Instead of having a routing database, and an addresses database,
consolidate that in a single database called `node.db`.
We also simplify database access, by providing a single type for opening
the database, and use traits to access the various functions.
We create a new `seed::Store` that has seed-related methods split out of
the `address::Store`.
Note that tracking is still in its own database currently, as it isn't
ephemeral state. This makes it easy to delete the new `node.db` without
risk of losing any important information.
To avoid renaming all database methods, we create a `Stores` wrapper
that allows us to access routing, addresses, seeds etc. without type
ambiguity.
This is a breaking change and requires `addresses.db` and `routing.db`
to be deleted.
Currently, if refs are updated while the node is stopped, these refs are
not immediately announced when the node starts, due to the node being
unaware of the updates.
To remedy this, on startup, we compare the refs we have in storage with
the refs we announced to the network. Since only our own refs could have
changed while the node was stopped, this change only applies to owned
refs. If we detect that storage has changed while the node was stopped,
we create ref announcements for the updated repos and store them in our
gossip database. These announcements will be included with other
historical gossip announcements when nodes connect to us.
To keep track of what was announced, we store our local node's sync
status in the database. This is also useful when using the `rad sync status`
command, as it tells us what oid our local node is at, and whether it
is aware of our local changes yet.
In addition to this, we make a small fix: previously, inventory and ref
announcements originating from our local node were not stored in the
announcement database. We ensure that they are via the new `announce`
method.
Previously, we would process any valid inventory or refs announcement.
This could cause problems for keeping sync statuses, as we could get
a refs announcement from a node that isn't in our database.
In practice, there is no good reason why we should receive a refs or
inventory announcement before the announcer's node announcement, unless
nodes are not following the protocol.
Implementing this change meant that many of the tests needed updating,
as it wasn't assumed that a node announcement was needed before
receiving inventories etc. from a peer.
We also had to implement a basic form of node address banning to make
the tests pass after this change.
We add the necessary database table to keep track of which node has
synced which of our repos. This will be useful for giving the user
information on the sync status of every local repository.
Instead of storing received gossip messages in an in-memory `BTreeMap`,
we persist them to the database (`addresses.db`). There are two reasons
for this:
1. Node restarts do not wipe the state, meaning that it is much less
likely that some gossip message will get lost before reaching all
nodes.
2. This will allow us in the next commit to know how far behind we are
after a restart, to be able to request the correct time range of
gossip messages that we missed while offline.
Note that we now share the addresses.db file between two connections and
stores, which we don't do anywhere else. Having multiple connections to
the same database is fine, but the way we're having to do it is a bit
awkward. In a future patch, we could pull out the database schema from the
`address` module and rename the database to make things clearer.
This is a fairly substantial change, which adds a new configuration file
to the user's `$RAD_HOME` that includes node configuration, including
the alias, and also makes node aliases required.
When running `rad auth`, the user is now prompted for an alias, which
defaults to `$USER`.
When running `rad self`, the alias is now shown.
If the user runs radicle without a config file, the defaults are loaded,
and `$USER` is used as the alias.
Previously, we only sent the announcement when there were external
addresses. But it contains other information like the node alias,
therefore we always send it.
Since the proof-of-work can be expensive to compute everytime, we add
the ability to load the local node announcement from the file system.
We also change the proof-of-work parameters so that they are relaxed
when running in debug mode, instead of when running tests.
Finally, we remove the boolean validation of the PoW. Instead, we store
the work per-node, in the database, to be used in the future in case of
DoS attacks or network congestion.
cloudhead
Alexis Sellier
xphoniex