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feat: Add dockerized event webhook consumer example (#812)
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FROM microsoft/dotnet:2.1-sdk AS build | ||
WORKDIR /App | ||
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# copy csproj and restore as distinct layers | ||
COPY *.sln . | ||
COPY Src/EventWebhook/*.csproj ./Src/EventWebhook/ | ||
COPY Tests/EventWebhook.Tests/*.csproj ./Tests/EventWebhook.Tests/ | ||
RUN dotnet restore | ||
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# copy everything else and build app | ||
COPY Src/EventWebhook/. ./Src/EventWebhook/ | ||
WORKDIR /App/Src/EventWebhook | ||
RUN dotnet publish -c Release -o Out | ||
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FROM microsoft/dotnet:2.1-aspnetcore-runtime AS runtime | ||
WORKDIR /App | ||
COPY --from=build /App/Src/EventWebhook/Out ./ | ||
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RUN echo "ASPNETCORE_URLS=http://0.0.0.0:\$PORT\nDOTNET_RUNNING_IN_CONTAINER=true" > /App/SetupHerokuEnv.sh && chmod +x /App/SetupHerokuEnv.sh | ||
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CMD /bin/bash -c "source /App/SetupHerokuEnv.sh && dotnet EventWebhook.dll" |
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# sendgrid-events-webhook-consumer | ||
This is dockerized SendGrid Event webhook consumer. | ||
# Overview | ||
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SendGrid has an [Event Webhook](https://sendgrid.com/docs/API_Reference/Event_Webhook/event.html) which posts events related to your email activity to a URL of your choice. This is an easily deployable solution that allows for customers to easiy get up and running processing (parse and save) their event webhooks. | ||
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This is docker-based solution which can be deployed on cloud services like Heroku out of the box. | ||
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# Table of Content | ||
- [Prerequisite](#prerequisite) | ||
- [Deploy locally](#deploy_locally) | ||
- [Deploy Heroku](#deploy_heroku) | ||
- [Testing the Source Code](#testing_the_source_code) | ||
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<a name="prerequisite"></a> | ||
## Prerequisite | ||
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Clone the repository | ||
``` | ||
git clone https://github.com/sendgrid/sendgrid-csharp.git | ||
``` | ||
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Move into the clonned repository | ||
``` | ||
cd sendgrid-csharp/examples/eventwebhook/consumer | ||
``` | ||
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Restore the Packages | ||
``` | ||
dotnet restore | ||
``` | ||
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<a name="deploy_locally"></a> | ||
## Deploy locally | ||
Setup your MX records. Depending on your domain name host, you may need to wait up to 48 hours for the settings to propagate. | ||
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Run the Event Webhook Parse listener in your terminal: | ||
``` | ||
git clone https://github.com/sendgrid/sendgrid-csharp.git | ||
cd sendgrid-csharp/examples/eventwebhook/consumer | ||
dotnet restore | ||
dotnet run --project .\Src\EventWebhook\EventWebhook.csproj | ||
``` | ||
Above will start server listening on a random port like below | ||
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In another terminal, use ngrok to allow external access to your machine: | ||
``` | ||
ngrok http PORT_NUMBER | ||
``` | ||
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You can use setup the Event Webhook please refer [this](https://sendgrid.com/docs/API_Reference/Event_Webhook/getting_started_event_webhook.html#-Getting-started) | ||
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<a name="deploy_heroku"></a> | ||
## Deploy to Heroku | ||
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[Create](https://signup.heroku.com/) Heruko account if not already present | ||
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Install the Heroku CLI | ||
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Download and install the [Heroku CLI](https://devcenter.heroku.com/articles/heroku-command-line). | ||
