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support merge yaml flags

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Signed-off-by: Avi Deitcher <avi@deitcher.net>
This commit is contained in:
Avi Deitcher
2020-04-26 11:13:15 +03:00
parent 58434279cb
commit bcd36a4661
7 changed files with 139 additions and 4 deletions
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34
src/cmd/linuxkit/moby/config.go
View File

@@ -71,9 +71,11 @@ type Image struct {
// Everything except Runtime and ref is used to build the OCI spec
type ImageConfig struct {
Capabilities *[]string `yaml:"capabilities,omitempty" json:"capabilities,omitempty"`
CapabilitiesAdd *[]string `yaml:"capabilities.add,omitempty" json:"capabilities.add,omitempty"`
Ambient *[]string `yaml:"ambient,omitempty" json:"ambient,omitempty"`
Mounts *[]specs.Mount `yaml:"mounts,omitempty" json:"mounts,omitempty"`
Binds *[]string `yaml:"binds,omitempty" json:"binds,omitempty"`
BindsAdd *[]string `yaml:"binds.add,omitempty" json:"binds.add,omitempty"`
Tmpfs *[]string `yaml:"tmpfs,omitempty" json:"tmpfs,omitempty"`
Command *[]string `yaml:"command,omitempty" json:"command,omitempty"`
Env *[]string `yaml:"env,omitempty" json:"env,omitempty"`
@@ -505,6 +507,34 @@ func assignStrings3(v1 []string, v2, v3 *[]string) []string {
return v1
}
// mergeStrings does ordered unique merge between JSON string array pointers
func mergeStrings(v1, v2 *[]string) *[]string {
switch {
case v2 == nil && v1 == nil:
return &[]string{}
case v2 == nil:
return v1
case v1 == nil:
return v2
}
// merge the two uniquely
ret := []string{}
m := make(map[string]bool)
for _, s := range *v1 {
if m[s] {
continue
}
ret = append(ret, s)
}
for _, s := range *v2 {
if m[s] {
continue
}
ret = append(ret, s)
}
return &ret
}
// assignMaps does ordered overrides from JSON string map pointers
func assignMaps(v1, v2 *map[string]string) map[string]string {
if v2 != nil {
@@ -770,7 +800,7 @@ func ConfigInspectToOCI(yaml *Image, inspect types.ImageInspect, idMap map[strin
}
mounts[dest] = specs.Mount{Destination: dest, Type: "tmpfs", Source: "tmpfs", Options: opts}
}
for _, b := range assignStrings(label.Binds, yaml.Binds) {
for _, b := range assignStrings(mergeStrings(label.Binds, yaml.BindsAdd), yaml.Binds) {
parts := strings.Split(b, ":")
if len(parts) < 2 {
return oci, runtime, fmt.Errorf("Cannot parse bind, missing ':': %s", b)
@@ -880,7 +910,7 @@ func ConfigInspectToOCI(yaml *Image, inspect types.ImageInspect, idMap map[strin
capCheck[capability] = true
}
boundingSet := map[string]bool{}
caps := assignStrings(label.Capabilities, yaml.Capabilities)
caps := assignStrings(mergeStrings(label.Capabilities, yaml.CapabilitiesAdd), yaml.Capabilities)
if len(caps) == 1 {
switch cap := strings.ToLower(caps[0]); cap {
case "none":

2
src/cmd/linuxkit/moby/schema.go
View File

@@ -260,9 +260,11 @@ var schema = string(`
"name": {"type": "string"},
"image": {"type": "string"},
"capabilities": { "$ref": "#/definitions/strings" },
"capabilities.add": { "$ref": "#/definitions/strings" },
"ambient": { "$ref": "#/definitions/strings" },
"mounts": { "$ref": "#/definitions/mounts" },
"binds": { "$ref": "#/definitions/strings" },
"binds.add": { "$ref": "#/definitions/strings" },
"tmpfs": { "$ref": "#/definitions/strings" },
"command": { "$ref": "#/definitions/strings" },
"env": { "$ref": "#/definitions/strings" },