[processor/resourcedetection] Add support for Bare Metal Solution GCP platform (#32985)

**Description:** Add support for Bare Metal Solution platform to the GCP
resourcedetection processor

FYI I had to place the check for gcp.BareMetalSolution before
!metadata.OnGCE() because the latter fails on Bare Metal Solution due to
the absence of a metadata server.

**Link to tracking Issue:**

**Testing:** unit tests updated

**Documentation:**

---------

Co-authored-by: David Ashpole <[email protected]>

Author: AlexBasinov

.chloggen/gcp-bare-metal-solution-detector.yaml

@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# 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: Support GCP Bare Metal Solution in resource detection processor.
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [32985]
+
+# (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:
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []

processor/resourcedetectionprocessor/internal/gcp/gcp.go

@@ -36,6 +36,7 @@ var removeGCPFaasID = featuregate.GlobalRegistry().MustRegister(
 // * Google App Engine (GAE).
 // * Cloud Run.
 // * Cloud Functions.
+// * Bare Metal Solutions (BMS).
 func NewDetector(set processor.CreateSettings, dcfg internal.DetectorConfig) (internal.Detector, error) {
 	cfg := dcfg.(Config)
 	return &detector{
@@ -52,6 +53,18 @@ type detector struct {
 }
 
 func (d *detector) Detect(context.Context) (resource pcommon.Resource, schemaURL string, err error) {
+	if d.detector.CloudPlatform() == gcp.BareMetalSolution {
+		d.rb.SetCloudProvider(conventions.AttributeCloudProviderGCP)
+		errs := d.rb.SetFromCallable(d.rb.SetCloudAccountID, d.detector.BareMetalSolutionProjectID)
+
+		d.rb.SetCloudPlatform("gcp_bare_metal_solution")
+		errs = multierr.Combine(errs,
+			d.rb.SetFromCallable(d.rb.SetHostName, d.detector.BareMetalSolutionInstanceID),
+			d.rb.SetFromCallable(d.rb.SetCloudRegion, d.detector.BareMetalSolutionCloudRegion),
+		)
+		return d.rb.Emit(), conventions.SchemaURL, errs
+	}
+
 	if !metadata.OnGCE() {
 		return pcommon.NewResource(), "", nil
 	}

processor/resourcedetectionprocessor/internal/gcp/gcp_test.go

@@ -363,6 +363,23 @@ func TestDetect(t *testing.T) {
 			},
 			addFaasID: true,
 		},
+		{
+			desc: "Bare Metal Solution",
+			detector: newTestDetector(&fakeGCPDetector{
+				projectID:                       "my-project",
+				cloudPlatform:                   gcp.BareMetalSolution,
+				gcpBareMetalSolutionCloudRegion: "us-central1",
+				gcpBareMetalSolutionInstanceID:  "1472385723456792345",
+				gcpBareMetalSolutionProjectID:   "my-project",
+			}),
+			expectedResource: map[string]any{
+				conventions.AttributeCloudProvider:  conventions.AttributeCloudProviderGCP,
+				conventions.AttributeCloudAccountID: "my-project",
+				conventions.AttributeCloudPlatform:  "gcp_bare_metal_solution",
+				conventions.AttributeCloudRegion:    "us-central1",
+				conventions.AttributeHostName:       "1472385723456792345",
+			},
+		},
 		{
 			desc: "Unknown Platform",
 			detector: newTestDetector(&fakeGCPDetector{
@@ -413,32 +430,35 @@ func newTestDetector(gcpDetector *fakeGCPDetector, opts ...func(*localMetadata.R
 
 // fakeGCPDetector implements gcpDetector and uses fake values.
 type fakeGCPDetector struct {
-	err                       error
-	projectID                 string
-	cloudPlatform             gcp.Platform
-	gkeAvailabilityZone       string
-	gkeRegion                 string
-	gkeClusterName            string
-	gkeHostID                 string
-	faaSName                  string
-	faaSVersion               string
-	faaSID                    string
-	faaSCloudRegion           string
-	appEngineAvailabilityZone string
-	appEngineRegion           string
-	appEngineServiceName      string
-	appEngineServiceVersion   string
-	appEngineServiceInstance  string
-	gceAvailabilityZone       string
-	gceRegion                 string
-	gceHostType               string
-	gceHostID                 string
-	gceHostName               string
-	gceHostNameErr            error
-	gcpCloudRunJobExecution   string
-	gcpCloudRunJobTaskIndex   string
-	gcpGceInstanceName        string
-	gcpGceInstanceHostname    string
+	err                             error
+	projectID                       string
+	cloudPlatform                   gcp.Platform
+	gkeAvailabilityZone             string
+	gkeRegion                       string
+	gkeClusterName                  string
+	gkeHostID                       string
+	faaSName                        string
+	faaSVersion                     string
+	faaSID                          string
+	faaSCloudRegion                 string
+	appEngineAvailabilityZone       string
+	appEngineRegion                 string
+	appEngineServiceName            string
+	appEngineServiceVersion         string
+	appEngineServiceInstance        string
+	gceAvailabilityZone             string
+	gceRegion                       string
+	gceHostType                     string
+	gceHostID                       string
+	gceHostName                     string
+	gceHostNameErr                  error
+	gcpCloudRunJobExecution         string
+	gcpCloudRunJobTaskIndex         string
+	gcpGceInstanceName              string
+	gcpGceInstanceHostname          string
+	gcpBareMetalSolutionInstanceID  string
+	gcpBareMetalSolutionCloudRegion string
+	gcpBareMetalSolutionProjectID   string
 }
 
 func (f *fakeGCPDetector) ProjectID() (string, error) {
@@ -601,3 +621,24 @@ func (f *fakeGCPDetector) GCEInstanceHostname() (string, error) {
 	}
 	return f.gcpGceInstanceHostname, nil
 }
+
+func (f *fakeGCPDetector) BareMetalSolutionInstanceID() (string, error) {
+	if f.err != nil {
+		return "", f.err
+	}
+	return f.gcpBareMetalSolutionInstanceID, nil
+}
+
+func (f *fakeGCPDetector) BareMetalSolutionCloudRegion() (string, error) {
+	if f.err != nil {
+		return "", f.err
+	}
+	return f.gcpBareMetalSolutionCloudRegion, nil
+}
+
+func (f *fakeGCPDetector) BareMetalSolutionProjectID() (string, error) {
+	if f.err != nil {
+		return "", f.err
+	}
+	return f.gcpBareMetalSolutionProjectID, nil
+}

processor/resourcedetectionprocessor/internal/gcp/types.go

@@ -33,4 +33,7 @@ type gcpDetector interface {
 	CloudRunJobTaskIndex() (string, error)
 	GCEInstanceHostname() (string, error)
 	GCEInstanceName() (string, error)
+	BareMetalSolutionInstanceID() (string, error)
+	BareMetalSolutionCloudRegion() (string, error)
+	BareMetalSolutionProjectID() (string, error)
 }