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feat: add command sending intake v2 trace/events using go agent (#7)
* feat: add command sending v2 intake events using agent
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| // Licensed to Elasticsearch B.V. under one or more contributor | ||
| // license agreements. See the NOTICE file distributed with | ||
| // this work for additional information regarding copyright | ||
| // ownership. Elasticsearch B.V. licenses this file to you 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 main | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "flag" | ||
| "fmt" | ||
| "log" | ||
| "math/rand" | ||
| "os" | ||
| "os/signal" | ||
|
|
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| "go.elastic.co/apm/v2" | ||
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| "github.com/elastic/apm-tools/pkg/tracegen" | ||
| ) | ||
|
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| func main() { | ||
| var cfg tracegen.Config | ||
|
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| flag.Float64Var(&cfg.SampleRate, "sample-rate", 1.0, "set the sample rate. allowed value: min: 0.0001, max: 1.000") | ||
| flag.Parse() | ||
|
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| ctx, cancel := signal.NotifyContext(context.Background(), os.Kill, os.Interrupt) | ||
| defer cancel() | ||
| if err := Main(ctx, cfg); err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| } | ||
|
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| func Main(ctx context.Context, cfg tracegen.Config) error { | ||
| uniqueName := suffixString("trace") | ||
| serviceName := "service-" + uniqueName | ||
| tracer, err := apm.NewTracer(serviceName, "0.0.1") | ||
| if err != nil { | ||
| return errors.New("failed to instantiate tracer") | ||
| } | ||
|
|
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| cfg.TraceID = tracegen.NewRandomTraceID() | ||
| err = tracegen.IndexIntakeV2Trace(ctx, cfg, tracer) | ||
|
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| // TODO: call otlp trace gen with given traceID | ||
| return err | ||
| } | ||
|
|
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| func suffixString(s string) string { | ||
| const letter = "abcdefghijklmnopqrstuvwxyz" | ||
| b := make([]byte, 6) | ||
| for i := range b { | ||
| b[i] = letter[rand.Intn(len(letter))] | ||
| } | ||
| return fmt.Sprintf("%s-%s", s, string(b)) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| // Licensed to Elasticsearch B.V. under one or more contributor | ||
| // license agreements. See the NOTICE file distributed with | ||
| // this work for additional information regarding copyright | ||
| // ownership. Elasticsearch B.V. licenses this file to you 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 tracegen contains functions that generate a trace including transaction, | ||
| // span, error, and logs using elastic APM Go agent and opentelemtry-go | ||
| package tracegen | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "fmt" | ||
| "math" | ||
| "time" | ||
|
|
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| "go.elastic.co/apm/v2" | ||
| ) | ||
|
|
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| type Config struct { | ||
| SampleRate float64 | ||
| TraceID apm.TraceID | ||
| } | ||
|
|
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| // IndexIntakeV2Trace generate a trace including a transaction, a span and an error | ||
| func IndexIntakeV2Trace(ctx context.Context, cfg Config, tracer *apm.Tracer) error { | ||
| if cfg.SampleRate < 0.0001 || cfg.SampleRate > 1.0 { | ||
| return errors.New("invalid sample rate provided. allowed value: 0.0001 <= sample-rate <= 1.0") | ||
| } | ||
| cfg.SampleRate = math.Round(cfg.SampleRate*10000) / 10000 | ||
|
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| // set sample rate | ||
| ts := apm.NewTraceState(apm.TraceStateEntry{ | ||
| Key: "es", Value: fmt.Sprintf("s:%.4g", cfg.SampleRate), | ||
| }) | ||
|
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| traceContext := apm.TraceContext{ | ||
| Trace: cfg.TraceID, | ||
| Options: apm.TraceOptions(0).WithRecorded(true), | ||
| State: ts, | ||
| } | ||
|
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| tx := tracer.StartTransactionOptions("parent-tx", "apmtool", apm.TransactionOptions{ | ||
| TraceContext: traceContext, | ||
| }) | ||
|
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| span := tx.StartSpanOptions("parent-span", "apmtool", apm.SpanOptions{ | ||
| Parent: tx.TraceContext(), | ||
| }) | ||
|
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| exit := tx.StartSpanOptions("exit-span", "apmtool", apm.SpanOptions{ | ||
| Parent: span.TraceContext(), | ||
| ExitSpan: true, | ||
| }) | ||
|
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| exit.Context.SetServiceTarget(apm.ServiceTargetSpanContext{ | ||
| Type: "service_type", | ||
| Name: "service_name", | ||
| }) | ||
|
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| exit.Duration = 999 * time.Millisecond | ||
| exit.Outcome = "failure" | ||
|
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| // error | ||
| e := tracer.NewError(errors.New("timeout")) | ||
| e.Culprit = "timeout" | ||
| e.SetSpan(exit) | ||
| e.Send() | ||
| exit.End() | ||
|
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| span.Duration = time.Second | ||
| span.Outcome = "success" | ||
| span.End() | ||
| tx.Duration = 2 * time.Second | ||
| tx.Outcome = "success" | ||
| tx.End() | ||
| tracer.Flush(ctx.Done()) | ||
|
|
||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| // Licensed to Elasticsearch B.V. under one or more contributor | ||
| // license agreements. See the NOTICE file distributed with | ||
| // this work for additional information regarding copyright | ||
| // ownership. Elasticsearch B.V. licenses this file to you 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 tracegen | ||
|
|
||
| import ( | ||
| "encoding/binary" | ||
| "math/rand" | ||
| "time" | ||
|
|
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| "go.elastic.co/apm/v2" | ||
| ) | ||
|
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| // NewRandomTraceID returns randomly generated apm.TraceID | ||
| // which is also compatible with otel's trace.TraceID | ||
| func NewRandomTraceID() apm.TraceID { | ||
| var traceID apm.TraceID | ||
| r := rand.New(rand.NewSource(time.Now().UnixNano())) | ||
| binary.LittleEndian.PutUint64(traceID[:8], r.Uint64()) | ||
| binary.LittleEndian.PutUint64(traceID[8:], r.Uint64()) | ||
| return traceID | ||
| } |