https://github.com/mashiike/go-otel-json-exporters
https://github.com/mashiike/go-otel-json-exporters
Last synced: 3 months ago
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- Host: GitHub
- URL: https://github.com/mashiike/go-otel-json-exporters
- Owner: mashiike
- License: mit
- Created: 2024-09-25T06:09:16.000Z (8 months ago)
- Default Branch: main
- Last Pushed: 2024-09-30T09:09:59.000Z (8 months ago)
- Last Synced: 2025-03-09T16:37:23.268Z (3 months ago)
- Language: Go
- Size: 28.3 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
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README
# go-otel-json-exporters
This repository contains a set of OpenTelemetry exporters that output JSON. The exporters are written in Go and are intended to be used with the OpenTelemetry Go SDK.
## Usage
```go
package main
import (
"context"
"fmt"
"log"
"github.com/mashiike/go-otel-json-exporters/otlptracejson"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/sdk/resource"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
"go.opentelemetry.io/otel/trace"
)
func InstallExportPipeline(ctx context.Context) (func(context.Context) error, error) {
exporter, err := otlptracejson.New(ctx, otlptracejson.WithPrettyPrint())
if err != nil {
return nil, fmt.Errorf("creating otlp json exporter: %w", err)
}
tracerProvider := sdktrace.NewTracerProvider(
sdktrace.WithBatcher(exporter),
sdktrace.WithResource(resource.NewWithAttributes(
semconv.SchemaURL,
semconv.ServiceName("go-otlp-json-exporter-example"),
semconv.ServiceVersion("0.0.1"),
)),
)
otel.SetTracerProvider(tracerProvider)
return tracerProvider.Shutdown, nil
}
func main() {
ctx := context.Background()
shutdown, err := InstallExportPipeline(ctx)
if err != nil {
log.Fatal(err)
}
defer func() {
if err := shutdown(ctx); err != nil {
log.Fatal(err)
}
}()
tracer := otel.GetTracerProvider().Tracer(
"github.com/instrumentron",
trace.WithInstrumentationVersion("0.1.0"),
trace.WithSchemaURL(semconv.SchemaURL),
)
add := func(ctx context.Context, x, y int64) int64 {
_, span := tracer.Start(ctx, "Addition")
defer span.End()
return x + y
}
multiply := func(ctx context.Context, x, y int64) int64 {
_, span := tracer.Start(ctx, "Multiplication")
defer span.End()
return x * y
}
ctx, span := tracer.Start(ctx, "Calculation")
defer span.End()
ans := multiply(ctx, 2, 2)
ans = multiply(ctx, ans, 10)
ans = add(ctx, ans, 2)
log.Println("the answer is", ans)
}
```
export to stdout as following:
```json
{
"resourceSpans": [
{
"resource": {
"attributes": [
{
"key": "service.name",
"value": {
"stringValue": "go-otlp-json-exporter-example"
}
},
{
"key": "service.version",
"value": {
"stringValue": "0.0.1"
}
}
]
},
"scopeSpans": [
{
"scope": {
"name": "github.com/instrumentron",
"version": "0.1.0"
},
"spans": [
{
"traceId": "kIhUbvcWbS0zGEIndbzBNw==",
"spanId": "ZdpumOL1uDY=",
"parentSpanId": "9Z+0Ai5UZf4=",
"flags": 256,
"name": "Multiplication",
"kind": "SPAN_KIND_INTERNAL",
"startTimeUnixNano": "1727244736674966000",
"endTimeUnixNano": "1727244736674966500",
"status": {}
},
{
"traceId": "kIhUbvcWbS0zGEIndbzBNw==",
"spanId": "RFSMEkYEda4=",
"parentSpanId": "9Z+0Ai5UZf4=",
"flags": 256,
"name": "Multiplication",
"kind": "SPAN_KIND_INTERNAL",
"startTimeUnixNano": "1727244736674970000",
"endTimeUnixNano": "1727244736674970375",
"status": {}
},
{
"traceId": "kIhUbvcWbS0zGEIndbzBNw==",
"spanId": "jCiV+gi78B8=",
"parentSpanId": "9Z+0Ai5UZf4=",
"flags": 256,
"name": "Addition",
"kind": "SPAN_KIND_INTERNAL",
"startTimeUnixNano": "1727244736674971000",
"endTimeUnixNano": "1727244736674971458",
"status": {}
},
{
"traceId": "kIhUbvcWbS0zGEIndbzBNw==",
"spanId": "9Z+0Ai5UZf4=",
"flags": 256,
"name": "Calculation",
"kind": "SPAN_KIND_INTERNAL",
"startTimeUnixNano": "1727244736674951000",
"endTimeUnixNano": "1727244736675025541",
"status": {}
}
],
"schemaUrl": "https://opentelemetry.io/schemas/1.26.0"
}
],
"schemaUrl": "https://opentelemetry.io/schemas/1.26.0"
}
]
}
```
metrics and logs exporters same as trace exporter.
see details in [otlpmetricjson/example_test.go](./otlpmetricjson/example_test.go) and [otlplogjson/example_test.go](./otlplogjson/example_test.go)
## License
MIT