mirror of
https://github.com/oarkflow/mq.git
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update: dependencies
This commit is contained in:
Oarkflow
248
examples/html.go
248
examples/html.go
@@ -21,9 +21,9 @@ type Node interface {
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}
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type Result struct {
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NextNodeID string
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Message string
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Error error
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ConditionStatus string
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Message string
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Error error
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}
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type Task struct {
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@@ -84,7 +84,6 @@ func (g *Graph) AddEdge(fromID, toID string) {
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g.Edges[fromID] = append(g.Edges[fromID], toID)
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}
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// TaskManager to handle task state and transitions
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type TaskManager struct {
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tasks map[string]*Task
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graph *Graph
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@@ -106,7 +105,7 @@ func (tm *TaskManager) StartTask() *Task {
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taskID := generateTaskID()
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task := &Task{
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ID: taskID,
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CurrentNodeID: "login", // starting point
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CurrentNodeID: "customRegistration",
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Inputs: make(map[string]string),
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}
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tm.tasks[taskID] = task
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@@ -132,6 +131,73 @@ func (tm *TaskManager) GetNextNode(task *Task) (Node, bool) {
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return nil, false
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}
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func generateTaskID() string {
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rand.Seed(time.Now().UnixNano())
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const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
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var result strings.Builder
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for i := 0; i < 8; i++ {
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result.WriteByte(charset[rand.Intn(len(charset))])
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}
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return result.String()
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}
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func processNode(w http.ResponseWriter, r *http.Request, task *Task, tm *TaskManager) {
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for {
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log.Printf("Processing taskID: %s, Current Node: %s", task.ID, task.CurrentNodeID)
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// Retrieve the current node
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node, exists := tm.graph.Nodes[task.CurrentNodeID]
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if !exists {
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http.Error(w, "Node not found", http.StatusInternalServerError)
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return
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}
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// Process the task with the current node
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result := node.ProcessTask(context.Background(), task)
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log.Printf("Node %s processed. Result ConditionStatus: %s", task.CurrentNodeID, result.ConditionStatus)
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// If the node type is PageType, render the content with the task ID and return
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if node.GetNodeType() == PageType {
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contentWithTaskID := strings.ReplaceAll(result.Message, "{{taskID}}", task.ID)
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fmt.Fprintf(w, contentWithTaskID)
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return
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}
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// Handle any processing error
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if result.Error != nil {
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http.Error(w, result.Error.Error(), http.StatusInternalServerError)
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return
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}
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// Determine the next node ID
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nextNodeID := result.ConditionStatus
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if nextNodeID == "" {
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// If ConditionStatus is empty, try to find the next node in the DAG's edges
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edges := tm.graph.Edges[task.CurrentNodeID]
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if len(edges) > 0 {
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nextNodeID = edges[0] // Get the first edge's destination as the next node
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log.Printf("No ConditionStatus found, following edge to next node: %s", nextNodeID)
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} else {
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// If no edges are found, the process is complete
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log.Printf("Task %s completed. Final result: %s", task.ID, task.FinalResult)
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fmt.Fprintf(w, "<html><body><h1>Process Completed</h1><p>%s</p></body></html>", task.FinalResult)
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return
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}
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}
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// Update the task with the new node ID and persist the task state
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task.CurrentNodeID = nextNodeID
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tm.UpdateTask(task)
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// Check if the next node is a PageType and handle redirection if necessary
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if nextNode, nextExists := tm.graph.Nodes[nextNodeID]; nextExists && nextNode.GetNodeType() == PageType {
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log.Printf("Redirecting to next page: %s", nextNodeID)
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http.Redirect(w, r, fmt.Sprintf("/render?taskID=%s", task.ID), http.StatusFound)
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return
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}
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}
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}
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func renderHandler(w http.ResponseWriter, r *http.Request, tm *TaskManager) {
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taskID := r.URL.Query().Get("taskID")
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task, exists := tm.GetTask(taskID)
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@@ -159,7 +225,7 @@ func submitHandler(w http.ResponseWriter, r *http.Request, tm *TaskManager) {
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if len(values) > 0 {
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task.Inputs[key] = values[0]
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}
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} // Fetch next nodes from the graph based on the current node
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}
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nextNodes, exists := tm.GetNextNode(task)
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if !exists {
