init

2019-12-04 17:15:11 +01:00
commit d9e7f1a986
64 changed files with 6442 additions and 0 deletions
@@ -0,0 +1,185 @@
+package command
+
+import (
+	"context"
+	"os"
+	"os/signal"
+	"time"
+
+	"contrib.go.opencensus.io/exporter/jaeger"
+	"contrib.go.opencensus.io/exporter/ocagent"
+	"contrib.go.opencensus.io/exporter/zipkin"
+	"github.com/micro/cli"
+	"github.com/micro/go-micro/util/log"
+	"github.com/oklog/run"
+	openzipkin "github.com/openzipkin/zipkin-go"
+	zipkinhttp "github.com/openzipkin/zipkin-go/reporter/http"
+	"github.com/owncloud/ocis-graph/pkg/config"
+	"github.com/owncloud/ocis-graph/pkg/flagset"
+	"github.com/owncloud/ocis-graph/pkg/server/debug"
+	"github.com/owncloud/ocis-graph/pkg/server/http"
+	"go.opencensus.io/stats/view"
+	"go.opencensus.io/trace"
+)
+
+// Server is the entrypoint for the server command.
+func Server(cfg *config.Config) cli.Command {
+	return cli.Command{
+		Name:  "server",
+		Usage: "Start integrated server",
+		Flags: flagset.ServerWithConfig(cfg),
+		Action: func(c *cli.Context) error {
+			if cfg.Tracing.Enabled {
+				switch t := cfg.Tracing.Type; t {
+				case "agent":
+					exporter, err := ocagent.NewExporter(
+						ocagent.WithReconnectionPeriod(5*time.Second),
+						ocagent.WithAddress(cfg.Tracing.Endpoint),
+						ocagent.WithServiceName(cfg.Tracing.Service),
+					)
+
+					if err != nil {
+						log.Error(
+							"Failed to create agent tracing on [%s] endpoint and [%s] collector: %w",
+							cfg.Tracing.Endpoint,
+							cfg.Tracing.Collector,
+							err,
+						)
+
+						return err
+					}
+
+					trace.RegisterExporter(exporter)
+					view.RegisterExporter(exporter)
+
+				case "jaeger":
+					exporter, err := jaeger.NewExporter(
+						jaeger.Options{
+							AgentEndpoint:     cfg.Tracing.Endpoint,
+							CollectorEndpoint: cfg.Tracing.Collector,
+							ServiceName:       cfg.Tracing.Service,
+						},
+					)
+
+					if err != nil {
+						log.Error(
+							"Failed to create jaeger tracing on [%s] endpoint and [%s] collector: %w",
+							cfg.Tracing.Endpoint,
+							cfg.Tracing.Collector,
+							err,
+						)
+
+						return err
+					}
+
+					trace.RegisterExporter(exporter)
+
+				case "zipkin":
+					endpoint, err := openzipkin.NewEndpoint(
+						cfg.Tracing.Service,
+						cfg.Tracing.Endpoint,
+					)
+
+					if err != nil {
+						log.Error(
+							"Failed to create zipkin tracing on [%s] endpoint and [%s] collector: %w",
+							cfg.Tracing.Endpoint,
+							cfg.Tracing.Collector,
+							err,
+						)
+
+						return err
+					}
+
+					exporter := zipkin.NewExporter(
+						zipkinhttp.NewReporter(
+							cfg.Tracing.Collector,
+						),
+						endpoint,
+					)
+
+					trace.RegisterExporter(exporter)
+
+				default:
+					log.Warnf("Unknown tracing backend [%s]", t)
+				}
+
+				trace.ApplyConfig(
+					trace.Config{
+						DefaultSampler: trace.AlwaysSample(),
+					},
+				)
+			} else {
+				log.Debug("Tracing is not enabled")
+			}
+
+			var (
+				gr          = run.Group{}
+				ctx, cancel = context.WithCancel(context.Background())
+			)
+
+			{
+				server, err := http.Server(
+					http.Context(ctx),
+					http.Config(cfg),
+				)
+
+				if err != nil {
+					log.Errorf("Server [http] failed to initialize: %w", err)
+					return err
+				}
+
+				gr.Add(func() error {
+					return server.Run()
+				}, func(_ error) {
+					log.Infof("Server [http] shutting down")
+					cancel()
+				})
+			}
+
+			{
+				server, err := debug.Server(
+					debug.Context(ctx),
+					debug.Config(cfg),
+				)
+
+				if err != nil {
+					log.Errorf("Server [debug] failed to initialize: %w", err)
+					return err
+				}
+
+				gr.Add(func() error {
+					return server.ListenAndServe()
+				}, func(_ error) {
+					ctx, timeout := context.WithTimeout(ctx, 5*time.Second)
+
+					defer timeout()
+					defer cancel()
+
+					if err := server.Shutdown(ctx); err != nil {
+						log.Errorf("Server [debug] shutdown failed: %w", err)
+					} else {
+						log.Infof("Server [debug] shutting down")
+					}
+				})
+			}
+
+			{
+				stop := make(chan os.Signal, 1)
+
+				gr.Add(func() error {
+					signal.Notify(stop, os.Interrupt)
+
+					<-stop
+
+					return nil
+				}, func(err error) {
+					close(stop)
+					cancel()
+				})
+			}
+
+			return gr.Run()
+		},
+	}
+}