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/
start.go
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/
start.go
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/*
Copyright 2016 Medcl (m AT medcl.net)
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 pipe
import (
"errors"
"github.com/cihub/seelog"
"github.com/medcl/gopa/core/model"
. "github.com/medcl/gopa/core/pipeline"
"github.com/medcl/gopa/core/util"
"time"
)
const InitTask JointKey = "init_task"
const TaskID ParaKey = "TASK_ID"
type InitTaskJoint struct {
Parameters
Task *model.Task
}
func NewTaskJoint(task *model.Task) Joint {
return InitTaskJoint{Task: task}
}
func (this InitTaskJoint) Name() string {
return string(InitTask)
}
func (this InitTaskJoint) Process(context *Context) error {
seelog.Trace("start process")
var task *model.Task
if this.Task != nil {
task = this.Task
} else if this.Has(TaskID) {
//init task record
t, err := model.GetTask(this.MustGetString(TaskID))
if err != nil {
context.ErrorExit("task init error")
panic(err)
}
task = &t
} else {
context.ErrorExit("task init error")
panic(errors.New("task not set"))
}
if task == nil {
context.ErrorExit("task init error")
panic(errors.New("nil task"))
}
//update last check time
t1 := time.Now().UTC()
task.LastCheckTime = &t1
//update next check time //TODO
//init snapshot
var snapshot = &model.Snapshot{
ID: util.GetUUID(),
CreateTime: &t1,
}
context.Set(CONTEXT_CRAWLER_TASK, task)
context.Set(CONTEXT_CRAWLER_SNAPSHOT, snapshot)
return nil
}