RAGEmbedding singleton mode issue

[kangfenmao]

🐛 Describe the bug

export class RAGEmbedding {
    static singleton;
    static async init(embeddingModel) {
        if (!this.singleton) {
            await embeddingModel.init();
            this.singleton = new RAGEmbedding(embeddingModel);
        }
    }
    static getInstance() {
        return RAGEmbedding.singleton;
    }
    static getEmbedding() {
        return RAGEmbedding.getInstance().embedding;
    }
    static translateChunks(chunks) {
        return chunks.map((chunk) => {
            return {
                pageContent: chunk.pageContent,
                metadata: chunk.metadata,
            };
        });
    }
    embedding;
    constructor(embeddingModel) {
        this.embedding = embeddingModel;
    }
}
//# sourceMappingURL=rag-embedding.js.map

The singleton pattern can cause problems when using multiple APIs

API1: openai
API2: ollama

First embedding text with ollama, then, embedding will always use ollama, never use openai