//
// Gossip
//
private static Proto.Msg.Gossip GossipToProto(Gossip gossip)
{
var allMembers = gossip.Members.ToList();
var allAddresses = gossip.Members.Select(x => x.UniqueAddress).ToList();
var addressMapping = allAddresses.ZipWithIndex();
var allRoles = allMembers.Aggregate(ImmutableHashSet.Create <string>(), (set, member) => set.Union(member.Roles));
var roleMapping = allRoles.ZipWithIndex();
var allHashes = gossip.Version.Versions.Keys.Select(x => x.ToString()).ToList();
var hashMapping = allHashes.ZipWithIndex();
var allAppVersions = allMembers.Select(i => i.AppVersion.Version).ToImmutableHashSet();
var appVersionMapping = allAppVersions.ZipWithIndex();
int MapUniqueAddress(UniqueAddress address) => MapWithErrorMessage(addressMapping, address, "address");
int MapAppVersion(AppVersion appVersion) => MapWithErrorMessage(appVersionMapping, appVersion.Version, "appVersion");
Proto.Msg.Member MemberToProto(Member m)
{
var protoMember = new Proto.Msg.Member();
protoMember.AddressIndex = MapUniqueAddress(m.UniqueAddress);
protoMember.UpNumber = m.UpNumber;
protoMember.Status = (Proto.Msg.Member.Types.MemberStatus)m.Status;
protoMember.RolesIndexes.AddRange(m.Roles.Select(s => MapWithErrorMessage(roleMapping, s, "role")));
protoMember.AppVersionIndex = MapAppVersion(m.AppVersion);
return(protoMember);
}
var reachabilityProto = ReachabilityToProto(gossip.Overview.Reachability, addressMapping);
var membersProtos = gossip.Members.Select((Func <Member, Proto.Msg.Member>)MemberToProto);
var seenProtos = gossip.Overview.Seen.Select((Func <UniqueAddress, int>)MapUniqueAddress);
var overview = new Proto.Msg.GossipOverview();
overview.Seen.AddRange(seenProtos);
overview.ObserverReachability.AddRange(reachabilityProto);
var message = new Proto.Msg.Gossip();
message.AllAddresses.AddRange(allAddresses.Select(UniqueAddressToProto));
message.AllRoles.AddRange(allRoles);
message.AllHashes.AddRange(allHashes);
message.Members.AddRange(membersProtos);
message.Overview = overview;
message.Version = VectorClockToProto(gossip.Version, hashMapping);
message.AllAppVersions.AddRange(allAppVersions);
return(message);
}
private static Gossip GossipFrom(Proto.Msg.Gossip gossip)
{
var addressMapping = gossip.AllAddresses.Select(UniqueAddressFrom).ToList();
var roleMapping = gossip.AllRoles.ToList();
var hashMapping = gossip.AllHashes.ToList();
Member MemberFromProto(Proto.Msg.Member member) =>
Member.Create(
addressMapping[member.AddressIndex],
member.UpNumber,
(MemberStatus)member.Status,
member.RolesIndexes.Select(x => roleMapping[x]).ToImmutableHashSet());
var members = gossip.Members.Select((Func <Proto.Msg.Member, Member>)MemberFromProto).ToImmutableSortedSet(Member.Ordering);
var reachability = ReachabilityFromProto(gossip.Overview.ObserverReachability, addressMapping);
var seen = gossip.Overview.Seen.Select(x => addressMapping[x]).ToImmutableHashSet();
var overview = new GossipOverview(seen, reachability);
return(new Gossip(members, overview, VectorClockFrom(gossip.Version, hashMapping)));
}
