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config rotation + redundancy prototype

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This commit is contained in:
tildearrow 2023-04-05 17:35:01 -05:00
parent e6bac16a7a
commit e16fdf0626
3 changed files with 79 additions and 0 deletions
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26
src/engine/config.cpp
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@ -27,6 +27,30 @@
#define CHECK_BUF_SIZE 8192
bool DivConfig::save(const char* path, bool redundancy) {
if (redundancy) {
char oldPath[4096];
char newPath[4096];
if (fileExists(path)==1) {
logD("rotating config files...");
for (int i=4; i>=0; i--) {
if (i>0) {
snprintf(oldPath,4095,"%s.%d",path,i);
} else {
strncpy(oldPath,path,4095);
}
snprintf(newPath,4095,"%s.%d",path,i+1);
if (i>=4) {
logV("remove %s",oldPath);
deleteFile(oldPath);
} else {
logV("move %s to %s",oldPath,newPath);
moveFiles(oldPath,newPath);
}
}
}
}
logD("opening config for write: %s",path);
FILE* f=ps_fopen(path,"wb");
if (f==NULL) {
@ -39,7 +63,9 @@ bool DivConfig::save(const char* path, bool redundancy) {
if (fwrite(toWrite.c_str(),1,toWrite.size(),f)!=toWrite.size()) {
logW("could not write config file! %s",strerror(errno));
reportError(fmt::sprintf("could not write config file! %s",strerror(errno)));
logV("removing config file");
fclose(f);
deleteFile(path);
return false;
}
}