1 files changed, 68 insertions, 0 deletions
diff --git a/src/node/warnings.cpp b/src/node/warnings.cpp
new file mode 100644
index 0000000000..b99c845900
--- /dev/null
+++ b/src/node/warnings.cpp
@@ -0,0 +1,68 @@
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2009-2022 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <config/bitcoin-config.h> // IWYU pragma: keep
+
+#include <node/warnings.h>
+
+#include <common/system.h>
+#include <node/interface_ui.h>
+#include <sync.h>
+#include <univalue.h>
+#include <util/translation.h>
+
+#include <utility>
+#include <vector>
+
+namespace node {
+Warnings::Warnings()
+{
+    // Pre-release build warning
+    if (!CLIENT_VERSION_IS_RELEASE) {
+        m_warnings.insert(
+            {Warning::PRE_RELEASE_TEST_BUILD,
+             _("This is a pre-release test build - use at your own risk - do not use for mining or merchant applications")});
+    }
+}
+bool Warnings::Set(warning_type id, bilingual_str message)
+{
+    LOCK(m_mutex);
+    const auto& [_, inserted]{m_warnings.insert({id, std::move(message)})};
+    if (inserted) uiInterface.NotifyAlertChanged();
+    return inserted;
+}
+
+bool Warnings::Unset(warning_type id)
+{
+    auto success{WITH_LOCK(m_mutex, return m_warnings.erase(id))};
+    if (success) uiInterface.NotifyAlertChanged();
+    return success;
+}
+
+std::vector<bilingual_str> Warnings::GetMessages() const
+{
+    LOCK(m_mutex);
+    std::vector<bilingual_str> messages;
+    messages.reserve(m_warnings.size());
+    for (const auto& [id, msg] : m_warnings) {
+        messages.push_back(msg);
+    }
+    return messages;
+}
+
+UniValue GetWarningsForRpc(const Warnings& warnings, bool use_deprecated)
+{
+    if (use_deprecated) {
+        const auto all_messages{warnings.GetMessages()};
+        return all_messages.empty() ? "" : all_messages.back().original;
+    }
+
+    UniValue messages{UniValue::VARR};
+    for (auto&& message : warnings.GetMessages()) {
+        messages.push_back(std::move(message.original));
+    }
+    return messages;
+}
+} // namespace node