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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,174 @@ | ||
| // Copyright 2020 PingCAP, Inc. | ||
| // | ||
| // 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, | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package queryeditor | ||
|
|
||
| import ( | ||
| "context" | ||
| "database/sql" | ||
| "net/http" | ||
| "time" | ||
|
|
||
| "github.com/gin-gonic/gin" | ||
| "github.com/pingcap/log" | ||
| "go.uber.org/fx" | ||
| "go.uber.org/zap" | ||
|
|
||
| "github.com/pingcap-incubator/tidb-dashboard/pkg/apiserver/user" | ||
| "github.com/pingcap-incubator/tidb-dashboard/pkg/apiserver/utils" | ||
| "github.com/pingcap-incubator/tidb-dashboard/pkg/config" | ||
| "github.com/pingcap-incubator/tidb-dashboard/pkg/tidb" | ||
| ) | ||
|
|
||
| type Service struct { | ||
| lifecycleCtx context.Context | ||
|
|
||
| config *config.Config | ||
| tidbForwarder *tidb.Forwarder | ||
| } | ||
|
|
||
| func NewService(lc fx.Lifecycle, config *config.Config, tidbForwarder *tidb.Forwarder) *Service { | ||
| service := &Service{config: config, tidbForwarder: tidbForwarder} | ||
| lc.Append(fx.Hook{ | ||
| OnStart: func(ctx context.Context) error { | ||
| service.lifecycleCtx = ctx | ||
| return nil | ||
| }, | ||
| }) | ||
|
|
||
| return service | ||
| } | ||
|
|
||
| func Register(r *gin.RouterGroup, auth *user.AuthService, s *Service) { | ||
| endpoint := r.Group("/query_editor") | ||
| endpoint.Use(auth.MWAuthRequired()) | ||
| endpoint.Use(utils.MWConnectTiDB(s.tidbForwarder)) | ||
| endpoint.POST("/run", s.runHandler) | ||
| } | ||
|
|
||
| type RunRequest struct { | ||
| Statements string `json:"statements" example:"show databases;"` | ||
| MaxRows int `json:"max_rows" example:"1000"` | ||
| } | ||
|
|
||
| type RunResponse struct { | ||
| ErrorMsg string `json:"error_msg"` | ||
| ColumnNames []string `json:"column_names"` | ||
| Rows [][]interface{} `json:"rows"` | ||
| ExecutionMs int64 `json:"execution_ms"` | ||
| ActualRows int `json:"actual_rows"` | ||
| } | ||
|
|
||
| func executeStatements(context context.Context, db *sql.DB, statements string) ([]string, [][]interface{}, error) { | ||
| rows, err := db.QueryContext(context, statements) | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
|
|
||
| defer rows.Close() | ||
|
|
||
| colNames, err := rows.Columns() | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
|
|
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| retRows := make([][]interface{}, 0) | ||
|
|
||
| values := make([]sql.RawBytes, len(colNames)) | ||
| scanArgs := make([]interface{}, len(values)) | ||
| for i := range values { | ||
| scanArgs[i] = &values[i] | ||
| } | ||
|
|
||
| for rows.Next() { | ||
| err = rows.Scan(scanArgs...) | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
|
|
||
| retRow := make([]interface{}, 0, len(values)) | ||
| var value interface{} | ||
| for _, col := range values { | ||
| if col == nil { | ||
| value = nil | ||
| } else { | ||
| value = string(col) | ||
| } | ||
| retRow = append(retRow, value) | ||
| } | ||
| retRows = append(retRows, retRow) | ||
| } | ||
|
|
||
| if err = rows.Err(); err != nil { | ||
| return nil, nil, err | ||
| } | ||
|
|
||
| return colNames, retRows, nil | ||
| } | ||
|
|
||
| // @ID queryEditorRun | ||
| // @Summary Run | ||
| // @Description Run statements | ||
| // @Produce json | ||
| // @Param request body RunRequest true "Request body" | ||
| // @Success 200 {object} RunResponse | ||
| // @Router /query_editor/run [post] | ||
| // @Security JwtAuth | ||
| // @Failure 400 {object} utils.APIError "Bad request" | ||
| // @Failure 401 {object} utils.APIError "Unauthorized failure" | ||
| // @Failure 403 {object} utils.APIError "Experimental feature not enabled" | ||
| func (s *Service) runHandler(c *gin.Context) { | ||
| if !s.config.EnableExperimental { | ||
| c.Status(http.StatusForbidden) | ||
| _ = c.Error(utils.ErrExpNotEnabled.NewWithNoMessage()) | ||
| return | ||
| } | ||
|
|
||
| var req RunRequest | ||
| if err := c.ShouldBindJSON(&req); err != nil { | ||
| c.Status(http.StatusBadRequest) | ||
| _ = c.Error(utils.ErrInvalidRequest.WrapWithNoMessage(err)) | ||
| return | ||
| } | ||
|
|
||
| ctx, cancel := context.WithTimeout(s.lifecycleCtx, time.Minute*5) | ||
| defer cancel() | ||
|
|
||
| startTime := time.Now() | ||
| colNames, rows, err := executeStatements(ctx, utils.GetTiDBConnection(c).DB(), req.Statements) | ||
| elapsedTime := time.Since(startTime) | ||
|
|
||
| if err != nil { | ||
| log.Warn("Failed to execute user input statements", zap.String("statements", req.Statements), zap.Error(err)) | ||
| c.JSON(http.StatusOK, RunResponse{ | ||
| ErrorMsg: err.Error(), | ||
| ColumnNames: nil, | ||
| Rows: nil, | ||
| ExecutionMs: elapsedTime.Milliseconds(), | ||
| ActualRows: 0, | ||
| }) | ||
| return | ||
| } | ||
|
|
||
| truncatedRows := rows | ||
| if len(truncatedRows) > req.MaxRows { | ||
| truncatedRows = truncatedRows[:req.MaxRows] | ||
| } | ||
|
|
||
| c.JSON(http.StatusOK, RunResponse{ | ||
| ColumnNames: colNames, | ||
| Rows: truncatedRows, | ||
| ExecutionMs: elapsedTime.Milliseconds(), | ||
| ActualRows: len(rows), | ||
| }) | ||
| } |
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