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rpcserver: calculate and populate medianChanSizeSat in NetworkInfo

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Johan T. Halseth 2019-03-27 15:04:15 +01:00
parent f96dbd2377
commit d6d66e631a
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GPG Key ID: 15BAADA29DA20D26
1 changed files with 12 additions and 3 deletions
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15
rpcserver.go
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@ -3959,6 +3959,7 @@ func (r *rpcServer) GetNetworkInfo(ctx context.Context,
totalNetworkCapacity btcutil.Amount
minChannelSize btcutil.Amount = math.MaxInt64
maxChannelSize btcutil.Amount
medianChanSize btcutil.Amount
)
// We'll use this map to de-duplicate channels during our traversal.
@ -3966,6 +3967,10 @@ func (r *rpcServer) GetNetworkInfo(ctx context.Context,
// edges for each channel within the graph.
seenChans := make(map[uint64]struct{})
// We also keep a list of all encountered capacities, in order to
// calculate the median channel size.
var allChans []btcutil.Amount
// We'll run through all the known nodes in the within our view of the
// network, tallying up the total number of nodes, and also gathering
// each node so we can measure the graph diameter and degree stats
@ -4012,6 +4017,7 @@ func (r *rpcServer) GetNetworkInfo(ctx context.Context,
numChannels++
seenChans[edge.ChannelID] = struct{}{}
allChans = append(allChans, edge.Capacity)
return nil
}); err != nil {
return err
@ -4028,6 +4034,9 @@ func (r *rpcServer) GetNetworkInfo(ctx context.Context,
return nil, err
}
// Find the median.
medianChanSize = autopilot.Median(allChans)
// If we don't have any channels, then reset the minChannelSize to zero
// to avoid outputting NaN in encoded JSON.
if numChannels == 0 {
@ -4037,7 +4046,6 @@ func (r *rpcServer) GetNetworkInfo(ctx context.Context,
// TODO(roasbeef): graph diameter
// TODO(roasbeef): also add oldest channel?
// * also add median channel size
netInfo := &lnrpc.NetworkInfo{
MaxOutDegree: maxChanOut,
AvgOutDegree: float64(numChannels) / float64(numNodes),
@ -4046,8 +4054,9 @@ func (r *rpcServer) GetNetworkInfo(ctx context.Context,
TotalNetworkCapacity: int64(totalNetworkCapacity),
AvgChannelSize: float64(totalNetworkCapacity) / float64(numChannels),
MinChannelSize: int64(minChannelSize),
MaxChannelSize: int64(maxChannelSize),
MinChannelSize: int64(minChannelSize),
MaxChannelSize: int64(maxChannelSize),
MedianChannelSizeSat: int64(medianChanSize),
}
// Similarly, if we don't have any channels, then we'll also set the