<?php if ( ! defined( 'ABSPATH' ) ) exit;

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/**

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* Describes a logger instance

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*

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* The message MUST be a string or object implementing __toString().

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*

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* The message MAY contain placeholders in the form: {foo} where foo

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* will be replaced by the context data in key "foo".

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*

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* The context array can contain arbitrary data, the only assumption that

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* can be made by implementors is that if an Exception instance is given

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* to produce a stack trace, it MUST be in a key named "exception".

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*

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* See https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md

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* for the full interface specification.

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*/

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interface NF_Abstracts_LoggerInterface

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{

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/**

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* System is unusable.

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*

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* @param string $message

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* @param array $context

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* @return null

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*/

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public function emergency($message, array $context = array());

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/**

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* Action must be taken immediately.

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*

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* Example: Entire website down, database unavailable, etc. This should

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* trigger the SMS alerts and wake you up.

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*

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* @param string $message

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* @param array $context

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* @return null

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*/

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public function alert($message, array $context = array());

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/**

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* Critical conditions.

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*

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* Example: Application component unavailable, unexpected exception.

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*

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* @param string $message

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* @param array $context

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* @return null

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*/

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public function critical($message, array $context = array());

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/**

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* Runtime errors that do not require immediate action but should typically

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* be logged and monitored.

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*

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* @param string $message

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* @param array $context

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* @return null

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*/

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public function error($message, array $context = array());

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/**

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* Exceptional occurrences that are not errors.

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*

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* Example: Use of deprecated APIs, poor use of an API, undesirable things

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* that are not necessarily wrong.

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*

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* @param string $message

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* @param array $context

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* @return null

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*/

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public function warning($message, array $context = array());

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/**

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* Normal but significant events.

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*

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* @param string $message

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* @param array $context

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* @return null

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*/

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public function notice($message, array $context = array());

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/**

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* Interesting events.

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*

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* Example: User logs in, SQL logs.

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*

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* @param string $message

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* @param array $context

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* @return null

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*/

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public function info($message, array $context = array());

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/**

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* Detailed debug information.

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*

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* @param string $message

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* @param array $context

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* @return null

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*/

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public function debug($message, array $context = array());

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/**

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* Logs with an arbitrary level.

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*

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* @param mixed $level

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* @param string $message

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* @param array $context

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* @return null

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*/

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public function log($level, $message, array $context = array());

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}

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