fix: skipping data loading in case no new processed data available!

Walkthrough

The recent updates across multiple Python files enhance the ETL processes for Discord data extraction by incorporating detailed logging statements. These logs provide insights into the status and conditions of the data extraction, such as the availability of previous data and the extraction period, ensuring better traceability and debugging capabilities.

Changes

Files/Paths	Change Summary
`dags/analyzer_helper/discord/discord_extract_raw_infos.py`	Added logging for data extraction conditions, imported `logging`, modified `extract` method to include `prefix` variable and various logging messages.
`dags/analyzer_helper/discord/discord_extract_raw_members.py`	Added logging for extraction process, imported `logging`.
`dags/discord_analyzer_etl.py`	Added logging statements for raw data and members extraction, adjusted logic for loading data into the database based on the presence of data.

Sequence Diagram(s)

sequenceDiagram
    participant Scheduler
    participant DiscordAPI
    participant Logger
    participant Database

    Scheduler->>DiscordAPI: Request data extraction
    DiscordAPI->>Logger: Log status - checking previous data
    alt Previous data exists
        DiscordAPI->>Scheduler: Send extracted data
        Scheduler->>Logger: Log data extraction completion
        Scheduler->>Database: Load data if available
        Database-->>Logger: Log data loading status
    else No previous data
        Logger-->>Scheduler: Log no data available
    end

Poem

🎩 In the world of code, where data flows,
Logs now tell where the process goes.
Extracting infos and members with care,
Our ETL shines, now more aware.
Debugging's a breeze with logs in sight,
Celebrate the changes, everything's right. 🎩

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TogetherCrew / airflow-dags