Repository: open-telemetry/opentelemetry-go-contrib (go)

Issue:
config: add support for additional attributes
The Resource model only supports a ServiceName attribute.

https://github.com/open-telemetry/opentelemetry-go-contrib/blob/044e09ac8bfe0d5a60510778017bec57413243d9/config/generated_config.go#L19-L22

This should be updated to support additional attributes as pointed out by @pellared here: https://github.com/open-telemetry/opentelemetry-go-contrib/pull/4824#discussion_r1457142001

Pull request description:
config: add support for additional properties in resource
This allows the configuration of other attributes than service.name. ~I'm using a personal fork of go-jsonschema to test out that the implementation would work for otel-config's use-case~

Support for additional properties is now available in the go-jsonschema library, updated the PR accordingly

Fixes #4828

Patch:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 02cdb36e1..54eb7b3c0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 ### Changed
 
 - Change the scope name for the prometheus bridge to `go.opentelemetry.io/contrib/bridges/prometheus` to match the package. (#5396)
+- Add support for settings additional properties for resource configuration in `go.opentelemetry.io/contrib/config`. (#4832)
 
 ### Fixed
 
diff --git a/config/generated_config.go b/config/generated_config.go
index 68f8a3f9e..64154ee54 100644
--- a/config/generated_config.go
+++ b/config/generated_config.go
@@ -14,11 +14,15 @@ type AttributeLimits struct {
 	// AttributeValueLengthLimit corresponds to the JSON schema field
 	// "attribute_value_length_limit".
 	AttributeValueLengthLimit *int `mapstructure:"attribute_value_length_limit,omitempty"`
+
+	AdditionalProperties interface{}
 }
 
 type Attributes struct {
 	// ServiceName corresponds to the JSON schema field "service.name".
 	ServiceName *string `mapstructure:"service.name,omitempty"`
+
+	AdditionalProperties interface{}
 }
 
 type BatchLogRecordProcessor struct {
@@ -39,6 +43,24 @@ type BatchLogRecordProcessor struct {
 	ScheduleDelay *int `mapstructure:"schedule_delay,omitempty"`
 }
 
+// UnmarshalJSON implements json.Unmarshaler.
+func (j *BatchLogRecordProcessor) UnmarshalJSON(b []byte) error {
+	var raw map[string]interface{}
+	if err := json.Unmarshal(b, &raw); err != nil {
+		return err
+	}
+	if _, ok := raw["exporter"]; raw != nil && !ok {
+		return fmt.Errorf("field exporter in BatchLogRecordProcessor: required")
+	}
+	type Plain BatchLogRecordProcessor
+	var plain Plain
+	if err := json.Unmarshal(b, &plain); err != nil {
+		return err
+	}
+	*j = BatchLogRecordProcessor(plain)
+	return nil
+}
+
 type BatchSpanProcessor struct {
 	// ExportTimeout corresponds to the JSON schema field "export_timeout".
 	ExportTimeout *int `mapstructure:"export_timeout,omitempty"`
@@ -57,6 +79,24 @@ type BatchSpanProcessor struct {
 	ScheduleDelay *int `mapstructure:"schedule_delay,omitempty"`
 }
 
+// UnmarshalJSON implements json.Unmarshaler.
+func (j *BatchSpanProcessor) UnmarshalJSON(b []byte) error {
+	var raw map[string]interface{}
+	if err := json.Unmarshal(b, &raw); err != nil {
+		return err
+	}
+	if _, ok := raw["exporter"]; raw != nil && !ok {
+		return fmt.Errorf("field exporter in BatchSpanProcessor: required")
+	}
+	type Plain BatchSpanProcessor
+	var plain Plain
+	if err := json.Unmarshal(b, &plain); err != nil {
+		return err
+	}
+	*j = BatchSpanProcessor(plain)
+	return nil
+}
+
 type Common map[string]interface{}
 
 type Console map[string]interface{}
@@ -66,6 +106,8 @@ type Headers map[string]string
 type LogRecordExporter struct {
 	// OTLP corresponds to the JSON schema field "otlp".
 	OTLP *OTLP `mapstructure:"otlp,omitempty"`
+
+	AdditionalProperties interface{}
 }
 
 type LogRecordLimits struct {
@@ -84,6 +126,8 @@ type LogRecordProcessor struct {
 
