diff --git a/README.md b/README.md index 186c24e..0b2a4b5 100644 --- a/README.md +++ b/README.md @@ -1,12 +1,18 @@ # MTSatellite +**Attention** MTSatellite is currently getting some improvements +namely PostgreSQL backend support and and a new Vue-JS based web client. + +The new features are in but the documentation is not updated, yet. +Hopefully this will change soon. + MTSatellite is a "realtime" web mapping system for [Minetest](http://minetest.net) worlds. With this system you can play your world and you instantly have an online map of it which can be shared on the web. To get a glimpse what it does watch [Realtime Webmapping for Minetest worlds](http://youtu.be/iYEROGPj7RI) on YouTube. -A live map of an online world can be viewed [here](http://maps.mt.sha-bang.de/). +A live map of an online world can be viewed [here](https://maps.mt.intevation.de/). See [COMPILE](https://bitbucket.org/s_l_teichmann/mtsatellite/src/default/COMPILE.md) how to compile MTSatellite. Essentially you need Go 1.4 (or higher) and a GNU/Linux system. diff --git a/cmd/mtseeder/baselevel.go b/cmd/mtseeder/baselevel.go index 72b0c74..d11484a 100644 --- a/cmd/mtseeder/baselevel.go +++ b/cmd/mtseeder/baselevel.go @@ -10,7 +10,6 @@ import ( "os" "path/filepath" "strconv" - "strings" "sync" "bitbucket.org/s_l_teichmann/mtsatellite/common" @@ -57,7 +56,7 @@ func createTiles( } func createBaseLevel( - address string, + dbcf common.DBClientFactory, xMin, yMin, zMin, xMax, yMax, zMax int, transparent bool, transparentDim float32, colorsFile string, bg color.RGBA, outDir string, @@ -79,17 +78,10 @@ func createBaseLevel( jobs := make(chan blockPos) var done sync.WaitGroup - var proto string - if strings.ContainsRune(address, '/') { - proto = "unix" - } else { - proto = "tcp" - } - for i := 0; i < numWorkers; i++ { - var client *common.RedisClient + var client common.DBClient - if client, err = common.NewRedisClient(proto, address); err != nil { + if client, err = dbcf.Create(); err != nil { return } done.Add(1) diff --git a/cmd/mtseeder/main.go b/cmd/mtseeder/main.go index 8af83df..31d8664 100644 --- a/cmd/mtseeder/main.go +++ b/cmd/mtseeder/main.go @@ -6,9 +6,7 @@ package main import ( "flag" - "fmt" "log" - "strings" "bitbucket.org/s_l_teichmann/mtsatellite/common" ) @@ -70,16 +68,16 @@ func main() { bg := common.ParseColorDefault(bgColor, common.BackgroundColor) + dbcf, err := common.CreateDBClientFactory(host, port) + if err != nil { + log.Fatalf("error: %s\n", err) + } + defer dbcf.Close() + if !skipBaseLevel { td := common.Clamp32f(float32(transparentDim/100.0), 0.0, 1.0) - var address string - if strings.ContainsRune(host, '/') { - address = host - } else { - address = fmt.Sprintf("%s:%d", host, port) - } if err := createBaseLevel( - address, + dbcf, xMin, yMin, zMin, xMax, yMax, zMax, transparent, td, colorsFile, bg, diff --git a/cmd/mttilemapper/main.go b/cmd/mttilemapper/main.go index 55d6ffc..d24ae3b 100644 --- a/cmd/mttilemapper/main.go +++ b/cmd/mttilemapper/main.go @@ -6,12 +6,10 @@ package main import ( "flag" - "fmt" "image" "log" "os" "runtime/pprof" - "strings" "bitbucket.org/s_l_teichmann/mtsatellite/common" ) @@ -85,17 +83,14 @@ func main() { colors.TransparentDim = common.Clamp32f( float32(transparentDim/100.0), 0.0, 100.0) - var proto, address string - if strings.ContainsRune(host, '/') { - proto, address = "unix", host - } else { - proto, address = "tcp", fmt.Sprintf("%s:%d", host, port) + cf, err := common.CreateDBClientFactory(host, port) + if err != nil { + log.Fatalf("error: %v\n", err) } - var client *common.RedisClient - - if client, err = common.NewRedisClient(proto, address); err != nil { - log.Fatalf("Cannot connect to '%s': %s", address, err) + client, err := cf.Create() + if err != nil { + log.Fatalf("Cannot connect to '%s:%d': %s", host, port, err) } defer client.Close() diff --git a/cmd/mtwebmapper/config.go b/cmd/mtwebmapper/config.go new file mode 100644 index 0000000..bb2bfda --- /dev/null +++ b/cmd/mtwebmapper/config.go @@ -0,0 +1,91 @@ +// Copyright 2014, 2015, 2022 by Sascha L. Teichmann +// Use of this source code is governed by the MIT license +// that can be found in the LICENSE file. + +package