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HttpServer.go
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HttpServer.go
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package lib
import (
"context"
"encoding/json"
"github.com/mbaynton/SimplePuppetProvisioner/lib/certsign"
"github.com/mbaynton/SimplePuppetProvisioner/lib/genericexec"
"net/http"
"time"
)
type HttpServer struct {
appConfig AppConfig
notifier *Notifications
certSigner *certsign.CertSigner
execManager *genericexec.GenericExecManager
server http.Server
startTime time.Time
}
func NewHttpServer(config AppConfig, notifier *Notifications, certSigner *certsign.CertSigner, execManager *genericexec.GenericExecManager) *HttpServer {
server := new(HttpServer)
server.appConfig = config
server.notifier = notifier
server.certSigner = certSigner
server.execManager = execManager
return server
}
func (c *HttpServer) Start() {
router := http.NewServeMux()
c.createRoutes(router)
c.server = http.Server{Addr: c.appConfig.BindAddress, Handler: router, ErrorLog: c.appConfig.Log}
c.startTime = time.Now()
c.server.ListenAndServe()
}
func (c *HttpServer) Shutdown(ctx context.Context) error {
return c.server.Shutdown(ctx)
}
func (c *HttpServer) createRoutes(router *http.ServeMux) {
router.Handle("/stats", http.HandlerFunc(c.internalStatsHandler))
router.Handle("/webhook", NewGithubWebhookHttpHandler(c.appConfig.GithubWebhooks, c.execManager, c.appConfig.Log))
protectionMiddlewareFactory := NewHttpProtectionMiddlewareFactory(c.appConfig)
protectedRoutes := http.NewServeMux()
provisionHandler := NewProvisionHttpHandler(&c.appConfig, c.notifier, c.certSigner, c.execManager)
protectedRoutes.Handle("/provision", provisionHandler)
// If it didn't match an unprotected route, it goes through the protection middleware.
router.Handle("/", protectionMiddlewareFactory.WrapInProtectionMiddleware(protectedRoutes))
}
func (c *HttpServer) internalStatsHandler(response http.ResponseWriter, request *http.Request) {
type statsResponseType struct {
Uptime string `json:"uptime"`
CertSigningBacklog int `json:"cert-signing-backlog"`
}
statsResponse := new(statsResponseType)
// Compute uptime.
t := time.Now()
statsResponse.Uptime = t.Sub(c.startTime).String()
statsResponse.CertSigningBacklog = c.certSigner.ProcessingBacklogLength()
response.Header().Set("Content-Type", "application/json")
jsonWriter := json.NewEncoder(response)
if err := jsonWriter.Encode(&statsResponse); err != nil {
response.WriteHeader(http.StatusInternalServerError)
}
}