seaweedfs/weed/operation/assign_file_id.go

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package operation
import (
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"context"
"fmt"
"time"
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"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
)
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type VolumeAssignRequest struct {
Count uint64
Replication string
Collection string
Ttl string
DataCenter string
Rack string
DataNode string
}
type AssignResult struct {
Fid string `json:"fid,omitempty"`
Url string `json:"url,omitempty"`
PublicUrl string `json:"publicUrl,omitempty"`
Count uint64 `json:"count,omitempty"`
Error string `json:"error,omitempty"`
}
func Assign(server string, primaryRequest *VolumeAssignRequest, alternativeRequests ...*VolumeAssignRequest) (*AssignResult, error) {
var requests []*VolumeAssignRequest
requests = append(requests, primaryRequest)
requests = append(requests, alternativeRequests...)
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var lastError error
ret := &AssignResult{}
for i, request := range requests {
if request == nil {
continue
}
lastError = withMasterServerClient(server, func(masterClient master_pb.SeaweedClient) error {
ctx, cancel := context.WithTimeout(context.Background(), time.Duration(5*time.Second))
defer cancel()
req := &master_pb.AssignRequest{
Count: primaryRequest.Count,
Replication: primaryRequest.Replication,
Collection: primaryRequest.Collection,
Ttl: primaryRequest.Ttl,
DataCenter: primaryRequest.DataCenter,
Rack: primaryRequest.Rack,
DataNode: primaryRequest.DataNode,
}
resp, grpcErr := masterClient.Assign(ctx, req)
if grpcErr != nil {
return grpcErr
}
ret.Count = resp.Count
ret.Fid = resp.Fid
ret.Url = resp.Url
ret.PublicUrl = resp.PublicUrl
ret.Error = resp.Error
return nil
})
if lastError != nil {
continue
}
if ret.Count <= 0 {
lastError = fmt.Errorf("assign failure %d: %v", i+1, ret.Error)
continue
}
}
return ret, lastError
}