refactor: migrate from OpenCensus to OpenTelemetry

Replace OpenCensus stats, views, and tags with OpenTelemetry meter,
counters, and attributes for all pipeline run metrics. Update method
signatures to accept context.Context and rewrite tests to use the
OTel SDK ManualReader. Remove the now-unnecessary metricstest helper
package and all OpenCensus vendor dependencies.

Signed-off-by: Zaki Shaikh <zashaikh@redhat.com>

Author: zakisk

cmd/pipelines-as-code-controller/main.go

@@ -38,9 +38,13 @@ func main() {
 
 	loggerConfiguratorOpt := evadapter.WithLoggerConfiguratorConfigMapName(logging.ConfigMapName())
 	loggerConfigurator := evadapter.NewLoggerConfiguratorFromConfigMap(PACControllerLogKey, loggerConfiguratorOpt)
-	copt := evadapter.WithLoggerConfigurator(loggerConfigurator)
+	copts := []evadapter.ConfiguratorOption{
+		evadapter.WithLoggerConfigurator(loggerConfigurator),
+		evadapter.WithObservabilityConfigurator(evadapter.NewObservabilityConfiguratorFromConfigMap()),
+		evadapter.WithCloudEventsStatusReporterConfigurator(evadapter.NewCloudEventsReporterConfiguratorFromConfigMap()),
+	}
 	// put logger configurator to ctx
-	ctx = evadapter.WithConfiguratorOptions(ctx, []evadapter.ConfiguratorOption{copt})
+	ctx = evadapter.WithConfiguratorOptions(ctx, copts)
 
 	ctx = info.StoreNS(ctx, system.Namespace())
 	ctx = info.StoreCurrentControllerName(ctx, run.Info.Controller.Name)

config/305-config-observability.yaml

@@ -21,6 +21,8 @@ metadata:
     app.kubernetes.io/version: "devel"
     app.kubernetes.io/part-of: pipelines-as-code
 data:
+  metrics-protocol: prometheus
+  metrics-endpoint: ":9090"
   _example: |
     ################################
     #                              #
@@ -35,18 +37,17 @@ data:
     # These sample configuration options may be copied out of
     # this example block and unindented to be in the data block
     # to actually change the configuration.
-    # metrics.backend-destination field specifies the system metrics destination.
-    # It supports either prometheus (the default) or stackdriver.
-    # Note: Using Stackdriver will incur additional charges.
-    metrics.backend-destination: prometheus
-    # metrics.stackdriver-project-id field specifies the Stackdriver project ID. This
-    # field is optional. When running on GCE, application default credentials will be
-    # used and metrics will be sent to the cluster's project if this field is
-    # not provided.
-    metrics.stackdriver-project-id: "<your stackdriver project id>"
-    # metrics.allow-stackdriver-custom-metrics indicates whether it is allowed
-    # to send metrics to Stackdriver using "global" resource type and custom
-    # metric type. Setting this flag to "true" could cause extra Stackdriver
-    # charge.  If metrics.backend-destination is not Stackdriver, this is
-    # ignored.
-    metrics.allow-stackdriver-custom-metrics: "false"
+
+    # metrics-protocol specifies the metrics export protocol.
+    # Supported values: "prometheus", "grpc", "http/protobuf", "none".
+    # Default is "none" (metrics disabled).
+    metrics-protocol: prometheus
+
+    # metrics-endpoint specifies the host:port for the metrics server.
+    # For prometheus, this is the listen address (e.g. ":9090").
+    # For grpc/http, this is the collector endpoint.
+    # metrics-endpoint: ""
+
+    # metrics-export-interval specifies how often metrics are exported.
+    # Only applicable for grpc and http/protobuf protocols.
+    # metrics-export-interval: "30s"

config/400-controller.yaml

@@ -89,10 +89,8 @@ spec:
               valueFrom:
                 fieldRef:
                   fieldPath: metadata.namespace
-            - name: K_METRICS_CONFIG
-              value: '{"Domain":"pipelinesascode.tekton.dev/controller","Component":"pac_controller","PrometheusPort":9090,"ConfigMap":{"name":"pipelines-as-code-config-observability"}}'
-            - name: K_TRACING_CONFIG
-              value: '{"backend":"prometheus","debug":"false","sample-rate":"0"}'
+            - name: CONFIG_OBSERVABILITY_NAME
+              value: pipelines-as-code-config-observability
             - name: K_SINK_TIMEOUT
               value: "30"
             - name: PAC_CONTROLLER_LABEL

