From 2818245e01ddb2dbb9187c90c75712e23e81a498 Mon Sep 17 00:00:00 2001
From: "Alexander A. Klimov" <alexander.klimov@icinga.com>
Date: Thu, 29 Jul 2021 12:10:42 +0200
Subject: [PATCH] Introduce Checkable#GetLastComment()

---
 lib/icinga/checkable-comment.cpp | 15 +++++++++++++++
 lib/icinga/checkable.hpp         |  1 +
 2 files changed, 16 insertions(+)

diff --git a/lib/icinga/checkable-comment.cpp b/lib/icinga/checkable-comment.cpp
index ea4f8b595..bb26a6d3c 100644
--- a/lib/icinga/checkable-comment.cpp
+++ b/lib/icinga/checkable-comment.cpp
@@ -7,6 +7,7 @@
 #include "base/timer.hpp"
 #include "base/utility.hpp"
 #include "base/logger.hpp"
+#include <utility>
 
 using namespace icinga;
 
@@ -42,6 +43,20 @@ std::set<Comment::Ptr> Checkable::GetComments() const
 	return m_Comments;
 }
 
+Comment::Ptr Checkable::GetLastComment() const
+{
+	std::unique_lock<std::mutex> lock (m_CommentMutex);
+	Comment::Ptr lastComment;
+
+	for (auto& comment : m_Comments) {
+		if (!lastComment || comment->GetEntryTime() > lastComment->GetEntryTime()) {
+			lastComment = comment;
+		}
+	}
+
+	return std::move(lastComment);
+}
+
 void Checkable::RegisterComment(const Comment::Ptr& comment)
 {
 	std::unique_lock<std::mutex> lock(m_CommentMutex);
diff --git a/lib/icinga/checkable.hpp b/lib/icinga/checkable.hpp
index 52229288e..46916ddf0 100644
--- a/lib/icinga/checkable.hpp
+++ b/lib/icinga/checkable.hpp
@@ -152,6 +152,7 @@ public:
 	void RemoveCommentsByType(int type, const String& removedBy = String());
 
 	std::set<Comment::Ptr> GetComments() const;
+	Comment::Ptr GetLastComment() const;
 	void RegisterComment(const Comment::Ptr& comment);
 	void UnregisterComment(const Comment::Ptr& comment);