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log.Printf("Task %s completed. Final result: %s", task.ID, task.FinalResult)
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@@ -182,85 +248,132 @@ func startTaskHandler(w http.ResponseWriter, r *http.Request, tm *TaskManager) {
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http.Redirect(w, r, fmt.Sprintf("/render?taskID=%s", task.ID), http.StatusFound)
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}
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func generateTaskID() string {
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rand.Seed(time.Now().UnixNano())
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const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
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var result strings.Builder
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for i := 0; i < 8; i++ {
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result.WriteByte(charset[rand.Intn(len(charset))])
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}
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return result.String()
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func isValidEmail(email string) bool {
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return true
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}
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func processNode(w http.ResponseWriter, r *http.Request, task *Task, tm *TaskManager) {
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for {
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log.Printf("Processing taskID: %s, Current Node: %s", task.ID, task.CurrentNodeID)
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node, exists := tm.graph.Nodes[task.CurrentNodeID]
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if !exists {
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http.Error(w, "Node not found", http.StatusInternalServerError)
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return
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}
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result := node.ProcessTask(context.Background(), task)
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log.Printf("Node %s processed. Next NodeID: %s", task.CurrentNodeID, result.NextNodeID)
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func isValidPhone(phone string) bool {
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return true
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}
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if node.GetNodeType() == PageType {
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contentWithTaskID := strings.ReplaceAll(result.Message, "{{taskID}}", task.ID)
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fmt.Fprintf(w, contentWithTaskID)
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return
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}
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if result.Error != nil {
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http.Error(w, result.Error.Error(), http.StatusInternalServerError)
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return
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}
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if result.NextNodeID == "" {
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log.Printf("Task %s completed. Final result: %s", task.ID, task.FinalResult)
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fmt.Fprintf(w, "<html><body><h1>Process Completed</h1><p>%s</p></body></html>", task.FinalResult)
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return
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}
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task.CurrentNodeID = result.NextNodeID
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tm.UpdateTask(task)
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if nextNode, nextExists := tm.graph.Nodes[result.NextNodeID]; nextExists && nextNode.GetNodeType() == PageType {
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log.Printf("Redirecting to next page: %s", result.NextNodeID)
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http.Redirect(w, r, fmt.Sprintf("/render?taskID=%s", task.ID), http.StatusFound)
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return
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}
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func verifyHandler(w http.ResponseWriter, r *http.Request, tm *TaskManager) {
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taskID := r.URL.Query().Get("taskID")
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if taskID == "" {
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http.Error(w, "Missing taskID", http.StatusBadRequest)
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return
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}
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task, exists := tm.GetTask(taskID)
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if !exists {
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http.Error(w, "Task not found", http.StatusNotFound)
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return
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}
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task.Inputs["email_verified"] = "true"
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log.Printf("Email for taskID %s successfully verified.", task.ID)
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nextNode, exists := tm.graph.Nodes["dashboard"]
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if !exists {
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http.Error(w, "Dashboard node not found", http.StatusInternalServerError)
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return
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}
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result := nextNode.ProcessTask(context.Background(), task)
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if result.Error != nil {
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http.Error(w, result.Error.Error(), http.StatusInternalServerError)
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return
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}
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contentWithTaskID := strings.ReplaceAll(result.Message, "{{taskID}}", task.ID)
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fmt.Fprintf(w, contentWithTaskID)
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}
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func main() {
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graph := NewGraph()
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tm := NewTaskManager(graph)
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loginNode := &PageNode{
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ID: "login",
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Content: `<html><body><h1>Login</h1><form method="POST" action="/submit?taskID={{taskID}}"><label>Username: </label><input type="text" name="username"><br><label>Password: </label><input type="password" name="password"><br><input type="submit" value="Login"></form>{{error}}</body></html>`,
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customRegistrationNode := &PageNode{
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ID: "customRegistration",
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Content: `<html><body><h1>Custom Registration</h1><form method="POST" action="/submit?taskID={{taskID}}"><label>Email: </label><input type="text" name="email"><br><label>Phone: </label><input type="text" name="phone"><br><label>City: </label><input type="text" name="city"><br><input type="submit" value="Submit"></form></body></html>`,
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}
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checkCredentialsNode := &FunctionNode{
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ID: "checkCredentials",
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checkValidityNode := &FunctionNode{
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ID: "checkValidity",
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Func: func(task *Task) Result {
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username, password := task.Inputs["username"], task.Inputs["password"]
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if username == "user" && password == "password123" {
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task.FinalResult = "Login Successful"
