Added APIs to pass images and ask questions on it with LLaVA model

README.md

@@ -2,7 +2,8 @@
 
 <img src='https://raw.githubusercontent.com/amithkoujalgi/ollama4j/65a9d526150da8fcd98e2af6a164f055572bf722/ollama4j.jpeg' width='100' alt="ollama4j-icon">
 
-A Java library (wrapper/binding) for [Ollama](https://github.com/jmorganca/ollama/blob/main/docs/api.md) APIs.
+A Java library (wrapper/binding)
+for [Ollama](https://github.com/jmorganca/ollama/blob/main/docs/api.md) APIs.
 
 ```mermaid
   flowchart LR
@@ -38,7 +39,8 @@ A Java library (wrapper/binding) for [Ollama](https://github.com/jmorganca/ollam
 
 #### Requirements
 
-- Ollama (Either [natively](https://ollama.ai/download) setup or via [Docker](https://hub.docker.com/r/ollama/ollama))
+- Ollama (Either [natively](https://ollama.ai/download) setup or
+  via [Docker](https://hub.docker.com/r/ollama/ollama))
 - Java 11 or above
 
 #### Installation
@@ -55,7 +57,8 @@ the [Central Repository](https://s01.oss.sonatype.org/#nexus-search;quick~ollama
 </dependency>
 ```
 
-You might want to include the Maven repository to pull the ollama4j library from. Include this in your `pom.xml`:
+You might want to include the Maven repository to pull the ollama4j library from. Include this in
+your `pom.xml`:
 
 ```xml
 
@@ -104,6 +107,7 @@ Instantiate `OllamaAPI`
 
 ```java
 public class Main {
+
   public static void main(String[] args) {
     String host = "http://localhost:11434/";
     OllamaAPI ollamaAPI = new OllamaAPI(host);
@@ -118,6 +122,7 @@ public class Main {
 
 ```java
 public class Main {
+
   public static void main(String[] args) {
     String host = "http://localhost:11434/";
     OllamaAPI ollamaAPI = new OllamaAPI(host);
@@ -132,6 +137,7 @@ _Find the list of available models from Ollama [here](https://ollama.ai/library)
 
 ```java
 public class Main {
+
   public static void main(String[] args) {
     String host = "http://localhost:11434/";
     OllamaAPI ollamaAPI = new OllamaAPI(host);
@@ -152,6 +158,7 @@ sqlcoder:latest
 
 ```java
 public class Main {
+
   public static void main(String[] args) {
     String host = "http://localhost:11434/";
     OllamaAPI ollamaAPI = new OllamaAPI(host);
@@ -176,6 +183,7 @@ Response:
 
 ```java
 public class Main {
+
   public static void main(String[] args) {
     String host = "http://localhost:11434/";
     OllamaAPI ollamaAPI = new OllamaAPI(host);
@@ -188,6 +196,7 @@ public class Main {
 
 ```java
 public class Main {
+
   public static void main(String[] args) {
     String host = "http://localhost:11434/";
     OllamaAPI ollamaAPI = new OllamaAPI(host);
@@ -201,10 +210,12 @@ public class Main {
 
 ```java
 public class Main {
+
   public static void main(String[] args) {
     String host = "http://localhost:11434/";
     OllamaAPI ollamaAPI = new OllamaAPI(host);
-        List<Double> embeddings = ollamaAPI.generateEmbeddings(OllamaModelType.LLAMA2, "Here is an article about llamas...");
+    List<Double> embeddings = ollamaAPI.generateEmbeddings(OllamaModelType.LLAMA2,
+        "Here is an article about llamas...");
     embeddings.forEach(System.out::println);
   }
 }
@@ -216,6 +227,7 @@ public class Main {
 
 ```java
 public class Main {
+
   public static void main(String[] args) {
     String host = "http://localhost:11434/";
     OllamaAPI ollamaAPI = new OllamaAPI(host);
@@ -229,10 +241,12 @@ public class Main {
 
