diff options
author | 2023-05-12 14:33:40 +0200 | |
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committer | 2023-05-12 14:33:40 +0200 | |
commit | ec325fee141c1e9757144a0a4094061b56839b78 (patch) | |
tree | 2948ab4ef5702cc8478ab2be841340b946bdb867 /vendor/go.opentelemetry.io/otel/sdk/trace | |
parent | [frogend/bugfix] fix dynamicSpoiler elements (#1771) (diff) | |
download | gotosocial-ec325fee141c1e9757144a0a4094061b56839b78.tar.xz |
[chore] Update a bunch of database dependencies (#1772)
* [chore] Update a bunch of database dependencies
* fix lil thing
Diffstat (limited to 'vendor/go.opentelemetry.io/otel/sdk/trace')
7 files changed, 82 insertions, 40 deletions
diff --git a/vendor/go.opentelemetry.io/otel/sdk/trace/batch_span_processor.go b/vendor/go.opentelemetry.io/otel/sdk/trace/batch_span_processor.go index a2d7db490..43d5b0423 100644 --- a/vendor/go.opentelemetry.io/otel/sdk/trace/batch_span_processor.go +++ b/vendor/go.opentelemetry.io/otel/sdk/trace/batch_span_processor.go @@ -91,7 +91,7 @@ var _ SpanProcessor = (*batchSpanProcessor)(nil) // NewBatchSpanProcessor creates a new SpanProcessor that will send completed // span batches to the exporter with the supplied options. // -// If the exporter is nil, the span processor will preform no action. +// If the exporter is nil, the span processor will perform no action. func NewBatchSpanProcessor(exporter SpanExporter, options ...BatchSpanProcessorOption) SpanProcessor { maxQueueSize := env.BatchSpanProcessorMaxQueueSize(DefaultMaxQueueSize) maxExportBatchSize := env.BatchSpanProcessorMaxExportBatchSize(DefaultMaxExportBatchSize) diff --git a/vendor/go.opentelemetry.io/otel/sdk/trace/provider.go b/vendor/go.opentelemetry.io/otel/sdk/trace/provider.go index 201c17817..0a018c14d 100644 --- a/vendor/go.opentelemetry.io/otel/sdk/trace/provider.go +++ b/vendor/go.opentelemetry.io/otel/sdk/trace/provider.go @@ -75,8 +75,9 @@ func (cfg tracerProviderConfig) MarshalLog() interface{} { type TracerProvider struct { mu sync.Mutex namedTracer map[instrumentation.Scope]*tracer - spanProcessors atomic.Value - isShutdown bool + spanProcessors atomic.Pointer[spanProcessorStates] + + isShutdown atomic.Bool // These fields are not protected by the lock mu. They are assumed to be // immutable after creation of the TracerProvider. @@ -119,11 +120,11 @@ func NewTracerProvider(opts ...TracerProviderOption) *TracerProvider { } global.Info("TracerProvider created", "config", o) - spss := spanProcessorStates{} + spss := make(spanProcessorStates, 0, len(o.processors)) for _, sp := range o.processors { spss = append(spss, newSpanProcessorState(sp)) } - tp.spanProcessors.Store(spss) + tp.spanProcessors.Store(&spss) return tp } @@ -136,10 +137,11 @@ func NewTracerProvider(opts ...TracerProviderOption) *TracerProvider { // // This method is safe to be called concurrently. func (p *TracerProvider) Tracer(name string, opts ...trace.TracerOption) trace.Tracer { + // This check happens before the mutex is acquired to avoid deadlocking if Tracer() is called from within Shutdown(). + if p.isShutdown.Load() { + return trace.NewNoopTracerProvider().Tracer(name, opts...) + } c := trace.NewTracerConfig(opts...) - - p.mu.Lock() - defer p.mu.Unlock() if name == "" { name = defaultTracerName } @@ -148,44 +150,74 @@ func (p *TracerProvider) Tracer(name string, opts ...trace.TracerOption) trace.T Version: c.InstrumentationVersion(), SchemaURL: c.SchemaURL(), } - t, ok := p.namedTracer[is] - if !ok { - t = &tracer{ - provider: p, - instrumentationScope: is, + + t, ok := func() (trace.Tracer, bool) { + p.mu.Lock() + defer p.mu.Unlock() + // Must check the flag after acquiring the mutex to avoid returning a valid tracer if Shutdown() ran + // after the first check above but before we acquired the mutex. + if p.isShutdown.Load() { + return trace.NewNoopTracerProvider().Tracer(name, opts...), true + } + t, ok := p.namedTracer[is] + if !ok { + t = &tracer{ + provider: p, + instrumentationScope: is, + } + p.namedTracer[is] = t } - p.namedTracer[is] = t - global.Info("Tracer created", "name", name, "version", c.InstrumentationVersion(), "schemaURL", c.SchemaURL()) + return