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Viewing changes to src/github.com/juju/juju/cmd/jujud/agent/engine/apiagent.go

  • Committer: Nicholas Skaggs
  • Date: 2016-10-24 20:56:05 UTC
  • Revision ID: nicholas.skaggs@canonical.com-20161024205605-z8lta0uvuhtxwzwl
Initi with beta15

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src/github.com/juju/juju/cmd/jujud/agent/engine/apiagent.go
 
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// Copyright 2016 Canonical Ltd.
 
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// Licensed under the AGPLv3, see LICENCE file for details.
 
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package engine
 
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import (
 
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        "github.com/juju/juju/agent"
 
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        "github.com/juju/juju/api/base"
 
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        "github.com/juju/juju/worker"
 
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        "github.com/juju/juju/worker/dependency"
 
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)
 
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// Many manifolds completely depend on an agent and an API connection; this
 
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// type configures them.
 
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type AgentApiManifoldConfig struct {
 
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        AgentName     string
 
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        APICallerName string
 
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}
 
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// AgentApiStartFunc encapsulates the behaviour that varies among AgentApiManifolds.
 
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type AgentApiStartFunc func(agent.Agent, base.APICaller) (worker.Worker, error)
 
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// AgentApiManifold returns a dependency.Manifold that calls the supplied start
 
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// func with the API and agent resources defined in the config (once those
 
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// resources are present).
 
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func AgentApiManifold(config AgentApiManifoldConfig, start AgentApiStartFunc) dependency.Manifold {
 
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        return dependency.Manifold{
 
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                Inputs: []string{
 
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                        config.AgentName,
 
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                        config.APICallerName,
 
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                },
 
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                Start: func(context dependency.Context) (worker.Worker, error) {
 
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                        var agent agent.Agent
 
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                        if err := context.Get(config.AgentName, &agent); err != nil {
 
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                                return nil, err
 
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                        }
 
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                        var apiCaller base.APICaller
 
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                        if err := context.Get(config.APICallerName, &apiCaller); err != nil {
 
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                                return nil, err
 
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                        }
 
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                        return start(agent, apiCaller)
 
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                },
 
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        }
 
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}