;
PyObject *decimal_Decimal;
PyObject *datetime_date;
PyObject *datetime_time;
PyObject *datetime_timedelta;
PyObject *datetime_datetime;
PyObject *collections_namedtuple;
PyObject *numpy_array;
PyObject *numpy_frombuffer;
PyObject *numpy_vectorize;
PyObject *pandas_DataFrame;
PyObject *polars_DataFrame;
PyObject *pyarrow_Table;
PyObject *pyarrow_Table_from_pylist;
PyObject *struct_unpack;
PyObject *bson_decode;
} PyFunctions;
static PyFunctions PyFunc = {0};
//
// Cached Python objects
//
typedef struct {
PyObject *namedtuple_kwargs;
PyObject *create_numpy_array_args;
PyObject *create_numpy_array_kwargs;
PyObject *create_numpy_array_kwargs_vector[7];
PyObject *struct_unpack_args;
PyObject *bson_decode_args;
} PyObjects;
static PyObjects PyObj = {0};
//
// State
//
static PyTypeObject *StateType = NULL;
typedef struct {
PyObject_HEAD
PyObject *py_conn; // Database connection
PyObject *py_fields; // List of table fields
PyObject *py_rows; // Output object
PyObject *py_rfile; // Socket file I/O
PyObject *py_read; // File I/O read method
PyObject *py_sock; // Socket
PyObject *py_read_timeout; // Socket read timeout value
PyObject *py_settimeout; // Socket settimeout method
PyObject **py_converters; // List of converter functions
PyObject **py_names; // Column names
PyObject *py_names_list; // Python list of column names
PyObject *py_default_converters; // Dict of default converters
PyObject *py_namedtuple; // Generated namedtuple type
PyObject *py_namedtuple_args; // Pre-allocated tuple for namedtuple args
PyTypeObject *structsequence; // StructSequence type (like C namedtuple)
PyStructSequence_Desc structsequence_desc;
PyObject **py_encodings; // Encoding for each column as Python string
PyObject **py_invalid_values; // Values to use when invalid data exists in a cell
const char **encodings; // Encoding for each column
unsigned long long n_cols; // Total number of columns
unsigned long long n_rows; // Total number of rows read
unsigned long long n_rows_in_batch; // Number of rows in current batch (fetchmany size)
unsigned long *type_codes; // Type code for each column
unsigned long *flags; // Column flags
unsigned long *scales; // Column scales
unsigned long *offsets; // Column offsets in buffer
unsigned long long next_seq_id; // MySQL packet sequence number
MySQLAccelOptions options; // Packet reader options
int unbuffered; // Are we running in unbuffered mode?
int is_eof; // Have we hit the eof packet yet?
struct {
PyObject *_next_seq_id;
PyObject *rows;
} py_str;
char *encoding_errors;
} StateObject;
static int read_options(MySQLAccelOptions *options, PyObject *dict);
#define DESTROY(x) do { if (x) { free((void*)x); (x) = NULL; } } while (0)
int ensure_numpy() {
if (PyFunc.numpy_array && PyFunc.numpy_vectorize) goto exit;
// Import numpy if it exists
PyObject *numpy_mod = PyImport_ImportModule("numpy");
if (!numpy_mod) goto error;
PyFunc.numpy_array = PyObject_GetAttr(numpy_mod, PyStr.array);
if (!PyFunc.numpy_array) goto error;
PyFunc.numpy_frombuffer = PyObject_GetAttr(numpy_mod, PyStr.frombuffer);
if (!PyFunc.numpy_frombuffer) goto error;
PyFunc.numpy_vectorize = PyObject_GetAttr(numpy_mod, PyStr.vectorize);
if (!PyFunc.numpy_vectorize) goto error;
exit:
return 0;
error:
PyErr_Clear();
return -1;
}
int ensure_pandas() {
if (PyFunc.pandas_DataFrame) goto exit;
// Import pandas if it exists
PyObject *pandas_mod = PyImport_ImportModule("pandas");
if (!pandas_mod) goto error;
PyFunc.pandas_DataFrame = PyObject_GetAttr(pandas_mod, PyStr.DataFrame);
if (!PyFunc.pandas_DataFrame) goto error;
exit:
return 0;
error:
PyErr_Clear();
return -1;
}
int ensure_polars() {
if (PyFunc.polars_DataFrame) goto exit;
// Import polars if it exists
PyObject *polars_mod = PyImport_ImportModule("polars");
if (!polars_mod) goto error;
PyFunc.polars_DataFrame = PyObject_GetAttr(polars_mod, PyStr.DataFrame);
if (!PyFunc.polars_DataFrame) goto error;
exit:
return 0;
error:
PyErr_Clear();
return -1;
}
int ensure_pyarrow() {
if (PyFunc.pyarrow_Table_from_pylist) goto exit;
// Import pyarrow if it exists
PyObject *pyarrow_mod = PyImport_ImportModule("pyarrow");
if (!pyarrow_mod) goto error;
PyFunc.pyarrow_Table = PyObject_GetAttr(pyarrow_mod, PyStr.Table);
if (!PyFunc.pyarrow_Table) goto error;
PyFunc.pyarrow_Table_from_pylist = PyObject_GetAttr(PyFunc.pyarrow_Table, PyStr.from_pylist);
if (!PyFunc.pyarrow_Table_from_pylist) goto error;
exit:
return 0;
error:
PyErr_Clear();
return -1;
}
int ensure_bson() {
if (PyFunc.bson_decode) goto exit;
// Import bson if it exists
PyObject *bson_mod = PyImport_ImportModule("bson");
if (!bson_mod) goto error;
PyFunc.bson_decode = PyObject_GetAttr(bson_mod, PyStr.decode);
if (!PyFunc.bson_decode) goto error;
exit:
return 0;
error:
PyErr_Clear();
return -1;
}
static void State_clear_fields(StateObject *self) {
if (!self) return;
DESTROY(self->offsets);
DESTROY(self->scales);
DESTROY(self->flags);
DESTROY(self->type_codes);
DESTROY(self->encodings);
DESTROY(self->structsequence_desc.fields);
DESTROY(self->encoding_errors);
if (self->py_converters) {
for (unsigned long i = 0; i < self->n_cols; i++) {
Py_CLEAR(self->py_converters[i]);
}
DESTROY(self->py_converters);
}
if (self->py_names) {
for (unsigned long i = 0; i < self->n_cols; i++) {
Py_CLEAR(self->py_names[i]);
}
DESTROY(self->py_names);
}
if (self->py_encodings) {
for (unsigned long i = 0; i < self->n_cols; i++) {
Py_CLEAR(self->py_encodings[i]);
}
DESTROY(self->py_encodings);
}
if (self->py_invalid_values) {
for (unsigned long i = 0; i < self->n_cols; i++) {
Py_CLEAR(self->py_invalid_values[i]);
}
DESTROY(self->py_invalid_values);
}
Py_CLEAR(self->structsequence);
Py_CLEAR(self->py_namedtuple);
Py_CLEAR(self->py_namedtuple_args);
Py_CLEAR(self->py_names_list);
Py_CLEAR(self->py_default_converters);
Py_CLEAR(self->py_settimeout);
Py_CLEAR(self->py_read_timeout);
Py_CLEAR(self->py_sock);
Py_CLEAR(self->py_read);
Py_CLEAR(self->py_rfile);
Py_CLEAR(self->py_rows);
Py_CLEAR(self->py_fields);
Py_CLEAR(self->py_conn);
}
static void State_dealloc(StateObject *self) {
State_clear_fields(self);
PyObject_Del(self);
}
static int State_init(StateObject *self, PyObject *args, PyObject *kwds) {
int rc = 0;
PyObject *py_res = NULL;
PyObject *py_converters = NULL;
PyObject *py_options = NULL;
PyObject *py_args = NULL;
unsigned long long requested_n_rows = 0;
if (!PyArg_ParseTuple(args, "OK", &py_res, &requested_n_rows)) {
return -1;
}
py_options = PyObject_GetAttr(py_res, PyStr.options);
