This is a binding extension for Azure Functions

The extension supports output bindings and input bindings. For output you can use an IAsyncCollector<EventStoreData> don't forget the using statement using SiaConsulting.Azure.WebJobs.Extensions.EventStoreExtension.Streams.Bindings For input you can use IList<ResolvedEvent> don't forget the using statement using EventStore.ClientAPI

Important: the output binding uses transactions, this means, that the added events will only be flushed, if the function completes successfully

Sample function.json config for input bindig

{
	"type": "eventStoreStreams",
	"name": "eventStore",
	"direction": "in",
	"ConnectionStringSetting": "EventStoreConnection",
	"StreamName": "CobolIstDoofStream",
	"StreamOffset": -1,
	"ReadSize": -1,
	"ResolveLinkTos": false,
	"StreamReadDirection": "Forward"
}

Sample function.json config for output binding

{
	"name": "data",
	"type": "eventStoreStreams",
	"direction": "out",
	"ConnectionStringSetting": "EventStoreConnection",
	"StreamName": "testStream"
}

Version 0.0.4 of this extension is available on nuget.

How to install

1. Create an Function App in the portal
2. Create a new Function within your function app
3. Get your functions url and you masterkey
4. use Postman or Curl to post the following to the extensions endpoint of your function app. If you functions url is https://mycoolfunctionapp.azurewebsites.net/api/HttpTrigger1?code=ABC then your extensions endpoint is https://mycoolfunctionapp.azurewebsites.net/admin/host/extensions?code=ABC

   {
   	"Id":"SiaConsulting.Azure.WebJobs.Extensions.EventStoreExtension.Streams",
   	"Version": "0.0.4"
   }

5. check with the returned jobid, if the job to be completed / the extension is installed https://mycoolfunctionapp.azurewebsites.net/admin/host/extensions/jobs/<JOBID>?code=ABC
6. setup your function.json with all the needed parameters
7. start using the funtion

How to unsintall

There is a problem with uninstalling extensions right now, so the easiest way is to delete the functions app create a new one. If you still want to uninstall the extension, this is how to do it

1. Stop the function app
2. Use Azure-Portal or Azure Storage Explorer to connect to the storage account file shares of your function app
3. Delete EventStore.ClientAPI.NetCore.dll and SiaConsulting.Azure.WebJobs.Extensions.EventStoreExtension.Streams.dll from site/wwwroot/bin
4. Edit extensions.json in site/wwwroot/bin and remove the SiaConsulting.AzureWebJobs.Extensions.EventStoreExtension.Streams-extension from the array
5. Edit extensions.deps.json in site/wwwroot/bin and remove any occurance of EventStore.ClientAPI.NetCore and SiaConsulting.Azure.WebJobs.Extensions.EventStoreExtension.Streams
6. Edit extensions.csproj in site/wwwroot and remove the PackageReference for SiaConsulting.Azure.WebJobs.Extensions.EventStoreExtension.Streams
7. Start your function app