 	// Simple corresponds to the JSON schema field "simple".
 	Simple *SimpleLogRecordProcessor `mapstructure:"simple,omitempty"`
+
+	AdditionalProperties interface{}
 }
 
 type LoggerProvider struct {
@@ -111,6 +155,8 @@ type MetricExporter struct {
 
 	// Prometheus corresponds to the JSON schema field "prometheus".
 	Prometheus *Prometheus `mapstructure:"prometheus,omitempty"`
+
+	AdditionalProperties interface{}
 }
 
 type MetricReader struct {
@@ -186,6 +232,73 @@ type OTLPMetricDefaultHistogramAggregation string
 const OTLPMetricDefaultHistogramAggregationBase2ExponentialBucketHistogram OTLPMetricDefaultHistogramAggregation = "base2_exponential_bucket_histogram"
 const OTLPMetricDefaultHistogramAggregationExplicitBucketHistogram OTLPMetricDefaultHistogramAggregation = "explicit_bucket_histogram"
 
+var enumValues_OTLPMetricDefaultHistogramAggregation = []interface{}{
+	"explicit_bucket_histogram",
+	"base2_exponential_bucket_histogram",
+}
+
+// UnmarshalJSON implements json.Unmarshaler.
+func (j *OTLPMetricDefaultHistogramAggregation) UnmarshalJSON(b []byte) error {
+	var v string
+	if err := json.Unmarshal(b, &v); err != nil {
+		return err
+	}
+	var ok bool
+	for _, expected := range enumValues_OTLPMetricDefaultHistogramAggregation {
+		if reflect.DeepEqual(v, expected) {
+			ok = true
+			break
+		}
+	}
+	if !ok {
+		return fmt.Errorf("invalid value (expected one of %#v): %#v", enumValues_OTLPMetricDefaultHistogramAggregation, v)
+	}
+	*j = OTLPMetricDefaultHistogramAggregation(v)
+	return nil
+}
+
+// UnmarshalJSON implements json.Unmarshaler.
+func (j *OTLPMetric) UnmarshalJSON(b []byte) error {
+	var raw map[string]interface{}
+	if err := json.Unmarshal(b, &raw); err != nil {
+		return err
+	}
+	if _, ok := raw["endpoint"]; raw != nil && !ok {
+		return fmt.Errorf("field endpoint in OTLPMetric: required")
+	}
+	if _, ok := raw["protocol"]; raw != nil && !ok {
+		return fmt.Errorf("field protocol in OTLPMetric: required")
+	}
+	type Plain OTLPMetric
+	var plain Plain
+	if err := json.Unmarshal(b, &plain); err != nil {
+		return err
+	}
+	*j = OTLPMetric(plain)
+	return nil
+}
+
+// UnmarshalJSON implements json.Unmarshaler.
+func (j *OTLP) UnmarshalJSON(b []byte) error {
+	var raw map[string]interface{}
+	if err := json.Unmarshal(b, &raw); err != nil {
+		return err
+	}
+	if _, ok := raw["endpoint"]; raw != nil && !ok {
+		return fmt.Errorf("field endpoint in OTLP: required")
+	}
+	if _, ok := raw["protocol"]; raw != nil && !ok {
+		return fmt.Errorf("field protocol in OTLP: required")
+	}
+	type Plain OTLP
+	var plain Plain
+	if err := json.Unmarshal(b, &plain); err != nil {
+		return err
+	}
+	*j = OTLP(plain)
+	return nil
+}
+
 type OpenTelemetryConfiguration struct {
 	// AttributeLimits corresponds to the JSON schema field "attribute_limits".
 	AttributeLimits *AttributeLimits `mapstructure:"attribute_limits,omitempty"`
@@ -210,6 +323,26 @@ type OpenTelemetryConfiguration struct {
 
 	// TracerProvider corresponds to the JSON schema field "tracer_provider".
 	TracerProvider *TracerProvider `mapstructure:"tracer_provider,omitempty"`
+
+	AdditionalProperties interface{}
+}
+
+// UnmarshalJSON implements json.Unmarshaler.
+func (j *OpenTelemetryConfiguration) UnmarshalJSON(b []byte) error {
+	var raw map[string]interface{}
+	if err := json.Unmarshal(b, &raw); err != nil {
+		return err
+	}
+	if _, ok := raw["file_format"]; raw != nil && !ok {
+		return fmt.Errorf("field file_format in OpenTelemetryConfiguration: required")
+	}
+	type Plain OpenTelemetryConfiguration
+	var plain Plain
+	if err := json.Unmarshal(b, &plain); err != nil {
+		return err
+	}
+	*j = OpenTelemetryConfiguration(plain)
+	return nil
 }
 
 type PeriodicMetricReader struct {
@@ -223,6 +356,24 @@ type PeriodicMetricReader struct {
 	Timeout *int `mapstructure:"timeout,omitempty"`
 }
 
