Class NullLogger

Dummy implementation of logger that doesn't do anything.

It can be used in testing or in situations when logger is required but shall be disabled.

see: ILogger

Hierarchy

NullLogger

Implements

ILogger

Index

Constructors

constructor

Methods

Constructors

constructor

new NullLogger(): NullLogger

- Defined in log/NullLogger.ts:13
Creates a new instance of the logger.

Returns NullLogger

Methods

debug

debug(correlationId: string, message: string, ...args: any[]): void

Implementation of ILogger.debug
- Defined in log/NullLogger.ts:91
Logs a high-level debug information for troubleshooting.

Parameters
- correlationId: string
  
  (optional) transaction id to trace execution through call chain.
- message: string
  
  a human-readable message to log.
- Rest ...args: any[]
  
  arguments to parameterize the message.
Returns void

error

error(correlationId: string, error: Error, message: string, ...args: any[]): void

Implementation of ILogger.error
- Defined in log/NullLogger.ts:64
Logs recoverable application error.

Parameters
- correlationId: string
  
  (optional) transaction id to trace execution through call chain.
- error: Error
  
  an error object associated with this message.
- message: string
  
  a human-readable message to log.
- Rest ...args: any[]
  
  arguments to parameterize the message.
Returns void

fatal

fatal(correlationId: string, error: Error, message: string, ...args: any[]): void

Implementation of ILogger.fatal
- Defined in log/NullLogger.ts:54
Logs fatal (unrecoverable) message that caused the process to crash.

Parameters
- correlationId: string
  
  (optional) transaction id to trace execution through call chain.
- error: Error
  
  an error object associated with this message.
- message: string
  
  a human-readable message to log.
- Rest ...args: any[]
  
  arguments to parameterize the message.
Returns void

getLevel

getLevel(): LogLevel

Implementation of ILogger.getLevel
- Defined in log/NullLogger.ts:26
Gets the maximum log level. Messages with higher log level are filtered out.

Returns LogLevel

the maximum log level.

info

info(correlationId: string, message: string, ...args: any[]): void

Implementation of ILogger.info
- Defined in log/NullLogger.ts:82
Logs an important information message

Parameters
- correlationId: string
  
  (optional) transaction id to trace execution through call chain.
- message: string
  
  a human-readable message to log.
- Rest ...args: any[]
  
  arguments to parameterize the message.
Returns void

log

log(level: LogLevel, correlationId: string, error: Error, message: string, ...args: any[]): void

Implementation of ILogger.log
- Defined in log/NullLogger.ts:44
Logs a message at specified log level.

Parameters
- level: LogLevel
  
  a log level.
- correlationId: string
  
  (optional) transaction id to trace execution through call chain.
- error: Error
  
  an error object associated with this message.
- message: string
  
  a human-readable message to log.
- Rest ...args: any[]
  
  arguments to parameterize the message.
Returns void

setLevel

setLevel(value: LogLevel): void

Implementation of ILogger.setLevel
- Defined in log/NullLogger.ts:33
Set the maximum log level.

Parameters
- value: LogLevel
  
  a new maximum log level.
Returns void

trace

trace(correlationId: string, message: string, ...args: any[]): void

Implementation of ILogger.trace
- Defined in log/NullLogger.ts:100
Logs a low-level debug information for troubleshooting.

Parameters
- correlationId: string
  
  (optional) transaction id to trace execution through call chain.
- message: string
  
  a human-readable message to log.
- Rest ...args: any[]
  
  arguments to parameterize the message.
Returns void

warn

warn(correlationId: string, message: string, ...args: any[]): void

Implementation of ILogger.warn
- Defined in log/NullLogger.ts:73
Logs a warning that may or may not have a negative impact.

Parameters
- correlationId: string
  
  (optional) transaction id to trace execution through call chain.
- message: string
  
  a human-readable message to log.
- Rest ...args: any[]
  
  arguments to parameterize the message.
Returns void

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