finished? tui client efficient streams. Compiled but not tested

3 years ago · 68aa34ee0d
parent 533e0325aa
commit 68aa34ee0d
8 changed files with 322 additions and 297 deletions
--- a/internal/pkg/grpc/management.pb.go
+++ b/internal/pkg/grpc/management.pb.go
@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.27.1
+// 	protoc-gen-go v1.28.0
 // 	protoc        v3.6.1
 // source: internal/pkg/grpc/management.proto

@ -27,6 +27,7 @@ type GetDevicesRequest struct {

 	ClientId  uint32 `protobuf:"varint,1,opt,name=clientId,proto3" json:"clientId,omitempty"`
 	ReactorId uint32 `protobuf:"varint,2,opt,name=reactorId,proto3" json:"reactorId,omitempty"` // if unspecified, don't return any devs
+	Refresh   bool   `protobuf:"varint,3,opt,name=refresh,proto3" json:"refresh,omitempty"`
 }

 func (x *GetDevicesRequest) Reset() {
@ -75,6 +76,13 @@ func (x *GetDevicesRequest) GetReactorId() uint32 {
 	return 0
 }

+func (x *GetDevicesRequest) GetRefresh() bool {
+	if x != nil {
+		return x.Refresh
+	}
+	return false
+}
+
 type GetDevicesResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@ -474,71 +482,73 @@ var File_internal_pkg_grpc_management_proto protoreflect.FileDescriptor
 var file_internal_pkg_grpc_management_proto_rawDesc = []byte{
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+	0x0a, 0x05, 0x69, 0x6e, 0x64, 0x65, 0x78, 0x18, 0x05, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x05, 0x69,
+	0x6e, 0x64, 0x65, 0x78, 0x32, 0xf3, 0x01, 0x0a, 0x0a, 0x6d, 0x61, 0x6e, 0x61, 0x67, 0x65, 0x6d,
+	0x65, 0x6e, 0x74, 0x12, 0x3f, 0x0a, 0x0a, 0x47, 0x65, 0x74, 0x44, 0x65, 0x76, 0x69, 0x63, 0x65,
+	0x73, 0x12, 0x17, 0x2e, 0x67, 0x72, 0x70, 0x63, 0x2e, 0x47, 0x65, 0x74, 0x44, 0x65, 0x76, 0x69,
+	0x63, 0x65, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x18, 0x2e, 0x67, 0x72, 0x70,
+	0x63, 0x2e, 0x47, 0x65, 0x74, 0x44, 0x65, 0x76, 0x69, 0x63, 0x65, 0x73, 0x52, 0x65, 0x73, 0x70,
+	0x6f, 0x6e, 0x73, 0x65, 0x12, 0x48, 0x0a, 0x0d, 0x44, 0x65, 0x6c, 0x65, 0x74, 0x65, 0x52, 0x65,
+	0x61, 0x63, 0x74, 0x6f, 0x72, 0x12, 0x1a, 0x2e, 0x67, 0x72, 0x70, 0x63, 0x2e, 0x44, 0x65, 0x6c,
+	0x65, 0x74, 0x65, 0x52, 0x65, 0x61, 0x63, 0x74, 0x6f, 0x72, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73,
+	0x74, 0x1a, 0x1b, 0x2e, 0x67, 0x72, 0x70, 0x63, 0x2e, 0x44, 0x65, 0x6c, 0x65, 0x74, 0x65, 0x52,
+	0x65, 0x61, 0x63, 0x74, 0x6f, 0x72, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x5a,
+	0x0a, 0x13, 0x44, 0x65, 0x6c, 0x65, 0x74, 0x65, 0x52, 0x65, 0x61, 0x63, 0x74, 0x6f, 0x72, 0x44,
+	0x65, 0x76, 0x69, 0x63, 0x65, 0x12, 0x20, 0x2e, 0x67, 0x72, 0x70, 0x63, 0x2e, 0x44, 0x65, 0x6c,
+	0x65, 0x74, 0x65, 0x52, 0x65, 0x61, 0x63, 0x74, 0x6f, 0x72, 0x44, 0x65, 0x76, 0x69, 0x63, 0x65,
+	0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x21, 0x2e, 0x67, 0x72, 0x70, 0x63, 0x2e, 0x44,
+	0x65, 0x6c, 0x65, 0x74, 0x65, 0x52, 0x65, 0x61, 0x63, 0x74, 0x6f, 0x72, 0x44, 0x65, 0x76, 0x69,
+	0x63, 0x65, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x42, 0x13, 0x5a, 0x11, 0x69, 0x6e,
+	0x74, 0x65, 0x72, 0x6e, 0x61, 0x6c, 0x2f, 0x70, 0x6b, 0x67, 0x2f, 0x67, 0x72, 0x70, 0x63, 0x62,
+	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }

