fix:fix GetValueFromConfig for bool type (#39527)

pr: #39526

Signed-off-by: luzhang <luzhang@zilliz.com>
Co-authored-by: luzhang <luzhang@zilliz.com>

Author: zhagnlu

internal/core/src/index/Utils.h

@@ -82,13 +82,23 @@ void inline CheckParameter(Config& conf,
 template <typename T>
 inline std::optional<T>
 GetValueFromConfig(const Config& cfg, const std::string& key) {
-    // cfg value are all string type
     if (cfg.contains(key)) {
-        if constexpr (std::is_same_v<T, bool>) {
-            return boost::algorithm::to_lower_copy(
-                       cfg.at(key).get<std::string>()) == "true";
+        try {
+            // compatibility for boolean string
+            if constexpr (std::is_same_v<T, bool>) {
+                if (cfg.at(key).is_boolean()) {
+                    return cfg.at(key).get<bool>();
+                }
+                return boost::algorithm::to_lower_copy(
+                           cfg.at(key).get<std::string>()) == "true";
+            }
+            return cfg.at(key).get<T>();
+        } catch (std::exception& e) {
+            PanicInfo(ErrorCode::UnexpectedError,
+                      "get value from config for key {} failed, error: {}",
+                      key,
+                      e.what());
         }
-        return cfg.at(key).get<T>();
     }
     return std::nullopt;
 }

internal/core/unittest/test_c_api.cpp

@@ -5281,3 +5281,28 @@ TEST(CApiTest, RANGE_SEARCH_WITH_RADIUS_AND_RANGE_FILTER_WHEN_IP_BFLOAT16) {
 TEST(CApiTest, IsLoadWithDisk) {
     ASSERT_TRUE(IsLoadWithDisk(INVERTED_INDEX_TYPE, 0));
 }
+
+TEST(CApiTest, TestGetValueFromConfig) {
+    nlohmann::json cfg = nlohmann::json::parse(
+        R"({"a" : 100, "b" : true, "c" : "true", "d" : 1.234})");
+    auto a_value = GetValueFromConfig<int64_t>(cfg, "a");
+    ASSERT_EQ(a_value.value(), 100);
+
+    auto b_value = GetValueFromConfig<bool>(cfg, "b");
+    ASSERT_TRUE(b_value.value());
+
+    auto c_value = GetValueFromConfig<bool>(cfg, "c");
+    ASSERT_TRUE(c_value.value());
+
+    auto d_value = GetValueFromConfig<double>(cfg, "d");
+    ASSERT_NEAR(d_value.value(), 1.234, 0.001);
+
+    try {
+        GetValueFromConfig<std::string>(cfg, "d");
+    } catch (const std::exception& e) {
+        std::cout << e.what() << std::endl;
+        ASSERT_EQ(std::string(e.what()).find("get value from config for key") !=
+                      std::string::npos,
+                  true);
+    }
+}