if (!py_options) {
Py_INCREF(Py_None);
py_options = Py_None;
}
if (PyDict_Check(py_options)) {
self->py_default_converters = PyDict_GetItemString(py_options, "default_converters");
if (self->py_default_converters && !PyDict_Check(self->py_default_converters)) {
self->py_default_converters = NULL;
}
Py_XINCREF(self->py_default_converters);
PyObject *py_unbuffered = PyDict_GetItemString(py_options, "unbuffered");
if (py_unbuffered && PyObject_IsTrue(py_unbuffered)) {
self->unbuffered = 1;
}
PyObject *py_encoding_errors = PyDict_GetItemString(py_options, "encoding_errors");
if (py_encoding_errors) {
self->encoding_errors = _PyUnicode_AsUTF8(py_encoding_errors);
if (!self->encoding_errors) goto error;
}
}
if (!self->encoding_errors) {
self->encoding_errors = calloc(7, 1);
if (!self->encoding_errors) goto error;
memcpy(self->encoding_errors, "strict", 6);
}
if (self->unbuffered) {
PyObject *unbuffered_active = PyObject_GetAttr(py_res, PyStr.unbuffered_active);
if (!unbuffered_active || !PyObject_IsTrue(unbuffered_active)) {
Py_XDECREF(unbuffered_active);
goto error;
}
Py_XDECREF(unbuffered_active);
}
// Retrieve type codes for each column.
PyObject *py_field_count = PyObject_GetAttr(py_res, PyStr.field_count);
if (!py_field_count) goto error;
self->n_cols = PyLong_AsUnsignedLong(py_field_count);
Py_XDECREF(py_field_count);
py_converters = PyObject_GetAttr(py_res, PyStr.converters);
if (!py_converters) goto error;
self->py_converters = calloc(self->n_cols, sizeof(PyObject*));
if (!self->py_converters) goto error;
self->type_codes = calloc(self->n_cols, sizeof(unsigned long));
if (!self->type_codes) goto error;
self->flags = calloc(self->n_cols, sizeof(unsigned long));
if (!self->flags) goto error;
self->scales = calloc(self->n_cols, sizeof(unsigned long));
if (!self->scales) goto error;
self->encodings = calloc(self->n_cols, sizeof(char*));
if (!self->encodings) goto error;
self->py_encodings = calloc(self->n_cols, sizeof(char*));
if (!self->py_encodings) goto error;
self->py_invalid_values = calloc(self->n_cols, sizeof(char*));
if (!self->py_invalid_values) goto error;
self->py_names = calloc(self->n_cols, sizeof(PyObject*));
if (!self->py_names) goto error;
self->py_fields = PyObject_GetAttr(py_res, PyStr.fields);
if (!self->py_fields) goto error;
self->py_names_list = PyList_New(self->n_cols);
if (!self->py_names_list) goto error;
for (unsigned long i = 0; i < self->n_cols; i++) {
// Get type codes.
PyObject *py_field = PyList_GetItem(self->py_fields, i);
if (!py_field) goto error;
PyObject *py_flags = PyObject_GetAttr(py_field, PyStr.flags);
if (!py_flags) goto error;
self->flags[i] = PyLong_AsUnsignedLong(py_flags);
Py_XDECREF(py_flags);
PyObject *py_scale = PyObject_GetAttr(py_field, PyStr.scale);
if (!py_scale) goto error;
self->scales[i] = PyLong_AsUnsignedLong(py_scale);
Py_XDECREF(py_scale);
PyObject *py_field_type = PyObject_GetAttr(py_field, PyStr.type_code);
if (!py_field_type) goto error;
self->type_codes[i] = PyLong_AsUnsignedLong(py_field_type);
PyObject *py_default_converter = (self->py_default_converters) ?
PyDict_GetItem(self->py_default_converters, py_field_type) : NULL;
PyObject *py_invalid_value = (self->options.invalid_values) ?
