When a graph is joined, the subscriber receives an %add-graph update
that corresponds to the current state of the graph. This was not logged,
so if the graph did not recieve any updates before the subscription was
kicked, the whole graph would be have to be sent again. This would be
largely asymptomatic, however hark-store assumes that %add-graph will
only be emitted when a new graph is joined or created. As such, we log
this initial update, so that the push-hook can correctly ascertain the
backlog it needs to send and so %add-graph is only emitted once per
graph. This also opens the door for time-varying scries into
graph-store.
Fixes#4290
Ensure that the resource from the wire, the resource for the update
match up. Also ensure that the source ship and the ship that is being
pulled from for the resource match up. Without this, a host of a graph
could send updates for graphs that they do not hosts, and these would be
unconditionally forwarded, allowing malicious hosts to overwrite graphs
that they do not host.
Hark, when calculating unread totals was ignoring notifications that
were under the same stats-index, but a different index. Reworks the
cache to calculate unread totals correctly.
Scrapes groups and graphs for member counts and recent activity respectively,
and uses that to print out a "tally" of activity for all local groups and their
channels. Since this output is intended to be shared with other parties,
anonymizes resource identifiers by default.
When %remove-nodes is sent as an update, it may refer to a parent node,
in which case the deletion of all the parent's children is implied. If
we hold onto references to nodes outside of graph-store, we are unable
to tell which of our references were affected, other than iterating over
every reference to check if one of the deleted indices is a prefix of
the reference. This is obviously undesirable, so we emit all of the
nodes we deleted, including the nodes deleted implicitly.
Creates a noun poke %fix-dangling, which iterates through the unreads
and dismiss those which refer to nodes which no longer exist.
Additionally, adds a migration which runs this poke.
