Ollama: add model auto-pull feature

models/spring-ai-ollama/src/main/java/org/springframework/ai/ollama/OllamaChatModel.java

@@ -47,6 +47,7 @@
 import org.springframework.ai.ollama.api.OllamaApi.Message.Role;
 import org.springframework.ai.ollama.api.OllamaApi.Message.ToolCall;
 import org.springframework.ai.ollama.api.OllamaApi.Message.ToolCallFunction;
+import org.springframework.ai.ollama.api.OllamaModelPuller;
 import org.springframework.ai.ollama.api.OllamaOptions;
 import org.springframework.ai.ollama.metadata.OllamaChatUsage;
 import org.springframework.util.Assert;
@@ -92,6 +93,8 @@ public class OllamaChatModel extends AbstractToolCallSupport implements ChatMode
 	 */
 	private ChatModelObservationConvention observationConvention = DEFAULT_OBSERVATION_CONVENTION;
 
+	private final OllamaModelPuller modelPuller;
+
 	public OllamaChatModel(OllamaApi ollamaApi) {
 		this(ollamaApi, OllamaOptions.create().withModel(OllamaOptions.DEFAULT_MODEL));
 	}
@@ -120,10 +123,12 @@ public OllamaChatModel(OllamaApi chatApi, OllamaOptions defaultOptions,
 		this.chatApi = chatApi;
 		this.defaultOptions = defaultOptions;
 		this.observationRegistry = observationRegistry;
+		this.modelPuller = new OllamaModelPuller(chatApi);
 	}
 
 	@Override
 	public ChatResponse call(Prompt prompt) {
+
 		OllamaApi.ChatRequest request = ollamaChatRequest(prompt, false);
 
 		ChatModelObservationContext observationContext = ChatModelObservationContext.builder()
@@ -319,6 +324,11 @@ else if (message instanceof ToolResponseMessage toolMessage) {
 		}
 		OllamaOptions mergedOptions = ModelOptionsUtils.merge(runtimeOptions, this.defaultOptions, OllamaOptions.class);
 
+		mergedOptions.setPullMissingModel(this.defaultOptions.isPullMissingModel());
+		if (runtimeOptions != null && runtimeOptions.isPullMissingModel() != null) {
+			mergedOptions.setPullMissingModel(runtimeOptions.isPullMissingModel());
+		}
+
 		// Override the model.
 		if (!StringUtils.hasText(mergedOptions.getModel())) {
 			throw new IllegalArgumentException("Model is not set!");
@@ -343,6 +353,10 @@ else if (message instanceof ToolResponseMessage toolMessage) {
 			requestBuilder.withTools(this.getFunctionTools(functionsForThisRequest));
 		}
 
+		if (mergedOptions.isPullMissingModel()) {
+			this.modelPuller.pullModel(mergedOptions.getModel(), true);
+		}
+
 		return requestBuilder.build();
 	}
 

models/spring-ai-ollama/src/main/java/org/springframework/ai/ollama/OllamaEmbeddingModel.java

@@ -32,6 +32,7 @@
 import org.springframework.ai.model.ModelOptionsUtils;
 import org.springframework.ai.ollama.api.OllamaApi;
 import org.springframework.ai.ollama.api.OllamaApi.EmbeddingsResponse;
+import org.springframework.ai.ollama.api.OllamaModelPuller;
 import org.springframework.ai.ollama.api.OllamaOptions;
 import org.springframework.ai.ollama.metadata.OllamaEmbeddingUsage;
 import org.springframework.util.Assert;
@@ -75,6 +76,8 @@ public class OllamaEmbeddingModel extends AbstractEmbeddingModel {
 	 */
 	private EmbeddingModelObservationConvention observationConvention = DEFAULT_OBSERVATION_CONVENTION;
 
+	private final OllamaModelPuller modelPuller;
+
 	public OllamaEmbeddingModel(OllamaApi ollamaApi) {
 		this(ollamaApi, OllamaOptions.create().withModel(OllamaOptions.DEFAULT_MODEL));
 	}
@@ -92,6 +95,7 @@ public OllamaEmbeddingModel(OllamaApi ollamaApi, OllamaOptions defaultOptions,
 		this.ollamaApi = ollamaApi;
 		this.defaultOptions = defaultOptions;
 		this.observationRegistry = observationRegistry;
+		this.modelPuller = new OllamaModelPuller(ollamaApi);
 	}
 