main + +import ( + "flag" + "time" + + "github.com/BurntSushi/toml" + + "bitbucket.org/s_l_teichmann/mtsatellite/common" +) + +type duration struct { + time.Duration +} + +type config struct { + WebPort int `toml:"web_port"` + WebHost string `toml:"web_host"` + WebDir string `toml:"web"` + MapDir string `toml:"map"` + RedisPort int `toml:"redis_port"` + RedisHost string `toml:"redis_host"` + ColorsFile string `toml:"colors"` + BGColor string `toml:"background"` + Workers int `toml:"workers"` + Transparent bool `toml:"transparent"` + TransparentDim float64 `toml:"transparent_dim"` + UpdateHosts string `toml:"update_hosts"` + Websockets bool `toml:"websockets"` + PlayersFIFO string `toml:"players"` + YMin int `toml:"ymin"` + YMax int `toml:"ymax"` + ChangeDuration duration `toml:"change_duration"` +} + +func (d *duration) UnmarshalText(text []byte) error { + var err error + d.Duration, err = time.ParseDuration(string(text)) + return err +} + +func (cfg *config) bindFlags() { + defaultBgColor := common.ColorToHex(common.BackgroundColor) + + flag.IntVar(&cfg.WebPort, "web-port", 8808, "port of the web server") + flag.IntVar(&cfg.WebPort, "p", 8808, "port of the web server (shorthand)") + flag.StringVar(&cfg.WebHost, "web-host", "localhost", "address to bind web server") + flag.StringVar(&cfg.WebHost, "h", "localhost", "address to bind web server(shorthand)") + flag.StringVar(&cfg.WebDir, "web", "web", "static served web files.") + flag.StringVar(&cfg.WebDir, "w", "web", "static served web files (shorthand)") + flag.StringVar(&cfg.MapDir, "map", "map", "directory of prerendered tiles") + flag.StringVar(&cfg.MapDir, "m", "map", "directory of prerendered tiles (shorthand)") + flag.StringVar(&cfg.UpdateHosts, "update-hosts", "localhost", + "';' separated list of hosts which are allowed to send map update requests") + flag.StringVar(&cfg.UpdateHosts, "u", "localhost", + "';' separated list of hosts which are allowed to send map update requests (shorthand)") + flag.StringVar(&cfg.RedisHost, "redis-host", "", "address of the backend Redis server") + flag.StringVar(&cfg.RedisHost, "rh", "", "address of the backend Redis server (shorthand)") + flag.IntVar(&cfg.RedisPort, "redis-port", 6379, "port of the backend Redis server") + flag.IntVar(&cfg.RedisPort, "rp", 6379, "port of the backend Redis server (shorthand)") + flag.IntVar(&cfg.Workers, "workers", 1, "number of workers to render tiles") + flag.StringVar(&cfg.ColorsFile, "colors", "colors.txt", "colors used to render map tiles.") + flag.StringVar(&cfg.ColorsFile, "c", "colors.txt", "colors used to render map tiles (shorthand).") + flag.StringVar(&cfg.BGColor, "background", defaultBgColor, "background color") + flag.StringVar(&cfg.BGColor, "bg", defaultBgColor, "background color (shorthand)") + flag.BoolVar(&cfg.Transparent, "transparent", false, "Render transparent blocks.") + flag.BoolVar(&cfg.Transparent, "t", false, "Render transparent blocks (shorthand).") + flag.Float64Var(&cfg.TransparentDim, + "transparent-dim", common.DefaultTransparentDim*100.0, + "Extra dimming of transparent nodes each depth meter in percent.") + flag.Float64Var(&cfg.TransparentDim, + "td", common.DefaultTransparentDim*100.0, + "Extra dimming of transparent nodes each depth meter in percent. (shorthand)") + flag.BoolVar(&cfg.Websockets, "websockets", false, "Forward tile changes to clients via websockets.") + flag.BoolVar(&cfg.Websockets, "ws", false, "Forward tile changes to clients via websockets (shorthand).") + flag.StringVar(&cfg.PlayersFIFO, "players", "", "Path to FIFO file to read active players from.") + flag.StringVar(&cfg.PlayersFIFO, "ps", "", "Path to FIFO file to read active players from (shorthand).") + flag.IntVar(&cfg.YMin, "ymin", common.MinHeight, "Minimum y in blocks.") + flag.IntVar(&cfg.YMax, "ymax", common.MaxHeight, "Maximum y in blocks.") + flag.DurationVar(&cfg.ChangeDuration.Duration, + "change-duration", time.Second, "Duration to aggregate changes. (PG only)") +} + +func (cfg *config) load(fname string) error { + _, err := toml.DecodeFile(fname, &cfg) + return err +} diff --git a/cmd/mtwebmapper/forwardupdates.go b/cmd/mtwebmapper/forwardupdates.go index