100 lines
2.0 KiB
C
100 lines
2.0 KiB
C
#include "kvstore.h"
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#include "kvs_rw_tools.h"
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#include <arpa/inet.h>
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#include <fcntl.h>
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#include <unistd.h>
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int init_cmd_log(const char *file, int *logfd){
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if(!file) return -1;
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int fd = open(file, O_RDWR | O_CREAT | O_APPEND, 0644);
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if(fd < 0) return -2;
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*logfd = fd;
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return 0;
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}
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int destroy_cmd_log(int logfd){
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close(logfd);
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return 0;
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}
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int kvs_save_cmd_to_logfile(const uint8_t *cmd, size_t len, int logfd){
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if (logfd < 0 || !cmd || len == 0)
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return -1;
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if (len > UINT32_MAX)
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return -2;
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uint32_t nlen = htonl((uint32_t)len);
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if (write_full(logfd, &nlen, sizeof(nlen)) < 0)
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return -3;
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if (write_full(logfd, cmd, len) < 0)
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return -4;
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if (fsync(logfd) < 0)
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return -5;
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return 0;
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}
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int kvs_replay_log(const char *logfile, int logfd){
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if (!logfile|| logfd<0) return -1;
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for (;;) {
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uint32_t nlen = 0;
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int hr = read_full(logfd, &nlen, sizeof(nlen));
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if (hr == 0) break; /* EOF：正常结束 */
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if (hr < 0) { return -2; } /* 半截头 */
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uint32_t len = ntohl(nlen);
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if (len == 0) { return -3; }
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uint8_t *cmd = (uint8_t *)kvs_malloc(len);
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if (!cmd) { return -5; }
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int pr = read_full(logfd, cmd, len);
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if (pr <= 0) { /* 半截 payload */
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kvs_free(cmd);
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return -6;
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}
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kvs_req_t req;
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memset(&req, 0, sizeof(req));
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int clen = kvs_parse_one_cmd(cmd, (int)len, &req);
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if (clen <= 0 || clen != (int)len) {
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kvs_free_request(&req);
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kvs_free(cmd);
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return -7;
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}
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kvs_rsp_t rsp;
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memset(&rsp, 0, sizeof(rsp));
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if (kvs_execute_one_cmd(&req, &rsp) < 0) {
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kvs_free_request(&req);
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kvs_free(cmd);
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return -8;
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}
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kvs_free_request(&req);
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kvs_free(cmd);
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}
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return 0;
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}
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/**
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* clear log file not close
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*/
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int ksv_clear_log(int logfd){
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if(logfd < 0) return -1;
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ftruncate(logfd, 0);
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lseek(logfd, 0, SEEK_SET);
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return 0;
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} |