PagerDuty 0.0.1

Trigger, acknowledge, and resolve Alerts and create Changes using the PagerDuty Events API V2.

Prerequisites

• PagerDuty account (the free plan is sufficient)
• Any Microsoft .NET runtime that supports .NET Standard 2.0 or later
  • .NET 5.0 or later
  • .NET Core 2.0 or later
  • .NET Framework 4.6.1 or later

Installation

You can install this library into your project from NuGet Gallery:

• dotnet add package PagerDuty
• Install-Package PagerDuty
• Go to Project › Manage NuGet Packages in Visual Studio and search for PagerDuty

Configuration

1. Create an Integration in PagerDuty and get its Integration Key.
   1. Sign into your PagerDuty account.
   2. Go to Services › Service Directory.
   3. Select an existing Service for which you want to publish events, or create a new Service.
   4. In the Integrations tab of the Service, add a new Integration.
   5. Under Most popular integrations, select Events API V2, then click Add.
   6. Expand the newly-created Integration and copy its Integration Key, which will be used to authorize this library to send Events to the correct Service.
2. Construct a new PagerDuty API client instance in your project, passing your Integration Key as a constructor parameter.

   IPagerDuty pagerDuty = new PagerDuty(integrationKey: "dfca74ebb7450b3e6da3ba6083a323f4");
   

IPagerDuty instances can be reused to send multiple events over the lifetime of your application. You can add one to your dependency injection context and retain it for as long as you like.

HTTP settings

If you need to customize any of the settings for the HTTP connection to PagerDuty's API servers, you may optionally provide a custom HttpClient instance to the IPagerDuty object. This allows you to set a proxy server, TLS settings, concurrent connection count, DNS TTL, and other properties. If you don't set this property, a default HttpClient instance is used instead.

pagerDuty.HttpClient = new HttpClient(new SocketsHttpHandler {
    UseProxy = true,
    Proxy = new WebProxy("10.0.0.2", 8443),
    MaxConnectionsPerServer = 10,
    PooledConnectionLifetime = TimeSpan.FromMinutes(2),
    SslOptions = new SslClientAuthenticationOptions {
        EnabledSslProtocols = SslProtocols.Tls12 | SslProtocols.Tls13
    }
}) {
    Timeout = TimeSpan.FromSeconds(5)
};

Usage

Triggering an Alert

Construct a new TriggerAlert instance with the required severity and summary parameters, and pass it to the IPagerDuty.Send(Alert) method. This returns an AlertResponse once it's been successfully uploaded to PagerDuty.

AlertResponse alertResponse = await pagerDuty.Send(new TriggerAlert(Severity.Error, "Summary"));

In addition to the two required parameters, TriggerAlert also has several optional parameters, all of which you can specify using an object initializer or property assignments.

TriggerAlert trigger = new(Severity.Warning, "Summary of warning") {
    Class = "my class",
    Component = "my component",
    Group = "my group",
    Links = { new Link("https://aldaviva.com", "Aldaviva") },
    Images = { new Image("https://aldaviva.com/avatars/ben.jpg", "https://aldaviva.com", "Ben") },
    CustomDetails = new {
        A = 1,
        B = "2"
    }
};

trigger.Source = "my source";
trigger.Timestamp = DateTimeOffset.Now;
trigger.Client = "My Client";
trigger.ClientUrl = "https://myclient.mycompany.com";

AlertResponse alertResponse = await pagerDuty.Send(trigger);

If a key in your CustomDetails object isn't a valid identifier in C#, for example if it contains spaces, you can also use an IDictionary<string, object>, or any other type that can be serialized into JSON.

trigger.CustomDetails = new Dictionary<string, object> {
    { "key 1", "value 1" },
    { "key 2", "value 2" },
};

Acknowledging an Alert

The value of the required DedupKey constructor parameter comes from an AlertResponse, which is returned when you send a TriggerAlert.

await pagerDuty.Send(new AcknowledgeAlert(alertResponse.DedupKey));

Resolving an Alert

The value of the required DedupKey constructor parameter comes from an AlertResponse, which is returned when you send a TriggerAlert.

await pagerDuty.Send(new ResolveAlert(alertResponse.DedupKey));

Creating a Change

You can also create Changes.

await pagerDuty.Send(new Change("Summary of Change"));

Handling exceptions

All of the exceptions thrown by IPagerDuty.Send inherit from PagerDutyException, so you can catch that superclass, or the more specialized subclasses: NetworkException, BadRequest, RateLimited, and InternalServerError.

try {
    await pagerDuty.Send(new Change("Summary of Change"));
} catch (PagerDutyException e) when (e.RetryAllowedAfterDelay) {
    // try again later
} catch (BadRequest e) {
    Console.WriteLine($"{e.Message} {e.StatusCode} {e.Response}");
} catch (WebApplicationException) {
    // catch-all for unexpected status codes
}

Cleaning up

PagerDuty contains an HttpClient instance, so when you're done with the instance, call Dispose() to clean it up and allow the HttpClient to be garbage collected.

pagerDuty.Dispose();

References

• PagerDuty Knowledge Base
• PagerDuty Events API V2 Documentation
• PagerDuty Events API V2 API Reference