otlp: handle host.ip attribute data type more defensively (#500)

* otlp: handle host.ip attribute data type more defensively

---------

Co-authored-by: Carson Ip <carsonip@users.noreply.github.com>

Author: 1pkg

input/otlp/metadata.go

@@ -194,6 +194,9 @@ func translateResourceMetadata(resource pcommon.Resource, out *modelpb.APMEvent)
 			if out.Host == nil {
 				out.Host = &modelpb.Host{}
 			}
+			if v.Type() != pcommon.ValueTypeSlice {
+				break // switch
+			}
 			slice := v.Slice()
 			result := make([]*modelpb.IP, 0, slice.Len())
 			for i := 0; i < slice.Len(); i++ {

input/otlp/metadata_test.go

@@ -241,6 +241,25 @@ func TestResourceConventions(t *testing.T) {
 				},
 			},
 		},
+		"host_ip_invalid_type": {
+			attrs: map[string]interface{}{
+				"host.name": "host_name",
+				"host.id":   "host_id",
+				"host.type": "host_type",
+				"host.arch": "host_arch",
+				"host.ip":   "10.244.0.1",
+			},
+			expected: &modelpb.APMEvent{
+				Agent:   &defaultAgent,
+				Service: &defaultService,
+				Host: &modelpb.Host{
+					Hostname:     "host_name",
+					Id:           "host_id",
+					Type:         "host_type",
+					Architecture: "host_arch",
+				},
+			},
+		},
 		"device": {
 			attrs: map[string]interface{}{
 				"device.id":               "device_id",