Add Dockerfile for prod container. Reorganize source tree to be docker-build friendly.

src/server/error.h

@@ -0,0 +1,51 @@
+// Copyright 2021, Roman Gershman.  All rights reserved.
+// See LICENSE for licensing terms.
+//
+
+#pragma once
+
+#include <atomic>
+#include <string>
+
+namespace dfly {
+
+std::string WrongNumArgsError(std::string_view cmd);
+
+extern const char kSyntaxErr[];
+extern const char kWrongTypeErr[];
+extern const char kKeyNotFoundErr[];
+extern const char kInvalidIntErr[];
+extern const char kUintErr[];
+extern const char kDbIndOutOfRangeErr[];
+extern const char kInvalidDbIndErr[];
+extern const char kScriptNotFound[];
+extern const char kAuthRejected[];
+
+#ifndef RETURN_ON_ERR
+
+#define RETURN_ON_ERR(x) \
+  do {                   \
+    auto ec = (x);       \
+    if (ec)              \
+      return ec;         \
+  } while (0)
+
+#endif  // RETURN_ON_ERR
+
+namespace rdb {
+
+enum errc {
+  wrong_signature = 1,
+  bad_version = 2,
+  module_not_supported = 3,
+  duplicate_key = 4,
+  rdb_file_corrupted = 5,
+  bad_checksum = 6,
+  bad_db_index = 7,
+  invalid_rdb_type = 8,
+  invalid_encoding = 9,
+};
+
+}  // namespace rdb
+
+}  // namespace dfly