init

dist/session/registry.js

@@ -0,0 +1,56 @@
+import crypto from "node:crypto";
+export class SessionRegistry {
+    ttlMs;
+    bindings = new Map();
+    constructor(ttlSeconds) {
+        this.ttlMs = ttlSeconds * 1000;
+    }
+    upsert(context, sessionId) {
+        const binding = {
+            conversationId: context.conversationId,
+            sessionId,
+            lastUsedAt: Date.now(),
+        };
+        this.bindings.set(this.makeKey(context), binding);
+        return binding;
+    }
+    get(context) {
+        const key = this.makeKey(context);
+        const binding = this.bindings.get(key);
+        if (!binding) {
+            return null;
+        }
+        if (Date.now() - binding.lastUsedAt > this.ttlMs) {
+            this.bindings.delete(key);
+            return null;
+        }
+        binding.lastUsedAt = Date.now();
+        return binding;
+    }
+    count() {
+        this.evictExpired();
+        return this.bindings.size;
+    }
+    evictExpired() {
+        const expired = [];
+        const now = Date.now();
+        for (const [key, binding] of this.bindings.entries()) {
+            if (now - binding.lastUsedAt > this.ttlMs) {
+                expired.push(binding.sessionId);
+                this.bindings.delete(key);
+            }
+        }
+        return expired;
+    }
+    makeKey(context) {
+        const digest = crypto
+            .createHash("sha256")
+            .update([
+            context.conversationId,
+            context.accessToken ?? "",
+            context.projectId ?? "",
+        ].join("|"))
+            .digest("hex");
+        return digest;
+    }
+}