validate merge result vs individual overrides

loader/extends.go

@@ -31,9 +31,15 @@ func ApplyExtends(ctx context.Context, dict map[string]any, workingdir string, o
 	if !ok {
 		return nil
 	}
-	services := a.(map[string]any)
+	services, ok := a.(map[string]any)
+	if !ok {
+		return fmt.Errorf("services must be a mapping")
+	}
 	for name, s := range services {
-		service := s.(map[string]any)
+		service, ok := s.(map[string]any)
+		if !ok {
+			return fmt.Errorf("services.%s must be a mapping", name)
+		}
 		x, ok := service["extends"]
 		if !ok {
 			continue

loader/loader.go

@@ -312,12 +312,6 @@ func loadYamlModel(ctx context.Context, config types.ConfigDetails, opts *Option
 
 			fixEmptyNotNull(cfg)
 
-			if !opts.SkipValidation {
-				if err := schema.Validate(cfg); err != nil {
-					return fmt.Errorf("validating %s: %w", file.Filename, err)
-				}
-			}
-
 			if !opts.SkipExtends {
 				err = ApplyExtends(fctx, cfg, config.WorkingDir, opts, ct, processors...)
 				if err != nil {
@@ -333,6 +327,12 @@ func loadYamlModel(ctx context.Context, config types.ConfigDetails, opts *Option
 
 			dict, err = override.Merge(dict, cfg)
 
+			if !opts.SkipValidation {
+				if err := schema.Validate(dict); err != nil {
+					return fmt.Errorf("validating %s: %w", file.Filename, err)
+				}
+			}
+
 			return err
 		}
 
@@ -378,8 +378,6 @@ func loadYamlModel(ctx context.Context, config types.ConfigDetails, opts *Option
 		}
 	}
 
-	dict = groupXFieldsIntoExtensions(dict, tree.NewPath())
-
 	if !opts.SkipValidation {
 		if err := validation.Validate(dict); err != nil {
 			return nil, err
@@ -423,6 +421,8 @@ func load(ctx context.Context, configDetails types.ConfigDetails, opts *Options,
 		Environment: configDetails.Environment,
 	}
 	delete(dict, "name") // project name set by yaml must be identified by caller as opts.projectName
+
+	dict = groupXFieldsIntoExtensions(dict, tree.NewPath())
 	err = Transform(dict, project)
 	if err != nil {
 		return nil, err

loader/override_test.go

@@ -128,3 +128,40 @@ services:
 	assert.NilError(t, err)
 	assert.Check(t, p.Services["test"].DependsOn["foo"].Required == false)
 }
+
+func TestOverridePartial(t *testing.T) {
+	yaml := `
+name: test-override-networks
+services:
+  test:
+    image: test
+    depends_on:
+      foo:
+        condition: service_healthy
+
+  foo: 
+    image: foo
+`
+
+	override := `
+services:
+  test:
+    depends_on:
+      foo:
+        # This is invalid according to json schema as condition is required
+        required: false
+`
+	_, err := LoadWithContext(context.Background(), types.ConfigDetails{
+		ConfigFiles: []types.ConfigFile{
+			{
+				Filename: "base",
+				Content:  []byte(yaml),
+			},
+			{
+				Filename: "override",
+				Content:  []byte(override),
+			},
+		},
+	})
+	assert.NilError(t, err)
+}

types/healthcheck.go

@@ -30,7 +30,7 @@ type HealthCheckConfig struct {
 	StartInterval *Duration       `yaml:"start_interval,omitempty" json:"start_interval,omitempty"`
 	Disable       bool            `yaml:"disable,omitempty" json:"disable,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // HealthCheckTest is the command run to test the health of a service

types/project.go

@@ -45,7 +45,7 @@ type Project struct {
 	Volumes    Volumes    `yaml:"volumes,omitempty" json:"volumes,omitempty"`
 	Secrets    Secrets    `yaml:"secrets,omitempty" json:"secrets,omitempty"`
 	Configs    Configs    `yaml:"configs,omitempty" json:"configs,omitempty"`
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"` // https://github.com/golang/go/issues/6213
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"` // https://github.com/golang/go/issues/6213
 
 	// IncludeReferences is keyed by Compose YAML filename and contains config for
 	// other Compose YAML files it directly triggered a load of via `include`.