go.mod

@@ -1,6 +1,6 @@
 module github.com/openshift-pipelines/pipelines-as-code
 
-go 1.25.0
+go 1.25.6
 
 require (
 	codeberg.org/mvdkleijn/forgejo-sdk/forgejo/v3 v3.0.0
@@ -10,7 +10,7 @@ require (
 	github.com/cloudevents/sdk-go/v2 v2.16.2
 	github.com/fvbommel/sortorder v1.1.0
 	github.com/gobwas/glob v0.2.3
-	github.com/google/cel-go v0.26.1
+	github.com/google/cel-go v0.27.0
 	github.com/google/go-cmp v0.7.0
 	github.com/google/go-github/scrape v0.0.0-20260114152324-5458fbc09dc5
 	github.com/google/go-github/v75 v75.0.0
@@ -27,35 +27,42 @@ require (
 	github.com/pkg/errors v0.9.1
 	github.com/spf13/cobra v1.10.2
 	github.com/stretchr/testify v1.11.1
-	github.com/tektoncd/pipeline v1.7.0
+	github.com/tektoncd/pipeline v1.10.0
 	gitlab.com/gitlab-org/api/client-go v1.14.0
-	go.opencensus.io v0.24.0
+	go.opentelemetry.io/otel v1.39.0
+	go.opentelemetry.io/otel/metric v1.39.0
+	go.opentelemetry.io/otel/sdk/metric v1.39.0
 	go.uber.org/zap v1.27.1
 	golang.org/x/exp v0.0.0-20260112195511-716be5621a96
-	golang.org/x/oauth2 v0.34.0
+	golang.org/x/oauth2 v0.35.0
 	golang.org/x/sync v0.19.0
-	golang.org/x/text v0.33.0
+	golang.org/x/text v0.34.0
 	gopkg.in/yaml.v2 v2.4.0
 	gotest.tools/v3 v3.5.2
 	k8s.io/api v0.35.0
 	k8s.io/apimachinery v0.35.0
 	k8s.io/client-go v0.35.0
 	k8s.io/utils v0.0.0-20260108192941-914a6e750570
-	knative.dev/eventing v0.47.0
-	knative.dev/pkg v0.0.0-20260114161248-8c840449eed2
+	knative.dev/eventing v0.47.2
+	knative.dev/pkg v0.0.0-20260120122510-4a022ed9999a
 	sigs.k8s.io/yaml v1.6.0
 )
 
 require (
 	cel.dev/expr v0.25.1 // indirect
 	github.com/42wim/httpsig v1.2.3 // indirect
 	github.com/antlr/antlr4/runtime/Go/antlr v1.4.10 // indirect
+	github.com/cenkalti/backoff/v5 v5.0.3 // indirect
 	github.com/cert-manager/cert-manager v1.19.3 // indirect
+	github.com/cloudevents/sdk-go/observability/opentelemetry/v2 v2.16.1 // indirect
 	github.com/cloudevents/sdk-go/sql/v2 v2.16.2 // indirect
 	github.com/coreos/go-oidc/v3 v3.17.0 // indirect
+	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/fxamacker/cbor/v2 v2.9.0 // indirect
 	github.com/go-jose/go-jose/v3 v3.0.4 // indirect
 	github.com/go-jose/go-jose/v4 v4.1.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/go-logr/zapr v1.3.0 // indirect
 	github.com/go-openapi/errors v0.22.6 // indirect
 	github.com/go-openapi/strfmt v0.25.0 // indirect
 	github.com/go-openapi/swag/cmdutils v0.25.4 // indirect
@@ -71,10 +78,24 @@ require (
 	github.com/go-openapi/swag/yamlutils v0.25.4 // indirect
 	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
 	github.com/oklog/ulid v1.3.1 // indirect
+	github.com/prometheus/otlptranslator v1.0.0 // indirect
 	github.com/rickb777/plural v1.4.7 // indirect
 	github.com/robfig/cron/v3 v3.0.1 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
 	go.mongodb.org/mongo-driver v1.17.7 // indirect
+	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.64.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/runtime v0.64.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.39.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.39.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.39.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.39.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.39.0 // indirect
+	go.opentelemetry.io/otel/exporters/prometheus v0.61.0 // indirect
+	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.39.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.39.0 // indirect
+	go.opentelemetry.io/otel/trace v1.39.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.9.0 // indirect
 	go.uber.org/atomic v1.11.0 // indirect
 	go.yaml.in/yaml/v2 v2.4.3 // indirect
 	go.yaml.in/yaml/v3 v3.0.4 // indirect
@@ -86,18 +107,13 @@ require (
 )
 
