v0.7.0

- update dependencies
- add up/down time #14
- add workers with retry to help with spam

.dockerignore

@@ -0,0 +1,2 @@
+/vendor
+/dist

.gitignore

@@ -1,2 +1,3 @@
 config.json
 dist
+vendor

Dockerfile

@@ -0,0 +1,17 @@
+FROM golang:1.11.1-alpine
+
+WORKDIR /go/src/github.com/mgerb/ServerStatus
+ADD . .
+RUN apk add --no-cache git alpine-sdk
+RUN go get -u github.com/golang/dep/cmd/dep
+RUN dep ensure
+RUN make linux
+
+
+FROM alpine:3.8
+
+RUN apk update && apk add ca-certificates && rm -rf /var/cache/apk/*
+WORKDIR /server-status
+COPY --from=0 /go/src/github.com/mgerb/ServerStatus/dist/ServerStatus-linux .
+ENTRYPOINT ./ServerStatus-linux
+

Gopkg.lock

@@ -0,0 +1,90 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  digest = "1:05eebdd5727fea23083fce0d98d307d70c86baed644178e81608aaa9f09ea469"
+  name = "github.com/Sirupsen/logrus"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "60c74ad9be0d874af0ab0daef6ab07c5c5911f0d"
+  version = "v1.6.0"
+
+[[projects]]
+  branch = "master"
+  digest = "1:b7e05c8da029b985907b15e126cde5f42f2814b08211a184dac436eeec6fe780"
+  name = "github.com/anvie/port-scanner"
+  packages = [
+    ".",
+    "predictors",
+    "predictors/webserver",
+  ]
+  pruneopts = "UT"
+  revision = "8159197d3770eb6dbf3a9706a6d40462ebb69cec"
+
+[[projects]]
+  digest = "1:d87c9221a974263e3b369bfd3513707b2a53e27a6cd799d472f94dc6a6157e59"
+  name = "github.com/bwmarrin/discordgo"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "ed4d6904961d1688b3f5601b3d73e95a71046734"
+  version = "v0.20.3"
+
+[[projects]]
+  digest = "1:6d29f02f0f01c627c2be40fb7347669a9ff2aa215cb97747294c1d13ffa74bdd"
+  name = "github.com/gorilla/websocket"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "b65e62901fc1c0d968042419e74789f6af455eb9"
+  version = "v1.4.2"
+
+[[projects]]
+  branch = "master"
+  digest = "1:50993a8fbb3042b88dfecb8f4473a42f13ac70d6fd86f64df525a28b357c2d5b"
+  name = "github.com/kidoman/go-steam"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "2e40e0d508cbac591bab4ae18b231153295f3a0a"
+
+[[projects]]
+  digest = "1:09cb61dc19af93deae01587e2fdb1c081e0bf48f1a5ad5fa24f48750dc57dce8"
+  name = "github.com/konsorten/go-windows-terminal-sequences"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "edb144dfd453055e1e49a3d8b410a660b5a87613"
+  version = "v1.0.3"
+
+[[projects]]
+  branch = "master"
+  digest = "1:1714bd928fd176237ccdea21695bf72801c1ee5f51bccefb69b87f0fd376a6aa"
+  name = "golang.org/x/crypto"
+  packages = [
+    "internal/subtle",
+    "nacl/secretbox",
+    "poly1305",
+    "salsa20/salsa",
+  ]
+  pruneopts = "UT"
+  revision = "70a84ac30bf957c7df57edd1935d2081871515e1"
+
+[[projects]]
+  branch = "master"
+  digest = "1:145abe7dfa46d17ef35e5126ed1cc87b9100e78b9f428c9460deea34bfeabafb"
+  name = "golang.org/x/sys"
+  packages = [
+    "cpu",
+    "internal/unsafeheader",
+    "unix",
+  ]
+  pruneopts = "UT"
+  revision = "226ff32320da7b90d0b5bc2365f4e359c466fb78"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  input-imports = [
+    "github.com/anvie/port-scanner",
+    "github.com/bwmarrin/discordgo",
+    "github.com/kidoman/go-steam",
+  ]
+  solver-name = "gps-cdcl"
+  solver-version = 1