 var (
--- a/internal/pkg/grpc/management.proto
+++ b/internal/pkg/grpc/management.proto
@ -12,6 +12,7 @@ service management {
 message GetDevicesRequest {
    uint32 clientId = 1;
    uint32 reactorId = 2;           // if unspecified, don't return any devs
+    bool refresh = 3;
 }

 message GetDevicesResponse {
--- a/internal/pkg/server/reactormanager.go
+++ b/internal/pkg/server/reactormanager.go
@ -18,7 +18,6 @@ import (
 type ReactorManager struct {
    *Manager
    StatusMon *StatusMonitor
-    DevsMon *StatusMonitor
    *devstatus
 }

@ -32,17 +31,14 @@ func NewReactorManager(c *Client,sys *SystemViewer,err chan error) GeneralManage
    di := make(map[uint32]*DeviceInfo)
    r.devstatus = &devstatus{Devs:di}
    r.Manager = NewManager(err)
-    r.StatusMon = sys.AddReactorSender()
-    r.DevsMon = sys.AddDeviceSender(c.Id)
+    r.StatusMon = NewStatusMonitor("Reactor",c.Id,sys)
    return r
 }

 func (r *ReactorManager) Start(cl *Client) {
    r.Manager.Start(cl)
    logging.Debug(logging.DStart,"RMA %v starting", r.Id)
-    go r.StatusMon.Start()
-    go r.DevsMon.Start()
-    go r.StatusMon.Send(&DeviceInfo{Id:r.Id,Type:"Reactor",Status:"[green]ONLINE[white]"})
+    go r.StatusMon.Send(&DeviceInfo{Id:r.Id,Type:"Reactor",Status:"[green]ONLINE[white]"},"Reactor")
    conn := r.Connect()
    empty := &grpc.ClientConn{}
    if conn != empty {
@ -53,7 +49,7 @@ func (r *ReactorManager) Start(cl *Client) {
 func (r *ReactorManager) Exit() {
    r.Manager.Exit()
    logging.Debug(logging.DExit, "RMA %v exiting", r.Id)
-    go r.StatusMon.Send(&DeviceInfo{Id:r.Id,Type:"Reactor",Status:"[red]OFFLINE[white]",Data:fmt.Sprintf("Last Seen %v",time.Now().Format("Mon at 03:04:05pm MST"))})
+    go r.StatusMon.Send(&DeviceInfo{Id:r.Id,Type:"Reactor",Status:"[red]OFFLINE[white]",Data:fmt.Sprintf("Last Seen %v",time.Now().Format("Mon at 03:04:05pm MST"))},"Reactor")
 }

 func (r *ReactorManager) GetPort() int {
@ -109,7 +105,7 @@ func (r *ReactorManager) Monitor(conn *grpc.ClientConn) {
                newd := d
                newd.Status = "[yellow]UNKOWN[white]"
                r.Devs[newd.Id] = newd
-                go r.DevsMon.Send(newd)
+                go r.StatusMon.Send(newd,"Device")
            }
            r.devstatus.Unlock()
            r.Exit()
@ -134,10 +130,10 @@ func (r *ReactorManager) UpdateDevice(d *DeviceInfo) {
    if olddev, ok := r.Devs[d.Id]; !ok {
        // new device
        r.Devs[d.Id] = d
-        go r.DevsMon.Send(d)
+        go r.StatusMon.Send(d,"Device")
    } else if olddev.Status != d.Status || olddev.Data != d.Data {
            // dev status or data has changed
        r.Devs[d.Id] = d
-        go r.DevsMon.Send(d)
+        go r.StatusMon.Send(d,"Device")
    }
 }
--- a/internal/pkg/server/system.go
+++ b/internal/pkg/server/system.go
@ -2,11 +2,9 @@ package server

 import (
    "sync"
-    _ "fmt"
+    "fmt"
    "FRMS/internal/pkg/logging"
 )
-
-// package will create and maintain a concurrent system structure
 // allows for multiple readers/writers
 type DeviceInfo struct {
    Id uint32
@ -17,12 +15,130 @@ type DeviceInfo struct {
    TransactionId uint32
 }

