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httpsvr.go
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httpsvr.go
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/*
* Copyright (C) 2018 The ontology Authors
* This file is part of The ontology library.
*
* The ontology is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The ontology is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with The ontology. If not, see <http://www.gnu.org/licenses/>.
*/
package sigsvr
import (
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"github.com/tsfdsong/ontology/cmd/sigsvr/common"
"github.com/tsfdsong/ontology/common/log"
)
var DefCliRpcSvr = NewCliRpcServer()
type CliRpcServer struct {
address string
port uint
handlers map[string]func(req *common.CliRpcRequest, resp *common.CliRpcResponse)
httpSvr *http.Server
httpSvtMux *http.ServeMux
}
func NewCliRpcServer() *CliRpcServer {
return &CliRpcServer{
handlers: make(map[string]func(req *common.CliRpcRequest, resp *common.CliRpcResponse)),
}
}
func (this *CliRpcServer) Start(address string, port uint) {
this.address = address
this.port = port
this.httpSvtMux = http.NewServeMux()
this.httpSvr = &http.Server{
Addr: fmt.Sprintf("%s:%d", address, port),
Handler: this.httpSvtMux,
}
this.httpSvtMux.HandleFunc("/cli", this.Handler)
err := this.httpSvr.ListenAndServe()
if err != nil {
if err == http.ErrServerClosed {
return
}
panic(fmt.Sprintf("httpSvr.ListenAndServe error:%s", err))
}
}
func (this *CliRpcServer) RegHandler(method string, handler func(req *common.CliRpcRequest, resp *common.CliRpcResponse)) {
this.handlers[method] = handler
}
func (this *CliRpcServer) GetHandler(method string) func(req *common.CliRpcRequest, resp *common.CliRpcResponse) {
handler, ok := this.handlers[method]
if !ok {
return nil
}
return handler
}
func (this *CliRpcServer) Handler(w http.ResponseWriter, r *http.Request) {
resp := &common.CliRpcResponse{}
defer func() {
w.Header().Add("Access-Control-Allow-Headers", "Content-Type")
w.Header().Set("content-type", "application/json;charset=utf-8")
w.Header().Set("Access-Control-Allow-Origin", "*")
w.WriteHeader(http.StatusOK)
if resp.ErrorInfo == "" {
resp.ErrorInfo = common.GetCLIErrorDesc(resp.ErrorCode)
}
data, err := json.Marshal(resp)
if err != nil {
log.Error("CliRpcServer json.Marshal JsonRpcResponse:%+v error:%s", resp, err)
return
}
_, err = w.Write(data)
if err != nil {
log.Error("CliRpcServer Write:%s error %s", data, err)
return
}
log.Infof("[CliRpcResponse]%s", data)
}()
if r.Method != http.MethodPost {
resp.ErrorCode = common.CLIERR_HTTP_METHOD_INVALID
return
}
data, err := ioutil.ReadAll(r.Body)
if err != nil {
log.Error("CliRpcServer read body error:%s", err)
resp.ErrorCode = common.CLIERR_INVALID_REQUEST
resp.ErrorInfo = "invalid body"
return
}
defer r.Body.Close()
req := &common.CliRpcRequest{}
err = json.Unmarshal(data, req)
if err != nil {
log.Errorf("CliRpcServer json.Unmarshal JsonRpcRequest error:%s", err)
resp.ErrorCode = common.CLIERR_INVALID_PARAMS
return
}
pwd := req.Pwd
req.Pwd = "*"
logData, _ := json.Marshal(req)
log.Infof("[CliRpcRequest]%s", logData)
req.Pwd = pwd
resp.Method = req.Method
resp.Qid = req.Qid
handler := this.GetHandler(req.Method)
if handler == nil {
resp.ErrorCode = common.CLIERR_UNSUPPORT_METHOD
return
}
handler(req, resp)
}
func (this *CliRpcServer) Close() {
err := this.httpSvr.Close()
if err != nil {
log.Error("httpSvr close error:%s", err)
}
}