Gopkg.toml

@@ -0,0 +1,42 @@
+# Gopkg.toml example
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#   name = "github.com/x/y"
+#   version = "2.4.0"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
+
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/anvie/port-scanner"
+
+[[constraint]]
+  name = "github.com/bwmarrin/discordgo"
+  version = "0.20.0"
+
+[prune]
+  go-tests = true
+  unused-packages = true
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/kidoman/go-steam"

config.template.json

@@ -1,8 +1,10 @@
 {
     "Token": "your bot token",
     "RoomIDList":["room id list goes here"],
-    "RoleToNotify": "@everyone",
+    "RolesToNotify": ["<@&roleid>", "<@userid>"],
     "GameStatus": "current playing game",
+    "PollingInterval": 10,
+    "BotPrefix": "!",
     "Servers": [
         {
             "Name": "Your awesome server",

config/config.go

@@ -2,32 +2,39 @@ package config
 
 import (
 	"encoding/json"
+	"fmt"
 	"io/ioutil"
 	"log"
 	"os"
+	"time"
 )
 
 // Variables used for command line parameters
 var Config configStruct
 
 type configStruct struct {
-	Token        string   `json:"Token"`
-	RoomIDList   []string `json:"RoomIDList"`
-	RoleToNotify string   `json:"RoleToNotify"`
-	Servers      []server `json:"Servers"`
-	GameStatus   string   `json:"GameStatus"`
+	Token           string        `json:"Token"`
+	RoomIDList      []string      `json:"RoomIDList"`
+	RolesToNotify   []string      `json:"RolesToNotify"`
+	Servers         []Server      `json:"Servers"`
+	GameStatus      string        `json:"GameStatus"`
+	PollingInterval time.Duration `json:"PollingInterval"`
+	BotPrefix       string        `json:"BotPrefix"`
 }
 
-type server struct {
+type Server struct {
 	Name    string `json:"Name"`
 	Address string `json:"Address"`
 	Port    int    `json:"Port"`
 	Online  bool   `json:"Online,omitempty"`
+	// OnlineTimestamp - time of when the server last came online
+	OnlineTimestamp  time.Time
+	OfflineTimestamp time.Time
 }
 
 func Configure() {
 
-	log.Println("Reading config file...")
+	fmt.Println("Reading config file...")
 
 	file, e := ioutil.ReadFile("./config.json")
 
@@ -36,12 +43,14 @@ func Configure() {
 		os.Exit(1)
 	}
 
-	log.Printf("%s\n", string(file))
-
 	err := json.Unmarshal(file, &Config)
 
 	if err != nil {
 		log.Println(err)
 	}
 
+	if Config.PollingInterval == 0 {
+		log.Fatal("Please set your PollingInterval > 0 in your config file.")
+	}
+
 }

docker-build.sh

@@ -0,0 +1,5 @@
+version=$(git describe --tags)
+
+docker build -t mgerb/server-status:latest .
+docker tag mgerb/server-status:latest mgerb/server-status:$version
+

docker-compose.yml

@@ -0,0 +1,7 @@
+version: "2"
+
+services:
+  server-status:
+    image: mgerb/server-status:latest
+    volumes:
+    - ./config.json:/server-status/config.json

docker-push.sh

@@ -0,0 +1,5 @@
+version=$(git describe --tags)
+
+docker push mgerb/server-status:latest;
+docker push mgerb/server-status:$version;
+

main.go

@@ -1,15 +1,18 @@
 package main
 
 import (
-	"github.com/mgerb/serverstatus/bot"
-	"github.com/mgerb/serverstatus/config"
-	"github.com/mgerb/serverstatus/serverstatus"
+	"fmt"
+
+	"github.com/mgerb/ServerStatus/bot"
+	"github.com/mgerb/ServerStatus/config"
+	"github.com/mgerb/ServerStatus/serverstatus"
 )
 
-// Variables used for command line parameters
-var (
-	BotID string
-)
+var version = "undefined"
+
+func init() {
+	fmt.Println("Starting Server Status " + version)
+}
 
 func main() {
 	//read config file

makefile

@@ -1,14 +1,16 @@
+VERSION := $(shell git describe --tags)
+
 run:
 	go run ./src/main.go
 
 linux:
-	go build -o ./dist/ServerStatus-linux ./main.go
+	GOOS=linux GOARCH=amd64 go build -o ./dist/ServerStatus-linux -ldflags="-X main.version=${VERSION}" ./main.go
 
 mac:
-	GOOS=darwin GOARCH=amd64 go build -o ./dist/ServerStatus-mac ./main.go
+	GOOS=darwin GOARCH=amd64 go build -o ./dist/ServerStatus-mac -ldflags="-X main.version=${VERSION}" ./main.go
 	
 windows:
-	GOOS=windows GOARCH=386 go build -o ./dist/ServerStatus-windows.exe ./main.go
+	GOOS=windows GOARCH=386 go build -o ./dist/ServerStatus-windows.exe -ldflags="-X main.version=${VERSION}" ./main.go
 
 clean:
 	rm -rf ./dist
@@ -16,4 +18,7 @@ clean:
 copyfiles:
 	cp config.template.json ./dist/config.json
 
+zip:
+	zip -r dist.zip dist
+
 all: linux mac windows copyfiles

readme.md

@@ -1,24 +1,51 @@
-## Server Status
+# Server Status
+Monitors a list of servers and sends a chat notification when a server goes on or offline.
 
