Use compose-spec parser

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

vendor/github.com/compose-spec/compose-go/loader/validate.go

@@ -0,0 +1,77 @@
+/*
+   Copyright 2020 The Compose Specification Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package loader
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/compose-spec/compose-go/errdefs"
+	"github.com/compose-spec/compose-go/types"
+	"github.com/pkg/errors"
+)
+
+// checkConsistency validate a compose model is consistent
+func checkConsistency(project *types.Project) error {
+	for _, s := range project.Services {
+		if s.Build == nil && s.Image == "" {
+			return errors.Wrapf(errdefs.ErrInvalid, "service %q has neither an image nor a build context specified", s.Name)
+		}
+
+		for network := range s.Networks {
+			if _, ok := project.Networks[network]; !ok {
+				return errors.Wrap(errdefs.ErrInvalid, fmt.Sprintf("service %q refers to undefined network %s", s.Name, network))
+			}
+		}
+
+		if strings.HasPrefix(s.NetworkMode, types.NetworkModeServicePrefix) {
+			serviceName := s.NetworkMode[len(types.NetworkModeServicePrefix):]
+			if _, err := project.GetServices(serviceName); err != nil {
+				return fmt.Errorf("service %q not found for network_mode 'service:%s'", serviceName, serviceName)
+			}
+		}
+
+		if strings.HasPrefix(s.NetworkMode, types.NetworkModeContainerPrefix) {
+			containerName := s.NetworkMode[len(types.NetworkModeContainerPrefix):]
+			if _, err := project.GetByContainerName(containerName); err != nil {
+				return fmt.Errorf("service with container_name %q not found for network_mode 'container:%s'", containerName, containerName)
+			}
+		}
+
+		for _, volume := range s.Volumes {
+			switch volume.Type {
+			case types.VolumeTypeVolume:
+				if volume.Source != "" { // non anonymous volumes
+					if _, ok := project.Volumes[volume.Source]; !ok {
+						return errors.Wrap(errdefs.ErrInvalid, fmt.Sprintf("service %q refers to undefined volume %s", s.Name, volume.Source))
+					}
+				}
+			}
+		}
+		for _, secret := range s.Secrets {
+			if _, ok := project.Secrets[secret.Source]; !ok {
+				return errors.Wrap(errdefs.ErrInvalid, fmt.Sprintf("service %q refers to undefined secret %s", s.Name, secret.Source))
+			}
+		}
+		for _, config := range s.Configs {
+			if _, ok := project.Configs[config.Source]; !ok {
+				return errors.Wrap(errdefs.ErrInvalid, fmt.Sprintf("service %q refers to undefined config %s", s.Name, config.Source))
+			}
+		}
+	}
+	return nil
+}