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If you haven't already, log in to your Heroku account and follow the prompts to create a new SSH public key. | ||
``` | ||
$ heroku login | ||
``` | ||
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Now you can sign into Container Registry. | ||
``` | ||
$ heroku container:login | ||
``` | ||
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Create app in heroku | ||
``` | ||
$ heroku apps:create UNIQUE_APP_NAME | ||
``` | ||
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Create docker image | ||
``` | ||
$ docker image -t DOCKER_IMAGE_NAME . | ||
``` | ||
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Push your Docker-based app | ||
Build the Dockerfile in the current directory and push the Docker image. | ||
``` | ||
$ heroku container:push web --app UNIQUE_APP_NAME | ||
``` | ||
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Deploy the changes | ||
Release the newly pushed images to deploy your app. | ||
``` | ||
$ heroku container:release web --app UNIQUE_APP_NAME | ||
``` | ||
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<a name="testing_the_source_code"></a> | ||
## Testing the Source Code | ||
You can get all the test cases inside the `Tests` folder. |
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examples/eventwebhook/consumer/SendGridEventWebhookConsumer.sln
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Microsoft Visual Studio Solution File, Format Version 12.00 | ||
# Visual Studio 15 | ||
VisualStudioVersion = 15.0.26124.0 | ||
MinimumVisualStudioVersion = 15.0.26124.0 | ||
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Src", "Src", "{B08185CF-3F2E-4638-877B-587F5F60CA74}" | ||
EndProject | ||
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EventWebhook", "Src\EventWebhook\EventWebhook.csproj", "{3897C29A-AE26-4FE5-8421-71896EC935C5}" | ||
EndProject | ||
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Tests", "Tests", "{81CAC535-9854-47AD-9D3E-385AC2668C35}" | ||
EndProject | ||
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EventWebhook.Tests", "Tests\EventWebhook.Tests\EventWebhook.Tests.csproj", "{5C6AA0EB-57B7-4E76-804A-70F7A7DF4FC0}" | ||
EndProject | ||
Global | ||
GlobalSection(SolutionConfigurationPlatforms) = preSolution | ||
Debug|Any CPU = Debug|Any CPU | ||
Debug|x64 = Debug|x64 | ||
Debug|x86 = Debug|x86 | ||
Release|Any CPU = Release|Any CPU | ||
Release|x64 = Release|x64 | ||
Release|x86 = Release|x86 | ||
EndGlobalSection | ||
GlobalSection(SolutionProperties) = preSolution | ||
HideSolutionNode = FALSE | ||
EndGlobalSection | ||
GlobalSection(ProjectConfigurationPlatforms) = postSolution | ||
{3897C29A-AE26-4FE5-8421-71896EC935C5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU | ||
{3897C29A-AE26-4FE5-8421-71896EC935C5}.Debug|Any CPU.Build.0 = Debug|Any CPU | ||
{3897C29A-AE26-4FE5-8421-71896EC935C5}.Debug|x64.ActiveCfg = Debug|Any CPU | ||
{3897C29A-AE26-4FE5-8421-71896EC935C5}.Debug|x64.Build.0 = Debug|Any CPU | ||
{3897C29A-AE26-4FE5-8421-71896EC935C5}.Debug|x86.ActiveCfg = Debug|Any CPU | ||
{3897C29A-AE26-4FE5-8421-71896EC935C5}.Debug|x86.Build.0 = Debug|Any CPU | ||
{3897C29A-AE26-4FE5-8421-71896EC935C5}.Release|Any CPU.ActiveCfg = Release|Any CPU | ||
{3897C29A-AE26-4FE5-8421-71896EC935C5}.Release|Any CPU.Build.0 = Release|Any CPU | ||
{3897C29A-AE26-4FE5-8421-71896EC935C5}.Release|x64.ActiveCfg = Release|Any CPU | ||
{3897C29A-AE26-4FE5-8421-71896EC935C5}.Release|x64.Build.0 = Release|Any CPU | ||
{3897C29A-AE26-4FE5-8421-71896EC935C5}.Release|x86.ActiveCfg = Release|Any CPU | ||
{3897C29A-AE26-4FE5-8421-71896EC935C5}.Release|x86.Build.0 = Release|Any CPU | ||
{5C6AA0EB-57B7-4E76-804A-70F7A7DF4FC0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU | ||
{5C6AA0EB-57B7-4E76-804A-70F7A7DF4FC0}.Debug|Any CPU.Build.0 = Debug|Any CPU | ||
{5C6AA0EB-57B7-4E76-804A-70F7A7DF4FC0}.Debug|x64.ActiveCfg = Debug|Any CPU | ||
{5C6AA0EB-57B7-4E76-804A-70F7A7DF4FC0}.Debug|x64.Build.0 = Debug|Any CPU | ||
{5C6AA0EB-57B7-4E76-804A-70F7A7DF4FC0}.Debug|x86.ActiveCfg = Debug|Any CPU | ||
{5C6AA0EB-57B7-4E76-804A-70F7A7DF4FC0}.Debug|x86.Build.0 = Debug|Any CPU | ||
{5C6AA0EB-57B7-4E76-804A-70F7A7DF4FC0}.Release|Any CPU.ActiveCfg = Release|Any CPU | ||
