93 lines
2.1 KiB
Go
93 lines
2.1 KiB
Go
package proxy
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import (
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"net/http"
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"strconv"
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"strings"
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"time"
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ginzap "github.com/gin-contrib/zap"
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gin "github.com/gin-gonic/gin"
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zap "go.uber.org/zap"
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)
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// ServerOptions provides configuration for Server method
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type ServerOptions struct {
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ListenAddress string
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Silent bool
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GetOptions func() (Options, error)
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}
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// Server creates http proxy server
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func (proxy Proxy) Server(options ServerOptions) *http.Server {
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gin.SetMode("release")
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router := gin.New()
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if options.Silent {
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router.Use(gin.Recovery())
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} else {
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logger, _ := zap.NewProduction()
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router.Use(ginzap.Ginzap(logger, time.RFC3339, true))
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router.Use(ginzap.RecoveryWithZap(logger, true))
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}
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router.GET("/:scope/:name", proxy.getPackageHandler(options))
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router.GET("/:scope", proxy.getPackageHandler(options))
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router.NoRoute(proxy.noRouteHandler(options))
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return &http.Server{
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Handler: router,
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Addr: options.ListenAddress,
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}
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}
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func (proxy Proxy) getPackageHandler(options ServerOptions) gin.HandlerFunc {
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return func(c *gin.Context) {
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options, err := options.GetOptions()
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if err != nil {
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c.AbortWithError(500, err)
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} else {
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pkg, err := proxy.GetCachedPath(options, c.Request.URL.Path, c.Request)
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if err != nil {
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c.AbortWithError(500, err)
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} else {
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c.Header("Cache-Control", "public, max-age="+strconv.Itoa(int(options.DatabaseExpiration.Seconds())))
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c.Data(200, "application/json", pkg)
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}
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}
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}
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}
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func (proxy Proxy) noRouteHandler(options ServerOptions) gin.HandlerFunc {
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tarballHandler := proxy.getPackageHandler(options)
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return func(c *gin.Context) {
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if strings.Contains(c.Request.URL.Path, ".tgz") {
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// get tarball
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tarballHandler(c)
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} else if c.Request.URL.Path == "/" {
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// get health
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err := proxy.Database.Health()
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if err != nil {
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c.AbortWithStatusJSON(503, err)
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} else {
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c.AbortWithStatusJSON(200, gin.H{"ok": true})
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}
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} else {
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// redirect
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options, err := options.GetOptions()
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if err != nil {
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c.AbortWithStatusJSON(500, err)
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} else {
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c.Redirect(http.StatusTemporaryRedirect, options.UpstreamAddress+c.Request.URL.Path)
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}
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}
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}
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}
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