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return Result{NextNodeID: "dashboard"}
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email, phone := task.Inputs["email"], task.Inputs["phone"]
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if !isValidEmail(email) || !isValidPhone(phone) {
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return Result{
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ConditionStatus: "customRegistration",
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Message: "Invalid email or phone number. Please try again.",
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}
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}
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return Result{NextNodeID: "login", Message: "Invalid credentials. Please try again."}
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return Result{ConditionStatus: "checkManualVerification"}
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},
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}
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checkManualVerificationNode := &FunctionNode{
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ID: "checkManualVerification",
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Func: func(task *Task) Result {
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city := task.Inputs["city"]
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if city != "Kathmandu" {
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return Result{ConditionStatus: "manualVerificationPage"}
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}
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return Result{ConditionStatus: "approveCustomer"}
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},
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}
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approveCustomerNode := &FunctionNode{
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ID: "approveCustomer",
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Func: func(task *Task) Result {
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task.FinalResult = "Customer approved"
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return Result{}
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},
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}
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sendVerificationEmailNode := &FunctionNode{
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ID: "sendVerificationEmail",
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Func: func(task *Task) Result {
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return Result{}
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},
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}
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verificationLinkPageNode := &PageNode{
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ID: "verificationLinkPage",
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Content: `<html><body><h1>Verify Email</h1><p>Click here to verify your email</p><a href="/verify?taskID={{taskID}}">Verify</a></body></html>`,
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}
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dashboardNode := &PageNode{
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ID: "dashboard",
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Content: `<html><body><h1>Dashboard</h1><p>Welcome to the Dashboard. Login Successful!</p></body></html>`,
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Content: `<html><body><h1>Dashboard</h1><p>Welcome to your dashboard!</p></body></html>`,
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}
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manualVerificationNode := &PageNode{
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ID: "manualVerificationPage",
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Content: `<html><body><h1>Manual Verification</h1><p>Please verify the user's information manually.</p><form method="POST" action="/verify?taskID={{taskID}}"><input type="submit" value="Approve"></form></body></html>`,
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}
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verifyApprovedNode := &FunctionNode{
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ID: "verifyApproved",
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Func: func(task *Task) Result {
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return Result{}
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},
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}
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denyVerificationNode := &FunctionNode{
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ID: "denyVerification",
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Func: func(task *Task) Result {
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task.FinalResult = "Verification Denied"
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return Result{}
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},
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}
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graph.AddNode(loginNode)
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graph.AddNode(checkCredentialsNode)
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graph.AddNode(customRegistrationNode)
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graph.AddNode(checkValidityNode)
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graph.AddNode(checkManualVerificationNode)
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graph.AddNode(approveCustomerNode)
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graph.AddNode(sendVerificationEmailNode)
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graph.AddNode(verificationLinkPageNode)
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graph.AddNode(dashboardNode)
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graph.AddEdge("login", "checkCredentials")
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graph.AddEdge("checkCredentials", "login")
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graph.AddEdge("checkCredentials", "dashboard")
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graph.AddNode(manualVerificationNode)
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graph.AddNode(verifyApprovedNode)
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graph.AddNode(denyVerificationNode)
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graph.AddEdge("customRegistration", "checkValidity")
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graph.AddEdge("checkValidity", "checkManualVerification")
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graph.AddEdge("checkManualVerification", "approveCustomer")
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graph.AddEdge("checkManualVerification", "manualVerificationPage")
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graph.AddEdge("approveCustomer", "sendVerificationEmail")
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graph.AddEdge("sendVerificationEmail", "verificationLinkPage")
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graph.AddEdge("verificationLinkPage", "dashboard")
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graph.AddEdge("manualVerificationPage", "verifyApproved")
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graph.AddEdge("manualVerificationPage", "denyVerification")
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graph.AddEdge("verifyApproved", "approveCustomer")
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graph.AddEdge("denyVerification", "verificationLinkPage")
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http.HandleFunc("/start", func(w http.ResponseWriter, r *http.Request) {
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startTaskHandler(w, r, tm)
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@@ -271,6 +384,9 @@ func main() {
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http.HandleFunc("/submit", func(w http.ResponseWriter, r *http.Request) {
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submitHandler(w, r, tm)
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})
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http.HandleFunc("/verify", func(w http.ResponseWriter, r *http.Request) {
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verifyHandler(w, r, tm)
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})
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fmt.Println("Server starting on :8080...")
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log.Fatal(http.ListenAndServe(":8080", nil))
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