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Make AbortUpgrade panic on failure #4011

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merged 6 commits into from
Jul 6, 2023
Merged

Make AbortUpgrade panic on failure #4011

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b06ac7d
chore: update abort upgrade function to panic on error
chatton Jul 5, 2023
2f3e2b3
Merge branch '04-channel-upgrades' into cian/issue#3903-AbortUpgrade-…
chatton Jul 5, 2023
5b5d60b
Merge branch '04-channel-upgrades' into cian/issue#3903-AbortUpgrade-…
chatton Jul 5, 2023
488a050
Merge branch '04-channel-upgrades' into cian/issue#3903-AbortUpgrade-…
chatton Jul 5, 2023
d4022a4
apply review suggestions
crodriguezvega Jul 6, 2023
cb7575c
Merge branch '04-channel-upgrades' into cian/issue#3903-AbortUpgrade-…
crodriguezvega Jul 6, 2023
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15 changes: 12 additions & 3 deletions modules/core/04-channel/keeper/upgrade.go
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Original file line number Diff line number Diff line change
Expand Up @@ -805,9 +805,18 @@ func (k Keeper) constructProposedUpgrade(ctx sdk.Context, portID, channelID stri
}, nil
}

// AbortUpgrade will restore the channel state and flush status to their pre-upgrade state so that upgrade is aborted.
// any unnecessary state is deleted. An error receipt is written, and the OnChanUpgradeRestore callback is called.
func (k Keeper) AbortUpgrade(ctx sdk.Context, portID, channelID string, err error) error {
// MustAbortUpgrade will restore the channel state and flush status to their pre-upgrade state so that upgrade is aborted.
// Any unnecessary state is deleted and an error receipt is written.
// This function is expected to always succeed, a panic will occur if an error occurs.
func (k Keeper) MustAbortUpgrade(ctx sdk.Context, portID, channelID string, err error) {
if err := k.abortUpgrade(ctx, portID, channelID, err); err != nil {
panic(err)
}
}

// abortUpgrade will restore the channel state and flush status to their pre-upgrade state so that upgrade is aborted.
// Any unnecessary state is delete and an error receipt is written.
func (k Keeper) abortUpgrade(ctx sdk.Context, portID, channelID string, err error) error {
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@DimitrisJim DimitrisJim Jul 5, 2023 •
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do we see abortUpgrade ever being used w/o panicking, i.e point in keeping it separate?

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@chatton chatton Jul 5, 2023 •
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I don't think so. I left it here as I typically like having panics happen in a single place. I find it easier to deal with regular errors as much as possible, and panic only when we need to.

if err == nil {
return errorsmod.Wrap(types.ErrInvalidUpgradeError, "cannot abort upgrade handshake with nil error")
}
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12 changes: 8 additions & 4 deletions modules/core/04-channel/keeper/upgrade_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1305,10 +1305,10 @@ func (suite *KeeperTestSuite) TestAbortHandshake() {

tc.malleate()

err := channelKeeper.AbortUpgrade(suite.chainA.GetContext(), path.EndpointA.ChannelConfig.PortID, path.EndpointA.ChannelID, upgradeError)
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guess we could also define the function as a var and trim down on the NotPanics/Panics calls in a similar vein. Leaving to your discretion.


if tc.expPass {
suite.Require().NoError(err)
suite.Require().NotPanics(func() {
channelKeeper.MustAbortUpgrade(suite.chainA.GetContext(), path.EndpointA.ChannelConfig.PortID, path.EndpointA.ChannelID, upgradeError)
})

channel, found := channelKeeper.GetChannel(suite.chainA.GetContext(), path.EndpointA.ChannelConfig.PortID, path.EndpointA.ChannelID)
suite.Require().True(found, "channel should be found")
Expand All @@ -1329,7 +1329,11 @@ func (suite *KeeperTestSuite) TestAbortHandshake() {
suite.Require().False(found, "counterparty last packet sequence should not be found")

