CreateJob : create job, add to cache if job exist, this operation will replace job.

resolve default job config.

GetHistory returns all sync history about specified task.

GetJob : get job from cache by name.

InitJobs from conf,then create and start.

add jobName to cache list.

StartJob :.

StopJob.

History is the sync history of a task.

Define of Job.

sync task status enum.

task start status enum.