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https://github.com/0ceanSlim/grain.git
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config watcher, restart server on change
This commit is contained in:
parent
d81d78e25f
commit
22729612ff
2
go.mod
2
go.mod
@ -12,6 +12,7 @@ require (
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require (
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github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
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github.com/kr/pretty v0.3.1 // indirect
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golang.org/x/sys v0.22.0 // indirect
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gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
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)
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@ -31,4 +32,5 @@ require (
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golang.org/x/sync v0.7.0 // indirect
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golang.org/x/text v0.16.0 // indirect
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golang.org/x/time v0.5.0
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gopkg.in/fsnotify.v1 v1.4.7
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)
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4
go.sum
4
go.sum
@ -21,6 +21,7 @@ github.com/decred/dcrd/crypto/blake256 v1.0.0 h1:/8DMNYp9SGi5f0w7uCm6d6M4OU2rGFK
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github.com/decred/dcrd/crypto/blake256 v1.0.0/go.mod h1:sQl2p6Y26YV+ZOcSTP6thNdn47hh8kt6rqSlvmrXFAc=
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github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 h1:YLtO71vCjJRCBcrPMtQ9nqBsqpA1m5sE92cU+pd5Mcc=
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github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1/go.mod h1:hyedUtir6IdtD/7lIxGeCxkaw7y45JueMRL4DIyJDKs=
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github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
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github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
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github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
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github.com/golang/snappy v0.0.4 h1:yAGX7huGHXlcLOEtBnF4w7FQwA26wojNCwOYAEhLjQM=
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@ -82,6 +83,8 @@ golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7w
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golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.22.0 h1:RI27ohtqKCnwULzJLqkv897zojh5/DwS/ENaMzUOaWI=
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golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
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golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
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golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
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golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
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@ -99,6 +102,7 @@ golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8T
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
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gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
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gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
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gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
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gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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40
main.go
40
main.go
@ -11,6 +11,10 @@ import (
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"grain/server/utils"
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"log"
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"net/http"
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"os"
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"os/signal"
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"sync"
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"syscall"
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"time"
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"golang.org/x/net/websocket"
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@ -20,6 +24,15 @@ func main() {
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utils.EnsureFileExists("config.yml", "app/static/examples/config.example.yml")
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utils.EnsureFileExists("relay_metadata.json", "app/static/examples/relay_metadata.example.json")
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restartChan := make(chan struct{})
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go utils.WatchConfigFile("config.yml", restartChan)
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signalChan := make(chan os.Signal, 1)
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signal.Notify(signalChan, syscall.SIGINT, syscall.SIGTERM)
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var wg sync.WaitGroup
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for {
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wg.Add(1)
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cfg, err := config.LoadConfig("config.yml")
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if err != nil {
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log.Fatal("Error loading config: ", err)
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@ -29,7 +42,6 @@ func main() {
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if err != nil {
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log.Fatal("Error initializing database: ", err)
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}
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defer db.DisconnectDB(client)
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config.SetupRateLimiter(cfg)
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config.SetupSizeLimiter(cfg)
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@ -40,8 +52,23 @@ func main() {
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}
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mux := setupRoutes()
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server := startServer(cfg, mux, &wg)
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startServer(cfg, mux)
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select {
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case <-restartChan:
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log.Println("Restarting server...")
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server.Close()
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db.DisconnectDB(client)
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wg.Wait() // Wait for the server to fully shut down before restarting
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time.Sleep(3 * time.Second) // Add a delay before restarting
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case <-signalChan:
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log.Println("Shutting down server...")
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server.Close()
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db.DisconnectDB(client)
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wg.Wait() // Wait for the server to fully shut down before exiting
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return
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}
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}
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}
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func setupRoutes() *http.ServeMux {
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@ -56,7 +83,7 @@ func setupRoutes() *http.ServeMux {
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return mux
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}
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func startServer(config *configTypes.ServerConfig, mux *http.ServeMux) {
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func startServer(config *configTypes.ServerConfig, mux *http.ServeMux, wg *sync.WaitGroup) *http.Server {
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server := &http.Server{
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Addr: config.Server.Port,
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Handler: mux,
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@ -64,11 +91,16 @@ func startServer(config *configTypes.ServerConfig, mux *http.ServeMux) {
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WriteTimeout: time.Duration(config.Server.WriteTimeout) * time.Second,
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IdleTimeout: time.Duration(config.Server.IdleTimeout) * time.Second,
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}
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go func() {
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defer wg.Done() // Notify that the server is done shutting down
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fmt.Printf("Server is running on http://localhost%s\n", config.Server.Port)
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err := server.ListenAndServe()
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if err != nil {
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if err != nil && err != http.ErrServerClosed {
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fmt.Println("Error starting server:", err)
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}
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}()
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return server
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}
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var wsServer = &websocket.Server{
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52
server/utils/watchConfig.go
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52
server/utils/watchConfig.go
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@ -0,0 +1,52 @@
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package utils
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import (
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"fmt"
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"log"
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"time"
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"gopkg.in/fsnotify.v1"
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)
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func WatchConfigFile(filePath string, restartChan chan<- struct{}) {
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watcher, err := fsnotify.NewWatcher()
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if err != nil {
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log.Fatal("Error creating file watcher:", err)
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}
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defer watcher.Close()
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err = watcher.Add(filePath)
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if err != nil {
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log.Fatal("Error adding file to watcher:", err)
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}
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var debounceTimer *time.Timer
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debounceDuration := 1 * time.Second // Adjust this duration as needed
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for {
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select {
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case event, ok := <-watcher.Events:
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if !ok {
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return
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}
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if event.Op&fsnotify.Write == fsnotify.Write {
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if debounceTimer != nil {
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debounceTimer.Stop() // Cancel the previous timer
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}
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debounceTimer = time.AfterFunc(debounceDuration, func() {
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fmt.Println("Config file modified, restarting server...")
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select {
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case restartChan <- struct{}{}:
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default:
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// Skip sending restart signal if there's already one in the channel
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}
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})
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}
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case err, ok := <-watcher.Errors:
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if !ok {
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return
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}
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log.Println("Error watching file:", err)
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}
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}
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}
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