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check protocol state to determine real ok packet

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This commit is contained in:
Dapeng Huang
2018-01-22 14:52:12 +08:00
parent 8ce7683a0a
commit 81f303512e
5 changed files with 148 additions and 73 deletions
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1
cmake/BuildMariaDBConnector.cmake
View File

@ -8,7 +8,6 @@
set(MARIADB_CONNECTOR_C_REPO "https://github.com/MariaDB/mariadb-connector-c.git"
CACHE STRING "MariaDB Connector-C Git repository")
# Connector-C tag to use
set(MARIADB_CONNECTOR_C_TAG "v3.0.3"
CACHE STRING "MariaDB Connector-C Git tag")

3
include/maxscale/protocol/mysql.h
View File

@ -353,6 +353,7 @@ typedef struct
int ignore_replies; /*< How many replies should be discarded */
GWBUF* stored_query; /*< Temporarily stored queries */
bool collect_result; /*< Collect the next result set as one buffer */
int num_eof_packets; /*< Signal number to indicate is current packet is ok packet*/
#if defined(SS_DEBUG)
skygw_chk_t protocol_chk_tail;
#endif
@ -492,7 +493,7 @@ char* create_auth_fail_str(char *username, char *hostaddr, bool password, char *
void init_response_status(GWBUF* buf, uint8_t cmd, int* npackets, size_t* nbytes);
bool read_complete_packet(DCB *dcb, GWBUF **readbuf);
bool gw_get_shared_session_auth_info(DCB* dcb, MYSQL_session* session);
void mxs_mysql_get_session_track_info(GWBUF *buff, uint32_t server_capabilities);
void mxs_mysql_get_session_track_info(GWBUF *buff, MySQLProtocol *proto);
mysql_tx_state_t parse_trx_state(const char *str);
/**

