mirror of
https://github.com/postmannen/ctrl.git
synced 2024-12-14 12:37:31 +00:00
565 lines
17 KiB
Go
565 lines
17 KiB
Go
package stew
|
|
|
|
import (
|
|
"bufio"
|
|
"encoding/json"
|
|
"fmt"
|
|
"log"
|
|
"os"
|
|
"reflect"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/RaaLabs/steward"
|
|
"github.com/gdamore/tcell/v2"
|
|
"github.com/rivo/tview"
|
|
)
|
|
|
|
func messageSlide(app *tview.Application) tview.Primitive {
|
|
type pageMessage struct {
|
|
flex *tview.Flex
|
|
msgInputForm *tview.Form
|
|
msgOutputForm *tview.TextView
|
|
logForm *tview.TextView
|
|
}
|
|
|
|
p := pageMessage{}
|
|
app = tview.NewApplication()
|
|
|
|
p.msgInputForm = tview.NewForm()
|
|
p.msgInputForm.SetBorder(true).SetTitle("Request values").SetTitleAlign(tview.AlignLeft)
|
|
|
|
p.msgOutputForm = tview.NewTextView()
|
|
p.msgOutputForm.SetBorder(true).SetTitle("Message output").SetTitleAlign(tview.AlignLeft)
|
|
p.msgOutputForm.SetChangedFunc(func() {
|
|
// Will cause the log window to be redrawn as soon as
|
|
// new output are detected.
|
|
app.Draw()
|
|
})
|
|
|
|
p.logForm = tview.NewTextView()
|
|
p.logForm.SetBorder(true).SetTitle("Log/Status").SetTitleAlign(tview.AlignLeft)
|
|
p.logForm.SetChangedFunc(func() {
|
|
// Will cause the log window to be redrawn as soon as
|
|
// new output are detected.
|
|
app.Draw()
|
|
})
|
|
|
|
// Create a flex layout.
|
|
//
|
|
// First create the outer flex layout.
|
|
p.flex = tview.NewFlex().SetDirection(tview.FlexRow).
|
|
// Add the top windows with columns.
|
|
AddItem(tview.NewFlex().SetDirection(tview.FlexColumn).
|
|
AddItem(p.msgInputForm, 0, 10, false).
|
|
AddItem(p.msgOutputForm, 0, 10, false),
|
|
0, 10, false).
|
|
// Add the bottom log window.
|
|
AddItem(tview.NewFlex().
|
|
AddItem(p.logForm, 0, 2, false),
|
|
0, 2, false)
|
|
|
|
// Check that the message struct used within stew are up to date, and
|
|
// consistent with the fields used in the main Steward message file.
|
|
// If it throws an error here we need to update the msg struct type,
|
|
// or add a case for the field to except.
|
|
err := compareMsgAndMessage()
|
|
if err != nil {
|
|
log.Printf("%v\n", err)
|
|
os.Exit(1)
|
|
}
|
|
|
|
m := msg{}
|
|
|
|
// Loop trough all the fields of the Message struct, and create
|
|
// a an input field or dropdown selector for each field.
|
|
// If a field of the struct is not defined below, it will be
|
|
// created a "no defenition" element, so it we can easily spot
|
|
// Message fields who miss an item in the form.
|
|
//
|
|
// INFO: The reason that reflect are being used here is to have
|
|
// a simple way of detecting that we are creating form fields
|
|
// for all the fields in the struct. If we have forgot'en one
|
|
// it will create a "no case" field in the console, to easily
|
|
// detect that a struct field are missing a defenition below.
|
|
|
|
mRefVal := reflect.ValueOf(m)
|
|
|
|
for i := 0; i < mRefVal.NumField(); i++ {
|
|
var err error
|
|
values := []string{"1", "2"}
|
|
|
|
fieldName := mRefVal.Type().Field(i).Name
|
|
|
|
switch fieldName {
|
|
case "ToNode":
|
|
// Get nodes from file.
|
|
values, err = getNodeNames("nodeslist.cfg")
|
|
if err != nil {
|
|
// TODO: Handle error here, exit ?
|
|
return nil
|
|
}
|
|
|
|
item := tview.NewDropDown()
|
|
item.SetLabelColor(tcell.ColorIndianRed)
|
|
item.SetLabel(fieldName).SetOptions(values, nil)
|
|
p.msgInputForm.AddFormItem(item)
|
|
//c.msgForm.AddDropDown(mRefVal.Type().Field(i).Name, values, 0, nil).SetItemPadding(1)
|
|
case "ID":
|
|
// This value is automatically assigned by steward.