 ```java
 public class Main {
+
   public static void main(String[] args) {
     String host = "http://localhost:11434/";
     OllamaAPI ollamaAPI = new OllamaAPI(host);
-        OllamaAsyncResultCallback ollamaAsyncResultCallback = ollamaAPI.askAsync(OllamaModelType.LLAMA2, "Who are you?");
+    OllamaAsyncResultCallback ollamaAsyncResultCallback = ollamaAPI.askAsync(OllamaModelType.LLAMA2,
+        "Who are you?");
     while (true) {
       if (ollamaAsyncResultCallback.isComplete()) {
         System.out.println(ollamaAsyncResultCallback.getResponse());
@@ -247,9 +261,12 @@ public class Main {
 
 You'd then get a response from the model:
 
-> I am LLaMA, an AI assistant developed by Meta AI that can understand and respond to human input in a conversational
+> I am LLaMA, an AI assistant developed by Meta AI that can understand and respond to human input in
-> manner. I am trained on a massive dataset of text from the internet and can generate human-like responses to a wide
+> a conversational
-> range of topics and questions. I can be used to create chatbots, virtual assistants, and other applications that
+> manner. I am trained on a massive dataset of text from the internet and can generate human-like
+> responses to a wide
+> range of topics and questions. I can be used to create chatbots, virtual assistants, and other
+> applications that
 > require
 > natural language understanding and generation capabilities.
 
@@ -257,6 +274,7 @@ You'd then get a response from the model:
 
 ```java
 public class Main {
+
   public static void main(String[] args) {
     String host = "http://localhost:11434/";
     OllamaAPI ollamaAPI = new OllamaAPI(host);
@@ -270,7 +288,8 @@ public class Main {
 
 You'd then get a response from the model:
 
-> The 2019 ICC Cricket World Cup was held in England and Wales from May 30 to July 14, 2019. The following teams
+> The 2019 ICC Cricket World Cup was held in England and Wales from May 30 to July 14, 2019. The
+> following teams
 > participated in the tournament:
 >
 > 1. Australia
@@ -283,18 +302,21 @@ You'd then get a response from the model:
 > 8. Sri Lanka
 > 9. West Indies
 >
-> These teams competed in a round-robin format, with the top four teams advancing to the semi-finals. The tournament was
+> These teams competed in a round-robin format, with the top four teams advancing to the
+> semi-finals. The tournament was
 > won by the England cricket team, who defeated New Zealand in the final.
 
 #### Try asking for a Database query for your data schema:
 
 ```java
 public class Main {
+
   public static void main(String[] args) {
     String host = "http://localhost:11434/";
     OllamaAPI ollamaAPI = new OllamaAPI(host);
 
-        String prompt = SamplePrompts.getSampleDatabasePromptWithQuestion("List all customer names who have bought one or more products");
+    String prompt = SamplePrompts.getSampleDatabasePromptWithQuestion(
+        "List all customer names who have bought one or more products");
     String response = ollamaAPI.ask(OllamaModelType.SQLCODER, prompt);
     System.out.println(response);
   }
@@ -315,12 +337,60 @@ FROM sales
 GROUP BY customers.name;
 ```
 
+#### Try asking some questions by passing images 🖼️:
+
+With Files:
+
+```java
+public class Main {
+
+  public static void main(String[] args) {
+    String host = "http://localhost:11434/";
+    OllamaAPI ollamaAPI = new OllamaAPI(host);
+    ollamaAPI.setRequestTimeoutSeconds(10);
+
+    OllamaResult response = ollamaAPI.askWithImageURLs(OllamaModelType.LLAVA,
+        "What's in this image?",
+        List.of(
+            "/path/to/image"));
+    System.out.println(response);
+  }
+}
+```
+
+With URLs:
+
+```java
+public class Main {
+
+  public static void main(String[] args) {
+    String host = "http://localhost:11434/";
+    OllamaAPI ollamaAPI = new OllamaAPI(host);
+    ollamaAPI.setRequestTimeoutSeconds(10);
+
+    OllamaResult response = ollamaAPI.askWithImageURLs(OllamaModelType.LLAVA,
+        "What's in this image?",
+        List.of(
+            "https://t3.ftcdn.net/jpg/02/96/63/80/360_F_296638053_0gUVA4WVBKceGsIr7LNqRWSnkusi07dq.jpg"));
+    System.out.println(response);
+  }
+}
+```
+
+You'd then get a response from the model:
+
+```
+This image features a white boat with brown cushions, where a dog is sitting on the back of the boat. 
+The dog seems to be enjoying its time outdoors, perhaps on a lake.
+```
+
 #### Async API with streaming response
 
