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Merged
drewhoskins-temporal merged 1 commit into from
Mar 23, 2026
Merged

Documentation snippets for context propagation #451

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2 changes: 2 additions & 0 deletions ctxpropagation/activities.go
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Original file line number Diff line number Diff line change
Expand Up @@ -4,10 +4,12 @@ import (
"context"
)

// @@@SNIPSTART samples-go-ctx-propagation-activity
func SampleActivity(ctx context.Context) (*Values, error) {
if val := ctx.Value(PropagateKey); val != nil {
vals := val.(Values)
return &vals, nil
}
return nil, nil
}
// @@@SNIPEND
2 changes: 2 additions & 0 deletions ctxpropagation/propagator.go
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Expand Up @@ -7,6 +7,7 @@ import (
"go.temporal.io/sdk/workflow"
)

// @@@SNIPSTART samples-go-ctx-propagation-propagator
type (
// contextKey is an unexported type used as key for items stored in the
// Context object
Expand Down Expand Up @@ -69,6 +70,7 @@ func (s *propagator) Extract(ctx context.Context, reader workflow.HeaderReader)

return ctx, nil
}
// @@@SNIPEND

// ExtractToWorkflow extracts values from headers and puts them into context
func (s *propagator) ExtractToWorkflow(ctx workflow.Context, reader workflow.HeaderReader) (workflow.Context, error) {
Expand Down
2 changes: 2 additions & 0 deletions ctxpropagation/starter/main.go
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Expand Up @@ -24,6 +24,7 @@ func main() {
log.Fatalf("Failed creating interceptor: %v", err)
}

// @@@SNIPSTART samples-go-ctx-propagation-starter
// The client is a heavyweight object that should be created once per process.
c, err := client.Dial(client.Options{
HostPort: client.DefaultHostPort,
Expand All @@ -45,6 +46,7 @@ func main() {
ctx = context.WithValue(ctx, ctxpropagation.PropagateKey, &ctxpropagation.Values{Key: "test", Value: "tested"})

we, err := c.ExecuteWorkflow(ctx, workflowOptions, ctxpropagation.CtxPropWorkflow)
// @@@SNIPEND
if err != nil {
log.Fatalln("Unable to execute workflow", err)
}
Expand Down
2 changes: 2 additions & 0 deletions ctxpropagation/workflow.go
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Expand Up @@ -6,6 +6,7 @@ import (
"go.temporal.io/sdk/workflow"
)

// @@@SNIPSTART samples-go-ctx-propagation-workflow
// CtxPropWorkflow workflow definition
func CtxPropWorkflow(ctx workflow.Context) (err error) {
ao := workflow.ActivityOptions{
Expand All @@ -27,3 +28,4 @@ func CtxPropWorkflow(ctx workflow.Context) (err error) {
workflow.GetLogger(ctx).Info("Workflow completed.")
return nil
}
// @@@SNIPEND
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