System logging protocol (syslog) audit logs

Various components in GDC produce their audit logs using a standard syslog format according to the RFC-5424 specification. For more information, see https://datatracker.ietf.org/doc/html/rfc5424.

JSON representation

{
  "pid": string,
  "pri": string,
  "hostname": string,
  "ident": string,
  "msgid": string,
  "extradata": string,
  "message": string
}

Fields
`pid`	`string` The process ID of the application that originated the message. For example, `"1"`
`pri`	`string` Priority value. For example, `"46"`
`hostname`	`string` The component that originally sent the syslog message. For example, `"anthos-audit-logs-forwarder-2kbnd"`
`ident`	`string` The device or application that originated the message. For example, `"/logging-prober-sidecar"`
`msgid`	`string` The type of message. For example, `"audit-log"`
`extradata`	`string` Additional custom information. For example, `"[exampleSDID@20224 iut=\"3\" eventSource=\"Application\" eventID=\"11211\"]"`
`message`	`string` A free-form message that provides information about the event. For example, "{\"time\":\"2024-01-24T17:24:55.076954537Z\",\"auditID\":\"7ab3bf57-67cb-4373-bbf6-b3ad0835cc65\",\"user\":{\"identity\":\"audit-log-writer\"},\"resource\":\"41075\",\"action\":\"-\",\"description\":\"This is a prober testing the functionality of the syslog endpoint\",\"userAgent\":\"audit-log-prober\",\"response\":\"-\",\"_gdch_org\":\"-\",\"_gdch_service\":\"audit-log-prober\"}"