fix: omit temperature for search models and add tests

Signed-off-by: LeeJaeHyeok97 <[email protected]>

Author: LEEJaeHyeok97

auto-configurations/models/spring-ai-autoconfigure-model-openai/src/main/java/org/springframework/ai/model/openai/autoconfigure/OpenAiChatAutoConfiguration.java

@@ -27,6 +27,7 @@
 import org.springframework.ai.model.tool.ToolExecutionEligibilityPredicate;
 import org.springframework.ai.model.tool.autoconfigure.ToolCallingAutoConfiguration;
 import org.springframework.ai.openai.OpenAiChatModel;
+import org.springframework.ai.openai.OpenAiChatOptions;
 import org.springframework.ai.openai.api.OpenAiApi;
 import org.springframework.ai.retry.autoconfigure.SpringAiRetryAutoConfiguration;
 import org.springframework.beans.factory.ObjectProvider;
@@ -72,7 +73,18 @@ public OpenAiChatModel openAiChatModel(OpenAiConnectionProperties commonProperti
 			RetryTemplate retryTemplate, ResponseErrorHandler responseErrorHandler,
 			ObjectProvider<ObservationRegistry> observationRegistry,
 			ObjectProvider<ChatModelObservationConvention> observationConvention,
-			ObjectProvider<ToolExecutionEligibilityPredicate> openAiToolExecutionEligibilityPredicate) {
+			ObjectProvider<ToolExecutionEligibilityPredicate> openAiToolExecutionEligibilityPredicate,
+			ObjectProvider<OpenAiChatOptions> userOptionsProvider) {
+
+		OpenAiChatOptions defaultOptions = chatProperties.getOptions();
+		OpenAiChatOptions userOptions = userOptionsProvider.getIfAvailable();
+
+		if (defaultOptions.getModel().startsWith("text-search-")) {
+			defaultOptions.setTemperature(null);
+		}
+		else if (userOptions != null && userOptions.getTemperature() != null) {
+			defaultOptions.setTemperature(userOptions.getTemperature());
+		}
 
 		var openAiApi = openAiApi(chatProperties, commonProperties,
 				restClientBuilderProvider.getIfAvailable(RestClient::builder),

auto-configurations/models/spring-ai-autoconfigure-model-openai/src/test/java/org/springframework/ai/model/openai/autoconfigure/OpenAiChatAutoConfigurationTest.java

@@ -0,0 +1,59 @@
+package org.springframework.ai.model.openai.autoconfigure;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.ai.chat.prompt.ChatOptions;
+import org.springframework.ai.openai.OpenAiChatModel;
+import org.springframework.ai.openai.OpenAiChatOptions;
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class OpenAiChatAutoConfigurationTest {
+
+	private final ApplicationContextRunner runner = new ApplicationContextRunner()
+			.withConfiguration(AutoConfigurations.of(OpenAiChatAutoConfiguration.class))
+			.withPropertyValues("spring.ai.openai.apiKey=" + System.getenv("OPENAI_API_KEY"),
+					"spring.ai.openai.chat.options.temperature=0.8");
+
+	@Test
+	void whenUserDefinesTemperature_thenOverride() {
+		runner.withUserConfiguration(UserOptionsConfig.class)
+				.run(context -> {
+					assertThat(context).hasSingleBean(OpenAiChatModel.class);
+					ChatOptions opts = context.getBean(OpenAiChatModel.class).getDefaultOptions();
+					assertThat(opts.getTemperature()).isEqualTo(0.42);
+				});
+	}
+
+	@Test
+	void whenNoUserOptions_thenDefaultTemperatureRetained() {
+		runner.run(context -> {
+			assertThat(context).hasSingleBean(OpenAiChatModel.class);
+			ChatOptions opts = context.getBean(OpenAiChatModel.class).getDefaultOptions();
+			assertThat(opts.getTemperature()).isEqualTo(0.8);
+		});
+	}
+
+	@Test
+	void whenSearchModel_thenTemperatureOmitted() {
+		runner.withPropertyValues("spring.ai.openai.chat.options.model=text-search-abc")
+				.run(context -> {
+					assertThat(context).hasSingleBean(OpenAiChatModel.class);
+					ChatOptions opts = context.getBean(OpenAiChatModel.class).getDefaultOptions();
+					assertThat(opts.getTemperature()).isNull();
+				});
+	}
+
+	@Configuration
+	static class UserOptionsConfig {
+		@Bean
+		public OpenAiChatOptions userOptions() {
+			OpenAiChatOptions openAiChatOptions = new OpenAiChatOptions();
+			openAiChatOptions.setTemperature(0.42);
+			return openAiChatOptions;
+		}
+	}
+}