/
life.go
47 lines (42 loc) · 1.31 KB
/
life.go
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// Copyright 2012, 2013 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package common
import (
"github.com/juju/errors"
"github.com/juju/names/v5"
"github.com/juju/juju/api/base"
"github.com/juju/juju/core/life"
"github.com/juju/juju/rpc/params"
)
// Life requests the life cycle of the given entities from the given
// server-side API facade via the given caller.
func Life(caller base.FacadeCaller, tags []names.Tag) ([]params.LifeResult, error) {
if len(tags) == 0 {
return []params.LifeResult{}, nil
}
var result params.LifeResults
entities := make([]params.Entity, len(tags))
for i, t := range tags {
entities[i] = params.Entity{t.String()}
}
args := params.Entities{Entities: entities}
if err := caller.FacadeCall("Life", args, &result); err != nil {
return []params.LifeResult{}, err
}
return result.Results, nil
}
// OneLife requests the life cycle of the given entity from the given
// server-side API facade via the given caller.
func OneLife(caller base.FacadeCaller, tag names.Tag) (life.Value, error) {
result, err := Life(caller, []names.Tag{tag})
if err != nil {
return "", err
}
if len(result) != 1 {
return "", errors.Errorf("expected 1 result, got %d", len(result))
}
if err := result[0].Error; err != nil {
return "", err
}
return result[0].Life, nil
}