+// UnmarshalJSON implements json.Unmarshaler.
+func (j *PeriodicMetricReader) UnmarshalJSON(b []byte) error {
+	var raw map[string]interface{}
+	if err := json.Unmarshal(b, &raw); err != nil {
+		return err
+	}
+	if _, ok := raw["exporter"]; raw != nil && !ok {
+		return fmt.Errorf("field exporter in PeriodicMetricReader: required")
+	}
+	type Plain PeriodicMetricReader
+	var plain Plain
+	if err := json.Unmarshal(b, &plain); err != nil {
+		return err
+	}
+	*j = PeriodicMetricReader(plain)
+	return nil
+}
+
 type Prometheus struct {
 	// Host corresponds to the JSON schema field "host".
 	Host *string `mapstructure:"host,omitempty"`
@@ -243,6 +394,8 @@ type Prometheus struct {
 type Propagator struct {
 	// Composite corresponds to the JSON schema field "composite".
 	Composite []string `mapstructure:"composite,omitempty"`
+
+	AdditionalProperties interface{}
 }
 
 type PullMetricReader struct {
@@ -250,6 +403,24 @@ type PullMetricReader struct {
 	Exporter MetricExporter `mapstructure:"exporter"`
 }
 
+// UnmarshalJSON implements json.Unmarshaler.
+func (j *PullMetricReader) UnmarshalJSON(b []byte) error {
+	var raw map[string]interface{}
+	if err := json.Unmarshal(b, &raw); err != nil {
+		return err
+	}
+	if _, ok := raw["exporter"]; raw != nil && !ok {
+		return fmt.Errorf("field exporter in PullMetricReader: required")
+	}
+	type Plain PullMetricReader
+	var plain Plain
+	if err := json.Unmarshal(b, &plain); err != nil {
+		return err
+	}
+	*j = PullMetricReader(plain)
+	return nil
+}
+
 type Resource struct {
 	// Attributes corresponds to the JSON schema field "attributes".
 	Attributes *Attributes `mapstructure:"attributes,omitempty"`
@@ -273,6 +444,8 @@ type Sampler struct {
 
 	// TraceIDRatioBased corresponds to the JSON schema field "trace_id_ratio_based".
 	TraceIDRatioBased *SamplerTraceIDRatioBased `mapstructure:"trace_id_ratio_based,omitempty"`
+
+	AdditionalProperties interface{}
 }
 
 type SamplerAlwaysOff map[string]interface{}
@@ -320,11 +493,47 @@ type SimpleLogRecordProcessor struct {
 	Exporter LogRecordExporter `mapstructure:"exporter"`
 }
 
+// UnmarshalJSON implements json.Unmarshaler.
+func (j *SimpleLogRecordProcessor) UnmarshalJSON(b []byte) error {
+	var raw map[string]interface{}
+	if err := json.Unmarshal(b, &raw); err != nil {
+		return err
+	}
+	if _, ok := raw["exporter"]; raw != nil && !ok {
+		return fmt.Errorf("field exporter in SimpleLogRecordProcessor: required")
+	}
+	type Plain SimpleLogRecordProcessor
+	var plain Plain
+	if err := json.Unmarshal(b, &plain); err != nil {
+		return err
+	}
+	*j = SimpleLogRecordProcessor(plain)
+	return nil
+}
+
 type SimpleSpanProcessor struct {
 	// Exporter corresponds to the JSON schema field "exporter".
 	Exporter SpanExporter `mapstructure:"exporter"`
 }
 
