Can't Load the database about node-json-db

[akashnimare]

@Belphemur Thanks a lot it worked 🎉 .

[Belphemur]

Hello @akashnimare

The problem surely lies here: https://github.com/zulip/zulip-electron/blob/fc5b7324d2dc48849e32dc3404116fde1ecfbcc0/app/main/index.js#L16

By default, JsonDB (well OS in general) will open a file relatively to the working directory. When you're developing it's not a problem at all. However, if the user launching the app doesn't have "write access" to the working directory (usually where the app is installed) the OS is not going to let your write hence the error you're seeing.

Also, I have stricly no idea how the library act in a "browser". You should give it a full path with __dirname since it has not been made to work natively in browser.

[akashnimare]

@Belphemur so is there any way I can make it work. node-json-db is awesome but if I am not able to use in electron then surely I'll have to use some other db 😞 .

[Belphemur]

I'd say, give a full path.

Using https://github.com/electron/electron/blob/master/docs/api/app.md#appgetpathname

And https://discuss.atom.io/t/open-external-file-with-electron/18569/7

You should be able to use the userData path for your database.

[akashnimare]

I can't make it work. I used this but no luck-

const data = db.getData(app.getPath('userData') + '/domain.json');
or
const data = db.getData(app.getAppPath() + '/domain.json');

[Belphemur]

Not when calling the getData. When initializing the database.

https://github.com/zulip/zulip-electron/blob/fc5b7324d2dc48849e32dc3404116fde1ecfbcc0/app/main/index.js#L16

const db = new JsonDB(app.getPath('userData') + '/domain', true, true);

Same at each place you are creating a JsonDB object.

[akashnimare]

@Belphemur hey, I'm getting this error again -

This happens when the db file is empty. Is there any way to handle this?

[akashnimare]

@Belphemur I don't know why but sometimes the db file gets corrupted which results in #21 (comment). Do you know the possible reason behind this?

[Belphemur]

Do you have more than 1 instance of JsonDB on the same database at the same time ? That really the only thing that I can think of that could corrupt the database. These instances would write a the same time on the same file.

…

On 2017-11-02 15:24, Akash Nimare wrote: @Belphemur <https://github.com/belphemur> I don't know why but sometimes the db file gets corrupted which results in #21 (comment) <#21 (comment)>. Do you know the possible reason behind this? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#21 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAMEsp3x3TsE35h-rMx51x9KLUAcjDQQks5syhbcgaJpZM4Ju0kL>.

[akashnimare]

I have only one instance of the db but I do reload the db file sometimes. Here is db file -
https://github.com/zulip/zulip-electron/blob/master/app/renderer/js/utils/domain-util.js
Let me know if you find anything suspicious which might cause this issue. I have no clues here 😭
(FYI only the domain.json file gets corrupted not others like setting.json, window-state.json)