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dm.go
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dm.go
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// 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 main
import (
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"github.com/pingcap/dm/dm/config"
"github.com/pingcap/dm/dm/pb"
"github.com/pingcap/dm/pkg/utils"
"github.com/pingcap/errors"
"github.com/pingcap/log"
"go.uber.org/zap"
)
const (
// dm's http api version, define in https://github.com/pingcap/dm/blob/master/dm/proto/dmmaster.proto
apiVersion = "v1alpha1"
)
func getDMTaskCfgURL(dmAddr, task string) string {
return fmt.Sprintf("%s/apis/%s/subtasks/%s", dmAddr, apiVersion, task)
}
// getDMTaskCfg gets dm's sub task config
func getDMTaskCfg(dmAddr, task string) ([]*config.SubTaskConfig, error) {
tr := &http.Transport{
// TODO: support tls
//TLSClientConfig: tlsCfg,
}
client := &http.Client{Transport: tr}
req, err := http.NewRequest("GET", getDMTaskCfgURL(dmAddr, task), nil)
if err != nil {
return nil, err
}
resp, err := client.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, err
}
getSubTaskCfgResp := &pb.GetSubTaskCfgResponse{}
err = json.Unmarshal(body, getSubTaskCfgResp)
if err != nil {
return nil, err
}
if !getSubTaskCfgResp.Result {
return nil, errors.Errorf("fail to get sub task config from DM, %s", getSubTaskCfgResp.Msg)
}
subTaskCfgs := make([]*config.SubTaskConfig, 0, len(getSubTaskCfgResp.Cfgs))
for _, cfgBytes := range getSubTaskCfgResp.Cfgs {
subtaskCfg := &config.SubTaskConfig{}
err = subtaskCfg.Decode(cfgBytes, false)
if err != nil {
return nil, err
}
subtaskCfg.To.Password = utils.DecryptOrPlaintext(subtaskCfg.To.Password)
subtaskCfg.From.Password = utils.DecryptOrPlaintext(subtaskCfg.From.Password)
subTaskCfgs = append(subTaskCfgs, subtaskCfg)
}
log.Info("dm sub task configs", zap.Reflect("cfgs", subTaskCfgs))
return subTaskCfgs, nil
}