mirror of
https://github.com/oarkflow/mq.git
synced 2025-10-05 16:06:55 +08:00
110 lines
3.0 KiB
Go
110 lines
3.0 KiB
Go
package main
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import (
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"context"
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"encoding/json"
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"fmt"
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"os"
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"github.com/oarkflow/jet"
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"github.com/oarkflow/mq/consts"
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v2 "github.com/oarkflow/mq/dag/v2"
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)
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func Form(ctx context.Context, payload json.RawMessage) v2.Result {
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bt, err := os.ReadFile("webroot/form.html")
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if err != nil {
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return v2.Result{Error: err, Ctx: ctx}
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}
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parser := jet.NewWithMemory(jet.WithDelims("{{", "}}"))
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rs, err := parser.ParseTemplate(string(bt), map[string]any{
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"task_id": ctx.Value("task_id"),
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})
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if err != nil {
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return v2.Result{Error: err, Ctx: ctx}
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}
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ctx = context.WithValue(ctx, consts.ContentType, consts.TypeHtml)
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data := map[string]any{
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"html_content": rs,
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}
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bt, _ = json.Marshal(data)
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return v2.Result{Data: bt, Ctx: ctx}
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}
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func NodeA(ctx context.Context, payload json.RawMessage) v2.Result {
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var data map[string]any
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if err := json.Unmarshal(payload, &data); err != nil {
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return v2.Result{Error: err, Ctx: ctx}
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}
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data["allowed_voting"] = data["age"] == "18"
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updatedPayload, _ := json.Marshal(data)
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return v2.Result{Data: updatedPayload, Ctx: ctx}
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}
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func NodeB(ctx context.Context, payload json.RawMessage) v2.Result {
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var data map[string]any
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if err := json.Unmarshal(payload, &data); err != nil {
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return v2.Result{Error: err, Ctx: ctx}
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}
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data["female_voter"] = data["gender"] == "female"
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updatedPayload, _ := json.Marshal(data)
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return v2.Result{Data: updatedPayload, Ctx: ctx}
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}
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func NodeC(ctx context.Context, payload json.RawMessage) v2.Result {
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var data map[string]any
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if err := json.Unmarshal(payload, &data); err != nil {
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return v2.Result{Error: err, Ctx: ctx}
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}
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data["voted"] = true
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updatedPayload, _ := json.Marshal(data)
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return v2.Result{Data: updatedPayload, Ctx: ctx}
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}
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func Result(ctx context.Context, payload json.RawMessage) v2.Result {
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bt, err := os.ReadFile("webroot/result.html")
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if err != nil {
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return v2.Result{Error: err, Ctx: ctx}
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}
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var data map[string]any
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if err := json.Unmarshal(payload, &data); err != nil {
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return v2.Result{Error: err, Ctx: ctx}
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}
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if bt != nil {
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parser := jet.NewWithMemory(jet.WithDelims("{{", "}}"))
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rs, err := parser.ParseTemplate(string(bt), data)
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if err != nil {
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return v2.Result{Error: err, Ctx: ctx}
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}
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ctx = context.WithValue(ctx, consts.ContentType, consts.TypeHtml)
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data := map[string]any{
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"html_content": rs,
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}
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bt, _ := json.Marshal(data)
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return v2.Result{Data: bt, Ctx: ctx}
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}
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return v2.Result{Data: payload, Ctx: ctx}
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}
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func notify(taskID string, result v2.Result) {
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fmt.Printf("Final result for Task %s: %s\n", taskID, string(result.Data))
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}
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func main() {
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dag := v2.NewDAG(notify)
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dag.AddNode(v2.Page, "Form", Form)
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dag.AddNode(v2.Function, "NodeA", NodeA)
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dag.AddNode(v2.Function, "NodeB", NodeB)
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dag.AddNode(v2.Function, "NodeC", NodeC)
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dag.AddNode(v2.Page, "Result", Result)
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dag.AddEdge(v2.Simple, "Form", "NodeA")
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dag.AddEdge(v2.Simple, "NodeA", "NodeB")
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dag.AddEdge(v2.Simple, "NodeB", "NodeC")
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dag.AddEdge(v2.Simple, "NodeC", "Result")
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if dag.Error != nil {
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panic(dag.Error)
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}
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dag.Start(":8080")
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}
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