Add NHN Cloud API integration with async task support

- NHN Cloud API packages: token, vpc, compute, nks, storage
- REST API endpoints with Swagger documentation
- Async task processing for long-running operations
- CORS configuration for frontend integration
- Enhanced logging for debugging API calls

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

nhn/models.py

@@ -0,0 +1,89 @@
+"""
+NHN Cloud Async Task Models
+
+비동기 작업 상태 추적
+"""
+
+import uuid
+from django.db import models
+
+
+class AsyncTask(models.Model):
+    """비동기 작업 상태 추적 모델"""
+
+    class Status(models.TextChoices):
+        PENDING = "pending", "대기중"
+        RUNNING = "running", "실행중"
+        SUCCESS = "success", "성공"
+        FAILED = "failed", "실패"
+
+    class TaskType(models.TextChoices):
+        # Compute
+        INSTANCE_CREATE = "instance_create", "인스턴스 생성"
+        INSTANCE_DELETE = "instance_delete", "인스턴스 삭제"
+        INSTANCE_ACTION = "instance_action", "인스턴스 액션"
+        # VPC/Network
+        VPC_CREATE = "vpc_create", "VPC 생성"
+        VPC_DELETE = "vpc_delete", "VPC 삭제"
+        SUBNET_CREATE = "subnet_create", "서브넷 생성"
+        SUBNET_DELETE = "subnet_delete", "서브넷 삭제"
+        # NKS
+        NKS_CREATE = "nks_create", "NKS 클러스터 생성"
+        NKS_DELETE = "nks_delete", "NKS 클러스터 삭제"
+        # Storage
+        STORAGE_CREATE = "storage_create", "스토리지 컨테이너 생성"
+        STORAGE_DELETE = "storage_delete", "스토리지 컨테이너 삭제"
+
+    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+    task_type = models.CharField(max_length=50, choices=TaskType.choices)
+    status = models.CharField(
+        max_length=20, choices=Status.choices, default=Status.PENDING
+    )
+
+    # 요청 정보
+    request_data = models.JSONField(default=dict, help_text="요청 데이터")
+
+    # 결과 정보
+    result_data = models.JSONField(default=dict, help_text="결과 데이터")
+    error_message = models.TextField(blank=True, help_text="에러 메시지")
+
+    # NHN Cloud 리소스 정보
+    resource_id = models.CharField(max_length=255, blank=True, help_text="생성된 리소스 ID")
+    resource_name = models.CharField(max_length=255, blank=True, help_text="리소스 이름")
+
+    # 메타 정보
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+    completed_at = models.DateTimeField(null=True, blank=True)
+
+    class Meta:
+        ordering = ["-created_at"]
+        verbose_name = "비동기 작업"
+        verbose_name_plural = "비동기 작업들"
+
+    def __str__(self):
+        return f"{self.task_type} - {self.status} ({self.id})"
+
+    def mark_running(self):
+        """작업 시작"""
+        self.status = self.Status.RUNNING
+        self.save(update_fields=["status", "updated_at"])
+
+    def mark_success(self, result_data=None, resource_id=None):
+        """작업 성공"""
+        from django.utils import timezone
+        self.status = self.Status.SUCCESS
+        if result_data:
+            self.result_data = result_data
+        if resource_id:
+            self.resource_id = resource_id
+        self.completed_at = timezone.now()
+        self.save()
+
+    def mark_failed(self, error_message):
+        """작업 실패"""
+        from django.utils import timezone
+        self.status = self.Status.FAILED
+        self.error_message = error_message
+        self.completed_at = timezone.now()
+        self.save()