dimensions done, still need to fully test

2024-08-09 16:27:36 +01:00
parent da5cf943d6
commit b7b6f8887c
4 changed files with 169 additions and 58 deletions
@@ -1,41 +0,0 @@
-import polars as pl
-class DimAccounts:
-    def __init__(self, config):
-        self.config = config
-        self.transform()
-
-    def transform(self):
-        file_path = self.config['base_data_path'] + '/accounts.parquet'
-        # Read the parquet file into a polars DataFrame
-        accounts_df = pl.read_parquet(file_path)
-
-        # Transform the DataFrame
-        accounts_df = (
-            accounts_df
-            .with_columns([
-                pl.col("id").alias("account_id"),
-                pl.col("name").alias("account_name"),
-                pl.col("type").alias("account_type"),
-                pl.col("on_budget").alias("on_budget"),
-                pl.col("closed").alias("closed"),
-                pl.col("note").alias("note"),
-                pl.col("balance").alias("balance"),
-                pl.col("cleared_balance").alias("cleared_balance"),
-                pl.col("uncleared_balance").alias("uncleared_balance"),
-                pl.col("deleted").alias("deleted"),
-            ])
-            .with_columns([
-                pl.col("note").fill_null("unknown"),
-                (pl.col("balance") / 100).alias("balance"),
-                (pl.col("cleared_balance") / 100).alias("cleared_balance"),
-                (pl.col("uncleared_balance") / 100).alias("uncleared_balance"),
-            ])
-            .drop([
-                "transfer_payee_id", "direct_import_linked", "direct_import_in_error",
-                "last_reconciled_at", "debt_original_balance", "debt_interest_rates",
-                "debt_minimum_payments", "debt_escrow_amounts", "ingestion_date"
-            ])
-        )
-        # Write the DataFrame to a new parquet file
-        accounts_df.write_parquet(self.config['warehouse_data_path'] + '/accounts.parquet')
-
@@ -0,0 +1,144 @@
+import polars as pl
+import logging
+import os
+from datetime import date
+class Dimensions:
+    def __init__(self, config):
+        self.config = config
+        self.base_file_path = self.config['base_data_path']
+        os.makedirs(self.config['warehouse_data_path'], exist_ok=True)
+        
+    def get_full_file_path(self, file_name):
+        return f"{self.base_file_path}/{file_name}"
+        
+        
+class DimAccounts(Dimensions):
+    def __init__(self, config):
+        super().__init__(config)
+        self.file_path = self.get_full_file_path('accounts.parquet')
+        self.transform()
+
+    def transform(self):
+        # Read the parquet file into a polars DataFrame
+        accounts_df = pl.read_parquet(self.file_path)
+
+        # Transform the DataFrame
+        logging.info("Transforming the accounts DataFrame")
+        accounts_df = (
+            accounts_df
+            .with_columns([
+                pl.col("id").alias("account_id"),
+                pl.col("name").alias("account_name"),
+                pl.col("type").alias("account_type"),
+                pl.col("on_budget").alias("on_budget"),
+                pl.col("closed").alias("closed"),
+                pl.col("note").alias("note"),
+                pl.col("balance").alias("balance"),
+                pl.col("cleared_balance").alias("cleared_balance"),
+                pl.col("uncleared_balance").alias("uncleared_balance"),
+                pl.col("deleted").alias("deleted"),
+            ])
+            .with_columns([
+                pl.col("note").fill_null("unknown"),
+                (pl.col("balance") / 100).alias("balance"),
+                (pl.col("cleared_balance") / 100).alias("cleared_balance"),
+                (pl.col("uncleared_balance") / 100).alias("uncleared_balance"),
+            ])
+            .drop([
+                "transfer_payee_id", "direct_import_linked", "direct_import_in_error",
+                "last_reconciled_at", "debt_original_balance", "debt_interest_rates",
+                "debt_minimum_payments", "debt_escrow_amounts", "ingestion_date"
