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multi: split database storage into remote and local instances

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In this commit, we split the database storage into two classes: remote
and local data. If etcd isn't active, then everything is actually just
local though we use two pointers everywhere. If etcd is active, then
everything but the graph goes into the remote database.
This commit is contained in:
Olaoluwa Osuntokun
2020-05-06 20:49:36 -07:00
parent 7355c8ba3a
commit f58b00ef55
8 changed files with 240 additions and 123 deletions
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2
peer/brontide.go
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@@ -456,7 +456,7 @@ func (p *Brontide) loadActiveChannels(chans []*channeldb.OpenChannel) (
// Before we register this new link with the HTLC Switch, we'll
// need to fetch its current link-layer forwarding policy from
// the database.
graph := p.cfg.ChannelDB.ChannelGraph()
graph := p.cfg.ChannelGraph
info, p1, p2, err := graph.FetchChannelEdgesByOutpoint(chanPoint)
if err != nil && err != channeldb.ErrEdgeNotFound {
return nil, err

7
peer/config.go
View File

@@ -90,10 +90,13 @@ type Config struct {
// ChannelLinkConfig.
InterceptSwitch *htlcswitch.InterceptableSwitch
// ChannelDB is used to fetch opened channels, closed channels, and the
// channel graph.
// ChannelDB is used to fetch opened channels, and closed channels.
ChannelDB *channeldb.DB
// ChannelGraph is a pointer to the channel graph which is used to
// query information about the set of known active channels.
ChannelGraph *channeldb.ChannelGraph
// ChainArb is used to subscribe to channel events, update contract signals,
// and force close channels.
ChainArb *contractcourt.ChainArbitrator