Downgraded expected/common "BootstrapPackage not found" server error to a debug message. (#25266)

For #25265
Downgraded expected/common "BootstrapPackage not found" server error to
a debug message. Occurs when UI/API checks if bootstrap package exists.

# Checklist for submitter
- [x] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
- [x] Manual QA for all new/changed functionality

changes/25265-boostrap-package-not-found

@@ -0,0 +1 @@
+Downgraded expected/common "BootstrapPackage not found" server error to a debug message. Occurs when UI/API checks if bootstrap package exists.

ee/server/service/software_installers.go

@@ -836,7 +836,8 @@ func (svc *Service) getSoftwareInstallerBinary(ctx context.Context, storageID st
 		return nil, ctxerr.Wrap(ctx, err, "checking if installer exists")
 	}
 	if !exists {
-		return nil, ctxerr.Wrap(ctx, notFoundError{}, "does not exist in software installer store")
+		return nil, ctxerr.Wrapf(ctx, notFoundError{}, "%s with filename %s does not exist in software installer store", storageID,
+			filename)
 	}
 
 	// get the installer from the store

server/contexts/logging/logging.go

@@ -53,6 +53,14 @@ func WithNoUser(ctx context.Context) context.Context {
 	return ctx
 }
 
+// WithNoError returns a context with logging.SkipError set to true so error won't be logged at level=error
+func WithNoError(ctx context.Context) context.Context {
+	if logCtx, ok := FromContext(ctx); ok {
+		logCtx.SetSkipError()
+	}
+	return ctx
+}
+
 // WithExtras returns a context with logging.Extras set as the values provided
 func WithExtras(ctx context.Context, extras ...interface{}) context.Context {
 	if logCtx, ok := FromContext(ctx); ok {
@@ -61,6 +69,8 @@ func WithExtras(ctx context.Context, extras ...interface{}) context.Context {
 	return ctx
 }
 
+// WithLevel forces a log level for the current request/context.
+// Level may still be upgraded to Error if an error is present.
 func WithLevel(ctx context.Context, level func(kitlog.Logger) kitlog.Logger) context.Context {
 	if logCtx, ok := FromContext(ctx); ok {
 		logCtx.SetForceLevel(level)
@@ -77,6 +87,7 @@ type LoggingContext struct {
 	Extras     []interface{}
 	SkipUser   bool
 	ForceLevel func(kitlog.Logger) kitlog.Logger
+	SkipError  bool
 }
 
 func (l *LoggingContext) SetForceLevel(level func(kitlog.Logger) kitlog.Logger) {
@@ -97,6 +108,12 @@ func (l *LoggingContext) SetSkipUser() {
 	l.SkipUser = true
 }
 
+func (l *LoggingContext) SetSkipError() {
+	l.l.Lock()
+	defer l.l.Unlock()
+	l.SkipError = true
+}
+
 func (l *LoggingContext) SetStartTime() {
 	l.l.Lock()
 	defer l.l.Unlock()
@@ -115,7 +132,7 @@ func (l *LoggingContext) Log(ctx context.Context, logger kitlog.Logger) {
 	defer l.l.Unlock()
 
 	switch {
-	case len(l.Errs) > 0:
+	case len(l.Errs) > 0 && !l.SkipError:
 		logger = level.Error(logger)
 	case l.ForceLevel != nil:
 		logger = l.ForceLevel(logger)

server/service/apple_mdm.go

@@ -2376,7 +2376,13 @@ func (r bootstrapPackageMetadataResponse) error() error { return r.Err }
 func bootstrapPackageMetadataEndpoint(ctx context.Context, request interface{}, svc fleet.Service) (errorer, error) {
 	req := request.(*bootstrapPackageMetadataRequest)
 	meta, err := svc.GetMDMAppleBootstrapPackageMetadata(ctx, req.TeamID, req.ForUpdate)
-	if err != nil {
+	switch {
+	case fleet.IsNotFound(err):
+		// Don't log this response as error -- it's expected to happen when the bootstrap package is missing, which is a common case.
+		logging.WithNoError(ctx)
+		return bootstrapPackageMetadataResponse{Err: fleet.NewInvalidArgumentError("team_id",
+			"bootstrap package for this team does not exist").WithStatus(http.StatusNotFound)}, nil
+	case err != nil:
 		return bootstrapPackageMetadataResponse{Err: err}, nil
 	}
 	return bootstrapPackageMetadataResponse{MDMAppleBootstrapPackage: meta}, nil

server/service/integration_logger_test.go

@@ -148,7 +148,7 @@ func (s *integrationLoggerTestSuite) TestLoggerLogin() {
 		require.NotContains(t, logData, "user") // logger context is set to skip user
 
 		for _, e := range tt.expectedLogs {
-			assert.Equal(t, logData[e.key], e.val)
+			assert.Equal(t, e.val, logData[e.key], fmt.Sprintf("%+v", tt.expectedLogs))
 		}
 		s.buf.Reset()
 	}