/* * Copyright (C) 2017-2018 "IoT.bzh" * Author Sebastien Douheret * * 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 agent import ( "net/http" "gerrit.automotivelinux.org/gerrit/src/xds/xds-agent/lib/xaapiv1" common "gerrit.automotivelinux.org/gerrit/src/xds/xds-common.git/golib" "gerrit.automotivelinux.org/gerrit/src/xds/xds-server.git/lib/xsapiv1" "github.com/franciscocpg/reflectme" "github.com/gin-gonic/gin" uuid "github.com/satori/go.uuid" ) // ExecCmd executes remotely a command func (s *APIService) execCmd(c *gin.Context) { args := xaapiv1.ExecArgs{} if err := c.BindJSON(&args); err != nil { s.Log.Warningf("/exec invalid args, err=%v", err) common.APIError(c, "Invalid arguments") return } // First get Project ID to retrieve Server ID and send command to right server iid := c.Param("id") if iid == "" { iid = args.ID } id, err := s.projects.ResolveID(iid) if err != nil { common.APIError(c, err.Error()) return } prj := s.projects.Get(id) if prj == nil { common.APIError(c, "Unknown id") return } svr := (*prj).GetServer() if svr == nil { common.APIError(c, "Cannot identify XDS Server") return } // Retrieve session info sess := s.sessions.Get(c) if sess == nil { common.APIError(c, "Unknown sessions") return } sock := sess.IOSocket if sock == nil { common.APIError(c, "Websocket not established") return } // Forward input events from client to XDSServer through WS // TODO use XDSServer events names definition evtInList := []string{ xaapiv1.ExecInEvent, xaapiv1.ExecInferiorInEvent, } for _, evName := range evtInList { evN := evName err := (*sock).On(evN, func(stdin string) { s.LogSillyf("EXEC EVENT IN (%s) <<%v>>", evN, stdin) svr.EventEmit(evN, stdin) }) if err != nil { msgErr := "Error while registering WS for " + evN + " event" s.Log.Errorf(msgErr, ", err: %v", err) common.APIError(c, msgErr) return } } // Forward output events from XDSServer to client through WS // TODO use XDSServer events names definition var fwdFuncID []uuid.UUID evtOutList := []string{ xaapiv1.ExecOutEvent, xaapiv1.ExecInferiorOutEvent, } for _, evName := range evtOutList { evN := evName fwdFunc := func(pData interface{}, evData interface{}) error { sid := pData.(string) // IO socket can be nil when disconnected so := s.sessions.IOSocketGet(sid) if so == nil { s.Log.Infof("%s not emitted: WS closed (sid:%s)", evN, sid) return nil } // Add sessionID to event Data reflectme.SetField(evData, "sessionID", sid) s.LogSillyf("EXEC EVENT OUT (%s) <<%v>>", evN, evData) // Forward event to Client/Dashboard (*so).Emit(evN, evData) return nil } id, err := svr.EventOn(evN, sess.ID, fwdFunc) if err != nil { common.APIError(c, err.Error()) return } fwdFuncID = append(fwdFuncID, id) } // Handle Exit event separately to cleanup registered listener var exitFuncID uuid.UUID exitFunc := func(privD interface{}, evData interface{}) error { evN := xaapiv1.ExecExitEvent pData := privD.(map[string]string) sid := pData["sessID"] prjID := pData["prjID"] // Add sessionID to event Data reflectme.SetField(evData, "sessionID", sid) // IO socket can be nil when disconnected so := s.sessions.IOSocketGet(sid) if so != nil { (*so).Emit(evN, evData) } else { s.Log.Infof("%s not emitted: WS closed (sid:%s)", evN, sid) } prj := s.projects.Get(prjID) if prj != nil { evD := evData.(map[string]interface{}) cmdIDData, cmdIDExist := evD["cmdID"] svr := (*prj).GetServer() if svr != nil && cmdIDExist { svr.CommandDelete(cmdIDData.(string)) } else { s.Log.Infof("%s: cannot retrieve server for sid=%s, prjID=%s, evD=%v", evN, sid, prjID, evD) } } else { s.Log.Infof("%s: cannot retrieve project for sid=%s, prjID=%s", evN, sid, prjID) } // cleanup listener for i, evName := range evtOutList { svr.EventOff(evName, fwdFuncID[i]) } svr.EventOff(evN, exitFuncID) return nil } prjCfg := (*prj).GetProject() privData := map[string]string{"sessID": sess.ID, "prjID": prjCfg.ID} exitFuncID, err = svr.EventOn(xaapiv1.ExecExitEvent, privData, exitFunc) if err != nil { common.APIError(c, err.Error()) return } // Forward back command to right server res := xsapiv1.ExecResult{} xsArgs := &xsapiv1.ExecArgs{ ID: args.ID, SdkID: args.SdkID, CmdID: args.CmdID, Cmd: args.Cmd, Args: args.Args, Env: args.Env, RPath: args.RPath, TTY: args.TTY, TTYGdbserverFix: args.TTYGdbserverFix, LdLibPathNoReset: args.LdLibPathNoReset, ExitImmediate: args.ExitImmediate, CmdTimeout: args.CmdTimeout, } if err := svr.CommandExec(xsArgs, &res); err != nil { common.APIError(c, err.Error()) return } // Add command to running commands list if err := svr.CommandAdd(res.CmdID, xsArgs); err != nil { common.APIError(c, err.Error()) return } c.JSON(http.StatusOK, xaapiv1.ExecResult{Status: res.Status, CmdID: res.CmdID}) } // execSignalCmd executes remotely the signal command func (s *APIService) execSignalCmd(c *gin.Context) { args := xaapiv1.ExecSignalArgs{} if err := c.BindJSON(&args); err != nil { s.Log.Warningf("/signal invalid args, err=%v", err) common.APIError(c, "Invalid arguments") return } // Retrieve on which xds-server the command is running var svr *XdsServer var dataCmd interface{} for _, svr = range s.xdsServers { dataCmd = svr.CommandGet(args.CmdID) if dataCmd != nil { break } } if dataCmd == nil { common.APIError(c, "Cannot retrieve XDS Server for this cmdID") return } // Forward back command to right server res := xsapiv1.ExecSigResult{} xsArgs := &xsapiv1.ExecSignalArgs{ CmdID: args.CmdID, Signal: args.Signal, } if err := svr.CommandSignal(xsArgs, &res); err != nil { common.APIError(c, err.Error()) return } c.JSON(http.StatusOK, xaapiv1.ExecSignalResult{Status: res.Status, CmdID: res.CmdID}) }