Update event sources

Mentions how to use various event sources / triggers with
OpenFaaS and adds caveats where authors have not yet added
basic-auth support to their trigger connectors.

Signed-off-by: Alex Ellis (VMware) <[email protected]>

Author: alexellis

docs/reference/triggers.md

@@ -6,7 +6,8 @@ The most common use-case is HTTP which acts as a lingua franca between internet-
 
 Looking to trigger a function on a schedule? Have a look at the [Cron page](/reference/cron/) for more information
 
-## HTTP
+## HTTP / webhooks
+
 This is the default, and standard method for interacting with your Functions.
 
 The function URL follows the pattern of:
@@ -17,6 +18,7 @@ https://<gateway URL>:<port>/function/<function name>
 > There is also the ability to execute a function asynchronously by replacing `/function/` with `/async-function/` before the function name
 
 ## CLI
+
 Trigger a function using the `faas-cli` by using the function name
 
 ```
@@ -27,23 +29,42 @@ echo "triggered" | faas-cli invoke figlet
 
 ### Other Event Sources
 
-#### Kafka
+#### Apache Kafka
 
-Connect your function(s) to Kafka topics
+Connect your function(s) to [Apache Kafka](https://kafka.apache.org) topics.
 
 More information in the Incubator repository: [openfaas-incubator/kafka-connector](https://github.com/openfaas-incubator/kafka-connector)
 
+Support is available for OpenFaaS Gateways using Basic Authentication.
+
 #### AWS SNS
 
-Trigger a function from AWS SNS Notifications and Subscriptions
+You can use AWS SNS to trigger functions using AWS SNS Notifications and Subscriptions. This approach can be used to export almost any data-source or event from your Amazon Web Services (AWS) console such as S3 of DynamoDB to an OpenFaaS function.
+
+Find more information in the following repository: [affix/OpenFaaS-SNS](https://github.com/affix/OpenFaaS-SNS)
+
+#### Minio / S3
+
+You can trigger OpenFaaS functions using Minio's webhook or Kafka integration.
+
+* [Minio's webhook integration](https://blog.minio.io/introducing-webhooks-for-minio-e2c3ad26deb2)
+* [Minio's Kafka integration](https://docs.minio.io/docs/minio-bucket-notification-guide.html#apache-kafka)
+
+#### IFTTT
 
-More information in the repository: [affix/OpenFaaS-SNS](https://github.com/affix/OpenFaaS-SNS)
+You can trigger OpenFaaS functions using webhooks sent via the (if this, then that) service.
+
+An example may be triggering a function which forwards Tweets about your brand or project to a given Slack channel. For this combination use the "Twitter search" Applet and have it trigger the "Make a web request" Applet giving the public URL of your OpenFaaS gateway and the receiver function such as https://gw.my-company.com/function/slack-forwarder
+
+See an example of a function built to forward Tweets from IFTTTT to Slack using Golang: [filter-tweets](https://github.com/openfaas-incubator/social-functions/blob/master/filter-tweets/handler.go).
+
+Visit [ifttt.com](https://ifttt.com) to learn more.
 
 #### CloudEvents
 
-CloudEvents is a specification for describing event data in a common way. More information on [CloudEvents](https://cloudevents.io/)
+[CloudEvents](https://cloudevents.io/) is a specification for describing event data in a common way.
 
-Trigger functions from Azure EventGrid with the CloudEvents standard
+Follow this example to learn how to trigger functions using the Azure EventGrid and CloudEvents.
 
 More information in the repository: [johnmccabe/cloudevents-slack-demo](https://github.com/johnmccabe/cloudevents-slack-demo)
 
@@ -53,10 +74,18 @@ Invoke functions using Redis pub/sub and the [Sidekiq model](https://sidekiq.org
 
 View the [sidekiq-connector](https://github.com/affix/sidekiq-connector)
 
+> Note: the Redis connector currently has no support for gateways using Basic Authentication, but [this is being worked on](https://github.com/affix/sidekiq-connector/issues/1) by the author.
+
 #### RabbitMQ (third-party project)
 
 Invoke functions from RabbitMQ topics
 
 More information in the repository: [Templum/rabbitmq-connector](https://github.com/Templum/rabbitmq-connector)
 
 > Note: the RabbitMQ connector currently has no support for gateways using Basic Authentication, but [this is being worked on](https://github.com/Templum/rabbitmq-connector/issues/2) by the author.
+
+
+#### Add your own event source
+
+If you'd like to add an event source which is not listed below you can fork the OpenFaaS event [connector SDK](https://github.com/openfaas-incubator/connector-sdk) which is written in Go and use this to connect your pub/sub topics or message queues to functions in OpenFaaS.
+

docs/tutorials/featured.md

@@ -13,4 +13,6 @@
 
 * [Get storage for your Severless Functions with Minio & Docker](https://blog.alexellis.io/openfaas-storage-for-your-functions/)
 
+* [Micro-tutorial for Redis and Node.js](https://gist.github.com/alexellis/e05a7b573ae22b209f0214d5766ff07e)
+
 There are many more great tutorials and events by our community listed in our main [Community file](https://github.com/openfaas/faas/blob/master/community.md).