mirror of
https://gitee.com/dromara/mayfly-go
synced 2026-05-19 09:25:19 +08:00
50 lines
1.6 KiB
Go
50 lines
1.6 KiB
Go
package tools
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import (
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"context"
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"mayfly-go/internal/db/application"
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"mayfly-go/internal/db/dbm/dbi"
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"github.com/cloudwego/eino/components/tool"
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"github.com/cloudwego/eino/components/tool/utils"
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)
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type QueryDataParam struct {
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DbId uint64 `json:"dbId" jsonschema_description:"数据库ID"`
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DbName string `json:"dbName" jsonschema_description:"数据库名称"`
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SQL string `json:"sql" jsonschema_description:"SQL语句"`
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}
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type QueryDataOutput struct {
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Columns []*dbi.QueryColumn `json:"columns" jsonschema_description:"查询结果列信息"`
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Rows []map[string]any `json:"rows" jsonschema_description:"查询结果数据"`
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}
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func GetQueryData() (tool.InvokableTool, error) {
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return utils.InferTool("DbQueryData",
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"【数据库】SQL查询 - 执行只读类 SQL 语句（如 SELECT、SHOW、DESC、EXPLAIN 等）。适用于查询表数据、分析执行计划等场景。注意：仅限查询操作，禁止执行 INSERT、UPDATE、DELETE 等变更类 SQL。",
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func(ctx context.Context, param *QueryDataParam) (*QueryDataOutput, error) {
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conn, err := application.GetDbApp().GetDbConn(ctx, param.DbId, param.DbName)
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if err != nil {
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return nil, err
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}
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rows := make([]map[string]any, 0)
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columns, err := conn.WalkQueryRows(ctx, param.SQL, func(row map[string]any, columns []*dbi.QueryColumn) error {
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rows = append(rows, row)
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if len(rows) > 1000 {
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return dbi.NewStopWalkQueryError("The maximum number of query rows is exceeded: 1000")
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}
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return nil
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})
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if err != nil {
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return nil, err
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}
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output := &QueryDataOutput{Columns: columns, Rows: rows}
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return output, nil
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},
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)
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}
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