types/types.go

@@ -132,7 +132,7 @@ type ServiceConfig struct {
 	VolumesFrom     []string                         `yaml:"volumes_from,omitempty" json:"volumes_from,omitempty"`
 	WorkingDir      string                           `yaml:"working_dir,omitempty" json:"working_dir,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // MarshalYAML makes ServiceConfig implement yaml.Marshaller
@@ -280,7 +280,7 @@ type BuildConfig struct {
 	Platforms          StringList                `yaml:"platforms,omitempty" json:"platforms,omitempty"`
 	Privileged         bool                      `yaml:"privileged,omitempty" json:"privileged,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // BlkioConfig define blkio config
@@ -292,23 +292,23 @@ type BlkioConfig struct {
 	DeviceWriteBps  []ThrottleDevice `yaml:"device_write_bps,omitempty" json:"device_write_bps,omitempty"`
 	DeviceWriteIOps []ThrottleDevice `yaml:"device_write_iops,omitempty" json:"device_write_iops,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // WeightDevice is a structure that holds device:weight pair
 type WeightDevice struct {
 	Path   string
 	Weight uint16
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // ThrottleDevice is a structure that holds device:rate_per_second pair
 type ThrottleDevice struct {
 	Path string
 	Rate UnitBytes
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // MappingWithColon is a mapping type that can be converted from a list of
@@ -320,7 +320,7 @@ type LoggingConfig struct {
 	Driver  string  `yaml:"driver,omitempty" json:"driver,omitempty"`
 	Options Options `yaml:"options,omitempty" json:"options,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // DeployConfig the deployment configuration for a service
@@ -335,7 +335,7 @@ type DeployConfig struct {
 	Placement      Placement      `yaml:"placement,omitempty" json:"placement,omitempty"`
 	EndpointMode   string         `yaml:"endpoint_mode,omitempty" json:"endpoint_mode,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // UpdateConfig the service update configuration
@@ -347,15 +347,15 @@ type UpdateConfig struct {
 	MaxFailureRatio float32  `yaml:"max_failure_ratio,omitempty" json:"max_failure_ratio,omitempty"`
 	Order           string   `yaml:"order,omitempty" json:"order,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // Resources the resource limits and reservations
 type Resources struct {
 	Limits       *Resource `yaml:"limits,omitempty" json:"limits,omitempty"`
 	Reservations *Resource `yaml:"reservations,omitempty" json:"reservations,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // Resource is a resource to be limited or reserved
@@ -367,15 +367,15 @@ type Resource struct {
 	Devices          []DeviceRequest   `yaml:"devices,omitempty" json:"devices,omitempty"`
 	GenericResources []GenericResource `yaml:"generic_resources,omitempty" json:"generic_resources,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // GenericResource represents a "user defined" resource which can
 // only be an integer (e.g: SSD=3) for a service
 type GenericResource struct {
 	DiscreteResourceSpec *DiscreteGenericResource `yaml:"discrete_resource_spec,omitempty" json:"discrete_resource_spec,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // DiscreteGenericResource represents a "user defined" resource which is defined
@@ -386,7 +386,7 @@ type DiscreteGenericResource struct {
 	Kind  string `json:"kind"`
 	Value int64  `json:"value"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // RestartPolicy the service restart policy
@@ -396,7 +396,7 @@ type RestartPolicy struct {
 	MaxAttempts *uint64   `yaml:"max_attempts,omitempty" json:"max_attempts,omitempty"`
 	Window      *Duration `yaml:"window,omitempty" json:"window,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // Placement constraints for the service
@@ -405,14 +405,14 @@ type Placement struct {
 	Preferences []PlacementPreferences `yaml:"preferences,omitempty" json:"preferences,omitempty"`
 	MaxReplicas uint64                 `yaml:"max_replicas_per_node,omitempty" json:"max_replicas_per_node,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // PlacementPreferences is the preferences for a service placement
 type PlacementPreferences struct {
 	Spread string `yaml:"spread,omitempty" json:"spread,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // ServiceNetworkConfig is the network configuration for a service
@@ -424,7 +424,7 @@ type ServiceNetworkConfig struct {
 	LinkLocalIPs []string `yaml:"link_local_ips,omitempty" json:"link_local_ips,omitempty"`
 	MacAddress   string   `yaml:"mac_address,omitempty" json:"mac_address,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // ServicePortConfig is the port configuration for a service
@@ -435,7 +435,7 @@ type ServicePortConfig struct {
 	Published string `yaml:"published,omitempty" json:"published,omitempty"`
 	Protocol  string `yaml:"protocol,omitempty" json:"protocol,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // ParsePortConfig parse short syntax for service port configuration
@@ -488,7 +488,7 @@ type ServiceVolumeConfig struct {
 	Volume      *ServiceVolumeVolume `yaml:"volume,omitempty" json:"volume,omitempty"`
 	Tmpfs       *ServiceVolumeTmpfs  `yaml:"tmpfs,omitempty" json:"tmpfs,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // String render ServiceVolumeConfig as a volume string, one can parse back using loader.ParseVolume
@@ -534,7 +534,7 @@ type ServiceVolumeBind struct {
 	Propagation    string `yaml:"propagation,omitempty" json:"propagation,omitempty"`
 	CreateHostPath bool   `yaml:"create_host_path,omitempty" json:"create_host_path,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // SELinux represents the SELinux re-labeling options.
@@ -565,7 +565,7 @@ const (
 type ServiceVolumeVolume struct {
 	NoCopy bool `yaml:"nocopy,omitempty" json:"nocopy,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // ServiceVolumeTmpfs are options for a service volume of type tmpfs
@@ -574,7 +574,7 @@ type ServiceVolumeTmpfs struct {
 