{5C6AA0EB-57B7-4E76-804A-70F7A7DF4FC0}.Release|Any CPU.Build.0 = Release|Any CPU | ||
{5C6AA0EB-57B7-4E76-804A-70F7A7DF4FC0}.Release|x64.ActiveCfg = Release|Any CPU | ||
{5C6AA0EB-57B7-4E76-804A-70F7A7DF4FC0}.Release|x64.Build.0 = Release|Any CPU | ||
{5C6AA0EB-57B7-4E76-804A-70F7A7DF4FC0}.Release|x86.ActiveCfg = Release|Any CPU | ||
{5C6AA0EB-57B7-4E76-804A-70F7A7DF4FC0}.Release|x86.Build.0 = Release|Any CPU | ||
EndGlobalSection | ||
GlobalSection(NestedProjects) = preSolution | ||
{3897C29A-AE26-4FE5-8421-71896EC935C5} = {B08185CF-3F2E-4638-877B-587F5F60CA74} | ||
{5C6AA0EB-57B7-4E76-804A-70F7A7DF4FC0} = {81CAC535-9854-47AD-9D3E-385AC2668C35} | ||
EndGlobalSection | ||
EndGlobal |
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examples/eventwebhook/consumer/Src/EventWebhook/Controllers/EventWebhookController.cs
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using EventWebhook.Models; | ||
using EventWebhook.Parser; | ||
using Microsoft.AspNetCore.Mvc; | ||
using System.Collections.Generic; | ||
using System.Threading.Tasks; | ||
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namespace EventWebhook.Controllers | ||
{ | ||
[Route("/")] | ||
public class EventWebhookController : Controller | ||
{ | ||
/// <summary> | ||
/// GET : Index page | ||
/// </summary> | ||
[Route("")] | ||
public IActionResult Index() | ||
{ | ||
return View(); | ||
} | ||
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/// <summary> | ||
/// POST : Event webhook handler | ||
/// </summary> | ||
/// <returns></returns> | ||
[Route("/events")] | ||
[HttpPost] | ||
public async Task<IActionResult> Events() | ||
{ | ||
IEnumerable<Event> events = await EventParser.ParseAsync(Request.Body); | ||
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return Ok(); | ||
} | ||
} | ||
} |
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examples/eventwebhook/consumer/Src/EventWebhook/Converters/CategoryConverter.cs
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using EventWebhook.Models; | ||
using Newtonsoft.Json; | ||
using System; | ||
using System.Linq; | ||
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namespace EventWebhook.Converters | ||
{ | ||
public class CategoryConverter : JsonConverter | ||
{ | ||
private readonly Type[] _types; | ||
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public CategoryConverter() | ||
{ | ||
_types = new Type[] { typeof(string), typeof(string[]) }; | ||
} | ||
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public override bool CanConvert(Type objectType) | ||
{ | ||
return _types.Any(t => t == objectType); | ||
} | ||
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public override bool CanWrite => true; | ||
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public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer) | ||
{ | ||
if (reader.TokenType == JsonToken.StartArray) | ||
{ | ||
return new Category(serializer.Deserialize<string[]>(reader), JsonToken.StartArray); | ||
} | ||
else | ||
{ | ||
return new Category(new[] { serializer.Deserialize<string>(reader) }, reader.TokenType); | ||
} | ||
} | ||
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public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) | ||
{ | ||
if (value is Category category) | ||
{ | ||
if (category.IsArray) | ||
{ | ||
serializer.Serialize(writer, category); | ||
} else | ||
{ | ||
serializer.Serialize(writer, category.Value[0]); | ||
} | ||
} | ||
} | ||
} | ||
} |
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examples/eventwebhook/consumer/Src/EventWebhook/Converters/UriConverter.cs
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using Newtonsoft.Json; | ||
using System; | ||
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namespace EventWebhook.Converters | ||
{ | ||
public class UriConverter : JsonConverter | ||
{ | ||
public override bool CanConvert(Type objectType) => objectType == typeof(string); | ||
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public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer) | ||
{ | ||
if (reader.TokenType == JsonToken.Null) | ||
{ | ||
return null; | ||
} | ||
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if (reader.TokenType == JsonToken.String) | ||
