packer-cn/builder/oracle/bmcs/builder.go

// Copyright (c) 2017 Oracle America, Inc.
// The contents of this file are subject to the Mozilla Public License Version
// 2.0 (the "License"); you may not use this file except in compliance with the
// License. If a copy of the MPL was not distributed with this file, You can
// obtain one at http://mozilla.org/MPL/2.0/

// Package bmcs contains a packer.Builder implementation that builds Oracle
// Bare Metal Cloud Services (BMCS) images.
package bmcs

import (
	"fmt"
	"log"

	client "github.com/hashicorp/packer/builder/oracle/bmcs/client"
	"github.com/hashicorp/packer/common"
	"github.com/hashicorp/packer/helper/communicator"
	"github.com/hashicorp/packer/packer"
	"github.com/mitchellh/multistep"
)

// BuilderId uniquely identifies the builder
const BuilderId = "packer.oracle.bmcs"

// BMCS API version
const bmcsAPIVersion = "20160918"

// Builder is a builder implementation that creates Oracle BMCS custom images.
type Builder struct {
	config *Config
	runner multistep.Runner
}

func (b *Builder) Prepare(rawConfig ...interface{}) ([]string, error) {
	config, err := NewConfig(rawConfig...)
	if err != nil {
		return nil, err
	}
	b.config = config

	return nil, nil
}

func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packer.Artifact, error) {
	driver, err := NewDriverBMCS(b.config)
	if err != nil {
		return nil, err
	}

	// Populate the state bag
	state := new(multistep.BasicStateBag)
	state.Put("config", b.config)
	state.Put("driver", driver)
	state.Put("hook", hook)
	state.Put("ui", ui)

	// Build the steps
	steps := []multistep.Step{
		&stepCreateSSHKey{
			Debug:        b.config.PackerDebug,
			DebugKeyPath: fmt.Sprintf("bmc_%s.pem", b.config.PackerBuildName),
		},
		&stepCreateInstance{},
		&stepInstanceInfo{},
		&communicator.StepConnect{
			Config:    &b.config.Comm,
			Host:      commHost,
			SSHConfig: sshConfig,
		},
		&common.StepProvision{},
		&stepImage{},
	}

	// Run the steps
	b.runner = common.NewRunner(steps, b.config.PackerConfig, ui)
	b.runner.Run(state)

	// If there was an error, return that
	if rawErr, ok := state.GetOk("error"); ok {
		return nil, rawErr.(error)
	}

	// Build the artifact and return it
	artifact := &Artifact{
		Image:  state.Get("image").(client.Image),
		Region: b.config.AccessCfg.Region,
		driver: driver,
	}

	return artifact, nil
}

// Cancel terminates a running build.
func (b *Builder) Cancel() {
	if b.runner != nil {
		log.Println("Cancelling the step runner...")
		b.runner.Cancel()
	}
}