Adding an info command to display a top-level summary of disk space etc (#602)

this also adds a central, shared folder for storing information which may be found by any instance on the host. The directory is currently located alongside the default install and state directory.

Initially this is used to store a collection of known `root_manifest` locations and a copy of the latest manifest version which allow us to find all known locations where zen state is present.

1 files changed, 44 insertions, 8 deletions

diff --git a/src/zenserver/zenserver.cpp b/src/zenserver/zenserver.cpp
index 336f715f4..f80f95f8e 100644
--- a/src/zenserver/zenserver.cpp
+++ b/src/zenserver/zenserver.cpp
@@ -305,7 +305,8 @@ ZenServer::Initialize(const ZenServerOptions& ServerOptions, ZenServerState::Zen
 										   m_ProjectStore,
 										   HttpAdminService::LogPaths{.AbsLogPath	= ServerOptions.AbsLogFile,
 																	  .HttpLogPath	= ServerOptions.DataDir / "logs" / "http.log",
-																	  .CacheLogPath = ServerOptions.DataDir / "logs" / "z$.log"});
+																	  .CacheLogPath = ServerOptions.DataDir / "logs" / "z$.log"},
+										   ServerOptions);
 	m_Http->RegisterService(*m_AdminService);
 
 	return EffectiveBasePort;
@@ -329,6 +330,8 @@ ZenServer::InitializeState(const ZenServerOptions& ServerOptions)
 
 	bool				  UpdateManifest = false;
 	std::filesystem::path ManifestPath	 = m_DataRoot / "root_manifest";
+	Oid					  StateId		 = Oid::Zero;
+	DateTime			  CreatedWhen{0};
 
 	if (!WipeState)
 	{
@@ -365,6 +368,8 @@ ZenServer::InitializeState(const ZenServerOptions& ServerOptions)
 				m_RootManifest = LoadCompactBinaryObject(Manifest);
 
 				const int32_t ManifestVersion = m_RootManifest["schema_version"].AsInt32(0);
+				StateId						  = m_RootManifest["state_id"].AsObjectId();
+				CreatedWhen					  = m_RootManifest["created"].AsDateTime();
 
 				if (ManifestVersion != ZEN_CFG_SCHEMA_VERSION)
 				{
@@ -391,6 +396,20 @@ ZenServer::InitializeState(const ZenServerOptions& ServerOptions)
 		}
 	}
 
+	if (StateId == Oid::Zero)
+	{
+		StateId		   = Oid::NewOid();
+		UpdateManifest = true;
+	}
+
+	const DateTime Now = DateTime::Now();
+
+	if (CreatedWhen.GetTicks() == 0)
+	{
+		CreatedWhen	   = Now;
+		UpdateManifest = true;
+	}
+
 	// Handle any state wipe
 
 	if (WipeState)
@@ -418,19 +437,36 @@ ZenServer::InitializeState(const ZenServerOptions& ServerOptions)
 		UpdateManifest = true;
 	}
 
-	if (UpdateManifest)
-	{
-		// Write new manifest
-
-		const DateTime Now = DateTime::Now();
+	// Write manifest
 
+	{
 		CbObjectWriter Cbo;
-		Cbo << "schema_version" << ZEN_CFG_SCHEMA_VERSION << "created" << Now << "updated" << Now << "state_id" << Oid::NewOid();
+		Cbo << "schema_version" << ZEN_CFG_SCHEMA_VERSION << "created" << CreatedWhen << "updated" << Now << "state_id" << StateId;
 
 		m_RootManifest = Cbo.Save();
 
-		WriteFile(ManifestPath, m_RootManifest.GetBuffer().AsIoBuffer());
+		if (UpdateManifest)
+		{
+			IoBuffer ManifestBuffer = m_RootManifest.GetBuffer().AsIoBuffer();
+
+			WriteFile(ManifestPath, ManifestBuffer);
+		}
+
+		if (!ServerOptions.IsTest)
+		{
+			try
+			{
+				EmitCentralManifest(ServerOptions.SystemRootDir, StateId, m_RootManifest, ManifestPath);
+			}
+			catch (const std::exception& Ex)
+			{
+				ZEN_WARN("Unable to emit central manifest: ", Ex.what());
+			}
+		}
 	}
+
+	// Write state marker
+
 	{
 		std::filesystem::path		  StateMarkerPath	 = m_DataRoot / "state_marker";
 		static const std::string_view StateMarkerContent = "deleting this file will cause " ZEN_APP_NAME " to exit"sv;