-func NewStatusMonitor(ch chan *DeviceInfo) *StatusMonitor {
+type StatusMonitor struct {
+    // allows for embedding into managers
+    TransactionId chan uint32 // monotonically increases to track outdated reqs
+    DevChan chan *DeviceInfo // channel for device status
+    ReactorChan chan *DeviceInfo // channel for reactor status
+    *SystemViewer
+    DevBuf *devbuf
+    sync.Mutex
+}
+
+type devbuf struct {
+    ReactorId uint32 // reactor we are looking at, if any
+    Buf map[string]map[uint32]*DeviceInfo // convienent way to store/seperate device data
+    sync.Mutex
+}
+
+func NewBuffer() map[string]map[uint32]*DeviceInfo {
+    rbuf := make(map[uint32]*DeviceInfo)
+    dbuf := make(map[uint32]*DeviceInfo)
+    sbuf := make(map[string]map[uint32]*DeviceInfo)
+    sbuf["Reactor"] = rbuf
+    sbuf["Device"] = dbuf
+    return sbuf
+}
+
+func NewStatusMonitor(t string, id uint32, sys *SystemViewer) *StatusMonitor {
    tid := make(chan uint32)
-    sm := &StatusMonitor{StatusChan:ch,TransactionId:tid}
+    sm := &StatusMonitor{TransactionId:tid}
+    sm.SystemViewer = sys
+    if t == "Reactor" {
+        // reactor status monitor
+        sm.ReactorChan = sys.AddReactorSender()
+        sm.DevChan = sys.AddDeviceSender(id)
+        go sm.GenerateIds()
+    } else {
+        // tui status monitor
+        sbuf := NewBuffer()
+        sm.ReactorChan, sbuf["Reactor"] = sys.AddListener(id,0)
+        sm.DevBuf = &devbuf{Buf:sbuf} // makes it easier to work with
+        go sm.Listen(sm.ReactorChan)
+    }
    return sm
 }

+func (s *StatusMonitor) GenerateIds() {
+    var id uint32
+    id = 0
+    for {
+        s.TransactionId <-id
+        id += 1
+    }
+}
+
+func (s *StatusMonitor) Send(d *DeviceInfo, dtype string) {
+    d.TransactionId = <-s.TransactionId
+    logging.Debug(logging.DClient,"SYS 01 Updating %s Info (%s, %s)", d.Type, d.Status, d.Data)
+    if dtype == "Reactor" {
+        s.ReactorChan <-d
+    } else {
+        s.DevChan <-d
+    }
+}
+
+func (s *StatusMonitor) GetBuffer() []*DeviceInfo {
+    // also clears buffer
+    s.DevBuf.Lock()
+    defer s.DevBuf.Unlock()
+    res := []*DeviceInfo{}
+    for _, devs := range s.DevBuf.Buf {
+        for _, dev := range devs {
+            // loops over reactors then devices
+            res = append(res,dev)
+        }
+    }
+    s.DevBuf.Buf = NewBuffer() // clearing old buffer
+    return res
+}
+
+func (s *StatusMonitor) UpdateListener(tid, reactorId uint32) {
+    s.DevBuf.Lock()
+    defer s.DevBuf.Unlock()
+    // clearing proper buffer
+    if reactorId == 0 {
+        s.DevBuf.Buf["Reactors"] = make(map[uint32]*DeviceInfo)
+        s.ReactorChan, s.DevBuf.Buf["Reactors"] = s.SystemViewer.AddListener(tid, reactorId)
+        go s.Listen(s.ReactorChan)
+    } else {
+        s.DevBuf.Buf["Devices"] = make(map[uint32]*DeviceInfo) // clearing old devices
+        if s.DevBuf.ReactorId != reactorId {
+            go s.SystemViewer.RemoveListener(s.DevBuf.ReactorId, tid)
+        }
+        s.DevBuf.ReactorId = reactorId
+        s.DevChan, s.DevBuf.Buf["Devices"] = s.SystemViewer.AddListener(tid, reactorId)
+        go s.Listen(s.DevChan)
+    }
+}
+
+func (s *StatusMonitor) UpdateBuffer(d *DeviceInfo, dtype string, ch chan *DeviceInfo) {
+    s.DevBuf.Lock()
+    defer s.DevBuf.Unlock()
+    if dev, exists := s.DevBuf.Buf[dtype][d.Id]; exists {
+        // already a device in the buffer
+            fmt.Printf("Old: %v,\nNew: %v \n", dev, d)
+        if dev.TransactionId > d.TransactionId {
+            d = dev // not sure if i can do this lol
+            fmt.Printf("Old: %v,\nNew: %v \n", dev, d)
+        }
+    }
+    if ch == s.ReactorChan || ch == s.DevChan {
+        // hacky way to check if the device came from a listener of a current channel
+        s.DevBuf.Buf[dtype][d.Id] = d
+    }
+}
+
+func (s *StatusMonitor) Listen(ch chan *DeviceInfo) {
+    for dev := range ch {
+        if dev.Type == "Reactor" {
+            go s.UpdateBuffer(dev,"Reactor", ch)
+        } else {
+            go s.UpdateBuffer(dev, "Device", ch)
+        }
+    }
+}
+
 type InfoStream struct {
    // base stream for any reactor/device
    // NewSender embedds the channel to send updates on
@ -39,7 +155,8 @@ type listeners struct {

