feat: create task

tesk/api/ga4gh/tes/controllers.py

@@ -3,9 +3,14 @@
 import logging
 
 # from connexion import request  # type: ignore
+from typing import Any
+
 from foca.utils.logging import log_traffic  # type: ignore
 
+from tesk.api.ga4gh.tes.models import TesTask
 from tesk.api.ga4gh.tes.service_info.service_info import ServiceInfo
+from tesk.api.ga4gh.tes.task.create_task import CreateTesTask
+from tesk.exceptions import InternalServerError
 
 # Get logger instance
 logger = logging.getLogger(__name__)
@@ -26,14 +31,19 @@ def CancelTask(id, *args, **kwargs) -> dict:  # type: ignore
 
 # POST /tasks
 @log_traffic
-def CreateTask(*args, **kwargs) -> dict:  # type: ignore
+def CreateTask(**kwargs) -> dict:  # type: ignore
     """Create task.
 
     Args:
-        *args: Variable length argument list.
         **kwargs: Arbitrary keyword arguments.
     """
-    pass
+    try:
+        request_body: Any = kwargs.get("body")
+        tes_task = TesTask(**request_body)
+        response = CreateTesTask(tes_task).response()
+        return response
+    except Exception as e:
+        raise InternalServerError from e
 
 
 # GET /tasks/service-info

tesk/api/ga4gh/tes/models.py

@@ -275,7 +275,7 @@ class TesResources(BaseModel):
         example={"VmSize": "Standard_D64_v3"},
     )
     backend_parameters_strict: Optional[bool] = Field(
-        False,
+        default=False,
         description="If set to true, backends should fail the task if any "
         "backend_parameters\nkey/values are unsupported, otherwise, backends should "
         "attempt to run the task",

tesk/api/ga4gh/tes/task/__init__.py

@@ -0,0 +1 @@
+"""Task API controller logic."""

tesk/api/ga4gh/tes/task/create_task.py

@@ -0,0 +1,75 @@
+"""TESK API module for creating a task."""
+
+import logging
+
+from tesk.api.ga4gh.tes.models import TesCreateTaskResponse, TesResources, TesTask
+from tesk.api.ga4gh.tes.task.task_request import TesTaskRequest
+from tesk.exceptions import KubernetesError
+
+logger = logging.getLogger(__name__)
+
+
+class CreateTesTask(TesTaskRequest):
+    """Create TES task."""
+
+    def __init__(
+        self,
+        task: TesTask,
+    ):
+        """Initialize the CreateTask class.
+
+        Args:
+          task: TES task to create.
+        """
+        super().__init__()
+        self.task = task
+
+    def handle_request(self) -> TesCreateTaskResponse:
+        """Create TES task."""
+        attempts_no = 0
+        while (
+            attempts_no < self.tesk_k8s_constants.job_constants.JOB_CREATE_ATTEMPTS_NO
+        ):
+            try:
+                attempts_no += 1
+                resources = self.task.resources
+                minimum_ram_gb = self.kubernetes_client_wrapper.minimum_ram_gb()
+
+                if not self.task.resources:
+                    self.task.resources = TesResources(cpu_cores=int(minimum_ram_gb))
+                if resources and resources.ram_gb and resources.ram_gb < minimum_ram_gb:
+                    self.task.resources.ram_gb = minimum_ram_gb
+
+                taskmaster_job = self.tes_kubernetes_converter.from_tes_task_to_k8s_job(
+                    self.task,
+                )
+                taskmaster_config_map = (
+                    self.tes_kubernetes_converter.from_tes_task_to_k8s_config_map(
+                        self.task,
+                        taskmaster_job,
+                    )
+                )
+
+                _ = self.kubernetes_client_wrapper.create_config_map(
+                    taskmaster_config_map
+                )
+                created_job = self.kubernetes_client_wrapper.create_job(taskmaster_job)
+
+                assert created_job.metadata is not None
+                assert created_job.metadata.name is not None
+
+                return TesCreateTaskResponse(id=created_job.metadata.name)
+
+            except KubernetesError as e:
+                if (
+                    not e.is_object_name_duplicated()
+                    or attempts_no
+                    >= self.tesk_k8s_constants.job_constants.JOB_CREATE_ATTEMPTS_NO
+                ):
+                    raise e
+
+            except Exception as exc:
+                logging.error("ERROR: In createTask", exc_info=True)
+                raise exc
+
+        return TesCreateTaskResponse(id="")  # To silence mypy, should never be reached

