Class CakeLog

Logs messages to configured Log adapters. One or more adapters can be configured using CakeLogs's methods. If you don't configure any adapters, and write to the logs a default FileLog will be autoconfigured for you.

Configuring Log adapters

You can configure log adapters in your applications bootstrap.php file. A sample configuration would look like:

{{{ CakeLog::config('my_log', array('engine' => 'File')); }}}

See the documentation on CakeLog::config() for more detail.

Writing to the log

You write to the logs using CakeLog::write(). See its documentation for more information.

Logging Levels

By default CakeLog supports all the log levels defined in RFC 5424. When logging messages you can either use the named methods, or the correct constants with write():

{{{ CakeLog::error('Something horrible happened'); CakeLog::write(LOG_ERR, 'Something horrible happened'); }}}

If you require custom logging levels, you can use CakeLog::levels() to append additional logging levels.

Logging scopes

When logging messages and configuring log adapters, you can specify 'scopes' that the logger will handle. You can think of scopes as subsystems in your application that may require different logging setups. For example in an e-commerce application you may want to handle logged errors in the cart and ordering subsystems differently than the rest of the application. By using scopes you can control logging for each part of your application and still keep standard log levels.

See CakeLog::config() and CakeLog::write() for more information on scopes

Package: Cake\Log
Copyright: Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
License: MIT License
Location: Cake/Log/CakeLog.php

Properties summary

$_Collection protected static

LogEngineCollection

LogEngineCollection class
$_defaultLevels protected static

array

Default log levels as detailed in RFC 5424 http://tools.ietf.org/html/rfc5424
$_levelMap protected static

array

Mapped log levels
$_levels protected static

array

Active log levels for this instance.

Method Summary

_autoConfig() protected static

Configures the automatic/default stream a FileLog.
_init() protected static

initialize ObjectCollection
alert() public static

Convenience method to log alert messages
config() public static

Configure and add a new logging stream to CakeLog You can use add loggers from app/Log/Engine use app.loggername, or any plugin/Log/Engine using plugin.loggername.
configured() public static

Returns the keynames of the currently active streams
critical() public static

Convenience method to log critical messages
debug() public static

Convenience method to log debug messages
defaultLevels() public static

Reset log levels to the original value
disable() public static

Disable stream. Disabling a stream will prevent that log stream from receiving any messages until its re-enabled.
drop() public static

Removes a stream from the active streams. Once a stream has been removed it will no longer have messages sent to it.
emergency() public static

Convenience method to log emergency messages
enable() public static

Enable stream. Streams that were previously disabled can be re-enabled with this method.
enabled() public static

Checks whether $streamName is enabled
error() public static

Convenience method to log error messages
info() public static

Convenience method to log info messages
levels() public static

Gets/sets log levels
notice() public static

Convenience method to log notice messages
stream() public static

Gets the logging engine from the active streams.
warning() public static

Convenience method to log warning messages
write() public static

Writes the given message and type to all of the configured log adapters. Configured adapters are passed both the $type and $message variables. $type is one of the following strings/values.

Method Detail

_autoConfig() protected static ¶

_autoConfig( )

Configures the automatic/default stream a FileLog.

_init() protected static ¶

_init( )

initialize ObjectCollection

alert() public static ¶

alert( string $message , string|array $scope = array() )

Convenience method to log alert messages

Parameters

string $message: log message
string|array $scope optional array(): The scope(s) a log message is being created in. See CakeLog::config() for more information on logging scopes.

Returns

boolean
Success

config() public static ¶

config( string $key , array $config )

Configure and add a new logging stream to CakeLog You can use add loggers from app/Log/Engine use app.loggername, or any plugin/Log/Engine using plugin.loggername.

Usage:

{{{ CakeLog::config('second_file', array( 'engine' => 'File', 'path' => '/var/logs/my_app/' )); }}}

Will configure a FileLog instance to use the specified path. All options that are not engine are passed onto the logging adapter, and handled there. Any class can be configured as a logging adapter as long as it implements the methods in CakeLogInterface.

