| package bundlefile |
| |
| import ( |
| "encoding/json" |
| "fmt" |
| "io" |
| ) |
| |
| // Bundlefile stores the contents of a bundlefile |
| type Bundlefile struct { |
| Version string |
| Services map[string]Service |
| } |
| |
| // Service is a service from a bundlefile |
| type Service struct { |
| Image string |
| Command []string `json:",omitempty"` |
| Args []string `json:",omitempty"` |
| Env []string `json:",omitempty"` |
| Labels map[string]string `json:",omitempty"` |
| Ports []Port `json:",omitempty"` |
| WorkingDir *string `json:",omitempty"` |
| User *string `json:",omitempty"` |
| Networks []string `json:",omitempty"` |
| } |
| |
| // Port is a port as defined in a bundlefile |
| type Port struct { |
| Protocol string |
| Port uint32 |
| } |
| |
| // LoadFile loads a bundlefile from a path to the file |
| func LoadFile(reader io.Reader) (*Bundlefile, error) { |
| bundlefile := &Bundlefile{} |
| |
| decoder := json.NewDecoder(reader) |
| if err := decoder.Decode(bundlefile); err != nil { |
| switch jsonErr := err.(type) { |
| case *json.SyntaxError: |
| return nil, fmt.Errorf( |
| "JSON syntax error at byte %v: %s", |
| jsonErr.Offset, |
| jsonErr.Error()) |
| case *json.UnmarshalTypeError: |
| return nil, fmt.Errorf( |
| "Unexpected type at byte %v. Expected %s but received %s.", |
| jsonErr.Offset, |
| jsonErr.Type, |
| jsonErr.Value) |
| } |
| return nil, err |
| } |
| |
| return bundlefile, nil |
| } |
| |
| // Print writes the contents of the bundlefile to the output writer |
| // as human readable json |
| func Print(out io.Writer, bundle *Bundlefile) error { |
| bytes, err := json.MarshalIndent(*bundle, "", " ") |
| if err != nil { |
| return err |
| } |
| |
| _, err = out.Write(bytes) |
| return err |
| } |