Final Cedarling Log Design

Log Schema

Name	Description	Type
id	unique identifier for this event	string
time	Time of decision	integer
logkind	decision, system, metric	string
request_id	unique id of the request	string
pdp_id	unique id of cedarling	string
application_id	name of application from bootstrap properties	string
decision	ALLOW or DENY	string
Principal	Cedar principal	string
Action	Cedar Action	string
Resource	Cedar Resource	string
Context	Cedar Context	string
diagnostics	Any resulting diagnostics	string
msg	Any other message	string

Log Interface

• subscribeToLogStream() - Enables real-time log streaming, where developers can subscribe to a stream of logs as they are generated.
• getLogById(id: String) - get specific log
• getLogIds() - returns a list of all log ids.

Cedarling log types

In Cedarling-Nativity-Plan Bootstrap properties we have variable CEDARLING_LOG_TYPE that may contain next values:

• off
• memory
• std_out
• lock

Log type off

This log type is do nothing. It means that all logs will be ignored.

Log type memory

This log type holds all logs in database (in memory/or not) with some eviction policy.

Log type std_out

This log type writes all logs to stdout or stderr (It should be discussed). Without storing or additional handling log messages.

For note:

• stdout - The standard output stream, which is used for normal output from the program.
• stderr - The standard error stream, which is used for error messages and diagnostics issued by the program.

Log type lock

This log type will send logs to the server (corporate feature). Will be discussed later.