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enh: refact dmFile.c

This commit is contained in:
Shengliang Guan 2023-01-11 11:18:39 +08:00
parent ba7f9f1df1
commit 8c9daa32fc
1 changed files with 55 additions and 22 deletions
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77
source/dnode/mgmt/node_util/src/dmFile.c
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@ -19,48 +19,81 @@
#define MAXLEN 1024
int32_t dmReadFile(const char *path, const char *name, bool *pDeployed) {
int32_t code = TSDB_CODE_INVALID_JSON_FORMAT;
int64_t len = 0;
char content[MAXLEN + 1] = {0};
cJSON *root = NULL;
char file[PATH_MAX] = {0};
TdFilePtr pFile = NULL;
static int32_t dmDecodeFile(SJson *pJson, bool *deployed) {
int32_t code = 0;
int32_t value = 0;
tjsonGetInt32ValueFromDouble(pJson, "deployed", value, code);
if (code < 0) return -1;
*deployed = (value != 0);
return code;
}
int32_t dmReadFile(const char *path, const char *name, bool *pDeployed) {
int32_t code = -1;
TdFilePtr pFile = NULL;
char *content = NULL;
SJson *pJson = NULL;
char file[PATH_MAX] = {0};
snprintf(file, sizeof(file), "%s%s%s.json", path, TD_DIRSEP, name);
pFile = taosOpenFile(file, TD_FILE_READ);
if (pFile == NULL) {
if (taosStatFile(file, NULL, NULL) < 0) {
dInfo("file:%s not exist", file);
code = 0;
goto _OVER;
}
len = taosReadFile(pFile, content, MAXLEN);
if (len <= 0) {
dError("failed to read %s since content is null", file);
pFile = taosOpenFile(file, TD_FILE_READ);
if (pFile == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
dError("failed to open file:%s since %s", file, terrstr());
goto _OVER;
}
root = cJSON_Parse(content);
if (root == NULL) {
dError("failed to read %s since invalid json format", file);
int64_t size = 0;
if (taosFStatFile(pFile, &size, NULL) < 0) {
terrno = TAOS_SYSTEM_ERROR(errno);
dError("failed to fstat file:%s since %s", file, terrstr());
goto _OVER;
}
cJSON *deployed = cJSON_GetObjectItem(root, "deployed");
if (!deployed || deployed->type != cJSON_Number) {
dError("failed to read %s since deployed not found", file);
content = taosMemoryMalloc(size + 1);
if (content == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
goto _OVER;
}
if (taosReadFile(pFile, content, size) != size) {
terrno = TAOS_SYSTEM_ERROR(errno);
dError("failed to read file:%s since %s", file, terrstr());
goto _OVER;
}
content[size] = '\0';
pJson = tjsonParse(content);
if (pJson == NULL) {
terrno = TSDB_CODE_INVALID_JSON_FORMAT;
goto _OVER;
}
if (dmDecodeFile(pJson, pDeployed) < 0) {
terrno = TSDB_CODE_INVALID_JSON_FORMAT;
goto _OVER;
}
*pDeployed = deployed->valueint != 0;
dDebug("succcessed to read file %s, deployed:%d", file, *pDeployed);
code = 0;
dInfo("succceed to read mnode file %s", file);
_OVER:
if (root != NULL) cJSON_Delete(root);
if (content != NULL) taosMemoryFree(content);
if (pJson != NULL) cJSON_Delete(pJson);
if (pFile != NULL) taosCloseFile(&pFile);
terrno = code;
if (code != 0) {
dError("failed to read dnode file:%s since %s", file, terrstr());
}
return code;
}