This directory includes a sub directory for every Prow component and is where all binary and container images are built. You can find the
main packages here. For details about building the binaries and images see
Prow has a microservice architecture implemented as a collection of container images that run as Kubernetes deployments. A brief description of each service component is provided here.
crierreports on ProwJob status changes. Can be configured to report to gerrit, github, pubsub, slack, etc.
deckpresents a nice view of recent jobs, command and plugin help information, the current status and history of merge automation, and a dashboard for PR authors.
hookis the most important piece. It is a stateless server that listens for GitHub webhooks and dispatches them to the appropriate plugins. Hook's plugins are used to trigger jobs, implement 'slash' commands, post to Slack, and more. See the
prow/pluginsdirectory for more information on plugins.
horologiumtriggers periodic jobs when necessary.
prow-controller-managermanages the job execution and lifecycle for jobs that run in k8s pods. It currently acts as a replacement for
sinkercleans up old jobs and pods.
tidemanages retesting and merging PRs once they meet the configured merge criteria. See its README for more information.
branchprotectorconfigures github branch protection according to a specified policy
exporterexposes metrics about ProwJobs not directly related to a specific Prow component
gerritis a Prow-gerrit adapter for handling CI on gerrit workflows
hmacupdates HMAC tokens, GitHub webhooks and HMAC secrets for the orgs/repos specified in the Prow config file
jenkins-operatoris the controller that manages jobs that run on Jenkins. We moved away from using this component in favor of running all jobs on Kubernetes.
totvends sequential build numbers. Tot is only necessary for integration with automation that expects sequential build numbers. If Tot is not used, Prow automatically generates build numbers that are monotonically increasing, but not sequential.
status-reconcilerensures changes to blocking presubmits in Prow configuration does not cause in-flight GitHub PRs to get stuck
sublisten to Cloud Pub/Sub notification to trigger Prow Jobs.
checkconfigloads and verifies the configuration, useful as a pre-submit.
config-bootstrapperbootstraps a configuration that would be incrementally updated by the
generic-autobumperautomates image version upgrades (e.g. for a Prow deployment) by opening a PR with images changed to their latest version according to a config file.
invitations-accepterapproves all pending GitHub repository invitations
ProwJobsusing Prow configuration.
peribolosmanages GitHub org, team and membership settings according to a config file. Used by kubernetes/org
phainoruns an approximation of a ProwJob on your local workstation
phonysends fake webhooks for testing hook and plugins.
These are small tools that are automatically added to ProwJob pods for jobs that request pod decoration. They are used to transparently provide source code cloning and upload of metadata, logs, and job artifacts to persistent storage. See their README for more information.
The container images in
images are used as base images for Prow components.