Fixes spring-projects#4270 Add documentation for the new Spring AI - Google GenAI integration modules

Signed-off-by: ddobrin <[email protected]>

Author: ddobrin

auto-configurations/models/spring-ai-autoconfigure-model-google-genai/MIGRATION_GUIDE.md

@@ -4,6 +4,30 @@
 
 This guide helps you migrate from the old Vertex AI-based autoconfiguration to the new Google GenAI SDK-based autoconfiguration.
 
+## Starter Dependencies
+
+Spring AI provides separate starters for Google GenAI functionality:
+
+### Chat Functionality
+```xml
+<dependency>
+    <groupId>org.springframework.ai</groupId>
+    <artifactId>spring-ai-starter-model-google-genai</artifactId>
+    <version>1.1.0-SNAPSHOT</version>
+</dependency>
+```
+
+### Embedding Functionality
+```xml
+<dependency>
+    <groupId>org.springframework.ai</groupId>
+    <artifactId>spring-ai-starter-model-google-genai-embedding</artifactId>
+    <version>1.1.0-SNAPSHOT</version>
+</dependency>
+```
+
+**Note**: If you need both chat and embedding capabilities, include both starters in your project. The starters are designed to be used independently or together based on your requirements.
+
 ## Key Changes
 
 ### 1. Property Namespace Changes

auto-configurations/models/spring-ai-autoconfigure-model-google-genai/src/main/java/org/springframework/ai/model/google/genai/autoconfigure/embedding/GoogleGenAiEmbeddingConnectionAutoConfiguration.java

@@ -39,7 +39,7 @@
  * @since 1.1.0
  */
 @AutoConfiguration
-@ConditionalOnClass(Client.class)
+@ConditionalOnClass({ Client.class, GoogleGenAiEmbeddingConnectionDetails.class })
 @EnableConfigurationProperties(GoogleGenAiEmbeddingConnectionProperties.class)
 public class GoogleGenAiEmbeddingConnectionAutoConfiguration {
 

models/spring-ai-google-genai-embedding/README.md

@@ -1,5 +1,39 @@
-# Google Gen AI Embeddings module
+# Google GenAI Embeddings Module
 
-Please note that at this time the *spring-ai-google-genai-embedding* module supports only text embeddings only.
+[Google GenAI Text Embeddings Documentation](https://docs.spring.io/spring-ai/reference/api/embeddings/google-genai-embeddings-text.html)
 
-This is due to the fact that the Google GenAI SDK supports text embeddings only, with multimedia embeddings pending. 
+## Overview
+
+The Google GenAI Embeddings module provides text embedding generation using Google's embedding models through either the Gemini Developer API or Vertex AI.
+
+## Current Support
+
+Please note that at this time the *spring-ai-google-genai-embedding* module supports **text embeddings only**.
+
+This is due to the fact that the Google GenAI SDK currently supports text embeddings only, with multimodal embeddings support pending.
+
+## Starter Dependency
+
+```xml
+<dependency>
+    <groupId>org.springframework.ai</groupId>
+    <artifactId>spring-ai-starter-model-google-genai-embedding</artifactId>
+</dependency>
+```
+
+## Manual Configuration
+
+```xml
+<dependency>
+    <groupId>org.springframework.ai</groupId>
+    <artifactId>spring-ai-google-genai-embedding</artifactId>
+</dependency>
+```
+
+## Authentication Modes
+
+The module supports two authentication modes:
+- **Gemini Developer API**: Use an API key for quick prototyping
+- **Vertex AI**: Use Google Cloud credentials for production deployments
+
+See the [documentation](https://docs.spring.io/spring-ai/reference/api/embeddings/google-genai-embeddings-text.html) for detailed configuration instructions. 

models/spring-ai-google-genai/README.md

@@ -1,10 +1,10 @@
-[VertexAI Gemini Chat](https://docs.spring.io/spring-ai/reference/api/chat/vertexai-gemini-chat.html)
+[Google GenAI Chat](https://docs.spring.io/spring-ai/reference/api/chat/google-genai-chat.html)
 
