rm: implement tasks API

rm/tasks.go

@@ -0,0 +1,104 @@
+package nexusrm
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"time"
+)
+
+const (
+	restTasks = "service/rest/v1/tasks"
+)
+
+type listTasksResponse struct {
+	Items             []Task `json:"items"`
+	ContinuationToken string `json:"continuationToken"`
+}
+
+type Task struct {
+	ID            string    `json:"id"`
+	Name          string    `json:"name"`
+	Type          string    `json:"type"`
+	Message       string    `json:"message"`
+	CurrentState  string    `json:"currentState"`
+	LastRunResult string    `json:"lastRunResult"`
+	NextRun       time.Time `json:"nextRun"`
+	LastRun       time.Time `json:"lastRun"`
+}
+
+// TasksList gets a list of all tasks in the Repository Manager
+func TasksList(rm RM) ([]Task, error) {
+	continuation := ""
+
+	getTasks := func() (listResp listTasksResponse, err error) {
+		url := fmt.Sprintf(restTasks)
+
+		if continuation != "" {
+			url += "&continuationToken=" + continuation
+		}
+
+		body, resp, err := rm.Get(url)
+		if err != nil || resp.StatusCode != http.StatusOK {
+			return
+		}
+
+		err = json.Unmarshal(body, &listResp)
+
+		return
+	}
+
+	var items []Task
+	for {
+		resp, err := getTasks()
+		if err != nil {
+			return items, fmt.Errorf("could not get tasks: %v", err)
+		}
+
+		items = append(items, resp.Items...)
+
+		if resp.ContinuationToken == "" {
+			break
+		}
+
+		continuation = resp.ContinuationToken
+	}
+	return items, nil
+}
+
+// TasksGetByID gets a single task by ID
+func TasksGetByID(rm RM, id string) (Task, error) {
+	var task Task
+
+	url := fmt.Sprintf("%s/%s", restTasks, id)
+	body, resp, err := rm.Get(url)
+	if err != nil || resp.StatusCode != http.StatusOK {
+		return task, fmt.Errorf("could not fetch task: %w", err)
+	}
+
+	if err := json.Unmarshal(body, &task); err != nil {
+		return task, fmt.Errorf("could not unmarshal task: %w", err)
+	}
+
+	return task, nil
+}
+
+// TasksRun triggers the task with the specified ID
+func TasksRun(rm RM, id string) error {
+	url := fmt.Sprintf("%s/%s/run", restTasks, id)
+	_, resp, err := rm.Post(url, nil)
+	if err != nil && resp.StatusCode != http.StatusNoContent {
+		return fmt.Errorf("could not run task: %w", err)
+	}
+	return nil
+}
+
+// TasksStop stops the task with the specified ID
+func TasksStop(rm RM, id string) error {
+	url := fmt.Sprintf("%s/%s/stop", restTasks, id)
+	_, resp, err := rm.Post(url, nil)
+	if err != nil && resp.StatusCode != http.StatusNoContent {
+		return fmt.Errorf("could not stop task: %w", err)
+	}
+	return nil
+}