Allow OllamaApiAutoConfiguration conditional instantiation based on chat model and embedding model properties

- Introduce OllamaChatOrEmbeddingCondition for this logic
- Add unit tests covering the different scenarios

Signed-off-by: Nicolas Krier <7557886+nicolaskrier@users.noreply.github.com>

Author: nicolaskrier

auto-configurations/models/spring-ai-autoconfigure-model-ollama/src/main/java/org/springframework/ai/model/ollama/autoconfigure/OllamaApiAutoConfiguration.java

@@ -16,16 +16,26 @@
 
 package org.springframework.ai.model.ollama.autoconfigure;
 
+import org.jspecify.annotations.NonNull;
+
+import org.springframework.ai.model.SpringAIModelProperties;
+import org.springframework.ai.model.SpringAIModels;
 import org.springframework.ai.ollama.api.OllamaApi;
 import org.springframework.ai.retry.autoconfigure.SpringAiRetryAutoConfiguration;
 import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.boot.autoconfigure.AutoConfiguration;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.condition.ConditionMessage;
+import org.springframework.boot.autoconfigure.condition.ConditionOutcome;
+import org.springframework.boot.autoconfigure.condition.SpringBootCondition;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.boot.restclient.autoconfigure.RestClientAutoConfiguration;
 import org.springframework.boot.webclient.autoconfigure.WebClientAutoConfiguration;
 import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ConditionContext;
+import org.springframework.context.annotation.Conditional;
+import org.springframework.core.type.AnnotatedTypeMetadata;
 import org.springframework.web.client.ResponseErrorHandler;
 import org.springframework.web.client.RestClient;
 import org.springframework.web.reactive.function.client.WebClient;
@@ -37,11 +47,13 @@
  * @author Eddú Meléndez
  * @author Thomas Vitale
  * @author Ilayaperumal Gopinathan
+ * @author Nicolas Krier
  * @since 0.8.0
  */
 @AutoConfiguration(after = { RestClientAutoConfiguration.class, WebClientAutoConfiguration.class,
 		SpringAiRetryAutoConfiguration.class })
 @ConditionalOnClass(OllamaApi.class)
+@Conditional(OllamaApiAutoConfiguration.OllamaChatOrEmbeddingCondition.class)
 @EnableConfigurationProperties(OllamaConnectionProperties.class)
 public class OllamaApiAutoConfiguration {
 
@@ -53,7 +65,7 @@ PropertiesOllamaConnectionDetails ollamaConnectionDetails(OllamaConnectionProper
 
 	@Bean
 	@ConditionalOnMissingBean
-	public OllamaApi ollamaApi(OllamaConnectionDetails connectionDetails,
+	OllamaApi ollamaApi(OllamaConnectionDetails connectionDetails,
 			ObjectProvider<RestClient.Builder> restClientBuilderProvider,
 			ObjectProvider<WebClient.Builder> webClientBuilderProvider, ResponseErrorHandler responseErrorHandler) {
 		return OllamaApi.builder()
@@ -79,4 +91,30 @@ public String getBaseUrl() {
 
 	}
 
+	static class OllamaChatOrEmbeddingCondition extends SpringBootCondition {
+
+		@Override
+		public @NonNull ConditionOutcome getMatchOutcome(@NonNull ConditionContext context,
+				@NonNull AnnotatedTypeMetadata metadata) {
+			var messageBuilder = ConditionMessage.forCondition("OllamaChatOrEmbeddingCondition");
+			var environment = context.getEnvironment();
+			var chatModel = environment.getProperty(SpringAIModelProperties.CHAT_MODEL, SpringAIModels.OLLAMA);
+
+			if (SpringAIModels.OLLAMA.equals(chatModel)) {
+				return ConditionOutcome.match(messageBuilder.because("Chat model corresponds to Ollama."));
+			}
+
+			var embeddingModel = environment.getProperty(SpringAIModelProperties.EMBEDDING_MODEL,
+					SpringAIModels.OLLAMA);
+
+			if (SpringAIModels.OLLAMA.equals(embeddingModel)) {
+				return ConditionOutcome.match(messageBuilder.because("Embedding model corresponds to Ollama."));
+			}
+
+			return ConditionOutcome
+				.noMatch(messageBuilder.because("Neither chat model nor embedding model correspond to Ollama."));
+		}
+
+	}
+
 }

auto-configurations/models/spring-ai-autoconfigure-model-ollama/src/test/java/org/springframework/ai/model/ollama/autoconfigure/OllamaModelConfigurationTests.java

@@ -20,19 +20,55 @@
 
 import org.springframework.ai.ollama.OllamaChatModel;
 import org.springframework.ai.ollama.OllamaEmbeddingModel;
+import org.springframework.ai.ollama.api.OllamaApi;
+import org.springframework.ai.utils.SpringAiTestAutoConfigurations;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
 
+import java.util.List;
+
 import static org.assertj.core.api.Assertions.assertThat;
 
 /**
  * Unit Tests for Ollama auto-configurations conditional enabling of models.
  *
  * @author Ilayaperumal Gopinathan
+ * @author Nicolas Krier
  */
-public class OllamaModelConfigurationTests {
+class OllamaModelConfigurationTests {
 
 	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner();
 
+	@Test
+	void apiActivation() {
+		this.contextRunner.withConfiguration(SpringAiTestAutoConfigurations.of(OllamaApiAutoConfiguration.class))
+			.withPropertyValues("spring.ai.model.chat=none", "spring.ai.model.embedding=none")
+			.run(context -> {
+				assertThat(context).hasNotFailed();
+				assertThat(context).doesNotHaveBean(OllamaApiAutoConfiguration.PropertiesOllamaConnectionDetails.class);
+				assertThat(context).doesNotHaveBean(OllamaApi.class);
+			});
+
+		List.of(
+		// @formatter:off
+				this.contextRunner
+					.withConfiguration(SpringAiTestAutoConfigurations.of(OllamaApiAutoConfiguration.class)),
+				this.contextRunner
+					.withConfiguration(SpringAiTestAutoConfigurations.of(OllamaApiAutoConfiguration.class))
+					.withPropertyValues("spring.ai.model.chat=ollama", "spring.ai.model.embedding=ollama"),
+				this.contextRunner
+					.withConfiguration(SpringAiTestAutoConfigurations.of(OllamaApiAutoConfiguration.class))
+					.withPropertyValues("spring.ai.model.chat=ollama", "spring.ai.model.embedding=none"),
+				this.contextRunner
+					.withConfiguration(SpringAiTestAutoConfigurations.of(OllamaApiAutoConfiguration.class))
+					.withPropertyValues("spring.ai.model.chat=none", "spring.ai.model.embedding=ollama")
+		// @formatter:on
+		).forEach(runner -> runner.run(context -> {
+			assertThat(context).hasNotFailed();
+			assertThat(context).hasSingleBean(OllamaApiAutoConfiguration.PropertiesOllamaConnectionDetails.class);
+			assertThat(context).hasSingleBean(OllamaApi.class);
+		}));
+	}
+
 	@Test
 	void chatModelActivation() {
 		this.contextRunner.withConfiguration(BaseOllamaIT.ollamaAutoConfig(OllamaChatAutoConfiguration.class))