fix boolean config parse in json

Signed-off-by: xianliang.li <xianliang.li@zilliz.com>

Author: foxspy

src/common/config.cc

@@ -154,10 +154,10 @@ Config::FormatAndCheck(const Config& cfg, Json& json, std::string* const err_msg
                     }
                 }
                 if (std::get_if<Entry<CFG_BOOL>>(&var)) {
-                    if (json[it.first] == "true") {
+                    if (json[it.first] == "true" || json[it.first] == "True" || json[it.first] == "TRUE") {
                         json[it.first] = true;
                     }
-                    if (json[it.first] == "false") {
+                    if (json[it.first] == "false" || json[it.first] == "False" || json[it.first] == "FALSE") {
                         json[it.first] = false;
                     }
                 }

tests/ut/test_config.cc

@@ -540,6 +540,35 @@ TEST_CASE("Test config load", "[BOOL]") {
         s = knowhere::Config::Load(test_cfg, json, knowhere::TRAIN, &err_msg);
         CHECK(s == knowhere::Status::success);
         CHECK(test_cfg.bool_val.value() == true);
+
+        json = knowhere::Json::parse(R"({
+            "bool_val": "True"
+        })");
+        s = knowhere::Config::Load(test_cfg, json, knowhere::TRAIN, &err_msg);
+        CHECK(s == knowhere::Status::success);
+        CHECK(test_cfg.bool_val.value() == true);
+
+        json = knowhere::Json::parse(R"({
+            "bool_val": "TRUE"
+        })");
+        s = knowhere::Config::Load(test_cfg, json, knowhere::TRAIN, &err_msg);
+        CHECK(s == knowhere::Status::success);
+        CHECK(test_cfg.bool_val.value() == true);
+
+        json = knowhere::Json::parse(R"({
+            "bool_val": "False"
+        })");
+        s = knowhere::Config::Load(test_cfg, json, knowhere::TRAIN, &err_msg);
+        CHECK(s == knowhere::Status::success);
+        CHECK(test_cfg.bool_val.value() == false);
+
+        json = knowhere::Json::parse(R"({
+            "bool_val": "FALSE"
+        })");
+        s = knowhere::Config::Load(test_cfg, json, knowhere::TRAIN, &err_msg);
+        CHECK(s == knowhere::Status::success);
+        CHECK(test_cfg.bool_val.value() == false);
+
     }
 
     SECTION("check bool allow empty") {