Hi All,
I am trying to add a Background Worker that will be executed according to a schedule, I am using HangFire integration.
Inside this BackgroundWorker I need to get some settings from DB, I am using the Setting infrastructure build into Abp. However, I couldn't seems to get the SettingManager populated and it is always null.
I have followed the Documentation:
I have defined a new namespace: MyApp.Configuration in Core module. Inside this namespace there are 2 new classes, MyAppSettingsProvider and MyAppSettingNames.
Since the Backgound Worker will be used in the Web module I have added the following to WebModule class in the PreInitialize() method:
public override void PreInitialize()
{
//Enable database based localization
// Configuration.Modules.Zero().LanguageManagement.EnableDbLocalization();
Configuration.Localization.Languages.Add(new LanguageInfo("en", "English", "famfamfam-flag-england", true));
.....
Configuration.Settings.Providers.Add<MyAppSettingsProvider>();
Configuration.BackgroundJobs.UseHangfire(configuration =>
{
configuration.GlobalConfiguration.UseSqlServerStorage("Default");
});
}
- I am reading the setting during the constructor of the background worker, but I am getting Null Reference Exception:
public class MyPassiveWorker : PeriodicBackgroundWorkerBase, ISingletonDependency
{
private readonly string _workingPath;
public MyPassiveWorker(AbpTimer timer) : base(timer)
{
_workingPath = SettingManager.GetSettingValue(MyAppSettingNames.FuntionName_WorkingDirectory);
Timer.Period = 60000;
}
I tried to debug into the SettingManager.GetSettingValue.... line and SettingManager is always null. So what am I missing?
Thanks you very much.
Paul
2 Answer(s)
-
0
Hi All,
Ok, I have re-read the documentation page and kinda missed the injecting the ISettingManager to my BackgroundWorker and from the constructor I can then assigned it to the property exposed by BackgroundWorkerBase base class.
However, I read on top of the documentation page that I need to implement ISettingStore before the settings will be read from database. It also talked about Module Zero already implemented this.
So, in my project I am also using Module Zero, then do I need to implement ISettingStore or I can just used the implementation from Module Zero?
Would be great if someone can point me to the right direction.
Thank you very much.
Paul
-
0
Hi,
ISettingStore interface is fully implemented in module zero <a class="postlink" href="https://github.com/aspnetboilerplate/module-zero/blob/1c77cfe842f81170f4ce7e10036c1e8784331dc6/src/Abp.Zero/Configuration/SettingStore.cs">https://github.com/aspnetboilerplate/mo ... ngStore.cs</a>.
You dont have to implement in unless you have a special requirement like storing/reading settings fron another source than a database.
