[processor/resourcedetectionprocessor] support openshift (#16079)

This pr adds openshift support to the resourcedetectionprocessor.
Closes #15694

.chloggen/resourcedetectionprocessor_support_openshift.yaml

@@ -0,0 +1,16 @@
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: resourcedetectionprocessor
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: add openshift support
+
+# One or more tracking issues related to the change
+issues: [15694]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:

.github/CODEOWNERS

@@ -141,6 +141,7 @@ processor/resourcedetectionprocessor/                    @open-telemetry/collect
 processor/resourceprocessor/                             @open-telemetry/collector-contrib-approvers @dmitryax
 processor/resourcedetectionprocessor/internal/azure/     @open-telemetry/collector-contrib-approvers @mx-psi
 processor/resourcedetectionprocessor/internal/heroku/    @open-telemetry/collector-contrib-approvers @atoulme
+processor/resourcedetectionprocessor/internal/openshift/ @open-telemetry/collector-contrib-approvers @frzifus
 processor/routingprocessor/                              @open-telemetry/collector-contrib-approvers @jpkrohling @kovrus
 processor/schemaprocessor/                               @open-telemetry/collector-contrib-approvers @MovieStoreGuy
 processor/servicegraphprocessor/                         @open-telemetry/collector-contrib-approvers @jpkrohling @mapno

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -131,6 +131,7 @@ body:
       - processor/resourcedetection
       - processor/resourcedetection/internal/azure
       - processor/resourcedetection/internal/heroku
+      - processor/resourcedetection/internal/openshift
       - processor/routing
       - processor/schema
       - processor/servicegraph

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -125,6 +125,7 @@ body:
       - processor/resourcedetection
       - processor/resourcedetection/internal/azure
       - processor/resourcedetection/internal/heroku
+      - processor/resourcedetection/internal/openshift
       - processor/routing
       - processor/schema
       - processor/servicegraph

.github/ISSUE_TEMPLATE/other.yaml

@@ -125,6 +125,7 @@ body:
       - processor/resourcedetection
       - processor/resourcedetection/internal/azure
       - processor/resourcedetection/internal/heroku
+      - processor/resourcedetection/internal/openshift
       - processor/routing
       - processor/schema
       - processor/servicegraph