-### Starter - WIP
+### Starter
 ```xml
 <dependency>
     <groupId>org.springframework.ai</groupId>
-    <artifactId>spring-ai-starter-model-spring-ai-google-genai</artifactId>
+    <artifactId>spring-ai-starter-model-google-genai</artifactId>
 </dependency>
 ```
 

spring-ai-docs/src/main/antora/modules/ROOT/nav.adoc

@@ -18,8 +18,10 @@
 **** xref:api/chat/azure-openai-chat.adoc[Azure OpenAI]
 **** xref:api/chat/deepseek-chat.adoc[DeepSeek]
 **** xref:api/chat/dmr-chat.adoc[Docker Model Runner]
-**** xref:api/chat/google-vertexai.adoc[Google VertexAI]
-***** xref:api/chat/vertexai-gemini-chat.adoc[VertexAI Gemini]
+**** Google
+***** xref:api/chat/google-genai-chat.adoc[Google GenAI]
+***** xref:api/chat/google-vertexai.adoc[Google VertexAI]
+****** xref:api/chat/vertexai-gemini-chat.adoc[VertexAI Gemini]
 **** xref:api/chat/groq-chat.adoc[Groq]
 **** xref:api/chat/huggingface.adoc[Hugging Face]
 **** xref:api/chat/mistralai-chat.adoc[Mistral AI]
@@ -39,6 +41,8 @@
 ***** xref:api/embeddings/bedrock-cohere-embedding.adoc[Cohere]
 ***** xref:api/embeddings/bedrock-titan-embedding.adoc[Titan]
 **** xref:api/embeddings/azure-openai-embeddings.adoc[Azure OpenAI]
+**** Google
+***** xref:api/embeddings/google-genai-embeddings-text.adoc[Google GenAI Text Embedding]
 **** xref:api/embeddings/mistralai-embeddings.adoc[Mistral AI]
 **** xref:api/embeddings/minimax-embeddings.adoc[MiniMax]
 **** xref:api/embeddings/oci-genai-embeddings.adoc[OCI GenAI]

spring-ai-docs/src/main/antora/modules/ROOT/pages/api/chat/comparison.adoc

@@ -22,6 +22,7 @@ This table compares various Chat Models supported by Spring AI, detailing their
 | xref::api/chat/anthropic-chat.adoc[Anthropic Claude]  | text, pdf, image ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::no.svg[width=12] ^a| image::no.svg[width=12] ^a| image::no.svg[width=12]
 | xref::api/chat/azure-openai-chat.adoc[Azure OpenAI]  | text, image ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::no.svg[width=12] ^a| image::yes.svg[width=16]
 | xref::api/chat/deepseek-chat.adoc[DeepSeek (OpenAI-proxy)]  | text ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16]
+| xref::api/chat/google-genai-chat.adoc[Google GenAI]  | text, pdf, image, audio, video ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::no.svg[width=12] ^a| image::no.svg[width=12]
 | xref::api/chat/vertexai-gemini-chat.adoc[Google VertexAI Gemini]  | text, pdf, image, audio, video ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::no.svg[width=12] ^a| image::yes.svg[width=16]
 | xref::api/chat/groq-chat.adoc[Groq (OpenAI-proxy)]  | text, image ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::yes.svg[width=16] ^a| image::no.svg[width=12] ^a| image::no.svg[width=12] ^a| image::yes.svg[width=16]
 | xref::api/chat/huggingface.adoc[HuggingFace]  | text ^a| image::no.svg[width=12] ^a| image::no.svg[width=12] ^a| image::no.svg[width=12] ^a| image::no.svg[width=12] ^a| image::no.svg[width=12] ^a| image::no.svg[width=12] ^a| image::no.svg[width=12]