aprfc qte product (#261)

dags/cumulus/aprfc_qte_01h.py

@@ -0,0 +1,110 @@
+"""
+Acquire and Process APRFC QTE 01h
+
+Returns
+-------
+Airflow DAG
+    Directed Acyclic Graph
+"""
+
+from datetime import datetime, timedelta
+import json
+from string import Template
+from airflow.decorators import dag, task
+from airflow.operators.python import get_current_context
+from airflow.utils.task_group import TaskGroup
+from helpers.downloads import trigger_download
+
+import helpers.cumulus as cumulus
+
+default_args = {
+    "owner": "airflow",
+    "depends_on_past": False,
+    "start_date": (datetime.utcnow() - timedelta(hours=48)).replace(
+        minute=0, second=0, microsecond=0
+    ),
+    "catchup_by_default": False,
+    "email_on_failure": False,
+    "email_on_retry": False,
+    "retries": 6,
+    "retry_delay": timedelta(minutes=30),
+}
+
+
+@dag(
+    default_args=default_args,
+    tags=["cumulus", "AIRTEMP", "QTE", "APRFC"],
+    schedule="45 * * * *",
+    max_active_runs=1,
+    max_active_tasks=1,
+)
+def cumulus_aprfc_qte_01h():
+    """
+    # APRFC hourly estimated temps
+
+    This pipeline handles download, processing, and derivative product creation for APRFC hourly estimated temps
+    Raw data downloaded to S3 and notifies the Cumulus API of new product(s)
+
+    URLs:
+    - BASE - https://nomads.ncep.noaa.gov/pub/data/nccf/com/urma/prod/akurma.YYYYMMDD/
+
+    Filename/Dir Pattern:
+
+    URL Dir - https://nomads.ncep.noaa.gov/pub/data/nccf/com/urma/prod/akurma.YYYYMMDD/
+    Files matching akurma.tHHz.2dvaranl_ndfd_3p0.grb2 - 1 hour\n
+    """
+    s3_bucket = cumulus.S3_BUCKET
+    key_prefix = cumulus.S3_ACQUIRABLE_PREFIX
+
+    URL_ROOT = "https://nomads.ncep.noaa.gov/pub/data/nccf/com/urma/prod/"
+    PRODUCT_SLUG = "aprfc-qte-01h"
+
+    filename_template = Template("akurma.t${hr_}z.2dvaranl_ndfd_3p0.grb2 ")
+
+    url_suffix_template = Template("akurma.${date_}")
+
+    @task()
+    def download_raw_qte():
+        logical_date = get_current_context()["logical_date"]
+        date_only = logical_date.strftime("%Y%m%d")
+
+        url_suffix = url_suffix_template.substitute(
+            date_=date_only,
+        )
+
+        filename = filename_template.substitute(
+            hr_=logical_date.strftime("%H"),
+        )
+
+        file_dir = f"{URL_ROOT}{url_suffix}"
+
+        s3_filename = f"{date_only}_{filename}"
+        s3_key = f"{key_prefix}/{PRODUCT_SLUG}/{s3_filename}"
+
+        print(f"Downloading file: {filename}")
+
+        trigger_download(
+            url=f"{file_dir}/{filename}", s3_bucket=s3_bucket, s3_key=s3_key
+        )
+        return json.dumps(
+            {
+                "execution": logical_date.isoformat(),
+                "s3_key": s3_key,
+                "filename": s3_filename,
+            }
+        )
+
+    @task()
+    def notify_cumulus(payload):
+        payload = json.loads(payload)
+        print("Notifying Cumulus: " + payload["filename"])
+        cumulus.notify_acquirablefile(
+            acquirable_id=cumulus.acquirables[PRODUCT_SLUG],
+            datetime=payload["execution"],
+            s3_key=payload["s3_key"],
+        )
+
+    notify_cumulus(download_raw_qte())
+
+
+aprfc_qte_dag = cumulus_aprfc_qte_01h()

plugins/helpers/cumulus.py

@@ -14,6 +14,7 @@
     "abrfc-qpf-06h": "b1a4754c-5971-11ee-8c99-0242ac120002",
     "aprfc-qpe-06h": "1f67d822-7cbc-11ee-b962-0242ac120002",
     "aprfc-qpf-06h": "a64cb16f-01a8-45c0-a069-9afda805d3a7",
+    "aprfc-qte-01h": "7f8b2d6a-1f3e-11ee-be56-0242ac120002",
     "cnrfc-qpe-06h": "34a89c35-090d-46e8-964a-c621403301b9",
     "cnrfc-qpf-06h": "c22785cd-400e-4664-aef8-426734825c2c",
     "cnrfc-nbm-qpf-06h": "40cfce36-cfad-4a10-8b2d-eb8862378ca5",