From 5e12cf0c02b2e6687a246f7a5ae5fe2b6c62f079 Mon Sep 17 00:00:00 2001
From: Stefan Boberg <stefan@boberg.org>
Date: Mon, 9 Aug 2021 16:31:55 +0200
Subject: Added ZenServerInstance::AttachToRunningServer

---
 zenutil/zenserverprocess.cpp | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

(limited to 'zenutil/zenserverprocess.cpp')

diff --git a/zenutil/zenserverprocess.cpp b/zenutil/zenserverprocess.cpp
index 8427e612e..2a6b583de 100644
--- a/zenutil/zenserverprocess.cpp
+++ b/zenutil/zenserverprocess.cpp
@@ -490,6 +490,36 @@ ZenServerInstance::SpawnServer(int BasePort)
 	m_ReadyEvent = std::move(ChildEvent);
 }
 
+void
+ZenServerInstance::AttachToRunningServer(int BasePort)
+{
+	ZenServerState State;
+	if (!State.InitializeReadOnly())
+	{
+		// TODO: return success/error code instead?
+		throw std::exception("No zen state found");
+	}
+
+	const ZenServerState::ZenServerEntry* Entry = nullptr;
+
+	if (BasePort)
+	{
+		Entry = State.Lookup(BasePort);
+	}
+	else
+	{
+		State.Snapshot([&](const ZenServerState::ZenServerEntry& InEntry) { Entry = &InEntry; });
+	}
+
+	if (!Entry)
+	{
+		// TODO: return success/error code instead?
+		throw std::exception("No server found");
+	}
+
+	m_Process.Initialize(Entry->Pid);
+}
+
 void
 ZenServerInstance::WaitUntilReady()
 {
-- 
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