|
|
case "Data":
|
|
value := `"bash","-c","..."`
|
|
p.msgInputForm.AddInputField(fieldName, value, 30, nil, nil)
|
|
case "Method":
|
|
var m steward.Method
|
|
ma := m.GetMethodsAvailable()
|
|
values := []string{}
|
|
for k := range ma.Methodhandlers {
|
|
values = append(values, string(k))
|
|
}
|
|
p.msgInputForm.AddDropDown(fieldName, values, 0, nil).SetItemPadding(1)
|
|
case "ReplyMethod":
|
|
var m steward.Method
|
|
rm := m.GetReplyMethods()
|
|
values := []string{}
|
|
for _, k := range rm {
|
|
values = append(values, string(k))
|
|
}
|
|
p.msgInputForm.AddDropDown(fieldName, values, 0, nil).SetItemPadding(1)
|
|
case "ACKTimeout":
|
|
value := 30
|
|
p.msgInputForm.AddInputField(fieldName, fmt.Sprintf("%d", value), 30, validateInteger, nil)
|
|
case "Retries":
|
|
value := 1
|
|
p.msgInputForm.AddInputField(fieldName, fmt.Sprintf("%d", value), 30, validateInteger, nil)
|
|
case "ReplyACKTimeout":
|
|
value := 30
|
|
p.msgInputForm.AddInputField(fieldName, fmt.Sprintf("%d", value), 30, validateInteger, nil)
|
|
case "ReplyRetries":
|
|
value := 1
|
|
p.msgInputForm.AddInputField(fieldName, fmt.Sprintf("%d", value), 30, validateInteger, nil)
|
|
case "MethodTimeout":
|
|
value := 120
|
|
p.msgInputForm.AddInputField(fieldName, fmt.Sprintf("%d", value), 30, validateInteger, nil)
|
|
case "Directory":
|
|
value := "/some-dir/"
|
|
p.msgInputForm.AddInputField(fieldName, value, 30, nil, nil)
|
|
case "FileName":
|
|
value := ".log"
|
|
p.msgInputForm.AddInputField(fieldName, value, 30, nil, nil)
|
|
case "Operation":
|
|
// Prepare the selectedFunc that will be triggered for the operations
|
|
// when a field in the dropdown is selected.
|
|
// This selectedFunc will generate the sub fields of the selected
|
|
// operation, and will also remove any previously drawn operation
|
|
// sub fields from the current form.
|
|
values := []string{"ps", "startProc", "stopProc"}
|
|
selectedFunc := func(option string, optionIndex int) {
|
|
|
|
// Prepare the map structure that knows what tview items the
|
|
// operation should contain.
|
|
// Then we can pick from this map later, to know what fields
|
|
// to draw, and also which fields to delete if another operation
|
|
// is selected from the dropdown.
|
|
|
|
type formItem struct {
|
|
label string
|
|
formItem tview.FormItem
|
|
}
|
|
|
|
operationFormItems := map[string][]formItem{}
|
|
|
|
operationFormItems["ps"] = nil
|
|
|
|
operationFormItems["startProc"] = func() []formItem {
|
|
formItems := []formItem{}
|
|
|
|
// Get values values to be used for the "Method" dropdown.
|
|
var m steward.Method
|
|
ma := m.GetMethodsAvailable()
|
|
values := []string{}
|
|
for k := range ma.Methodhandlers {
|
|
values = append(values, string(k))
|
|
}
|
|
|
|
// Create the individual form items, and append them to the
|
|
// formItems slice to be drawn later.
|
|
{
|
|
label := "startProc Method"
|
|
item := tview.NewDropDown()
|
|
item.SetLabel(label).SetOptions(values, nil).SetLabelWidth(25)
|
|
formItems = append(formItems, formItem{label: label, formItem: item})
|
|
}
|
|
|
|
return formItems
|
|
}()
|
|
|
|
operationFormItems["stopProc"] = func() []formItem {
|
|
formItems := []formItem{}
|
|
|
|
// RecevingNode node `json:"receivingNode"`
|
|
// Method Method `json:"method"`
|
|
// Kind processKind `json:"kind"`
|
|
// ID int `json:"id"`
|
|
|
|
// Get nodes from file.
|
|
values, err = getNodeNames("nodeslist.cfg")
|
|
if err != nil {
|
|
fmt.Fprintf(p.logForm, "%v: error: unable to get nodes\n", time.Now().Format("Mon Jan _2 15:04:05 2006"))
|
|
return nil
|
|
}
|
|
|
|
{
|
|
label := "stopProc ToNode"
|
|
item := tview.NewDropDown()
|
|
item.SetLabel(label).SetOptions(values, nil).SetLabelWidth(25)
|
|
formItems = append(formItems, formItem{label: label, formItem: item})
|
|
|
|
}
|
|
|
|
// Get values values to be used for the "Method" dropdown.