 ```java
 
 @SuppressWarnings("ALL")
 public class Main {
+
   public static void main(String[] args) {
     String host = "http://localhost:11434/";
     OllamaAPI ollamaAPI = new OllamaAPI(host);
@@ -369,14 +439,16 @@ make it
 
 ### Areas of improvement
 
-- [x] Use Java-naming conventions for attributes in the request/response models instead of the snake-case conventions. (
+- [x] Use Java-naming conventions for attributes in the request/response models instead of the
+  snake-case conventions. (
   possibly with Jackson-mapper's `@JsonProperty`)
 - [x] Fix deprecated HTTP client code
 - [ ] Add additional params for `ask` APIs such as:
     - `options`: additional model parameters for the Modelfile such as `temperature`
     - `system`: system prompt to (overrides what is defined in the Modelfile)
     - `template`: the full prompt or prompt template (overrides what is defined in the Modelfile)
-    - `context`: the context parameter returned from a previous request, which can be used to keep a short
+    - `context`: the context parameter returned from a previous request, which can be used to keep a
+      short
       conversational memory
     - `stream`: Add support for streaming responses from the model
 - [x] Setup logging
@@ -386,9 +458,11 @@ make it
 
 ### Get Involved
 
-Contributions are most welcome! Whether it's reporting a bug, proposing an enhancement, or helping with code - any sort
+Contributions are most welcome! Whether it's reporting a bug, proposing an enhancement, or helping
+with code - any sort
 of contribution is much appreciated.
 
 ### Credits
 
-The nomenclature and the icon have been adopted from the incredible [Ollama](https://ollama.ai/) project.
+The nomenclature and the icon have been adopted from the incredible [Ollama](https://ollama.ai/)
+project.

src/main/java/io/github/amithkoujalgi/ollama4j/core/OllamaAPI.java

@@ -4,28 +4,37 @@ import io.github.amithkoujalgi.ollama4j.core.exceptions.OllamaBaseException;
 import io.github.amithkoujalgi.ollama4j.core.models.*;
 import io.github.amithkoujalgi.ollama4j.core.utils.Utils;
 import java.io.BufferedReader;
+import java.io.ByteArrayOutputStream;
+import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.net.URI;
 import java.net.URISyntaxException;
+import java.net.URL;
 import java.net.http.HttpClient;
 import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
 import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import java.time.Duration;
+import java.util.ArrayList;
+import java.util.Base64;
 import java.util.List;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-/** The base Ollama API class. */
+/**
+ * The base Ollama API class.
+ */
 @SuppressWarnings("DuplicatedCode")
 public class OllamaAPI {
 
   private static final Logger logger = LoggerFactory.getLogger(OllamaAPI.class);
   private final String host;
-  private final long requestTimeoutSeconds = 3;
+  private long requestTimeoutSeconds = 3;
-  private boolean verbose = false;
+  private boolean verbose = true;
 
   /**
    * Instantiates the Ollama API.
@@ -40,6 +49,10 @@ public class OllamaAPI {
     }
   }
 
