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Add session state 'discard'

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This commit is contained in:
luwenpeng
2024-03-15 15:36:26 +08:00
parent 5b8d5610a2
commit 1cdbb7c2a4
10 changed files with 134 additions and 42 deletions
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2
src/session/session.cpp
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@@ -421,6 +421,8 @@ const char *session_state_to_str(enum session_state state)
return "active";
case SESSION_STATE_CLOSING:
return "closing";
case SESSION_STATE_DISCARD:
return "discard";
case SESSION_STATE_CLOSED:
return "closed";
default:

5
src/session/session.h
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@@ -17,8 +17,9 @@ enum session_state
SESSION_STATE_OPENING = 1,
SESSION_STATE_ACTIVE = 2,
SESSION_STATE_CLOSING = 3,
SESSION_STATE_CLOSED = 4,
MAX_STATE = 5,
SESSION_STATE_DISCARD = 4,
SESSION_STATE_CLOSED = 5,
MAX_STATE = 6,
};
enum session_type

6
src/session/session_manager.cpp
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@@ -174,6 +174,9 @@ static void session_stat_inc(struct session_stat *stat, enum session_state state
case SESSION_STATE_CLOSING:
stat->nr_sess_closing++;
break;
case SESSION_STATE_DISCARD:
stat->nr_sess_discard++;
break;
case SESSION_STATE_CLOSED:
stat->nr_sess_closed++;
break;
@@ -198,6 +201,9 @@ static void session_stat_dec(struct session_stat *stat, enum session_state state
case SESSION_STATE_CLOSING:
stat->nr_sess_closing--;
break;
case SESSION_STATE_DISCARD:
stat->nr_sess_discard--;
break;
case SESSION_STATE_CLOSED:
stat->nr_sess_closed--;
break;

1
src/session/session_manager.h
View File

@@ -53,6 +53,7 @@ struct session_stat
uint64_t nr_sess_opening;
uint64_t nr_sess_active;
uint64_t nr_sess_closing;
uint64_t nr_sess_discard;
uint64_t nr_sess_closed;
uint64_t nr_new_sess_evicted;