86
server/core/test/test_session_track.cc
View File

@ -7,6 +7,8 @@
#include <maxscale/buffer.h>
#include <maxscale/protocol/mysql.h>
MySQLProtocol proto;
static const uint8_t resultset1[] =
{
/* BEGIN;*/
@ -117,52 +119,98 @@ static const uint8_t resultset2[] =
0xFE, 0x00, 0x00, 0x21, 0x40
};
/**
* SET AUTOCOMMIT=0;
* CREATE TABLE t1(a VARCHAR(20), b INT, c INT, d INT);
* INSERT INTO t1 VALUES ('', 100, 200, 300);
* SELECT * FROM t1;
**/
static const uint8_t resultset3[] =
{
0x28, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01,
0x40, 0x00, 0x00, 0x00, 0x1F, 0x00, 0x0F, 0x0A,
0x61, 0x75, 0x74, 0x6F, 0x63, 0x6F, 0x6D, 0x6D,
0x69, 0x74, 0x03, 0x4F, 0x46, 0x46, 0x02, 0x01,
0x31, 0x05, 0x09, 0x08, 0x49, 0x5F, 0x52, 0x5F,
0x5F, 0x5F, 0x53, 0x5F, 0x1D, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,
0x14, 0x00, 0x0F, 0x0A, 0x61, 0x75, 0x74, 0x6F,
0x63, 0x6F, 0x6D, 0x6D, 0x69, 0x74, 0x03, 0x4F,
0x46, 0x46, 0x02, 0x01, 0x31, 0x07, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x14, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01,
0x40, 0x00, 0x00, 0x00, 0x0B, 0x05, 0x09, 0x08,
0x49, 0x5F, 0x5F, 0x5F, 0x57, 0x5F, 0x5F, 0x5F,
0x01, 0x00, 0x00, 0x01, 0x04, 0x20, 0x00, 0x00,
0x02, 0x03, 0x64, 0x65, 0x66, 0x04, 0x74, 0x65,
0x73, 0x74, 0x02, 0x74, 0x31, 0x02, 0x74, 0x31,
0x01, 0x61, 0x01, 0x61, 0x0C, 0x21, 0x00, 0x3C,
0x00, 0x00, 0x00, 0xFD, 0x00, 0x00, 0x00, 0x00,
0x00, 0x20, 0x00, 0x00, 0x03, 0x03, 0x64, 0x65,
0x66, 0x04, 0x74, 0x65, 0x73, 0x74, 0x02, 0x74,
0x31, 0x02, 0x74, 0x31, 0x01, 0x62, 0x01, 0x62,
0x0C, 0x3F, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x03,
0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00,
0x04, 0x03, 0x64, 0x65, 0x66, 0x04, 0x74, 0x65,
0x73, 0x74, 0x02, 0x74, 0x31, 0x02, 0x74, 0x31,
0x01, 0x63, 0x01, 0x63, 0x0C, 0x3F, 0x00, 0x0B,
0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00,
0x00, 0x20, 0x00, 0x00, 0x05, 0x03, 0x64, 0x65,
0x66, 0x04, 0x74, 0x65, 0x73, 0x74, 0x02, 0x74,
0x31, 0x02, 0x74, 0x31, 0x01, 0x64, 0x01, 0x64,
0x0C, 0x3F, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x03,
0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00,
0x06, 0xFE, 0x00, 0x00, 0x21, 0x00, 0x05, 0x00,
0x00, 0x07, 0xFE, 0x00, 0x00, 0x21, 0x00
};
/* functional test , test packet by packet */
void test1()
{
GWBUF *buffer;
uint32_t server_capabilities = GW_MYSQL_CAPABILITIES_SESSION_TRACK;
proto.server_capabilities = GW_MYSQL_CAPABILITIES_SESSION_TRACK;
proto.num_eof_packets = 0;
ss_dfprintf(stderr,"test_session_track : Functional tests.\n");
//BEGIN
buffer = gwbuf_alloc_and_load(PACKET_1_LEN, resultset1+PACKET_1_IDX);
mxs_mysql_get_session_track_info(buffer, server_capabilities);
mxs_mysql_get_session_track_info(buffer, &proto);
ss_dassert(strncmp(gwbuf_get_property(buffer, (char *)"trx_state"), "T_______", 8) == 0);
gwbuf_free(buffer);
//COMMIT
buffer = gwbuf_alloc_and_load(PACKET_2_LEN, resultset1+PACKET_2_IDX);
mxs_mysql_get_session_track_info(buffer, server_capabilities);
mxs_mysql_get_session_track_info(buffer, &proto);
ss_dassert(strncmp(gwbuf_get_property(buffer, (char *)"trx_state"), "________", 8) == 0);