+// UnmarshalJSON implements json.Unmarshaler.
+func (j *SimpleSpanProcessor) UnmarshalJSON(b []byte) error {
+	var raw map[string]interface{}
+	if err := json.Unmarshal(b, &raw); err != nil {
+		return err
+	}
+	if _, ok := raw["exporter"]; raw != nil && !ok {
+		return fmt.Errorf("field exporter in SimpleSpanProcessor: required")
+	}
+	type Plain SimpleSpanProcessor
+	var plain Plain
+	if err := json.Unmarshal(b, &plain); err != nil {
+		return err
+	}
+	*j = SimpleSpanProcessor(plain)
+	return nil
+}
+
 type SpanExporter struct {
 	// Console corresponds to the JSON schema field "console".
 	Console Console `mapstructure:"console,omitempty"`
@@ -334,6 +543,8 @@ type SpanExporter struct {
 
 	// Zipkin corresponds to the JSON schema field "zipkin".
 	Zipkin *Zipkin `mapstructure:"zipkin,omitempty"`
+
+	AdditionalProperties interface{}
 }
 
 type SpanLimits struct {
@@ -366,6 +577,8 @@ type SpanProcessor struct {
 
 	// Simple corresponds to the JSON schema field "simple".
 	Simple *SimpleSpanProcessor `mapstructure:"simple,omitempty"`
+
+	AdditionalProperties interface{}
 }
 
 type TracerProvider struct {
@@ -416,6 +629,35 @@ const ViewSelectorInstrumentTypeObservableGauge ViewSelectorInstrumentType = "ob
 const ViewSelectorInstrumentTypeObservableUpDownCounter ViewSelectorInstrumentType = "observable_up_down_counter"
 const ViewSelectorInstrumentTypeUpDownCounter ViewSelectorInstrumentType = "up_down_counter"
 
+var enumValues_ViewSelectorInstrumentType = []interface{}{
+	"counter",
+	"histogram",
+	"observable_counter",
+	"observable_gauge",
+	"observable_up_down_counter",
+	"up_down_counter",
+}
+
+// UnmarshalJSON implements json.Unmarshaler.
+func (j *ViewSelectorInstrumentType) UnmarshalJSON(b []byte) error {
+	var v string
+	if err := json.Unmarshal(b, &v); err != nil {
+		return err
+	}
+	var ok bool
+	for _, expected := range enumValues_ViewSelectorInstrumentType {
+		if reflect.DeepEqual(v, expected) {
+			ok = true
+			break
+		}
+	}
+	if !ok {
+		return fmt.Errorf("invalid value (expected one of %#v): %#v", enumValues_ViewSelectorInstrumentType, v)
+	}
+	*j = ViewSelectorInstrumentType(v)
+	return nil
+}
+
 type ViewStream struct {
 	// Aggregation corresponds to the JSON schema field "aggregation".
 	Aggregation *ViewStreamAggregation `mapstructure:"aggregation,omitempty"`
@@ -487,159 +729,13 @@ type Zipkin struct {
 	Timeout *int `mapstructure:"timeout,omitempty"`
 }
 