PyDict_GetItem(self->options.invalid_values, py_field_type) : NULL;
Py_XDECREF(py_field_type);
// Get field name.
PyObject *py_field_name = PyObject_GetAttr(py_field, PyStr.name);
if (!py_field_name) goto error;
// Make sure field name is not a duplicate.
int dup_found = 0;
for (unsigned long j = 0; j < i; j++) {
if (PyUnicode_Compare(self->py_names[j], py_field_name) == 0) {
dup_found = 1;
break;
}
}
if (dup_found) {
PyObject *py_table_name = PyObject_GetAttr(py_field, PyStr.table_name);
self->py_names[i] = PyUnicode_FromFormat("%U.%U", py_table_name, py_field_name);
Py_XDECREF(py_table_name);
if (!self->py_names[i]) goto error;
} else {
self->py_names[i] = py_field_name;
}
Py_INCREF(self->py_names[i]); // Extra ref since SetItem steals one
rc = PyList_SetItem(self->py_names_list, i, self->py_names[i]);
if (rc) goto error;
// Get field encodings (NULL means binary) and default converters.
PyObject *py_tmp = PyList_GetItem(py_converters, i);
if (!py_tmp) goto error;
PyObject *py_encoding = PyTuple_GetItem(py_tmp, 0);
if (!py_encoding) goto error;
PyObject *py_converter = PyTuple_GetItem(py_tmp, 1);
if (!py_converter) goto error;
self->py_encodings[i] = (py_encoding == Py_None) ? NULL : py_encoding;
Py_XINCREF(self->py_encodings[i]);
self->encodings[i] = (!py_encoding || py_encoding == Py_None) ?
NULL : _PyUnicode_AsUTF8(py_encoding);
self->py_invalid_values[i] = (!py_invalid_value || py_invalid_value == Py_None) ?
NULL : py_converter;
Py_XINCREF(self->py_invalid_values[i]);
self->py_converters[i] = ((!py_converter || py_converter == py_default_converter)
// TODO: Need C accelerated converters for extended types
// && self->type_codes[i] < 256
) ?
NULL : py_converter;
Py_XINCREF(self->py_converters[i]);
}
// Loop over all data packets.
self->py_conn = PyObject_GetAttr(py_res, PyStr.connection);
if (!self->py_conn) goto error;
// Cache socket timeout and read methods.
self->py_sock = PyObject_GetAttr(self->py_conn, PyStr._sock);
if (!self->py_sock) goto error;
self->py_settimeout = PyObject_GetAttr(self->py_sock, PyStr.settimeout);
if (!self->py_settimeout) goto error;
self->py_read_timeout = PyObject_GetAttr(self->py_conn, PyStr._read_timeout);
if (!self->py_read_timeout) goto error;
self->py_rfile = PyObject_GetAttr(self->py_conn, PyStr._rfile);
if (!self->py_rfile) goto error;
self->py_read = PyObject_GetAttr(self->py_rfile, PyStr.read);
if (!self->py_read) goto error;
PyObject *py_next_seq_id = PyObject_GetAttr(self->py_conn, PyStr._next_seq_id);
if (!py_next_seq_id) goto error;
self->next_seq_id = PyLong_AsUnsignedLongLong(py_next_seq_id);
Py_XDECREF(py_next_seq_id);
if (py_options && PyDict_Check(py_options)) {
rc = read_options(&self->options, py_options);
if (rc) goto error;
}
switch (self->options.results_type) {
case ACCEL_OUT_NAMEDTUPLES:
case ACCEL_OUT_STRUCTSEQUENCES:
if (self->options.results_type == ACCEL_OUT_NAMEDTUPLES)
{
py_args = PyTuple_New(2);
if (!py_args) goto error;
rc = PyTuple_SetItem(py_args, 0, PyStr.Row);
if (rc) goto error;
Py_INCREF(PyStr.Row);
rc = PyTuple_SetItem(py_args, 1, self->py_names_list);
if (rc) goto error;
Py_INCREF(self->py_names_list);
self->py_namedtuple = PyObject_Call(
PyFunc.collections_namedtuple,
py_args, PyObj.namedtuple_kwargs);
if (!self->py_namedtuple) goto error;
self->py_namedtuple_args = PyTuple_New(self->n_cols);
if (!self->py_namedtuple_args) goto error;
}
else
{
self->structsequence_desc.name = "singlestoredb.Row";
self->structsequence_desc.doc = "Row of data values";
self->structsequence_desc.n_in_sequence = (int)self->n_cols;
self->structsequence_desc.fields = calloc(self->n_cols + 1, sizeof(PyStructSequence_Field));
if (!self->structsequence_desc.fields) goto error;
for (unsigned long i = 0; i < self->n_cols; i++) {
self->structsequence_desc.fields[i].name = _PyUnicode_AsUTF8(self->py_names[i]);
self->structsequence_desc.fields[i].doc = NULL;
}
self->structsequence = PyStructSequence_NewType(&self->structsequence_desc);
if (!self->structsequence) goto error;
}
// Fall through
default:
// For fetchone, reuse the same list every time.