 type lischan struct {
    sync.WaitGroup
-    *StatusMonitor
+    WaitChan chan struct{}
+    StatusChan chan *DeviceInfo
 }

 type syslayout struct {
@ -59,15 +176,14 @@ func NewInfoStream() *InfoStream {

 func (s *InfoStream) Start() {
    // consistency
-    go s.Listener()
+    go s.Listen()
 }
 // goal is to hook every new manager into the reactor status chan
-func (s *InfoStream) AddSender() *StatusMonitor {
-    sm := NewStatusMonitor(s.Stream) // give the channel we monitor for incoming updates
-    return sm
+func (s *InfoStream) AddSender() chan *DeviceInfo {
+    return s.Stream
 }

-func (s *InfoStream) Listener() {
+func (s *InfoStream) Listen() {
    for {
        deviceInfo := <-s.Stream
        go s.Update(deviceInfo)
@ -87,7 +203,7 @@ func (s *InfoStream) Update(d *DeviceInfo) {
    go s.Echo(d)
 }

-func (l *listener) Echo(d *DeviceInfo) {
+func (l *listeners) Echo(d *DeviceInfo) {
    l.RLock()
    defer l.RUnlock()
    // read only lock
@ -100,80 +216,46 @@ func (l *listener) Echo(d *DeviceInfo) {
    }
 }

-func (s *InfoStream) AddListener(id uint32, ch chan *DeviceInfo) (map[uint32]*DeviceInfo, *StatusMonitor) {
-    s.listener.Lock()
-    s.Layout.Lock()
-    defer s.listner.Unlock()
-    defer s.Layout.Unlock()
-    if sm, ok l.listener.Listeners[id]; ok {
-        // listener already exists return nil
-        // going to delete and create a new one here just because f it
-        
-        return s.Layout.Devs, sm
-    } else {
-        ch := make(chan *DeviceInfo)
-        sm := NewStatusMonitor(ch)
-        s.listener.Listeners[id] = sm
-        return s.Layout.Devs, sm
+func (s *InfoStream) AddListener(id uint32, ch chan *DeviceInfo) map[uint32]*DeviceInfo {
+    // if i get a memory leak ill eat my shoe
+    s.listeners.Lock()
+    defer s.listeners.Unlock()
+    if lis, ok := s.listeners.Listeners[id]; ok {
+        // exists
+        go lis.Exit()
+        delete(s.listeners.Listeners,id)
    }
+    s.listeners.Listeners[id] = &lischan{StatusChan:ch}
+    s.Layout.RLock()
+    defer s.Layout.RUnlock()
+    return s.Layout.Devs
 }

-func (l *listener) RemoveListener(id uint32) error {
+func (l *listeners) RemoveListener(id uint32) {
    l.Lock()
    defer l.Unlock()
-    if lis, ok := l.Listeners[id]; !ok {
-        return errors.New("Listener doesn't exists!")
-    } else {
+    if lis, ok := l.Listeners[id]; ok {
+        go func(){
+            lis.Wait()
+            close(lis.WaitChan)
+        }()
        go lis.Exit()
        delete(l.Listeners,id)
    }
-    return nil
 }

