From 73d1de4366878a9f7ee744d8addb7e7b2d198f78 Mon Sep 17 00:00:00 2001
From: Liangliang Gu <marsishandsome@gmail.com>
Date: Wed, 28 Aug 2019 19:37:11 +0800
Subject: [PATCH] [FLASH-455] Remove level db dependency (#206)

---
 .gitmodules                                   |  3 --
 contrib/CMakeLists.txt                        |  1 -
 contrib/leveldb                               |  1 -
 dbms/CMakeLists.txt                           |  1 -
 .../Storages/Transaction/tests/CMakeLists.txt |  3 --
 .../Transaction/tests/leveldb_test.cpp        | 32 -------------------
 6 files changed, 41 deletions(-)
 delete mode 160000 contrib/leveldb
 delete mode 100644 dbms/src/Storages/Transaction/tests/leveldb_test.cpp

diff --git a/.gitmodules b/.gitmodules
index 1276ff94bf1..7a038a93e66 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -44,9 +44,6 @@
 [submodule "contrib/client-c"]
 	path = contrib/client-c
 	url = git@github.com:tikv/client-c.git
-[submodule "contrib/leveldb"]
-	path = contrib/leveldb
-	url = https://github.com/google/leveldb.git
 [submodule "contrib/junction"]
 	path = contrib/junction
 	url = https://github.com/preshing/junction.git
diff --git a/contrib/CMakeLists.txt b/contrib/CMakeLists.txt
index bc87acffc43..13c2f861b5b 100644
--- a/contrib/CMakeLists.txt
+++ b/contrib/CMakeLists.txt
@@ -1,5 +1,4 @@
 add_subdirectory (kvproto/cpp)
-add_subdirectory (leveldb)
 add_subdirectory (client-c)
 add_subdirectory (tipb/cpp)
 
diff --git a/contrib/leveldb b/contrib/leveldb
deleted file mode 160000
index 808e59ec6a1..00000000000
--- a/contrib/leveldb
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 808e59ec6a160244960cda64b393968ffbdae72c
diff --git a/dbms/CMakeLists.txt b/dbms/CMakeLists.txt
index fe2d618596b..c0b89c3db59 100644
--- a/dbms/CMakeLists.txt
+++ b/dbms/CMakeLists.txt
@@ -155,7 +155,6 @@ target_link_libraries (dbms
     clickhouse_common_io
     flash_service
     kvproto
-    leveldb
     kv_client
     tipb
     ${Protobuf_LIBRARIES}
diff --git a/dbms/src/Storages/Transaction/tests/CMakeLists.txt b/dbms/src/Storages/Transaction/tests/CMakeLists.txt
index 22e5ce98326..fc5b7cb6d71 100644
--- a/dbms/src/Storages/Transaction/tests/CMakeLists.txt
+++ b/dbms/src/Storages/Transaction/tests/CMakeLists.txt
@@ -12,9 +12,6 @@ target_link_libraries (kvstore dbms)
 add_executable (region_test region.cpp)
 target_link_libraries (region_test dbms)
 
-add_executable (leveldb_test leveldb_test.cpp)
-target_link_libraries (leveldb_test dbms)
-
 add_executable(type_mapping gtest_type_mapping.cpp)
 target_link_libraries(type_mapping dbms gtest_main)
 
diff --git a/dbms/src/Storages/Transaction/tests/leveldb_test.cpp b/dbms/src/Storages/Transaction/tests/leveldb_test.cpp
deleted file mode 100644
index d0be224832a..00000000000
--- a/dbms/src/Storages/Transaction/tests/leveldb_test.cpp
+++ /dev/null
@@ -1,32 +0,0 @@
-#include <Poco/File.h>
-#include <leveldb/db.h>
-#include <cassert>
-#include <ext/scope_guard.h>
-#include <iostream>
-
-int main()
-{
-    std::string path = "/tmp/testdb";
-    SCOPE_EXIT({ Poco::File(path).remove(true); });
-
-    leveldb::DB * db;
-    leveldb::Options options;
-    options.create_if_missing = true;
-    leveldb::Status status = leveldb::DB::Open(options, path, &db);
-    assert(status.ok());
-    std::cerr << status.ToString() << std::endl;
-
-    std::string value;
-    leveldb::Status s = db->Put(leveldb::WriteOptions(), "key1", "value");
-    if (s.ok())
-        s = db->Get(leveldb::ReadOptions(), "key1", &value);
-    if (s.ok())
-        s = db->Put(leveldb::WriteOptions(), "key2", value);
-    if (s.ok())
-        s = db->Delete(leveldb::WriteOptions(), "key1");
-
-	std::cerr << status.ToString() << std::endl;
-
-	delete db;
-	return 0;
-}
\ No newline at end of file