t, ok + }() + if !ok { + // This code is outside the mutex to not hold the lock while calling third party logging code: + // - That code may do slow things like I/O, which would prolong the duration the lock is held, + // slowing down all tracing consumers. + // - Logging code may be instrumented with tracing and deadlock because it could try + // acquiring the same non-reentrant mutex. + global.Info("Tracer created", "name", name, "version", is.Version, "schemaURL", is.SchemaURL) } return t } // RegisterSpanProcessor adds the given SpanProcessor to the list of SpanProcessors. func (p *TracerProvider) RegisterSpanProcessor(sp SpanProcessor) { + // This check prevents calls during a shutdown. + if p.isShutdown.Load() { + return + } p.mu.Lock() defer p.mu.Unlock() - if p.isShutdown { + // This check prevents calls after a shutdown. + if p.isShutdown.Load() { return } - newSPS := spanProcessorStates{} - newSPS = append(newSPS, p.spanProcessors.Load().(spanProcessorStates)...) + + current := p.getSpanProcessors() + newSPS := make(spanProcessorStates, 0, len(current)+1) + newSPS = append(newSPS, current...) newSPS = append(newSPS, newSpanProcessorState(sp)) - p.spanProcessors.Store(newSPS) + p.spanProcessors.Store(&newSPS) } // UnregisterSpanProcessor removes the given SpanProcessor from the list of SpanProcessors. func (p *TracerProvider) UnregisterSpanProcessor(sp SpanProcessor) { + // This check prevents calls during a shutdown. + if p.isShutdown.Load() { + return + } p.mu.Lock() defer p.mu.Unlock() - if p.isShutdown { + // This check prevents calls after a shutdown. + if p.isShutdown.Load() { return } - old := p.spanProcessors.Load().(spanProcessorStates) + old := p.getSpanProcessors() if len(old) == 0 { return } - spss := spanProcessorStates{} - spss = append(spss, old...) + spss := make(spanProcessorStates, len(old)) + copy(spss, old) // stop the span processor if it is started and remove it from the list var stopOnce *spanProcessorState @@ -209,13 +241,13 @@ func (p *TracerProvider) UnregisterSpanProcessor(sp SpanProcessor) { spss[len(spss)-1] = nil spss = spss[:len(spss)-1] - p.spanProcessors.Store(spss) + p.spanProcessors.Store(&spss) } // ForceFlush immediately exports all spans that have not yet been exported for // all the registered span processors. func (p *TracerProvider) ForceFlush(ctx context.Context) error { - spss := p.spanProcessors.Load().(spanProcessorStates) + spss := p.getSpanProcessors() if len(spss) == 0 { return nil } @@ -236,18 +268,21 @@ func (p *TracerProvider) ForceFlush(ctx context.Context) error { // Shutdown shuts down TracerProvider. All registered span processors are shut down // in the order they were registered and any held computational resources are released. +// After Shutdown is called, all methods are no-ops. func (p *TracerProvider) Shutdown(ctx context.Context) error { - spss := p.spanProcessors.Load().(spanProcessorStates) - if len(spss) == 0 { + // This check prevents deadlocks in case of recursive shutdown. + if p.isShutdown.Load() { return nil } - p.mu.Lock() defer p.mu.Unlock() - p.isShutdown = true + // This check prevents calls after a shutdown has already been done concurrently. + if !p.isShutdown.CompareAndSwap(false, true) { // did toggle? + return nil + } var retErr error - for _, sps := range spss { + for _, sps := range p.getSpanProcessors() { select { case <-ctx.Done(): return ctx.Err() @@ -267,10 +302,14 @@ func (p *TracerProvider) Shutdown(ctx context.Context) error { } } } - p.spanProcessors.Store(spanProcessorStates{}) + p.spanProcessors.Store(&spanProcessorStates{}) return retErr } +func (p *TracerProvider) getSpanProcessors() spanProcessorStates { + return *(p.spanProcessors.Load()) +} + // TracerProviderOption configures a TracerProvider. type TracerProviderOption interface { apply(tracerProviderConfig) tracerProviderConfig diff --git a/vendor/go.opentelemetry.io/otel/sdk/trace/simple_span_processor.go b/vendor/go.opentelemetry.io/otel/sdk/trace/simple_span_processor.go index e8530a959..f8770fff7 100644 --- a/vendor/go.opentelemetry.io/otel/sdk/trace/simple_span_processor.go +++ b/vendor/go.opentelemetry.io/otel/sdk/trace/simple_span_processor.go @@ -19,12 +19,13 @@ import ( "sync" "go.opentelemetry.io/otel" + "go.opentelemetry.io/otel/internal/global" ) // simpleSpanProcessor is a SpanProcessor that synchronously sends all // completed Spans to a trace.Exporter immediately. type simpleSpanProcessor struct { - exporterMu sync.RWMutex + exporterMu sync.Mutex exporter SpanExporter stopOnce sync.Once } @@ -43,6 +44,8 @@ func NewSimpleSpanProcessor(exporter SpanExporter) SpanProcessor { ssp := &simpleSpanProcessor{ exporter: exporter, } + global.Warn("SimpleSpanProcessor is not recommended for production use, consider using BatchSpanProcessor instead.") + return ssp } @@ -51,8 +54,8 @@ func (ssp *simpleSpanProcessor) OnStart(context.Context, ReadWriteSpan) {} // OnEnd immediately exports a ReadOnlySpan. func (ssp *simpleSpanProcessor) OnEnd(s ReadOnlySpan) { - ssp.exporterMu.RLock() - defer ssp.exporterMu.RUnlock() + ssp.exporterMu.Lock() + defer ssp.exporterMu.Unlock() if ssp.exporter != nil && s.SpanContext().TraceFlags().IsSampled() { if err := ssp.exporter.ExportSpans(context.Background(), []ReadOnlySpan{s}); err != nil { diff --git a/vendor/go.opentelemetry.io/otel/sdk/trace/span.go b/vendor/go.opentelemetry.io/otel/sdk/trace/span.go index 9fb483a99..4fcca26e0 100644 --- a/vendor/go.opentelemetry.io/otel/sdk/trace/span.go +++ b/vendor/go.opentelemetry.io/otel/sdk/trace/span.go @@ -302,7 +302,7 @@ func (s *recordingSpan) addOverCapAttrs(limit int, attrs []attribute.KeyValue) { // most a length of limit. Each string slice value is truncated in this fashion // (the slice length itself is unaffected). // -// No truncation is perfromed for a negative limit. +// No truncation is performed for a negative limit. func truncateAttr(limit int, attr attribute.KeyValue) attribute.KeyValue { if limit < 0 { return attr @@ -410,7 +410,7 @@ func (s *recordingSpan) End(options ...trace.SpanEndOption) { } s.mu.Unlock() - sps := s.tracer.provider.spanProcessors.Load().(spanProcessorStates) + sps := s.tracer.provider.getSpanProcessors() if len(sps) == 0 { return } diff --git a/vendor/go.opentelemetry.io/otel/sdk/trace/span_exporter.go b/vendor/go.opentelemetry.io/otel/sdk/trace/span_exporter.go index 9fb3d6eac..c9bd52f7a 100644 --- a/vendor/go.opentelemetry.io/otel/sdk/trace/span_exporter.go +++ b/vendor/go.opentelemetry.io/otel/sdk/trace/span_exporter.go @@ -38,7 +38,7 @@ type SpanExporter interface { // must never be done outside of a new major release. // Shutdown notifies the exporter of a pending halt to operations. The - // exporter is expected to preform any cleanup or synchronization it + // exporter is expected to perform any cleanup or synchronization it // requires while honoring all timeouts and cancellations contained in // the passed context. Shutdown(ctx context.Context) error diff --git a/vendor/go.opentelemetry.io/otel/sdk/trace/span_processor.go b/vendor/go.opentelemetry.io/otel/sdk/trace/span_processor.go index e6ae19352..9c53657a7 100644 --- a/vendor/go.opentelemetry.io/otel/sdk/trace/span_processor.go +++ b/vendor/go.opentelemetry.io/otel/sdk/trace/span_processor.go @@ -62,11 +62,11 @@ type SpanProcessor interface { type spanProcessorState struct { sp SpanProcessor - state *sync.Once + state sync.Once } func newSpanProcessorState(sp SpanProcessor) *spanProcessorState { - return &spanProcessorState{sp: sp, state: &sync.Once{}} + return &spanProcessorState{sp: sp} } type spanProcessorStates []*spanProcessorState diff --git a/vendor/go.opentelemetry.io/otel/sdk/trace/tracer.go b/vendor/go.opentelemetry.io/otel/sdk/trace/tracer.go index f17d924b8..85a71227f 100644 --- a/vendor/go.opentelemetry.io/otel/sdk/trace/tracer.go +++ b/vendor/go.opentelemetry.io/otel/sdk/trace/tracer.go @@ -51,7 +51,7 @@ func (tr *tracer) Start(ctx context.Context, name string, options ...trace.SpanS s := tr.newSpan(ctx, name, &config) if rw, ok := s.(ReadWriteSpan); ok && s.IsRecording() { - sps := tr.provider.spanProcessors.Load().(spanProcessorStates) + sps := tr.provider.getSpanProcessors() for _, sp := range sps { sp.sp.OnStart(ctx, rw) } |