 	@Override
@@ -149,12 +153,21 @@ OllamaApi.EmbeddingsRequest ollamaEmbeddingRequest(List<String> inputContent, Em
 
 		OllamaOptions mergedOptions = ModelOptionsUtils.merge(runtimeOptions, this.defaultOptions, OllamaOptions.class);
 
+		mergedOptions.setPullMissingModel(this.defaultOptions.isPullMissingModel());
+		if (runtimeOptions != null && runtimeOptions.isPullMissingModel() != null) {
+			mergedOptions.setPullMissingModel(runtimeOptions.isPullMissingModel());
+		}
+
 		// Override the model.
 		if (!StringUtils.hasText(mergedOptions.getModel())) {
 			throw new IllegalArgumentException("Model is not set!");
 		}
 		String model = mergedOptions.getModel();
 
+		if (mergedOptions.isPullMissingModel()) {
+			this.modelPuller.pullModel(model, true);
+		}
+
 		return new OllamaApi.EmbeddingsRequest(model, inputContent, DurationParser.parse(mergedOptions.getKeepAlive()),
 				OllamaOptions.filterNonSupportedFields(mergedOptions.toMap()), mergedOptions.getTruncate());
 	}

models/spring-ai-ollama/src/main/java/org/springframework/ai/ollama/api/OllamaModelPuller.java

@@ -0,0 +1,90 @@
+/*
+* Copyright 2024 - 2024 the original author or authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* https://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+package org.springframework.ai.ollama.api;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.ai.ollama.api.OllamaApi.DeleteModelRequest;
+import org.springframework.ai.ollama.api.OllamaApi.ListModelResponse;
+import org.springframework.ai.ollama.api.OllamaApi.PullModelRequest;
+import org.springframework.http.HttpStatus;
+import org.springframework.util.CollectionUtils;
+
+/**
+ * Helper class that allow to check if a model is available locally and pull it if not.
+ *
+ * @author Christian Tzolov
+ * @since 1.0.0
+ */
+public class OllamaModelPuller {
+
+	private final Logger logger = LoggerFactory.getLogger(OllamaModelPuller.class);
+
+	private OllamaApi ollamaApi;
+
+	public OllamaModelPuller(OllamaApi ollamaApi) {
+		this.ollamaApi = ollamaApi;
+	}
+
+	public boolean isModelAvailable(String modelName) {
+		ListModelResponse modelsResponse = ollamaApi.listModels();
+		if (!CollectionUtils.isEmpty(modelsResponse.models())) {
+			return modelsResponse.models().stream().anyMatch(m -> m.name().equals(modelName));
+		}
+		return false;
+	}
+
+	public boolean deleteModel(String modelName) {
+		logger.info("Delete model: {}", modelName);
+		if (!isModelAvailable(modelName)) {
+			logger.info("Model: {} not found!", modelName);
+			return false;
+		}
+		return this.ollamaApi.deleteModel(new DeleteModelRequest(modelName)).getStatusCode().equals(HttpStatus.OK);
+	}
+
+	public String pullModel(String modelName, boolean reTry) {
+		String status = "";
+		do {
+			logger.info("Start Pulling model: {}", modelName);
+			var progress = this.ollamaApi.pullModel(new PullModelRequest(modelName));
+			status = progress.status();
+			logger.info("Pulling model: {} - Status: {}", modelName, status);
+			try {
+				Thread.sleep(5000);
+			}
+			catch (InterruptedException e) {
+				e.printStackTrace();
+			}
+		}
+		while (reTry && !status.equals("success"));
+		return status;
+	}
+
+	public static void main(String[] args) {
+
+		var utils = new OllamaModelPuller(new OllamaApi());
+
+		System.out.println(utils.isModelAvailable("orca-mini:latest"));
+
+		String model = "hf.co/bartowski/Llama-3.2-3B-Instruct-GGUF:Q8_0";
+
+		if (!utils.isModelAvailable(model)) {
+			utils.pullModel(model, true);
+		}
+	}
+
+}

models/spring-ai-ollama/src/main/java/org/springframework/ai/ollama/api/OllamaOptions.java

