135 lines
4.5 KiB
Go
Executable File
135 lines
4.5 KiB
Go
Executable File
package service
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import (
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"context"
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"fmt"
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"gen2d/internal/logger"
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"github.com/cloudwego/eino/compose"
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)
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const (
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nodePromptOptimizer = "prompt_optimizer"
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nodeAssetGenerator = "asset_generator"
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nodeQualitySupervisor = "quality_supervisor"
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nodeFormatAdapter = "format_adapter"
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)
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// ProgressReporter 管线进度回调：stage 为当前节点名，progress 为 0-100。
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type ProgressReporter func(stage string, progress int)
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type progressKeyType struct{}
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var progressCtxKey progressKeyType
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// WithProgressReporter 将进度回调注入 context。
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func WithProgressReporter(ctx context.Context, r ProgressReporter) context.Context {
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return context.WithValue(ctx, progressCtxKey, r)
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}
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// reportProgress 从 context 取出回调上报进度。
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func reportProgress(ctx context.Context, stage string, progress int) {
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if r, ok := ctx.Value(progressCtxKey).(ProgressReporter); ok {
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r(stage, progress)
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}
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}
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// NewGenerateGraph 创建生成管线 Graph（PromptOptimizer → AssetGenerator → QualitySupervisor → FormatAdapter）。
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//
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// START → PromptOptimizer → AssetGenerator → QualitySupervisor
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// ├── pass → FormatAdapter → END
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// └── fail, retry<3 → PromptOptimizer
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// └── fail, retry>=3 → FormatAdapter (降级)
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func NewGenerateGraph() (*compose.Graph[PipelineInput, PipelineOutput], error) {
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g := compose.NewGraph[PipelineInput, PipelineOutput](
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compose.WithGenLocalState(func(ctx context.Context) *PipelineState {
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return &PipelineState{}
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}),
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)
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if err := g.AddLambdaNode(nodePromptOptimizer, promptOptimizerNode,
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compose.WithStatePreHandler(promptOptimizerPreHandler),
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compose.WithStatePostHandler(promptOptimizerPostHandler),
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); err != nil {
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return nil, fmt.Errorf("add %s node: %w", nodePromptOptimizer, err)
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}
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if err := g.AddLambdaNode(nodeAssetGenerator, assetGeneratorNode,
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compose.WithStatePostHandler(assetGeneratorPostHandler),
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); err != nil {
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return nil, fmt.Errorf("add %s node: %w", nodeAssetGenerator, err)
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}
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if err := g.AddLambdaNode(nodeQualitySupervisor, qualitySupervisorNode); err != nil {
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return nil, fmt.Errorf("add %s node: %w", nodeQualitySupervisor, err)
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}
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if err := g.AddLambdaNode(nodeFormatAdapter, formatAdapterNode); err != nil {
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return nil, fmt.Errorf("add %s node: %w", nodeFormatAdapter, err)
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}
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// 连线：START → PromptOptimizer → AssetGenerator → Supervisor
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if err := g.AddEdge(compose.START, nodePromptOptimizer); err != nil {
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return nil, fmt.Errorf("add edge START->%s: %w", nodePromptOptimizer, err)
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}
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if err := g.AddEdge(nodePromptOptimizer, nodeAssetGenerator); err != nil {
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return nil, fmt.Errorf("add edge %s->%s: %w", nodePromptOptimizer, nodeAssetGenerator, err)
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}
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if err := g.AddEdge(nodeAssetGenerator, nodeQualitySupervisor); err != nil {
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return nil, fmt.Errorf("add edge %s->%s: %w", nodeAssetGenerator, nodeQualitySupervisor, err)
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}
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if err := g.AddEdge(nodeFormatAdapter, compose.END); err != nil {
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return nil, fmt.Errorf("add edge %s->END: %w", nodeFormatAdapter, err)
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}
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// 连线：质检分支（从 state.NextNode 读取路由目标）
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if err := g.AddBranch(nodeQualitySupervisor, compose.NewGraphBranch(
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func(ctx context.Context, _ PipelineInput) (string, error) {
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var next string
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_ = compose.ProcessState[*PipelineState](ctx, func(_ context.Context, state *PipelineState) error {
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next = state.NextNode
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return nil
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})
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return next, nil
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},
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map[string]bool{nodePromptOptimizer: true, nodeFormatAdapter: true},
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)); err != nil {
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return nil, fmt.Errorf("add branch at %s: %w", nodeQualitySupervisor, err)
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}
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return g, nil
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}
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// RunPipeline 编译并执行生成管线。
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func RunPipeline(ctx context.Context, in PipelineInput) (*PipelineOutput, error) {
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l := logger.FromCtx(ctx)
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l.Info("pipeline started",
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"asset_type", in.AssetType,
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"tags", in.Tags,
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"resolution", in.Params.Resolution,
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)
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g, err := NewGenerateGraph()
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if err != nil {
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l.Error("pipeline create graph failed", "error", err)
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return nil, fmt.Errorf("create graph: %w", err)
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}
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r, err := g.Compile(ctx, compose.WithMaxRunSteps(20))
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if err != nil {
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l.Error("pipeline compile failed", "error", err)
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return nil, fmt.Errorf("compile graph: %w", err)
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}
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output, err := r.Invoke(ctx, in)
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if err != nil {
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l.Error("pipeline invoke failed", "error", err)
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return nil, fmt.Errorf("invoke pipeline: %w", err)
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}
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l.Info("pipeline completed", "asset_count", len(output.Assets))
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return &output, nil
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}
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