 func (l *lischan) Exit() {
    for {
        select {
-        case ls.Wait():
-            l.StatusChan.Close()
+        case <-l.WaitChan:
+            close(l.StatusChan)
            break;
        case <-l.StatusChan:
            // dump buffer
        }
-}
-//func (s *InfoStream) GetLayout() map[uint32]*DeviceInfo {
-    //s.Layout.RLock()
-    //defer s.Layout.RUnlock()
-    //return s.Layout.Devs
-//}
-
-// status buffer maintaince
-type StatusMonitor struct {
-    // serve as base to embed in managers to send/receive device info
-    TransactionId chan uint32 // monotonically increases to track outdated reqs
-    StatusChan chan *DeviceInfo // sending reactor info in same fmt
-    sync.Mutex
-}
-
-func (s *StatusMonitor) Start() {
-    go s.GenerateIds()
-}
-
-func (s *StatusMonitor) GenerateIds() {
-    var id uint32
-    id = 0
-    for {
-        s.TransactionId <-id
-        id += 1
    }
 }
-
-func (s *StatusMonitor) Send(d *DeviceInfo) {
-    d.TransactionId = <-s.TransactionId
-    logging.Debug(logging.DClient,"SYS 01 Updating %s Info (%s, %s)", d.Type, d.Status, d.Data)
-    s.StatusChan <-d
-}
-
-// now to tie it all together
+// status buffer maintaince

 type SystemViewer struct {
    // stores system directory and provide methods to be embedded in managers
@ -183,7 +265,6 @@ type SystemViewer struct {

 type ds struct {
    Reactors map[uint32]*InfoStream //map from reactor id to its device info stream
-    Clients map[uint32]uint32 // maps tui ids to checked out reactor dev ids
    sync.Mutex
 }

@ -191,8 +272,7 @@ func NewSystemViewer() *SystemViewer {
    rs := NewInfoStream()
    s := &SystemViewer{ReactorStream:rs}
    m := make(map[uint32]*InfoStream)
-    c := make(map[uint32]uint32)
-    s.DeviceStream =  &ds{Reactors:m,Clients:c}
+    s.DeviceStream =  &ds{Reactors:m}
    return s
 }

@ -200,11 +280,11 @@ func (s *SystemViewer) Start() {
    go s.ReactorStream.Start()
 }

-func (s *SystemViewer) AddReactorSender() *StatusMonitor {
+func (s *SystemViewer) AddReactorSender() chan *DeviceInfo {
    return s.ReactorStream.AddSender()
 }

-func (s *SystemViewer) AddDeviceSender(reactorId uint32) *StatusMonitor {
+func (s *SystemViewer) AddDeviceSender(reactorId uint32) chan *DeviceInfo {
    s.DeviceStream.Lock()
    defer s.DeviceStream.Unlock()
    var ds *InfoStream
@ -217,40 +297,19 @@ func (s *SystemViewer) AddDeviceSender(reactorId uint32) *StatusMonitor {
    return ds.AddSender()
 }

-func (s *SystemViewer) AddListener(tid uint32, rid ...uint32) (map[uint32]*DeviceInfo, *StatusMonitor) {
-    // adds status monitor as a listener and returns any already stored dev
-    // id serves as client id and limits them to one of each
-    var rid uint32
-    if len(ids) == 1 {
-        rid = uint32(ids[0])
-    } else if len(ids) != 0{
-        logging.Debug(logging.DError, "Too many arguements given to Add Listener")
-        os.Exit(1)
-    }
-    // id is either 0 or reactor we are interested in
-    rstatus, sm := s.ReactorStream.AddListener(id)
-    if sm
-
-func (s *SystemViewer) GetBuffer(
-/*
-func (s *SystemViewer) GetReactorStatus() map[uint32]DeviceInfo {
-    devs := s.ReactorStream.GetLayout()
-    ret := make(map[uint32]DeviceInfo)
-    for id, dev := range devs {
-        ret[id] = *dev
+func (s *SystemViewer) AddListener(id, rid uint32) (chan *DeviceInfo, map[uint32]*DeviceInfo) {
+    // returns a listener for that chan
+    ch := make(chan *DeviceInfo)
+    if rid != 0 {
+        return ch, s.DeviceStream.Reactors[rid].AddListener(id, ch)
+    } else {
+        return ch, s.ReactorStream.AddListener(id, ch)
    }
-    return ret //value instead of ptr
 }

