examples/knative splitter 'Service.serving.knative.dev \"words\" not found'

[maschmid]

Attemting to run the examples/knative examples on knative for OpenShift

(installed via https://github.com/openshift-cloud-functions/knative-operators/blob/openshift-v0.5.0/etc/scripts/install.sh on OCP 4.1.rc0 on AWS)

the "printer" integration deploys fine,
attempting to add the "splitter" with

kamel run splitter.groovy

from('knative:channel/messages')
  .split().tokenize(" ")
  .log('sending ${body} to words channel')
  .to('knative:channel/words')

the splitter stays in the "Deploying" state, with the following error during splitter Integration reconsiliation:

error during trait customization before deployment: could not retrieve service words in namespace myproject: Service.serving.knative.dev \"words\" not found

(note that the "words" exists as a channel, not as a knative service)

full error:

{"level":"info","ts":1557171498.1958346,"logger":"camel-k.controller.integration","msg":"Reconciling Integration","request-namespace":"myproject","request-name":"splitter"}
{"level":"info","ts":1557171498.1959271,"logger":"camel-k.controller.integration","msg":"Invoking action deploy","request-namespace":"myproject","request-name":"splitter","api-version":"camel.apache.org/v1alpha1","kind":"Integration","ns":"myproject","name":"splitter"}
{"level":"info","ts":1557171498.196114,"logger":"camel-k.trait","msg":"Apply trait: camel"}
{"level":"info","ts":1557171498.1990047,"logger":"camel-k.trait","msg":"Apply trait: gc"}
{"level":"info","ts":1557171498.1997056,"logger":"camel-k.trait","msg":"Apply trait: knative"}
{"level":"error","ts":1557171498.1997898,"logger":"kubebuilder.controller","msg":"Reconciler error","controller":"integration-controller","request":"myproject/splitter","error":"error during trait customization before deployment: could not retrieve service words in namespace myproject: Service.serving.knative.dev \"words\" not found","errorVerbose":"Service.serving.knative.dev \"words\" not found\ncould not retrieve service words in namespace myproject\ngithub.com/apache/camel-k/pkg/util/knative.GetService\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/pkg/util/knative/knative.go:94\ngithub.com/apache/camel-k/pkg/trait.(*knativeTrait).configureEndpoints\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/pkg/trait/knative.go:251\ngithub.com/apache/camel-k/pkg/trait.(*knativeTrait).createConfiguration\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/pkg/trait/knative.go:131\ngithub.com/apache/camel-k/pkg/trait.(*knativeTrait).Apply\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/pkg/trait/knative.go:110\ngithub.com/apache/camel-k/pkg/trait.(*Catalog).apply\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/pkg/trait/trait_catalog.go:222\ngithub.com/apache/camel-k/pkg/trait.Apply\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/pkg/trait/trait.go:49\ngithub.com/apache/camel-k/pkg/controller/integration.(*deployAction).Handle\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/pkg/controller/integration/deploy.go:62\ngithub.com/apache/camel-k/pkg/controller/integration.(*ReconcileIntegration).Reconcile\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/pkg/controller/integration/integration_controller.go:151\ngithub.com/apache/camel-k/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:215\ngithub.com/apache/camel-k/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func1\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:158\ngithub.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait.JitterUntil.func1\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:133\ngithub.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait.JitterUntil\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:134\ngithub.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait.Until\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:88\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:2361\nerror during trait customization before deployment\ngithub.com/apache/camel-k/pkg/trait.Apply\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/pkg/trait/trait.go:50\ngithub.com/apache/camel-k/pkg/controller/integration.(*deployAction).Handle\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/pkg/controller/integration/deploy.go:62\ngithub.com/apache/camel-k/pkg/controller/integration.(*ReconcileIntegration).Reconcile\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/pkg/controller/integration/integration_controller.go:151\ngithub.com/apache/camel-k/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:215\ngithub.com/apache/camel-k/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func1\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:158\ngithub.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait.JitterUntil.func1\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:133\ngithub.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait.JitterUntil\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:134\ngithub.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait.Until\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:88\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:2361","stacktrace":"github.com/apache/camel-k/vendor/github.com/go-logr/zapr.(*zapLogger).Error\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/github.com/go-logr/zapr/zapr.go:128\ngithub.com/apache/camel-k/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:217\ngithub.com/apache/camel-k/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func1\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:158\ngithub.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait.JitterUntil.func1\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:133\ngithub.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait.JitterUntil\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:134\ngithub.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait.Until\n\t/home/nferraro/gopaths/camel-k/src/github.com/apache/camel-k/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:88"}

[nicolaferraro]

Thanks for spotting it. That's a bug introduced probably here:

camel-k/pkg/trait/knative.go

Line 74 in fd48662

if t.EndpointSinks == "" {