Hi All, 

In the last days I noticed that we have a big confusion with the main goal of 
the Synchronizer. This is in part due to mixed usage of the term Synchronizer 
in the project. Also, most of us don’t really understand the difference between 
synchronizer and transformer.

After much discussion, it was decided to change and clarify the terms and the 
package structure – see more below.

So let’s make order in this mess:

Synchronizer – Responsible for importing data into Vitrage. It is not supposed 
to make any change in the data. 
Transformer – Responsible for transforming the data retrieved by the 
synchronizer into a Vitrage entity (vertex) and its neighbors. Each neighbor is 
just a placeholder vertex and edge.

Recently, we realized that the terminology we use is incorrect: we use 
synchronizer name for both: 
 - General name of the whole process (connect to data source -> import the data 
into Vitrage -> push it to event queue -> and transform it to graph entities)
 - For the actual connection to the data source (i.e., connection to Nova)

So we decided to have some name changes:
1. Datasource – describes the data source 2. Driver – describes the component 
which connect to data source itself 3. MessageFormat/ FormatType / EventFormat 
- (not closed yet) instead of SyncMode. Any suggestion is welcome… 4. Name – 
instead of SyncType 5. No more using the word “plugins”

This change causes a change the packages structure in the project. 
Before the structure was:

- Synchronizer
  - Plugins
    - Data source name           
      - Transformer
      - synchronizer

The new structure is:

- Datasources
  - Data source name
    - Transformer
    - driver
                                                
Most of the refactoring has already done and pushed.

Action items:
1. To decide about new name for SyncMode and change it in the code 
2. SyncType refactoring 
3. Documentation

Liat. 



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