-func (s *SystemViewer) GetDeviceStatus(reactorId uint32) map[uint32]DeviceInfo {
+func (s *SystemViewer) RemoveListener(tid, rid uint32) {
+    // removes chan for specific tid and rid
    s.DeviceStream.Lock()
-    ds := s.DeviceStream.Reactors[reactorId]
-    s.DeviceStream.Unlock()
-    devs := ds.GetLayout()
-    ret := make(map[uint32]DeviceInfo)
-    for id, dev := range devs {
-        ret[id] = *dev
-    }
-    return ret
+    defer s.DeviceStream.Unlock()
+    go s.DeviceStream.Reactors[rid].RemoveListener(tid)
 }
-*/
--- a/internal/pkg/server/tuimanager.go
+++ b/internal/pkg/server/tuimanager.go
@ -18,19 +18,12 @@ type TUIManager struct {
    *Manager        // embedded manager for access to methods and client
    Ip string
    Port *port
-    DevsMon *StatusMonitor      // use it for all devs coming in
-    *SystemViewer
+    StatusMon *StatusMonitor      // use it for all devs coming in
    Err chan error
-    *DevBuffer
    *Timeout
    *pb.UnimplementedManagementServer
 }

-type DevBuffer struct {
-    Devs []map[uint32]*DeviceInfo
-    sync.Mutex
-}
-
 type Timeout struct {
    Alert chan bool
    LastSeen time.Time
@ -51,13 +44,7 @@ func NewTUIManager(ip string, c *Client, sys *SystemViewer, err chan error) Gene
    t.Timeout = &Timeout{Alert:alert,TO:time.Duration(2500*time.Millisecond)}   // short time outs are fine because we will just rejoin 
    t.Manager = m
    t.Ip = ip
-    mon, buf := sys.AddListener()
-    t.DevsMon = mon
-    t.SystemViewer = sys
-    t.DevBuffer = &DevBuffer{Devs:[2]map[uint32]*DeviceInfo{})}
-    t.DevBuffer[0] = make(map[uint32]*DeviceInfo)
-    t.DevBuffer[1] = make(map[uint32]*DeviceInfo) // maps for reactors and devs
-    go t.UpdateBuffer(buf)
+    t.StatusMon = NewStatusMonitor("TUI",t.Id,sys)
    return t
 }

@ -66,7 +53,6 @@ func (t *TUIManager) Start(cl *Client) {
    t.PingReset()
    t.Manager.Start(cl)
    logging.Debug(logging.DStart,"TMA %v starting", t.Id)
-    go t.DeviceListener()
    go t.Timeoutd()
    go t.Register() // begin tui server to respond to tui client reqs
    //go t.Monitor(conn)
@ -131,62 +117,16 @@ func (t *TUIManager) GetPort() int {
 }

 // tui client requests and logic will be down here
-func (t *TUIManager) DeviceListener() {
-    // called on start requests reactor info and buffers updates
-    for dev := range t.DevsMon.StatusChan {
-        go t.UpdateBuffer(dev)
-    }
-}
-
-func (d *DevBuffer) UpdateBuffer(dv *DeviceInfo) {
-    // TODO
-    // need a way to take incoming devices and only store most recent entry in the buffer
-    d.Lock()
-    defer d.Unlock()
-    if dv.Type == "Reactor" {
-        d.Devs[0][dv.Id] = dv
-    } else {
-        d.Devs[1][dv.Id] = dv
-    }
-}
-
-func (d *DevBuffer) EmptyBuffer() []*DeviceInfo {
-    // TODO
-    // need to grab the current buffer contents and empty them into the device reply
-    d.Lock()
-    defer d.Unlock()
-    ret := []*DeviceInfo{}
-    for _, mp := range d.Devs {
-        for _, dev := range mp {
-            ret = append(ret,dev)
-        }
-    }
-    d.Devs = []map[uint32]*DeviceInfo{}
-    return ret
-}
-
-func (t *TUIManager) AttachListener(id uint32) []*DeviceInfo {
-    // if a reactor is selected we need to
-    // empty the buffer
-    // get the dev info for the reactor
-    // add our devmon to the chan
-    

 func (t *TUIManager) GetDevices(ctx context.Context, req *pb.GetDevicesRequest) (*pb.GetDevicesResponse, error) {
    go t.PingReset()
-    // doing 2 things, clearing reactor buffer and either
-        // a) clearing dev buffer
-        // b) killing old dev listener and getting new buffer
-    rid := req.GetReactorId()
    devices := []*pb.Dev{}
-    resp := &pb.GetDevicesResponse{ClientId:t.Id,ReactorId:rid,Devices:devices}
-    var devs []*DeviceInfo
-    if rid != 0 {
-        // reactor requested
-        devs = t.AttachListener(rid)
-    } else {
-        devs = t.EmptyBuffer()
+    resp := &pb.GetDevicesResponse{ClientId:t.Id,Devices:devices}
+    if req.GetReactorId() > 0 || req.GetRefresh() {
+        resp.ReactorId = req.GetReactorId()
+        t.StatusMon.UpdateListener(t.Id, req.GetReactorId())
    }
+    devs := t.StatusMon.GetBuffer() // always empty buffer

    for _, v := range devs {
        resp.Devices = append(resp.Devices, &pb.Dev{Id:v.Id,Type:v.Type,Status:v.Status,Data:v.Data,Index:v.Index})
--- a/internal/pkg/tui/client.go
+++ b/internal/pkg/tui/client.go
@ -111,19 +111,16 @@ func (t *TUIClient) Connect() {
    }
 }

