6 files changed, 120 insertions, 0 deletions
diff --git a/vendor/open-telemetry/api/Behavior/Internal/LogWriter/ErrorLogWriter.php b/vendor/open-telemetry/api/Behavior/Internal/LogWriter/ErrorLogWriter.php
new file mode 100644
index 000000000..1b9f785aa
--- /dev/null
+++ b/vendor/open-telemetry/api/Behavior/Internal/LogWriter/ErrorLogWriter.php
@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\API\Behavior\Internal\LogWriter;
+
+class ErrorLogWriter implements LogWriterInterface
+{
+    public function write($level, string $message, array $context): void
+    {
+        error_log(Formatter::format($level, $message, $context));
+    }
+}
diff --git a/vendor/open-telemetry/api/Behavior/Internal/LogWriter/Formatter.php b/vendor/open-telemetry/api/Behavior/Internal/LogWriter/Formatter.php
new file mode 100644
index 000000000..4cfd6f9d4
--- /dev/null
+++ b/vendor/open-telemetry/api/Behavior/Internal/LogWriter/Formatter.php
@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\API\Behavior\Internal\LogWriter;
+
+class Formatter
+{
+    public static function format($level, string $message, array $context): string
+    {
+        $exception = (array_key_exists('exception', $context) && $context['exception'] instanceof \Throwable)
+            ? $context['exception']
+            : null;
+        if ($exception) {
+            $message = sprintf(
+                'OpenTelemetry: [%s] %s [exception] %s%s%s',
+                $level,
+                $message,
+                $exception->getMessage(),
+                PHP_EOL,
+                $exception->getTraceAsString()
+            );
+        } else {
+            //get calling location, skipping over trait, formatter etc
+            $caller = debug_backtrace()[3];
+            $message = sprintf(
+                'OpenTelemetry: [%s] %s in %s(%s)',
+                $level,
+                $message,
+                $caller['file'],
+                $caller['line'],
+            );
+        }
+
+        return $message;
+    }
+}
diff --git a/vendor/open-telemetry/api/Behavior/Internal/LogWriter/LogWriterInterface.php b/vendor/open-telemetry/api/Behavior/Internal/LogWriter/LogWriterInterface.php
new file mode 100644
index 000000000..046d21fc9
--- /dev/null
+++ b/vendor/open-telemetry/api/Behavior/Internal/LogWriter/LogWriterInterface.php
@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\API\Behavior\Internal\LogWriter;
+
+interface LogWriterInterface
+{
+    public function write($level, string $message, array $context): void;
+}
diff --git a/vendor/open-telemetry/api/Behavior/Internal/LogWriter/NoopLogWriter.php b/vendor/open-telemetry/api/Behavior/Internal/LogWriter/NoopLogWriter.php
new file mode 100644
index 000000000..f7529c082
--- /dev/null
+++ b/vendor/open-telemetry/api/Behavior/Internal/LogWriter/NoopLogWriter.php
@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\API\Behavior\Internal\LogWriter;
+
+class NoopLogWriter implements LogWriterInterface
+{
+    public function write($level, string $message, array $context): void
+    {
+        //do nothing
+    }
+}
diff --git a/vendor/open-telemetry/api/Behavior/Internal/LogWriter/Psr3LogWriter.php b/vendor/open-telemetry/api/Behavior/Internal/LogWriter/Psr3LogWriter.php
new file mode 100644
index 000000000..5b2d19c15
--- /dev/null
+++ b/vendor/open-telemetry/api/Behavior/Internal/LogWriter/Psr3LogWriter.php
@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\API\Behavior\Internal\LogWriter;
+
+use Psr\Log\LoggerInterface;
+
+class Psr3LogWriter implements LogWriterInterface
+{
+    private LoggerInterface $logger;
+
+    public function __construct(LoggerInterface $logger)
+    {
+        $this->logger = $logger;
+    }
+
+    public function write($level, string $message, array $context): void
+    {
+        $this->logger->log($level, $message, $context);
+    }
+}
diff --git a/vendor/open-telemetry/api/Behavior/Internal/LogWriter/StreamLogWriter.php b/vendor/open-telemetry/api/Behavior/Internal/LogWriter/StreamLogWriter.php
new file mode 100644
index 000000000..f65f1e856
--- /dev/null
+++ b/vendor/open-telemetry/api/Behavior/Internal/LogWriter/StreamLogWriter.php
@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\API\Behavior\Internal\LogWriter;
+
+class StreamLogWriter implements LogWriterInterface
+{
+    private $stream;
+
+    public function __construct(string $destination)
+    {
+        $stream = fopen($destination, 'a');
+        if ($stream) {
+            $this->stream = $stream;
+        } else {
+            throw new \RuntimeException(sprintf('Unable to open %s for writing', $destination));
+        }
+    }
+
+    public function write($level, string $message, array $context): void
+    {
+        fwrite($this->stream, Formatter::format($level, $message, $context));
+    }
+}