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Andreas Helms
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Andreas Helms
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Feb 28, 2024
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from datetime import datetime | ||
import task_factories | ||
from airflow import DAG | ||
from airflow.models.param import Param | ||
from helper import get_default_layer_version | ||
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# layer | ||
LAYER_ID = 'vegetation' | ||
LAYER_VARIABLE = 'lai' | ||
RESOLUTION = '2240 12320' | ||
METADATA = { | ||
"id": f'{LAYER_ID}.{LAYER_VARIABLE}', | ||
"timestamps": [], # will be injected | ||
"min_value": 0, | ||
"max_value": 8, | ||
"type": "tiles", # 'tiles' or 'image' | ||
"zoom_levels": '0-7', | ||
"units": '', | ||
"basemap": None, | ||
"legend_values": ["8 m²/m²", "0"], | ||
"time_format": { | ||
"year": "numeric", | ||
"month": "long", | ||
"day": "numeric" | ||
} | ||
} | ||
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# dev | ||
BUCKET_ORIGIN = 'esa-cfs-cate-data' | ||
BUCKET_TMP = 'esa-cfs-pipeline-tmp' | ||
WORKDIR = '/workdir/files' | ||
COLOR_FILE = f'/opt/airflow/plugins/colors/{LAYER_ID}.{LAYER_VARIABLE}.txt' | ||
DEBUG = False | ||
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default_layer_version = get_default_layer_version() | ||
dag_params = { | ||
"max_files": Param(2, type=["null", "integer"], minimum=0,), | ||
"output_bucket": Param("esa-cfs-pipeline-output", type=["string"], enum=['esa-cfs-pipeline-output', 'esa-cfs-tiles']), | ||
"skip_downloads": Param(False, type="boolean"), | ||
"layer_version": Param(default_layer_version, type="string") | ||
} | ||
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with DAG(dag_id=METADATA["id"], start_date=datetime(2022, 1, 1), schedule=None, catchup=False, params=dag_params) as dag: | ||
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# create tasks | ||
clean_workdir = task_factories.clean_dir_skippable( | ||
task_id='clean_workdir', dir=WORKDIR)() | ||
list_files = task_factories.gcs_list_files( | ||
bucket_name=BUCKET_ORIGIN, layer_id=LAYER_ID, layer_variable=LAYER_VARIABLE) | ||
download = task_factories.gcs_download_file( | ||
bucket_name=BUCKET_ORIGIN, dir=WORKDIR, appendix='_downloaded') | ||
legend_image = task_factories.legend_image( | ||
workdir=WORKDIR, color_file=COLOR_FILE) | ||
metadata = task_factories.metadata(workdir=WORKDIR, metadata=METADATA) | ||
gdal_transforms = task_factories.gdal_transforms( | ||
color_file=COLOR_FILE, layer_type=METADATA['type'], zoom_levels=METADATA['zoom_levels'], gdal_ts=RESOLUTION) | ||
upload = task_factories.upload( | ||
WORKDIR, LAYER_ID, LAYER_VARIABLE, METADATA['type']) | ||
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# connect tasks | ||
files = list_files() | ||
clean_workdir >> files | ||
downloads = download.expand(filename=files) | ||
gdal_transforms(downloads) >> upload() | ||
clean_workdir >> legend_image | ||
metadata(files) | ||
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if DEBUG: | ||
downloads >> task_factories.gdal_info() |
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4.28 106 191 114 255 | ||
2.49 173 221 144 255 | ||
0.98 224 242 178 255 | ||
0 255 255 204 255 | ||
nv 0 0 0 0 |
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