[Tarantool-patches] [PATCH v2 16/16] raft: move algorithm code to src/lib/raft

[Vladislav Shpilevoy <v.shpilevoy@tarantool.org>]

Raft algorithm code does not depend on box anymore, and is moved
to src/lib/raft.

This is done to be able to unit test Raft similarly to Swim - with
virtual event loop, network, time, and disk. Using any number of
instances. That will allow to cover all crazy and rare cases
possible in Raft, but without problems of functional tests
stability and clumsiness.

Part of #5303
---
 src/box/CMakeLists.txt                 | 3 +--
 src/box/raft.h                         | 2 +-
 src/lib/CMakeLists.txt                 | 1 +
 src/lib/raft/CMakeLists.txt            | 7 +++++++
 src/{box/raftlib.c => lib/raft/raft.c} | 0
 src/{box/raftlib.h => lib/raft/raft.h} | 0
 6 files changed, 10 insertions(+), 3 deletions(-)
 create mode 100644 src/lib/raft/CMakeLists.txt
 rename src/{box/raftlib.c => lib/raft/raft.c} (100%)
 rename src/{box/raftlib.h => lib/raft/raft.h} (100%)

diff --git a/src/box/CMakeLists.txt b/src/box/CMakeLists.txt
index fcf779379..a7547c29f 100644
--- a/src/box/CMakeLists.txt
+++ b/src/box/CMakeLists.txt
@@ -169,7 +169,6 @@ add_library(box STATIC
     port.c
     txn.c
     txn_limbo.c
-    raftlib.c
     raft.c
     box.cc
     gc.c
@@ -263,6 +262,6 @@ add_custom_command(OUTPUT ${SQL_BIN_DIR}/opcodes.c
         ${SQL_BIN_DIR}/opcodes.h)
 
 target_link_libraries(box box_error tuple stat xrow xlog vclock crc32 scramble
-                      ${common_libraries})
+                      raft ${common_libraries})
 
 add_dependencies(box build_bundled_libs generate_sql_files)
diff --git a/src/box/raft.h b/src/box/raft.h
index c80faf811..1c59f17e6 100644
--- a/src/box/raft.h
+++ b/src/box/raft.h
@@ -29,7 +29,7 @@
  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
-#include "raftlib.h"
+#include "raft/raft.h"
 
 #if defined(__cplusplus)
 extern "C" {
diff --git a/src/lib/CMakeLists.txt b/src/lib/CMakeLists.txt
index de1b902c6..cabbe3d89 100644
--- a/src/lib/CMakeLists.txt
+++ b/src/lib/CMakeLists.txt
@@ -14,6 +14,7 @@ add_subdirectory(crypto)
 add_subdirectory(swim)
 add_subdirectory(mpstream)
 add_subdirectory(vclock)
+add_subdirectory(raft)
 if(ENABLE_BUNDLED_MSGPUCK)
     add_subdirectory(msgpuck EXCLUDE_FROM_ALL)
 endif()
diff --git a/src/lib/raft/CMakeLists.txt b/src/lib/raft/CMakeLists.txt
new file mode 100644
index 000000000..aef2bacf7
--- /dev/null
+++ b/src/lib/raft/CMakeLists.txt
@@ -0,0 +1,7 @@
+set(lib_sources
+    raft.c
+)
+
+set_source_files_compile_flags(${lib_sources})
+add_library(raft STATIC ${lib_sources})
+target_link_libraries(raft core)
diff --git a/src/box/raftlib.c b/src/lib/raft/raft.c
similarity index 100%
rename from src/box/raftlib.c
rename to src/lib/raft/raft.c
diff --git a/src/box/raftlib.h b/src/lib/raft/raft.h
similarity index 100%
rename from src/box/raftlib.h
rename to src/lib/raft/raft.h
-- 
2.24.3 (Apple Git-128)