Custom Metadata in Tarantool

It is often necessary to assign additional metadata to the faces extracted from images uploaded to the record index and now stored in the feature vector database.

In this section:

To assign custom meta fields to the face objects, do the following:

Prepare the list of custom meta fields to assign.
Open the /etc/findface-security/config.py configuration file.
```
sudo vi /etc/findface-security/config.py
```

In the FFSECURITY section, uncomment the CUSTOM_FIELDS -> face_object section and modify the exemplary content, considering the following:

field_name: field’s name;
type: data type;
default: field’s default value. If a default value exceeds 1e14 - 1, use a string data type to specify it, for example, "123123.." instead of 123123...

FFSECURITY = {

...

    # -- Custom model fields --
    ...
    # Edit CUSTOM_FIELDS -> `face_object` section to customize face object fields.
    ...
    # 'CUSTOM_FIELDS': {
          ...
          'face_object': {
              'items': [
                  {
                      "field_name": "tag_name_1",
                      "type": "string",
                      "default": "change_me"
                  },
                  {
                      "field_name": "tag_name_2",
                      "type": "uint",
                      "default": 123
                  },
                  {
                      "field_name": "tag_name_3",
                      "type": "bool",
                      "default": True
                  },
              ]
          }

      }

Add the new meta fields to the feature vector database structure.
Restart the findface-security service.
```
sudo systemctl restart findface-security.service
```
You can work with the new meta fields through HTTP API using the objects/faces/ methods.