-Scans a list of servers checking whether the ports are open or not.
-This bot will send a chat notification when the status of a server changes (goes on or offline).
-
-I originally made this bot to check if private World of Warcraft servers were up or not.
-It's actually much more useful than that and can be used for most servers.
-
-It has been brought to my attention that this bot currently does not work for Ark servers.
-
-### Note - updated for Felmyst server!
-The config template contains IP/Ports for the new Felmyst game and logon servers
+- **TCP** - should work with all servers
+- **UDP** - [Source RCON Protocol](https://developer.valvesoftware.com/wiki/Source_RCON_Protocol) is supported
 
 ## Configuration
-
 - Download the latest release [here](https://github.com/mgerb/ServerStatus/releases)
-- Add your bot token as well as other configurations to config.json
+- Add your bot token as well as other configurations to **config.json**
 - Execute the OS specific binary!
 
-## Compiling from source
+### Mentioning Roles/Users
+- list of user/role ID's must be in the following format (see below for obtaining ID's)
+- `<@userid>`
+- `<@&roleid>`
 
+### Polling Interval
+The polling interval is how often the bot will try to ping the servers.
+A good interval is 10 seconds, but this may need some adjustment if
+it happens to be spamming notifications.
+
+- time in seconds
+- configurable in **config.json**
+
+## With Docker
+
+```
+docker run -it -v /path/to/your/config.json:/server-status/config.json:ro mgerb/server-status
+```
+
+### Docker Compose
+
+```
+version: "2"
+
+services:
+  server-status:
+    image: mgerb/server-status:latest
+    volumes:
+    - /path/to/your/config.json:/server-status/config.json
+```
+
+## Usage
+To get the current status of your servers simply type `!ServerStatus` in chat.
+
+![Server Status](./readme_files/screenshot1.png)
+
+## Compiling from source
 - Make sure Go and Make are installed
 - make all
 
@@ -26,19 +53,6 @@ The config template contains IP/Ports for the new Felmyst game and logon servers
 https://github.com/reactiflux/discord-irc/wiki/Creating-a-discord-bot-&-getting-a-token
 
 ### How to get your room ID
-
 To get IDs, turn on Developer Mode in the Discord client (User Settings -> Appearance) and then right-click your name/icon anywhere in the client and select Copy ID.
 
-<img src="https://camo.githubusercontent.com/9f759ec8b45a6e9dd2242bc64c82897c74f84a25/687474703a2f2f692e696d6775722e636f6d2f47684b70424d512e676966"/>
-
-## List server status in discord channel
-
-`!ServerStatus`
-
-```
-Elysium PvP is online!
-Zethkur PvP is online!
-Anathema PvP is online!
-Darrowshire PvE is online!
-Elysium Authentication Server is online!
-```
+<img src="./readme_files/screenshot2.gif"/>

serverstatus/serverstatus.go

@@ -1,23 +1,39 @@
 package serverstatus
 
 import (
+	"fmt"
 	"log"
+	"strconv"
+	"strings"
+	"sync"
 	"time"
 
-	"github.com/anvie/port-scanner"
+	portscanner "github.com/anvie/port-scanner"
 	"github.com/bwmarrin/discordgo"
-	"github.com/mgerb/serverstatus/bot"
-	"github.com/mgerb/serverstatus/config"
+	steam "github.com/kidoman/go-steam"
+	"github.com/mgerb/ServerStatus/bot"
+	"github.com/mgerb/ServerStatus/config"
 )
 
+const (
+	red   = 0xf4425c
+	green = 0x42f477
+	blue  = 0x42adf4
+)
+
+// Start - start port scanner and bot listeners
 func Start() {
 	//set each server status as online to start
-	for i, _ := range config.Config.Servers {
+	for i := range config.Config.Servers {
 		config.Config.Servers[i].Online = true
+		config.Config.Servers[i].OnlineTimestamp = time.Now()
+		config.Config.Servers[i].OfflineTimestamp = time.Now()
 	}
 
 	err := bot.Session.UpdateStatus(0, config.Config.GameStatus)
 
+	sendMessageToRooms(blue, "Server Status", "Bot started! Type !ServerStatus to see the status of your servers :smiley:", false)
+
 	if err != nil {
 		log.Println(err)
 	}
@@ -36,32 +52,85 @@ func scanServers() {
 
 	for {
 
-		for index, server := range config.Config.Servers {
-			prevServerUp := server.Online //set value to previous server status
+		// use waitgroup to scan all servers concurrently
+		var wg sync.WaitGroup
 