gwbuf_free(buffer);
//START TRANSACTION
buffer = gwbuf_alloc_and_load(PACKET_3_LEN, resultset1+PACKET_3_IDX);
mxs_mysql_get_session_track_info(buffer, server_capabilities);
mxs_mysql_get_session_track_info(buffer, &proto);
ss_dassert(strncmp(gwbuf_get_property(buffer, (char *)"trx_state"), "T_______", 8) == 0);
gwbuf_free(buffer);
//START TRANSACTION READ ONLY
buffer = gwbuf_alloc_and_load(PACKET_4_LEN, resultset1+PACKET_4_IDX);
mxs_mysql_get_session_track_info(buffer, server_capabilities);
mxs_mysql_get_session_track_info(buffer, &proto);
ss_dassert(strncmp(gwbuf_get_property(buffer, (char *)"trx_characteristics"),
"START TRANSACTION READ ONLY;", 28) == 0);
gwbuf_free(buffer);
//COMMIT
buffer = gwbuf_alloc_and_load(PACKET_5_LEN, resultset1+PACKET_5_IDX);
mxs_mysql_get_session_track_info(buffer, server_capabilities);
mxs_mysql_get_session_track_info(buffer, &proto);
ss_dassert(gwbuf_get_property(buffer, (char *)"trx_characteristics") == NULL);
ss_dassert(gwbuf_get_property(buffer, (char *)"trx_state") == NULL);
gwbuf_free(buffer);
//SET AUTOCOMMIT=0;
buffer = gwbuf_alloc_and_load(PACKET_6_LEN, resultset1+PACKET_6_IDX);
mxs_mysql_get_session_track_info(buffer, server_capabilities);
mxs_mysql_get_session_track_info(buffer, &proto);
ss_dassert(strncmp(gwbuf_get_property(buffer, (char *)"autocommit"), "OFF", 3) == 0);
gwbuf_free(buffer);
//INSERT INTO t1 VALUES(1);
buffer = gwbuf_alloc_and_load(PACKET_7_LEN, resultset1+PACKET_7_IDX);
mxs_mysql_get_session_track_info(buffer, server_capabilities);
mxs_mysql_get_session_track_info(buffer, &proto);
ss_dassert(strncmp(gwbuf_get_property(buffer, (char *)"trx_state"), "I___W___", 8) == 0);
gwbuf_free(buffer);
//COMMIT
buffer = gwbuf_alloc_and_load(PACKET_8_LEN, resultset1+PACKET_8_IDX);
mxs_mysql_get_session_track_info(buffer, server_capabilities);
mxs_mysql_get_session_track_info(buffer, &proto);
ss_dassert(strncmp(gwbuf_get_property(buffer, (char *)"trx_state"), "________", 8) == 0);
gwbuf_free(buffer);
}
@ -171,10 +219,23 @@ void test1()
void test2()
{
GWBUF *buffer;
uint32_t server_capabilities = GW_MYSQL_CAPABILITIES_SESSION_TRACK;
ss_dfprintf(stderr, "test_session_track : multi results test\n");
ss_dfprintf(stderr, "test_session_track: multi results test\n");
proto.server_capabilities = GW_MYSQL_CAPABILITIES_SESSION_TRACK;
proto.num_eof_packets = 0;
buffer = gwbuf_alloc_and_load(sizeof(resultset2), resultset2);
mxs_mysql_get_session_track_info(buffer, server_capabilities);
mxs_mysql_get_session_track_info(buffer, &proto);
ss_dassert(strncmp(gwbuf_get_property(buffer, (char *)"trx_state"), "I_R_W___", 8) == 0);
gwbuf_free(buffer);
}
void test3()
{
GWBUF *buffer;
proto.server_capabilities = GW_MYSQL_CAPABILITIES_SESSION_TRACK;
proto.num_eof_packets = 0;
ss_dfprintf(stderr, "test_session_track: protocol state test\n");
buffer = gwbuf_alloc_and_load(sizeof(resultset2), resultset2);
mxs_mysql_get_session_track_info(buffer, &proto);
ss_dassert(strncmp(gwbuf_get_property(buffer, (char *)"trx_state"), "I_R_W___", 8) == 0);
gwbuf_free(buffer);
}
@ -183,5 +244,6 @@ int main(int argc, char **argv)
{
test1();
test2();
test3();
return 0;
}

