don't perform sync health job til we've synced for the first time

apps/hubble/src/hubble.ts

@@ -142,6 +142,7 @@ const ALLOWED_CLOCK_SKEW_SECONDS = 60 * 10; // 10 minutes
 export interface HubInterface {
   engine: Engine;
   identity: string;
+  performedFirstSync: boolean;
   hubOperatorFid?: number;
   submitMessage(message: Message, source?: HubSubmitSource): HubAsyncResult<number>;
   submitMessageBundle(
@@ -380,7 +381,6 @@ export class Hub implements HubInterface {
   private allowlistedImmunePeers: string[] | undefined;
   private strictContactInfoValidation: boolean;
   private strictNoSign: boolean;
-  private performedFirstSync = false;
 
   private pruneMessagesJobScheduler: PruneMessagesJobScheduler;
   private periodSyncJobScheduler: PeriodicSyncJobScheduler;
@@ -399,6 +399,7 @@ export class Hub implements HubInterface {
   engine: Engine;
   fNameRegistryEventsProvider: FNameRegistryEventsProvider;
   l2RegistryProvider: L2EventsProvider;
+  performedFirstSync = false;
 
   constructor(options: HubOptions) {
     this.options = options;

apps/hubble/src/network/sync/syncHealthJob.ts

@@ -176,6 +176,11 @@ export class MeasureSyncHealthJobScheduler {
   }
 
   async doJobs() {
+    if (!this._hub.performedFirstSync) {
+      log.info("Skipping SyncHealth job because we haven't performed our first sync yet");
+      return;
+    }
+
     log.info({}, "Starting compute SyncHealth job");
 
     const startTime = Date.now() - this._startSecondsAgo * 1000;

apps/hubble/src/test/mocks.ts

@@ -37,6 +37,7 @@ export class MockHub implements HubInterface {
   public engine: Engine;
   public gossipNode: GossipNode | undefined;
   public gossipCount = 0;
+  public performedFirstSync = false;
 
   constructor(db: RocksDB, engine?: Engine, gossipNode?: GossipNode) {
     this.db = db;