136 lines
3.1 KiB
Go
136 lines
3.1 KiB
Go
package merp
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import "encoding/json"
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import "fmt"
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import "net/http"
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import "os"
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import "regexp"
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import "strconv"
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import "time"
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import "github.com/didip/tollbooth"
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import "github.com/didip/tollbooth_gin"
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import "github.com/gin-gonic/gin"
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import "github.com/dn365/gin-zerolog"
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import "github.com/thoas/stats"
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import "github.com/astaxie/beego/orm"
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import _ "github.com/lib/pq" //revive:disable-line
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type MerpServer struct {
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db orm.Ormer
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debug bool
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gin *gin.Engine
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port uint
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server *http.Server
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stats *stats.Stats
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thingRegex *regexp.Regexp
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}
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func NewMerpServer() *MerpServer {
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ms := new(MerpServer)
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ms.init()
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return ms
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}
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func (ms *MerpServer) init() {
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ms.thingRegex = regexp.MustCompile(`^[a-zA-Z0-9\_\-]+$`)
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if os.Getenv("DEBUG") != "" {
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ms.debug = true
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}
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ms.port = 8080
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var s uint64
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var err error
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if os.Getenv("PORT") != "" {
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if s, err = strconv.ParseUint(os.Getenv("PORT"), 10, 64); err == nil {
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} else {
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panic("invalid PORT in environment")
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}
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ms.port = uint(s)
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}
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ms.connectDB()
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ms.setupRoutes()
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ms.server = &http.Server{
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Addr: fmt.Sprintf(":%s", ms.port),
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Handler: ms.gin,
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ReadTimeout: 10 * time.Second,
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WriteTimeout: 10 * time.Second,
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MaxHeaderBytes: 1 << 20,
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}
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}
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func (ms *MerpServer) connectDB() {
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ms.db = GetDB()
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}
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// ServeForever causes merp to serve http forever
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func (ms *MerpServer) ServeForever() {
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ms.server.ListenAndServe()
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}
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func (ms *MerpServer) HealthCheckHandler() http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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result := gin.H{
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"status": "ok",
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"now": time.Now().UTC().Format(time.RFC3339),
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}
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json, err := json.Marshal(result)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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w.Write(json)
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}
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}
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func (ms *MerpServer) StatsHandler() http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "application/json")
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stats := ms.stats.Data()
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b, _ := json.Marshal(stats)
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w.Write(b)
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}
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}
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func (ms *MerpServer) setupRoutes() {
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if !ms.debug {
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gin.SetMode(gin.ReleaseMode)
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}
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limiter := tollbooth.NewLimiter(5, nil)
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ms.stats = stats.New()
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// empty router
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r := gin.New()
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// wrap panics:
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r.Use(gin.Recovery())
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// attach logger middleware
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r.Use(ginzerolog.Logger("gin"))
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r.Use(func(c *gin.Context) {
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beginning, recorder := ms.stats.Begin(c.Writer)
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c.Next()
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ms.stats.End(beginning, stats.WithRecorder(recorder))
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})
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r.GET("/.well-known/healthcheck.json", gin.WrapF(ms.HealthCheckHandler()))
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r.GET("/admin/healthcheck.json", gin.WrapF(ms.HealthCheckHandler()))
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r.GET("/admin/stats.json", gin.WrapF(ms.StatsHandler()))
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r.GET("/admin/other.json", gin.WrapF(ms.StatsHandler()))
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r.GET("/merp/for/:thing", tollbooth_gin.LimitHandler(limiter), ms.handleNewMerp())
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r.GET("/get/latest/merp/for/:thing", tollbooth_gin.LimitHandler(limiter), ms.getLatestMerps())
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r.GET("/get/latest/merps", tollbooth_gin.LimitHandler(limiter), ms.getLatestMerps())
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r.GET("/get/merps/for/:thing", tollbooth_gin.LimitHandler(limiter), ms.getLatestMerps())
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ms.gin = r
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}
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