更新

2026-10-22 16:42:26 +08:00
parent 7982aab721
commit 14abf67d0d
17 changed files with 1179 additions and 54 deletions
@@ -0,0 +1,58 @@
+<?php
+
+declare(strict_types=1);
+
+namespace app\adminapi\service;
+
+use app\common\service\NihaixiaClinicalSkill;
+use app\common\service\TcmAncientBooksReference;
+use think\facade\Cache;
+
+/** Short-lived evidence only. The caller must re-authorize and aggregate before lookup. */
+final class AiContextCompactionCache
+{
+    public static function remember(string $scope, string $profile, string $source, callable $produce): array
+    {
+        $config = config('prescription_ai') ?: [];
+        $ttl = max(0, min(600, (int) ($config['context_compaction_cache_ttl'] ?? 300)));
+        $key = self::key($scope, $profile, $source, $config);
+        if ($scope !== '' && $ttl > 0) {
+            try {
+                $cached = Cache::get($key);
+                if (self::valid($cached, strlen($source))) {
+                    $cached['cache_hit'] = true;
+                    return $cached;
+                }
+            } catch (\Throwable $ignored) {
+                // An unavailable cache must not prevent a complete fresh analysis.
+            }
+        }
+        $result = $produce();
+        if ($scope !== '' && $ttl > 0 && self::valid($result, strlen($source))) {
+            try {
+                Cache::set($key, $result, $ttl);
+            } catch (\Throwable $ignored) {
+            }
+        }
+        return $result + ['cache_hit' => false];
+    }
+
+    private static function key(string $scope, string $profile, string $source, array $config): string
+    {
+        return 'ai-context-evidence:' . hash('sha256', serialize([
+            'evidence-extraction-v2', $scope, $profile, hash('sha256', $source),
+            $config['base_url'] ?? '', $config['models'][$profile] ?? [],
+            NihaixiaClinicalSkill::VERSION, TcmAncientBooksReference::COMMIT,
+        ]));
+    }
+
+    private static function valid($value, int $sourceBytes): bool
+    {
+        return is_array($value) && is_string($value['text'] ?? null)
+            && trim($value['text']) !== '' && strlen($value['text']) <= 240000
+            && ($value['source_bytes'] ?? null) === $sourceBytes
+            && is_int($value['chunk_count'] ?? null) && $value['chunk_count'] > 0
+            && is_int($value['reduction_rounds'] ?? null) && $value['reduction_rounds'] >= 0
+            && ($value['compacted'] ?? null) === true;
+    }
+}