|
|
var m steward.Method
|
|
ma := m.GetMethodsAvailable()
|
|
values := []string{}
|
|
for k := range ma.Methodhandlers {
|
|
values = append(values, string(k))
|
|
}
|
|
|
|
// Create the individual form items, and append them to the
|
|
// formItems slice.
|
|
{
|
|
label := "stopProc Method"
|
|
item := tview.NewDropDown()
|
|
item.SetLabel(label).SetOptions(values, nil).SetLabelWidth(25)
|
|
formItems = append(formItems, formItem{label: label, formItem: item})
|
|
|
|
}
|
|
|
|
processKind := []string{"publisher", "subscriber"}
|
|
|
|
{
|
|
label := "stopProc processKind"
|
|
item := tview.NewDropDown()
|
|
item.SetLabel(label).SetOptions(processKind, nil).SetLabelWidth(25)
|
|
formItems = append(formItems, formItem{label: label, formItem: item})
|
|
|
|
}
|
|
|
|
{
|
|
label := "stopProc ID"
|
|
item := tview.NewInputField()
|
|
item.SetLabel(label).SetFieldWidth(30).SetLabelWidth(25)
|
|
formItems = append(formItems, formItem{label: label, formItem: item})
|
|
}
|
|
|
|
return formItems
|
|
}()
|
|
|
|
itemDraw := func(label string) {
|
|
// Delete previously drawn sub operation form items.
|
|
for _, vSlice := range operationFormItems {
|
|
for _, v := range vSlice {
|
|
i := p.msgInputForm.GetFormItemIndex(v.label)
|
|
if i > -1 {
|
|
p.msgInputForm.RemoveFormItem(i)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Get and draw the form items to the form.
|
|
formItems := operationFormItems[label]
|
|
for _, v := range formItems {
|
|
p.msgInputForm.AddFormItem(v.formItem)
|
|
}
|
|
}
|
|
|
|
switch option {
|
|
case "ps":
|
|
itemDraw("ps")
|
|
case "startProc":
|
|
itemDraw("startProc")
|
|
case "stopProc":
|
|
itemDraw("stopProc")
|
|
default:
|
|
fmt.Fprintf(p.logForm, "%v: error: missing menu item for %v\n", time.Now().Format("Mon Jan _2 15:04:05 2006"), option)
|
|
}
|
|
}
|
|
|
|
p.msgInputForm.AddDropDown(fieldName, values, 0, selectedFunc).SetItemPadding(1)
|
|
|
|
default:
|
|
// Add a no definition fields to the form if a a field within the
|
|
// struct were missing an action above, so we can easily detect
|
|
// if there is missing a case action for one of the struct fields.
|
|
p.msgInputForm.AddDropDown("error: no case for: "+fieldName, values, 0, nil).SetItemPadding(1)
|
|
}
|
|
|
|
}
|
|
|
|
// Add Buttons below the message fields. Like Generate and Exit.
|
|
p.msgInputForm.
|
|
// Add a generate button, which when pressed will loop through all the
|
|
// message form items, and if found fill the value into a msg struct,
|
|
// and at last write it to a file.
|
|
//
|
|
// TODO: Should also add a write directly to socket here.
|
|
AddButton("generate to console", func() {
|
|
// ---
|
|
opCmdStartProc := steward.OpCmdStartProc{}
|
|
opCmdStopProc := steward.OpCmdStopProc{}
|
|
// ---
|
|
|
|
// fh, err := os.Create("message.json")
|
|
// if err != nil {
|
|
// log.Fatalf("error: failed to create test.log file: %v\n", err)
|
|
// }
|
|
// defer fh.Close()
|
|
|
|
p.msgOutputForm.Clear()
|
|
fh := p.msgOutputForm
|
|
|
|
m := msg{}
|
|
// Loop trough all the form fields
|
|
for i := 0; i < p.msgInputForm.GetFormItemCount(); i++ {
|
|
fi := p.msgInputForm.GetFormItem(i)
|
|
label, value := getLabelAndValue(fi)
|
|
|
|
switch label {
|
|
case "ToNode":
|
|
if value == "" {
|
|
fmt.Fprintf(p.logForm, "%v : error: missing ToNode \n", time.Now().Format("Mon Jan _2 15:04:05 2006"))
|
|
return
|
|
}
|
|
|
|
m.ToNode = steward.Node(value)
|
|
case "Data":
|
|
// Split the comma separated string into a
|
|
// and remove the start and end ampersand.
