ricochet-go/backend/rpc.go

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package main
import (
"errors"
ricochet "github.com/special/notricochet/core"
rpc "github.com/special/notricochet/rpc"
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"golang.org/x/net/context"
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"log"
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)
var NotImplementedError error = errors.New("Not implemented")
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type RpcServer struct {
core *ricochet.Ricochet
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}
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func (s *RpcServer) GetServerStatus(ctx context.Context, req *rpc.ServerStatusRequest) (*rpc.ServerStatusReply, error) {
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if req.RpcVersion != 1 {
return nil, errors.New("Unsupported RPC protocol version")
}
return &rpc.ServerStatusReply{
RpcVersion: 1,
ServerVersion: "0.0.0",
}, nil
}
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func (s *RpcServer) MonitorNetwork(req *rpc.MonitorNetworkRequest, stream rpc.RicochetCore_MonitorNetworkServer) error {
events := s.core.Network.EventMonitor().Subscribe(20)
defer s.core.Network.EventMonitor().Unsubscribe(events)
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// Send initial status event
{
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event := s.core.Network.GetStatus()
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if err := stream.Send(&event); err != nil {
return err
}
}
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for {
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event, ok := (<-events).(rpc.NetworkStatus)
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if !ok {
break
}
log.Printf("RPC monitor event: %v", event)
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if err := stream.Send(&event); err != nil {
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return err
}
}
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return nil
}
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func (s *RpcServer) StartNetwork(ctx context.Context, req *rpc.StartNetworkRequest) (*rpc.NetworkStatus, error) {
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// err represents the result of the first connection attempt, but as long
// as 'ok' is true, the network has started and this call was successful.
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ok, err := s.core.Network.Start("tcp://127.0.0.1:9051", "")
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if !ok {
return nil, err
}
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status := s.core.Network.GetStatus()
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return &status, nil
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}
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func (s *RpcServer) StopNetwork(ctx context.Context, req *rpc.StopNetworkRequest) (*rpc.NetworkStatus, error) {
s.core.Network.Stop()
status := s.core.Network.GetStatus()
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return &status, nil
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}
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func (s *RpcServer) GetIdentity(ctx context.Context, req *rpc.IdentityRequest) (*rpc.Identity, error) {
reply := rpc.Identity{
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Address: s.core.Identity.Address(),
}
return &reply, nil
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}
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func (s *RpcServer) MonitorContacts(req *rpc.MonitorContactsRequest, stream rpc.RicochetCore_MonitorContactsServer) error {
monitor := s.core.Identity.ContactList().EventMonitor().Subscribe(20)
defer s.core.Identity.ContactList().EventMonitor().Unsubscribe(monitor)
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// Populate
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contacts := s.core.Identity.ContactList().Contacts()
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for _, contact := range contacts {
event := &rpc.ContactEvent{
Type: rpc.ContactEvent_POPULATE,
Subject: &rpc.ContactEvent_Contact{
Contact: contact.Data(),
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},
}
if err := stream.Send(event); err != nil {
return err
}
}
// Terminate populate list with a null subject
{
event := &rpc.ContactEvent{
Type: rpc.ContactEvent_POPULATE,
}
if err := stream.Send(event); err != nil {
return err
}
}
for {
event, ok := (<-monitor).(rpc.ContactEvent)
if !ok {
break
}
log.Printf("Contact event: %v", event)
if err := stream.Send(&event); err != nil {
return err
}
}
return nil
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}
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func (s *RpcServer) AddContactRequest(ctx context.Context, req *rpc.ContactRequest) (*rpc.Contact, error) {
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return nil, NotImplementedError
}
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func (s *RpcServer) UpdateContact(ctx context.Context, req *rpc.Contact) (*rpc.Contact, error) {
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return nil, NotImplementedError
}
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func (s *RpcServer) DeleteContact(ctx context.Context, req *rpc.DeleteContactRequest) (*rpc.DeleteContactReply, error) {
contactList := s.core.Identity.ContactList()
contact := contactList.ContactByAddress(req.Address)
if contact == nil || (req.Id != 0 && contact.Id() != int(req.Id)) {
return nil, errors.New("Contact not found")
}
if err := contactList.RemoveContact(contact); err != nil {
return nil, err
}
return &rpc.DeleteContactReply{}, nil
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}
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func (s *RpcServer) AcceptInboundRequest(ctx context.Context, req *rpc.ContactRequest) (*rpc.Contact, error) {
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return nil, NotImplementedError
}
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func (s *RpcServer) RejectInboundRequest(ctx context.Context, req *rpc.ContactRequest) (*rpc.RejectInboundRequestReply, error) {
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return nil, NotImplementedError
}
func (s *RpcServer) MonitorConversations(req *rpc.MonitorConversationsRequest, stream rpc.RicochetCore_MonitorConversationsServer) error {
// XXX Technically there is a race between starting to monitor
// and the list and state of messages used to populate, that could
// result in duplicate messages or other weird behavior.
// Same problem exists for other places this pattern is used.
monitor := s.core.Identity.ConversationStream.Subscribe(100)
defer s.core.Identity.ConversationStream.Unsubscribe(monitor)
{
// Populate with existing conversations
contacts := s.core.Identity.ContactList().Contacts()
for _, contact := range contacts {
messages := contact.Conversation().Messages()
for _, message := range messages {
event := rpc.ConversationEvent{
Type: rpc.ConversationEvent_POPULATE,
Msg: message,
}
if err := stream.Send(&event); err != nil {
return err
}
}
}
// End population with an empty populate event
event := rpc.ConversationEvent{
Type: rpc.ConversationEvent_POPULATE,
}
if err := stream.Send(&event); err != nil {
return err
}
}
for {
event, ok := (<-monitor).(rpc.ConversationEvent)
if !ok {
break
}
if err := stream.Send(&event); err != nil {
return err
}
}
return nil
}
func (s *RpcServer) SendMessage(ctx context.Context, req *rpc.Message) (*rpc.Message, error) {
if req.Sender == nil || !req.Sender.IsSelf {
return nil, errors.New("Invalid message sender")
} else if req.Recipient == nil || req.Recipient.IsSelf {
return nil, errors.New("Invalid message recipient")
}
contact := s.core.Identity.ContactList().ContactByAddress(req.Recipient.Address)
if contact == nil || (req.Recipient.ContactId != 0 && int32(contact.Id()) != req.Recipient.ContactId) {
return nil, errors.New("Unknown recipient")
}
// XXX timestamp
// XXX validate text
// XXX identifier
message, err := contact.Conversation().Send(req.Text)
if err != nil {
return nil, err
}
return message, nil
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}
func (s *RpcServer) MarkConversationRead(ctx context.Context, req *rpc.MarkConversationReadRequest) (*rpc.Reply, error) {
if req.Entity == nil || req.Entity.IsSelf {
return nil, errors.New("Invalid entity")
}
contact := s.core.Identity.ContactList().ContactByAddress(req.Entity.Address)
if contact == nil || (req.Entity.ContactId != 0 && int32(contact.Id()) != req.Entity.ContactId) {
return nil, errors.New("Unknown entity")
}
contact.Conversation().MarkReadBeforeMessage(req.LastRecvIdentifier)
return &rpc.Reply{}, nil
}