/
311_service_requests_dag.py
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/
311_service_requests_dag.py
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# Copyright 2021 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from airflow import DAG
from airflow.providers.cncf.kubernetes.operators import kubernetes_pod
from airflow.providers.google.cloud.transfers import gcs_to_bigquery
default_args = {
"owner": "Google",
"depends_on_past": False,
"start_date": "2021-03-01",
}
with DAG(
dag_id="san_francisco_311.311_service_requests",
default_args=default_args,
max_active_runs=1,
schedule_interval="@daily",
catchup=False,
default_view="graph",
) as dag:
# Run CSV transform within kubernetes pod
transform_csv = kubernetes_pod.KubernetesPodOperator(
task_id="transform_csv",
name="311_service_requests",
namespace="default",
affinity={
"nodeAffinity": {
"requiredDuringSchedulingIgnoredDuringExecution": {
"nodeSelectorTerms": [
{
"matchExpressions": [
{
"key": "cloud.google.com/gke-nodepool",
"operator": "In",
"values": ["pool-e2-standard-4"],
}
]
}
]
}
}
},
image_pull_policy="Always",
image="{{ var.json.san_francisco_311.container_registry.run_csv_transform_kub }}",
env_vars={
"SOURCE_URL": "https://data.sfgov.org/api/views/vw6y-z8j6/rows.csv",
"SOURCE_FILE": "files/data.csv",
"TARGET_FILE": "files/data_output.csv",
"CHUNKSIZE": "750000",
"TARGET_GCS_BUCKET": "{{ var.value.composer_bucket }}",
"TARGET_GCS_PATH": "data/san_francisco_311/311_service_requests/data_output.csv",
},
resources={"limit_memory": "8G", "limit_cpu": "3"},
)
# Task to load CSV data to a BigQuery table
load_to_bq = gcs_to_bigquery.GCSToBigQueryOperator(
task_id="load_to_bq",
bucket="{{ var.value.composer_bucket }}",
source_objects=["data/san_francisco_311/311_service_requests/data_output.csv"],
source_format="CSV",
destination_project_dataset_table="san_francisco_311.311_service_requests",
skip_leading_rows=1,
allow_quoted_newlines=True,
write_disposition="WRITE_TRUNCATE",
schema_fields=[
{
"name": "unique_key",
"type": "INTEGER",
"description": "Unique case id",
"mode": "REQUIRED",
},
{
"name": "created_date",
"type": "TIMESTAMP",
"description": "The date and time when the service request was made",
"mode": "NULLABLE",
},
{
"name": "closed_date",
"type": "TIMESTAMP",
"description": "The date and time when the service request was closed",
"mode": "NULLABLE",
},
{
"name": "resolution_action_updated_date",
"type": "TIMESTAMP",
"description": "The date and time when the service request was last modified. For requests with status=closed, this will be the date the request was closed",
"mode": "NULLABLE",
},
{
"name": "status",
"type": "STRING",
"description": "The current status of the service request.",
"mode": "NULLABLE",
},
{
"name": "status_notes",
"type": "STRING",
"description": "Explanation of why status was changed to current state or more details on current status than conveyed with status alone",
"mode": "NULLABLE",
},
{
"name": "agency_name",
"type": "STRING",
"description": "The agency responsible for fulfilling or otherwise addressing the service request.",
"mode": "NULLABLE",
},
{
"name": "category",
"type": "STRING",
"description": "The Human readable name of the specific service request type (service_name)",
"mode": "NULLABLE",
},
{
"name": "complaint_type",
"type": "STRING",
"description": "More specific description of the problem related to the Category",
"mode": "NULLABLE",
},
{
"name": "descriptor",
"type": "STRING",
"description": "More specific description of the problem related to the Request Type",
"mode": "NULLABLE",
},
{
"name": "incident_address",
"type": "STRING",
"description": "Human readable address or description of location",
"mode": "NULLABLE",
},
{
"name": "supervisor_district",
"type": "INTEGER",
"description": "",
"mode": "NULLABLE",
},
{
"name": "neighborhood",
"type": "STRING",
"description": "",
"mode": "NULLABLE",
},
{
"name": "location",
"type": "STRING",
"description": "Latitude and longitude using the (WGS84) projection.",
"mode": "NULLABLE",
},
{
"name": "source",
"type": "STRING",
"description": "How the service request was made",
"mode": "NULLABLE",
},
{
"name": "media_url",
"type": "STRING",
"description": "Website URL",
"mode": "NULLABLE",
},
{
"name": "latitude",
"type": "FLOAT",
"description": "Latitude using the (WGS84) projection.",
"mode": "NULLABLE",
},
{
"name": "longitude",
"type": "FLOAT",
"description": "Longitude using the (WGS84) projection.",
"mode": "NULLABLE",
},
{
"name": "police_district",
"type": "STRING",
"description": "",
"mode": "NULLABLE",
},
],
)
transform_csv >> load_to_bq