|
|
sp := strings.Split(value, ",")
|
|
|
|
var data []string
|
|
|
|
for _, v := range sp {
|
|
// Check if format is correct, return if not.
|
|
pre := strings.HasPrefix(v, "\"")
|
|
suf := strings.HasSuffix(v, "\"")
|
|
if !pre || !suf {
|
|
fmt.Fprintf(p.logForm, "%v : error: missing or malformed format for command, should be \"cmd\",\"arg1\",\"arg2\" ...\n", time.Now().Format("Mon Jan _2 15:04:05 2006"))
|
|
return
|
|
}
|
|
// Remove leading and ending ampersand.
|
|
v = v[1:]
|
|
v = strings.TrimSuffix(v, "\"")
|
|
|
|
data = append(data, v)
|
|
}
|
|
|
|
m.Data = data
|
|
case "Method":
|
|
m.Method = steward.Method(value)
|
|
case "ReplyMethod":
|
|
m.ReplyMethod = steward.Method(value)
|
|
case "ACKTimeout":
|
|
v, _ := strconv.Atoi(value)
|
|
m.ACKTimeout = v
|
|
case "Retries":
|
|
v, _ := strconv.Atoi(value)
|
|
m.Retries = v
|
|
case "ReplyACKTimeout":
|
|
v, _ := strconv.Atoi(value)
|
|
m.ReplyACKTimeout = v
|
|
case "ReplyRetries":
|
|
v, _ := strconv.Atoi(value)
|
|
m.ReplyRetries = v
|
|
case "MethodTimeout":
|
|
v, _ := strconv.Atoi(value)
|
|
m.MethodTimeout = v
|
|
case "Directory":
|
|
m.Directory = value
|
|
case "FileName":
|
|
m.FileName = value
|
|
case "Operation":
|
|
// We need to check what type of operation it is, and pick
|
|
// the correct struct type, and fill it with values
|
|
switch value {
|
|
case "ps":
|
|
//TODO
|
|
case "startProc":
|
|
m.Operation = &opCmdStartProc
|
|
case "stopProc":
|
|
m.Operation = &opCmdStopProc
|
|
default:
|
|
m.Operation = nil
|
|
}
|
|
case "startProc Method":
|
|
if value == "" {
|
|
fmt.Fprintf(p.logForm, "%v : error: missing startProc Method\n", time.Now().Format("Mon Jan _2 15:04:05 2006"))
|
|
return
|
|
}
|
|
opCmdStartProc.Method = steward.Method(value)
|
|
|
|
default:
|
|
fmt.Fprintf(p.logForm, "%v : error: did not find case defenition for how to handle the \"%v\" within the switch statement\n", time.Now().Format("Mon Jan _2 15:04:05 2006"), label)
|
|
}
|
|
}
|
|
msgs := []msg{}
|
|
msgs = append(msgs, m)
|
|
|
|
msgsIndented, err := json.MarshalIndent(msgs, "", " ")
|
|
if err != nil {
|
|
fmt.Fprintf(p.logForm, "%v : error: jsonIndent failed: %v\n", time.Now().Format("Mon Jan _2 15:04:05 2006"), err)
|
|
}
|
|
|
|
_, err = fh.Write(msgsIndented)
|
|
if err != nil {
|
|
fmt.Fprintf(p.logForm, "%v : error: write to fh failed: %v\n", time.Now().Format("Mon Jan _2 15:04:05 2006"), err)
|
|
}
|
|
}).
|
|
|
|
// Add exit button.
|
|
AddButton("exit", func() {
|
|
app.Stop()
|
|
})
|
|
|
|
app.SetFocus(p.msgInputForm)
|
|
|
|
return p.flex
|
|
}
|
|
|
|
// Check and compare all the fields of the main message struct
|
|
// used in Steward, and the message struct used in Stew that they are
|
|
// equal.
|
|
// If they are not equal an error will be returned to the user with
|
|
// the name of the field that was missing in the Stew message struct.
|
|
//
|
|
// Some of the fields in the Steward Message struct are used by the
|
|
// system for control, and not needed when creating an initial message
|
|
// template, and we can add case statements for those fields below
|
|
// that we do not wan't to check.
|
|
func compareMsgAndMessage() error {
|
|
stewardMessage := steward.Message{}
|
|
stewMsg := msg{}
|
|
|
|
stewardRefVal := reflect.ValueOf(stewardMessage)
|
|
stewRefVal := reflect.ValueOf(stewMsg)
|
|
|
|
// Loop trough all the fields of the Message struct.
