Root cause found via 4 rounds of CI diagnostics: HEZ (native asset) on
Pezkuwi Asset Hub was correctly present+enabled in the Chain domain model,
correctly dispatched to NativeAssetBalance, and its System.Account storage
key was correctly computed - but the raw subscriptionBuilder.subscribe(key)
call never actually reached the RPC connection, with zero exceptions and
zero data, while the chain's 5 other assets (all statemine-type, all using
the same SharedRequestsBuilder) synced fine. The same NativeAssetBalance
code worked correctly for every OTHER native asset on every OTHER chain
tested, ruling out a generic bug in the class.
Switched startSyncingBalance() to the typed remoteStorage.subscribe { }
DSL (metadata.system.account.observeWithRaw) - the same mechanism this
class's own subscribeAccountBalanceUpdatePoint() and PooledBalanceUpdater/
BalanceLocksUpdater already use successfully on the same busy chain
connection, instead of the raw subscriptionBuilder.subscribe(key) call
that appears to silently drop registration in that specific configuration.
Also removes the diagnostic logging added during the investigation
(BalancesUpdateSystem's per-chain balancesSync trace, FullSyncPaymentUpdater's
per-chain asset dump) - kept the one genuinely valuable permanent addition,
the "listenForUpdates() threw synchronously" error log for a previously
silent failure mode.
First run of this test produced zero BalancesDiag output at all - not even a
single balancesSync() call for any chain. Root cause: BalancesUpdateSystem.start()
is a cold flow only ever collected by RootInteractor, which is wired to the root
Activity/ViewModel lifecycle. This bare instrumented test never launches that
Activity, so the pipeline was never started - the test's own timeout, not the
production bug, explained the failure. Now collect the same AssetsFeatureApi.
updateSystem instance directly instead of relying on app UI lifecycle.
BalancesUpdateSystem.launchChainUpdaters() wrapped updater.listenForUpdates() in a
try/catch that discarded synchronous exceptions with zero logging - a silent failure
point that could explain a chain's balances never syncing with no trace in logcat.
Also add a full-architecture instrumented test that persists a real watch-only
MetaAccount and polls AssetDao through the actual BalancesUpdateSystem pipeline,
instead of bypassing it like the existing BalancesIntegrationTest does.
pezkuwichain