Merge pull request #3 from langchain4j/ollama_starter

added Ollama starter

langchain4j-ollama-spring-boot-starter/pom.xml

@@ -0,0 +1,80 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>dev.langchain4j</groupId>
+        <artifactId>langchain4j-spring</artifactId>
+        <version>0.26.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>langchain4j-ollama-spring-boot-starter</artifactId>
+    <name>LangChain4j Spring Boot starter for Ollama</name>
+    <packaging>jar</packaging>
+
+    <dependencies>
+
+        <dependency>
+            <groupId>dev.langchain4j</groupId>
+            <artifactId>langchain4j-ollama</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-autoconfigure-processor</artifactId>
+            <optional>true</optional>
+        </dependency>
+
+        <!-- should be listed before spring-boot-configuration-processor -->
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <scope>provided</scope>
+        </dependency>
+
+        <!-- needed to generate automatic metadata about available config properties -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-configuration-processor</artifactId>
+            <optional>true</optional>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.testcontainers</groupId>
+            <artifactId>testcontainers</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.testcontainers</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+    </dependencies>
+
+    <licenses>
+        <license>
+            <name>Apache-2.0</name>
+            <url>https://www.apache.org/licenses/LICENSE-2.0.txt</url>
+            <distribution>repo</distribution>
+            <comments>A business-friendly OSS license</comments>
+        </license>
+    </licenses>
+
+</project>

langchain4j-ollama-spring-boot-starter/src/main/java/dev/langchain4j/ollama/spring/AutoConfig.java

@@ -0,0 +1,104 @@
+package dev.langchain4j.ollama.spring;
+
+import dev.langchain4j.model.ollama.*;
+import org.springframework.boot.autoconfigure.AutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+
+import static dev.langchain4j.ollama.spring.Properties.PREFIX;
+
+@AutoConfiguration
+@EnableConfigurationProperties(Properties.class)
+public class AutoConfig {
+
+    @Bean
+    @ConditionalOnProperty(PREFIX + ".chat-model.base-url")
+    OllamaChatModel ollamaChatModel(Properties properties) {
+        ChatModelProperties chatModelProperties = properties.getChatModel();
+        return OllamaChatModel.builder()
+                .baseUrl(chatModelProperties.getBaseUrl())
+                .modelName(chatModelProperties.getModelName())
+                .temperature(chatModelProperties.getTemperature())
+                .topK(chatModelProperties.getTopK())
+                .topP(chatModelProperties.getTopP())
+                .repeatPenalty(chatModelProperties.getRepeatPenalty())
+                .seed(chatModelProperties.getSeed())
+                .numPredict(chatModelProperties.getNumPredict())
+                .stop(chatModelProperties.getStop())
+                .format(chatModelProperties.getFormat())
+                .timeout(chatModelProperties.getTimeout())
+                .maxRetries(chatModelProperties.getMaxRetries())
+                .build();
+    }
+
+    @Bean
+    @ConditionalOnProperty(PREFIX + ".streaming-chat-model.base-url")
+    OllamaStreamingChatModel ollamaStreamingChatModel(Properties properties) {
+        ChatModelProperties chatModelProperties = properties.getStreamingChatModel();
+        return OllamaStreamingChatModel.builder()
+                .baseUrl(chatModelProperties.getBaseUrl())
+                .modelName(chatModelProperties.getModelName())
+                .temperature(chatModelProperties.getTemperature())
+                .topK(chatModelProperties.getTopK())
+                .topP(chatModelProperties.getTopP())
+                .repeatPenalty(chatModelProperties.getRepeatPenalty())
+                .seed(chatModelProperties.getSeed())
+                .numPredict(chatModelProperties.getNumPredict())
+                .stop(chatModelProperties.getStop())
+                .format(chatModelProperties.getFormat())
+                .timeout(chatModelProperties.getTimeout())
+                .build();
+    }
+
+    @Bean
+    @ConditionalOnProperty(PREFIX + ".language-model.base-url")
+    OllamaLanguageModel ollamaLanguageModel(Properties properties) {
+        LanguageModelProperties languageModelProperties = properties.getLanguageModel();
+        return OllamaLanguageModel.builder()
+                .baseUrl(languageModelProperties.getBaseUrl())
+                .modelName(languageModelProperties.getModelName())
+                .temperature(languageModelProperties.getTemperature())
+                .topK(languageModelProperties.getTopK())
+                .topP(languageModelProperties.getTopP())
+                .repeatPenalty(languageModelProperties.getRepeatPenalty())
+                .seed(languageModelProperties.getSeed())
+                .numPredict(languageModelProperties.getNumPredict())
+                .stop(languageModelProperties.getStop())
+                .format(languageModelProperties.getFormat())
+                .timeout(languageModelProperties.getTimeout())
+                .maxRetries(languageModelProperties.getMaxRetries())
+                .build();
+    }
+
+    @Bean
+    @ConditionalOnProperty(PREFIX + ".streaming-language-model.base-url")
+    OllamaStreamingLanguageModel ollamaStreamingLanguageModel(Properties properties) {
+        LanguageModelProperties languageModelProperties = properties.getStreamingLanguageModel();
+        return OllamaStreamingLanguageModel.builder()
+                .baseUrl(languageModelProperties.getBaseUrl())
+                .modelName(languageModelProperties.getModelName())
+                .temperature(languageModelProperties.getTemperature())
+                .topK(languageModelProperties.getTopK())
+                .topP(languageModelProperties.getTopP())
+                .repeatPenalty(languageModelProperties.getRepeatPenalty())
+                .seed(languageModelProperties.getSeed())
+                .numPredict(languageModelProperties.getNumPredict())
+                .stop(languageModelProperties.getStop())
+                .format(languageModelProperties.getFormat())
+                .timeout(languageModelProperties.getTimeout())
+                .build();
+    }
+
+    @Bean
+    @ConditionalOnProperty(PREFIX + ".embedding-model.base-url")
+    OllamaEmbeddingModel ollamaEmbeddingModel(Properties properties) {
+        EmbeddingModelProperties embeddingModelProperties = properties.getEmbeddingModel();
+        return OllamaEmbeddingModel.builder()
+                .baseUrl(embeddingModelProperties.getBaseUrl())
+                .modelName(embeddingModelProperties.getModelName())
+                .timeout(embeddingModelProperties.getTimeout())
+                .maxRetries(embeddingModelProperties.getMaxRetries())
+                .build();
+    }
+}

