print git hash (#40)

Signed-off-by: Connor1996 <zbk602423539@gmail.com>

CMakeLists.txt

@@ -14,12 +14,13 @@ include_directories(${ROCKSDB_DIR})
 include_directories(${ROCKSDB_DIR}/include)
 include_directories(${PROJECT_SOURCE_DIR}/include)
 include_directories(${PROJECT_SOURCE_DIR}/src)
+include_directories(${PROJECT_SOURCE_DIR}/util)
 
 file(GLOB SOURCES src/*.cc)
 file(GLOB TEST_SOURCES src/*test.cc)
 list(REMOVE_ITEM SOURCES ${TEST_SOURCES})
 
-add_library(titan STATIC ${SOURCES})
+add_library(titan STATIC ${SOURCES} $<TARGET_OBJECTS:titan_build_version>)
 
 option(WITH_TITAN_TESTS "Build with tests." ON)
 option(WITH_TITAN_TOOLS "Build with tools." ON)
@@ -30,6 +31,24 @@ if (CMAKE_BUILD_TYPE STREQUAL "Release")
   set(WITH_TITAN_TESTS OFF)
 endif()
 
+find_package(Git)
+if(GIT_FOUND AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/.git")
+  if(WIN32)
+    execute_process(COMMAND $ENV{COMSPEC} /C ${GIT_EXECUTABLE} rev-parse HEAD OUTPUT_VARIABLE GIT_SHA)
+  else()
+    execute_process(COMMAND ${GIT_EXECUTABLE} rev-parse HEAD OUTPUT_VARIABLE GIT_SHA)
+  endif()
+else()
+  set(GIT_SHA 0)
+endif()
+string(REGEX REPLACE "[^0-9a-f]+" "" GIT_SHA "${GIT_SHA}")
+
+set(TITAN_BUILD_VERSION_CC ${CMAKE_BINARY_DIR}/titan_build_version.cc)
+configure_file(util/titan_build_version.cc.in ${TITAN_BUILD_VERSION_CC} @ONLY)
+add_library(titan_build_version OBJECT ${TITAN_BUILD_VERSION_CC})
+target_include_directories(titan_build_version PRIVATE
+  ${CMAKE_CURRENT_SOURCE_DIR}/util)
+
 if (CODE_COVERAGE)
   target_compile_options(titan PRIVATE "--coverage")
   set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --coverage")

src/db_impl.cc

@@ -15,6 +15,7 @@
 #include "blob_gc.h"
 #include "db_iter.h"
 #include "table_factory.h"
+#include "titan_build_version.h"
 
 namespace rocksdb {
 namespace titandb {
@@ -244,6 +245,8 @@ Status TitanDBImpl::Open(const std::vector<TitanCFDescriptor>& descs,
       stats_->Initialize(column_families, db_->DefaultColumnFamily()->GetID());
     }
     ROCKS_LOG_INFO(db_options_.info_log, "Titan DB open.");
+    ROCKS_LOG_HEADER(db_options_.info_log, "Titan git sha: %s",
+                     titan_build_git_sha);
     db_options_.Dump(db_options_.info_log.get());
     for (auto& desc : descs) {
       ROCKS_LOG_HEADER(db_options_.info_log,

util/titan_build_version.cc.in

+#include "titan_build_version.h"
+const char* titan_build_git_sha = "titan_build_git_sha:@@GIT_SHA@@";

util/titan_build_version.h

+#pragma once
+extern const char* titan_build_git_sha;
\ No newline at end of file