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#include <assert.h>
#include "tfe_session_table.h"
#include <tfe_utils.h>
extern void *g_packet_io_logger;
struct session_table
{
struct session_node *root_by_id;
struct session_node *root_by_addr;
uint64_t session_node_count;
};
// Note: session_addr must be initialized by memset(0) before use !!!
struct session_table *session_table_create()
{
struct session_table *table = (struct session_table *)calloc(1, sizeof(struct session_table));
assert(table);
table->session_node_count = 0;
return table;
}
void session_table_destory(struct session_table *table)
{
if (table)
{
struct session_node *temp = NULL;
struct session_node *node = NULL;
HASH_ITER(hh1, table->root_by_id, node, temp)
{
HASH_DELETE(hh1, table->root_by_id, node);
if (!node->is_session_id_only_key)
{
HASH_DELETE(hh2, table->root_by_addr, node);
}
if (node->val_freecb && node->val_data)
{
node->val_freecb(node->val_data);
}
free(node);
node = NULL;
}
free(table);
table = NULL;
}
}
void session_table_reset(struct session_table *table)
{
if (table)
{
struct session_node *temp = NULL;
struct session_node *node = NULL;
HASH_ITER(hh1, table->root_by_id, node, temp)
{
HASH_DELETE(hh1, table->root_by_id, node);
if (!node->is_session_id_only_key)
{
HASH_DELETE(hh2, table->root_by_addr, node);
}
if (node->val_freecb && node->val_data)
{
node->val_freecb(node->val_data);
}
free(node);
node = NULL;
table->session_node_count--;
}
}
}
uint64_t session_table_count(struct session_table *table)
{
if (table)
{
return table->session_node_count;
}
else
{
return 0;
}
}
// session_addr : deep copy
// val_data : shallow copy (malloc by user, free by val_freecb)
int session_table_insert(struct session_table *table, uint8_t is_session_id_only_key, uint64_t session_id, const struct tuple4 *session_addr, void *val_data, const fn_free_cb *val_freecb)
{
struct session_node *temp = NULL;
HASH_FIND(hh1, table->root_by_id, &session_id, sizeof(session_id), temp);
if (temp)
{
TFE_LOG_DEBUG(g_packet_io_logger, "%s: insert: key %lu exists", LOG_TAG_STABLE, session_id);
return -1;
}
temp = (struct session_node *)calloc(1, sizeof(struct session_node));
assert(temp);
temp->is_session_id_only_key = is_session_id_only_key;
temp->session_id = session_id;
memcpy(&temp->session_addr, session_addr, sizeof(struct tuple4));
temp->val_data = val_data;
temp->val_freecb = val_freecb;
HASH_ADD(hh1, table->root_by_id, session_id, sizeof(temp->session_id), temp);
if (!is_session_id_only_key)
{
HASH_ADD(hh2, table->root_by_addr, session_addr, sizeof(temp->session_addr), temp);
}
TFE_LOG_DEBUG(g_packet_io_logger, "%s: insert: key %lu success", LOG_TAG_STABLE, session_id);
table->session_node_count++;
return 0;
}
int session_table_delete_by_id(struct session_table *table, uint64_t session_id)
{
struct session_node *temp = NULL;
HASH_FIND(hh1, table->root_by_id, &session_id, sizeof(session_id), temp);
if (!temp)
{
TFE_LOG_DEBUG(g_packet_io_logger, "%s: delete: key %lu not exists", LOG_TAG_STABLE, session_id);
return -1;
}
HASH_DELETE(hh1, table->root_by_id, temp);
if (!temp->is_session_id_only_key)
{
HASH_DELETE(hh2, table->root_by_addr, temp);
}
if (temp->val_freecb && temp->val_data)
{
temp->val_freecb(temp->val_data);
temp->val_data = NULL;
}
free(temp);
temp = NULL;
TFE_LOG_DEBUG(g_packet_io_logger, "%s: delete: key %lu success", LOG_TAG_STABLE, session_id);
table->session_node_count--;
return 0;
}
int session_table_delete_by_addr(struct session_table *table, const struct tuple4 *session_addr)
{
struct session_node *temp = NULL;
char buffer[128] = {0};
tuple4_tostring(session_addr, buffer, sizeof(buffer));
HASH_FIND(hh2, table->root_by_addr, session_addr, sizeof(struct tuple4), temp);
if (!temp)
{
struct tuple4 reverse_addr;
memset(&reverse_addr, 0, sizeof(struct tuple4));
tuple4_reverse(session_addr, &reverse_addr);
HASH_FIND(hh2, table->root_by_addr, &reverse_addr, sizeof(struct tuple4), temp);
if (!temp)
{
TFE_LOG_DEBUG(g_packet_io_logger, "%s: delete: key %s not exists", LOG_TAG_STABLE, buffer);
return -1;
}
}
HASH_DELETE(hh1, table->root_by_id, temp);
HASH_DELETE(hh2, table->root_by_addr, temp);
if (temp->val_freecb && temp->val_data)
{
temp->val_freecb(temp->val_data);
temp->val_data = NULL;
}
free(temp);
temp = NULL;
TFE_LOG_DEBUG(g_packet_io_logger, "%s: delete: key %s success", LOG_TAG_STABLE, buffer);
table->session_node_count--;
return 0;
}
struct session_node *session_table_search_by_id(struct session_table *table, uint64_t session_id)
{
struct session_node *temp = NULL;
HASH_FIND(hh1, table->root_by_id, &session_id, sizeof(session_id), temp);
if (!temp)
{
TFE_LOG_DEBUG(g_packet_io_logger, "%s: search: key %lu not exists", LOG_TAG_STABLE, session_id);
return NULL;
}
TFE_LOG_DEBUG(g_packet_io_logger, "%s: search: key %lu success", LOG_TAG_STABLE, session_id);
return temp;
}
struct session_node *session_table_search_by_addr(struct session_table *table, const struct tuple4 *session_addr)
{
struct session_node *temp = NULL;
HASH_FIND(hh2, table->root_by_addr, session_addr, sizeof(struct tuple4), temp);
if (!temp)
{
struct tuple4 reverse_addr;
memset(&reverse_addr, 0, sizeof(struct tuple4));
tuple4_reverse(session_addr, &reverse_addr);
HASH_FIND(hh2, table->root_by_addr, &reverse_addr, sizeof(struct tuple4), temp);
if (!temp)
{
return NULL;
}
}
return temp;
}
void session_foreach(struct session_table *table, struct fieldstat_easy_intercept *metrics, int (*func)(struct fieldstat_easy_intercept *, void *, int), int thread_index)
{
struct session_node *temp = NULL;
struct session_node *node = NULL;
if (!func)
return;
HASH_ITER(hh1, table->root_by_id, node, temp)
{
func(metrics, node->val_data, thread_index);
}
return;
}
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