data_fetcher
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| data_fetcher [2025/04/25 23:40] – external edit 127.0.0.1 | data_fetcher [2025/06/06 01:46] (current) – [Data Fetcher] eagleeyenebula | ||
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| ====== Data Fetcher ====== | ====== Data Fetcher ====== | ||
| - | * **[[https:// | + | **[[https:// |
| - | The **Data Fetcher** component is a lightweight and modular system designed to retrieve data from various sources such as local files or remote databases. | + | The **Data Fetcher** component is a lightweight and modular system designed to retrieve data from various sources such as local files, remote databases, and external APIs. Built with scalability in mind, it abstracts the complexities of data retrieval behind a consistent interface, enabling developers |
| + | {{youtube> | ||
| + | |||
| + | ------------------------------------------------------------- | ||
| + | |||
| + | The component is built using a plug-and-play architecture, | ||
| ===== Overview ===== | ===== Overview ===== | ||
| Line 25: | Line 30: | ||
| 1. **Ease of Access**: | 1. **Ease of Access**: | ||
| - | | + | * Simplify the process of retrieving input data from multiple sources. |
| 2. **Reusability**: | 2. **Reusability**: | ||
| - | | + | * Provide a reusable module that can adapt to various workflows. |
| 3. **Debuggability**: | 3. **Debuggability**: | ||
| - | Allow easy troubleshooting of input issues using detailed logs. | + | * Allow easy troubleshooting of input issues using detailed logs. |
| 4. **Scalability**: | 4. **Scalability**: | ||
| - | Lay the foundation for fetching from larger systems like databases, APIs, or cloud storages. | + | * Lay the foundation for fetching from larger systems like databases, APIs, or cloud storages. |
| ===== System Design ===== | ===== System Design ===== | ||
| Line 39: | Line 44: | ||
| ==== Core Class: DataFetcher ==== | ==== Core Class: DataFetcher ==== | ||
| - | ```python | + | < |
| + | python | ||
| import logging | import logging | ||
| Line 60: | Line 66: | ||
| logging.info(" | logging.info(" | ||
| return data | return data | ||
| - | ``` | + | </ |
| ==== Design Principles ==== | ==== Design Principles ==== | ||
| Line 77: | Line 83: | ||
| ==== Example 1: Fetching Data from a Local File ==== | ==== Example 1: Fetching Data from a Local File ==== | ||
| - | Use the `fetch_from_file` method to retrieve data from a given file path. | + | Use the **fetch_from_file** method to retrieve data from a given file path. |
| - | ```python | + | < |
| + | python | ||
| from data_fetcher import DataFetcher | from data_fetcher import DataFetcher | ||
| Line 93: | Line 100: | ||
| except Exception as e: | except Exception as e: | ||
| print(f" | print(f" | ||
| - | ``` | + | </ |
| **Expected Output**: | **Expected Output**: | ||
| + | < | ||
| The contents of the file will be printed if the file exists; otherwise, an error message will be displayed. | The contents of the file will be printed if the file exists; otherwise, an error message will be displayed. | ||
| + | </ | ||
| ==== Example 2: Fetching from a Non-Existent File ==== | ==== Example 2: Fetching from a Non-Existent File ==== | ||
| Handle errors gracefully when attempting to fetch from a file that does not exist. | Handle errors gracefully when attempting to fetch from a file that does not exist. | ||
| - | ```python | + | < |
| + | python | ||
| from data_fetcher import DataFetcher | from data_fetcher import DataFetcher | ||
| Line 114: | Line 123: | ||
| except Exception as e: | except Exception as e: | ||
| print(f" | print(f" | ||
| - | ``` | + | </ |
| **Error Logging Output**: | **Error Logging Output**: | ||
| - | ``` | + | < |
| ERROR - FileNotFoundError: | ERROR - FileNotFoundError: | ||
| - | ``` | + | </ |
| ==== Example 3: Logging Integration ==== | ==== Example 3: Logging Integration ==== | ||
| Line 125: | Line 134: | ||
| Enable logging to track file-fetching operations. | Enable logging to track file-fetching operations. | ||
| - | ```python | + | < |