-// going to redo this idk wtf i was thinking
-
-// we just want a way to do two things
-// a) get all devices when we first select a reactor
-// b) ping the cs every 500ms-1s for updates and get back a list of devs that have changed
-
 func (t *TUIClient) GetDevices(id ...uint32) (map[uint32]*Device, error) {
    // returns
-    var rid uint32
-    if len(id) > 0 && id[0] != 0 {
-        rid = id[0]
+    req := &pb.GetDevicesRequest{ClientId:t.Id}
+    if len(id) > 0 {
+        if id[0] == 0 {
+            req.Refresh = true
+        } else {
+        req.ReactorId = id[0]
+        }
    }
-    req := &pb.GetDevicesRequest{ClientId:t.Id,ReactorId:rid}
    r := make(map[uint32]*Device)
    client := pb.NewManagementClient(t.ClientConn)
    resp, err := client.GetDevices(context.Background(), req)
--- a/internal/pkg/tui/tui.go
+++ b/internal/pkg/tui/tui.go
@ -23,7 +23,6 @@ type Device struct {

 type TUI struct {
    *Display
-    //*LocalView
    *TUIClient
    SelectedReactor <-chan uint32
    SelectedDevice <-chan uint32
@ -31,11 +30,7 @@ type TUI struct {
 }

 func NewTUI(ip string, port int, ifconfig string, ch chan error) *TUI {
-    //r := make(map[uint32]*Reactor)
    t := &TUI{}
-    //l := new(LocalView)
-    //l.Reactors = r
-    //t.LocalView = l
    t.Err = ch
    client := NewTUIClient(ip, port, ifconfig)
    t.TUIClient = client
@ -51,7 +46,6 @@ func (t *TUI) Start() {
    go t.Monitor()
    t.CreateDisplay()
    t.Display.Start()
-    //go t.Refresh()
 }

 func (t *TUI) CreateDisplay() {
@ -79,7 +73,6 @@ func (t *TUI) Monitor() {
        case reactor := <-t.SelectedReactor:
            // reactor has been selected in tui, grabbing devs
            t.App.QueueUpdateDraw(func() {
-                t.Display.DeviceList.Clear()
                t.UpdateDevices(reactor)
            })
            logging.Debug(logging.DClient, "%v getting reactor devices", t.Id)
@ -98,21 +91,26 @@ func (t *TUI) Monitor() {

 func (t *TUI) UpdateDevices(r ...uint32) {
    // get devices for the reactor and update the tui
-    var id uint32
    // see if there is a page being displayed
-    /*
-    if name, _ := t.Display.DevicePages.GetFrontPage(); name != "" {
-        if tmp, err := strconv.ParseUint(name, 10, 32); err != nil {
-            log.Fatal(err)
-        } else {
-            id = uint32(tmp)
-        }
-    }*/
    // overwrite if called as a func
+    var devs map[uint32]*Device
+    var err error
    if len(r) > 0 {
-        id = r[0]
+        // could be a reactor id or 1 for update reactors
+        if r[0] != 0 {
+            t.Display.DeviceList.Clear()
+        } else {
+            t.ReactorList.Clear()
+            t.ReactorList.AddItem("Refresh","Press (r) to refresh manually", 114, nil)
+            t.ReactorList.AddItem("Quit","Press (q) to quit",113,func() {
+                t.App.Stop()
+                os.Exit(0)
+            })
+        }
+        devs, err = t.TUIClient.GetDevices(r[0])
+    } else {
+        devs, err = t.TUIClient.GetDevices()
    }
-    devs, err := t.TUIClient.GetDevices(id)
    if err != nil {
        log.Fatal(err)
    }
@ -129,9 +127,6 @@ func (t *TUI) UpdateDevices(r ...uint32) {
    }
    t.DisplayDevices(devices)
    t.DisplayReactors(reactors)
-    // } else {
-    //    t.DisplayReactors(devs)
-    //}
 }

