config/plan_task.go

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package config

import (
    "encoding/json"
    "fmt"
)

type PlanTask struct {
    TaskMeta
    Name string `json:"name,omitempty"`
}

func (t *PlanTask) GetType() string {
    return "plan"
}

func (t *PlanTask) Extend(task Task) error {
    parent, ok := task.(*PlanTask)
    if !ok {
        return fmt.Errorf(
            "task %s extends %s, but they have different types",
            t.Name,
            task.GetName(),
        )
    }

    t.extendMeta(parent.TaskMeta)
    t.Name = extendString(t.Name, parent.Name)
    return nil
}

func (t *PlanTask) MarshalJSON() ([]byte, error) {
    type Alias PlanTask

    return json.Marshal(&struct {
        *Alias
        Type string `json:"type"`
    }{
        Alias: (*Alias)(t),
        Type:  t.GetType(),
    })
}