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resp协议定义， xml定义配置文件

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1iaan
2026-01-19 10:37:32 +00:00
parent e404554363
commit bb2c4275cb
46 changed files with 9998 additions and 473 deletions
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430
kvstore.c
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@@ -12,6 +12,8 @@
#include <errno.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <libxml/parser.h>
#include "common/config.h"
#if ENABLE_ARRAY
extern kvs_array_t global_array;
@@ -29,370 +31,13 @@ extern kvs_hash_t global_hash;
extern mp_pool_t global_mempool;
#endif
#define KVS_SERVER_NOT_INIT 0
#define KVS_SERVER_MASETER 1
#define KVS_SERVER_SLAVE 2
int kvs_server_role = KVS_SERVER_NOT_INIT;
AppConfig cfg;
ServerMode mode = MODE_MASTER;
int global_cmd_log_fd = -1;
const char *command[] = {
"SET", "GET", "DEL", "MOD", "EXIST",
"RSET", "RGET", "RDEL", "RMOD", "REXIST",
"HSET", "HGET", "HDEL", "HMOD", "HEXIST"
};
const char *response[] = {
};
// return: -1 fail, 0 half, >0 consumed
int kvs_parse_one_cmd(const uint8_t *request, int request_length, kvs_req_t *req_out){
if (!request || request_length <= 0 || !req_out) return -1;
req_out->op = KVS_CMD_COUNT;
req_out->argc = 0;
req_out->args = NULL;
const uint8_t *p = request;
const uint8_t *end = request + (size_t)request_length;
// OP + ARGC
if (kvs_need(p, end, 2)) {
return 0; // NEED_MORE
}
uint8_t op = 0, argc = 0;
if (kvs_read_u8(&p, end, &op) < 0) return -1;
if (kvs_read_u8(&p, end, &argc) < 0) return -1;
if (argc > KVS_MAX_ARGC) return -1;
// 先扫描一遍确认整条命令数据都在 buffer 里
const uint8_t *scan = p;
uint32_t lens[KVS_MAX_ARGC];
if (argc > 0) {
for (uint8_t i = 0; i < argc; i++) {
if (kvs_need(scan, end, 4)) {
return 0; // NEED_MORE
}
uint32_t alen = 0;
if (kvs_read_u32(&scan, end, &alen) < 0) return -1;
// 防御：单个参数长度限制
if (alen > KVS_MAX_ARGLEN) return -1;
// 防御：scan + alen 越界 / 半包
if (kvs_need(scan, end, (size_t)alen)) {
return 0; // NEED_MORE
}
lens[i] = alen;
scan += alen;
}
}
size_t total_len = (size_t)(scan - request);
if (total_len > KVS_MAX_CMD_BYTES) return -1;
req_out->op = op;
req_out->argc = argc;
if (argc == 0) {
return (int)total_len;
}
kvs_arg_t *args = (kvs_arg_t *)kvs_malloc((size_t)argc * sizeof(kvs_arg_t));
if (!args) {
kvs_free_request(req_out);
return -1;
}
memset(args, 0, (size_t)argc * sizeof(kvs_arg_t));
for (uint8_t i = 0; i < argc; i++) {
uint32_t alen = 0;
if (kvs_read_u32(&p, end, &alen) < 0) {
kvs_free(args);
kvs_free_request(req_out);
return -1;
}
// alen 与 lens[i] 应当一致（扫描时读过），不一致说明解析器/输入异常
if (alen != lens[i]) {
kvs_free(args);
kvs_free_request(req_out);
return -1;
}
args[i].len = alen;
args[i].data = p; // 直接指向输入 buffer（零拷贝）
p += alen;
}
req_out->args = args;
return (int)(p - request);
}
