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ctrl/requests_std.go

319 lines
9.4 KiB
Go

package steward
import (
"fmt"
"os"
"path/filepath"
"time"
)
// -----
type methodREQHello struct {
event Event
}
func (m methodREQHello) getKind() Event {
return m.event
}
// Handler for receiving hello messages.
func (m methodREQHello) handler(proc process, message Message, node string) ([]byte, error) {
data := fmt.Sprintf("%v, Received hello from %#v\n", time.Now().Format("Mon Jan _2 15:04:05 2006"), message.FromNode)
fileName := message.FileName
folderTree := filepath.Join(proc.configuration.SubscribersDataFolder, message.Directory, string(message.FromNode))
// Check if folder structure exist, if not create it.
if _, err := os.Stat(folderTree); os.IsNotExist(err) {
err := os.MkdirAll(folderTree, 0700)
if err != nil {
return nil, fmt.Errorf("error: failed to create errorLog directory tree %v: %v", folderTree, err)
}
er := fmt.Errorf("info: Creating subscribers data folder at %v", folderTree)
proc.errorKernel.logConsoleOnlyIfDebug(er, proc.configuration)
}
// Open file and write data.
file := filepath.Join(folderTree, fileName)
//f, err := os.OpenFile(file, os.O_APPEND|os.O_RDWR|os.O_CREATE|os.O_SYNC, 0600)
f, err := os.OpenFile(file, os.O_TRUNC|os.O_RDWR|os.O_CREATE|os.O_SYNC, 0600)
if err != nil {
er := fmt.Errorf("error: methodREQHello.handler: failed to open file: %v", err)
return nil, er
}
defer f.Close()
_, err = f.Write([]byte(data))
f.Sync()
if err != nil {
er := fmt.Errorf("error: methodEventTextLogging.handler: failed to write to file: %v", err)
proc.errorKernel.errSend(proc, message, er)
}
// --------------------------
// send the message to the procFuncCh which is running alongside the process
// and can hold registries and handle special things for an individual process.
proc.procFuncCh <- message
ackMsg := []byte("confirmed from: " + node + ": " + fmt.Sprint(message.ID))
return ackMsg, nil
}
// ---
type methodREQErrorLog struct {
event Event
}
func (m methodREQErrorLog) getKind() Event {
return m.event
}
// Handle the writing of error logs.
func (m methodREQErrorLog) handler(proc process, message Message, node string) ([]byte, error) {
proc.metrics.promErrorMessagesReceivedTotal.Inc()
// If it was a request type message we want to check what the initial messages
// method, so we can use that in creating the file name to store the data.
fileName, folderTree := selectFileNaming(message, proc)
// Check if folder structure exist, if not create it.
if _, err := os.Stat(folderTree); os.IsNotExist(err) {
err := os.MkdirAll(folderTree, 0700)
if err != nil {
return nil, fmt.Errorf("error: failed to create errorLog directory tree %v: %v", folderTree, err)
}
er := fmt.Errorf("info: Creating subscribers data folder at %v", folderTree)
proc.errorKernel.logConsoleOnlyIfDebug(er, proc.configuration)
}
// Open file and write data.
file := filepath.Join(folderTree, fileName)
f, err := os.OpenFile(file, os.O_APPEND|os.O_RDWR|os.O_CREATE|os.O_SYNC, 0600)
if err != nil {
er := fmt.Errorf("error: methodREQErrorLog.handler: failed to open file: %v", err)
return nil, er
}
defer f.Close()
_, err = f.Write(message.Data)
f.Sync()
if err != nil {
er := fmt.Errorf("error: methodEventTextLogging.handler: failed to write to file: %v", err)
proc.errorKernel.errSend(proc, message, er)
}
ackMsg := []byte("confirmed from: " + node + ": " + fmt.Sprint(message.ID))
return ackMsg, nil
}
// ---
type methodREQPing struct {
event Event
}
func (m methodREQPing) getKind() Event {
return m.event
}
// Handle receving a ping.
func (m methodREQPing) handler(proc process, message Message, node string) ([]byte, error) {
// Write to file that we received a ping
// If it was a request type message we want to check what the initial messages
// method, so we can use that in creating the file name to store the data.
fileName, folderTree := selectFileNaming(message, proc)
// Check if folder structure exist, if not create it.
if _, err := os.Stat(folderTree); os.IsNotExist(err) {
err := os.MkdirAll(folderTree, 0700)
if err != nil {
er := fmt.Errorf("error: methodREQPing.handler: failed to create toFile directory tree: %v, %v", folderTree, err)
proc.errorKernel.errSend(proc, message, er)
return nil, er
}
er := fmt.Errorf("info: Creating subscribers data folder at %v", folderTree)
proc.errorKernel.logConsoleOnlyIfDebug(er, proc.configuration)
}
// Open file.
