Break out usage log note fields into separate columns

[1fifoto]

In server.js decode of URL = '/api/v1/usage_log' we should extract from the var note into separate columns:

• tag (from var note.tag)
• action (from var note.action)
• event_value (from var note.note.event_value)
• event_label (from var note.note.event_label)

[1fifoto]

Update database with additional tag, action, event_value, and event_label columns.

CREATE TABLE `usage_log` (
  `id` int(11) NOT NULL,
  `created_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `updated_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  `ip_address` varchar(64) COLLATE utf8_unicode_ci NOT NULL,
  `note` longtext COLLATE utf8_unicode_ci DEFAULT NULL,
  `tag` longtext COLLATE utf8_unicode_ci DEFAULT NULL,
  `action` longtext COLLATE utf8_unicode_ci DEFAULT NULL,
  `event_value` int(11) DEFAULT NULL,
  `event_label` longtext COLLATE utf8_unicode_ci DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

Leave the current note column in the table for the time being.

Update invalid JSON by changing note's carriage-returns to '\n' string

UPDATE `usage_log` 
 SET `note`=REPLACE(`note`,'\n','\\n') 

Extract JSON from note column and inject it into tag, action, event_value and event_label columns

UPDATE `usage_log` 
SET 
`tag`=JSON_EXTRACT(`note`,'$.tag'), 
`action`=JSON_EXTRACT(`note`,'$.action'),
`event_value`=JSON_EXTRACT(`note`,'$.note.event_value'),
`event_label`=JSON_EXTRACT(`note`,'$.note.event_label')