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sujit
2025-09-19 19:11:08 +05:45
parent 297b5c0900
commit 86185d5499
2 changed files with 248 additions and 1 deletions
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2
examples/complex_dag_pages/main.go
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@@ -369,7 +369,7 @@ func (p *LoginPage) ProcessTask(ctx context.Context, task *mq.Task) mq.Result {
<h1>📱 Phone Processing System</h1>
<p>Please login to continue</p>
</div>
<form method="post" action="/process" id="loginForm">
<form method="post" action="/process?task_id={{task_id}}" id="loginForm">
<div class="form-group">
<label for="username">Username</label>
<input type="text" id="username" name="username" required placeholder="Enter your username">

247
examples/form.go
View File

@@ -25,6 +25,8 @@ func main() {
// Add SMS workflow nodes
// Note: Page nodes have no timeout by default, allowing users unlimited time for form input
flow.AddDAGNode(dag.Page, "Login", "login", loginSubDAG(), true)
flow.AddNode(dag.Page, "SMS Form", "SMSForm", &SMSFormNode{})
flow.AddNode(dag.Function, "Validate Input", "ValidateInput", &ValidateInputNode{})
flow.AddNode(dag.Function, "Send SMS", "SendSMS", &SendSMSNode{})
@@ -32,6 +34,7 @@ func main() {
flow.AddNode(dag.Page, "Error Page", "ErrorPage", &ErrorPageNode{})
// Define edges for SMS workflow
flow.AddEdge(dag.Simple, "Login to Form", "login", "SMSForm")
flow.AddEdge(dag.Simple, "Form to Validation", "SMSForm", "ValidateInput")
flow.AddCondition("ValidateInput", map[string]string{"valid": "SendSMS", "invalid": "ErrorPage"})
flow.AddCondition("SendSMS", map[string]string{"sent": "SMSResult", "failed": "ErrorPage"})
@@ -46,6 +49,250 @@ func main() {
flow.Start(context.Background(), "0.0.0.0:8083")
}
// loginSubDAG creates a login sub-DAG with page for authentication
func loginSubDAG() *dag.DAG {
login := dag.NewDAG("Login Sub DAG", "login-sub-dag", func(taskID string, result mq.Result) {
fmt.Printf("Login Sub DAG Final result for task %s: %s\n", taskID, string(result.Payload))
}, mq.WithSyncMode(true))
login.
AddNode(dag.Page, "Login Page", "login-page", &LoginPage{}).
AddNode(dag.Function, "Verify Credentials", "verify-credentials", &VerifyCredentials{}).
AddNode(dag.Function, "Generate Token", "generate-token", &GenerateToken{}).
AddEdge(dag.Simple, "Login to Verify", "login-page", "verify-credentials").
AddEdge(dag.Simple, "Verify to Token", "verify-credentials", "generate-token")
return login
}
type LoginPage struct {
dag.Operation
}
func (p *LoginPage) ProcessTask(ctx context.Context, task *mq.Task) mq.Result {
// Check if this is a form submission
var inputData map[string]interface{}
if len(task.Payload) > 0 {
if err := json.Unmarshal(task.Payload, &inputData); err == nil {
// Check if we have form data (username/password)
if formData, ok := inputData["form"].(map[string]interface{}); ok {
// This is a form submission, pass it through for verification
credentials := map[string]interface{}{
"username": formData["username"],
"password": formData["password"],
}
inputData["credentials"] = credentials
updatedPayload, _ := json.Marshal(inputData)
return mq.Result{Payload: updatedPayload, Ctx: ctx}
}
}
}
// Otherwise, show the form
var data map[string]interface{}
if err := json.Unmarshal(task.Payload, &data); err != nil {
data = make(map[string]interface{})
}
// HTML content for login page
htmlContent := `
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Phone Processing System - Login</title>
<style>
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
margin: 0;
padding: 0;
min-height: 100vh;
display: flex;
align-items: center;
justify-content: center;
}
.login-container {
background: white;
padding: 2rem;
border-radius: 10px;
box-shadow: 0 10px 25px rgba(0,0,0,0.2);
width: 100%;
max-width: 400px;
}
.login-header {
text-align: center;
margin-bottom: 2rem;
}
.login-header h1 {
color: #333;
margin: 0;
