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<?php
/**
* Specifies the minimal interface required of all logging implementations.
*/
interface Tribe__Log__Logger {
/**
* Indicates if the logger will work in the current environment.
*
* @return bool
*/
public function is_available();
/**
* Returns a 'human friendly' name for the logging implementation.
*
* @return string
*/
public function get_name();
/**
* Responsible for commiting the entry to the log (but only if the debug level
* is appropriate).
*
* @param string $entry
* @param string $type
* @param string $src
*/
public function log( $entry, $type = Tribe__Log::DEBUG, $src = '' );
/**
* Retrieve up to $limit most recent log entries in reverse chronological
* order. If $limit is a negative or zero value, there is no limit.
*
* Implementation-specific arguments can optionally be provided as a second
* parameter. This may include support for a 'log' param where an identifer
* obtained via the list_availalbe_logs() method is passed in order to query
* a specific archived log.
*
* @see Tribe__Log__Logger::list_available_logs()
*
* @param int $limit
* @param array $args
*
* @return array
*/
public function retrieve( $limit = 0, array $args = [] );
/**
* Returns a list of currently accessible logs (current first, oldest last).
*
* This can be useful if, for instance, a particular logger organizes logging
* by dates and keeps an archive of upto 1 week's worth of logs - in which case
* the array might look like:
*
* [ '2016-12-31',
* '2016-12-30',
* '2016-12-30',
* '2016-12-30',
* '2016-12-30', ... ]
*
* Note that a) the array may be empty and b) it won't necessarily contain
* date strings, it could contain identifiers like 'current', 'prev', 'prev2'
* or really anything the logging engine prefers.
*
* @return array
*/
public function list_available_logs();
/**
* Switches to the specified log.
*
* If optional param $create is true the logger will try to create a new log
* using the provided identifier if it doesn't already exist.
*
* @param mixed $log_identifier
* @param bool $create
*
* @return bool
*/
public function use_log( $log_identifier, $create = false );
/**
* Performs routine maintenance and cleanup work (such as log rotation)
* whenever it is called.
*/
public function cleanup();
}
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