void kvs_free_request(kvs_req_t *req) {
if (!req) return;
if (req->args) {
kvs_free(req->args);
req->args = NULL;
}
req->op = KVS_CMD_COUNT;
req->argc = 0;
}
/**
* 输入：req
* 输出：rsp
* 返回：-1 失败，参数错误，0 成功
*/
int kvs_execute_one_cmd(const kvs_req_t *req, kvs_rsp_t *rsp_out) {
if(!req || !rsp_out) return -1;
rsp_out->op = req->op;
rsp_out->status = KVS_STATUS_ERROR;
rsp_out->data = NULL;
rsp_out->dlen = 0;
int argc = req->argc;
kvs_cmd_t op = req->op;
kvs_arg_t *argv = req->args;
uint32_t key_len = 0;
const void *key = NULL;
uint32_t value_len = 0;
const void *val = NULL;
if(argc == 1){
key_len = argv[0].len;
key = argv[0].data;
}else if(argc == 2){
key_len = argv[0].len;
key = argv[0].data;
value_len = argv[1].len;
val = argv[1].data;
}
// 基本参数校验（按你原有命令语义）
switch (op) {
case KVS_CMD_SET:
case KVS_CMD_MOD:
case KVS_CMD_RSET:
case KVS_CMD_RMOD:
case KVS_CMD_HSET:
case KVS_CMD_HMOD:
if (argc != 2 || !key || !val) { rsp_out->status = KVS_STATUS_BADREQ; return -1; }
break;
case KVS_CMD_GET:
case KVS_CMD_DEL:
case KVS_CMD_EXIST:
case KVS_CMD_RGET:
case KVS_CMD_RDEL:
case KVS_CMD_REXIST:
case KVS_CMD_HGET:
case KVS_CMD_HDEL:
case KVS_CMD_HEXIST:
case KVS_CMD_PSYNC:
if (argc != 1 || !key) { rsp_out->status = KVS_STATUS_BADREQ; return -1; }
break;
case KVS_CMD_SAVE:
if(argc != 0) { rsp_out->status = KVS_STATUS_BADREQ; return -1; }
break;
default:
rsp_out->status = KVS_STATUS_BADREQ;
return -1;
}
int ret = 0;
const char *result = NULL;
switch (op) {
#if ENABLE_ARRAY
case KVS_CMD_SET:
ret = kvs_array_set_bin(&global_array, key, key_len, val, value_len);
if (ret < 0) rsp_out->status = KVS_STATUS_ERROR;
else if (ret == 0) rsp_out->status = KVS_STATUS_OK;
else rsp_out->status = KVS_STATUS_EXIST;
return 0;
case KVS_CMD_GET:
result = kvs_array_get_bin(&global_array, key, key_len, &value_len);
if (!result) { rsp_out->status = KVS_STATUS_NO_EXIST; return 0; }
rsp_out->status = KVS_STATUS_OK;
rsp_out->data = (uint8_t*)result;
rsp_out->dlen = (uint32_t)value_len;
return 0;
case KVS_CMD_DEL:
ret = kvs_array_del_bin(&global_array, key, key_len);
if (ret < 0) rsp_out->status = KVS_STATUS_ERROR;
else if (ret == 0) rsp_out->status = KVS_STATUS_OK;
else rsp_out->status = KVS_STATUS_NO_EXIST;
return 0;
case KVS_CMD_MOD:
ret = kvs_array_mod_bin(&global_array, key, key_len, val, value_len);
if (ret < 0) rsp_out->status = KVS_STATUS_ERROR;
else if (ret == 0) rsp_out->status = KVS_STATUS_OK;
else rsp_out->status = KVS_STATUS_NO_EXIST;
return 0;
case KVS_CMD_EXIST:
ret = kvs_array_exist_bin(&global_array, key, key_len);
rsp_out->status = (ret == 0) ? KVS_STATUS_EXIST : KVS_STATUS_NO_EXIST;
return 0;
#endif
#if ENABLE_RBTREE
case KVS_CMD_RSET:
ret = kvs_rbtree_set(&global_rbtree, key, key_len, val, value_len);
if (ret < 0) rsp_out->status = KVS_STATUS_ERROR;
else if (ret == 0) rsp_out->status = KVS_STATUS_OK;
