/
task.go
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/
task.go
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// Copyright 2020 the go-etl Authors.
//
// 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 dbms
import (
"context"
"time"
"github.com/Breeze0806/go-etl/config"
coreconst "github.com/Breeze0806/go-etl/datax/common/config/core"
"github.com/Breeze0806/go-etl/datax/common/spi/writer"
"github.com/Breeze0806/go-etl/storage/database"
)
// Task
type Task struct {
*writer.BaseTask
Handler DbHandler
Execer Execer
Config Config
Table database.Table
}
// NewTask Create a task through the database handle
func NewTask(handler DbHandler) *Task {
return &Task{
BaseTask: writer.NewBaseTask(),
Handler: handler,
}
}
// Init
func (t *Task) Init(ctx context.Context) (err error) {
var name string
if name, err = t.PluginConf().GetString("dialect"); err != nil {
return t.Wrapf(err, "GetString fail")
}
if t.Config, err = t.Handler.Config(t.PluginJobConf()); err != nil {
return t.Wrapf(err, "Config fail")
}
var jobSettingConf *config.JSON
if jobSettingConf, err = t.PluginJobConf().GetConfig(coreconst.DataxJobSetting); err != nil {
jobSettingConf, _ = config.NewJSONFromString("{}")
err = nil
}
jobSettingConf.Set("username", t.Config.GetUsername())
jobSettingConf.Set("password", t.Config.GetPassword())
jobSettingConf.Set("url", t.Config.GetURL())
if t.Execer, err = t.Handler.Execer(name, jobSettingConf); err != nil {
return t.Wrapf(err, "Execer fail")
}
timeoutCtx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
defer cancel()
err = t.Execer.PingContext(timeoutCtx)
if err != nil {
return t.Wrapf(err, "PingContext fail")
}
param := t.Handler.TableParam(t.Config, t.Execer)
if setter, ok := param.Table().(database.ConfigSetter); ok {
setter.SetConfig(t.PluginJobConf())
}
if t.Table, err = t.Execer.FetchTableWithParam(ctx, param); err != nil {
return t.Wrapf(err, "FetchTableWithParam fail")
}
return
}
// Destroy
func (t *Task) Destroy(ctx context.Context) (err error) {
if t.Execer != nil {
err = t.Execer.Close()
}
return t.Wrapf(err, "Close fail")
}