+            ])
+        )
+        # Write the DataFrame to a new parquet file
+        logging.info("Writing the transformed accounts DataFrame to parquet file")
+        accounts_df.write_parquet(self.config['warehouse_data_path'] + '/accounts.parquet')
+
+
+class DimCategories(Dimensions):
+    def __init__(self, config):
+        super().__init__(config)
+        self.file_path = self.get_full_file_path('categories.parquet')
+        self.transform()
+    
+    def transform(self):
+        # Read the parquet file into a polars DataFrame
+        categories_df = pl.read_parquet(self.file_path)
+        logging.info("Transforming the categories DataFrame")
+        # Select the required columns
+        categories_df = categories_df.select([
+            'id',
+            'name',
+            'category_group_name',
+            'hidden',
+            'note',
+            'budgeted',
+            'activity',
+            'balance',
+            'deleted'
+        ])
+        # Rename the columns
+        categories_df = categories_df.with_columns(pl.col('id').alias('category_id'))
+        categories_df = categories_df.with_columns(pl.col('name').alias('category_name'))
+
+        # Fill null values in the note column
+        categories_df = categories_df.with_columns(pl.col('note').fill_null('unknown'))
+
+        # Convert the balance, budgeted, and activity columns to decimal
+        categories_df = categories_df.with_columns(pl.col('balance') / 100)
+        categories_df = categories_df.with_columns(pl.col('budgeted') / 100)
+        categories_df = categories_df.with_columns(pl.col('activity') / 100)
+
+        # Write the DataFrame to a new parquet file
+        logging.info("Writing the transformed categories DataFrame to parquet file")
+        categories_df.write_parquet(self.config['warehouse_data_path'] + '/categories.parquet')
+
+class DimPayees(Dimensions):
+    def __init__(self, config):
+        super().__init__(config)
+        self.file_path = self.get_full_file_path('payees.parquet')
+        self.transform()
+    
+    def transform(self):
+        # Read the parquet file into a polars DataFrame
+        payees_df = pl.read_parquet(self.file_path)
+        logging.info("Transforming the payees DataFrame")
+        # Select the required columns
+        payees_df = payees_df.select([
+            'id',
+            'name',
+            'deleted'
+        ])
+        # Rename the columns
+        payees_df = payees_df.with_columns(pl.col('id').alias('payee_id'))
+        payees_df = payees_df.with_columns(pl.col('name').alias('payee_name'))
+
+        # Write the DataFrame to a new parquet file
+        logging.info("Writing the transformed payees DataFrame to parquet file")
+        payees_df.write_parquet(self.config['warehouse_data_path'] + '/payees.parquet')
+
+
+class DimDate(Dimensions):
+    def __init__(self, config):
+        super().__init__(config)
+        self.transform()
+    
+    def transform(self):
+        # Create a DataFrame with dates from 2020-01-01 to 2030-12-31
+        dates_df = pl.DataFrame({'date':pl.date_range(date(2020, 1, 1), date(2030, 12, 31), "1d", eager=True)})
+        
+        # Extract year, month, day, and weekday from the date column
+        dates_df = dates_df.with_columns([
+            pl.col('date').dt.year().alias('year'),
+            pl.col('date').dt.month().alias('month'),
+            pl.col('date').dt.day().alias('day'),
+            pl.col('date').dt.weekday().alias('weekday')
+        ])
+        # Create a new column to indicate if the date is a weekday or weekend
+        dates_df = dates_df.with_columns([
+            (pl.col('weekday') < 5).alias('is_weekday')  # True for weekdays (Monday to Friday), False for weekends (Saturday and Sunday)
+        ])
+        # Write the DataFrame to a new parquet file
+        logging.info("Writing the transformed dates DataFrame to parquet file")
+        dates_df.write_parquet(self.config['warehouse_data_path'] + '/dates.parquet')
+