@@ -304,6 +304,9 @@ public class OllamaOptions implements FunctionCallingOptions, ChatOptions, Embed
 	@JsonIgnore
 	private Map<String, Object> toolContext;
 
+	@JsonIgnore
+	private boolean pullMissingModel;
+
 	public static OllamaOptions builder() {
 		return new OllamaOptions();
 	}
@@ -516,6 +519,11 @@ public OllamaOptions withToolContext(Map<String, Object> toolContext) {
 		return this;
 	}
 
+	public OllamaOptions withPullMissingModel(boolean pullMissingModel) {
+		this.pullMissingModel = pullMissingModel;
+		return this;
+	}
+
 	// -------------------
 	// Getters and Setters
 	// -------------------
@@ -856,6 +864,14 @@ public void setToolContext(Map<String, Object> toolContext) {
 		this.toolContext = toolContext;
 	}
 
+	public Boolean isPullMissingModel() {
+		return this.pullMissingModel;
+	}
+
+	public void setPullMissingModel(boolean pullMissingModel) {
+		this.pullMissingModel = pullMissingModel;
+	}
+
 	/**
 	 * Convert the {@link OllamaOptions} object to a {@link Map} of key/value pairs.
 	 * @return The {@link Map} of key/value pairs.
@@ -926,7 +942,8 @@ public static OllamaOptions fromOptions(OllamaOptions fromOptions) {
 			.withFunctions(fromOptions.getFunctions())
 			.withProxyToolCalls(fromOptions.getProxyToolCalls())
 			.withFunctionCallbacks(fromOptions.getFunctionCallbacks())
-			.withToolContext(fromOptions.getToolContext());
+			.withToolContext(fromOptions.getToolContext())
+			.withPullMissingModel(fromOptions.isPullMissingModel());
 	}
 	// @formatter:on
 
@@ -956,7 +973,8 @@ public boolean equals(Object o) {
 				&& Objects.equals(penalizeNewline, that.penalizeNewline) && Objects.equals(stop, that.stop)
 				&& Objects.equals(functionCallbacks, that.functionCallbacks)
 				&& Objects.equals(proxyToolCalls, that.proxyToolCalls) && Objects.equals(functions, that.functions)
-				&& Objects.equals(toolContext, that.toolContext);
+				&& Objects.equals(toolContext, that.toolContext)
+				&& Objects.equals(pullMissingModel, that.pullMissingModel);
 	}
 
 	@Override
@@ -967,7 +985,7 @@ public int hashCode() {
 				this.topP, tfsZ, this.typicalP, this.repeatLastN, this.temperature, this.repeatPenalty,
 				this.presencePenalty, this.frequencyPenalty, this.mirostat, this.mirostatTau, this.mirostatEta,
 				this.penalizeNewline, this.stop, this.functionCallbacks, this.functions, this.proxyToolCalls,
-				this.toolContext);
+				this.toolContext, this.pullMissingModel);
 	}
 
 }

models/spring-ai-ollama/src/test/java/org/springframework/ai/ollama/BaseOllamaIT.java

@@ -10,7 +10,7 @@ public class BaseOllamaIT {
 	private static final Logger logger = LoggerFactory.getLogger(BaseOllamaIT.class);
 
 	// Toggle for running tests locally on native Ollama for a faster feedback loop.
-	private static final boolean useTestcontainers = true;
+	private static final boolean useTestcontainers = false;
 
 	public static final OllamaContainer ollamaContainer;
 
@@ -30,7 +30,7 @@ public class BaseOllamaIT {
 	 * to the file ".testcontainers.properties" located in your home directory
 	 */
 	public static boolean isDisabled() {
-		return true;
+		return false;
 	}
 
 	public static OllamaApi buildOllamaApiWithModel(String model) {

models/spring-ai-ollama/src/test/java/org/springframework/ai/ollama/OllamaChatModelIT.java