 require (
-	contrib.go.opencensus.io/exporter/ocagent v0.7.1-0.20200907061046-05415f1de66d // indirect
-	contrib.go.opencensus.io/exporter/prometheus v0.4.2 // indirect
-	contrib.go.opencensus.io/exporter/zipkin v0.1.2 // indirect
 	github.com/PuerkitoBio/goquery v1.11.0 // indirect
 	github.com/andybalholm/cascadia v1.3.3 // indirect
 	github.com/antlr4-go/antlr/v4 v4.13.1 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/blang/semver/v4 v4.0.0 // indirect
 	github.com/blendle/zapdriver v1.3.1 // indirect
-	github.com/census-instrumentation/opencensus-proto v0.4.1 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
-	github.com/cloudevents/sdk-go/observability/opencensus/v2 v2.16.2 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/davidmz/go-pageant v1.0.2 // indirect
 	github.com/emicklei/go-restful/v3 v3.13.0 // indirect
@@ -108,8 +124,6 @@ require (
 	github.com/go-openapi/jsonreference v0.21.4 // indirect
 	github.com/go-openapi/swag v0.25.4 // indirect
 	github.com/golang-jwt/jwt/v4 v4.5.2
-	github.com/golang/groupcache v0.0.0-20241129210726-2c02b8208cf8 // indirect
-	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/google/gnostic-models v0.7.1 // indirect
 	github.com/google/go-querystring v1.2.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
@@ -126,28 +140,24 @@ require (
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
-	github.com/openzipkin/zipkin-go v0.4.3 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/prometheus/client_golang v1.23.2 // indirect
 	github.com/prometheus/client_model v0.6.2 // indirect
 	github.com/prometheus/common v0.67.5 // indirect
 	github.com/prometheus/procfs v0.19.2 // indirect
-	github.com/prometheus/statsd_exporter v0.28.0 // indirect
 	github.com/rickb777/date v1.22.0 // indirect
 	github.com/spf13/pflag v1.0.10 // indirect
-	github.com/stoewer/go-strcase v1.3.1 // indirect
 	github.com/xlzd/gotp v0.1.0 // indirect
 	go.uber.org/automaxprocs v1.6.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/crypto v0.47.0 // indirect
-	golang.org/x/net v0.49.0 // indirect
-	golang.org/x/sys v0.40.0 // indirect
-	golang.org/x/term v0.39.0
+	golang.org/x/crypto v0.48.0 // indirect
+	golang.org/x/net v0.50.0 // indirect
+	golang.org/x/sys v0.41.0 // indirect
+	golang.org/x/term v0.40.0
 	golang.org/x/time v0.14.0 // indirect
 	gomodules.xyz/jsonpatch/v2 v2.5.0 // indirect
-	google.golang.org/api v0.260.0 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20260114163908-3f89685c29c3
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20260114163908-3f89685c29c3 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20260128011058-8636f8732409
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20260128011058-8636f8732409 // indirect
 	google.golang.org/grpc v1.79.3 // indirect
 	google.golang.org/protobuf v1.36.11
 	gopkg.in/inf.v0 v0.9.1 // indirect
@@ -156,8 +166,3 @@ require (
 	k8s.io/klog/v2 v2.130.1
 	sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 // indirect
 )
-
-replace (
-	knative.dev/eventing => knative.dev/eventing v0.45.0
-	knative.dev/pkg => knative.dev/pkg v0.0.0-20250424013628-d5e74d29daa3
-)