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80 lines
2.0 KiB
80 lines
2.0 KiB
package operation
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import (
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"encoding/json"
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"fmt"
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"net/url"
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"strconv"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
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type VolumeAssignRequest struct {
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Count uint64
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Replication string
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Collection string
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Ttl string
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DataCenter string
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Rack string
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DataNode string
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}
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type AssignResult struct {
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Fid string `json:"fid,omitempty"`
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Url string `json:"url,omitempty"`
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PublicUrl string `json:"publicUrl,omitempty"`
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Count uint64 `json:"count,omitempty"`
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Error string `json:"error,omitempty"`
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}
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func Assign(server string, primaryRequest *VolumeAssignRequest, alternativeRequests ...*VolumeAssignRequest) (*AssignResult, error) {
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var requests []*VolumeAssignRequest
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requests = append(requests, primaryRequest)
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requests = append(requests, alternativeRequests...)
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var lastError error
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for i, request := range requests {
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if request == nil {
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continue
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}
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values := make(url.Values)
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values.Add("count", strconv.FormatUint(request.Count, 10))
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if request.Replication != "" {
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values.Add("replication", request.Replication)
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}
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if request.Collection != "" {
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values.Add("collection", request.Collection)
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}
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if request.Ttl != "" {
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values.Add("ttl", request.Ttl)
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}
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if request.DataCenter != "" {
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values.Add("dataCenter", request.DataCenter)
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}
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if request.Rack != "" {
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values.Add("rack", request.Rack)
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}
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if request.DataNode != "" {
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values.Add("dataNode", request.DataNode)
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}
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postUrl := fmt.Sprintf("http://%s/dir/assign", server)
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jsonBlob, err := util.Post(postUrl, values)
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glog.V(2).Infof("assign %d result from %s %+v : %s", i, postUrl, values, string(jsonBlob))
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if err != nil {
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return nil, err
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}
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var ret AssignResult
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err = json.Unmarshal(jsonBlob, &ret)
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if err != nil {
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return nil, fmt.Errorf("/dir/assign result JSON unmarshal error:%v, json:%s", err, string(jsonBlob))
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}
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if ret.Count <= 0 {
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lastError = fmt.Errorf("assign failure %d: %v", i+1, ret.Error)
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continue
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}
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return &ret, nil
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}
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return nil, lastError
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}
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