kernel: Add fatalError method to notifications

FatalError replaces what previously was the AbortNode function in
shutdown.cpp.

This commit is part of the libbitcoinkernel project and further removes
the shutdown's and, more generally, the kernel library's dependency on
interface_ui with a kernel notification method. By removing interface_ui
from the kernel library, its dependency on boost is reduced to just
boost::multi_index. At the same time it also takes a step towards
de-globalising the interrupt infrastructure.

Co-authored-by: Russell Yanofsky <russ@yanofsky.org>
Co-authored-by: TheCharlatan <seb.kung@gmail.com>

2 files changed, 7 insertions, 2 deletions

diff --git a/src/index/base.cpp b/src/index/base.cpp
index 99c33d53ba..cf07cae286 100644
--- a/src/index/base.cpp
+++ b/src/index/base.cpp
@@ -8,6 +8,7 @@
 #include <interfaces/chain.h>
 #include <kernel/chain.h>
 #include <logging.h>
+#include <node/abort.h>
 #include <node/blockstorage.h>
 #include <node/context.h>
 #include <node/database_args.h>
@@ -30,9 +31,10 @@ constexpr auto SYNC_LOG_INTERVAL{30s};
 constexpr auto SYNC_LOCATOR_WRITE_INTERVAL{30s};
 
 template <typename... Args>
-static void FatalErrorf(const char* fmt, const Args&... args)
+void BaseIndex::FatalErrorf(const char* fmt, const Args&... args)
 {
-    AbortNode(tfm::format(fmt, args...));
+    auto message = tfm::format(fmt, args...);
+    node::AbortNode(m_chain->context()->exit_status, message);
 }
 
 CBlockLocator GetLocator(interfaces::Chain& chain, const uint256& block_hash)
diff --git a/src/index/base.h b/src/index/base.h
index 231f36b605..8affee90f8 100644
--- a/src/index/base.h
+++ b/src/index/base.h
@@ -94,6 +94,9 @@ private:
 
     virtual bool AllowPrune() const = 0;
 
+    template <typename... Args>
+    void FatalErrorf(const char* fmt, const Args&... args);
+
 protected:
     std::unique_ptr<interfaces::Chain> m_chain;
     Chainstate* m_chainstate{nullptr};