Logging levels

When configuring loggers, you can set which levels a logger will handle. This allows you to disable debug messages in production for example:

{{{ CakeLog::config('default', array( 'engine' => 'File', 'path' => LOGS, 'levels' => array('error', 'critical', 'alert', 'emergency') )); }}}

The above logger would only log error messages or higher. Any other log messages would be discarded.

Logging scopes

When configuring loggers you can define the active scopes the logger is for. If defined only the listed scopes will be handled by the logger. If you don't define any scopes an adapter will catch all scopes that match the handled levels.

{{{ CakeLog::config('payments', array( 'engine' => 'File', 'types' => array('info', 'error', 'warning'), 'scopes' => array('payment', 'order') )); }}}

The above logger will only capture log entries made in the payment and order scopes. All other scopes including the undefined scope will be ignored. Its important to remember that when using scopes you must also define the types of log messages that a logger will handle. Failing to do so will result in the logger catching all log messages even if the scope is incorrect.

Parameters

string $key: The keyname for this logger, used to remove the logger later.
array $config: Array of configuration information for the logger

Returns

boolean
success of configuration.

Throws

CakeLogException

configured() public static ¶

configured( )

Returns the keynames of the currently active streams

Returns

array
Array of configured log streams.

critical() public static ¶

critical( string $message , string|array $scope = array() )

Convenience method to log critical messages

Parameters

string $message: log message
string|array $scope optional array(): The scope(s) a log message is being created in. See CakeLog::config() for more information on logging scopes.

Returns

boolean
Success

debug() public static ¶

debug( string $message , string|array $scope = array() )

Convenience method to log debug messages

Parameters

string $message: log message
string|array $scope optional array(): The scope(s) a log message is being created in. See CakeLog::config() for more information on logging scopes.

Returns

boolean
Success

defaultLevels() public static ¶

defaultLevels( )

Reset log levels to the original value

Returns

array
Default log levels

disable() public static ¶

disable( string $streamName )

Disable stream. Disabling a stream will prevent that log stream from receiving any messages until its re-enabled.

Parameters

string $streamName: to disable

Throws

CakeLogException

drop() public static ¶

drop( string $streamName )

Removes a stream from the active streams. Once a stream has been removed it will no longer have messages sent to it.

Parameters

string $streamName: Key name of a configured stream to remove.

emergency() public static ¶

emergency( string $message , string|array $scope = array() )

Convenience method to log emergency messages

Parameters

string $message: log message
string|array $scope optional array(): The scope(s) a log message is being created in. See CakeLog::config() for more information on logging scopes.

Returns

boolean
Success

enable() public static ¶

enable( string $streamName )

Enable stream. Streams that were previously disabled can be re-enabled with this method.

Parameters

string $streamName: to enable

Throws

CakeLogException

enabled() public static ¶

enabled( string $streamName )

Checks whether $streamName is enabled

Parameters

string $streamName: to check

Returns

boolean

Throws

CakeLogException

error() public static ¶

error( string $message , string|array $scope = array() )

Convenience method to log error messages

Parameters

string $message: log message
string|array $scope optional array(): The scope(s) a log message is being created in. See CakeLog::config() for more information on logging scopes.

Returns

boolean
Success

info() public static ¶

info( string $message , string|array $scope = array() )

Convenience method to log info messages

Parameters

string $message: log message
string|array $scope optional array(): The scope(s) a log message is being created in. See CakeLog::config() for more information on logging scopes.

Returns

boolean
Success

levels() public static ¶

levels( array $levels = array() , boolean $append = true )

Gets/sets log levels

Call this method without arguments, eg: CakeLog::levels() to obtain current level configuration.

To append additional level 'user0' and 'user1' to to default log levels:

{{{ CakeLog::levels(array('user0, 'user1')); // or CakeLog::levels(array('user0, 'user1'), true); }}}

will result in:

{{{ array( 0 => 'emergency', 1 => 'alert', ... 8 => 'user0', 9 => 'user1', ); }}}

To set/replace existing configuration, pass an array with the second argument set to false.

