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55 lines
1.6 KiB
55 lines
1.6 KiB
package weed_server
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import (
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"context"
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"github.com/seaweedfs/seaweedfs/weed/cluster"
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"github.com/seaweedfs/seaweedfs/weed/pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
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"math/rand"
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)
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func (ms *MasterServer) ListClusterNodes(ctx context.Context, req *master_pb.ListClusterNodesRequest) (*master_pb.ListClusterNodesResponse, error) {
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resp := &master_pb.ListClusterNodesResponse{}
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filerGroup := cluster.FilerGroupName(req.FilerGroup)
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clusterNodes := ms.Cluster.ListClusterNode(filerGroup, req.ClientType)
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clusterNodes = limitTo(clusterNodes, req.Limit)
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for _, node := range clusterNodes {
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resp.ClusterNodes = append(resp.ClusterNodes, &master_pb.ListClusterNodesResponse_ClusterNode{
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Address: string(node.Address),
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Version: node.Version,
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CreatedAtNs: node.CreatedTs.UnixNano(),
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DataCenter: string(node.DataCenter),
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Rack: string(node.Rack),
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})
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}
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return resp, nil
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}
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func (ms *MasterServer) GetOneFiler(filerGroup cluster.FilerGroupName) pb.ServerAddress {
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filers := ms.Cluster.ListClusterNode(filerGroup, cluster.FilerType)
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if len(filers) > 0 {
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return filers[rand.Intn(len(filers))].Address
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}
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return "localhost:8888"
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}
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func limitTo(nodes []*cluster.ClusterNode, limit int32) (selected []*cluster.ClusterNode) {
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if limit <= 0 || len(nodes) < int(limit) {
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return nodes
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}
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selectedSet := make(map[pb.ServerAddress]*cluster.ClusterNode)
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for i := 0; i < int(limit)*3; i++ {
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x := rand.Intn(len(nodes))
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if _, found := selectedSet[nodes[x].Address]; found {
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continue
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}
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selectedSet[nodes[x].Address] = nodes[x]
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}
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for _, node := range selectedSet {
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selected = append(selected, node)
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}
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return
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}
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