mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2025-03-05 15:05:51 +02:00
be8fb0b4e2
* initial metrics work * rename cumulative to counter * rename bidirectional to nonmonotonic * rename unidirectional to monotonic * rename nonnegative to signed this changes the default semantics a bit - before the change measure could record negative values by default, now it can't. The specification draft currently specifies both NonNegative and Signed, but I think it's a mistake. * rename instrument to descriptor * license * rework measurement values * make measurement value a tagged union * simplify to one kind of metrics * add observers * change some interfaces to match the spec * keep integral measurement separate from floating ones * remove duplicated measurement type * add checking for options * reorder some fields and functions * rename a function to avoid confusion between the Handle type and the Measure type * drop disabled field from descriptor * add back typed API for metrics * make metric options type safe * merge alternatives into a single bool * make value kind name less stuttery * fix observation callback prototype * drop context parameter from NewHandle * drop useless parameter names * make descriptor an opaque struct * use a store helper * handle comment fixes * reword Alternate comment * drop the "any value" metrics * make measurement value simpler * document value stuff * add tests for values * docs * do not panic if there is no span ID in the event
99 lines
2.5 KiB
Go
99 lines
2.5 KiB
Go
// Copyright 2019, 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 sdk
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import (
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"context"
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"math/rand"
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"go.opentelemetry.io/api/core"
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"go.opentelemetry.io/api/key"
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"go.opentelemetry.io/api/trace"
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"go.opentelemetry.io/experimental/streaming/exporter"
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)
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var (
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// TODO These should move somewhere in the api, right?
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ErrorKey = key.New("error")
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SpanIDKey = key.New("span_id")
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TraceIDKey = key.New("trace_id")
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MessageKey = key.New("message")
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)
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func (s *sdk) WithSpan(ctx context.Context, name string, body func(context.Context) error) error {
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// TODO: use runtime/trace.WithRegion for execution sdk support
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// TODO: use runtime/pprof.Do for profile tags support
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ctx, span := s.Start(ctx, name)
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defer span.End()
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if err := body(ctx); err != nil {
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span.SetAttribute(ErrorKey.Bool(true))
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span.AddEvent(ctx, "span error", MessageKey.String(err.Error()))
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return err
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}
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return nil
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}
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func (s *sdk) Start(ctx context.Context, name string, opts ...trace.SpanOption) (context.Context, trace.Span) {
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var child core.SpanContext
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child.SpanID = rand.Uint64()
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o := &trace.SpanOptions{}
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for _, opt := range opts {
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opt(o)
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}
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var parentScope exporter.ScopeID
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if o.Reference.HasTraceID() {
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parentScope.SpanContext = o.Reference.SpanContext
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} else {
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parentScope.SpanContext = trace.CurrentSpan(ctx).SpanContext()
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}
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if parentScope.HasTraceID() {
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parent := parentScope.SpanContext
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child.TraceID.High = parent.TraceID.High
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child.TraceID.Low = parent.TraceID.Low
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} else {
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child.TraceID.High = rand.Uint64()
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child.TraceID.Low = rand.Uint64()
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}
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childScope := exporter.ScopeID{
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SpanContext: child,
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EventID: s.resources,
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}
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span := &span{
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sdk: s,
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initial: exporter.ScopeID{
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SpanContext: child,
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EventID: s.exporter.Record(exporter.Event{
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Time: o.StartTime,
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Type: exporter.START_SPAN,
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Scope: s.exporter.NewScope(childScope, o.Attributes...),
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Context: ctx,
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Parent: parentScope,
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String: name,
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},
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),
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},
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}
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return trace.SetCurrentSpan(ctx, span), span
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}
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