Ingest live 3proxy traffic from access logs

server/lib/snapshot.ts

@@ -0,0 +1,64 @@
+import type { ProxyUserRecord } from '../../src/shared/contracts';
+import { deriveDashboardSnapshot, render3proxyConfig, type ObservedRuntimeState, type RuntimePaths, type RuntimeSnapshot } from './config';
+import type { StateStore } from './store';
+import { readObservedTraffic } from './traffic';
+
+export async function getDashboardSnapshot(
+  store: StateStore,
+  runtime: { getSnapshot(): RuntimeSnapshot },
+  runtimePaths: RuntimePaths,
+) {
+  const state = await store.read();
+  const previewConfig = render3proxyConfig(state, runtimePaths);
+  const traffic = await readObservedTraffic(runtimePaths, state.userRecords);
+  const observedUsers = deriveObservedUsers(state.userRecords, traffic.userBytesByName, traffic.recentUsers);
+  const observed: ObservedRuntimeState = {
+    totalBytes: traffic.totalBytes,
+    liveConnections: traffic.liveConnections,
+    activeUsers: traffic.activeUsers,
+    daily: traffic.daily,
+    userRecords: observedUsers,
+  };
+
+  return deriveDashboardSnapshot(state, runtime.getSnapshot(), observed, previewConfig);
+}
+
+function deriveObservedUsers(
+  users: ProxyUserRecord[],
+  userBytesByName: Map<string, number>,
+  recentUsers: Set<string>,
+): ProxyUserRecord[] {
+  return users.map((user) => {
+    const usedBytes = userBytesByName.get(user.username) ?? 0;
+
+    if (user.paused) {
+      return {
+        ...user,
+        usedBytes,
+        status: 'idle',
+      };
+    }
+
+    if (user.quotaBytes !== null && usedBytes >= user.quotaBytes) {
+      return {
+        ...user,
+        usedBytes,
+        status: 'fail',
+      };
+    }
+
+    if (user.quotaBytes !== null && user.quotaBytes > 0 && usedBytes / user.quotaBytes >= 0.8) {
+      return {
+        ...user,
+        usedBytes,
+        status: recentUsers.has(user.username) ? 'live' : 'warn',
+      };
+    }
+
+    return {
+      ...user,
+      usedBytes,
+      status: recentUsers.has(user.username) ? 'live' : 'idle',
+    };
+  });
+}