64
src/session/session_transition.cpp
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@@ -3,7 +3,7 @@
#include "session_transition.h"
#define MAX_TRANSITION_PER_STATE 4
#define MAX_TRANSITION_PER_STATE 8
struct session_transition
{
@@ -20,14 +20,20 @@ struct session_transition
* SESSION_STATE_OPENING -> SESSION_STATE_OPENING ( NONE )
* SESSION_STATE_OPENING -> SESSION_STATE_ACTIVE ( TCP_DATA | UDP_DATA )
* SESSION_STATE_OPENING -> SESSION_STATE_CLOSING ( TCP_FIN | TCP_RST | TIMEOUT )
* SESSION_STATE_OPENING -> SESSION_STATE_DISCARD ( USER_CLOSE )
* SESSION_STATE_OPENING -> SESSION_STATE_CLOSED ( LRU_EVICT )
*
* SESSION_STATE_ACTIVE -> SESSION_STATE_ACTIVE ( NONE )
* SESSION_STATE_ACTIVE -> SESSION_STATE_CLOSING ( TCP_FIN | TCP_RST | TIMEOUT )
* SESSION_STATE_ACTIVE -> SESSION_STATE_DISCARD ( USER_CLOSE )
* SESSION_STATE_ACTIVE -> SESSION_STATE_CLOSED ( LRU_EVICT )
*
* SESSION_STATE_CLOSING -> SESSION_STATE_CLOSING ( NONE )
* SESSION_STATE_CLOSING -> SESSION_STATE_CLOSED ( TIMEOUT | LRU_EVICT )
* SESSION_STATE_CLOSING -> SESSION_STATE_DISCARD ( USER_CLOSE )
* SESSION_STATE_CLOSING -> SESSION_STATE_CLOSED ( LRU_EVICT | TIMEOUT )
*
* SESSION_STATE_DISCARD -> SESSION_STATE_DISCARD ( NONE )
* SESSION_STATE_DISCARD -> SESSION_STATE_CLOSED ( LRU_EVICT | TIMEOUT )
*/
static void session_inputs_to_str(int inputs, char *buff, int len)
@@ -65,57 +71,61 @@ static void session_inputs_to_str(int inputs, char *buff, int len)
{
nused += snprintf(buff + nused, len - nused, "LRU_EVICT ");
}
if (inputs & USER_CLOSE)
{
nused += snprintf(buff + nused, len - nused, "USER_CLOSE ");
}
}
void session_transition_init()
{
// SESSION_STATE_INIT -> SESSION_STATE_OPENING ( TCP_SYN | TCP_SYN_ACK | UDP_DATA )
// SESSION_STATE_INIT -> SESSION_STATE_INIT ( NONE )
fsm[SESSION_STATE_INIT][0].inputs_mask = TCP_SYN | TCP_SYN_ACK | UDP_DATA;
fsm[SESSION_STATE_INIT][0].next_state = SESSION_STATE_OPENING;
fsm[SESSION_STATE_INIT][1].inputs_mask = NONE;
fsm[SESSION_STATE_INIT][1].next_state = SESSION_STATE_INIT;
// SESSION_STATE_OPENING -> SESSION_STATE_ACTIVE ( TCP_DATA | UDP_DATA )
// SESSION_STATE_OPENING -> SESSION_STATE_CLOSING ( TCP_FIN | TCP_RST | TIMEOUT )
// SESSION_STATE_OPENING -> SESSION_STATE_CLOSED ( LRU_EVICT )
// SESSION_STATE_OPENING -> SESSION_STATE_OPENING ( NONE )
fsm[SESSION_STATE_OPENING][0].inputs_mask = TCP_DATA | UDP_DATA;
fsm[SESSION_STATE_OPENING][0].next_state = SESSION_STATE_ACTIVE;
fsm[SESSION_STATE_OPENING][1].inputs_mask = TCP_FIN | TCP_RST | TIMEOUT;
fsm[SESSION_STATE_OPENING][1].next_state = SESSION_STATE_CLOSING;
fsm[SESSION_STATE_OPENING][2].inputs_mask = LRU_EVICT;
fsm[SESSION_STATE_OPENING][2].next_state = SESSION_STATE_CLOSED;
fsm[SESSION_STATE_OPENING][2].inputs_mask = USER_CLOSE;
fsm[SESSION_STATE_OPENING][2].next_state = SESSION_STATE_DISCARD;
fsm[SESSION_STATE_OPENING][3].inputs_mask = NONE;
fsm[SESSION_STATE_OPENING][3].next_state = SESSION_STATE_OPENING;
fsm[SESSION_STATE_OPENING][3].inputs_mask = LRU_EVICT;
fsm[SESSION_STATE_OPENING][3].next_state = SESSION_STATE_CLOSED;
// SESSION_STATE_ACTIVE -> SESSION_STATE_CLOSING ( TCP_FIN | TCP_RST | TIMEOUT )
// SESSION_STATE_ACTIVE -> SESSION_STATE_CLOSED ( LRU_EVICT )
// SESSION_STATE_ACTIVE -> SESSION_STATE_ACTIVE ( NONE )
fsm[SESSION_STATE_OPENING][4].inputs_mask = NONE;
fsm[SESSION_STATE_OPENING][4].next_state = SESSION_STATE_OPENING;
fsm[SESSION_STATE_ACTIVE][0].inputs_mask = TCP_FIN | TCP_RST | TIMEOUT;
fsm[SESSION_STATE_ACTIVE][0].next_state = SESSION_STATE_CLOSING;
fsm[SESSION_STATE_ACTIVE][1].inputs_mask = LRU_EVICT;
fsm[SESSION_STATE_ACTIVE][1].next_state = SESSION_STATE_CLOSED;
fsm[SESSION_STATE_ACTIVE][1].inputs_mask = USER_CLOSE;
fsm[SESSION_STATE_ACTIVE][1].next_state = SESSION_STATE_DISCARD;
fsm[SESSION_STATE_ACTIVE][2].inputs_mask = NONE;
fsm[SESSION_STATE_ACTIVE][2].next_state = SESSION_STATE_ACTIVE;
fsm[SESSION_STATE_ACTIVE][2].inputs_mask = LRU_EVICT;
fsm[SESSION_STATE_ACTIVE][2].next_state = SESSION_STATE_CLOSED;
// SESSION_STATE_CLOSING -> SESSION_STATE_CLOSED ( TIMEOUT | LRU_EVICT )
// SESSION_STATE_CLOSING -> SESSION_STATE_CLOSING ( NONE )
fsm[SESSION_STATE_ACTIVE][3].inputs_mask = NONE;
fsm[SESSION_STATE_ACTIVE][3].next_state = SESSION_STATE_ACTIVE;
fsm[SESSION_STATE_CLOSING][0].inputs_mask = TIMEOUT | LRU_EVICT;
fsm[SESSION_STATE_CLOSING][0].next_state = SESSION_STATE_CLOSED;
fsm[SESSION_STATE_CLOSING][0].inputs_mask = USER_CLOSE;
fsm[SESSION_STATE_CLOSING][0].next_state = SESSION_STATE_DISCARD;
fsm[SESSION_STATE_CLOSING][1].inputs_mask = NONE;
fsm[SESSION_STATE_CLOSING][1].next_state = SESSION_STATE_CLOSING;
fsm[SESSION_STATE_CLOSING][1].inputs_mask = LRU_EVICT | TIMEOUT;
fsm[SESSION_STATE_CLOSING][1].next_state = SESSION_STATE_CLOSED;
fsm[SESSION_STATE_CLOSING][2].inputs_mask = NONE;
fsm[SESSION_STATE_CLOSING][2].next_state = SESSION_STATE_CLOSING;
fsm[SESSION_STATE_DISCARD][0].inputs_mask = LRU_EVICT | TIMEOUT;
fsm[SESSION_STATE_DISCARD][0].next_state = SESSION_STATE_CLOSED;
fsm[SESSION_STATE_DISCARD][1].inputs_mask = NONE;
fsm[SESSION_STATE_DISCARD][1].next_state = SESSION_STATE_DISCARD;
}
enum session_state session_transition_run(enum session_state curr_state, int inputs)

