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A .NET Rollbar Client for Xamarin Forms, based on the project code Rollbar.NET

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Rollbar.NET

A .NET Rollbar Client for Xamarin Forms, based on the project code Rollbar.NET

Prerequisites

In the Android and iOS projects, install the following package:

  • Json.NET 10.0.3

In all PCL projects where the Rollbar plugin is added, installed the following nuget packages :

  • Json.NET 10.0.3

RollbarConfig

The RollbarConfig object allows you to configure the Rollbar library.

AccessToken
The access token for your project, allows you access to the Rollbar API
Endpoint
The Rollbar API endpoint, defaults to https://api.rollbar.com/api/1/
Environment
Environment name, e.g. `"production"` or `"development"` defaults to `"production"`
Enabled
If set to false, errors will not be sent to Rollbar, defaults to `true`
LogLevel
The default level of the messages sent to Rollbar
Transform
Allows you to specify a transformation function to modify the payload before it is sent to Rollbar
new RollbarConfig
{
    Transform = payload =>
    {
        payload.Data.Person = new Person
        {
            Id = 123,
            Username = "rollbar",
            Email = "user@rollbar.com"
        };
    }
}

Person Data

You can set the current person data with a call to

Rollbar.Current.PersonData(() => new Person
{
    Id = 123,
    Username = "rollbar",
    Email = "user@rollbar.com"
});

and this person will be attached to all future Rollbar calls.

Model Data

You can set the current model with a call to

RollbarDotNet.Data.SetModel("model device");

You can use the nuget plugin Xam.Plugin.DeviceInfo to easily get the model.

Application Version Data

You can set the current application version with a call to

RollbarDotNet.Data.SetAppVersion("application version");

You can use the nuget plugin Plugin.VersionTracking to easily get the application version.

OS Version Data

You can set the current OS version with a call to

RollbarDotNet.Data.SetOSVersion("android version");

You can use the nuget plugin Xam.Plugin.DeviceInfo to easily get the OS version.

Advanced Usage

If you want more control over sending the data to Rollbar, you can fire up a RollbarClient yourself, and make the calls directly. To get started you've got exactly one interesting class to worry about: RollbarPayload. The class and the classes that compose the class cannot be constructed without all mandatory arguments, and mandatory fields cannot be set. Therefore, if you can construct a payload then it is valid for the purposes of sending to Rollbar. To get the JSON to send to Rollbar just call RollbarPayload.ToJson and stick it in the request body.

There are two other particularly interesting classes to worry about: RollbarData and RollbarBody. RollbarData can be filled out as completely or incompletely as you want, except for the Environment ("debug", "production", "test", etc) and and RollbarBody fields. The RollbarBody is where "what you're actually posting to Rollbar" lives. All the other fields on RollbarData answer contextual questions about the bug like "who saw this error" (RollbarPerson), "What HTTP request data can you give me about the error (if it happened during an HTTP Request, of course)" (RollbarRequest), "How severe was the error?" (Level). Anything you see on the rollbar api website can be found in Rollbar.NET.

RollbarBody can be constructed one of 5 ways:

  1. With a class extending from Exception, which will automatically produce a RollbarTrace object, assigning it to the Trace field of the RollbarBody.
  2. With a class extending from AggregateException, which will automatically produce an array of RollbarTrace objects for each inner exception, assigning it to the TraceChain field of RollbarBody.
  3. With an actual array of Exception objects, which will automatically produce an array of RollbarTrace objects for each exception, assigning it to the TraceChain field of RollbarBody.
  4. With a RollbarMessage object, which consists of a string and any additional keys you wish to send along. It will be assigned to the Message field of RollbarBody.
  5. With a string, which should be formatted like an iOS crash report. This library has no way to verify if you've done this correctly, but if you pass in a string it will be wrapped in a dictionary and assigned to the "raw" key and assigned to the CrashReport field of RollbarBody

None of the fields on RollbarBody are updatable, and all null fields in Rollbar.NET are left off of the final JSON payload.

Basic Usage and Examples

Xamarin.Forms Android

Initialize the rollbar plugin in the MainActivity.cs class

[Init other plugins]
...
RollbarDotNet.Droid.Rollbar.Init(new RollbarConfig("SERVER_TOKEN"));
...
LoadApplication(new App());

Xamarin.Forms iOS

Initialize the rollbar plugin in the AppDelegate.cs class

[Init other plugins]
...
RollbarDotNet.iOS.Rollbar.Init(new RollbarConfig("SERVER_TOKEN"));
...
LoadApplication(new App());

Xamarin.Forms PCL

await Rollbar.Current.Report(ex, ErrorLevel.Error);

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A .NET Rollbar Client for Xamarin Forms, based on the project code Rollbar.NET

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