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| package com.gitrebase.rag.ai.gemini; | |
| import io.micrometer.observation.ObservationRegistry; | |
| import org.slf4j.Logger; | |
| import org.slf4j.LoggerFactory; | |
| import org.springframework.ai.document.Document; | |
| import org.springframework.ai.document.MetadataMode; | |
| import org.springframework.ai.embedding.*; | |
| import org.springframework.ai.embedding.observation.DefaultEmbeddingModelObservationConvention; | |
| import org.springframework.ai.embedding.observation.EmbeddingModelObservationContext; | |
| import org.springframework.ai.embedding.observation.EmbeddingModelObservationConvention; | |
| import org.springframework.ai.embedding.observation.EmbeddingModelObservationDocumentation; | |
| import org.springframework.ai.retry.RetryUtils; | |
| import org.springframework.retry.support.RetryTemplate; | |
| import org.springframework.util.Assert; | |
| import java.util.List; | |
| import static com.gitrebase.rag.ai.gemini.GeminiApiConstants.*; | |
| public class GeminiEmbeddingModel extends AbstractEmbeddingModel { | |
| // Logger | |
| private static final Logger logger = LoggerFactory.getLogger(GeminiEmbeddingModel.class); | |
| // Observability | |
| private static final EmbeddingModelObservationConvention DEFAULT_OBSERVATION_CONVENTION = new DefaultEmbeddingModelObservationConvention(); | |
| // Retry Template | |
| private final RetryTemplate retryTemplate; | |
| // Observability | |
| private final ObservationRegistry observationRegistry; | |
| // API - Class that wraps API | |
| private final GeminiApi geminiApi; | |
| private EmbeddingModelObservationConvention observationConvention; | |
| public GeminiEmbeddingModel(GeminiApiConfig config) { | |
| this.retryTemplate = RetryUtils.DEFAULT_RETRY_TEMPLATE; | |
| this.observationRegistry = ObservationRegistry.NOOP; | |
| this.geminiApi = new GeminiApi(config); | |
| } | |
| @Override | |
| public EmbeddingResponse call(EmbeddingRequest request) { | |
| EmbeddingOptions embeddingOptions = EmbeddingOptionsBuilder.builder() | |
| .withModel(TEXT_EMBEDDING_MODEL) | |
| .withDimensions(TEXT_EMBEDDING_MODEL_DIMENSIONS) | |
| .build(); | |
| EmbeddingModelObservationContext observationContext = EmbeddingModelObservationContext.builder() | |
| .embeddingRequest(request) | |
| .provider(GEMINI_PROVIDER) | |
| .requestOptions(embeddingOptions).build(); | |
| var input = request.getInstructions(); | |
| var rqx = new GeminiApi.GeminiEmbeddingRequest(input); | |
| return EmbeddingModelObservationDocumentation.EMBEDDING_MODEL_OPERATION | |
| .observation( | |
| this.observationConvention, | |
| DEFAULT_OBSERVATION_CONVENTION, | |
| () -> observationContext, this.observationRegistry | |
| ).observe(() -> { | |
| var apiEmbeddingResponse = this.retryTemplate.execute((ctx) -> this.geminiApi.embeddings(rqx).getBody()); | |
| if (apiEmbeddingResponse == null) { | |
| logger.warn("No embeddings returned for request: {}", request); | |
| return new EmbeddingResponse(List.of()); | |
| } else { | |
| Embedding embedding = new Embedding(apiEmbeddingResponse.getEmbedding().values, 0); | |
| EmbeddingResponse embeddingResponse = new EmbeddingResponse(List.of(embedding)); | |
| observationContext.setResponse(embeddingResponse); | |
| return embeddingResponse; | |
| } | |
| }); | |
| } | |
| @Override | |
| public float[] embed(Document document) { | |
| Assert.notNull(document, "Document must not be null"); | |
| return this.embed(document.getFormattedContent(MetadataMode.EMBED)); | |
| } | |
| } |
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