func (dcmd *delCommand) Apply(server raft.Server) (interface{}, error) {
if server.Name() == server.Leader() {
return nil, nil
}
kvs := server.Context().(KVstore)
err := kvs.Delete(dcmd.Key)
return nil, err
}
// Apply implements goraft Command interface's Apply function
// It puts a key-value pair in KVstore
func (pcmd *putCommand) Apply(server raft.Server) (interface{}, error) {
if server.Name() == server.Leader() {
return nil, nil
}
kvs := server.Context().(KVstore)
err := kvs.Put(pcmd.Key, pcmd.Val)
return nil, err
}
func (c *InfluxChangeConnectionStringCommand) Apply(server raft.Server) (interface{}, error) {
if c.Name == server.Name() {
return nil, nil
}
server.RemovePeer(c.Name)
server.AddPeer(c.Name, c.ConnectionString)
clusterConfig := server.Context().(*cluster.ClusterConfiguration)
newServer := clusterConfig.GetServerByRaftName(c.Name)
// it's a new server the cluster has never seen, make it a potential
if newServer == nil {
return nil, fmt.Errorf("Server %s doesn't exist", c.Name)
}
newServer.RaftConnectionString = c.ConnectionString
newServer.ProtobufConnectionString = c.ProtobufConnectionString
server.Context().(*cluster.ClusterConfiguration).ChangeProtobufConnectionString(newServer)
server.FlushCommitIndex()
return nil, nil
}
func (c *ChangeDbUserPermissions) Apply(server raft.Server) (interface{}, error) {
log.Debug("(raft:%s) changing db user permissions for %s:%s", server.Name(), c.Database, c.Username)
config := server.Context().(*cluster.ClusterConfiguration)
return nil, config.ChangeDbUserPermissions(c.Database, c.Username, c.ReadPermissions, c.WritePermissions)
}
func (c *ChangeDbUserPassword) Apply(server raft.Server) (interface{}, error) {
log.Debug("(raft:%s) changing db user password for %s:%s", server.Name(), c.Database, c.Username)
config := server.Context().(*cluster.ClusterConfiguration)
return nil, config.ChangeDbUserPassword(c.Database, c.Username, c.Hash)
}
func (c *SaveDbUserCommand) Apply(server raft.Server) (interface{}, error) {
config := server.Context().(*cluster.ClusterConfiguration)
config.SaveDbUser(c.User)
log.Debug("(raft:%s) Created user %s:%s", server.Name(), c.User.Db, c.User.Name)
return nil, nil
}