148 lines
6.2 KiB
Plaintext
148 lines
6.2 KiB
Plaintext
{
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"cells": [
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{
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"cell_type": "code",
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"execution_count": 13,
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"id": "09a05cc1",
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"metadata": {},
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"outputs": [],
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"source": [
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"from pyspark.sql import SparkSession, DataFrame\n",
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"from pyspark.sql import functions as F\n",
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"from pathlib import Path\n",
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"import glob\n",
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"import os\n",
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"from dotenv import load_dotenv, find_dotenv"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 14,
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"id": "2c1aeb30",
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"metadata": {},
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"outputs": [],
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"source": [
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" ## Extract (Load in) ##\n",
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"def start_spark(app_name):\n",
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" jar_path = str(Path.cwd() / \"postgresql.jar\")\n",
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" spark = SparkSession.builder.appName(app_name).config(\"spark.jars\", jar_path).config(\"spark.driver.extraClassPath\", jar_path).getOrCreate()\n",
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" spark.sparkContext.setLogLevel(\"ERROR\")\n",
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" return spark\n",
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"\n",
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"def get_jdbc_config():\n",
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" \"\"\"Load env vars and return a Postgres URL\"\"\"\n",
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" load_dotenv(find_dotenv())\n",
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" \n",
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" username=os.getenv(\"DATABASE_USERNAME\")\n",
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" password=os.getenv(\"DATABASE_PASSWORD\")\n",
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" host=os.getenv(\"DATABASE_IP\")\n",
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" port=int(os.getenv(\"DATABASE_PORT\", 5432))\n",
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" database=os.getenv(\"DATABASE_NAME\")\n",
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" \n",
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" missing = [k for k, v in {\n",
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" \"DATABASE_USERNAME\": username,\n",
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" \"DATABASE_PASSWORD\": password,\n",
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" \"DATABASE_IP\": host,\n",
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" \"DATABASE_NAME\": database,}.items() if not v]\n",
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" if missing:\n",
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" raise ValueError(f\"Missing env vars: {missing}\")\n",
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"\n",
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" url = f\"jdbc:postgresql://{host}:{port}/{database}\"\n",
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" properties = {\n",
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" \"user\": username,\n",
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" \"password\": password,\n",
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" \"driver\": \"org.postgresql.Driver\"\n",
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" }\n",
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" return url, properties\n",
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"\n",
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"def read_jdbc(spark, table_name):\n",
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" url, properties = get_jdbc_config()\n",
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" return spark.read.jdbc(url=url, table=table_name, properties=properties)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 15,
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"id": "9631ba07",
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"metadata": {},
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"outputs": [],
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"source": [
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" ## Transform ##"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "f7673c72",
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"metadata": {},
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"outputs": [
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{
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"name": "stderr",
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"output_type": "stream",
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"text": [
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"[Stage 0:> (0 + 1) / 1]\r"
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]
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},
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"+----------+--------------+--------------------+---------+-------+-----------------+--------------------+----------+------------+-------+-------+--------------------+-------------------+--------------------+--------------------+--------+----------+------------+------------+\n",
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"|album_name| artist_name| track_name|ms_played|offline|offline_timestamp| platform|reason_end|reason_start|shuffle|skipped| track_uri| ts| username| offline_timestamped| time| date|offline_time|offline_date|\n",
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"+----------+--------------+--------------------+---------+-------+-----------------+--------------------+----------+------------+-------+-------+--------------------+-------------------+--------------------+--------------------+--------+----------+------------+------------+\n",
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"|Elton John| Elton John| Your Song| 0.42| false| 1665740300104|iOS 16.0 (iPhone1...| endplay| clickrow| false| NULL|spotify:track:38z...|2022-10-14 10:38:46|fm30ajetkgrrkbvae...|+54755-03-18 14:5...|10:38:46|2022-10-14| 14:55:04|+54755-03-18|\n",
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"| Lights 10|Ellie Goulding| Your Song| 3.11| false| 1665740325724|iOS 16.0 (iPhone1...| endplay| clickrow| true| NULL|spotify:track:6XK...|2022-10-14 10:42:32|fm30ajetkgrrkbvae...|+54755-03-18 22:0...|10:42:32|2022-10-14| 22:02:04|+54755-03-18|\n",
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"| 19| Adele|Make You Feel My ...| 3.53| false| 1665740551741|iOS 16.0 (iPhone1...| trackdone| clickrow| false| NULL|spotify:track:273...|2022-10-14 10:46:27|fm30ajetkgrrkbvae...|+54755-03-21 12:4...|10:46:27|2022-10-14| 12:49:01|+54755-03-21|\n",
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"| May It Be| Enya| May It Be| 0.07| false| 1665740786443|iOS 16.0 (iPhone1...| backbtn| trackdone| true| NULL|spotify:track:1wI...|2022-10-14 10:46:32|fm30ajetkgrrkbvae...|+54755-03-24 06:0...|10:46:32|2022-10-14| 06:00:43|+54755-03-24|\n",
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"| 19| Adele|Make You Feel My ...| 0.13| false| 1665740791987|iOS 16.0 (iPhone1...| fwdbtn| backbtn| true| NULL|spotify:track:273...|2022-10-14 10:46:40|fm30ajetkgrrkbvae...|+54755-03-24 07:3...|10:46:40|2022-10-14| 07:33:07|+54755-03-24|\n",
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"+----------+--------------+--------------------+---------+-------+-----------------+--------------------+----------+------------+-------+-------+--------------------+-------------------+--------------------+--------------------+--------+----------+------------+------------+\n",
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"only showing top 5 rows\n"
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]
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},
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{
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"name": "stderr",
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"output_type": "stream",
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"text": [
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" \r"
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]
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}
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],
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"source": [
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" ## MAIN ## \n",
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"def main():\n",
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" app_name = \"ml_media_silver\"\n",
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" spark = start_spark(app_name)\n",
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"\n",
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" table_name = \"spotify_data\"\n",
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" silver_df = read_jdbc(spark, table_name)\n",
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" silver_df.show(1)\n",
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"\n",
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" spark.stop()\n",
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"if __name__ == \"__main__\":\n",
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" main()"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": ".venv",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.13.7"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 5
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}
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