add debug to audit

Signed-off-by: Christian Richter <crichter@owncloud.com>

changelog/unreleased/add-debug-to-audit.md

@@ -0,0 +1,6 @@
+Enhancement: Add debug server to audit
+
+We added a debug server to audit.
+
+https://github.com/owncloud/ocis/pull/6178
+https://github.com/owncloud/ocis/issues/5002

services/audit/pkg/command/server.go

@@ -10,8 +10,12 @@ import (
 	"github.com/cs3org/reva/v2/pkg/events"
 	"github.com/cs3org/reva/v2/pkg/events/stream"
 	"github.com/go-micro/plugins/v4/events/natsjs"
+	"github.com/oklog/run"
 	"github.com/owncloud/ocis/v2/ocis-pkg/config/configlog"
 	ociscrypto "github.com/owncloud/ocis/v2/ocis-pkg/crypto"
+	"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"
 	"github.com/owncloud/ocis/v2/services/audit/pkg/config"
 	"github.com/owncloud/ocis/v2/services/audit/pkg/config/parser"
 	"github.com/owncloud/ocis/v2/services/audit/pkg/logging"
@@ -30,13 +34,17 @@ func Server(cfg *config.Config) *cli.Command {
 			return configlog.ReturnFatal(parser.ParseConfig(cfg))
 		},
 		Action: func(c *cli.Context) error {
-			logger := logging.Configure(cfg.Service.Name, cfg.Log)
+			var (
+				gr     = run.Group{}
+				logger = logging.Configure(cfg.Service.Name, cfg.Log)
 
-			ctx := cfg.Context
-			if ctx == nil {
-				ctx = context.Background()
-			}
-			ctx, cancel := context.WithCancel(ctx)
+				ctx, cancel = func() (context.Context, context.CancelFunc) {
+					if cfg.Context == nil {
+						return context.WithCancel(context.Background())
+					}
+					return context.WithCancel(cfg.Context)
+				}()
+			)
 			defer cancel()
 
 			evtsCfg := cfg.Events
@@ -76,8 +84,35 @@ func Server(cfg *config.Config) *cli.Command {
 				return err
 			}
 
-			svc.AuditLoggerFromConfig(ctx, cfg.Auditlog, evts, logger)
-			return nil
+			gr.Add(func() error {
+				svc.AuditLoggerFromConfig(ctx, cfg.Auditlog, evts, logger)
+				return nil
+			}, func(err error) {
+				logger.Error().
+					Err(err).
+					Msg("Shutting down server")
+				cancel()
+			})
+
+			{
+				server := debug.NewService(
+					debug.Logger(logger),
+					debug.Name(cfg.Service.Name),
+					debug.Version(version.GetString()),
+					debug.Address(cfg.Debug.Addr),
+					debug.Token(cfg.Debug.Token),
+					debug.Pprof(cfg.Debug.Pprof),
+					debug.Zpages(cfg.Debug.Zpages),
+					debug.Health(handlers.Health),
+					debug.Ready(handlers.Ready),
+				)
+
+				gr.Add(server.ListenAndServe, func(_ error) {
+					_ = server.Shutdown(ctx)
+					cancel()
+				})
+			}
+			return gr.Run()
 		},
 	}
 }

services/audit/pkg/config/config.go

@@ -12,8 +12,9 @@ type Config struct {
 
 	Service Service `yaml:"-"`
 
-	Log   *Log  `yaml:"log"`
-	Debug Debug `yaml:"debug"`
+	Tracing *Tracing `yaml:"tracing"`
+	Log     *Log     `yaml:"log"`
+	Debug   Debug    `yaml:"debug"`
 
 	Events   Events   `yaml:"events"`
 	Auditlog Auditlog `yaml:"auditlog"`
@@ -38,3 +39,11 @@ type Auditlog struct {
 	FilePath     string `yaml:"filepath" env:"AUDIT_FILEPATH" desc:"Filepath to the logfile. Mandatory if LogToFile is true."`
 	Format       string `yaml:"format" env:"AUDIT_FORMAT" desc:"Log format. Using json is advised."`
 }
+
+// Tracing defines the available tracing configuration.
+type Tracing struct {
+	Enabled   bool   `yaml:"enabled" env:"OCIS_TRACING_ENABLED;AUDIT_TRACING_ENABLED" desc:"Activates tracing."`
+	Type      string `yaml:"type" env:"OCIS_TRACING_TYPE;AUDIT_TRACING_TYPE" desc:"The type of tracing. Defaults to \"\", which is the same as \"jaeger\". Allowed tracing types are \"jaeger\" and \"\" as of now."`
+	Endpoint  string `yaml:"endpoint" env:"OCIS_TRACING_ENDPOINT;AUDIT_TRACING_ENDPOINT" desc:"The endpoint of the tracing agent."`
+	Collector string `yaml:"collector" env:"OCIS_TRACING_COLLECTOR;AUDIT_TRACING_COLLECTOR" desc:"The HTTP endpoint for sending spans directly to a collector, i.e. http://jaeger-collector:14268/api/traces. Only used if the tracing endpoint is unset."`
+}

services/audit/pkg/config/defaults/defaultconfig.go

@@ -16,7 +16,9 @@ func FullDefaultConfig() *config.Config {
 func DefaultConfig() *config.Config {
 	return &config.Config{
 		Debug: config.Debug{
-			Addr: "127.0.0.1:9234",
+			Addr:   "127.0.0.1:9234",
+			Zpages: false,
+			Pprof:  false,
 		},
 		Service: config.Service{
 			Name: "audit",
@@ -47,6 +49,18 @@ func EnsureDefaults(cfg *config.Config) {
 	} else if cfg.Log == nil {
 		cfg.Log = &config.Log{}
 	}
+
+	// provide with defaults for shared tracing, since we need a valid destination address for "envdecode".
+	if cfg.Tracing == nil && cfg.Commons != nil && cfg.Commons.Tracing != nil {
+		cfg.Tracing = &config.Tracing{
+			Enabled:   cfg.Commons.Tracing.Enabled,
+			Type:      cfg.Commons.Tracing.Type,
+			Endpoint:  cfg.Commons.Tracing.Endpoint,
+			Collector: cfg.Commons.Tracing.Collector,
+		}
+	} else if cfg.Tracing == nil {
+		cfg.Tracing = &config.Tracing{}
+	}
 }
 
 // Sanitize sanitized the configuration