 	Mode uint32 `yaml:"mode,omitempty" json:"mode,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // FileReferenceConfig for a reference to a swarm file object
@@ -585,7 +585,7 @@ type FileReferenceConfig struct {
 	GID    string  `yaml:"gid,omitempty" json:"gid,omitempty"`
 	Mode   *uint32 `yaml:"mode,omitempty" json:"mode,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // ServiceConfigObjConfig is the config obj configuration for a service
@@ -600,7 +600,7 @@ type UlimitsConfig struct {
 	Soft   int `yaml:"soft,omitempty" json:"soft,omitempty"`
 	Hard   int `yaml:"hard,omitempty" json:"hard,omitempty"`
 
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // MarshalYAML makes UlimitsConfig implement yaml.Marshaller
@@ -637,14 +637,14 @@ type NetworkConfig struct {
 	Attachable bool       `yaml:"attachable,omitempty" json:"attachable,omitempty"`
 	Labels     Labels     `yaml:"labels,omitempty" json:"labels,omitempty"`
 	EnableIPv6 bool       `yaml:"enable_ipv6,omitempty" json:"enable_ipv6,omitempty"`
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // IPAMConfig for a network
 type IPAMConfig struct {
 	Driver     string      `yaml:"driver,omitempty" json:"driver,omitempty"`
 	Config     []*IPAMPool `yaml:"config,omitempty" json:"config,omitempty"`
-	Extensions Extensions  `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions  `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // IPAMPool for a network
@@ -663,7 +663,7 @@ type VolumeConfig struct {
 	DriverOpts Options    `yaml:"driver_opts,omitempty" json:"driver_opts,omitempty"`
 	External   External   `yaml:"external,omitempty" json:"external,omitempty"`
 	Labels     Labels     `yaml:"labels,omitempty" json:"labels,omitempty"`
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // External identifies a Volume or Network as a reference to a resource that is
@@ -675,7 +675,7 @@ type CredentialSpecConfig struct {
 	Config     string     `yaml:"config,omitempty" json:"config,omitempty"` // Config was added in API v1.40
 	File       string     `yaml:"file,omitempty" json:"file,omitempty"`
 	Registry   string     `yaml:"registry,omitempty" json:"registry,omitempty"`
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 // FileObjectConfig is a config type for a file used by a service
@@ -689,7 +689,7 @@ type FileObjectConfig struct {
 	Driver         string            `yaml:"driver,omitempty" json:"driver,omitempty"`
 	DriverOpts     map[string]string `yaml:"driver_opts,omitempty" json:"driver_opts,omitempty"`
 	TemplateDriver string            `yaml:"template_driver,omitempty" json:"template_driver,omitempty"`
-	Extensions     Extensions        `yaml:"#extensions,inline" json:"-"`
+	Extensions     Extensions        `yaml:"#extensions,inline,omitempty" json:"-"`
 }
 
 const (
@@ -708,7 +708,7 @@ type DependsOnConfig map[string]ServiceDependency
 type ServiceDependency struct {
 	Condition  string     `yaml:"condition,omitempty" json:"condition,omitempty"`
 	Restart    bool       `yaml:"restart,omitempty" json:"restart,omitempty"`
-	Extensions Extensions `yaml:"#extensions,inline" json:"-"`
+	Extensions Extensions `yaml:"#extensions,inline,omitempty" json:"-"`
 	Required   bool       `yaml:"required" json:"required"`
 }
 

validation/external.go

@@ -18,6 +18,7 @@ package validation
 
 import (
 	"fmt"
+	"strings"
 
 	"github.com/compose-spec/compose-go/v2/consts"
 	"github.com/compose-spec/compose-go/v2/tree"
@@ -37,6 +38,10 @@ func checkExternal(v map[string]any, p tree.Path) error {
 		case "name", "external", consts.Extensions:
 			continue
 		default:
+			if strings.HasPrefix(k, "x-") {
+				// custom extension, ignored
+				continue
+			}
 			return fmt.Errorf("%s: conflicting parameters \"external\" and %q specified", p, k)
 		}
 	}