d492d9d..394a1c6 100644 --- a/cmd/mtwebmapper/forwardupdates.go +++ b/cmd/mtwebmapper/forwardupdates.go @@ -5,7 +5,6 @@ package main import ( - "bytes" "encoding/json" "log" "net/http" @@ -15,10 +14,9 @@ import ( type websocketForwarder struct { upgrader *websocket.Upgrader - register chan *connection - unregister chan *connection - broadcast chan msg - connections map[*connection]bool + connections map[*connection]struct{} + funcs chan func(*websocketForwarder) + init func(*websocketForwarder, *connection) } type connection struct { @@ -26,64 +24,106 @@ type connection struct { send chan []byte } -type msg struct { - tiles []xz - pls []*player -} +type ( + tilesMsg struct { + Tiles []xz `json:"tiles"` + } + plsMsg struct { + Pls []*player `json:"players"` + } +) func newWebsocketForwarder() *websocketForwarder { - upgrader := &websocket.Upgrader{ReadBufferSize: 512, WriteBufferSize: 2048} + upgrader := &websocket.Upgrader{ + ReadBufferSize: 512, + WriteBufferSize: 2048, + //CheckOrigin: func(*http.Request) bool { return true }, + } return &websocketForwarder{ upgrader: upgrader, - register: make(chan *connection), - unregister: make(chan *connection), - broadcast: make(chan msg), - connections: make(map[*connection]bool)} + connections: make(map[*connection]struct{}), + funcs: make(chan func(*websocketForwarder)), + } } func (wsf *websocketForwarder) run() { - for { - select { - case c := <-wsf.register: - wsf.connections[c] = true - case c := <-wsf.unregister: - if _, ok := wsf.connections[c]; ok { + for fn := range wsf.funcs { + fn(wsf) + } +} + +func (wsf *websocketForwarder) register(c *connection) { + wsf.funcs <- func(wsf *websocketForwarder) { + wsf.connections[c] = struct{}{} + } +} + +func (wsf *websocketForwarder) unregister(c *connection) { + wsf.funcs <- func(wsf *websocketForwarder) { + if _, ok := wsf.connections[c]; ok { + delete(wsf.connections, c) + close(c.send) + } + } +} + +func (wsf *websocketForwarder) setInit(init func(*websocketForwarder, *connection)) { + wsf.funcs <- func(wsf *websocketForwarder) { + wsf.init = init + } +} + +func (wsf *websocketForwarder) send(m interface{}) { + wsf.funcs <- func(wsf *websocketForwarder) { + if len(wsf.connections) == 0 { + return + } + + data, err := json.Marshal(m) + if err != nil { + log.Printf("encoding failed. %v\n", err) + return + } + + for c := range wsf.connections { + select { + case c.send <- data: + default: delete(wsf.connections, c) close(c.send) } - case message := <-wsf.broadcast: - if len(wsf.connections) == 0 { - continue - } - encMsg := map[string]interface{}{} - - if message.tiles != nil { - encMsg["tiles"] = message.tiles - } - - if message.pls != nil { - encMsg["players"] = message.pls - } - - var buf bytes.Buffer - encoder := json.NewEncoder(&buf) - if err := encoder.Encode(encMsg); err != nil { - log.Printf("encoding changes failed: %s\n", err) - continue - } - m := buf.Bytes() - for c := range wsf.connections { - select { - case c.send <- m: - default: - delete(wsf.connections, c) - close(c.send) - } - } } } } +func (wsf *websocketForwarder) singleSend(c *connection, m interface{}) { + wsf.funcs <- func(wsf *websocketForwarder) { + _, ok := wsf.connections[c] + if !ok { + return + } + data, err := json.Marshal(m) + if err != nil { + log.Printf("encoding failed. %v\n", err) + return + } + select { + case c.send <- data: + default: + delete(wsf.connections, c) + close(c.send) + } + } +} + +func (wsf *websocketForwarder) BaseTilesUpdated(changes []xz) { + wsf.send(&tilesMsg{Tiles: changes}) +} + +func (wsf *websocketForwarder) BroadcastPlayers(pls []*player) { + wsf.send(&plsMsg{Pls: pls}) +} + func (wsf *websocketForwarder) ServeHTTP(rw http.ResponseWriter, r *http.Request) { ws, err := wsf.upgrader.Upgrade(rw, r, nil) if err != nil { @@ -91,20 +131,15 @@ func (wsf *websocketForwarder) ServeHTTP(rw http.ResponseWriter, r *http.Request return } c := &connection{ws: ws, send: make(chan []byte, 8)} - wsf.register <- c - defer func() { wsf.unregister <- c }() + wsf.register(c) + defer wsf.unregister(c) go c.writer() + if wsf.init != nil { + wsf.init(wsf, c) + } c.reader() } -func (wsf *websocketForwarder) BaseTilesUpdated(changes []xz) { - wsf.broadcast <- msg{tiles: changes} -} - -func (wsf *websocketForwarder) BroadcastPlayers(pls []*player) { - wsf.broadcast <- msg{pls: pls} -} - func (c *connection) writer() { defer c.ws.Close() for msg := range c.send { diff --git a/cmd/mtwebmapper/main.go b/cmd/mtwebmapper/main.go index 690d2fb..901434f 100644 --- a/cmd/mtwebmapper/main.go +++ b/cmd/mtwebmapper/main.go @@ -10,7 +10,6 @@ import ( "log" "net" "net/http" - "strings" "bitbucket.org/s_l_teichmann/mtsatellite/common" @@ -18,64 +17,16 @@ import ( ) func main() { + var ( - webPort int - webHost string - webDir string - mapDir string - redisPort int - redisHost string - colorsFile string - bgColor string - workers int - transparent bool - transparentDim float64 - updateHosts string - websockets bool - playersFIFO string - version bool - yMin int - yMax int + cfg config + cfgFile string + version bool ) - defaultBgColor := common.ColorToHex(common.BackgroundColor) - - flag.IntVar(&webPort, "web-port", 8808, "port of the web server") - flag.IntVar(&webPort, "p", 8808, "port of the web server (shorthand)") - flag.StringVar(&webHost, "web-host", "localhost", "address to bind web server") - flag.StringVar(&webHost, "h", "localhost", "address to bind web server(shorthand)") - flag.StringVar(&webDir, "web", "web", "static served web files.") - flag.StringVar(&webDir, "w", "web", "static served web files (shorthand)") - flag.StringVar(&mapDir, "map", "map", "directory of prerendered tiles") - flag.StringVar(&mapDir, "m", "map", "directory of prerendered tiles (shorthand)") - flag.StringVar(&updateHosts, "update-hosts", "localhost", - "';' separated list of hosts which are allowed to send map update requests") - flag.StringVar(&updateHosts, "u", "localhost", - "';' separated list of hosts which are allowed to send map update requests (shorthand)") - flag.StringVar(&redisHost, "redis-host", "", "address of the backend Redis server") - flag.StringVar(&redisHost, "rh", "", "address of the backend Redis server (shorthand)") - flag.IntVar(&redisPort, "redis-port", 6379, "port of the backend Redis server") - flag.IntVar(&redisPort, "rp", 6379, "port of the backend Redis server (shorthand)") - flag.IntVar(&workers, "workers", 1, "number of workers to render tiles") - flag.StringVar(&colorsFile, "colors", "colors.txt", "colors used to render map tiles.") - flag.StringVar(&colorsFile, "c", "colors.txt", "colors used to render map tiles (shorthand).") - flag.StringVar(&bgColor, "background", defaultBgColor, "background color") - flag.StringVar(&bgColor, "bg", defaultBgColor, "background color (shorthand)") - flag.BoolVar(&transparent, "transparent", false, "Render transparent blocks.") - flag.BoolVar(&transparent, "t", false, "Render transparent blocks (shorthand).") - flag.Float64Var(&transparentDim, - "transparent-dim", common.DefaultTransparentDim*100.0, - "Extra dimming of transparent nodes each depth meter in percent.") - flag.Float64Var(&transparentDim, - "td", common.DefaultTransparentDim*100.0, - "Extra fimming of transparent nodes each depth meter in percent. (shorthand)") - flag.BoolVar(&websockets, "websockets", false, "Forward tile changes to clients via websockets.") - flag.BoolVar(&websockets, "ws", false, "Forward tile changes to clients via websockets (shorthand).") - flag.StringVar(&playersFIFO, "players", "", "Path to FIFO file to read active players from.") - flag.StringVar(&playersFIFO, "ps", "", "Path to FIFO file to read active players from (shorthand).") - flag.IntVar(&yMin, "ymin", common.MinHeight, "Minimum y in blocks.") - flag.IntVar(&yMax, "ymax", common.MaxHeight, "Maximum y in blocks.") + flag.StringVar(&cfgFile, "config", "", "configuration file") flag.BoolVar(&version, "version", false, "Print version and exit.") + cfg.bindFlags() flag.Parse() @@ -83,66 +34,80 @@ func main() { common.PrintVersionAndExit() } - bg := common.ParseColorDefault(bgColor, common.BackgroundColor) + if cfgFile != "" { + if err := cfg.load(cfgFile); err != nil { + log.Fatalf("error: %v\n", err) + } + } + + bg := common.ParseColorDefault(cfg.BGColor, common.BackgroundColor) router := mux.NewRouter() - subBaseLine := newSubBaseLine(mapDir, bg) + subBaseLine := newSubBaseLine(cfg.MapDir, bg) router.Path("/map/{z:[0-9]+}/{x:[0-9]+}/{y:[0-9]+}.png").Handler(subBaseLine) var btu baseTilesUpdates var wsf *websocketForwarder - if websockets { + if cfg.Websockets { wsf = newWebsocketForwarder() go wsf.run() router.Path("/ws").Methods("GET").Handler(wsf) btu = wsf } - if playersFIFO != "" { - plys := newPlayers(playersFIFO, wsf) + if cfg.PlayersFIFO != "" { + plys := newPlayers(cfg.PlayersFIFO, wsf) + wsf.setInit(plys.initConnection) go plys.run() + router.Path("/players").Methods("GET").Handler(plys) } - if redisHost != "" { + if cfg.RedisHost != "" { + var colors *common.Colors var err error - if colors, err = common.ParseColors(colorsFile); err != nil { + if colors, err = common.ParseColors(cfg.ColorsFile); err != nil { log.Fatalf("ERROR: problem loading colors: %s", err) } colors.TransparentDim = common.Clamp32f( - float32(transparentDim/100.0), 0.0, 100.0) - var redisAddress string - if strings.ContainsRune(redisHost, '/') { - redisAddress = redisHost - } else { - redisAddress = fmt.Sprintf("%s:%d", redisHost, redisPort) + float32(cfg.TransparentDim/100.0), 0.0, 100.0) + + dbcf, err := common.CreateDBClientFactory(cfg.RedisHost, cfg.RedisPort) + if err != nil { + log.Fatalf("error: %v\n", err) } + defer dbcf.Close() var allowedUpdateIps []net.IP - if allowedUpdateIps, err = ipsFromHosts(updateHosts); err != nil { + if allowedUpdateIps, err = ipsFromHosts(cfg.UpdateHosts); err != nil { log.Fatalf("ERROR: name resolving problem: %s", err) } tu := newTileUpdater( - mapDir, - redisAddress, + cfg.MapDir, + dbcf, allowedUpdateIps, colors, bg, - yMin, yMax, - transparent, - workers, + cfg.YMin, cfg.YMax, + cfg.Transparent, + cfg.Workers, btu) go tu.doUpdates() - router.Path("/update").Methods("POST").Handler(tu) + + if pgHost, ok := common.IsPostgreSQL(cfg.RedisHost); btu != nil && ok { + go tu.listen(pgHost, cfg.ChangeDuration.Duration) + } else { + router.Path("/update").Methods("POST").Handler(tu) + } } - router.PathPrefix("/").Handler(http.FileServer(http.Dir(webDir))) + router.PathPrefix("/").Handler(http.FileServer(http.Dir(cfg.WebDir))) http.Handle("/", router) - addr := fmt.Sprintf("%s:%d", webHost, webPort) + addr := fmt.Sprintf("%s:%d", cfg.WebHost, cfg.WebPort) if err := http.ListenAndServe(addr, nil); err != nil { log.Fatalf("Starting server failed: %s\n", err) } diff --git a/cmd/mtwebmapper/players.go b/cmd/mtwebmapper/players.go index 72c0982..97ad56e 100644 --- a/cmd/mtwebmapper/players.go +++ b/cmd/mtwebmapper/players.go @@ -7,6 +7,8 @@ package main import ( "bufio" "bytes" + "context" + "database/sql" "encoding/json" "html/template" "log" @@ -16,9 +18,14 @@ import ( "sort" "sync" "time" + + "bitbucket.org/s_l_teichmann/mtsatellite/common" ) -const sleepInterval = time.Second * 5 +const ( + sleepInterval = time.Second * 5 + sleepPG = time.Second +) var geoJSONTmpl = template.Must(template.New("geojson").Parse( `{ "type": "Feature", @@ -64,21 +71,39 @@ func (p *player) same(o *player) bool { math.Abs(p.Z-o.Z) < 0.000001 } -type sortPlayersByName []*player +const selectPlayersSQL = ` +SELECT posx/10.0, posy/10.0, posz/10.0, name +FROM player +WHERE modification_date > now() - '2m'::interval` -func (pls sortPlayersByName) Len() int { - return len(pls) -} - -func (pls sortPlayersByName) Less(i, j int) bool { - return pls[i].Name < pls[j].Name -} - -func (pls sortPlayersByName) Swap(i, j int) { - pls[i], pls[j] = pls[j], pls[i] +func playersFromPostgreSQL(connS string) ([]*player, error) { + time.Sleep(sleepPG) + db, err := sql.Open("pgx", connS) + if err != nil { + return nil, err + } + defer db.Close() + rows, err := db.QueryContext(context.Background(), selectPlayersSQL) + if err != nil { + return nil, err + } + defer rows.Close() + var pls []*player + for rows.Next() { + var p player + if err := rows.Scan(&p.X, &p.Y, &p.Z, &p.Name); err != nil { + return nil, err + } + pls = append(pls, &p) + } + return pls, rows.Err() } func (ps *players) readFromFIFO() ([]*player, error) { + if host, ok := common.IsPostgreSQL(ps.fifo); ok { + return playersFromPostgreSQL(host) + } + file, err := os.Open(ps.fifo) if err != nil { return nil, err @@ -108,18 +133,22 @@ func samePlayers(a, b []*player) bool { func (ps *players) run() { for { + empty := len(ps.current()) == 0 + pls, err := ps.readFromFIFO() if err != nil { //log.Printf("err: %s\n", err) time.Sleep(sleepInterval) continue } - if pls == nil { + if empty && pls == nil { //log.Println("no players") continue } //log.Printf("%+q\n", pls) - sort.Sort(sortPlayersByName(pls)) + sort.Slice(pls, func(i, j int) bool { + return pls[i].Name < pls[j].Name + }) var change bool ps.mu.Lock() //log.Printf("%+q\n", pls) @@ -129,18 +158,28 @@ func (ps *players) run() { } ps.mu.Unlock() if change && ps.wsf != nil { + if pls == nil { + pls = []*player{} + } // TODO: Throttle this! ps.wsf.BroadcastPlayers(pls) } } } +func (ps *players) current() []*player { + ps.mu.RLock() + defer ps.mu.RUnlock() + return ps.pls +} + +func (ps *players) initConnection(wsf *websocketForwarder, c *connection) { + wsf.singleSend(c, &plsMsg{Pls: ps.current()}) +} + func (ps *players) ServeHTTP(rw http.ResponseWriter, r *http.Request) { rw.Header().Set("Content-Type", "application/json") - var pls []*player - ps.mu.RLock() - pls = ps.pls - ps.mu.RUnlock() + pls := ps.current() encoder := json.NewEncoder(rw) if err := encoder.Encode(pls); err != nil { log.Printf("error: sending JSON failed: %s\n", err) diff --git a/cmd/mtwebmapper/tilesupdater.go b/cmd/mtwebmapper/tilesupdater.go index 45bddbc..a59b8b9 100644 --- a/cmd/mtwebmapper/tilesupdater.go +++ b/cmd/mtwebmapper/tilesupdater.go @@ -5,6 +5,7 @@ package main import ( + "context" "encoding/json" "image" "image/color" @@ -16,8 +17,10 @@ import ( "strconv" "strings" "sync" + "time" "github.com/bamiaux/rez" + "github.com/jackc/pgx/v4" "bytes" @@ -32,18 +35,18 @@ type baseTilesUpdates interface { } type tileUpdater struct { - changes map[xz]struct{} - btu baseTilesUpdates - mapDir string - redisAddress string - ips []net.IP - colors *common.Colors - bg color.RGBA - yMin, yMax int16 - workers int - transparent bool - cond *sync.Cond - mu sync.Mutex + changes map[xz]struct{} + btu baseTilesUpdates + mapDir string + dbcf common.DBClientFactory + ips []net.IP + colors *common.Colors + bg color.RGBA + yMin, yMax int16 + workers int + transparent bool + cond *sync.Cond + mu sync.Mutex } type xz struct { @@ -78,7 +81,8 @@ func (c xz) parent() xzm { } func newTileUpdater( - mapDir, redisAddress string, + mapDir string, + dbcf common.DBClientFactory, ips []net.IP, colors *common.Colors, bg color.RGBA, @@ -88,17 +92,17 @@ func newTileUpdater( btu baseTilesUpdates) *tileUpdater { tu := tileUpdater{ - btu: btu, - mapDir: mapDir, - redisAddress: redisAddress, - ips: ips, - changes: map[xz]struct{}{}, - colors: colors, - bg: bg, - yMin: int16(yMin), - yMax: int16(yMax), - transparent: transparent, - workers: workers} + btu: btu, + mapDir: mapDir, + dbcf: dbcf, + ips: ips, + changes: map[xz]struct{}{}, + colors: colors, + bg: bg, + yMin: int16(yMin), + yMax: int16(yMax), + transparent: transparent, + workers: workers} tu.cond = sync.NewCond(&tu.mu) return &tu } @@ -130,6 +134,60 @@ func (tu *tileUpdater) checkIP(r *http.Request) bool { return false } +func (tu *tileUpdater) listen(host string, changeDuration time.Duration) { + + xzCh := make(chan xz) + + go func() { + ctx := context.Background() + + conn, err := pgx.Connect(ctx, host) + if err != nil { + log.Printf("error: %v\n", err) + return + } + defer conn.Close(ctx) + + if _, err := conn.Exec(ctx, "listen blockchanges"); err != nil { + log.Printf("error: %v\n", err) + return + } + + for { + n, err := conn.WaitForNotification(ctx) + if err != nil { + log.Printf("error: %v\n", err) + continue + } + if n.Payload == "" { + continue + } + var c xz + dec := json.NewDecoder(strings.NewReader(n.Payload)) + if err := dec.Decode(&c); err != nil { + log.Printf("error: %v\n", err) + continue + } + xzCh <- c + } + }() + + ticker := time.NewTicker(changeDuration) + defer ticker.Stop() + + var changes []xz + + for { + select { + case c := <-xzCh: + changes = append(changes, c) + case <-ticker.C: + tu.sendChanges(changes) + changes = changes[:0] + } + } +} + func (tu *tileUpdater) ServeHTTP(rw http.ResponseWriter, r *http.Request) { if !tu.checkIP(r) { log.Printf("WARN: Unauthorized update request from '%s'\n", r.RemoteAddr) @@ -146,18 +204,23 @@ func (tu *tileUpdater) ServeHTTP(rw http.ResponseWriter, r *http.Request) { return } - if len(newChanges) > 0 { - tu.cond.L.Lock() - for _, c := range newChanges { - tu.changes[c.quantize()] = struct{}{} - } - tu.cond.L.Unlock() - tu.cond.Signal() - } + tu.sendChanges(newChanges) rw.WriteHeader(http.StatusOK) } +func (tu *tileUpdater) sendChanges(changes []xz) { + if len(changes) == 0 { + return + } + tu.cond.L.Lock() + for _, c := range changes { + tu.changes[c.quantize()] = struct{}{} + } + tu.cond.L.Unlock() + tu.cond.Signal() +} + func extractChanges(changes map[xz]struct{}) []xzc { chs := make([]xzc, len(changes)) var i int @@ -196,20 +259,14 @@ func (tu *tileUpdater) doUpdates() { jobs := make(chan *xzc) var done sync.WaitGroup - var proto string - if strings.ContainsRune(tu.redisAddress, '/') { - proto = "unix" - } else { - proto = "tcp" - } - for i, n := 0, common.Min(tu.workers, len(changes)); i < n; i++ { - var client *common.RedisClient + var client common.DBClient var err error - if client, err = common.NewRedisClient(proto, tu.redisAddress); err != nil { + if client, err = tu.dbcf.Create(); err != nil { log.Printf("WARN: Cannot connect to redis server: %s\n", err) continue } + btc := common.NewBaseTileCreator( client, tu.colors, tu.bg, tu.yMin, tu.yMax, @@ -343,26 +400,30 @@ func (tu *tileUpdater) updateBaseTiles( update common.BaseTileUpdateFunc) { type jobWriter struct { - job *xzc - wFn func() (bool, error) + canceled *bool + wFn func() (bool, error) } jWs := make(chan jobWriter) + asyncWrite := make(chan struct{}) + go func() { + defer close(asyncWrite) + for jw := range jWs { updated, err := jw.wFn() if err != nil { + *jw.canceled = true log.Printf("WARN: writing tile failed: %v.\n", err) } if !updated { - jw.job.canceled = true + *jw.canceled = true } } }() defer func() { - close(jWs) btc.Close() done.Done() }() @@ -374,6 +435,13 @@ func (tu *tileUpdater) updateBaseTiles( job.canceled = true continue } - jWs <- jobWriter{job, btc.WriteFunc(int(job.X), int(job.Z), update)} + jWs <- jobWriter{ + &job.canceled, + btc.WriteFunc(int(job.X), int(job.Z), update), + } } + + close(jWs) + // Wait until all tiles are written. + <-asyncWrite } diff --git a/common/basetilecreator.go b/common/basetilecreator.go index 264ee6c..c3fb367 100644 --- a/common/basetilecreator.go +++ b/common/basetilecreator.go @@ -52,7 +52,7 @@ var BackgroundColor = color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff} type BaseTileUpdateFunc func(x, y int, hash []byte) bool type BaseTileCreator struct { - client *RedisClient + client DBClient colors *Colors renderer *Renderer yOrder *YOrder @@ -64,7 +64,7 @@ type BaseTileCreator struct { } func NewBaseTileCreator( - client *RedisClient, + client DBClient, colors *Colors, bg color.RGBA, yMin, yMax int16, @@ -200,7 +200,7 @@ func (btc *BaseTileCreator) WriteFunc(i, j int, update BaseTileUpdateFunc) func( return true, SaveAsPNGAtomic(path, image) } - log.Printf("(%d, %d) is unchanged.\n", x, z) + //log.Printf("(%d, %d) is unchanged.\n", x, z) return false, nil } } diff --git a/common/clientfactory.go b/common/clientfactory.go new file mode 100644 index 0000000..35333bc --- /dev/null +++ b/common/clientfactory.go @@ -0,0 +1,35 @@ +// Copyright 2022 by Sascha L. Teichmann +// Use of this source code is governed by the MIT license +// that can be found in the LICENSE file. + +package common + +import ( + "strings" +) + +type DBClient interface { + QueryCuboid(cuboid Cuboid, fn func(*Block) *Block) (count int, err error) + Close() error +} + +type DBClientFactory interface { + Create() (DBClient, error) + Close() error +} + +func IsPostgreSQL(host string) (string, bool) { + if strings.HasPrefix(host, "postgres:") { + return host[len("postgres:"):], true + } + return "", false +} + +func CreateDBClientFactory(host string, port int) (DBClientFactory, error) { + + if connS, ok := IsPostgreSQL(host); ok { + return NewPGClientFactory(connS) + } + + return NewRedisClientFactory(host, port) +} diff --git a/common/pgclient.go b/common/pgclient.go new file mode 100644 index 0000000..7c691b3 --- /dev/null +++ b/common/pgclient.go @@ -0,0 +1,117 @@ +// Copyright 2022 by Sascha L. Teichmann +// Use of this source code is governed by the MIT license +// that can be found in the LICENSE file. + +package common + +import ( + "context" + "database/sql" + + _ "github.com/jackc/pgx/v4/stdlib" +) + +const queryCuboidSQL = ` +SELECT posx, posy, posz, data FROM blocks +WHERE + posx BETWEEN $1 AND $2 AND + posy BETWEEN $3 AND $4 AND + posz BETWEEN $5 AND $6` + +type PGClient struct { + conn *sql.Conn + queryCuboidStmt *sql.Stmt +} + +type PGClientFactory struct { + db *sql.DB +} + +func NewPGClientFactory(connS string) (*PGClientFactory, error) { + db, err := sql.Open("pgx", connS) + if err != nil { + return nil, err + } + return &PGClientFactory{db: db}, nil +} + +func (pgcf *PGClientFactory) Close() error { + return pgcf.db.Close() +} + +func (pgcf *PGClientFactory) Create() (DBClient, error) { + + ctx := context.Background() + + conn, err := pgcf.db.Conn(ctx) + if err != nil { + return nil, err + } + stmt, err := conn.PrepareContext(ctx, queryCuboidSQL) + if err != nil { + conn.Close() + return nil, err + } + return &PGClient{ + conn: conn, + queryCuboidStmt: stmt, + }, nil +} + +func (pgc *PGClient) QueryCuboid( + cuboid Cuboid, + fn func(*Block) *Block, +) (int, error) { + + rows, err := pgc.queryCuboidStmt.QueryContext( + context.Background(), + cuboid.P1.X, cuboid.P2.X, + cuboid.P1.Y, cuboid.P2.Y, + cuboid.P1.Z, cuboid.P2.Z) + + if err != nil { + return 0, err + } + defer rows.Close() + + var ( + posX, posY, posZ int + data []byte + count int + block *Block + ) + + for ; rows.Next(); count++ { + if err := rows.Scan( + &posX, &posY, &posZ, + &data, + ); err != nil { + return count, err + } + c := Coord{ + X: int16(posX), + Y: int16(posY), + Z: int16(posZ), + } + + if block == nil { + block = &Block{Coord: c, Data: data} + } else { + *block = Block{Coord: c, Data: data} + } + if block = fn(block); block != nil { + data = block.Data[:0] + } else { + data = nil + } + } + + return count, rows.Err() +} + +func (pgc *PGClient) Close() error { + if pgc.queryCuboidStmt != nil { + pgc.queryCuboidStmt.Close() + } + return pgc.conn.Close() +} diff --git a/common/redisclient.go b/common/redisclient.go index 23c04bb..b4d36c6 100644 --- a/common/redisclient.go +++ b/common/redisclient.go @@ -11,9 +11,43 @@ import ( "fmt" "net" "strconv" + "strings" "unicode" ) +type RedisClientFactory struct { + proto string + address string +} + +func NewRedisClientFactory(host string, port int) (*RedisClientFactory, error) { + var address string + if strings.ContainsRune(host, '/') { + address = host + } else { + address = fmt.Sprintf("%s:%d", host, port) + } + + var proto string + if strings.ContainsRune(address, '/') { + proto = "unix" + } else { + proto = "tcp" + } + return &RedisClientFactory{ + proto: proto, + address: address, + }, nil +} + +func (rcf *RedisClientFactory) Close() error { + return nil +} + +func (rcf *RedisClientFactory) Create() (DBClient, error) { + return NewRedisClient(rcf.proto, rcf.address) +} + type RedisClient struct { conn net.Conn reader *bufio.Reader diff --git a/go.mod b/go.mod index 008c27d..155d8f8 100644 --- a/go.mod +++ b/go.mod @@ -3,10 +3,14 @@ module bitbucket.org/s_l_teichmann/mtsatellite go 1.13 require ( + github.com/BurntSushi/toml v1.0.0 // indirect github.com/bamiaux/rez v0.0.0-20170731184118-29f4463c688b - github.com/gorilla/mux v1.7.3 - github.com/gorilla/websocket v1.4.1 + github.com/gorilla/mux v1.8.0 + github.com/gorilla/websocket v1.5.0 + github.com/jackc/pgx/v4 v4.15.0 github.com/jmhodges/levigo v1.0.0 - github.com/mattn/go-sqlite3 v1.12.0 - golang.org/x/crypto v0.0.0-20191128160524-b544559bb6d1 + github.com/mattn/go-sqlite3 v1.14.11 + golang.org/x/crypto v0.0.0-20220214200702-86341886e292 + golang.org/x/sys v0.0.0-20220224120231-95c6836cb0e7 // indirect + golang.org/x/text v0.3.7 // indirect ) diff --git a/go.sum b/go.sum index 9106b20..83f3915 100644 --- a/go.sum +++ b/go.sum @@ -1,18 +1,199 @@ +github.com/BurntSushi/toml v0.3.1/go.mod 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AFTER INSERT OR UPDATE + ON blocks + FOR EACH ROW + EXECUTE PROCEDURE send_block_changes(); + +END;