{ | ||
return new Uri((string)reader.Value); | ||
} | ||
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throw new InvalidOperationException("Invalid Url"); | ||
} | ||
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public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) | ||
{ | ||
if (null == value) | ||
{ | ||
writer.WriteNull(); | ||
return; | ||
} | ||
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if (value is Uri) | ||
{ | ||
writer.WriteValue(((Uri)value).OriginalString); | ||
return; | ||
} | ||
} | ||
} | ||
} |
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examples/eventwebhook/consumer/Src/EventWebhook/EventWebhook.csproj
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<Project Sdk="Microsoft.NET.Sdk.Web"> | ||
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<PropertyGroup> | ||
<TargetFramework>netcoreapp2.1</TargetFramework> | ||
</PropertyGroup> | ||
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<ItemGroup> | ||
<Folder Include="Util\" /> | ||
<Folder Include="wwwroot\" /> | ||
</ItemGroup> | ||
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<ItemGroup> | ||
<PackageReference Include="Microsoft.AspNetCore.App" /> | ||
<PackageReference Include="Microsoft.AspNetCore.Razor.Design" Version="2.1.2" PrivateAssets="All" /> | ||
<PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.1.1" /> | ||
</ItemGroup> | ||
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</Project> |
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examples/eventwebhook/consumer/Src/EventWebhook/Models/BounceEvent.cs
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using Newtonsoft.Json; | ||
using Newtonsoft.Json.Converters; | ||
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namespace EventWebhook.Models | ||
{ | ||
public class BounceEvent : DroppedEvent | ||
{ | ||
[JsonConverter(typeof(StringEnumConverter))] | ||
public BounceEventType BounceType { get; set; } | ||
} | ||
} |
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examples/eventwebhook/consumer/Src/EventWebhook/Models/BounceEventType.cs
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namespace EventWebhook.Models | ||
{ | ||
public enum BounceEventType | ||
{ | ||
Bounce, | ||
Blocked, | ||
Expired | ||
} | ||
} |
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examples/eventwebhook/consumer/Src/EventWebhook/Models/Category.cs
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using Newtonsoft.Json; | ||
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namespace EventWebhook.Models | ||
{ | ||
public class Category | ||
{ | ||
public string[] Value { get; } | ||
private JsonToken _jsonToken; | ||
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public Category(string[] value, JsonToken jsonToken) | ||
{ | ||
Value = value; | ||
_jsonToken = jsonToken; | ||
} | ||
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[JsonIgnore] | ||
public bool IsArray => _jsonToken == JsonToken.StartArray; | ||
} | ||
} |
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examples/eventwebhook/consumer/Src/EventWebhook/Models/ClickEvent.cs
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using EventWebhook.Converters; | ||
using Newtonsoft.Json; | ||
using System; | ||
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namespace EventWebhook.Models | ||
{ | ||
public class ClickEvent : OpenEvent | ||
{ | ||
[JsonConverter(typeof(UriConverter))] | ||
public Uri Url { get; set; } | ||
} | ||
} |
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examples/eventwebhook/consumer/Src/EventWebhook/Models/DeferredEvent.cs
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namespace EventWebhook.Models | ||
{ | ||
public class DeferredEvent : DeliveredEvent | ||
{ | ||
public int Attempt { get; set; } | ||
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} | ||
} |
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examples/eventwebhook/consumer/Src/EventWebhook/Models/DeliveredEvent.cs
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namespace EventWebhook.Models | ||
{ | ||
public class DeliveredEvent : Event | ||
{ | ||
public string Response { get; set; } | ||
} | ||
} |
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