Unify monitoring metrics values for child processes with those of the main process

[Rebits]

Description

The current monitoring class records metrics separately for the main process and its child processes, leading to potential inconsistencies and difficulties in data aggregation, comparison and analysis.
For example, in Release 4.8.0 - RC 4 - Vulnerability Detection performance test wazuh-indexer binary metrics split child metrics from main process:

To enhance the accuracy and usability of monitoring data, unify the metrics collected for child processes with those of the main process.

Tasks

• Design a unified monitoring strategy that consolidates child process metrics.

Validation

• Processes with multiple child processes appear in metrics as one..

[rafabailon]

Procedure

First the Monitor is launched. This is in charge of monitoring different data and registering them to, later, store them in a CSV file. A CSV file is generated for each process and for each subprocess.

These CSV files are used in the DataVisualizer to generate the plots. What the DataVisualizer does is to take the necessary parameters from each CSV to generate the plot. Each plot contains a specific data of each CSV. Therefore, in each plot, all the processes and subprocesses are painted.

Proposed Solution

Create a new method in DataVisualizer that takes data from all processes and unifies them. The data loaded in dataframe has to be unified so that, at the moment of generating the plots, it generates a plot with a single process that combines the data of all the processes and subprocesses.

A parameter must also be added to the DataVisualizer to decide when to unify the data. This parameter has to be included in the test pipeline to be able to choose whether to unify the data or not.

To check that it works, you have to run the pipeline telling it to unify the data and check the artifacts to see if the plots are correct.

Additional Information

The proposed solution is as simple as possible since the issue https://github.com/wazuh/wazuh-jenkins/issues/6571 will include the refactor of the DataVisualizer class.