106 lines
3.0 KiB
Go
106 lines
3.0 KiB
Go
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package llm
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import (
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"encoding/json"
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"fmt"
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"knowledge-graph-backend/internal/model"
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"github.com/tmc/langchaingo/llms"
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)
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type KnowledgeGraphToolService interface {
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SearchNodes(query string) []model.Node
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GetNeighbors(nodeID string) (model.NeighborResponse, bool)
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GetNodeByID(id string) (model.Node, bool)
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CreateNode(req model.CreateNodeRequest) (model.Node, error)
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CreateEdge(req model.CreateEdgeRequest) (model.Edge, error)
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DeleteNode(id string) error
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DeleteEdge(id string) error
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}
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type ToolExecutor struct {
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graphSvc KnowledgeGraphToolService
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}
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func NewToolExecutor(graphSvc KnowledgeGraphToolService) *ToolExecutor {
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return &ToolExecutor{graphSvc: graphSvc}
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}
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func (e *ToolExecutor) Execute(toolCall llms.ToolCall) (string, error) {
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var result any
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var err error
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switch toolCall.FunctionCall.Name {
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case "search_nodes":
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var args struct {
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Query string `json:"query"`
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}
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if err := json.Unmarshal([]byte(toolCall.FunctionCall.Arguments), &args); err != nil {
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return "", fmt.Errorf("invalid arguments for search_nodes: %w", err)
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}
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result = e.graphSvc.SearchNodes(args.Query)
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case "get_neighbors":
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var args struct {
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NodeID string `json:"node_id"`
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}
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if err := json.Unmarshal([]byte(toolCall.FunctionCall.Arguments), &args); err != nil {
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return "", fmt.Errorf("invalid arguments for get_neighbors: %w", err)
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}
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result, _ = e.graphSvc.GetNeighbors(args.NodeID)
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case "create_node":
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var args model.CreateNodeRequest
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if err := json.Unmarshal([]byte(toolCall.FunctionCall.Arguments), &args); err != nil {
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return "", fmt.Errorf("invalid arguments for create_node: %w", err)
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}
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result, err = e.graphSvc.CreateNode(args)
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if err != nil {
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return "", err
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}
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case "create_edge":
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var args model.CreateEdgeRequest
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if err := json.Unmarshal([]byte(toolCall.FunctionCall.Arguments), &args); err != nil {
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return "", fmt.Errorf("invalid arguments for create_edge: %w", err)
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}
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result, err = e.graphSvc.CreateEdge(args)
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if err != nil {
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return "", err
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}
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case "delete_node":
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var args struct {
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ID string `json:"id"`
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}
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if err := json.Unmarshal([]byte(toolCall.FunctionCall.Arguments), &args); err != nil {
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return "", fmt.Errorf("invalid arguments for delete_node: %w", err)
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}
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err = e.graphSvc.DeleteNode(args.ID)
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if err != nil {
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return "", err
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}
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result = map[string]string{"status": "success", "message": fmt.Sprintf("Node %s deleted successfully", args.ID)}
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case "delete_edge":
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var args struct {
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ID string `json:"id"`
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}
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if err := json.Unmarshal([]byte(toolCall.FunctionCall.Arguments), &args); err != nil {
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return "", fmt.Errorf("invalid arguments for delete_edge: %w", err)
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}
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err = e.graphSvc.DeleteEdge(args.ID)
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if err != nil {
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return "", err
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}
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result = map[string]string{"status": "success", "message": fmt.Sprintf("Edge %s deleted successfully", args.ID)}
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default:
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return "", fmt.Errorf("unknown tool: %s", toolCall.FunctionCall.Name)
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}
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resBytes, _ := json.Marshal(result)
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return string(resBytes), nil
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}
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