09ac84926e
Also fix a bug where the RawFs assembler was not correctly unmarshaled. Signed-off-by: Tom Gundersen <teg@jklm.no>
53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
package pipeline
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import (
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"encoding/json"
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"errors"
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)
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// An Assembler turns a filesystem tree into a target image.
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type Assembler struct {
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Name string `json:"name"`
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Options AssemblerOptions `json:"options"`
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}
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// AssemblerOptions specify the operations of a given assembler-type.
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type AssemblerOptions interface {
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isAssemblerOptions()
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}
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type rawAssembler struct {
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Name string `json:"name"`
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Options json.RawMessage `json:"options"`
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}
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// UnmarshalJSON unmarshals JSON into an Assembler object. Each type of
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// assembler has a custom unmarshaller for its options, selected based on the
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// stage name.
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func (assembler *Assembler) UnmarshalJSON(data []byte) error {
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var rawAssembler rawAssembler
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err := json.Unmarshal(data, &rawAssembler)
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if err != nil {
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return err
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}
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var options AssemblerOptions
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switch rawAssembler.Name {
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case "org.osbuild.tar":
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options = new(TarAssemblerOptions)
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case "org.osbuild.qemu":
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options = new(QEMUAssemblerOptions)
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case "org.osbuild.rawfs":
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options = new(RawFSAssemblerOptions)
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default:
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return errors.New("unexpected assembler name")
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}
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err = json.Unmarshal(rawAssembler.Options, options)
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if err != nil {
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return err
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}
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assembler.Name = rawAssembler.Name
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assembler.Options = options
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return nil
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}
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