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enh: refact vmFile.c

This commit is contained in:
Shengliang Guan 2023-01-11 10:44:07 +08:00
parent c3cb4a52fc
commit 9a95c3d7ab
1 changed files with 89 additions and 84 deletions
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173
source/dnode/mgmt/mgmt_vnode/src/vmFile.c
View File

@ -14,8 +14,8 @@
*/
#define _DEFAULT_SOURCE
#include "vmInt.h"
#include "tjson.h"
#include "vmInt.h"
#define MAX_CONTENT_LEN 2 * 1024 * 1024
@ -46,102 +46,107 @@ SVnodeObj **vmGetVnodeListFromHash(SVnodeMgmt *pMgmt, int32_t *numOfVnodes) {
return pVnodes;
}
int32_t vmGetVnodeListFromFile(SVnodeMgmt *pMgmt, SWrapperCfg **ppCfgs, int32_t *numOfVnodes) {
int32_t code = TSDB_CODE_INVALID_JSON_FORMAT;
int32_t len = 0;
int32_t maxLen = MAX_CONTENT_LEN;
char *content = taosMemoryCalloc(1, maxLen + 1);
cJSON *root = NULL;
FILE *fp = NULL;
char file[PATH_MAX] = {0};
static int32_t vmDecodeVnodeList(SJson *pJson, SVnodeMgmt *pMgmt, SWrapperCfg **ppCfgs, int32_t *numOfVnodes) {
int32_t code = -1;
SWrapperCfg *pCfgs = NULL;
TdFilePtr pFile = NULL;
snprintf(file, sizeof(file), "%s%svnodes.json", pMgmt->path, TD_DIRSEP);
pFile = taosOpenFile(file, TD_FILE_READ);
if (pFile == NULL) {
dInfo("file %s not exist", file);
code = 0;
goto _OVER;
}
if (content == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
return -1;
}
len = (int32_t)taosReadFile(pFile, content, maxLen);
if (len <= 0) {
dError("failed to read %s since content is null", file);
goto _OVER;
}
content[len] = 0;
root = cJSON_Parse(content);
if (root == NULL) {
dError("failed to read %s since invalid json format", file);
goto _OVER;
}
cJSON *vnodes = cJSON_GetObjectItem(root, "vnodes");
if (!vnodes || vnodes->type != cJSON_Array) {
dError("failed to read %s since vnodes not found", file);
goto _OVER;
}
SJson *vnodes = tjsonGetObjectItem(pJson, "vnodes");
if (vnodes == NULL) return -1;
int32_t vnodesNum = cJSON_GetArraySize(vnodes);
if (vnodesNum > 0) {
pCfgs = taosMemoryCalloc(vnodesNum, sizeof(SWrapperCfg));
if (pCfgs == NULL) {
dError("failed to read %s since out of memory", file);
code = TSDB_CODE_OUT_OF_MEMORY;
goto _OVER;
}
for (int32_t i = 0; i < vnodesNum; ++i) {
cJSON *vnode = cJSON_GetArrayItem(vnodes, i);
SWrapperCfg *pCfg = &pCfgs[i];
cJSON *vgId = cJSON_GetObjectItem(vnode, "vgId");
if (!vgId || vgId->type != cJSON_Number) {
dError("failed to read %s since vgId not found", file);
taosMemoryFree(pCfgs);
goto _OVER;
}
pCfg->vgId = vgId->valueint;
snprintf(pCfg->path, sizeof(pCfg->path), "%s%svnode%d", pMgmt->path, TD_DIRSEP, pCfg->vgId);
cJSON *dropped = cJSON_GetObjectItem(vnode, "dropped");
if (!dropped || dropped->type != cJSON_Number) {
dError("failed to read %s since dropped not found", file);
taosMemoryFree(pCfgs);
goto _OVER;
}
pCfg->dropped = dropped->valueint;
cJSON *vgVersion = cJSON_GetObjectItem(vnode, "vgVersion");
if (!vgVersion || vgVersion->type != cJSON_Number) {
dError("failed to read %s since vgVersion not found", file);
taosMemoryFree(pCfgs);
goto _OVER;
}
pCfg->vgVersion = vgVersion->valueint;
}
*ppCfgs = pCfgs;
if (pCfgs == NULL) return -1;
}
for (int32_t i = 0; i < vnodesNum; ++i) {
SJson *vnode = tjsonGetArrayItem(vnodes, i);
if (vnode == NULL) goto _OVER;
SWrapperCfg *pCfg = &pCfgs[i];
tjsonGetInt32ValueFromDouble(vnode, "id", pCfg->vgId, code);
if (code < 0) goto _OVER;
tjsonGetInt32ValueFromDouble(vnode, "dropped", pCfg->dropped, code);
if (code < 0) goto _OVER;
tjsonGetInt32ValueFromDouble(vnode, "vgVersion", pCfg->vgVersion, code);
if (code < 0) goto _OVER;
snprintf(pCfg->path, sizeof(pCfg->path), "%s%svnode%d", pMgmt->path, TD_DIRSEP, pCfg->vgId);
}
*numOfVnodes = vnodesNum;
code = 0;
dInfo("succcessed to read file %s, numOfVnodes:%d", file, vnodesNum);
*ppCfgs = pCfgs;
*numOfVnodes = vnodesNum;
_OVER:
if (content != NULL) taosMemoryFree(content);
if (root != NULL) cJSON_Delete(root);
if (*ppCfgs == NULL) taosMemoryFree(pCfgs);
return code;
}
int32_t vmGetVnodeListFromFile(SVnodeMgmt *pMgmt, SWrapperCfg **ppCfgs, int32_t *numOfVnodes) {
int32_t code = -1;
TdFilePtr pFile = NULL;
char *pData = NULL;
SJson *pJson = NULL;
char file[PATH_MAX] = {0};
SWrapperCfg *pCfgs = NULL;
snprintf(file, sizeof(file), "%s%svnodes.json", pMgmt->path, TD_DIRSEP);
if (taosStatFile(file, NULL, NULL) < 0) {
dInfo("vnode file:%s not exist", file);
return 0;
}
pFile = taosOpenFile(file, TD_FILE_READ);
if (pFile == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
dError("failed to open vnode file:%s since %s", file, terrstr());
goto _OVER;
}
int64_t size = 0;
if (taosFStatFile(pFile, &size, NULL) < 0) {
terrno = TAOS_SYSTEM_ERROR(errno);
dError("failed to fstat mnode file:%s since %s", file, terrstr());
goto _OVER;
}
pData = taosMemoryMalloc(size + 1);
if (pData == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
goto _OVER;
}
if (taosReadFile(pFile, pData, size) != size) {
terrno = TAOS_SYSTEM_ERROR(errno);
dError("failed to read vnode file:%s since %s", file, terrstr());
goto _OVER;
}
pData[size] = '\0';
pJson = tjsonParse(pData);
if (pJson == NULL) {
terrno = TSDB_CODE_INVALID_JSON_FORMAT;
goto _OVER;
}
if (vmDecodeVnodeList(pJson, pMgmt, ppCfgs, numOfVnodes) < 0) {
terrno = TSDB_CODE_INVALID_JSON_FORMAT;
goto _OVER;
}
code = 0;
dInfo("succceed to read vnode file %s", file);
_OVER:
if (pData != NULL) taosMemoryFree(pData);
if (pJson != NULL) cJSON_Delete(pJson);
if (pFile != NULL) taosCloseFile(&pFile);
terrno = code;
if (code != 0) {
dError("failed to read vnode file:%s since %s", file, terrstr());
}
return code;
}