internal/metadataproviders/openshift/metadata.go

@@ -0,0 +1,208 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package openshift // import "github.com/open-telemetry/opentelemetry-collector-contrib/internal/metadataproviders/openshift"
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+)
+
+// Provider gets cluster metadata from Openshift.
+type Provider interface {
+	K8SClusterVersion(context.Context) (string, error)
+	OpenShiftClusterVersion(context.Context) (string, error)
+	Infrastructure(context.Context) (*InfrastructureAPIResponse, error)
+}
+
+// NewProvider creates a new metadata provider.
+func NewProvider(address, token string) Provider {
+	return &openshiftProvider{
+		address: address,
+		token:   token,
+		client:  &http.Client{},
+	}
+}
+
+type openshiftProvider struct {
+	client  *http.Client
+	address string
+	token   string
+}
+
+func (o *openshiftProvider) makeOCPRequest(ctx context.Context, endpoint, target string) (*http.Request, error) {
+	addr := fmt.Sprintf("%s/apis/config.openshift.io/v1/%s/%s/status", o.address, endpoint, target)
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, addr, nil)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", o.token))
+	return req, nil
+}
+
+// OpenShiftClusterVersion requests the ClusterVersion from the openshift api.
+func (o *openshiftProvider) OpenShiftClusterVersion(ctx context.Context) (string, error) {
+	req, err := o.makeOCPRequest(ctx, "clusterversions", "version")
+	if err != nil {
+		return "", err
+	}
+	resp, err := o.client.Do(req)
+	if err != nil {
+		return "", err
+	}
+	res := ocpClusterVersionAPIResponse{}
+	if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
+		return "", err
+	}
+	return res.Status.Desired.Version, nil
+}
+
+// ClusterVersion requests Infrastructure details from the openshift api.
+func (o *openshiftProvider) Infrastructure(ctx context.Context) (*InfrastructureAPIResponse, error) {
+	req, err := o.makeOCPRequest(ctx, "infrastructures", "cluster")
+	if err != nil {
+		return nil, err
+	}
+	resp, err := o.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	res := &InfrastructureAPIResponse{}
+	if err := json.NewDecoder(resp.Body).Decode(res); err != nil {
+		return nil, err
+	}
+
+	return res, nil
+}
+
+// K8SClusterVersion requests the ClusterVersion from the kubernetes api.
+func (o *openshiftProvider) K8SClusterVersion(ctx context.Context) (string, error) {
+	addr := fmt.Sprintf("%s/version", o.address)
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, addr, nil)
+	if err != nil {
+		return "", err
+	}
+	req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", o.token))
+
+	resp, err := o.client.Do(req)
+	if err != nil {
+		return "", err
+	}
+	res := k8sClusterVersionAPIResponse{}
+	if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
+		return "", err
+	}
+	version := res.GitVersion
+	if strings.Contains(version, "+") {
+		version = strings.Split(version, "+")[0]
+	}
+	return version, nil
+}
+
+type ocpClusterVersionAPIResponse struct {
+	Status struct {
+		Desired struct {
+			Version string `json:"version"`
+		} `json:"desired"`
+	} `json:"status"`
+}
+
+// InfrastructureAPIResponse from OpenShift API.
+type InfrastructureAPIResponse struct {
+	Status InfrastructureStatus `json:"status"`
+}
+
+// InfrastructureStatus holds cluster-wide information about Infrastructure.
+// https://docs.openshift.com/container-platform/4.11/rest_api/config_apis/infrastructure-config-openshift-io-v1.html#apisconfig-openshift-iov1infrastructuresnamestatus
+type InfrastructureStatus struct {
+	// ControlPlaneTopology expresses the expectations for operands that normally
+	// run on control nodes. The default is 'HighlyAvailable', which represents
+	// the behavior operators have in a "normal" cluster. The 'SingleReplica' mode
+	// will be used in single-node deployments and the operators should not
+	// configure the operand for highly-available operation The 'External' mode
+	// indicates that the control plane is hosted externally to the cluster and
+	// that its components are not visible within the cluster.
+	ControlPlaneTopology string `json:"controlPlaneTopology"`
+	// InfrastructureName uniquely identifies a cluster with a human friendly
+	// name. Once set it should not be changed. Must be of max length 27 and must
+	// have only alphanumeric or hyphen characters.
+	InfrastructureName string `json:"infrastructureName"`
+	// InfrastructureTopology expresses the expectations for infrastructure
+	// services that do not run on control plane nodes, usually indicated by a
+	// node selector for a role value other than master. The default is
+	// 'HighlyAvailable', which represents the behavior operators have in a
+	// "normal" cluster. The 'SingleReplica' mode will be used in single-node
+	// deployments and the operators should not configure the operand for
+	// highly-available operation.
+	InfrastructureTopology string `json:"infrastructureTopology"`
+	// PlatformStatus holds status information specific to the underlying
+	// infrastructure provider.
+	PlatformStatus InfrastructurePlatformStatus `json:"platformStatus"`
+}
+
+// InfrastructurePlatformStatus reported by the OpenShift API.
+type InfrastructurePlatformStatus struct {
+	Aws       InfrastructureStatusAWS       `json:"aws"`
+	Azure     InfrastructureStatusAzure     `json:"azure"`
+	Baremetal struct{}                      `json:"baremetal"`
+	GCP       InfrastructureStatusGCP       `json:"gcp"`
+	IBMCloud  InfrastructureStatusIBMCloud  `json:"ibmcloud"`
+	OpenStack InfrastructureStatusOpenStack `json:"openstack"`
+	OVirt     struct{}                      `json:"ovirt"`
+	VSphere   struct{}                      `json:"vsphere"`
+	Type      string                        `json:"type"`
+}
+
+// InfrastructureStatusAWS reported by the OpenShift API.
+type InfrastructureStatusAWS struct {
+	// Region holds the default AWS region for new AWS resources created by the
+	// cluster.
+	Region string `json:"region"`
+}
+
+// InfrastructureStatusAzure reported by the OpenShift API.
+type InfrastructureStatusAzure struct {
+	// CloudName is the name of the Azure cloud environment which can be used to
+	// configure the Azure SDK with the appropriate Azure API endpoints. If empty,
+	// the value is equal to AzurePublicCloud.
+	CloudName string `json:"cloudName"`
+}
+
+// InfrastructureStatusGCP reported by the OpenShift API.
+type InfrastructureStatusGCP struct {
+	// Region holds the region for new GCP resources created for the cluster.
+	Region string `json:"region"`
+}
+
+// InfrastructureStatusIBMCloud reported by the OpenShift API.
+type InfrastructureStatusIBMCloud struct {
+	// Location is where the cluster has been deployed.
+	Location string `json:"location"`
+}
+
+// InfrastructureStatusOpenStack reported by the OpenShift API.
+type InfrastructureStatusOpenStack struct {
+	// CloudName is the name of the desired OpenStack cloud in the client
+	// configuration file (clouds.yaml).
+	CloudName string `json:"cloudName"`
+}
+
+// k8sClusterVersionAPIResponse of OpenShift.
+// https://docs.openshift.com/container-platform/4.11/rest_api/config_apis/clusterversion-config-openshift-io-v1.html#apisconfig-openshift-iov1clusterversionsnamestatus
+type k8sClusterVersionAPIResponse struct {
+	GitVersion string `json:"gitVersion"`
+}