+  public void setRequestTimeoutSeconds(long requestTimeoutSeconds) {
+    this.requestTimeoutSeconds = requestTimeoutSeconds;
+  }
+
   /**
    * Set/unset logging of responses
    *
@@ -58,21 +71,15 @@ public class OllamaAPI {
       throws OllamaBaseException, IOException, InterruptedException, URISyntaxException {
     String url = this.host + "/api/tags";
     HttpClient httpClient = HttpClient.newHttpClient();
-    HttpRequest httpRequest =
+    HttpRequest httpRequest = HttpRequest.newBuilder().uri(new URI(url))
-        HttpRequest.newBuilder()
+        .header("Accept", "application/json").header("Content-type", "application/json")
-            .uri(new URI(url))
+        .timeout(Duration.ofSeconds(requestTimeoutSeconds)).GET().build();
-            .header("Accept", "application/json")
+    HttpResponse<String> response = httpClient.send(httpRequest,
-            .header("Content-type", "application/json")
+        HttpResponse.BodyHandlers.ofString());
-            .timeout(Duration.ofSeconds(requestTimeoutSeconds))
-            .GET()
-            .build();
-    HttpResponse<String> response =
-        httpClient.send(httpRequest, HttpResponse.BodyHandlers.ofString());
     int statusCode = response.statusCode();
     String responseString = response.body();
     if (statusCode == 200) {
-      return Utils.getObjectMapper()
+      return Utils.getObjectMapper().readValue(responseString, ListModelsResponse.class)
-          .readValue(responseString, ListModelsResponse.class)
           .getModels();
     } else {
       throw new OllamaBaseException(statusCode + " - " + responseString);
@@ -89,26 +96,22 @@ public class OllamaAPI {
       throws OllamaBaseException, IOException, URISyntaxException, InterruptedException {
     String url = this.host + "/api/pull";
     String jsonData = String.format("{\"name\": \"%s\"}", model);
-    HttpRequest request =
+    HttpRequest request = HttpRequest.newBuilder().uri(new URI(url))
-        HttpRequest.newBuilder()
+        .POST(HttpRequest.BodyPublishers.ofString(jsonData)).header("Accept", "application/json")
-            .uri(new URI(url))
-            .POST(HttpRequest.BodyPublishers.ofString(jsonData))
-            .header("Accept", "application/json")
         .header("Content-type", "application/json")
-            .timeout(Duration.ofSeconds(requestTimeoutSeconds))
+        .timeout(Duration.ofSeconds(requestTimeoutSeconds)).build();
-            .build();
     HttpClient client = HttpClient.newHttpClient();
-    HttpResponse<InputStream> response =
+    HttpResponse<InputStream> response = client.send(request,
-        client.send(request, HttpResponse.BodyHandlers.ofInputStream());
+        HttpResponse.BodyHandlers.ofInputStream());
     int statusCode = response.statusCode();
     InputStream responseBodyStream = response.body();
     String responseString = "";
-    try (BufferedReader reader =
+    try (BufferedReader reader = new BufferedReader(
-        new BufferedReader(new InputStreamReader(responseBodyStream, StandardCharsets.UTF_8))) {
+        new InputStreamReader(responseBodyStream, StandardCharsets.UTF_8))) {
       String line;
       while ((line = reader.readLine()) != null) {
-        ModelPullResponse modelPullResponse =
+        ModelPullResponse modelPullResponse = Utils.getObjectMapper()
-            Utils.getObjectMapper().readValue(line, ModelPullResponse.class);
+            .readValue(line, ModelPullResponse.class);
         if (verbose) {
           logger.info(modelPullResponse.getStatus());
         }
@@ -129,14 +132,10 @@ public class OllamaAPI {
       throws IOException, OllamaBaseException, InterruptedException {
     String url = this.host + "/api/show";
     String jsonData = String.format("{\"name\": \"%s\"}", modelName);
-    HttpRequest request =
+    HttpRequest request = HttpRequest.newBuilder().uri(URI.create(url))
-        HttpRequest.newBuilder()
+        .header("Accept", "application/json").header("Content-type", "application/json")
-            .uri(URI.create(url))
-            .header("Accept", "application/json")
-            .header("Content-type", "application/json")
         .timeout(Duration.ofSeconds(requestTimeoutSeconds))
-            .POST(HttpRequest.BodyPublishers.ofString(jsonData))
