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server.go
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server.go
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package server
import (
"fmt"
"net/http"
"os"
"code.cloudfoundry.org/app-autoscaler/src/autoscaler/eventgenerator/aggregator"
"code.cloudfoundry.org/app-autoscaler/src/autoscaler/eventgenerator/config"
"code.cloudfoundry.org/app-autoscaler/src/autoscaler/healthendpoint"
"code.cloudfoundry.org/app-autoscaler/src/autoscaler/routes"
"code.cloudfoundry.org/cfhttp"
"code.cloudfoundry.org/lager"
"github.com/gorilla/mux"
"github.com/tedsuo/ifrit"
"github.com/tedsuo/ifrit/http_server"
)
type VarsFunc func(w http.ResponseWriter, r *http.Request, vars map[string]string)
func (vh VarsFunc) ServeHTTP(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
vh(w, r, vars)
}
func NewServer(logger lager.Logger, conf *config.Config, queryAppMetric aggregator.QueryAppMetricsFunc, httpStatusCollector healthendpoint.HTTPStatusCollector) (ifrit.Runner, error) {
eh := NewEventGenHandler(logger, queryAppMetric)
httpStatusCollectMiddleware := healthendpoint.NewHTTPStatusCollectMiddleware(httpStatusCollector)
r := routes.EventGeneratorRoutes()
r.Use(httpStatusCollectMiddleware.Collect)
r.Get(routes.GetAggregatedMetricHistoriesRouteName).Handler(VarsFunc(eh.GetAggregatedMetricHistories))
var addr string
if os.Getenv("APP_AUTOSCALER_TEST_RUN") == "true" {
addr = fmt.Sprintf("localhost:%d", conf.Server.Port)
} else {
addr = fmt.Sprintf("0.0.0.0:%d", conf.Server.Port)
}
var runner ifrit.Runner
if (conf.Server.TLS.KeyFile == "") || (conf.Server.TLS.CertFile == "") {
runner = http_server.New(addr, r)
} else {
tlsConfig, err := cfhttp.NewTLSConfig(conf.Server.TLS.CertFile, conf.Server.TLS.KeyFile, conf.Server.TLS.CACertFile)
if err != nil {
logger.Error("failed-new-server-new-tls-config", err, lager.Data{"tls": conf.Server.TLS})
return nil, err
}
runner = http_server.NewTLSServer(addr, r, tlsConfig)
}
logger.Info("http-server-created", lager.Data{"serverConfig": conf.Server})
return runner, nil
}