Logging API impl for command-line usage; to be used like console.js but
- doesn't log to stdout on
log()andinfo()functions (using stderr instead because we output the parsing/processing result to stdout in command-line app) log()will log withNOTICEpriority whereasinfo()will log withINFOpriorityINFOpriority messages and below are suppressedINFO-level logging isn't for ad-hoc messages but for "vital" messages; this is used eg. for structured log messages relating external request tokens with internally used tokens (such as request identifiers to node domain identities or thread ids etc.) and interrelating internally used tokens with each other, so these are vital to interpret a log by external tools; note as per the default priority filter for command line apps (see above), these messages aren't output as there's only one request context in command-line apps.
Constants
| Name | Description |
|---|---|
| log_level | Enum-like filter for syslog priority with possible values ERROR, WARN, NOTICE, INFO, DEBUG, TRACE (in descending order of priority). |
Member Details
- debug() static
-
Logs text at DEBUG logging level.
- error() static
-
Logs text at ERROR logging level.
- info() static
-
Logs text at INFO logging level.
- log() static
-
Logs text at LOG logging level.
- log_level static
-
Enum-like filter for syslog priority with possible values ERROR, WARN, NOTICE, INFO, DEBUG, TRACE (in descending order of priority).
Suppresses messages with priority below
NOTICE(ie. INFO, DEBUG, TRACE) by default (as per syslog defaults).TODO: incorporate in doc/clarify where this is actually used
- trace() static
-
Logs text at TRACE logging level.
- warn() static
-
Logs text at WARN logging level.