+        .POST(HttpRequest.BodyPublishers.ofString(jsonData)).build();
-            .build();
     HttpClient client = HttpClient.newHttpClient();
     HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
     int statusCode = response.statusCode();
@@ -158,16 +157,12 @@ public class OllamaAPI {
   public void createModel(String modelName, String modelFilePath)
       throws IOException, InterruptedException, OllamaBaseException {
     String url = this.host + "/api/create";
-    String jsonData =
+    String jsonData = String.format("{\"name\": \"%s\", \"path\": \"%s\"}", modelName,
-        String.format("{\"name\": \"%s\", \"path\": \"%s\"}", modelName, modelFilePath);
+        modelFilePath);
-    HttpRequest request =
+    HttpRequest request = HttpRequest.newBuilder().uri(URI.create(url))
-        HttpRequest.newBuilder()
+        .header("Accept", "application/json").header("Content-Type", "application/json")
-            .uri(URI.create(url))
-            .header("Accept", "application/json")
-            .header("Content-Type", "application/json")
         .timeout(Duration.ofSeconds(requestTimeoutSeconds))
-            .POST(HttpRequest.BodyPublishers.ofString(jsonData, StandardCharsets.UTF_8))
+        .POST(HttpRequest.BodyPublishers.ofString(jsonData, StandardCharsets.UTF_8)).build();
-            .build();
     HttpClient client = HttpClient.newHttpClient();
     HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
     int statusCode = response.statusCode();
@@ -196,14 +191,10 @@ public class OllamaAPI {
       throws IOException, InterruptedException, OllamaBaseException {
     String url = this.host + "/api/delete";
     String jsonData = String.format("{\"name\": \"%s\"}", name);
-    HttpRequest request =
+    HttpRequest request = HttpRequest.newBuilder().uri(URI.create(url))
-        HttpRequest.newBuilder()
-            .uri(URI.create(url))
         .method("DELETE", HttpRequest.BodyPublishers.ofString(jsonData, StandardCharsets.UTF_8))
-            .header("Accept", "application/json")
+        .header("Accept", "application/json").header("Content-type", "application/json")
-            .header("Content-type", "application/json")
+        .timeout(Duration.ofSeconds(requestTimeoutSeconds)).build();
-            .timeout(Duration.ofSeconds(requestTimeoutSeconds))
-            .build();
     HttpClient client = HttpClient.newHttpClient();
     HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
     int statusCode = response.statusCode();
@@ -228,20 +219,16 @@ public class OllamaAPI {
     String url = this.host + "/api/embeddings";
     String jsonData = String.format("{\"model\": \"%s\", \"prompt\": \"%s\"}", model, prompt);
     HttpClient httpClient = HttpClient.newHttpClient();
-    HttpRequest request =
+    HttpRequest request = HttpRequest.newBuilder().uri(URI.create(url))
-        HttpRequest.newBuilder()
+        .header("Accept", "application/json").header("Content-type", "application/json")
-            .uri(URI.create(url))
-            .header("Accept", "application/json")
-            .header("Content-type", "application/json")
         .timeout(Duration.ofSeconds(requestTimeoutSeconds))
-            .POST(HttpRequest.BodyPublishers.ofString(jsonData))
+        .POST(HttpRequest.BodyPublishers.ofString(jsonData)).build();
-            .build();
     HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
     int statusCode = response.statusCode();
     String responseBody = response.body();
     if (statusCode == 200) {
-      EmbeddingResponse embeddingResponse =
+      EmbeddingResponse embeddingResponse = Utils.getObjectMapper()
-          Utils.getObjectMapper().readValue(responseBody, EmbeddingResponse.class);
+          .readValue(responseBody, EmbeddingResponse.class);
       return embeddingResponse.getEmbedding();
     } else {
       throw new OllamaBaseException(statusCode + " - " + responseBody);
@@ -258,44 +245,65 @@ public class OllamaAPI {
   public OllamaResult ask(String model, String promptText)
       throws OllamaBaseException, IOException, InterruptedException {
     OllamaRequestModel ollamaRequestModel = new OllamaRequestModel(model, promptText);
-    long startTime = System.currentTimeMillis();
+    return askSync(ollamaRequestModel);
