82 lines
2.1 KiB
PHP
82 lines
2.1 KiB
PHP
<?php
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declare(strict_types=1);
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namespace OpenTelemetry\SDK\Metrics\Aggregation;
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use OpenTelemetry\Context\ContextInterface;
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use OpenTelemetry\SDK\Common\Attribute\AttributesInterface;
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use OpenTelemetry\SDK\Metrics\AggregationInterface;
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use OpenTelemetry\SDK\Metrics\Data;
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/**
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* @implements AggregationInterface<LastValueSummary>
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*/
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final class LastValueAggregation implements AggregationInterface
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{
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public function initialize(): LastValueSummary
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{
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return new LastValueSummary(null, 0);
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}
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/**
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* @param LastValueSummary $summary
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*/
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public function record($summary, $value, AttributesInterface $attributes, ContextInterface $context, int $timestamp): void
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{
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if ($summary->value === null || $timestamp >= $summary->timestamp) {
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$summary->value = $value;
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$summary->timestamp = $timestamp;
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}
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}
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/**
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* @param LastValueSummary $left
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* @param LastValueSummary $right
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*/
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public function merge($left, $right): LastValueSummary
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{
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return $right->timestamp >= $left->timestamp ? $right : $left;
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}
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/**
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* @param LastValueSummary $left
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* @param LastValueSummary $right
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*/
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public function diff($left, $right): LastValueSummary
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{
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return $right->timestamp >= $left->timestamp ? $right : $left;
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}
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/**
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* @param array<LastValueSummary> $summaries
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*/
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public function toData(
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array $attributes,
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array $summaries,
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array $exemplars,
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int $startTimestamp,
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int $timestamp,
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$temporality
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): Data\Gauge {
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$dataPoints = [];
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foreach ($attributes as $key => $dataPointAttributes) {
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if ($summaries[$key]->value === null) {
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continue;
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}
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$dataPoints[] = new Data\NumberDataPoint(
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$summaries[$key]->value,
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$dataPointAttributes,
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$startTimestamp,
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$timestamp,
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$exemplars[$key] ?? [],
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);
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}
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return new Data\Gauge(
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$dataPoints,
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);
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}
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}
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