-			serverScanner := portscanner.NewPortScanner(server.Address, time.Second*2, 1)
-			serverUp := serverScanner.IsOpen(server.Port) //check if the port is open
-
-			if serverUp && serverUp != prevServerUp {
-				sendMessage(config.Config.RoleToNotify + " " + server.Name + " is now online!")
-			} else if !serverUp && serverUp != prevServerUp {
-				sendMessage(config.Config.RoleToNotify + " " + server.Name + " went offline!")
-			}
-
-			config.Config.Servers[index].Online = serverUp
+		for index := range config.Config.Servers {
+			wg.Add(1)
+			go worker(index, &config.Config.Servers[index], &wg)
 		}
 
-		time.Sleep(time.Second * 5)
+		wg.Wait()
+
+		time.Sleep(time.Second * config.Config.PollingInterval)
 	}
 }
 
-func sendMessage(message string) {
+func worker(index int, server *config.Server, wg *sync.WaitGroup) {
+	defer wg.Done()
+
+	prevServerUp := server.Online //set value to previous server status
+
+	var serverUp bool
+	retryCounter := 0
+
+	// try reconnecting 5 times if failure persists (every 2 seconds)
+	for {
+		serverScanner := portscanner.NewPortScanner(server.Address, time.Second*2, 1)
+		serverUp = serverScanner.IsOpen(server.Port) //check if the port is open
+		if serverUp || retryCounter >= 5 {
+			break
+		}
+		retryCounter++
+		time.Sleep(time.Second * 2)
+	}
+
+	// if server isn't up check RCON protocol (UDP)
+	if !serverUp {
+		host := server.Address + ":" + strconv.Itoa(server.Port)
+		steamConnection, err := steam.Connect(host)
+		if err == nil {
+			defer steamConnection.Close()
+			_, err := steamConnection.Ping()
+			if err == nil {
+				serverUp = true
+			}
+		}
+	}
+
+	if serverUp && serverUp != prevServerUp {
+		server.OnlineTimestamp = time.Now()
+		sendMessageToRooms(green, server.Name, "Is now online :smiley:", true)
+	} else if !serverUp && serverUp != prevServerUp {
+		server.OfflineTimestamp = time.Now()
+		sendMessageToRooms(red, server.Name, "Has gone offline :frowning2:", true)
+	}
+
+	server.Online = serverUp
+}
+
+func sendMessageToRooms(color int, title, description string, mentionRoles bool) {
 	for _, roomID := range config.Config.RoomIDList {
-		bot.Session.ChannelMessageSend(roomID, message)
+		if mentionRoles {
+			content := strings.Join(config.Config.RolesToNotify, " ")
+			bot.Session.ChannelMessageSend(roomID, content)
+		}
+		sendEmbeddedMessage(roomID, color, title, description)
 	}
 }
 
-// This function will be called every time a new
+func sendEmbeddedMessage(roomID string, color int, title, description string) {
+
+	embed := &discordgo.MessageEmbed{
+		Color:       color,
+		Title:       title,
+		Description: description,
+	}
+
+	bot.Session.ChannelMessageSendEmbed(roomID, embed)
+}
+
+// MessageHandler will be called every time a new
 // message is created on any channel that the autenticated bot has access to.
 func MessageHandler(s *discordgo.Session, m *discordgo.MessageCreate) {
 
@@ -70,13 +139,23 @@ func MessageHandler(s *discordgo.Session, m *discordgo.MessageCreate) {
 		return
 	}
 
-	if m.Content == "!ServerStatus" {
+	if m.Content == config.Config.BotPrefix+"ServerStatus" {
 		for _, server := range config.Config.Servers {
 			if server.Online {
-				s.ChannelMessageSend(m.ChannelID, server.Name+" is online!")
+				sendEmbeddedMessage(m.ChannelID, green, server.Name, "Online!\nUptime: "+fmtDuration(time.Since(server.OnlineTimestamp)))
 			} else {
-				s.ChannelMessageSend(m.ChannelID, server.Name+" is down!")
+				sendEmbeddedMessage(m.ChannelID, red, server.Name, "Offline!\nDowntime: "+fmtDuration(time.Since(server.OfflineTimestamp)))
 			}
 		}
 	}
 }
+
+func fmtDuration(d time.Duration) string {
+
+	days := int(d.Hours()) / 24
+	hours := int(d.Hours()) % 60
+	minutes := int(d.Minutes()) % 60
+	seconds := int(d.Seconds()) % 60
+
+	return fmt.Sprintf("%dd %dh %dm %ds", days, hours, minutes, seconds)
+}