//if (requested_n_rows == 1) {
// self->py_rows = PyList_New(1);
// PyList_SetItem(self->py_rows, 0, Py_None);
//} else {
self->py_rows = PyList_New(0);
//}
if (!self->py_rows) goto error;
PyObject_SetAttr(py_res, PyStr.rows, self->py_rows);
}
exit:
Py_XDECREF(py_args);
Py_XDECREF(py_converters);
Py_XDECREF(py_options);
if (PyErr_Occurred()) {
PyErr_Print();
}
return rc;
error:
State_clear_fields(self);
rc = -1;
goto exit;
}
static int State_reset_batch(
StateObject *self,
PyObject *py_res,
unsigned long long requested_n_rows
) {
int rc = 0;
PyObject *py_tmp = NULL;
self->n_rows_in_batch = 0;
//if (requested_n_rows != 1) {
py_tmp = self->py_rows;
self->py_rows = PyList_New(0);
Py_XDECREF(py_tmp);
if (!self->py_rows) { rc = -1; goto error; }
rc = PyObject_SetAttr(py_res, PyStr.rows, self->py_rows);
//}
exit:
return rc;
error:
goto exit;
}
static PyType_Slot StateType_slots[] = {
{Py_tp_init, (initproc)State_init},
{Py_tp_dealloc, (destructor)State_dealloc},
{Py_tp_doc, "PyMySQL accelerator"},
{0, NULL},
};
static PyType_Spec StateType_spec = {
.name = "_singlestoredb_accel.State",
.basicsize = sizeof(StateObject),
.itemsize = 0,
.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
.slots = StateType_slots,
};
//
// End State
//
static int read_options(MySQLAccelOptions *options, PyObject *dict) {
if (!options || !dict) return 0;
PyObject *key = NULL;
PyObject *value = NULL;
Py_ssize_t pos = 0;
int rc = 0;
while (PyDict_Next(dict, &pos, &key, &value)) {
if (PyUnicode_CompareWithASCIIString(key, "results_type") == 0) {
if (PyUnicode_CompareWithASCIIString(value, "dict") == 0 ||
PyUnicode_CompareWithASCIIString(value, "dicts") == 0 ) {
options->results_type = ACCEL_OUT_DICTS;
}
else if (PyUnicode_CompareWithASCIIString(value, "namedtuple") == 0 ||
PyUnicode_CompareWithASCIIString(value, "namedtuples") == 0) {
options->results_type = ACCEL_OUT_NAMEDTUPLES;
}
else if (PyUnicode_CompareWithASCIIString(value, "structsequence") == 0 ||
PyUnicode_CompareWithASCIIString(value, "structsequences") == 0) {
options->results_type = ACCEL_OUT_STRUCTSEQUENCES;
}
else if (PyUnicode_CompareWithASCIIString(value, "numpy") == 0) {
options->results_type = ACCEL_OUT_NUMPY;