-    HttpClient httpClient = HttpClient.newHttpClient();
-    URI uri = URI.create(this.host + "/api/generate");
-    HttpRequest request =
-        HttpRequest.newBuilder(uri)
-            .POST(
-                HttpRequest.BodyPublishers.ofString(
-                    Utils.getObjectMapper().writeValueAsString(ollamaRequestModel)))
-            .header("Content-Type", "application/json")
-            .timeout(Duration.ofSeconds(requestTimeoutSeconds))
-            .build();
-    HttpResponse<InputStream> response =
-        httpClient.send(request, HttpResponse.BodyHandlers.ofInputStream());
-    int statusCode = response.statusCode();
-    InputStream responseBodyStream = response.body();
-    StringBuilder responseBuffer = new StringBuilder();
-    try (BufferedReader reader =
-        new BufferedReader(new InputStreamReader(responseBodyStream, StandardCharsets.UTF_8))) {
-      String line;
-      while ((line = reader.readLine()) != null) {
-        if (statusCode == 404) {
-          OllamaErrorResponseModel ollamaResponseModel =
-              Utils.getObjectMapper().readValue(line, OllamaErrorResponseModel.class);
-          responseBuffer.append(ollamaResponseModel.getError());
-        } else {
-          OllamaResponseModel ollamaResponseModel =
-              Utils.getObjectMapper().readValue(line, OllamaResponseModel.class);
-          if (!ollamaResponseModel.isDone()) {
-            responseBuffer.append(ollamaResponseModel.getResponse());
   }
+
+  /**
+   * With one or more image files, ask a question to a model running on Ollama server. This is a
+   * sync/blocking call.
+   *
+   * @param model      the ollama model to ask the question to
+   * @param promptText the prompt/question text
+   * @param imageFiles the list of image files to use for the question
+   * @return OllamaResult - that includes response text and time taken for response
+   */
+  public OllamaResult askWithImages(String model, String promptText, List<File> imageFiles)
+      throws OllamaBaseException, IOException, InterruptedException {
+    List<String> images = new ArrayList<>();
+    for (File imageFile : imageFiles) {
+      images.add(encodeFileToBase64(imageFile));
     }
+    OllamaRequestModel ollamaRequestModel = new OllamaRequestModel(model, promptText, images);
+    return askSync(ollamaRequestModel);
   }
+
+  /**
+   * With one or more image URLs, ask a question to a model running on Ollama server. This is a
+   * sync/blocking call.
+   *
+   * @param model      the ollama model to ask the question to
+   * @param promptText the prompt/question text
+   * @param imageURLs  the list of image URLs to use for the question
+   * @return OllamaResult - that includes response text and time taken for response
+   */
+  public OllamaResult askWithImageURLs(String model, String promptText, List<String> imageURLs)
+      throws OllamaBaseException, IOException, InterruptedException, URISyntaxException {
+    List<String> images = new ArrayList<>();
+    for (String imageURL : imageURLs) {
+      images.add(encodeByteArrayToBase64(loadImageBytesFromUrl(imageURL)));
     }
-    if (statusCode != 200) {
+    OllamaRequestModel ollamaRequestModel = new OllamaRequestModel(model, promptText, images);
-      throw new OllamaBaseException(responseBuffer.toString());
+    return askSync(ollamaRequestModel);
-    } else {
+  }
-      long endTime = System.currentTimeMillis();
+
-      return new OllamaResult(responseBuffer.toString().trim(), endTime - startTime, statusCode);
+  public static String encodeFileToBase64(File file) throws IOException {
+    return Base64.getEncoder().encodeToString(Files.readAllBytes(file.toPath()));
+  }
+
+  public static String encodeByteArrayToBase64(byte[] bytes) {
+    return Base64.getEncoder().encodeToString(bytes);
+  }
+
+  public static byte[] loadImageBytesFromUrl(String imageUrl)
+      throws IOException, URISyntaxException {
+    URL url = new URI(imageUrl).toURL();
+    try (InputStream in = url.openStream(); ByteArrayOutputStream out = new ByteArrayOutputStream()) {
+      byte[] buffer = new byte[1024];
+      int bytesRead;
+      while ((bytesRead = in.read(buffer)) != -1) {
+        out.write(buffer, 0, bytesRead);
+      }
+      return out.toByteArray();
     }
   }
 
