bool VelocyPackHelper::velocyPackToFile(char const* filename,
VPackSlice const& slice,
bool syncFile) {
std::string const tmp = std::string(filename) + ".tmp";
// remove a potentially existing temporary file
if (TRI_ExistsFile(tmp.c_str())) {
TRI_UnlinkFile(tmp.c_str());
}
int fd = TRI_CREATE(tmp.c_str(), O_CREAT | O_TRUNC | O_EXCL | O_RDWR | TRI_O_CLOEXEC,
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
if (fd < 0) {
TRI_set_errno(TRI_ERROR_SYS_ERROR);
LOG(ERR) << "cannot create json file '" << tmp << "': " << TRI_LAST_ERROR_STR;
return false;
}
if (!PrintVelocyPack(fd, slice, true)) {
TRI_CLOSE(fd);
TRI_set_errno(TRI_ERROR_SYS_ERROR);
LOG(ERR) << "cannot write to json file '" << tmp << "': " << TRI_LAST_ERROR_STR;
TRI_UnlinkFile(tmp.c_str());
return false;
}
if (syncFile) {
LOG(TRACE) << "syncing tmp file '" << tmp << "'";
if (!TRI_fsync(fd)) {
TRI_CLOSE(fd);
TRI_set_errno(TRI_ERROR_SYS_ERROR);
LOG(ERR) << "cannot sync saved json '" << tmp << "': " << TRI_LAST_ERROR_STR;
TRI_UnlinkFile(tmp.c_str());
return false;
}
}
int res = TRI_CLOSE(fd);
if (res < 0) {
TRI_set_errno(TRI_ERROR_SYS_ERROR);
LOG(ERR) << "cannot close saved file '" << tmp << "': " << TRI_LAST_ERROR_STR;
TRI_UnlinkFile(tmp.c_str());
return false;
}
res = TRI_RenameFile(tmp.c_str(), filename);
if (res != TRI_ERROR_NO_ERROR) {
TRI_set_errno(res);
LOG(ERR) << "cannot rename saved file '" << tmp << "' to '" << filename << "': " << TRI_LAST_ERROR_STR;
TRI_UnlinkFile(tmp.c_str());
return false;
}
return true;
}
bool TRI_SaveJson (char const* filename, TRI_json_t const* object) {
bool ok;
char* tmp;
int fd;
int res;
ssize_t m;
tmp = TRI_Concatenate2String(filename, ".tmp");
if (tmp == NULL) {
return false;
}
fd = TRI_CREATE(tmp, O_CREAT | O_EXCL | O_RDWR, S_IRUSR | S_IWUSR);
if (fd < 0) {
TRI_set_errno(TRI_ERROR_SYS_ERROR);
LOG_ERROR("cannot create json file '%s': '%s'", tmp, TRI_LAST_ERROR_STR);
TRI_FreeString(TRI_CORE_MEM_ZONE, tmp);
return false;
}
ok = TRI_PrintJson(fd, object);
if (! ok) {
TRI_set_errno(TRI_ERROR_SYS_ERROR);
LOG_ERROR("cannot write to json file '%s': '%s'", tmp, TRI_LAST_ERROR_STR);
TRI_UnlinkFile(tmp);
TRI_FreeString(TRI_CORE_MEM_ZONE, tmp);
return false;
}
m = TRI_WRITE(fd, "\n", 1);
if (m <= 0) {
TRI_set_errno(TRI_ERROR_SYS_ERROR);
LOG_ERROR("cannot write to json file '%s': '%s'", tmp, TRI_LAST_ERROR_STR);
TRI_UnlinkFile(tmp);
TRI_FreeString(TRI_CORE_MEM_ZONE, tmp);
return false;
}
ok = TRI_fsync(fd);
if (! ok) {
TRI_set_errno(TRI_ERROR_SYS_ERROR);
LOG_ERROR("cannot sync saved json '%s': '%s'", tmp, TRI_LAST_ERROR_STR);
TRI_UnlinkFile(tmp);
TRI_FreeString(TRI_CORE_MEM_ZONE, tmp);
return false;
}
res = TRI_CLOSE(fd);
if (res < 0) {
TRI_set_errno(TRI_ERROR_SYS_ERROR);
LOG_ERROR("cannot close saved file '%s': '%s'", tmp, TRI_LAST_ERROR_STR);
TRI_UnlinkFile(tmp);
TRI_FreeString(TRI_CORE_MEM_ZONE, tmp);
return false;
}
res = TRI_RenameFile(tmp, filename);
if (res != TRI_ERROR_NO_ERROR) {
LOG_ERROR("cannot rename saved file '%s' to '%s': '%s'", tmp, filename, TRI_LAST_ERROR_STR);
TRI_UnlinkFile(tmp);
TRI_FreeString(TRI_CORE_MEM_ZONE, tmp);
return res;
}
TRI_FreeString(TRI_CORE_MEM_ZONE, tmp);
return ok;
}
bool TRI_SaveJson (char const* filename,
TRI_json_t const* object,
bool syncFile) {
char* tmp;
int fd;
int res;
tmp = TRI_Concatenate2String(filename, ".tmp");
if (tmp == NULL) {
return false;
}
// remove a potentially existing temporary file
if (TRI_ExistsFile(tmp)) {
TRI_UnlinkFile(tmp);
}
fd = TRI_CREATE(tmp, O_CREAT | O_TRUNC | O_EXCL | O_RDWR, S_IRUSR | S_IWUSR);
if (fd < 0) {
TRI_set_errno(TRI_ERROR_SYS_ERROR);
LOG_ERROR("cannot create json file '%s': %s", tmp, TRI_LAST_ERROR_STR);
TRI_FreeString(TRI_CORE_MEM_ZONE, tmp);
return false;
}
if (! TRI_PrintJson(fd, object, true)) {
TRI_CLOSE(fd);
TRI_set_errno(TRI_ERROR_SYS_ERROR);
LOG_ERROR("cannot write to json file '%s': %s", tmp, TRI_LAST_ERROR_STR);
TRI_UnlinkFile(tmp);
TRI_FreeString(TRI_CORE_MEM_ZONE, tmp);
return false;
}
if (syncFile) {
LOG_TRACE("syncing tmp file '%s'", tmp);
if (! TRI_fsync(fd)) {
TRI_CLOSE(fd);
TRI_set_errno(TRI_ERROR_SYS_ERROR);
LOG_ERROR("cannot sync saved json '%s': %s", tmp, TRI_LAST_ERROR_STR);
TRI_UnlinkFile(tmp);
TRI_FreeString(TRI_CORE_MEM_ZONE, tmp);
return false;
}
}
res = TRI_CLOSE(fd);
if (res < 0) {
TRI_set_errno(TRI_ERROR_SYS_ERROR);
LOG_ERROR("cannot close saved file '%s': %s", tmp, TRI_LAST_ERROR_STR);
TRI_UnlinkFile(tmp);
TRI_FreeString(TRI_CORE_MEM_ZONE, tmp);
return false;
}
res = TRI_RenameFile(tmp, filename);
if (res != TRI_ERROR_NO_ERROR) {
TRI_set_errno(res);
LOG_ERROR("cannot rename saved file '%s' to '%s': %s", tmp, filename, TRI_LAST_ERROR_STR);
TRI_UnlinkFile(tmp);
TRI_FreeString(TRI_CORE_MEM_ZONE, tmp);
return false;
}
TRI_FreeString(TRI_CORE_MEM_ZONE, tmp);
return true;
}