-var enumValues_OTLPMetricDefaultHistogramAggregation = []interface{}{
-	"explicit_bucket_histogram",
-	"base2_exponential_bucket_histogram",
-}
-var enumValues_ViewSelectorInstrumentType = []interface{}{
-	"counter",
-	"histogram",
-	"observable_counter",
-	"observable_gauge",
-	"observable_up_down_counter",
-	"up_down_counter",
-}
-
-// UnmarshalJSON implements json.Unmarshaler.
-func (j *ViewSelectorInstrumentType) UnmarshalJSON(b []byte) error {
-	var v string
-	if err := json.Unmarshal(b, &v); err != nil {
-		return err
-	}
-	var ok bool
-	for _, expected := range enumValues_ViewSelectorInstrumentType {
-		if reflect.DeepEqual(v, expected) {
-			ok = true
-			break
-		}
-	}
-	if !ok {
-		return fmt.Errorf("invalid value (expected one of %#v): %#v", enumValues_ViewSelectorInstrumentType, v)
-	}
-	*j = ViewSelectorInstrumentType(v)
-	return nil
-}
-
-// UnmarshalJSON implements json.Unmarshaler.
-func (j *BatchSpanProcessor) UnmarshalJSON(b []byte) error {
-	var raw map[string]interface{}
-	if err := json.Unmarshal(b, &raw); err != nil {
-		return err
-	}
-	if v, ok := raw["exporter"]; !ok || v == nil {
-		return fmt.Errorf("field exporter in BatchSpanProcessor: required")
-	}
-	type Plain BatchSpanProcessor
-	var plain Plain
-	if err := json.Unmarshal(b, &plain); err != nil {
-		return err
-	}
-	*j = BatchSpanProcessor(plain)
-	return nil
-}
-
-// UnmarshalJSON implements json.Unmarshaler.
-func (j *PullMetricReader) UnmarshalJSON(b []byte) error {
-	var raw map[string]interface{}
-	if err := json.Unmarshal(b, &raw); err != nil {
-		return err
-	}
-	if v, ok := raw["exporter"]; !ok || v == nil {
-		return fmt.Errorf("field exporter in PullMetricReader: required")
-	}
-	type Plain PullMetricReader
-	var plain Plain
-	if err := json.Unmarshal(b, &plain); err != nil {
-		return err
-	}
-	*j = PullMetricReader(plain)
-	return nil
-}
-
-// UnmarshalJSON implements json.Unmarshaler.
-func (j *PeriodicMetricReader) UnmarshalJSON(b []byte) error {
-	var raw map[string]interface{}
-	if err := json.Unmarshal(b, &raw); err != nil {
-		return err
-	}
-	if v, ok := raw["exporter"]; !ok || v == nil {
-		return fmt.Errorf("field exporter in PeriodicMetricReader: required")
-	}
-	type Plain PeriodicMetricReader
-	var plain Plain
-	if err := json.Unmarshal(b, &plain); err != nil {
-		return err
-	}
-	*j = PeriodicMetricReader(plain)
-	return nil
-}
-
-// UnmarshalJSON implements json.Unmarshaler.
-func (j *OTLPMetric) UnmarshalJSON(b []byte) error {
-	var raw map[string]interface{}
-	if err := json.Unmarshal(b, &raw); err != nil {
-		return err
-	}
-	if v, ok := raw["endpoint"]; !ok || v == nil {
-		return fmt.Errorf("field endpoint in OTLPMetric: required")
-	}
-	if v, ok := raw["protocol"]; !ok || v == nil {
-		return fmt.Errorf("field protocol in OTLPMetric: required")
-	}
-	type Plain OTLPMetric
-	var plain Plain
-	if err := json.Unmarshal(b, &plain); err != nil {
-		return err
-	}
-	*j = OTLPMetric(plain)
-	return nil
-}
-
-// UnmarshalJSON implements json.Unmarshaler.
-func (j *OTLPMetricDefaultHistogramAggregation) UnmarshalJSON(b []byte) error {
-	var v string
-	if err := json.Unmarshal(b, &v); err != nil {
-		return err
-	}
-	var ok bool
-	for _, expected := range enumValues_OTLPMetricDefaultHistogramAggregation {
-		if reflect.DeepEqual(v, expected) {
-			ok = true
-			break
-		}
-	}
-	if !ok {
-		return fmt.Errorf("invalid value (expected one of %#v): %#v", enumValues_OTLPMetricDefaultHistogramAggregation, v)
-	}
-	*j = OTLPMetricDefaultHistogramAggregation(v)
-	return nil
-}
-
-// UnmarshalJSON implements json.Unmarshaler.
-func (j *SimpleSpanProcessor) UnmarshalJSON(b []byte) error {
-	var raw map[string]interface{}
-	if err := json.Unmarshal(b, &raw); err != nil {
-		return err
-	}
-	if v, ok := raw["exporter"]; !ok || v == nil {
-		return fmt.Errorf("field exporter in SimpleSpanProcessor: required")
-	}
-	type Plain SimpleSpanProcessor
-	var plain Plain
-	if err := json.Unmarshal(b, &plain); err != nil {
-		return err
-	}
-	*j = SimpleSpanProcessor(plain)
-	return nil
-}
-
 // UnmarshalJSON implements json.Unmarshaler.
 func (j *Zipkin) UnmarshalJSON(b []byte) error {
 	var raw map[string]interface{}
 	if err := json.Unmarshal(b, &raw); err != nil {
 		return err
 	}
-	if v, ok := raw["endpoint"]; !ok || v == nil {
+	if _, ok := raw["endpoint"]; raw != nil && !ok {
 		return fmt.Errorf("field endpoint in Zipkin: required")
 	}
 	type Plain Zipkin
@@ -650,78 +746,3 @@ func (j *Zipkin) UnmarshalJSON(b []byte) error {
 	*j = Zipkin(plain)
 	return nil
 }
-
-// UnmarshalJSON implements json.Unmarshaler.
-func (j *SimpleLogRecordProcessor) UnmarshalJSON(b []byte) error {
-	var raw map[string]interface{}
-	if err := json.Unmarshal(b, &raw); err != nil {
-		return err
-	}
-	if v, ok := raw["exporter"]; !ok || v == nil {
-		return fmt.Errorf("field exporter in SimpleLogRecordProcessor: required")
-	}
-	type Plain SimpleLogRecordProcessor
-	var plain Plain
-	if err := json.Unmarshal(b, &plain); err != nil {
-		return err
-	}
-	*j = SimpleLogRecordProcessor(plain)
-	return nil
-}
-
-// UnmarshalJSON implements json.Unmarshaler.
-func (j *BatchLogRecordProcessor) UnmarshalJSON(b []byte) error {
-	var raw map[string]interface{}
-	if err := json.Unmarshal(b, &raw); err != nil {
-		return err
-	}
-	if v, ok := raw["exporter"]; !ok || v == nil {
-		return fmt.Errorf("field exporter in BatchLogRecordProcessor: required")
-	}
-	type Plain BatchLogRecordProcessor
-	var plain Plain
-	if err := json.Unmarshal(b, &plain); err != nil {
-		return err
-	}
-	*j = BatchLogRecordProcessor(plain)
-	return nil
-}
-
-// UnmarshalJSON implements json.Unmarshaler.
-func (j *OTLP) UnmarshalJSON(b []byte) error {
-	var raw map[string]interface{}
-	if err := json.Unmarshal(b, &raw); err != nil {
-		return err
-	}
-	if v, ok := raw["endpoint"]; !ok || v == nil {
-		return fmt.Errorf("field endpoint in OTLP: required")
-	}
-	if v, ok := raw["protocol"]; !ok || v == nil {
-		return fmt.Errorf("field protocol in OTLP: required")
-	}
-	type Plain OTLP
-	var plain Plain
-	if err := json.Unmarshal(b, &plain); err != nil {
-		return err
-	}
-	*j = OTLP(plain)
-	return nil
-}
-
-// UnmarshalJSON implements json.Unmarshaler.
-func (j *OpenTelemetryConfiguration) UnmarshalJSON(b []byte) error {
-	var raw map[string]interface{}
-	if err := json.Unmarshal(b, &raw); err != nil {
-		return err
-	}
-	if v, ok := raw["file_format"]; !ok || v == nil {
-		return fmt.Errorf("field file_format in OpenTelemetryConfiguration: required")
-	}
-	type Plain OpenTelemetryConfiguration
-	var plain Plain
-	if err := json.Unmarshal(b, &plain); err != nil {
-		return err
-	}
-	*j = OpenTelemetryConfiguration(plain)
-	return nil
-}
diff --git a/config/resource.go b/config/resource.go
index 6cbc28698..3caeb89e3 100644
--- a/config/resource.go
+++ b/config/resource.go
@@ -4,16 +4,64 @@
 package config // import "go.opentelemetry.io/contrib/config"
 