3
src/session/session_transition.h
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@@ -28,6 +28,9 @@ enum session_inputs
// session table full evict
LRU_EVICT = 1 << 7,
// user close
USER_CLOSE = 1 << 8,
};
void session_transition_init();

9
src/session/test/CMakeLists.txt
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@@ -83,6 +83,13 @@ target_link_libraries(gtest_overload_evict_tcp_sess session_manager gtest)
add_executable(gtest_overload_evict_udp_sess gtest_overload_evict_udp_sess.cpp)
target_link_libraries(gtest_overload_evict_udp_sess session_manager gtest)
###############################################################################
# gtest transistion
###############################################################################
add_executable(gtest_session_transition gtest_session_transition.cpp)
target_link_libraries(gtest_session_transition session_manager gtest)
###############################################################################
# gtest
###############################################################################
@@ -112,3 +119,5 @@ gtest_discover_tests(gtest_filter_tcp_dupkt)
gtest_discover_tests(gtest_overload_evict_tcp_sess)
gtest_discover_tests(gtest_overload_evict_udp_sess)
gtest_discover_tests(gtest_session_transition)

44
src/session/test/gtest_session_transition.cpp Normal file
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@@ -0,0 +1,44 @@
#include <gtest/gtest.h>
#include "session_transition.h"
TEST(SESSION_TRANSITION, RUN)
{
session_transition_init();
EXPECT_TRUE(session_transition_run(SESSION_STATE_INIT, NONE) == SESSION_STATE_INIT);
EXPECT_TRUE(session_transition_run(SESSION_STATE_INIT, TCP_SYN) == SESSION_STATE_OPENING);
EXPECT_TRUE(session_transition_run(SESSION_STATE_INIT, TCP_SYN_ACK) == SESSION_STATE_OPENING);
EXPECT_TRUE(session_transition_run(SESSION_STATE_INIT, UDP_DATA) == SESSION_STATE_OPENING);
EXPECT_TRUE(session_transition_run(SESSION_STATE_OPENING, NONE) == SESSION_STATE_OPENING);
EXPECT_TRUE(session_transition_run(SESSION_STATE_OPENING, TCP_DATA) == SESSION_STATE_ACTIVE);
EXPECT_TRUE(session_transition_run(SESSION_STATE_OPENING, UDP_DATA) == SESSION_STATE_ACTIVE);
EXPECT_TRUE(session_transition_run(SESSION_STATE_OPENING, TCP_FIN) == SESSION_STATE_CLOSING);
EXPECT_TRUE(session_transition_run(SESSION_STATE_OPENING, TCP_RST) == SESSION_STATE_CLOSING);
EXPECT_TRUE(session_transition_run(SESSION_STATE_OPENING, TIMEOUT) == SESSION_STATE_CLOSING);
EXPECT_TRUE(session_transition_run(SESSION_STATE_OPENING, USER_CLOSE) == SESSION_STATE_DISCARD);
EXPECT_TRUE(session_transition_run(SESSION_STATE_OPENING, LRU_EVICT) == SESSION_STATE_CLOSED);
EXPECT_TRUE(session_transition_run(SESSION_STATE_ACTIVE, NONE) == SESSION_STATE_ACTIVE);
EXPECT_TRUE(session_transition_run(SESSION_STATE_ACTIVE, TCP_FIN) == SESSION_STATE_CLOSING);
EXPECT_TRUE(session_transition_run(SESSION_STATE_ACTIVE, TCP_RST) == SESSION_STATE_CLOSING);
EXPECT_TRUE(session_transition_run(SESSION_STATE_ACTIVE, TIMEOUT) == SESSION_STATE_CLOSING);
EXPECT_TRUE(session_transition_run(SESSION_STATE_ACTIVE, USER_CLOSE) == SESSION_STATE_DISCARD);
EXPECT_TRUE(session_transition_run(SESSION_STATE_ACTIVE, LRU_EVICT) == SESSION_STATE_CLOSED);
EXPECT_TRUE(session_transition_run(SESSION_STATE_CLOSING, NONE) == SESSION_STATE_CLOSING);
EXPECT_TRUE(session_transition_run(SESSION_STATE_CLOSING, USER_CLOSE) == SESSION_STATE_DISCARD);
EXPECT_TRUE(session_transition_run(SESSION_STATE_CLOSING, LRU_EVICT) == SESSION_STATE_CLOSED);
EXPECT_TRUE(session_transition_run(SESSION_STATE_CLOSING, TIMEOUT) == SESSION_STATE_CLOSED);
EXPECT_TRUE(session_transition_run(SESSION_STATE_DISCARD, NONE) == SESSION_STATE_DISCARD);
EXPECT_TRUE(session_transition_run(SESSION_STATE_DISCARD, LRU_EVICT) == SESSION_STATE_CLOSED);
EXPECT_TRUE(session_transition_run(SESSION_STATE_DISCARD, TIMEOUT) == SESSION_STATE_CLOSED);
}
int main(int argc, char **argv)
{
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}