@@ -312,9 +320,48 @@ public class OllamaAPI {
     OllamaRequestModel ollamaRequestModel = new OllamaRequestModel(model, promptText);
     HttpClient httpClient = HttpClient.newHttpClient();
     URI uri = URI.create(this.host + "/api/generate");
-    OllamaAsyncResultCallback ollamaAsyncResultCallback =
+    OllamaAsyncResultCallback ollamaAsyncResultCallback = new OllamaAsyncResultCallback(httpClient,
-        new OllamaAsyncResultCallback(httpClient, uri, ollamaRequestModel, requestTimeoutSeconds);
+        uri, ollamaRequestModel, requestTimeoutSeconds);
     ollamaAsyncResultCallback.start();
     return ollamaAsyncResultCallback;
   }
+
+  private OllamaResult askSync(OllamaRequestModel ollamaRequestModel)
+      throws OllamaBaseException, IOException, InterruptedException {
+    long startTime = System.currentTimeMillis();
+    HttpClient httpClient = HttpClient.newHttpClient();
+    URI uri = URI.create(this.host + "/api/generate");
+    HttpRequest request = HttpRequest.newBuilder(uri).POST(HttpRequest.BodyPublishers.ofString(
+            Utils.getObjectMapper().writeValueAsString(ollamaRequestModel)))
+        .header("Content-Type", "application/json")
+        .timeout(Duration.ofSeconds(requestTimeoutSeconds)).build();
+    HttpResponse<InputStream> response = httpClient.send(request,
+        HttpResponse.BodyHandlers.ofInputStream());
+    int statusCode = response.statusCode();
+    InputStream responseBodyStream = response.body();
+    StringBuilder responseBuffer = new StringBuilder();
+    try (BufferedReader reader = new BufferedReader(
+        new InputStreamReader(responseBodyStream, StandardCharsets.UTF_8))) {
+      String line;
+      while ((line = reader.readLine()) != null) {
+        if (statusCode == 404) {
+          OllamaErrorResponseModel ollamaResponseModel = Utils.getObjectMapper()
+              .readValue(line, OllamaErrorResponseModel.class);
+          responseBuffer.append(ollamaResponseModel.getError());
+        } else {
+          OllamaResponseModel ollamaResponseModel = Utils.getObjectMapper()
+              .readValue(line, OllamaResponseModel.class);
+          if (!ollamaResponseModel.isDone()) {
+            responseBuffer.append(ollamaResponseModel.getResponse());
+          }
+        }
+      }
+    }
+    if (statusCode != 200) {
+      throw new OllamaBaseException(responseBuffer.toString());
+    } else {
+      long endTime = System.currentTimeMillis();
+      return new OllamaResult(responseBuffer.toString().trim(), endTime - startTime, statusCode);
+    }
+  }
 }

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/OllamaRequestModel.java

@@ -1,15 +1,35 @@
 package io.github.amithkoujalgi.ollama4j.core.models;
 
 
+import static io.github.amithkoujalgi.ollama4j.core.utils.Utils.getObjectMapper;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import java.util.List;
 import lombok.Data;
 
 @Data
 public class OllamaRequestModel {
+
   private String model;
   private String prompt;
+  private List<String> images;
 
   public OllamaRequestModel(String model, String prompt) {
     this.model = model;
     this.prompt = prompt;
   }
+
+  public OllamaRequestModel(String model, String prompt, List<String> images) {
+    this.model = model;
+    this.prompt = prompt;
+    this.images = images;
+  }
+
+  public String toString() {
+    try {
+      return getObjectMapper().writerWithDefaultPrettyPrinter().writeValueAsString(this);
+    } catch (JsonProcessingException e) {
+      throw new RuntimeException(e);
+    }
+  }
 }