file share support (#328)

this change adds a serve command to the zen CLI. This can be used to establish links to a set of files which may be served to clients via the project store interface:

```cmd> zen serve Lyra/WindowsClient d:\temp_share\StagedBuilds\WindowsClient```

with the appropriate changes in UE you may then start an instance of the runtime and have it load all files via the remote file connection:

```
Lyra\Binaries\LyraClient.exe ../../../Lyra/Lyra.uproject -pak -basedir=D:\temp_share\StagedBuilds\WindowsClient/Lyra/Binaries/Win64 -Mount=Lyra/WindowsClient
```

1 files changed, 16 insertions, 17 deletions

diff --git a/src/zenserver/projectstore/projectstore.cpp b/src/zenserver/projectstore/projectstore.cpp
index 6ca43af0e..184376c39 100644
--- a/src/zenserver/projectstore/projectstore.cpp
+++ b/src/zenserver/projectstore/projectstore.cpp
@@ -574,8 +574,7 @@ ProjectStore::Oplog::ReplayLog()
 	{
 		return;
 	}
-	m_Storage->ReplayLog(
-		[&](CbObject Op, const OplogEntry& OpEntry) { RegisterOplogEntry(OplogLock, GetMapping(Op), OpEntry, kUpdateReplay); });
+	m_Storage->ReplayLog([&](CbObject Op, const OplogEntry& OpEntry) { RegisterOplogEntry(OplogLock, GetMapping(Op), OpEntry); });
 }
 
 IoBuffer
@@ -774,21 +773,20 @@ ProjectStore::Oplog::AddFileMapping(const RwLock::ExclusiveLockScope&,
 									std::string_view ServerPath,
 									std::string_view ClientPath)
 {
+	FileMapEntry Entry;
+
 	if (Hash != IoHash::Zero)
 	{
 		m_ChunkMap.insert_or_assign(FileId, Hash);
 	}
+	else
+	{
+		Entry.ServerPath = ServerPath;
+	}
 
-	FileMapEntry Entry;
-	Entry.ServerPath = ServerPath;
 	Entry.ClientPath = ClientPath;
 
 	m_FileMap[FileId] = std::move(Entry);
-
-	if (Hash != IoHash::Zero)
-	{
-		m_ChunkMap.insert_or_assign(FileId, Hash);
-	}
 }
 
 void
@@ -858,8 +856,7 @@ ProjectStore::Oplog::GetMapping(CbObject Core)
 
 		Oid	   Id	= FileObj["id"sv].AsObjectId();
 		IoHash Hash = FileObj["data"sv].AsBinaryAttachment();
-		Result.Files.emplace_back(
-			OplogEntryMapping::FileMapping{OplogEntryMapping::Mapping{Id, Hash}, std::string(ServerPath), std::string(ClientPath)});
+		Result.Files.emplace_back(OplogEntryMapping::FileMapping{Id, Hash, std::string(ServerPath), std::string(ClientPath)});
 		ZEN_DEBUG("file {} -> {}, ServerPath: {}, ClientPath: {}", Id, Hash, ServerPath, ClientPath);
 	}
 
@@ -881,13 +878,10 @@ ProjectStore::Oplog::GetMapping(CbObject Core)
 uint32_t
 ProjectStore::Oplog::RegisterOplogEntry(RwLock::ExclusiveLockScope& OplogLock,
 										const OplogEntryMapping&	OpMapping,
-										const OplogEntry&			OpEntry,
-										UpdateType					TypeOfUpdate)
+										const OplogEntry&			OpEntry)
 {
 	ZEN_TRACE_CPU("ProjectStore::Oplog::RegisterOplogEntry");
 
-	ZEN_UNUSED(TypeOfUpdate);
-
 	// For now we're assuming the update is all in-memory so we can hold an exclusive lock without causing
 	// too many problems. Longer term we'll probably want to ensure we can do concurrent updates however
 
@@ -986,7 +980,7 @@ ProjectStore::Oplog::AppendNewOplogEntry(CbObject Core)
 	const OplogEntry OpEntry = m_Storage->AppendOp(Buffer, OpCoreHash, KeyHash);
 
 	RwLock::ExclusiveLockScope OplogLock(m_OplogLock);
-	const uint32_t			   EntryId = RegisterOplogEntry(OplogLock, Mapping, OpEntry, kUpdateNewEntry);
+	const uint32_t			   EntryId = RegisterOplogEntry(OplogLock, Mapping, OpEntry);
 
 	return EntryId;
 }
@@ -1904,7 +1898,7 @@ ProjectStore::GetProjectFiles(const std::string_view ProjectId, const std::strin
 		Response.BeginObject();
 		Response << "id"sv << Id;
 		Response << "clientpath"sv << ClientPath;
-		if (!FilterClient)
+		if (!FilterClient && !ServerPath.empty())
 		{
 			Response << "serverpath"sv << ServerPath;
 		}
@@ -2519,6 +2513,11 @@ ProjectStore::Rpc(HttpServerRequest&	 HttpReq,
 
 									return true;
 								}
+								else if (Field.GetName() == "serverpath"sv)
+								{
+									// omit this field as it's not relevant if there is a hash
+									return true;
+								}
 
 								return false;
 							});