2
server/modules/protocol/MySQL/mariadbbackend/mysql_backend.c
View File

@ -771,7 +771,7 @@ gw_read_and_write(DCB *dcb)
}
/** Get sesion track info from ok packet and save it to gwbuf properties */
mxs_mysql_get_session_track_info(tmp, proto->server_capabilities);
mxs_mysql_get_session_track_info(tmp, proto);
read_buffer = tmp;

129
server/modules/protocol/MySQL/mysql_common.cc
View File

@ -71,6 +71,7 @@ MySQLProtocol* mysql_protocol_init(DCB* dcb, int fd)
p->extra_capabilities = 0;
p->ignore_replies = 0;
p->collect_result = false;
p->num_eof_packets = 0;
#if defined(SS_DEBUG)
p->protocol_chk_top = CHK_NUM_PROTOCOL;
p->protocol_chk_tail = CHK_NUM_PROTOCOL;
@ -1774,10 +1775,7 @@ void mxs_mysql_execute_kill_user(MXS_SESSION* issuer, const char* user, kill_typ
* @param packet_offset Ok packet offset in this buff
* @param packet_len Ok packet lengh
*/
void mxs_mysql_parse_ok_packet(GWBUF *buff,
size_t packet_offset,
size_t packet_len,
uint32_t server_capabilities)
void mxs_mysql_parse_ok_packet(GWBUF *buff, size_t packet_offset, size_t packet_len)
{
uint8_t local_buf[packet_len];
uint8_t *ptr = local_buf;
@ -1791,56 +1789,53 @@ void mxs_mysql_parse_ok_packet(GWBUF *buff,
ptr += 2; // status
ptr += 2; // number of warnings
if (server_capabilities & GW_MYSQL_CAPABILITIES_SESSION_TRACK)
if (ptr < (local_buf + packet_len))
{
if (ptr < (local_buf + packet_len))
ptr += mxs_leint_consume(&ptr); // info
if (server_status & SERVER_SESSION_STATE_CHANGED)
{
ptr += mxs_leint_consume(&ptr); // info
if (server_status & SERVER_SESSION_STATE_CHANGED)
mxs_leint_consume(&ptr); // total SERVER_SESSION_STATE_CHANGED length
while (ptr < (local_buf + packet_len))
{
mxs_leint_consume(&ptr); // total SERVER_SESSION_STATE_CHANGED length
while (ptr < (local_buf + packet_len))
{
enum_session_state_type type =
(enum enum_session_state_type)mxs_leint_consume(&ptr);
enum_session_state_type type =
(enum enum_session_state_type)mxs_leint_consume(&ptr);
#if defined(SS_DEBUG)
ss_dassert(type <= SESSION_TRACK_TRANSACTION_TYPE);
ss_dassert(type <= SESSION_TRACK_TRANSACTION_TYPE);
#endif
switch (type)
{
case SESSION_TRACK_STATE_CHANGE:
case SESSION_TRACK_SCHEMA:
case SESSION_TRACK_GTIDS:
ptr += mxs_leint_consume(&ptr);
break;
case SESSION_TRACK_TRANSACTION_CHARACTERISTICS:
mxs_leint_consume(&ptr); //length
var_value = mxs_lestr_consume_dup(&ptr);
gwbuf_add_property(buff, (char *)"trx_characteristics", var_value);
MXS_FREE(var_value);
break;
case SESSION_TRACK_SYSTEM_VARIABLES:
mxs_leint_consume(&ptr); //lenth
// system variables like autocommit, schema, charset ...
var_name = mxs_lestr_consume_dup(&ptr);
var_value = mxs_lestr_consume_dup(&ptr);
gwbuf_add_property(buff, var_name, var_value);
MXS_DEBUG("SESSION_TRACK_SYSTEM_VARIABLES, name:%s, value:%s", var_name, var_value);
MXS_FREE(var_name);
MXS_FREE(var_value);
break;
case SESSION_TRACK_TRANSACTION_TYPE:
mxs_leint_consume(&ptr); // length
trx_info = mxs_lestr_consume_dup(&ptr);
MXS_DEBUG("get trx_info:%s", trx_info);
gwbuf_add_property(buff, (char *)"trx_state", trx_info);
