forked from juju/juju
/
manifold.go
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/
manifold.go
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// Copyright 2015 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package metricworker
import (
"github.com/juju/errors"
"github.com/juju/juju/api/base"
"github.com/juju/juju/api/metricsmanager"
"github.com/juju/juju/cmd/jujud/agent/engine"
"github.com/juju/juju/worker"
"github.com/juju/juju/worker/dependency"
)
// ManifoldConfig describes the resources used by metrics workers.
type ManifoldConfig engine.APIManifoldConfig
// Manifold returns a Manifold that encapsulates various metrics workers.
func Manifold(config ManifoldConfig) dependency.Manifold {
return engine.APIManifold(
engine.APIManifoldConfig(config),
manifoldStart,
)
}
// manifoldStart creates a runner for the metrics workers, given a base.APICaller.
func manifoldStart(apiCaller base.APICaller) (worker.Worker, error) {
client, err := metricsmanager.NewClient(apiCaller)
if err != nil {
return nil, errors.Trace(err)
}
w, err := newMetricsManager(client, nil)
if err != nil {
return nil, errors.Trace(err)
}
return w, nil
}