Wire up self telemetry OTLP export for TargetAllocator

apis/v1alpha1/targetallocator_types.go

@@ -99,4 +99,10 @@ type TargetAllocatorSpec struct {
 	// ReadinessProbe defines the readiness probe configuration for the Target Allocator container.
 	// +optional
 	ReadinessProbe *corev1.Probe `json:"readinessProbe,omitempty"`
+	// Telemetry defines the self-telemetry configuration for the TargetAllocator.
+	// When set, the TargetAllocator exports its own metrics via OTLP in addition
+	// to the Prometheus /metrics endpoint.
+	//
+	// +optional
+	Telemetry v1beta1.TargetAllocatorTelemetry `json:"telemetry,omitempty"`
 }

apis/v1beta1/opentelemetrycollector_types.go

@@ -237,6 +237,12 @@ type TargetAllocatorEmbedded struct {
 	// +kubebuilder:default:="30s"
 	// +kubebuilder:validation:Format:=duration
 	CollectorTargetReloadInterval *metav1.Duration `json:"collectorTargetReloadInterval,omitempty"`
+	// Telemetry defines the self-telemetry configuration for the TargetAllocator.
+	// When set, the TargetAllocator exports its own metrics via OTLP in addition
+	// to the Prometheus /metrics endpoint.
+	//
+	// +optional
+	Telemetry TargetAllocatorTelemetry `json:"telemetry,omitempty"`
 }
 
 // Probe defines the OpenTelemetry's pod probe config.
@@ -315,6 +321,55 @@ type MetricsConfigSpec struct {
 	DisablePrometheusAnnotations bool `json:"disablePrometheusAnnotations,omitempty"`
 }
 
+// TargetAllocatorTelemetry defines the self-telemetry configuration for the TargetAllocator.
+type TargetAllocatorTelemetry struct {
+	// Metrics defines the metrics export settings for the TargetAllocator's own telemetry.
+	// +optional
+	Metrics TargetAllocatorMetricsConfig `json:"metrics,omitempty"`
+}
+
+// TargetAllocatorMetricsConfig holds metric-export settings for the TargetAllocator's own telemetry.
+type TargetAllocatorMetricsConfig struct {
+	// OTLP configures an optional OTLP metric exporter for the TargetAllocator's self-telemetry.
+	// When set, metrics are exported via OTLP in addition to the existing Prometheus /metrics endpoint.
+	// +optional
+	OTLP *TargetAllocatorOTLPConfig `json:"otlp,omitempty"`
+}
+
+// TargetAllocatorOTLPConfig holds connection settings for the TargetAllocator's OTLP self-telemetry exporter.
+type TargetAllocatorOTLPConfig struct {
+	// Endpoint is the OTLP receiver address (e.g. "https://example.com:4318" for HTTP,
+	// "example.com:4317" for gRPC).
+	// +kubebuilder:validation:Required
+	Endpoint string `json:"endpoint"`
+	// Protocol selects the transport: "grpc" (default) or "http".
+	// +optional
+	// +kubebuilder:validation:Enum=grpc;http
+	Protocol string `json:"protocol,omitempty"`
+	// Headers are additional key/value pairs sent with every export request,
+	// e.g. for authentication.
+	// +optional
+	Headers map[string]string `json:"headers,omitempty"`
+	// Insecure disables TLS. Only suitable for local development.
+	// +optional
+	Insecure bool `json:"insecure,omitempty"`
+	// Temporality sets the aggregation temporality for exported metrics.
+	// Valid values are "cumulative" (default), "delta", and "lowmemory".
+	// "delta" exports all instruments as delta; "lowmemory" uses delta for
+	// counters and histograms and cumulative for gauges.
+	// +optional
+	// +kubebuilder:validation:Enum=cumulative;delta;lowmemory
+	Temporality string `json:"temporality,omitempty"`
+	// ExportInterval is the time between two consecutive exports.
+	// Defaults to 60s.
+	// +optional
+	ExportInterval *metav1.Duration `json:"exportInterval,omitempty"`
+	// Timeout is the max duration for a single export attempt.
+	// Defaults to 10s.
+	// +optional
+	Timeout *metav1.Duration `json:"timeout,omitempty"`
+}
+
 // ScaleSubresourceStatus defines the observed state of the OpenTelemetryCollector's
 // scale subresource.
 type ScaleSubresourceStatus struct {

bundle/community/manifests/opentelemetry.io_opentelemetrycollectors.yaml

@@ -8653,6 +8653,40 @@ spec:
                     type: object
                   serviceAccount:
                     type: string
+                  telemetry:
+                    properties:
+                      metrics:
+                        properties:
+                          otlp:
+                            properties:
+                              endpoint:
+                                type: string
+                              exportInterval:
+                                type: string
+                              headers:
+                                additionalProperties:
+                                  type: string
+                                type: object
+                              insecure:
+                                type: boolean
+                              protocol:
+                                enum:
+                                - grpc
+                                - http
+                                type: string
+                              temporality:
+                                enum:
+                                - cumulative
+                                - delta
+                                - lowmemory
+                                type: string
+                              timeout:
+                                type: string
+                            required:
+                            - endpoint
+                            type: object
+                        type: object
+                    type: object
                   tolerations:
                     items:
                       properties:

bundle/community/manifests/opentelemetry.io_targetallocators.yaml

@@ -2921,6 +2921,40 @@ spec:
                 type: string
               shareProcessNamespace:
                 type: boolean
+              telemetry:
+                properties:
+                  metrics:
+                    properties:
+                      otlp:
+                        properties:
+                          endpoint:
+                            type: string
+                          exportInterval:
+                            type: string
+                          headers:
+                            additionalProperties:
+                              type: string
+                            type: object
+                          insecure:
+                            type: boolean
+                          protocol:
+                            enum:
+                            - grpc
+                            - http
+                            type: string
+                          temporality:
+                            enum:
+                            - cumulative
+                            - delta
+                            - lowmemory
+                            type: string
+                          timeout:
+                            type: string
+                        required:
+                        - endpoint
+                        type: object
+                    type: object
+                type: object
               terminationGracePeriodSeconds:
                 format: int64
                 type: integer

bundle/openshift/manifests/opentelemetry.io_opentelemetrycollectors.yaml

@@ -8652,6 +8652,40 @@ spec:
                     type: object
                   serviceAccount:
                     type: string
+                  telemetry:
+                    properties:
+                      metrics:
+                        properties:
+                          otlp:
+                            properties:
+                              endpoint:
+                                type: string
+                              exportInterval:
+                                type: string
+                              headers:
+                                additionalProperties:
+                                  type: string
+                                type: object
+                              insecure:
+                                type: boolean
+                              protocol:
+                                enum:
+                                - grpc
+                                - http
+                                type: string
+                              temporality:
+                                enum:
+                                - cumulative
+                                - delta
+                                - lowmemory
+                                type: string
+                              timeout:
+                                type: string
+                            required:
+                            - endpoint
+                            type: object
+                        type: object
+                    type: object
                   tolerations:
                     items:
                       properties:

bundle/openshift/manifests/opentelemetry.io_targetallocators.yaml

@@ -2921,6 +2921,40 @@ spec:
                 type: string
               shareProcessNamespace:
                 type: boolean
+              telemetry:
+                properties:
+                  metrics:
+                    properties:
+                      otlp:
+                        properties:
+                          endpoint:
+                            type: string
+                          exportInterval:
+                            type: string
+                          headers:
+                            additionalProperties:
+                              type: string
+                            type: object
+                          insecure:
+                            type: boolean
+                          protocol:
+                            enum:
+                            - grpc
+                            - http
+                            type: string
+                          temporality:
+                            enum:
+                            - cumulative
+                            - delta
+                            - lowmemory
+                            type: string
+                          timeout:
+                            type: string
+                        required:
+                        - endpoint
+                        type: object
+                    type: object
+                type: object
               terminationGracePeriodSeconds:
                 format: int64
                 type: integer

cmd/otel-allocator/internal/config/config.go

@@ -71,6 +71,7 @@ type Config struct {
 	FilterStrategy               string                `yaml:"filter_strategy,omitempty"`
 	PrometheusCR                 PrometheusCRConfig    `yaml:"prometheus_cr,omitempty"`
 	HTTPS                        HTTPSServerConfig     `yaml:"https,omitempty"`
+	Telemetry                    TelemetryConfig       `yaml:"telemetry,omitempty"`
 	CollectorNotReadyGracePeriod time.Duration         `yaml:"collector_not_ready_grace_period,omitempty"`
 }
 
@@ -101,6 +102,41 @@ type HTTPSServerConfig struct {
 	TLSKeyFilePath  string `yaml:"tls_key_file_path,omitempty"`
 }
 
+// TelemetryConfig mirrors the collector's service.telemetry structure for the Target Allocator.
+type TelemetryConfig struct {
+	Metrics MetricsConfig `yaml:"metrics,omitempty"`
+}
+
+// MetricsConfig holds metric-export settings for the Target Allocator's own telemetry.
+type MetricsConfig struct {
+	// OTLP configures an optional OTLP metric exporter. When set, metrics are
+	// exported via OTLP in addition to the existing Prometheus /metrics endpoint.
+	OTLP *OTLPExporterConfig `yaml:"otlp,omitempty"`
+}
+
+// OTLPExporterConfig holds connection settings for the OTLP metric exporter.
+type OTLPExporterConfig struct {
+	// Endpoint is the OTLP receiver base URL or address.
+	// For HTTP, provide the base URL without the signal path
+	// (e.g. "https://example.com/api/v2/otlp"); /v1/metrics is appended automatically.
+	// For gRPC, provide host:port (e.g. "example.com:4317").
+	Endpoint string `yaml:"endpoint"`
+	// Protocol selects the transport: "grpc" (default) or "http".
+	Protocol string `yaml:"protocol,omitempty"`
+	// Headers are additional key/value pairs sent with every export request.
+	Headers map[string]string `yaml:"headers,omitempty"`
+	// Insecure disables TLS — only suitable for local development.
+	Insecure bool `yaml:"insecure,omitempty"`
+	// Temporality sets the aggregation temporality: "cumulative" (default), "delta", or "lowmemory".
+	// "delta" exports all instruments as delta; "lowmemory" uses delta for counters and
+	// histograms and cumulative for gauges.
+	Temporality string `yaml:"temporality,omitempty"`
+	// ExportInterval is the time between two consecutive exports (default 60s).
+	ExportInterval time.Duration `yaml:"export_interval,omitempty"`
+	// Timeout is the max duration for a single export attempt (default 10s).
+	Timeout time.Duration `yaml:"timeout,omitempty"`
+}
+
 // StringToModelOrTimeDurationHookFunc returns a DecodeHookFuncType
 // that converts string to time.Duration, which can also be used
 // as model.Duration.