 import (
+	"fmt"
+
+	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/sdk/resource"
 	semconv "go.opentelemetry.io/otel/semconv/v1.24.0"
 )
 
+func keyVal(k string, v any) attribute.KeyValue {
+	switch val := v.(type) {
+	case bool:
+		return attribute.Bool(k, val)
+	case int64:
+		return attribute.Int64(k, val)
+	case uint64:
+		return attribute.String(k, fmt.Sprintf("%d", val))
+	case float64:
+		return attribute.Float64(k, val)
+	case int8:
+		return attribute.Int64(k, int64(val))
+	case uint8:
+		return attribute.Int64(k, int64(val))
+	case int16:
+		return attribute.Int64(k, int64(val))
+	case uint16:
+		return attribute.Int64(k, int64(val))
+	case int32:
+		return attribute.Int64(k, int64(val))
+	case uint32:
+		return attribute.Int64(k, int64(val))
+	case float32:
+		return attribute.Float64(k, float64(val))
+	case int:
+		return attribute.Int(k, val)
+	case uint:
+		return attribute.String(k, fmt.Sprintf("%d", val))
+	case string:
+		return attribute.String(k, val)
+	default:
+		return attribute.String(k, fmt.Sprint(v))
+	}
+}
+
 func newResource(res *Resource) (*resource.Resource, error) {
 	if res == nil || res.Attributes == nil {
 		return resource.Default(), nil
 	}
+	attrs := []attribute.KeyValue{
+		semconv.ServiceName(*res.Attributes.ServiceName),
+	}
+
+	if props, ok := res.Attributes.AdditionalProperties.(map[string]any); ok {
+		for k, v := range props {
+			attrs = append(attrs, keyVal(k, v))
+		}
+	}
+
 	return resource.Merge(resource.Default(),
 		resource.NewWithAttributes(*res.SchemaUrl,
-			semconv.ServiceName(*res.Attributes.ServiceName),
+			attrs...,
 		))
 }


