Clearing cache on restart

[ILiedAboutCake]

Node server doesn't like being restarted sometimes, due to corruptions in the cache. Removing *.json files from cache folder fixes issues.

Also, on first install, it does not check if the cache folder exists, and will crash until created manually.

undefined:53
25271241420,
^
SyntaxError: Unexpected number
at Object.parse (native)
at Object.me.readFileSync (/srv/OverRustle-API/node_modules/jsonfile/lib/jsonfile.js:31:17)
at Object. (/srv/OverRustle-API/index.js:84:20)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
at node.js:929:3

[hayksaakian]

https://github.com/ILiedAboutCake/OverRustle-API/blob/master/index.js#L87 is supposed to write the file when it doesn't exist. so either the check to see if it exists doesn't work like we want, or the write doesn't work like we want.

corrupted files -- i don't know how to detect. i guess best thing we can do is catch the exception, then delete the file and write a clean one.

[ILiedAboutCake]

Should we just clear the cache on restart? As long as the API is not being restarted every minute it should not be a problem no?

repolling endpoints is cheap, and with the server having its own copy of the redis DB, connection loss is no longer a problem.

fs.js:439
return binding.open(pathModule._makeLong(path), stringToFlags(flags), mode);
^
Error: ENOENT, no such file or directory './cache/metadata.json'