mirror of
https://github.com/open-telemetry/opentelemetry-go.git
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c4ba4811a2
* Add semconv/v1.7.0 package Generated from the v1.7.0 release of the specification using the semconvgen tool manually. This also updates the project to use this version of the semconv package. This does not include the prior, and missing, v1.5.0 and v1.6.0 versions of the semconv package. They are planned to be added in a follow-on PR. * Update CHANGELOG.md
109 lines
3.4 KiB
Go
109 lines
3.4 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package resource // import "go.opentelemetry.io/otel/sdk/resource"
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import (
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"context"
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"fmt"
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"os"
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"path/filepath"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/attribute"
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semconv "go.opentelemetry.io/otel/semconv/v1.7.0"
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)
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type (
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// telemetrySDK is a Detector that provides information about
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// the OpenTelemetry SDK used. This Detector is included as a
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// builtin. If these resource attributes are not wanted, use
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// the WithTelemetrySDK(nil) or WithoutBuiltin() options to
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// explicitly disable them.
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telemetrySDK struct{}
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// host is a Detector that provides information about the host
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// being run on. This Detector is included as a builtin. If
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// these resource attributes are not wanted, use the
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// WithHost(nil) or WithoutBuiltin() options to explicitly
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// disable them.
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host struct{}
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stringDetector struct {
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schemaURL string
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K attribute.Key
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F func() (string, error)
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}
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defaultServiceNameDetector struct{}
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)
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var (
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_ Detector = telemetrySDK{}
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_ Detector = host{}
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_ Detector = stringDetector{}
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_ Detector = defaultServiceNameDetector{}
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)
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// Detect returns a *Resource that describes the OpenTelemetry SDK used.
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func (telemetrySDK) Detect(context.Context) (*Resource, error) {
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return NewWithAttributes(
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semconv.SchemaURL,
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semconv.TelemetrySDKNameKey.String("opentelemetry"),
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semconv.TelemetrySDKLanguageKey.String("go"),
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semconv.TelemetrySDKVersionKey.String(otel.Version()),
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), nil
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}
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// Detect returns a *Resource that describes the host being run on.
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func (host) Detect(ctx context.Context) (*Resource, error) {
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return StringDetector(semconv.SchemaURL, semconv.HostNameKey, os.Hostname).Detect(ctx)
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}
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// StringDetector returns a Detector that will produce a *Resource
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// containing the string as a value corresponding to k. The resulting Resource
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// will have the specified schemaURL.
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func StringDetector(schemaURL string, k attribute.Key, f func() (string, error)) Detector {
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return stringDetector{schemaURL: schemaURL, K: k, F: f}
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}
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// Detect returns a *Resource that describes the string as a value
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// corresponding to attribute.Key as well as the specific schemaURL.
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func (sd stringDetector) Detect(ctx context.Context) (*Resource, error) {
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value, err := sd.F()
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if err != nil {
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return nil, fmt.Errorf("%s: %w", string(sd.K), err)
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}
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a := sd.K.String(value)
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if !a.Valid() {
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return nil, fmt.Errorf("invalid attribute: %q -> %q", a.Key, a.Value.Emit())
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}
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return NewWithAttributes(sd.schemaURL, sd.K.String(value)), nil
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}
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// Detect implements Detector
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func (defaultServiceNameDetector) Detect(ctx context.Context) (*Resource, error) {
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return StringDetector(
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semconv.SchemaURL,
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semconv.ServiceNameKey,
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func() (string, error) {
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executable, err := os.Executable()
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if err != nil {
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return "unknown_service:go", nil
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}
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return "unknown_service:" + filepath.Base(executable), nil
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},
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).Detect(ctx)
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}
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