Knative Eventing sources

Event Sources are Kubernetes Custom Resources which provide a mechanism for registering interest in a class of events from a particular software system. Since different event sources may be described by different Custom Resources, this page provides an index of the available source resource types as well as links to installation instructions.

This is a non-exhaustive list of Event sources for Knative.

Inclusion in this list is not an endorsement, nor does it imply any level of support.

Sources

These are sources that are installed as CRDs.

Name Status Support Description
AWS SQS Proof of Concept None Brings AWS Simple Queue Service messages into Knative.
Apache Camel Proof of Concept None Allows to use Apache Camel components for pushing events into Knative.
Apache CouchDB Active Development None Brings Apache CouchDB messages into Knative.
Apache Kafka Proof of Concept None Brings Apache Kafka messages into Knative.
BitBucket Proof of Concept None Registers for events of the specified types on the specified BitBucket organization/repository. Brings those events into Knative.
CloudAuditLogsSource Active Development None Registers for events of the specified types on the specified Google Cloud Audit Logs. Brings those events into Knative.
CloudPubSubSource Active Development None Brings Cloud Pub/Sub messages into Knative.
CloudSchedulerSource Active Development None Create, update, and delete Google Cloud Scheduler Jobs. When those jobs are triggered, receive the event inside Knative.
CloudStorageSource Active Development None Registers for events of the specified types on the specified Google Cloud Storage bucket and optional object prefix. Brings those events into Knative.
Cron Job Replaced by PingSource None Deprecated, replace with PingSource or a CronJob using SinkBinding
GitHub Proof of Concept None Registers for events of the specified types on the specified GitHub organization/repository. Brings those events into Knative.
GitLab Proof of Concept None Registers for events of the specified types on the specified GitLab repository. Brings those events into Knative.
Kubernetes Active Development Knative Brings Kubernetes API server events into Knative.
Ping In development None Uses an in-memory timer to produce events with a fixed payload on a specified cron schedule.
VMware Active Development None Brings vSphere events into Knative.

Meta Sources

These are not directly usable, but make writing a Source much easier.

Name Status Support Description
Auto Container Source Proof of Concept None AutoContainerSource is a controller that allows the Source CRDs without needing a controller. It notices CRDs with a specific label and starts controlling resources of that type. It utilizes Container Source as underlying infrastructure.
Container Source Active Development Knative Given a spec.template with at least a container image specified, ContainerSource will keep a Pod running with the specified image(s). K_SINK (destination address) and KE_CE_OVERRIDES (JSON CloudEvents attributes) environment variables are injected into the running image(s). It is used by multiple other Sources as underlying infrastructure.
Kubebuilder Sample Source Proof of Concept None Kubebuilder SampleSource is a kubebuilder based implementation supporting the Writing an Event Source the Hard Way tutorial.
Sample Source Active Development Knative Used as reference implementation supporting Writing an Event Source from Scratch tutorial.
SinkBinding Active Development Knative SinkBinding provides a framework for injecting K_SINK (destination address) and K_CE_OVERRIDES (JSON cloudevents attributes) environment variables into any Kubernetes resource which has a spec.template that looks like a Pod (aka PodSpecable).

ContainerSource Containers

These are containers intended to be used with ContainerSource.

Name Status Support Description
AWS CodeCommit Supported TriggerMesh Registers for events of the specified types on the specified AWS CodeCommit repository. Brings those events into Knative.
AWS Cognito Supported TriggerMesh Registers for AWS Cognito events. Brings those events into Knative.
AWS DynamoDB Supported TriggerMesh Registers for events of on the specified AWS DynamoDB table. Brings those events into Knative.
AWS Kinesis Supported TriggerMesh Registers for events on the specified AWS Kinesis stream. Brings those events into Knative.
AWS SNS Supported TriggerMesh Registers for events of the specified AWS SNS endpoint. Brings those events into Knative.
AWS SQS Supported TriggerMesh Registers for events of the specified AWS SQS queue. Brings those events into Knative.
FTP / SFTP Proof of concept None Watches for files being uploaded into a FTP/SFTP and generates events for those.
Heartbeat Proof of Concept None Uses an in-memory timer to produce events as the specified interval. Uses AutoContainerSource for underlying infrastructure.
Heartbeats Proof of Concept None Uses an in-memory timer to produce events at the specified interval.
K8s Proof of Concept None Brings Kubernetes cluster events into Knative. Uses AutoContainerSource for underlying infrastructure.
WebSocket Active Development None Opens a WebSocket to the specified source and packages each received message as a Knative event.