[WIP] add debug server to activitylog & check web availability

Signed-off-by: Christian Richter <[email protected]>

services/activitylog/pkg/server/debug/options.go

@@ -0,0 +1,50 @@
+package debug
+
+import (
+	"context"
+
+	"github.com/owncloud/ocis/v2/ocis-pkg/log"
+	"github.com/owncloud/ocis/v2/services/idm/pkg/config"
+)
+
+// Option defines a single option function.
+type Option func(o *Options)
+
+// Options defines the available options for this package.
+type Options struct {
+	Logger  log.Logger
+	Context context.Context
+	Config  *config.Config
+}
+
+// newOptions initializes the available default options.
+func newOptions(opts ...Option) Options {
+	opt := Options{}
+
+	for _, o := range opts {
+		o(&opt)
+	}
+
+	return opt
+}
+
+// Logger provides a function to set the logger option.
+func Logger(val log.Logger) Option {
+	return func(o *Options) {
+		o.Logger = val
+	}
+}
+
+// Context provides a function to set the context option.
+func Context(val context.Context) Option {
+	return func(o *Options) {
+		o.Context = val
+	}
+}
+
+// Config provides a function to set the config option.
+func Config(val *config.Config) Option {
+	return func(o *Options) {
+		o.Config = val
+	}
+}

services/activitylog/pkg/server/debug/server.go

@@ -0,0 +1,31 @@
+package debug
+
+import (
+	"net/http"
+
+	"github.com/owncloud/ocis/v2/ocis-pkg/handlers"
+	"github.com/owncloud/ocis/v2/ocis-pkg/service/debug"
+	"github.com/owncloud/ocis/v2/ocis-pkg/version"
+)
+
+// Server initializes the debug service and server.
+func Server(opts ...Option) (*http.Server, error) {
+	options := newOptions(opts...)
+
+	checkHandler := handlers.NewCheckHandler(
+		handlers.NewCheckHandlerConfiguration().
+			WithLogger(options.Logger),
+	)
+
+	return debug.NewService(
+		debug.Logger(options.Logger),
+		debug.Name(options.Config.Service.Name),
+		debug.Version(version.GetString()),
+		debug.Address(options.Config.Debug.Addr),
+		debug.Token(options.Config.Debug.Token),
+		debug.Pprof(options.Config.Debug.Pprof),
+		debug.Zpages(options.Config.Debug.Zpages),
+		debug.Health(checkHandler),
+		debug.Ready(checkHandler),
+	), nil
+}

services/web/pkg/server/debug/server.go

@@ -1,6 +1,9 @@
 package debug
 
 import (
+	"context"
+	"fmt"
+	"net"
 	"net/http"
 
 	"github.com/owncloud/ocis/v2/ocis-pkg/handlers"
@@ -14,7 +17,20 @@ func Server(opts ...Option) (*http.Server, error) {
 
 	checkHandler := handlers.NewCheckHandler(
 		handlers.NewCheckHandlerConfiguration().
-			WithLogger(options.Logger),
+			WithLogger(options.Logger).WithCheck("web reachability", func(ctx context.Context) error {
+			conn, err := net.Dial("tcp", options.Config.HTTP.Addr)
+			defer func(conn net.Conn) {
+				err := conn.Close()
+				if err != nil {
+					return
+				}
+			}(conn)
+			if err != nil {
+				return fmt.Errorf("could not connect to web server: %v", err)
+			}
+
+			return nil
+		}),
 	)
 
 	return debug.NewService(