 // display struct and logic
@ -151,6 +146,7 @@ func NewDisplay(rc,dc chan uint32) *Display {
    d.Flex = tview.NewFlex()
    d.DeviceList = tview.NewList()
    d.ReactorList = tview.NewList()
+    d.ReactorList.AddItem("Refresh","Press (r) to refresh manually", 114, nil)
    d.ReactorList.AddItem("Quit","Press (q) to quit",113,func() {
        d.App.Stop()
        os.Exit(0)
@ -179,7 +175,7 @@ func (d *Display) DisplayReactors(r map[uint32]*Device) {
        indx := int(reactor.Index)
        for indx + 1 >= d.ReactorList.GetItemCount() {
            // this prevent overwriting quit entry
-            d.ReactorList.InsertItem(-2,txt,reactor.Data,rune(48+d.ReactorList.GetItemCount()),nil)
+            d.ReactorList.InsertItem(-3,txt,reactor.Data,rune(47+d.ReactorList.GetItemCount()),nil)
        }
        if indx + 1 < d.ReactorList.GetItemCount() {
            d.ReactorList.SetItemText(indx,txt,reactor.Data)
@ -201,31 +197,14 @@ func (d *Display) DisplayDevices(devs map[uint32]*Device) {
            d.DeviceList.SetItemText(indx,txt,dev.Data)
        }
    }
-    /*
-    reactorPage := strconv.FormatUint(uint64(rid), 10)
-    var reactorList *tview.List
-    var ok bool
-    if reactorList, ok = d.DeviceList[reactorPage]; !ok {
-        reactorList = tview.NewList()//.ShowSecondaryText(false)
-        d.DeviceList[reactorPage] = reactorList
-        d.DevicePages.AddPage(reactorPage, reactorList, true, false)
-    }
-    //d.Unlock()
-    for _, dev := range devs {
-        txt := fmt.Sprintf("0x%x %v %v",dev.Id,dev.Status,dev.Type) // sensor alive at 0x0 data
-        if reactorList.GetItemCount() > int(dev.Index) {
-            reactorList.RemoveItem(int(dev.Index))
-        }
-        reactorList.InsertItem(int(dev.Index),txt,dev.Data,0,nil)
-    }
-    d.DevicePages.SwitchToPage(reactorPage)
-    */
 }

-
 func (d *Display) SelectReactor(index int, main, data string, r rune) {
    // called when reactor in list in selected
    if main != "Quit" {
+        if main == "Refresh" {
+            // TODO
+        } else {
            maintxt := strings.Split(main," ")
            id := maintxt[0]
            if id, err := strconv.ParseUint(id, 10, 32); err != nil {
@ -234,6 +213,7 @@ func (d *Display) SelectReactor(index int, main, data string, r rune) {
                d.SelectedReactor <-uint32(id)
            }
        }
+    }
 }

 func (d *Display) SelectDevice(index int, main, data string, r rune) {
--- a/42
+++ b/42
@ -0,0 +1,42 @@
+alright time to do this correctly because this is brutal
+
+7/18
+DM -> RLC -> RM -> Sys -> TM -> TC
+this basic struct will guide us
+
+Work backwards to start from what the TC wants and work to how to deliver
+
+TC
+- wants to know what the overall reactor status are and the associated device status on selection
+- its OK if this is a bit out of date, but probably want a synchronized view between clients
+    - could be a performance hit but f it
+
+TM
+Needs to:
+- provide up to date information about the reactors connected and know which reactor is selected and provide updates for it
+Relies on
+- Needs a central struct, 2 methods for data
+    - call on request to query for ir
+    - keep its own copy and empty its buffer on request
+        - this is probably the best route
+
+So TM really needs an intermediate struct a sort of device buffer
+- I like the thing we had before with the channels and embedding but it needs to be fleshed out
+
+All of this resides on the server which we can use to our advantage
+Lets flesh out the TM a bit more
+
+TM sys struct
+this struct will attach itself to a channel and buffer updates for that channel
+has to have a few methods
+    - GetBuffer() returns any new entries and empties the buffer
+    - ListenTo(reactorID) starts listening to a reactor and returns any devices on that branch so the client can refresh its list
+    - Refresh() forces the client to get all reactors and devices if listening to any branch
+NewSysMonitor() has to return struct and current client status to load fortui client
+
+this client will be given to a TUI at creation
+
+TUI can then call associated commands to get updates for the client
+
+TM sys struct just relies on underlying sys implementation which seems to be working south of the RM so i am just going to work on this TM sys struct for now
+