{{{ CakeLog::levels(array('user0, 'user1'), false); }}}

will result in:

{{{ array( 0 => 'user0', 1 => 'user1', ); }}}

Parameters

array $levels optional array(): array
boolean $append optional true: true to append, false to replace

Returns

array
Active log levels

notice() public static ¶

notice( string $message , string|array $scope = array() )

Convenience method to log notice messages

Parameters

string $message: log message
string|array $scope optional array(): The scope(s) a log message is being created in. See CakeLog::config() for more information on logging scopes.

Returns

boolean
Success

stream() public static ¶

stream( string $streamName )

Gets the logging engine from the active streams.

Parameters

string $streamName: Key name of a configured stream to get.

Returns

mixed
instance of BaseLog or false if not found

See

BaseLog

warning() public static ¶

warning( string $message , string|array $scope = array() )

Convenience method to log warning messages

Parameters

string $message: log message
string|array $scope optional array(): The scope(s) a log message is being created in. See CakeLog::config() for more information on logging scopes.

Returns

boolean
Success

write() public static ¶

write( integer|string $type , string $message , string|array $scope = array() )

Writes the given message and type to all of the configured log adapters. Configured adapters are passed both the $type and $message variables. $type is one of the following strings/values.

Types:

LOG_EMERG => 'emergency',
LOG_ALERT => 'alert',
LOG_CRIT => 'critical',
LOG_ERR => 'error',
LOG_WARNING => 'warning',
LOG_NOTICE => 'notice',
LOG_INFO => 'info',
LOG_DEBUG => 'debug',

Usage:

Write a message to the 'warning' log:

CakeLog::write('warning', 'Stuff is broken here');

Parameters

integer|string $type: Type of message being written. When value is an integer or a string matching the recognized levels, then it will be treated log levels. Otherwise it's treated as scope.
string $message: Message content to log
string|array $scope optional array(): The scope(s) a log message is being created in. See CakeLog::config() for more information on logging scopes.

Returns

boolean
Success

Properties detail

`$_Collection` ¶

protected static LogEngineCollection

LogEngineCollection class

`$_defaultLevels` ¶

protected static array

Default log levels as detailed in RFC 5424 http://tools.ietf.org/html/rfc5424

array(
    'emergency' => LOG_EMERG,
    'alert' => LOG_ALERT,
    'critical' => LOG_CRIT,
    'error' => LOG_ERR,
    'warning' => LOG_WARNING,
    'notice' => LOG_NOTICE,
    'info' => LOG_INFO,
    'debug' => LOG_DEBUG,
)

`$_levelMap` ¶

protected static array

Mapped log levels

`$_levels` ¶

protected static array

Active log levels for this instance.

Packages

Classes

Interfaces

Class CakeLog

Configuring Log adapters

Writing to the log

Logging Levels

Logging scopes

Properties summary

Method Summary

_autoConfig() protected static

_init() protected static

alert() public static

config() public static

configured() public static

critical() public static

debug() public static

defaultLevels() public static

disable() public static

drop() public static

emergency() public static

enable() public static

enabled() public static

error() public static

info() public static

levels() public static

notice() public static

stream() public static

warning() public static

write() public static

Method Detail

_autoConfig() protected static ¶

_init() protected static ¶

alert() public static ¶

Parameters

Returns

config() public static ¶

Usage:

Logging levels

Logging scopes

Parameters

Returns

Throws

configured() public static ¶

Returns

critical() public static ¶

Parameters

Returns

debug() public static ¶

Parameters

Returns

defaultLevels() public static ¶

Returns

disable() public static ¶

Parameters

Throws

drop() public static ¶

Parameters

emergency() public static ¶

Parameters

Returns

enable() public static ¶

Parameters

Throws

enabled() public static ¶

Parameters

Returns

Throws

error() public static ¶

Parameters

Returns

info() public static ¶

Parameters

Returns

levels() public static ¶

Parameters

Returns

notice() public static ¶

Parameters

Returns

`$_Collection` ¶

`$_defaultLevels` ¶

`$_levelMap` ¶

`$_levels` ¶