| + | python | ||
| import logging | import logging | ||
| from data_fetcher import DataFetcher | from data_fetcher import DataFetcher | ||
| Line 143: | Line 153: | ||
| except Exception as e: | except Exception as e: | ||
| print(f" | print(f" | ||
| - | ``` | + | </ |
| **Log File Output (data_fetcher.log)**: | **Log File Output (data_fetcher.log)**: | ||
| - | ``` | + | < |
| 2023-10-10 14:31:11 - INFO - Fetching data from file: sample_data.txt... 2023-10-10 14:31:11 - INFO - Data fetched successfully. | 2023-10-10 14:31:11 - INFO - Fetching data from file: sample_data.txt... 2023-10-10 14:31:11 - INFO - Data fetched successfully. | ||
| - | ``` | + | </ |
| ==== Example 4: Extending DataFetcher for New Sources ==== | ==== Example 4: Extending DataFetcher for New Sources ==== | ||
| - | Extend the `DataFetcher` to include functionality for fetching data from a database. | + | Extend the **DataFetcher** to include functionality for fetching data from a database. |
| - | ```python | + | < |
| + | python | ||
| import sqlite3 | import sqlite3 | ||
| Line 181: | Line 192: | ||
| logging.error(f" | logging.error(f" | ||
| raise | raise | ||
| - | ``` | + | </ |
| **Usage**: | **Usage**: | ||
| - | ```python | + | < |
| + | python | ||
| db_path = " | db_path = " | ||
| query = " | query = " | ||
| Line 191: | Line 203: | ||
| results = ExtendedDataFetcher.fetch_from_database(db_path, | results = ExtendedDataFetcher.fetch_from_database(db_path, | ||
| print(" | print(" | ||
| - | ``` | + | </ |
| ===== Advanced Features ===== | ===== Advanced Features ===== | ||
| 1. **Fetching from Remote Databases**: | 1. **Fetching from Remote Databases**: | ||
| - | | + | * Extend the class to support connections to remote SQL databases (e.g., |
| 2. **Cloud Data Fetching**: | 2. **Cloud Data Fetching**: | ||
| - | Add methods to fetch data from AWS S3, Google Cloud Storage, or Azure Blob Storage using their respective SDKs. | + | * Add methods to fetch data from **AWS S3**, **Google Cloud Storage**, or Azure Blob Storage using their respective |
| 3. **Streaming Large Data Files**: | 3. **Streaming Large Data Files**: | ||
| - | | + | * Implement streaming support for reading large files line by line to optimize memory usage. |
| - | + | < | |
| - | ```python | + | |
| | | ||
| def fetch_from_file_stream(file_path): | def fetch_from_file_stream(file_path): | ||
| Line 211: | Line 223: | ||
| for line in file: | for line in file: | ||
| yield line.strip() | yield line.strip() | ||
| - | ``` | + | </ |
| 4. **Data Transformation**: | 4. **Data Transformation**: | ||
| - | | + | * Provide optional transformation pipelines to preprocess data during fetch operations. |
| ===== Use Cases ===== | ===== Use Cases ===== | ||
| Line 221: | Line 233: | ||
| 1. **Data Ingestion Pipelines**: | 1. **Data Ingestion Pipelines**: | ||
| - | Fetch raw data for preprocessing and processing in AI/ML workflows. | + | * Fetch raw data for preprocessing and processing in AI/ML workflows. |
| 2. **Database Queries**: | 2. **Database Queries**: | ||
| - | | + | * Retrieve tabular data from local or remote database systems. |
| 3. **Configuration File Management**: | 3. **Configuration File Management**: | ||
| - | Read and parse configuration, | + | * Read and parse configuration, |
| 4. **Integration with APIs**: | 4. **Integration with APIs**: | ||
| - | | + | * Extend the class to fetch data from **REST/ |
| ===== Future Enhancements ===== | ===== Future Enhancements ===== | ||
| Line 244: | Line 256: | ||
| ===== Conclusion ===== | ===== Conclusion ===== | ||
| - | The **Data Fetcher** is a lightweight yet powerful system for integrating data retrieval into workflows. Its modular | + | The **Data Fetcher** is a lightweight yet powerful system for integrating data retrieval into workflows, offering a clean and efficient solution for accessing structured and unstructured data across diverse environments. Its modular |
| + | |||
| + | Equipped with built-in | ||
data_fetcher.1745624454.txt.gz · Last modified: 2025/04/25 23:40 by 127.0.0.1
