Enable Ollama integration test

Currently, test is disable because in every run the image should
be downloaded and then pull the model. Now, taking advantage of
Testcontainers and a GHA, a new image is created on-the-fly with
the model in it and then cached, so, next executions will reuse the
cached image instead.

Fixes #121

.github/workflows/continuous-integration.yml

@@ -19,6 +19,11 @@ jobs:
           distribution: 'temurin'
           cache: 'maven'
 
+      - name: Cache Docker images.
+        uses: ScribeMD/docker-cache@0.3.6
+        with:
+          key: docker-${{ runner.os }}-${{ hashFiles('**/OllamaImage.java') }}
+
       - name: Build with Maven and deploy to Artifactory
         env:
           OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}

spring-ai-spring-boot-autoconfigure/src/test/java/org/springframework/ai/autoconfigure/ollama/OllamaChatAutoConfigurationIT.java

@@ -16,10 +16,12 @@
 
 package org.springframework.ai.autoconfigure.ollama;
 
+import com.github.dockerjava.api.DockerClient;
+import com.github.dockerjava.api.command.InspectContainerResponse;
+import com.github.dockerjava.api.model.Image;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.junit.jupiter.api.BeforeAll;
-import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 import org.springframework.ai.chat.ChatResponse;
 import org.springframework.ai.chat.Generation;
@@ -32,12 +34,14 @@ import org.springframework.ai.chat.messages.UserMessage;
 import org.springframework.boot.autoconfigure.AutoConfigurations;
 import org.springframework.boot.autoconfigure.web.client.RestClientAutoConfiguration;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.testcontainers.DockerClientFactory;
 import org.testcontainers.containers.GenericContainer;
-import org.testcontainers.junit.jupiter.Container;
 import org.testcontainers.junit.jupiter.Testcontainers;
+import org.testcontainers.utility.DockerImageName;
 import reactor.core.publisher.Flux;
 
 import java.io.IOException;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
@@ -46,9 +50,9 @@ import static org.assertj.core.api.Assertions.assertThat;
 
 /**
  * @author Christian Tzolov
+ * @author Eddú Meléndez
  * @since 0.8.0
  */
-@Disabled("For manual smoke testing only.")
 @Testcontainers
 public class OllamaChatAutoConfigurationIT {
 
@@ -56,8 +60,15 @@ public class OllamaChatAutoConfigurationIT {
 
 	private static String MODEL_NAME = "mistral";
 
-	@Container
-	static GenericContainer<?> ollamaContainer = new GenericContainer<>("ollama/ollama:0.1.23").withExposedPorts(11434);
+	private static final String OLLAMA_WITH_MODEL = "%s-%s".formatted(MODEL_NAME, OllamaImage.IMAGE);
+
+	private static final OllamaContainer ollamaContainer;
+
+	static {
+		ollamaContainer = new OllamaContainer(OllamaDockerImageName.image());
+		ollamaContainer.start();
+		createImage(ollamaContainer, OLLAMA_WITH_MODEL);
+	}
 
 	static String baseUrl;
 
@@ -138,4 +149,72 @@ public class OllamaChatAutoConfigurationIT {
 		});
 	}
 
+	static class OllamaContainer extends GenericContainer<OllamaContainer> {
+
+		private final DockerImageName dockerImageName;
+
+		OllamaContainer(DockerImageName image) {
+			super(image);
+			this.dockerImageName = image;
+			withExposedPorts(11434);
+			withImagePullPolicy(dockerImageName -> !dockerImageName.getUnversionedPart().startsWith(MODEL_NAME));
+		}
+
+		@Override
+		protected void containerIsStarted(InspectContainerResponse containerInfo) {
+			if (!this.dockerImageName.getVersionPart().endsWith(MODEL_NAME)) {
+				try {
+					execInContainer("ollama", "pull", MODEL_NAME);
+				}
+				catch (IOException | InterruptedException e) {
+					throw new RuntimeException("Error pulling orca-mini model", e);
+				}
+			}
+		}
+
+	}
+
+	static void createImage(GenericContainer<?> container, String localImageName) {
+		DockerImageName dockerImageName = DockerImageName.parse(container.getDockerImageName());
+		if (!dockerImageName.equals(DockerImageName.parse(localImageName))) {
+			DockerClient dockerClient = DockerClientFactory.instance().client();
+			List<Image> images = dockerClient.listImagesCmd().withReferenceFilter(localImageName).exec();
+			if (images.isEmpty()) {
+				DockerImageName imageModel = DockerImageName.parse(localImageName);
+				dockerClient.commitCmd(container.getContainerId())
+					.withRepository(imageModel.getUnversionedPart())
+					.withLabels(Collections.singletonMap("org.testcontainers.sessionId", ""))
+					.withTag(imageModel.getVersionPart())
+					.exec();
+			}
+		}
+	}
+
+	static class OllamaDockerImageName {
+
+		private final String baseImage;
+
+		private final String localImageName;
+
+		OllamaDockerImageName(String baseImage, String localImageName) {
+			this.baseImage = baseImage;
+			this.localImageName = localImageName;
+		}
+
+		static DockerImageName image() {
+			return new OllamaDockerImageName(OllamaImage.IMAGE, OLLAMA_WITH_MODEL).resolve();
+		}
+
+		private DockerImageName resolve() {
+			var dockerImageName = DockerImageName.parse(this.baseImage);
+			var dockerClient = DockerClientFactory.instance().client();
+			var images = dockerClient.listImagesCmd().withReferenceFilter(this.localImageName).exec();
+			if (images.isEmpty()) {
+				return dockerImageName;
+			}
+			return DockerImageName.parse(this.localImageName);
+		}
+
+	}
+
 }

spring-ai-spring-boot-autoconfigure/src/test/java/org/springframework/ai/autoconfigure/ollama/OllamaImage.java

@@ -0,0 +1,7 @@
+package org.springframework.ai.autoconfigure.ollama;
+
+public class OllamaImage {
+
+	static final String IMAGE = "ollama/ollama:0.1.23";
+
+}