1 files changed, 2 insertions, 1 deletions
diff --git a/zenserver/upstream/upstreamapply.h b/zenserver/upstream/upstreamapply.h
index c6e38142c..1deaf00a5 100644
--- a/zenserver/upstream/upstreamapply.h
+++ b/zenserver/upstream/upstreamapply.h
@@ -23,7 +23,7 @@ class CbObjectWriter;
 class CidStore;
 class CloudCacheTokenProvider;
 class WorkerThreadPool;
-class ZenCacheStore;
+class ZenCacheNamespace;
 struct CloudCacheClientOptions;
 struct UpstreamAuthConfig;
 
@@ -167,6 +167,7 @@ public:
 	virtual ~UpstreamApply() = default;
 
 	virtual bool Initialize()													   = 0;
+	virtual bool IsHealthy() const												   = 0;
 	virtual void RegisterEndpoint(std::unique_ptr<UpstreamApplyEndpoint> Endpoint) = 0;
 
 	struct EnqueueResult