tesk/api/ga4gh/tes/task/task_request.py

@@ -0,0 +1,38 @@
+"""Base class for tesk request."""
+
+import json
+import logging
+from abc import ABC, abstractmethod
+
+from pydantic import BaseModel
+
+from tesk.k8s.constants import tesk_k8s_constants
+from tesk.k8s.converter.converter import TesKubernetesConverter
+from tesk.k8s.wrapper import KubernetesClientWrapper
+
+logger = logging.getLogger(__name__)
+
+
+class TesTaskRequest(ABC):
+    """Base class for tesk request ecapsulating common methods and members."""
+
+    def __init__(self):
+        """Initialise base class for tesk request."""
+        self.kubernetes_client_wrapper = KubernetesClientWrapper()
+        self.tes_kubernetes_converter = TesKubernetesConverter()
+        self.tesk_k8s_constants = tesk_k8s_constants
+
+    @abstractmethod
+    def handle_request(self) -> BaseModel:
+        """Business logic for the request."""
+        pass
+
+    def response(self) -> dict:
+        """Get response for the request."""
+        response: BaseModel = self.handle_request()
+        try:
+            res: dict = json.loads(json.dumps(response))
+            return res
+        except (TypeError, ValueError) as e:
+            logger.info(e)
+            return response.dict()

tesk/constants.py

@@ -27,8 +27,8 @@ class TeskConstants(BaseModel):
     TASKMASTER_IMAGE_NAME: str = "docker.io/elixircloud/tesk-core-taskmaster"
     TASKMASTER_IMAGE_VERSION: str = "latest"
     TASKMASTER_SERVICE_ACCOUNT_NAME: str = "taskmaster"
-    FILER_BACKOFF_LIMIT: int = 2
-    EXECUTOR_BACKOFF_LIMIT: int = 2
+    FILER_BACKOFF_LIMIT: str = "2"
+    EXECUTOR_BACKOFF_LIMIT: str = "2"
 
     class Config:
         """Configuration for class."""

tesk/custom_config.py

@@ -60,8 +60,8 @@ class Taskmaster(BaseModel):
     environment: Optional[Dict[str, str]] = None
     serviceAccountName: str = tesk_constants.TASKMASTER_SERVICE_ACCOUNT_NAME
     executorSecret: Optional[ExecutorSecret] = None
-    filerBackoffLimit: int = tesk_constants.FILER_BACKOFF_LIMIT
-    executorBackoffLimit: int = tesk_constants.EXECUTOR_BACKOFF_LIMIT
+    filerBackoffLimit: str = tesk_constants.FILER_BACKOFF_LIMIT
+    executorBackoffLimit: str = tesk_constants.EXECUTOR_BACKOFF_LIMIT
 
 
 class CustomConfig(BaseModel):

tesk/exceptions.py

@@ -1,5 +1,7 @@
 """App exceptions."""
 
+from http import HTTPStatus
+
 from connexion.exceptions import (
     BadRequestProblem,
     ExtraParameterProblem,
@@ -26,6 +28,10 @@ class ConfigInvalidError(ValueError):
 class KubernetesError(ApiException):
     """Kubernetes error."""
 
+    def is_object_name_duplicated(self) -> bool:
+        """Check if object name is duplicated."""
+        return self.status == HTTPStatus.CONFLICT
+
 
 # exceptions raised in app context
 exceptions = {

tesk/k8s/converter/__init__.py

@@ -0,0 +1 @@
+"""Module for converting Kubernetes objects to Task objects."""