feat: intergrate gemini embedding (#783)

backend/infra/impl/embedding/wrap/gemini.go

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package wrap
+
+import (
+	"context"
+
+	"github.com/cloudwego/eino-ext/components/embedding/gemini"
+
+	contract "github.com/coze-dev/coze-studio/backend/infra/contract/embedding"
+)
+
+func NewGeminiEmbedder(ctx context.Context, config *gemini.EmbeddingConfig, dimensions int64, batchSize int) (contract.Embedder, error) {
+	emb, err := gemini.NewEmbedder(ctx, config)
+	if err != nil {
+		return nil, err
+	}
+	return &denseOnlyWrap{dims: dimensions, batchSize: batchSize, Embedder: emb}, nil
+}