17 lines
426 B
PHP
17 lines
426 B
PHP
<?php
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declare(strict_types=1);
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namespace OpenTelemetry\API\Metrics;
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interface ObservableUpDownCounterInterface
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{
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/**
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* @param callable(ObserverInterface): void $callback function responsible for
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* reporting the measurements (as absolute values)
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* @return ObservableCallbackInterface token to detach callback
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*/
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public function observe(callable $callback): ObservableCallbackInterface;
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}
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