@@ -17,6 +17,7 @@
 
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.condition.DisabledIf;
+import org.springframework.ai.chat.client.ChatClient;
 import org.springframework.ai.chat.messages.AssistantMessage;
 import org.springframework.ai.chat.messages.Message;
 import org.springframework.ai.chat.messages.UserMessage;
@@ -32,6 +33,7 @@
 import org.springframework.ai.converter.MapOutputConverter;
 import org.springframework.ai.ollama.api.OllamaApi;
 import org.springframework.ai.ollama.api.OllamaModel;
+import org.springframework.ai.ollama.api.OllamaModelPuller;
 import org.springframework.ai.ollama.api.OllamaOptions;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.SpringBootConfiguration;
@@ -56,6 +58,26 @@ class OllamaChatModelIT extends BaseOllamaIT {
 	@Autowired
 	private OllamaChatModel chatModel;
 
+	@Autowired
+	private OllamaApi ollamaApi;
+
+	@Test
+	void autoPullModelTest() {
+		var puller = new OllamaModelPuller(ollamaApi);
+		puller.deleteModel("tinyllama");
+
+		assertThat(puller.isModelAvailable("tinyllama")).isFalse();
+
+		String joke = ChatClient.create(chatModel)
+			.prompt("Tell me a joke")
+			.options(OllamaOptions.builder().withModel("tinyllama").withPullMissingModel(true).build())
+			.call()
+			.content();
+
+		assertThat(joke).isNotEmpty();
+		assertThat(puller.isModelAvailable("tinyllamaf")).isFalse();
+	}
+
 	@Test
 	void roleTest() {
 		Message systemMessage = new SystemPromptTemplate("""

models/spring-ai-ollama/src/test/java/org/springframework/ai/ollama/OllamaEmbeddingModelIT.java

@@ -20,7 +20,9 @@
 import org.springframework.ai.embedding.EmbeddingRequest;
 import org.springframework.ai.embedding.EmbeddingResponse;
 import org.springframework.ai.ollama.api.OllamaApi;
+import org.springframework.ai.ollama.api.OllamaApi.DeleteModelRequest;
 import org.springframework.ai.ollama.api.OllamaModel;
+import org.springframework.ai.ollama.api.OllamaModelPuller;
 import org.springframework.ai.ollama.api.OllamaOptions;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.SpringBootConfiguration;
@@ -42,6 +44,9 @@ class OllamaEmbeddingModelIT extends BaseOllamaIT {
 	@Autowired
 	private OllamaEmbeddingModel embeddingModel;
 
+	@Autowired
+	private OllamaApi ollamaApi;
+
 	@Test
 	void embeddings() {
 		assertThat(embeddingModel).isNotNull();
@@ -59,6 +64,37 @@ void embeddings() {
 		assertThat(embeddingModel.dimensions()).isEqualTo(768);
 	}
 
+	@Test
+	void autoPullModel() {
+		assertThat(embeddingModel).isNotNull();
+
+		var puller = new OllamaModelPuller(ollamaApi);
+		puller.deleteModel("all-minilm:latest");
+
+		assertThat(puller.isModelAvailable("all-minilm")).isFalse();
+
+		EmbeddingResponse embeddingResponse = embeddingModel
+			.call(new EmbeddingRequest(List.of("Hello World", "Something else"),
+					OllamaOptions.builder()
+						.withModel("all-minilm:latest")
+						.withPullMissingModel(true)
+						.withTruncate(false)
+						.build()));
+
+		assertThat(puller.isModelAvailable("all-minilm:latest")).isTrue();
+
+		assertThat(embeddingResponse.getResults()).hasSize(2);
+		assertThat(embeddingResponse.getResults().get(0).getIndex()).isEqualTo(0);
+		assertThat(embeddingResponse.getResults().get(0).getOutput()).isNotEmpty();
+		assertThat(embeddingResponse.getResults().get(1).getIndex()).isEqualTo(1);
+		assertThat(embeddingResponse.getResults().get(1).getOutput()).isNotEmpty();
+		assertThat(embeddingResponse.getMetadata().getModel()).isEqualTo("all-minilm:latest");
+		assertThat(embeddingResponse.getMetadata().getUsage().getPromptTokens()).isEqualTo(4);
+		assertThat(embeddingResponse.getMetadata().getUsage().getTotalTokens()).isEqualTo(4);
+
+		assertThat(embeddingModel.dimensions()).isEqualTo(768);
+	}
+
 	@SpringBootConfiguration
 	public static class TestConfiguration {