Getting Started

[Charlotte3240]

cannot merge resource due to conflicting Schema URL

func newResource() *resource.Resource {
	r, err := resource.Merge(
		resource.Default(),
		resource.NewWithAttributes(
			"semconv.SchemaURL,",
			semconv.ServiceNameKey.String("DemoService"),
			semconv.ServiceNamespaceKey.String("dev"),
			semconv.ServiceVersionKey.String("v1.0"),
			attribute.String("key", "value"),
		))

	if err != nil {
		log.Println("create resource error:", err)
		return nil
	}
	return r
}

[dmathieu]

Hi,

You're getting this error because both your resources have a schema URL provided.
See the schema URL merge logic.

This happens because you're using an invalid schemaURL (the first argument in NewWithAttributes). You should use semconv.SchemaURL, not "semconv.SchemaURL".

The following merges properly:

package main

import (
	"fmt"
	"log"
	"os"

	"go.opentelemetry.io/otel/attribute"
	"go.opentelemetry.io/otel/sdk/resource"
	semconv "go.opentelemetry.io/otel/semconv/v1.7.0"
)

func main() {
	r := newResource()
	fmt.Fprintf(os.Stdout, "%#v", r)
}

func newResource() *resource.Resource {
	r, err := resource.Merge(
		resource.Default(),
		resource.NewWithAttributes(
			semconv.SchemaURL,
			semconv.ServiceNameKey.String("DemoService"),
			semconv.ServiceNamespaceKey.String("dev"),
			semconv.ServiceVersionKey.String("v1.0"),
			attribute.String("key", "value"),
		))

	if err != nil {
		log.Println("create resource error:", err)
		return nil
	}
	return r
}

[MrAlias]

This comment looks to have addressed the issue. Closing as it looks resolved, please reopen if this was in error.