[processor/resourcedetection] add host.interface resource attribute to system detector

.chloggen/njain-interface-name.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: processor/resourcedetection
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: add `host.interface` resource attribute to `system` detector
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [39419]
+
+# (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: [user]

internal/metadataproviders/system/metadata.go

@@ -79,12 +79,14 @@ type Provider interface {
 
 	// CPUInfo returns the host's CPU info
 	CPUInfo(ctx context.Context) ([]cpu.InfoStat, error)
-
 	// OSName returns the OS name according to semantic conventions.
 	OSName(ctx context.Context) (string, error)
 
 	// OSBuildID returns the OS build ID according to semantic conventions.
 	OSBuildID(ctx context.Context) (string, error)
+
+	// HostInterfaces returns the host's Interfaces info
+	HostInterfaces() ([]net.Interface, error)
 }
 
 type systemMetadataProvider struct {
@@ -322,3 +324,7 @@ func (p systemMetadataProvider) HostMACs() (macs []net.HardwareAddr, err error)
 func (p systemMetadataProvider) CPUInfo(ctx context.Context) ([]cpu.InfoStat, error) {
 	return cpu.InfoWithContext(ctx)
 }
+
+func (p systemMetadataProvider) HostInterfaces() ([]net.Interface, error) {
+	return net.Interfaces()
+}

processor/resourcedetectionprocessor/internal/system/documentation.md

@@ -16,6 +16,7 @@
 | host.cpu.stepping | The host.cpu.stepping | Any Str | false |
 | host.cpu.vendor.id | The host.cpu.vendor.id | Any Str | false |
 | host.id | The host.id | Any Str | false |
+| host.interface | Network interfaces for the host | Any Slice | false |
 | host.ip | IP addresses for the host | Any Slice | false |
 | host.mac | MAC addresses for the host | Any Slice | false |
 | host.name | The host.name | Any Str | true |

processor/resourcedetectionprocessor/internal/system/internal/metadata/testdata/config.yaml

@@ -17,6 +17,8 @@ all_set:
       enabled: true
     host.id:
       enabled: true
+    host.interface:
+      enabled: true
     host.ip:
       enabled: true
     host.mac:
@@ -51,6 +53,8 @@ none_set:
       enabled: false
     host.id:
       enabled: false
+    host.interface:
+      enabled: false
     host.ip:
       enabled: false
     host.mac:

processor/resourcedetectionprocessor/internal/system/metadata.yaml

@@ -43,6 +43,10 @@ resource_attributes:
     description: MAC addresses for the host
     type: slice
     enabled: false
+  host.interface:
+    description: Network interfaces for the host
+    type: slice
+    enabled: false
   host.cpu.vendor.id:
     description: The host.cpu.vendor.id
     type: string

processor/resourcedetectionprocessor/internal/system/system.go

@@ -120,6 +120,17 @@ func (d *Detector) Detect(ctx context.Context) (resource pcommon.Resource, schem
 		}
 	}
 
+	var hostInterfaceAttribute []any
+	if d.cfg.ResourceAttributes.HostInterface.Enabled {
+		interfaces, errInterfaces := d.provider.HostInterfaces()
+		if errInterfaces != nil {
+			return pcommon.NewResource(), "", fmt.Errorf("failed to get host network interfaces: %w", errInterfaces)
+		}
+		for _, iface := range interfaces {
+			hostInterfaceAttribute = append(hostInterfaceAttribute, iface.Name)
+		}
+	}
+
 	osDescription, err := d.provider.OSDescription(ctx)
 	if err != nil {
 		return pcommon.NewResource(), "", fmt.Errorf("failed getting OS description: %w", err)
@@ -152,6 +163,7 @@ func (d *Detector) Detect(ctx context.Context) (resource pcommon.Resource, schem
 			d.rb.SetHostArch(hostArch)
 			d.rb.SetHostIP(hostIPAttribute)
 			d.rb.SetHostMac(hostMACAttribute)
+			d.rb.SetHostInterface(hostInterfaceAttribute)
 			d.rb.SetOsDescription(osDescription)
 			if d.cfg.ResourceAttributes.OsName.Enabled {
 				if osName, err2 := d.provider.OSName(ctx); err2 == nil {