tdo not duplicate ctn in channel log and config - electrum - Electrum Bitcoin wallet
 (HTM) git clone https://git.parazyd.org/electrum
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       ---
 (DIR) commit 82491ff083368fe57821998aeea7f5f4b1f4e5a8
 (DIR) parent 8d28188d246e63e5bb734bfdc0cf76d78410f48f
 (HTM) Author: ThomasV <thomasv@electrum.org>
       Date:   Thu,  7 Mar 2019 12:44:22 +0100
       
       do not duplicate ctn in channel log and config
       
       Diffstat:
         M electrum/lnchannel.py               |       5 +++--
         M electrum/lnhtlc.py                  |      48 ++++++++++++++++----------------
       
       2 files changed, 27 insertions(+), 26 deletions(-)
       ---
 (DIR) diff --git a/electrum/lnchannel.py b/electrum/lnchannel.py
       t@@ -151,7 +151,8 @@ class Channel(PrintError):
                self.remote_commitment_to_be_revoked = Transaction(state["remote_commitment_to_be_revoked"])
                self.remote_commitment_to_be_revoked.deserialize(True)
        
       -        self.hm = HTLCManager(state.get('log'))
       +        log = state.get('log')
       +        self.hm = HTLCManager(self.config[LOCAL].ctn if log else 0, self.config[REMOTE].ctn if log else 0, log)
        
                self.name = name
        
       t@@ -535,7 +536,7 @@ class Channel(PrintError):
                pending outgoing HTLCs, is used in the UI.
                """
                assert type(subject) is HTLCOwner
       -        ctn = self.hm.log[subject]['ctn'] + 1
       +        ctn = self.hm.ctn[subject] + 1
                return self.balance(subject, ctn)\
                        - htlcsum(self.hm.htlcs_by_direction(subject, SENT, ctn))
        
 (DIR) diff --git a/electrum/lnhtlc.py b/electrum/lnhtlc.py
       t@@ -3,19 +3,19 @@ from .lnutil import SENT, RECEIVED, LOCAL, REMOTE, HTLCOwner, UpdateAddHtlc, Dir
        from .util import bh2u
        
        class HTLCManager:
       -    def __init__(self, log=None):
       +    def __init__(self, local_ctn=0, remote_ctn=0, log=None):
       +        self.ctn = {LOCAL:local_ctn, REMOTE: remote_ctn}
                self.expect_sig = {SENT: False, RECEIVED: False}
                if log is None:
       -            initial = {'ctn': 0, 'adds': {}, 'locked_in': {}, 'settles': {}, 'fails': {}}
       +            initial = {'adds': {}, 'locked_in': {}, 'settles': {}, 'fails': {}}
                    log = {LOCAL: deepcopy(initial), REMOTE: deepcopy(initial)}
                else:
                    assert type(log) is dict
                    log = {HTLCOwner(int(x)): y for x, y in deepcopy(log).items()}
       -            # log[sub]['ctn'] is the ctn for the oldest unrevoked ctx of sub
       +            # self.ctn[sub] is the ctn for the oldest unrevoked ctx of sub
                    for sub in (LOCAL, REMOTE):
                        log[sub]['adds'] = {int(x): UpdateAddHtlc(*y) for x, y in log[sub]['adds'].items()}
                        coerceHtlcOwner2IntMap = lambda x: {HTLCOwner(int(y)): z for y, z in x.items()}
       -
                        # "side who offered htlc" -> action -> htlc_id -> whose ctx -> ctn
                        log[sub]['locked_in'] = {int(x): coerceHtlcOwner2IntMap(y) for x, y in log[sub]['locked_in'].items()}
                        log[sub]['settles'] = {int(x): coerceHtlcOwner2IntMap(y) for x, y in log[sub]['settles'].items()}
       t@@ -37,47 +37,47 @@ class HTLCManager:
                adds = self.log[LOCAL]['adds']
                assert type(adds) is not str
                adds[htlc_id] = htlc
       -        self.log[LOCAL]['locked_in'][htlc_id] = {LOCAL: None, REMOTE: self.log[REMOTE]['ctn']+1}
       +        self.log[LOCAL]['locked_in'][htlc_id] = {LOCAL: None, REMOTE: self.ctn[REMOTE]+1}
                self.expect_sig[SENT] = True
                return htlc
        
            def recv_htlc(self, htlc):
                htlc_id = htlc.htlc_id
                self.log[REMOTE]['adds'][htlc_id] = htlc
       -        l = self.log[REMOTE]['locked_in'][htlc_id] = {LOCAL: self.log[LOCAL]['ctn']+1, REMOTE: None}
       +        l = self.log[REMOTE]['locked_in'][htlc_id] = {LOCAL: self.ctn[LOCAL]+1, REMOTE: None}
                self.expect_sig[RECEIVED] = True
        
            def send_ctx(self):
       -        next_ctn = self.log[REMOTE]['ctn'] + 1
       +        next_ctn = self.ctn[REMOTE] + 1
                for locked_in in self.log[REMOTE]['locked_in'].values():
                    if locked_in[REMOTE] is None:
                        locked_in[REMOTE] = next_ctn
                self.expect_sig[SENT] = False
        
