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/*
* Copyright (C) 2017-2018 "IoT.bzh"
* Author Sebastien Douheret <sebastien@iot.bzh>
*
* 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 (
"fmt"
"strconv"
"strings"
"gerrit.automotivelinux.org/gerrit/src/xds/xds-agent/lib/xaapiv1"
"gerrit.automotivelinux.org/gerrit/src/xds/xds-agent/lib/xdsconfig"
"gerrit.automotivelinux.org/gerrit/src/xds/xds-server.git/lib/xsapiv1"
"github.com/gin-gonic/gin"
)
const apiBaseURL = "/api/v1"
// APIService .
type APIService struct {
*Context
apiRouter *gin.RouterGroup
serverIndex int
}
// NewAPIV1 creates a new instance of API service
func NewAPIV1(ctx *Context) *APIService {
s := &APIService{
Context: ctx,
apiRouter: ctx.webServer.router.Group(apiBaseURL),
serverIndex: 0,
}
s.apiRouter.GET("/version", s.getVersion)
s.apiRouter.GET("/config", s.getConfig)
s.apiRouter.POST("/config", s.setConfig)
// s.apiRouter.GET("/browse", s.browseFS)
s.apiRouter.GET("/projects", s.getProjects)
s.apiRouter.GET("/projects/:id", s.getProject)
s.apiRouter.PUT("/projects/:id", s.updateProject)
s.apiRouter.POST("/projects", s.addProject)
s.apiRouter.POST("/projects/sync/:id", s.syncProject)
s.apiRouter.DELETE("/projects/:id", s.delProject)
s.apiRouter.POST("/exec", s.execCmd)
s.apiRouter.POST("/exec/:id", s.execCmd)
s.apiRouter.POST("/signal", s.execSignalCmd)
s.apiRouter.GET("/events", s.eventsList)
s.apiRouter.POST("/events/register", s.eventsRegister)
s.apiRouter.POST("/events/unregister", s.eventsUnRegister)
return s
}
// Stop Used to stop/close created services
func (s *APIService) Stop() {
for _, svr := range s.xdsServers {
svr.Close()
}
}
// AddXdsServer Add a new XDS Server to the list of a server
func (s *APIService) AddXdsServer(cfg xdsconfig.XDSServerConf) (*XdsServer, error) {
var svr *XdsServer
var exist, tempoID bool
tempoID = false
// First check if not already exist and update it
if svr, exist = s.xdsServers[cfg.ID]; exist {
// Update: Found, so just update some settings
svr.ConnRetry = cfg.ConnRetry
tempoID = svr.IsTempoID()
if svr.Connected && !svr.Disabled && svr.BaseURL == cfg.URL && tempoID {
return svr, nil
}
// URL differ or not connected, so need to reconnect
svr.BaseURL = cfg.URL
} else {
// Create a new server object
cfg.URLIndex = strconv.Itoa(s.serverIndex)
s.serverIndex = s.serverIndex + 1
if cfg.APIBaseURL == "" {
cfg.APIBaseURL = apiBaseURL
}
if cfg.APIPartialURL == "" {
cfg.APIPartialURL = "/servers/" + cfg.URLIndex
}
// Create a new XDS Server
svr = NewXdsServer(s.Context, cfg)
svr.SetLoggerOutput(s.Config.LogVerboseOut)
// Define API group for this XDS Server
grp := s.apiRouter.Group(svr.PartialURL)
svr.SetAPIRouterGroup(grp)
// Define servers API processed locally
s.apiRouter.GET("/servers", s.getServersList) // API /servers
svr.apiRouter.GET("", s.getServer) // API /servers/:id
svr.apiRouter.POST("/reconnect", s.reconnectServer) // API /servers/:id/reconnect
// Declare passthrough API/routes
s.sdksPassthroughInit(svr)
s.targetsPassthroughInit(svr)
// Register callback on Connection
svr.ConnectOn(func(server *XdsServer) error {
// Add server to list
s.xdsServers[server.ID] = svr
// Register events forwarder
if err := s.sdksEventsForwardInit(server); err != nil {
s.Log.Errorf("XDS Server %v - sdk events forwarding error: %v", server.ID, err)
}
// Load projects
if err := s.projects.Init(server); err != nil {
s.Log.Errorf("XDS Server %v - project init error: %v", server.ID, err)
}
// Registered to all events
if err := server.EventRegister(xsapiv1.EVTAll, ""); err != nil {
s.Log.Errorf("XDS Server %v - register all events error: %v", server.ID, err)
}
return nil
})
}
// Established connection
err := svr.Connect()
// Delete temporary ID with it has been replaced by right Server ID
if tempoID && !svr.IsTempoID() {
delete(s.xdsServers, cfg.ID)
}
return svr, err
}
// DelXdsServer Delete an XDS Server from the list of a server
func (s *APIService) DelXdsServer(id string) error {
if _, exist := s.xdsServers[id]; !exist {
return fmt.Errorf("Unknown Server ID %s", id)
}
// Don't really delete, just disable it
s.xdsServers[id].Close()
return nil
}
// UpdateXdsServer Update XDS Server configuration settings
func (s *APIService) UpdateXdsServer(cfg xaapiv1.ServerCfg) error {
if _, exist := s.xdsServers[cfg.ID]; !exist {
return fmt.Errorf("Unknown Server ID %s", cfg.ID)
}
svr := s.xdsServers[cfg.ID]
// Update only some configurable fields
svr.ConnRetry = cfg.ConnRetry
return nil
}
// GetXdsServerFromURLIndex Retrieve XdsServer from URLIndex value
func (s *APIService) GetXdsServerFromURLIndex(urlIdx string) *XdsServer {
for _, svr := range s.xdsServers {
if svr.URLIndex == urlIdx {
return svr
}
}
return nil
}
// ParamGetIndex Retrieve numerical parameter in request url
func (s *APIService) ParamGetIndex(c *gin.Context) string {
uri := c.Request.RequestURI
for idx := strings.LastIndex(uri, "/"); idx > 0; {
id := uri[idx+1:]
if _, err := strconv.Atoi(id); err == nil {
return id
}
uri = uri[:idx]
idx = strings.LastIndex(uri, "/")
}
return ""
}
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