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opentelemetry-go/sdk/resource/builtin_test.go
Tigran Najaryan 46d9687a35
Add Schema URL support to Resource (#1938)
This implements specification requirement:
https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/resource/sdk.md#resource-creation

- Changes `resource.NewWithAttributes` to require a schema URL. The old function
  is still available as `resource.NewSchemaless`. This is a breaking change.
  We want to encourage using schema URL and make it a conscious choice to have a
  resource without schema.

- Merge schema URLs acccording to the spec in resource.Merge.

- Several builtin resource detectors now correctly populate the schema URL.

Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
2021-06-08 09:46:42 -07:00

79 lines
2.1 KiB
Go

// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package resource_test
import (
"context"
"errors"
"fmt"
"testing"
"github.com/stretchr/testify/require"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/sdk/resource"
)
func TestBuiltinStringDetector(t *testing.T) {
E := fmt.Errorf("no K")
res, err := resource.StringDetector("", attribute.Key("K"), func() (string, error) {
return "", E
}).Detect(context.Background())
require.True(t, errors.Is(err, E))
require.NotEqual(t, E, err)
require.Nil(t, res)
}
func TestStringDetectorErrors(t *testing.T) {
tests := []struct {
desc string
s resource.Detector
errContains string
}{
{
desc: "explicit error from func should be returned",
s: resource.StringDetector("", attribute.Key("K"), func() (string, error) {
return "", fmt.Errorf("K-IS-MISSING")
}),
errContains: "K-IS-MISSING",
},
{
desc: "empty key is an invalid",
s: resource.StringDetector("", attribute.Key(""), func() (string, error) {
return "not-empty", nil
}),
errContains: "invalid attribute: \"\" -> \"not-empty\"",
},
}
for _, test := range tests {
res, err := resource.New(
context.Background(),
resource.WithAttributes(attribute.String("A", "B")),
resource.WithDetectors(test.s),
)
require.Error(t, err, test.desc)
require.Contains(t, err.Error(), test.errContains)
require.NotNil(t, res, "resource contains remaining valid entries")
m := map[string]string{}
for _, kv := range res.Attributes() {
m[string(kv.Key)] = kv.Value.Emit()
}
require.EqualValues(t, map[string]string{"A": "B"}, m)
}
}