github.com/wallyworld/juju@v0.0.0-20161013125918-6cf1bc9d917a/worker/authenticationworker/manifold.go (about)

     1  // Copyright 2015 Canonical Ltd.
     2  // Licensed under the AGPLv3, see LICENCE file for details.
     3  
     4  package authenticationworker
     5  
     6  import (
     7  	"github.com/juju/errors"
     8  
     9  	"github.com/juju/juju/agent"
    10  	"github.com/juju/juju/api/base"
    11  	"github.com/juju/juju/api/keyupdater"
    12  	"github.com/juju/juju/cmd/jujud/agent/engine"
    13  	"github.com/juju/juju/worker"
    14  	"github.com/juju/juju/worker/dependency"
    15  )
    16  
    17  // ManifoldConfig defines the names of the manifolds on which a Manifold will depend.
    18  type ManifoldConfig engine.AgentAPIManifoldConfig
    19  
    20  // Manifold returns a dependency manifold that runs a authenticationworker worker,
    21  // using the resource names defined in the supplied config.
    22  func Manifold(config ManifoldConfig) dependency.Manifold {
    23  	typedConfig := engine.AgentAPIManifoldConfig(config)
    24  
    25  	return engine.AgentAPIManifold(typedConfig, newWorker)
    26  }
    27  
    28  func newWorker(a agent.Agent, apiCaller base.APICaller) (worker.Worker, error) {
    29  	w, err := NewWorker(keyupdater.NewState(apiCaller), a.CurrentConfig())
    30  	if err != nil {
    31  		return nil, errors.Annotate(err, "cannot start ssh auth-keys updater worker")
    32  	}
    33  	return w, nil
    34  }