else rsp_out->status = KVS_STATUS_EXIST;
return 0;
case KVS_CMD_RGET:
result = kvs_rbtree_get(&global_rbtree, key, key_len, &value_len);
if (!result) { rsp_out->status = KVS_STATUS_NO_EXIST; return 0; }
rsp_out->status = KVS_STATUS_OK;
rsp_out->data = (uint8_t*)result;
rsp_out->dlen = (uint32_t)value_len;
return 0;
case KVS_CMD_RDEL:
ret = kvs_rbtree_del(&global_rbtree, key, key_len);
if (ret < 0) rsp_out->status = KVS_STATUS_ERROR;
else if (ret == 0) rsp_out->status = KVS_STATUS_OK;
else rsp_out->status = KVS_STATUS_NO_EXIST;
return 0;
case KVS_CMD_RMOD:
ret = kvs_rbtree_mod(&global_rbtree, key, key_len, val, value_len);
if (ret < 0) rsp_out->status = KVS_STATUS_ERROR;
else if (ret == 0) rsp_out->status = KVS_STATUS_OK;
else rsp_out->status = KVS_STATUS_NO_EXIST;
return 0;
case KVS_CMD_REXIST:
ret = kvs_rbtree_exist(&global_rbtree, key, key_len);
rsp_out->status = (ret == 0) ? KVS_STATUS_EXIST : KVS_STATUS_NO_EXIST;
return 0;
#endif
#if ENABLE_HASH
case KVS_CMD_HSET:
ret = kvs_hash_set_bin(&global_hash, key, key_len, val, value_len);
if (ret < 0) rsp_out->status = KVS_STATUS_ERROR;
else if (ret == 0) rsp_out->status = KVS_STATUS_OK;
else rsp_out->status = KVS_STATUS_EXIST;
return 0;
case KVS_CMD_HGET:
result = kvs_hash_get_bin(&global_hash, key, key_len, &value_len);
if (!result) { rsp_out->status = KVS_STATUS_NO_EXIST; return 0; }
rsp_out->status = KVS_STATUS_OK;
rsp_out->data = (uint8_t*)result;
rsp_out->dlen = (uint32_t)value_len;
return 0;
case KVS_CMD_HDEL:
ret = kvs_hash_del_bin(&global_hash, key, key_len);
if (ret < 0) rsp_out->status = KVS_STATUS_ERROR;
else if (ret == 0) rsp_out->status = KVS_STATUS_OK;
else rsp_out->status = KVS_STATUS_NO_EXIST;
return 0;
case KVS_CMD_HMOD:
ret = kvs_hash_mod_bin(&global_hash, key, key_len, val, value_len);
if (ret < 0) rsp_out->status = KVS_STATUS_ERROR;
else if (ret == 0) rsp_out->status = KVS_STATUS_OK;
else rsp_out->status = KVS_STATUS_NO_EXIST;
return 0;
case KVS_CMD_HEXIST:
ret = kvs_hash_exist_bin(&global_hash, key, key_len);
rsp_out->status = (ret == 0) ? KVS_STATUS_EXIST : KVS_STATUS_NO_EXIST;
return 0;
#endif
case KVS_CMD_SAVE:
ret = kvs_save_to_file();
if(ret == 0) rsp_out->status = KVS_STATUS_OK;
else rsp_out->status = KVS_STATUS_ERROR;
return 0;
case KVS_CMD_PSYNC:
rsp_out->op = req->op;
rsp_out->status = KVS_STATUS_OK;
return 0;
default:
rsp_out->status = KVS_STATUS_BADREQ;
return -1;
}
return -1;
}
/**
* 构建单条响应
* 返回：-1 失败，>=0 响应长度
*/
int kvs_build_one_rsp(const kvs_rsp_t *results, uint8_t *response, size_t response_cap){
if (!results || !response) return -1;
const uint8_t *end = response + response_cap;
uint8_t *p = response;
// 计算所需长度：1 + 1 + 4 + dlen
// 注意防止 size_t 溢出
size_t need = 1u + 1u + 4u + (size_t)results->dlen;
if (need > response_cap) return -1;
if (kvs_write_u8(&p, end, (uint8_t)results->op) < 0) return -1;