font-size: 1.8rem;
}
.login-header p {
color: #666;
margin: 0.5rem 0 0 0;
}
.form-group {
margin-bottom: 1.5rem;
}
.form-group label {
display: block;
margin-bottom: 0.5rem;
color: #333;
font-weight: 500;
}
.form-group input {
width: 100%;
padding: 0.75rem;
border: 2px solid #e1e5e9;
border-radius: 5px;
font-size: 1rem;
transition: border-color 0.3s;
box-sizing: border-box;
}
.form-group input:focus {
outline: none;
border-color: #667eea;
}
.login-btn {
width: 100%;
padding: 0.75rem;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
color: white;
border: none;
border-radius: 5px;
font-size: 1rem;
font-weight: 600;
cursor: pointer;
transition: transform 0.2s;
}
.login-btn:hover {
transform: translateY(-2px);
}
.login-btn:active {
transform: scale(0.98);
}
.status-message {
margin-top: 1rem;
padding: 0.5rem;
border-radius: 5px;
text-align: center;
font-weight: 500;
}
.status-success {
background-color: #d4edda;
color: #155724;
border: 1px solid #c3e6cb;
}
.status-error {
background-color: #f8d7da;
color: #721c24;
border: 1px solid #f5c6cb;
}
</style>
</head>
<body>
<div class="login-container">
<div class="login-header">
<h1>📱 Phone Processing System</h1>
<p>Please login to continue</p>
</div>
<form method="post" action="/process?task_id={{task_id}}&next=true" id="loginForm">
<div class="form-group">
<label for="username">Username</label>
<input type="text" id="username" name="username" required placeholder="Enter your username">
</div>
<div class="form-group">
<label for="password">Password</label>
<input type="password" id="password" name="password" required placeholder="Enter your password">
</div>
<button type="submit" class="login-btn">Login</button>
</form>
<div id="statusMessage"></div>
</div>
<script>
// Form will submit naturally to the action URL
document.getElementById('loginForm').addEventListener('submit', function(e) {
// Optional: Add loading state
const btn = e.target.querySelector('.login-btn');
btn.textContent = 'Logging in...';
btn.disabled = true;
});
</script>
</body>
</html>`
parser := jet.NewWithMemory(jet.WithDelims("{{", "}}"))
rs, err := parser.ParseTemplate(htmlContent, map[string]any{
"task_id": ctx.Value("task_id"),
})
if err != nil {
return mq.Result{Error: err, Ctx: ctx}
}
ctx = context.WithValue(ctx, consts.ContentType, consts.TypeHtml)
resultData := map[string]any{
"html_content": rs,
"step": "login",
"data": data,
}
resultPayload, _ := json.Marshal(resultData)
return mq.Result{
Payload: resultPayload,
Ctx: ctx,
}
}
type VerifyCredentials struct {
dag.Operation
}
func (p *VerifyCredentials) ProcessTask(ctx context.Context, task *mq.Task) mq.Result {
var data map[string]interface{}
if err := json.Unmarshal(task.Payload, &data); err != nil {
return mq.Result{Error: fmt.Errorf("VerifyCredentials Error: %s", err.Error()), Ctx: ctx}
}
username, _ := data["username"].(string)
password, _ := data["password"].(string)
// Simple verification logic
if username == "admin" && password == "password123" {
data["authenticated"] = true
data["user_role"] = "administrator"
} else {
data["authenticated"] = false
data["error"] = "Invalid credentials"
}
delete(data, "html_content")
updatedPayload, _ := json.Marshal(data)
return mq.Result{Payload: updatedPayload, Ctx: ctx}
}
type GenerateToken struct {
dag.Operation
}
func (p *GenerateToken) ProcessTask(ctx context.Context, task *mq.Task) mq.Result {
var data map[string]interface{}
if err := json.Unmarshal(task.Payload, &data); err != nil {
return mq.Result{Error: fmt.Errorf("GenerateToken Error: %s", err.Error()), Ctx: ctx}
}
if authenticated, ok := data["authenticated"].(bool); ok && authenticated {
data["auth_token"] = "jwt_token_123456789"
data["token_expires"] = "2025-09-19T13:00:00Z"
}
delete(data, "html_content")
updatedPayload, _ := json.Marshal(data)
return mq.Result{Payload: updatedPayload, Ctx: ctx}
}
// SMSFormNode - Initial form to collect SMS data
type SMSFormNode struct {
dag.Operation