add `flush` command and more gc status info (#483)

- Feature: New endpoint `/admin/flush ` to flush all storage - CAS, Cache and ProjectStore
- Feature: New command `zen flush` to flush all storage - CAS, Cache and ProjectStore
- Improved: Command `zen gc-status` now gives details about storage, when last GC occured, how long until next GC etc
- Changed: Cache access and write log are disabled by default

2 files changed, 8 insertions, 5 deletions

diff --git a/src/zenserver/cache/structuredcachestore.cpp b/src/zenserver/cache/structuredcachestore.cpp
index 48463fcd8..05b4c2e58 100644
--- a/src/zenserver/cache/structuredcachestore.cpp
+++ b/src/zenserver/cache/structuredcachestore.cpp
@@ -278,8 +278,7 @@ ZenCacheStore::ZenCacheStore(GcManager&				 Gc,
 							 JobQueue&				 JobQueue,
 							 const Configuration&	 Configuration,
 							 const DiskWriteBlocker* InDiskWriteBlocker)
-: m_Log(logging::Get("z$"))
-, m_DiskWriteBlocker(InDiskWriteBlocker)
+: m_DiskWriteBlocker(InDiskWriteBlocker)
 , m_Gc(Gc)
 , m_JobQueue(JobQueue)
 , m_Configuration(Configuration)
@@ -288,7 +287,7 @@ ZenCacheStore::ZenCacheStore(GcManager&				 Gc,
 	SetLoggingConfig(m_Configuration.Logging);
 	CreateDirectories(m_Configuration.BasePath);
 
-	ZEN_INFO("Initializing at '{}'", m_Configuration.BasePath);
+	ZEN_INFO("initializing cache store at '{}'", m_Configuration.BasePath);
 
 	DirectoryContent DirContent;
 	GetDirectoryContent(m_Configuration.BasePath, DirectoryContent::IncludeDirsFlag, DirContent);
@@ -329,6 +328,7 @@ ZenCacheStore::ZenCacheStore(GcManager&				 Gc,
 
 ZenCacheStore::~ZenCacheStore()
 {
+	ZEN_INFO("closing cache store at '{}'", m_Configuration.BasePath);
 	SetLoggingConfig({.EnableWriteLog = false, .EnableAccessLog = false});
 	m_Namespaces.clear();
 }
@@ -338,6 +338,10 @@ ZenCacheStore::LogWorker()
 {
 	SetCurrentThreadName("ZenCacheStore::LogWorker");
 
+	spdlog::logger& ZCacheLog(logging::Get("z$"));
+
+	auto Log = [&ZCacheLog]() { return ZCacheLog; };
+
 	std::vector<AccessLogItem> Items;
 	while (true)
 	{
@@ -556,6 +560,7 @@ ZenCacheStore::DropNamespace(std::string_view InNamespace)
 void
 ZenCacheStore::Flush()
 {
+	ZEN_INFO("flushing cache store at '{}'", m_Configuration.BasePath);
 	IterateNamespaces([&](std::string_view, ZenCacheNamespace& Store) { Store.Flush(); });
 }
 
diff --git a/src/zenserver/cache/structuredcachestore.h b/src/zenserver/cache/structuredcachestore.h
index 672858fa0..c67b23e93 100644
--- a/src/zenserver/cache/structuredcachestore.h
+++ b/src/zenserver/cache/structuredcachestore.h
@@ -225,8 +225,6 @@ private:
 
 	typedef std::unordered_map<std::string, std::unique_ptr<ZenCacheNamespace>> NamespaceMap;
 
-	spdlog::logger&									m_Log;
-	spdlog::logger&									Log() { return m_Log; }
 	const DiskWriteBlocker*							m_DiskWriteBlocker = nullptr;
 	mutable RwLock									m_NamespacesLock;
 	NamespaceMap									m_Namespaces;