jaeger-client -> opentelemetry

1 files changed, 40 insertions, 0 deletions

diff --git a/vendor/open-telemetry/sdk/Metrics/View/CriteriaViewRegistry.php b/vendor/open-telemetry/sdk/Metrics/View/CriteriaViewRegistry.php
new file mode 100644
index 000000000..f387abf9c
--- /dev/null
+++ b/vendor/open-telemetry/sdk/Metrics/View/CriteriaViewRegistry.php
@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\SDK\Metrics\View;
+
+use Generator;
+use OpenTelemetry\SDK\Common\Instrumentation\InstrumentationScopeInterface;
+use OpenTelemetry\SDK\Metrics\Instrument;
+use OpenTelemetry\SDK\Metrics\ViewRegistryInterface;
+
+final class CriteriaViewRegistry implements ViewRegistryInterface
+{
+    /** @var list<SelectionCriteriaInterface> */
+    private array $criteria = [];
+    /** @var list<ViewTemplate> */
+    private array $views = [];
+
+    public function register(SelectionCriteriaInterface $criteria, ViewTemplate $view): void
+    {
+        $this->criteria[] = $criteria;
+        $this->views[] = $view;
+    }
+
+    public function find(Instrument $instrument, InstrumentationScopeInterface $instrumentationScope): ?iterable
+    {
+        $views = $this->generateViews($instrument, $instrumentationScope);
+
+        return $views->valid() ? $views : null;
+    }
+
+    private function generateViews(Instrument $instrument, InstrumentationScopeInterface $instrumentationScope): Generator
+    {
+        foreach ($this->criteria as $i => $criteria) {
+            if ($criteria->accepts($instrument, $instrumentationScope)) {
+                yield $this->views[$i]->project($instrument);
+            }
+        }
+    }
+}