file := filepath.Join(folderTree, fileName)
f, err := os.OpenFile(file, os.O_CREATE|os.O_RDWR|os.O_TRUNC, 0755)
if err != nil {
er := fmt.Errorf("error: methodREQPing.handler: failed to open file, check that you've specified a value for fileName in the message: directory: %v, fileName: %v, %v", message.Directory, message.FileName, err)
proc.errorKernel.errSend(proc, message, er)
return nil, err
}
defer f.Close()
// And write the data
d := fmt.Sprintf("%v, ping received from %v\n", time.Now().Format("Mon Jan _2 15:04:05 2006"), message.FromNode)
_, err = f.Write([]byte(d))
f.Sync()
if err != nil {
er := fmt.Errorf("error: methodREQPing.handler: failed to write to file: directory: %v, fileName: %v, %v", message.Directory, message.FileName, err)
proc.errorKernel.errSend(proc, message, er)
}
proc.processes.wg.Add(1)
go func() {
defer proc.processes.wg.Done()
newReplyMessage(proc, message, nil)
}()
ackMsg := []byte("confirmed from: " + node + ": " + fmt.Sprint(message.ID))
return ackMsg, nil
}
// ---
type methodREQPong struct {
event Event
}
func (m methodREQPong) getKind() Event {
return m.event
}
// Handle receiving a pong.
func (m methodREQPong) handler(proc process, message Message, node string) ([]byte, error) {
// Write to file that we received a pong
// If it was a request type message we want to check what the initial messages
// method, so we can use that in creating the file name to store the data.
fileName, folderTree := selectFileNaming(message, proc)
// Check if folder structure exist, if not create it.
if _, err := os.Stat(folderTree); os.IsNotExist(err) {
err := os.MkdirAll(folderTree, 0700)
if err != nil {
er := fmt.Errorf("error: methodREQPong.handler: failed to create toFile directory tree %v: %v", folderTree, err)
proc.errorKernel.errSend(proc, message, er)
return nil, er
}
er := fmt.Errorf("info: Creating subscribers data folder at %v", folderTree)
proc.errorKernel.logConsoleOnlyIfDebug(er, proc.configuration)
}
// Open file.
file := filepath.Join(folderTree, fileName)
f, err := os.OpenFile(file, os.O_CREATE|os.O_RDWR|os.O_TRUNC, 0755)
if err != nil {
er := fmt.Errorf("error: methodREQPong.handler: failed to open file, check that you've specified a value for fileName in the message: directory: %v, fileName: %v, %v", message.Directory, message.FileName, err)
proc.errorKernel.errSend(proc, message, er)
return nil, err
}
defer f.Close()
// And write the data
d := fmt.Sprintf("%v, pong received from %v\n", time.Now().Format("Mon Jan _2 15:04:05 2006"), message.PreviousMessage.ToNode)
_, err = f.Write([]byte(d))
f.Sync()
if err != nil {
er := fmt.Errorf("error: methodREQPong.handler: failed to write to file: directory: %v, fileName: %v, %v", message.Directory, message.FileName, err)
proc.errorKernel.errSend(proc, message, er)
}
ackMsg := []byte("confirmed from: " + node + ": " + fmt.Sprint(message.ID))
return ackMsg, nil
}
// ---
type methodREQToConsole struct {
event Event
}
func (m methodREQToConsole) getKind() Event {
return m.event
}
// Handler to write directly to console.
// This handler handles the writing to console both for TUI and shell clients.
func (m methodREQToConsole) handler(proc process, message Message, node string) ([]byte, error) {
switch {
case proc.configuration.EnableTUI:
if proc.processes.tui.toConsoleCh != nil {
proc.processes.tui.toConsoleCh <- message.Data
} else {
er := fmt.Errorf("error: no tui client started")
proc.errorKernel.errSend(proc, message, er)
}
default:
fmt.Fprintf(os.Stdout, "%v", string(message.Data))
fmt.Println()
}
ackMsg := []byte("confirmed from: " + node + ": " + fmt.Sprint(message.ID))
return ackMsg, nil
}
// ---
type methodREQTuiToConsole struct {
event Event
}
func (m methodREQTuiToConsole) getKind() Event {
return m.event
}
// Handler to write directly to console.
// DEPRECATED
func (m methodREQTuiToConsole) handler(proc process, message Message, node string) ([]byte, error) {
if proc.processes.tui.toConsoleCh != nil {
proc.processes.tui.toConsoleCh <- message.Data
} else {
er := fmt.Errorf("error: no tui client started")
proc.errorKernel.errSend(proc, message, er)
}
ackMsg := []byte("confirmed from: " + node + ": " + fmt.Sprint(message.ID))
return ackMsg, nil
}
// ---
type methodREQTest struct {
event Event
}
func (m methodREQTest) getKind() Event {
return m.event
}
// handler to be used as a reply method when testing requests.
// We can then within the test listen on the testCh for received
// data and validate it.
// If no test is listening the data will be dropped.
func (m methodREQTest) handler(proc process, message Message, node string) ([]byte, error) {
go func() {
// Try to send the received message data on the test channel. If we
// have a test started the data will be read from the testCh.
// If no test is reading from the testCh the data will be dropped.
select {
case proc.errorKernel.testCh <- message.Data:
default:
// drop.
}
}()
ackMsg := []byte("confirmed from: " + node + ": " + fmt.Sprint(message.ID))
return ackMsg, nil
}