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