Test patch:
diff --git a/config/resource_test.go b/config/resource_test.go
index 27a76c73f..f999c1b84 100644
--- a/config/resource_test.go
+++ b/config/resource_test.go
@@ -4,20 +4,45 @@
 package config // import "go.opentelemetry.io/contrib/config"
 
 import (
+	"fmt"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
+	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/sdk/resource"
 	semconv "go.opentelemetry.io/otel/semconv/v1.24.0"
 )
 
+type mockType struct{}
+
 func TestNewResource(t *testing.T) {
 	res, err := resource.Merge(resource.Default(),
 		resource.NewWithAttributes(semconv.SchemaURL,
 			semconv.ServiceName("service-a"),
 		))
+	other := mockType{}
+	require.NoError(t, err)
+	resWithAttrs, err := resource.Merge(resource.Default(),
+		resource.NewWithAttributes(semconv.SchemaURL,
+			semconv.ServiceName("service-a"),
+			attribute.Bool("attr-bool", true),
+			attribute.String("attr-uint64", fmt.Sprintf("%d", 164)),
+			attribute.Int64("attr-int64", int64(-164)),
+			attribute.Float64("attr-float64", float64(64.0)),
+			attribute.Int64("attr-int8", int64(-18)),
+			attribute.Int64("attr-uint8", int64(18)),
+			attribute.Int64("attr-int16", int64(-116)),
+			attribute.Int64("attr-uint16", int64(116)),
+			attribute.Int64("attr-int32", int64(-132)),
+			attribute.Int64("attr-uint32", int64(132)),
+			attribute.Float64("attr-float32", float64(32.0)),
+			attribute.Int64("attr-int", int64(-1)),
+			attribute.String("attr-uint", fmt.Sprintf("%d", 1)),
+			attribute.String("attr-string", "string-val"),
+			attribute.String("attr-default", fmt.Sprintf("%v", other)),
+		))
 	require.NoError(t, err)
 	tests := []struct {
 		name         string
@@ -55,6 +80,33 @@ func TestNewResource(t *testing.T) {
 			},
 			wantResource: res,
 		},
+		{
+			name: "resource-with-additional-attributes-and-schema",
+			config: &Resource{
+				Attributes: &Attributes{
+					ServiceName: ptr("service-a"),
+					AdditionalProperties: map[string]any{
+						"attr-bool":    true,
+						"attr-int64":   int64(-164),
+						"attr-uint64":  uint64(164),
+						"attr-float64": float64(64.0),
+						"attr-int8":    int8(-18),
+						"attr-uint8":   uint8(18),
+						"attr-int16":   int16(-116),
+						"attr-uint16":  uint16(116),
+						"attr-int32":   int32(-132),
+						"attr-uint32":  uint32(132),
+						"attr-float32": float32(32.0),
+						"attr-int":     int(-1),
+						"attr-uint":    uint(1),
+						"attr-string":  "string-val",
+						"attr-default": other,
+					},
+				},
+				SchemaUrl: ptr(semconv.SchemaURL),
+			},
+			wantResource: resWithAttrs,
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
diff --git a/config/trace_test.go b/config/trace_test.go
index de1461342..3c8c9fa2d 100644
--- a/config/trace_test.go
+++ b/config/trace_test.go
@@ -103,7 +103,7 @@ func TestSpanProcessor(t *testing.T) {
 	}{
 		{
 			name:    "no processor",
-			wantErr: errors.New("unsupported span processor type {<nil> <nil>}"),
+			wantErr: errors.New("unsupported span processor type {<nil> <nil> <nil>}"),
 		},
 		{
 			name: "multiple processor types",