MXS_FREE(trx_info);
break;
default:
ptr += mxs_leint_consume(&ptr);
MXS_WARNING("recieved unexpecting session track type:%d", type);
break;
}
switch (type)
{
case SESSION_TRACK_STATE_CHANGE:
case SESSION_TRACK_SCHEMA:
case SESSION_TRACK_GTIDS:
ptr += mxs_leint_consume(&ptr);
break;
case SESSION_TRACK_TRANSACTION_CHARACTERISTICS:
mxs_leint_consume(&ptr); //length
var_value = mxs_lestr_consume_dup(&ptr);
gwbuf_add_property(buff, (char *)"trx_characteristics", var_value);
MXS_FREE(var_value);
break;
case SESSION_TRACK_SYSTEM_VARIABLES:
mxs_leint_consume(&ptr); //lenth
// system variables like autocommit, schema, charset ...
var_name = mxs_lestr_consume_dup(&ptr);
var_value = mxs_lestr_consume_dup(&ptr);
gwbuf_add_property(buff, var_name, var_value);
MXS_DEBUG("SESSION_TRACK_SYSTEM_VARIABLES, name:%s, value:%s", var_name, var_value);
MXS_FREE(var_name);
MXS_FREE(var_value);
break;
case SESSION_TRACK_TRANSACTION_TYPE:
mxs_leint_consume(&ptr); // length
trx_info = mxs_lestr_consume_dup(&ptr);
MXS_DEBUG("get trx_info:%s", trx_info);
gwbuf_add_property(buff, (char *)"trx_state", trx_info);
MXS_FREE(trx_info);
break;
default:
ptr += mxs_leint_consume(&ptr);
MXS_WARNING("recieved unexpecting session track type:%d", type);
break;
}
}
}
@ -1852,21 +1847,39 @@ void mxs_mysql_parse_ok_packet(GWBUF *buff,
* @param buff Buffer contain multi compelte packets
* @param server_capabilities Server capabilities
*/
void mxs_mysql_get_session_track_info(GWBUF *buff, uint32_t server_capabilities)
void mxs_mysql_get_session_track_info(GWBUF *buff, MySQLProtocol *proto)
{
size_t offset = 0;
uint8_t header_and_command[MYSQL_HEADER_LEN+1];
while(gwbuf_copy_data(buff, offset, MYSQL_HEADER_LEN+1, header_and_command) == (MYSQL_HEADER_LEN+1))
if (proto->server_capabilities & GW_MYSQL_CAPABILITIES_SESSION_TRACK)
{
size_t packet_len = gw_mysql_get_byte3(header_and_command) + MYSQL_HEADER_LEN;
uint8_t cmd = header_and_command[MYSQL_COM_OFFSET];
if (packet_len > MYSQL_OK_PACKET_MIN_LEN && cmd == MYSQL_REPLY_OK)
while (gwbuf_copy_data(buff, offset, MYSQL_HEADER_LEN+1, header_and_command) == (MYSQL_HEADER_LEN+1))
{
buff->gwbuf_type |= GWBUF_TYPE_REPLY_OK;
mxs_mysql_parse_ok_packet(buff, offset, packet_len, server_capabilities);
size_t packet_len = gw_mysql_get_byte3(header_and_command) + MYSQL_HEADER_LEN;
uint8_t cmd = header_and_command[MYSQL_COM_OFFSET];
if (packet_len > MYSQL_OK_PACKET_MIN_LEN && cmd == MYSQL_REPLY_OK && proto->num_eof_packets == 0)
{
buff->gwbuf_type |= GWBUF_TYPE_REPLY_OK;
mxs_mysql_parse_ok_packet(buff, offset, packet_len);
}
offset += packet_len;
/* first packet of result set */
if ((proto->current_command == MXS_COM_QUERY ||
proto->current_command == MXS_COM_STMT_FETCH ||
proto->current_command == MXS_COM_STMT_EXECUTE) &&
proto->num_eof_packets == 0 &&
cmd > MYSQL_REPLY_OK &&
cmd < MYSQL_REPLY_LOCAL_INFILE)
{
proto->num_eof_packets = 2;
}
if (cmd == MYSQL_REPLY_EOF && proto->num_eof_packets > 0)
{
proto->num_eof_packets--;
}
}
offset += packet_len;
}
}