langchain4j-ollama-spring-boot-starter/src/main/java/dev/langchain4j/ollama/spring/ChatModelProperties.java

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+package dev.langchain4j.ollama.spring;
+
+import lombok.Getter;
+import lombok.Setter;
+
+import java.time.Duration;
+import java.util.List;
+
+@Getter
+@Setter
+class ChatModelProperties {
+
+    String baseUrl;
+    String modelName;
+    Double temperature;
+    Integer topK;
+    Double topP;
+    Double repeatPenalty;
+    Integer seed;
+    Integer numPredict;
+    List<String> stop;
+    String format;
+    Duration timeout;
+    Integer maxRetries;
+}

langchain4j-ollama-spring-boot-starter/src/main/java/dev/langchain4j/ollama/spring/EmbeddingModelProperties.java

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+package dev.langchain4j.ollama.spring;
+
+import lombok.Getter;
+import lombok.Setter;
+
+import java.time.Duration;
+
+@Getter
+@Setter
+class EmbeddingModelProperties {
+
+    String baseUrl;
+    String modelName;
+    Duration timeout;
+    Integer maxRetries;
+}

langchain4j-ollama-spring-boot-starter/src/main/java/dev/langchain4j/ollama/spring/LanguageModelProperties.java

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+package dev.langchain4j.ollama.spring;
+
+import lombok.Getter;
+import lombok.Setter;
+
+import java.time.Duration;
+import java.util.List;
+
+@Getter
+@Setter
+class LanguageModelProperties {
+
+    String baseUrl;
+    String modelName;
+    Double temperature;
+    Integer topK;
+    Double topP;
+    Double repeatPenalty;
+    Integer seed;
+    Integer numPredict;
+    List<String> stop;
+    String format;
+    Duration timeout;
+    Integer maxRetries;
+}

langchain4j-ollama-spring-boot-starter/src/main/java/dev/langchain4j/ollama/spring/Properties.java

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+package dev.langchain4j.ollama.spring;
+
+import lombok.Getter;
+import lombok.Setter;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.NestedConfigurationProperty;
+
+@Getter
+@Setter
+@ConfigurationProperties(prefix = Properties.PREFIX)
+public class Properties {
+
+    static final String PREFIX = "langchain4j.ollama";
+
+    @NestedConfigurationProperty
+    ChatModelProperties chatModel;
+
+    @NestedConfigurationProperty
+    ChatModelProperties streamingChatModel;
+
+    @NestedConfigurationProperty
+    LanguageModelProperties languageModel;
+
+    @NestedConfigurationProperty
+    LanguageModelProperties streamingLanguageModel;
+
+    @NestedConfigurationProperty
+    EmbeddingModelProperties embeddingModel;
+}

langchain4j-ollama-spring-boot-starter/src/main/resources/META-INF/spring.factories

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+org.springframework.boot.autoconfigure.EnableAutoConfiguration=dev.langchain4j.ollama.spring.AutoConfig

langchain4j-ollama-spring-boot-starter/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports

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+dev.langchain4j.ollama.spring.AutoConfig