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channeldb: don't use iota for the ChannelType enum

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This commit modifies the ChannelType enum to no longer use iota as
changes in the definition would cause the values to shift, breaking the
long-term stability required for persistence. Instead, we now select
values manually to indicate the particular channel type.
This commit is contained in:
Olaoluwa Osuntokun 2016-11-16 11:45:10 -08:00
parent 08a852bf90
commit 3e4981d15f
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GPG Key ID: 9CC5B105D03521A2
1 changed files with 5 additions and 2 deletions
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7
channeldb/channel.go
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@ -103,14 +103,17 @@ var (
type ChannelType uint8 type ChannelType uint8
const ( const (
// NOTE: iota isn't used here for this enum needs to be stable
// long-term as it will be persisted to the database.
// SingleFunder represents a channel wherein one party solely funds the // SingleFunder represents a channel wherein one party solely funds the
// entire capacity of the channel. // entire capacity of the channel.
SingleFunder = iota SingleFunder = 0
// DualFunder represents a channel wherein both parties contribute // DualFunder represents a channel wherein both parties contribute
// funds towards the total capacity of the channel. The channel may be // funds towards the total capacity of the channel. The channel may be
// funded symmetrically or asymmetrically. // funded symmetrically or asymmetrically.
DualFunder DualFunder = 1
) )
// OpenChannel encapsulates the persistent and dynamic state of an open channel // OpenChannel encapsulates the persistent and dynamic state of an open channel