From cdd7ad020e165fe680703b6d3319b908b682fb7a Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <fox@fakecake.org>
Date: Fri, 20 Oct 2023 17:12:29 +0300
Subject: jaeger-client -> opentelemetry

---
 .../open-telemetry/sdk/Metrics/MeterProvider.php   | 130 +++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 vendor/open-telemetry/sdk/Metrics/MeterProvider.php

(limited to 'vendor/open-telemetry/sdk/Metrics/MeterProvider.php')

diff --git a/vendor/open-telemetry/sdk/Metrics/MeterProvider.php b/vendor/open-telemetry/sdk/Metrics/MeterProvider.php
new file mode 100644
index 000000000..36c17cf81
--- /dev/null
+++ b/vendor/open-telemetry/sdk/Metrics/MeterProvider.php
@@ -0,0 +1,130 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\SDK\Metrics;
+
+use OpenTelemetry\API\Metrics\MeterInterface;
+use OpenTelemetry\API\Metrics\Noop\NoopMeter;
+use OpenTelemetry\Context\ContextStorageInterface;
+use OpenTelemetry\SDK\Common\Attribute\AttributesFactoryInterface;
+use OpenTelemetry\SDK\Common\Instrumentation\InstrumentationScopeFactoryInterface;
+use OpenTelemetry\SDK\Common\Time\ClockInterface;
+use OpenTelemetry\SDK\Metrics\Exemplar\ExemplarFilterInterface;
+use OpenTelemetry\SDK\Metrics\MetricFactory\StreamFactory;
+use OpenTelemetry\SDK\Metrics\MetricRegistry\MetricRegistry;
+use OpenTelemetry\SDK\Metrics\MetricRegistry\MetricRegistryInterface;
+use OpenTelemetry\SDK\Metrics\MetricRegistry\MetricWriterInterface;
+use OpenTelemetry\SDK\Resource\ResourceInfo;
+use OpenTelemetry\SDK\Sdk;
+
+final class MeterProvider implements MeterProviderInterface
+{
+    private MetricFactoryInterface $metricFactory;
+    private ResourceInfo $resource;
+    private ClockInterface $clock;
+    private InstrumentationScopeFactoryInterface $instrumentationScopeFactory;
+    private iterable $metricReaders;
+    private ViewRegistryInterface $viewRegistry;
+    private ?ExemplarFilterInterface $exemplarFilter;
+    private StalenessHandlerFactoryInterface $stalenessHandlerFactory;
+    private MeterInstruments $instruments;
+    private MetricRegistryInterface $registry;
+    private MetricWriterInterface $writer;
+
+    private bool $closed = false;
+
+    /**
+     * @param iterable<MetricReaderInterface&MetricSourceRegistryInterface&DefaultAggregationProviderInterface> $metricReaders
+     */
+    public function __construct(
+        ?ContextStorageInterface $contextStorage,
+        ResourceInfo $resource,
+        ClockInterface $clock,
+        AttributesFactoryInterface $attributesFactory,
+        InstrumentationScopeFactoryInterface $instrumentationScopeFactory,
+        iterable $metricReaders,
+        ViewRegistryInterface $viewRegistry,
+        ?ExemplarFilterInterface $exemplarFilter,
+        StalenessHandlerFactoryInterface $stalenessHandlerFactory,
+        MetricFactoryInterface $metricFactory = null
+    ) {
+        $this->metricFactory = $metricFactory ?? new StreamFactory();
+        $this->resource = $resource;
+        $this->clock = $clock;
+        $this->instrumentationScopeFactory = $instrumentationScopeFactory;
+        $this->metricReaders = $metricReaders;
+        $this->viewRegistry = $viewRegistry;
+        $this->exemplarFilter = $exemplarFilter;
+        $this->stalenessHandlerFactory = $stalenessHandlerFactory;
+        $this->instruments = new MeterInstruments();
+
+        $registry = new MetricRegistry($contextStorage, $attributesFactory, $clock);
+        $this->registry = $registry;
+        $this->writer = $registry;
+    }
+
+    public function getMeter(
+        string $name,
+        ?string $version = null,
+        ?string $schemaUrl = null,
+        iterable $attributes = []
+    ): MeterInterface {
+        if ($this->closed || Sdk::isDisabled()) { //@todo create meter provider from factory, and move Sdk::isDisabled() there
+            return new NoopMeter();
+        }
+
+        return new Meter(
+            $this->metricFactory,
+            $this->resource,
+            $this->clock,
+            $this->stalenessHandlerFactory,
+            $this->metricReaders,
+            $this->viewRegistry,
+            $this->exemplarFilter,
+            $this->instruments,
+            $this->instrumentationScopeFactory->create($name, $version, $schemaUrl, $attributes),
+            $this->registry,
+            $this->writer,
+        );
+    }
+
+    public function shutdown(): bool
+    {
+        if ($this->closed) {
+            return false;
+        }
+
+        $this->closed = true;
+
+        $success = true;
+        foreach ($this->metricReaders as $metricReader) {
+            if (!$metricReader->shutdown()) {
+                $success = false;
+            }
+        }
+
+        return $success;
+    }
+
+    public function forceFlush(): bool
+    {
+        if ($this->closed) {
+            return false;
+        }
+
+        $success = true;
+        foreach ($this->metricReaders as $metricReader) {
+            if (!$metricReader->forceFlush()) {
+                $success = false;
+            }
+        }
+
+        return $success;
+    }
+
+    public static function builder(): MeterProviderBuilder
+    {
+        return new MeterProviderBuilder();
+    }
+}
-- 
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