|
|
for i := 0; i < stewardRefVal.NumField(); i++ {
|
|
found := false
|
|
|
|
for ii := 0; ii < stewRefVal.NumField(); ii++ {
|
|
if stewardRefVal.Type().Field(i).Name == stewRefVal.Type().Field(ii).Name {
|
|
found = true
|
|
break
|
|
}
|
|
}
|
|
|
|
// Case statements for the fields we don't care about for
|
|
// the message template.
|
|
if !found {
|
|
switch stewardRefVal.Type().Field(i).Name {
|
|
case "ID":
|
|
// Not used in message template.
|
|
case "FromNode":
|
|
// Not used in message template.
|
|
case "PreviousMessage":
|
|
// Not used in message template.
|
|
case "done":
|
|
// Not used in message template.
|
|
default:
|
|
return fmt.Errorf("error: %v within the steward Message struct were not found in the stew msg struct", stewardRefVal.Type().Field(i).Name)
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// Will return the Label And the text Value of an input or dropdown form field.
|
|
func getLabelAndValue(fi tview.FormItem) (string, string) {
|
|
var label string
|
|
var value string
|
|
switch v := fi.(type) {
|
|
case *tview.InputField:
|
|
value = v.GetText()
|
|
label = v.GetLabel()
|
|
case *tview.DropDown:
|
|
label = v.GetLabel()
|
|
_, value = v.GetCurrentOption()
|
|
}
|
|
|
|
return label, value
|
|
}
|
|
|
|
// Check if number is int.
|
|
func validateInteger(text string, ch rune) bool {
|
|
if text == "-" {
|
|
return true
|
|
}
|
|
_, err := strconv.Atoi(text)
|
|
return err == nil
|
|
}
|
|
|
|
// getNodes will load all the node names from a file, and return a slice of
|
|
// string values, each representing a unique node.
|
|
func getNodeNames(filePath string) ([]string, error) {
|
|
|
|
fh, err := os.Open(filePath)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("error: unable to open node file: %v", err)
|
|
}
|
|
defer fh.Close()
|
|
|
|
nodes := []string{}
|
|
|
|
scanner := bufio.NewScanner(fh)
|
|
for scanner.Scan() {
|
|
node := scanner.Text()
|
|
nodes = append(nodes, node)
|
|
}
|
|
|
|
return nodes, nil
|
|
}
|
|
|
|
// -----------------------
|
|
|
|
// Creating a copy of the real Message struct here to use within the
|
|
// field specification, but without the control kind of fields from
|
|
// the original to avoid changing them to pointer values in the main
|
|
// struct which would be needed when json marshaling to omit those
|
|
// empty fields.
|
|
type msg struct {
|
|
// The node to send the message to
|
|
ToNode steward.Node `json:"toNode" yaml:"toNode"`
|
|
// The actual data in the message
|
|
Data []string `json:"data" yaml:"data"`
|
|
// Method, what is this message doing, etc. CLI, syslog, etc.
|
|
Method steward.Method `json:"method" yaml:"method"`
|
|
// ReplyMethod, is the method to use for the reply message.
|
|
// By default the reply method will be set to log to file, but
|
|
// you can override it setting your own here.
|
|
ReplyMethod steward.Method `json:"replyMethod" yaml:"replyMethod"`
|
|
// From what node the message originated
|
|
ACKTimeout int `json:"ACKTimeout" yaml:"ACKTimeout"`
|
|
// Resend retries
|
|
Retries int `json:"retries" yaml:"retries"`
|
|
// The ACK timeout of the new message created via a request event.
|
|
ReplyACKTimeout int `json:"replyACKTimeout" yaml:"replyACKTimeout"`
|
|
// The retries of the new message created via a request event.
|
|
ReplyRetries int `json:"replyRetries" yaml:"replyRetries"`
|
|
// Timeout for long a process should be allowed to operate
|
|
MethodTimeout int `json:"methodTimeout" yaml:"methodTimeout"`
|
|
// Directory is a string that can be used to create the
|
|
//directory structure when saving the result of some method.
|
|
// For example "syslog","metrics", or "metrics/mysensor"
|
|
// The type is typically used in the handler of a method.
|
|
Directory string `json:"directory" yaml:"directory"`
|
|
// FileName is used to be able to set a wanted extension
|
|
// on a file being saved as the result of data being handled
|
|
// by a method handler.
|
|
FileName string `json:"fileName" yaml:"fileName"`
|
|
// operation are used to give an opCmd and opArg's.
|
|
Operation interface{} `json:"operation,omitempty"`
|
|
}
|