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87 lines
1.8 KiB
87 lines
1.8 KiB
package storage
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import (
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"errors"
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"fmt"
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"net/url"
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"time"
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"github.com/chrislusf/seaweedfs/go/glog"
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"github.com/chrislusf/seaweedfs/go/util"
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)
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type TaskParams map[string]string
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var (
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ErrTaskTimeout = errors.New("TaskTimeout")
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)
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type TaskCli struct {
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TID string
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DataNode string
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}
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func NewTaskCli(dataNode string, taskType string, params TaskParams) (*TaskCli, error) {
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args := url.Values{}
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args.Set("task", taskType)
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for k, v := range params {
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args.Set(k, v)
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}
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m, e := util.RemoteApiCall(dataNode, "/admin/task/new", args)
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if e != nil {
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return nil, e
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}
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tid := m["tid"].(string)
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if tid == "" {
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return nil, fmt.Errorf("Empty %s task", taskType)
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}
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return &TaskCli{
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TID: tid,
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DataNode: dataNode,
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}, nil
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}
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func (c *TaskCli) WaitAndQueryResult(timeout time.Duration) error {
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startTime := time.Now()
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args := url.Values{}
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args.Set("task", c.TID)
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args.Set("timeout", time.Minute.String())
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tryTimes := 0
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for time.Since(startTime) < timeout {
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_, e := util.RemoteApiCall(c.DataNode, "/admin/task/query", args)
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if e == nil {
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//task have finished and have no error
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return nil
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}
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if util.IsRemoteApiError(e) {
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if e.Error() == ErrTaskNotFinish.Error() {
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tryTimes = 0
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continue
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}
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return e
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} else {
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tryTimes++
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if tryTimes >= 10 {
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return e
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}
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glog.V(0).Infof("query task (%s) error %v, wait 1 minute then retry %d times", c.TID, e, tryTimes)
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time.Sleep(time.Minute)
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}
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}
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return ErrTaskTimeout
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}
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func (c *TaskCli) Commit() error {
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args := url.Values{}
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args.Set("task", c.TID)
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_, e := util.RemoteApiCall(c.DataNode, "/admin/task/commit", args)
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return e
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}
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func (c *TaskCli) Clean() error {
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args := url.Values{}
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args.Set("task", c.TID)
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_, e := util.RemoteApiCall(c.DataNode, "/admin/task/clean", args)
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return e
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}
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