Carlos Florêncio
71 lines
2.2 KiB
Go
71 lines
2.2 KiB
Go
package models
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import "fmt"
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// WorkflowSessionTargetKind identifies the conversation a workflow step may
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// reuse when it starts a session.
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type WorkflowSessionTargetKind string
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const (
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WorkflowSessionTargetInitial WorkflowSessionTargetKind = "initial"
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WorkflowSessionTargetStep WorkflowSessionTargetKind = "step"
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)
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// WorkflowSessionTarget is the durable workflow configuration for session
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// reuse. StepID is required only for a step target and refers to an earlier
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// step in the same workflow.
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type WorkflowSessionTarget struct {
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Kind WorkflowSessionTargetKind `json:"kind" yaml:"kind"`
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StepID string `json:"step_id,omitempty" yaml:"step_id,omitempty"`
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}
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// ValidateWorkflowSessionTarget validates the closed target union without
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// needing the surrounding workflow. Position and ownership rules are checked
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// by workflow validators.
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func ValidateWorkflowSessionTarget(target *WorkflowSessionTarget) error {
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if target == nil {
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return nil
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}
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switch target.Kind {
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case WorkflowSessionTargetInitial:
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if target.StepID != "" {
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return fmt.Errorf("initial session target must not include step_id")
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}
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case WorkflowSessionTargetStep:
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if target.StepID == "" {
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return fmt.Errorf("step session target requires step_id")
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}
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default:
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return fmt.Errorf("unknown session target kind %q", target.Kind)
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}
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return nil
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}
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// CloneWorkflowSessionTarget returns an independent target value.
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func CloneWorkflowSessionTarget(target *WorkflowSessionTarget) *WorkflowSessionTarget {
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if target == nil {
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return nil
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}
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clone := *target
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return &clone
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}
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// RemapWorkflowSessionTarget replaces a template step alias with its newly
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// generated workflow-step ID.
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func RemapWorkflowSessionTarget(target *WorkflowSessionTarget, idMap map[string]string) *WorkflowSessionTarget {
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clone := CloneWorkflowSessionTarget(target)
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if clone == nil || clone.Kind != WorkflowSessionTargetStep {
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return clone
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}
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clone.StepID = RemapStepID(clone.StepID, idMap)
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return clone
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}
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// EqualWorkflowSessionTarget compares nullable target values.
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func EqualWorkflowSessionTarget(left, right *WorkflowSessionTarget) bool {
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if left == nil || right == nil {
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return left == right
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}
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return left.Kind == right.Kind && left.StepID == right.StepID
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}
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