if (kvs_write_u8(&p, end, results->status) < 0) return -1;
if (kvs_write_u32(&p, end, results->dlen) < 0) return -1;
if (results->dlen > 0) {
if (!results->data) return -1; // 有长度却没指针，视为错误
if (kvs_need(p, end, (size_t)results->dlen) < 0) return -1;
memcpy(p, results->data, results->dlen);
p += results->dlen;
}
return (int)(p - response);
}
int kvs_save_to_file(){
int ret = 0;
int rc = 0;
#if ENABLE_ARRAY
rc = kvs_array_save(&global_array, KVS_ARRAY_FILE);
if(rc < 0){
printf("kvs_engine_array save error\n");
ret = -1;
}
#endif
#if ENABLE_RBTREE
rc = kvs_rbtree_save(&global_rbtree, KVS_RBTREE_FILE);
if(rc < 0){
printf("kvs_engine_rbtree save error\n");
ret = -1;
}
#endif
#if ENABLE_HASH
rc = kvs_hash_save(&global_hash, KVS_HASH_FILE);
if(rc < 0){
printf("kvs_engine_hash save error\n");
ret = -1;
}
#endif
ksv_clear_log(global_cmd_log_fd);
return ret;
}
int is_update_cmd(kvs_cmd_t op){
if(op == KVS_CMD_SET || op == KVS_CMD_RSET || op == KVS_CMD_HSET
@@ -676,39 +321,48 @@ void dest_memory_pool(void){
#endif
}
/**
* ./ksvtore [role] [port]
* ./kvstore master 8888
*
* ./ksvtore [role] [port] [masterip] [masterport]
* ./kvstore slave 7000 192.168.10.129 8888
*/
int main(int argc, char *argv[]) {
printf("memory type: ");
if(MEMORY_SELECT_MALLOC == MEMORY_USE_DEFAULT){
printf("default\n");
}else if(MEMORY_SELECT_MALLOC == MEMORY_USE_MYMALLOC){
printf("my memory pool\n");
}else if(MEMORY_SELECT_MALLOC == MEMORY_USE_JEMALLOC){
printf("jemalloc\n");
}
if (argc < 3) return -1;
int init_config(AppConfig *cfg){
xmlInitParser();
char *role = argv[1];
int port = atoi(argv[2]);
if (config_load("config/config.xml", cfg) != 0) {
fprintf(stderr, "Failed to load config/config.xml\n");
xmlCleanupParser();
return -1;
}
printf("=== Config ===\n");
printf("IP : %s\n", cfg->ip);
printf("Port : %d\n", cfg->port);
printf("Log level : %s\n", log_level_to_string(cfg->log_level));
printf("Master IP : %s\n", cfg->master_ip);
printf("Master Port : %d\n", cfg->master_port);
printf("Mode : %s\n", server_mode_to_string(cfg->mode));
printf("Persistence : %s\n", persistence_to_string(cfg->persistence));
printf("Allocator : %s\n", allocator_to_string(cfg->allocator));
printf("=== Config ===\n");
xmlCleanupParser();
return 0;
}
int main(int argc, char *argv[]) {
if(-1 == init_config(&cfg)){
printf("Init Config error");
return -1;
}
int port = cfg.port;
mode = cfg.mode;
char *master_ip = NULL;
int master_port = -1;
if(strcmp(role, "master") == 0){
kvs_server_role = KVS_SERVER_SLAVE;
}else if(strcmp(role, "slave") == 0){
kvs_server_role = KVS_SERVER_MASETER;
if(argc < 5) return -1;
master_ip = argv[3];
master_port = atoi(argv[4]);
if(mode == MODE_SLAVE){
master_ip = cfg.master_ip;
master_port = cfg.master_port;
}else if(mode == MODE_MASTER){
}
init_memory_pool();