} else {
suite.Require().Error(err)

suite.Require().Panics(func() {
channelKeeper.MustAbortUpgrade(suite.chainA.GetContext(), path.EndpointA.ChannelConfig.PortID, path.EndpointA.ChannelID, upgradeError)
})

channel, found := channelKeeper.GetChannel(suite.chainA.GetContext(), path.EndpointA.ChannelConfig.PortID, path.EndpointA.ChannelID)
if found { // test cases uses a channel that exists
suite.Require().Equal(types.INITUPGRADE, channel.State, "channel state should not be restored to %s", types.INITUPGRADE.String())
Expand Down
16 changes: 4 additions & 12 deletions modules/core/keeper/msg_server.go
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Original file line number Diff line number Diff line change
Expand Up @@ -769,9 +769,7 @@ func (k Keeper) ChannelUpgradeTry(goCtx context.Context, msg *channeltypes.MsgCh
if err != nil {
ctx.Logger().Error("channel upgrade try failed", "error", errorsmod.Wrap(err, "channel upgrade try failed"))
if upgradeErr, ok := err.(*channeltypes.UpgradeError); ok {
if err := k.ChannelKeeper.AbortUpgrade(ctx, msg.PortId, msg.ChannelId, upgradeErr); err != nil {
return nil, errorsmod.Wrap(err, "channel upgrade try (abort upgrade) failed")
}
k.ChannelKeeper.MustAbortUpgrade(ctx, msg.PortId, msg.ChannelId, upgradeErr)

// NOTE: a FAILURE result is returned to the client and an error receipt is written to state.
// This signals to the relayer to begin the cancel upgrade handshake subprotocol.
Expand All @@ -786,9 +784,7 @@ func (k Keeper) ChannelUpgradeTry(goCtx context.Context, msg *channeltypes.MsgCh
upgradeVersion, err := cbs.OnChanUpgradeTry(cacheCtx, msg.PortId, msg.ChannelId, upgrade.Fields.Ordering, upgrade.Fields.ConnectionHops, upgrade.Fields.Version)
if err != nil {
ctx.Logger().Error("channel upgrade try callback failed", "port-id", msg.PortId, "channel-id", msg.ChannelId, "error", err.Error())
if err := k.ChannelKeeper.AbortUpgrade(ctx, msg.PortId, msg.ChannelId, err); err != nil {
return nil, err
}
k.ChannelKeeper.MustAbortUpgrade(ctx, msg.PortId, msg.ChannelId, err)

return &channeltypes.MsgChannelUpgradeTryResponse{Result: channeltypes.FAILURE}, nil
}
Expand Down Expand Up @@ -826,9 +822,7 @@ func (k Keeper) ChannelUpgradeAck(goCtx context.Context, msg *channeltypes.MsgCh
if err != nil {
ctx.Logger().Error("channel upgrade ack failed", "error", errorsmod.Wrap(err, "channel upgrade ack failed"))
if upgradeErr, ok := err.(*channeltypes.UpgradeError); ok {
if err := k.ChannelKeeper.AbortUpgrade(ctx, msg.PortId, msg.ChannelId, upgradeErr); err != nil {
return nil, errorsmod.Wrap(err, "channel upgrade ack (abort upgrade) failed")
}
k.ChannelKeeper.MustAbortUpgrade(ctx, msg.PortId, msg.ChannelId, upgradeErr)

// NOTE: a FAILURE result is returned to the client and an error receipt is written to state.
// This signals to the relayer to begin the cancel upgrade handshake subprotocol.
Expand All @@ -843,9 +837,7 @@ func (k Keeper) ChannelUpgradeAck(goCtx context.Context, msg *channeltypes.MsgCh
err = cbs.OnChanUpgradeAck(cacheCtx, msg.PortId, msg.ChannelId, msg.CounterpartyUpgrade.Fields.Version)
if err != nil {
ctx.Logger().Error("channel upgrade ack callback failed", "port-id", msg.PortId, "channel-id", msg.ChannelId, "error", err.Error())
if err := k.ChannelKeeper.AbortUpgrade(ctx, msg.PortId, msg.ChannelId, err); err != nil {
return nil, errorsmod.Wrapf(err, "channel upgrade ack callback (abort upgrade) failed for port ID: %s, channel ID: %s", msg.PortId, msg.ChannelId)
}
k.ChannelKeeper.MustAbortUpgrade(ctx, msg.PortId, msg.ChannelId, err)

return &channeltypes.MsgChannelUpgradeAckResponse{Result: channeltypes.FAILURE}, nil
}
Expand Down