            def recv_ctx(self):
       -        next_ctn = self.log[LOCAL]['ctn'] + 1
       +        next_ctn = self.ctn[LOCAL] + 1
                for locked_in in self.log[LOCAL]['locked_in'].values():
                    if locked_in[LOCAL] is None:
                        locked_in[LOCAL] = next_ctn
                self.expect_sig[RECEIVED] = False
        
            def send_rev(self):
       -        self.log[LOCAL]['ctn'] += 1
       +        self.ctn[LOCAL] += 1
                for htlc_id, ctns in self.log[LOCAL]['settles'].items():
                    if ctns[REMOTE] is None:
       -                ctns[REMOTE] = self.log[REMOTE]['ctn'] + 1
       +                ctns[REMOTE] = self.ctn[REMOTE] + 1
        
            def recv_rev(self):
       -        self.log[REMOTE]['ctn'] += 1
       +        self.ctn[REMOTE] += 1
                did_set_htlc_height = False
                for htlc_id, ctns in self.log[LOCAL]['locked_in'].items():
                    if ctns[LOCAL] is None:
                        did_set_htlc_height = True
       -                assert ctns[REMOTE] == self.log[REMOTE]['ctn']
       -                ctns[LOCAL] = self.log[LOCAL]['ctn'] + 1
       +                assert ctns[REMOTE] == self.ctn[REMOTE]
       +                ctns[LOCAL] = self.ctn[LOCAL] + 1
                for htlc_id, ctns in self.log[REMOTE]['settles'].items():
                    if ctns[LOCAL] is None:
       -                ctns[LOCAL] = self.log[LOCAL]['ctn'] + 1
       +                ctns[LOCAL] = self.ctn[LOCAL] + 1
                return did_set_htlc_height
        
            def htlcs_by_direction(self, subject, direction, ctn=None):
       t@@ -87,7 +87,7 @@ class HTLCManager:
                assert type(subject) is HTLCOwner
                assert type(direction) is Direction
                if ctn is None:
       -            ctn = self.log[subject]['ctn']
       +            ctn = self.ctn[subject]
                l = []
                if direction == SENT and subject == LOCAL:
                    party = LOCAL
       t@@ -113,7 +113,7 @@ class HTLCManager:
            def htlcs(self, subject, ctn=None):
                assert type(subject) is HTLCOwner
                if ctn is None:
       -            ctn = self.log[subject]['ctn']
       +            ctn = self.ctn[subject]
                l = []
                l += [(SENT, x) for x in self.htlcs_by_direction(subject, SENT, ctn)]
                l += [(RECEIVED, x) for x in self.htlcs_by_direction(subject, RECEIVED, ctn)]
       t@@ -121,24 +121,24 @@ class HTLCManager:
        
            def current_htlcs(self, subject):
                assert type(subject) is HTLCOwner
       -        ctn = self.log[subject]['ctn']
       +        ctn = self.ctn[subject]
                return self.htlcs(subject, ctn)
        
            def pending_htlcs(self, subject):
                assert type(subject) is HTLCOwner
       -        ctn = self.log[subject]['ctn'] + 1
       +        ctn = self.ctn[subject] + 1
                return self.htlcs(subject, ctn)
        
            def send_settle(self, htlc_id):
       -        self.log[REMOTE]['settles'][htlc_id] = {LOCAL: None, REMOTE: self.log[REMOTE]['ctn'] + 1}
       +        self.log[REMOTE]['settles'][htlc_id] = {LOCAL: None, REMOTE: self.ctn[REMOTE] + 1}
        
            def recv_settle(self, htlc_id):
       -        self.log[LOCAL]['settles'][htlc_id] = {LOCAL: self.log[LOCAL]['ctn'] + 1, REMOTE: None}
       +        self.log[LOCAL]['settles'][htlc_id] = {LOCAL: self.ctn[LOCAL] + 1, REMOTE: None}
        
            def settled_htlcs_by(self, subject, ctn=None):
                assert type(subject) is HTLCOwner
                if ctn is None:
       -            ctn = self.log[subject]['ctn']
       +            ctn = self.ctn[subject]
                d = []
                for htlc_id, ctns in self.log[subject]['settles'].items():
                    if ctns[subject] <= ctn:
       t@@ -148,7 +148,7 @@ class HTLCManager:
            def settled_htlcs(self, subject, ctn=None):
                assert type(subject) is HTLCOwner
                if ctn is None:
       -            ctn = self.log[subject]['ctn']
       +            ctn = self.ctn[subject]
                sent = [(SENT, x) for x in self.settled_htlcs_by(subject, ctn)]
                other = subject.inverted()
                received = [(RECEIVED, x) for x in self.settled_htlcs_by(other, ctn)]
       t@@ -165,7 +165,7 @@ class HTLCManager:
                        if ctns[LOCAL] == ctn]
        
            def send_fail(self, htlc_id):
       -        self.log[REMOTE]['fails'][htlc_id] = self.log[REMOTE]['ctn'] + 1
       +        self.log[REMOTE]['fails'][htlc_id] = self.ctn[REMOTE] + 1
        
            def recv_fail(self, htlc_id):
       -        self.log[LOCAL]['fails'][htlc_id] = self.log[LOCAL]['ctn'] + 1
       +        self.log[LOCAL]['fails'][htlc_id] = self.ctn[LOCAL] + 1