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cluster.go
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/
cluster.go
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// Copyright 2016 CoreOS, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package aws
import (
"os"
"path/filepath"
ctplatform "github.com/coreos/container-linux-config-transpiler/config/platform"
"github.com/coreos/pkg/capnslog"
"github.com/coreos/mantle/platform"
"github.com/coreos/mantle/platform/api/aws"
"github.com/coreos/mantle/platform/conf"
)
const (
Platform platform.Name = "aws"
)
var (
plog = capnslog.NewPackageLogger("github.com/coreos/mantle", "platform/machine/aws")
)
type cluster struct {
*platform.BaseCluster
api *aws.API
}
// NewCluster creates an instance of a Cluster suitable for spawning
// instances on Amazon Web Services' Elastic Compute platform.
//
// NewCluster will consume the environment variables $AWS_REGION,
// $AWS_ACCESS_KEY_ID, and $AWS_SECRET_ACCESS_KEY to determine the region to
// spawn instances in and the credentials to use to authenticate.
func NewCluster(opts *aws.Options, rconf *platform.RuntimeConfig) (platform.Cluster, error) {
api, err := aws.New(opts)
if err != nil {
return nil, err
}
bc, err := platform.NewBaseCluster(opts.Options, rconf, Platform, ctplatform.EC2)
if err != nil {
return nil, err
}
ac := &cluster{
BaseCluster: bc,
api: api,
}
if !rconf.NoSSHKeyInMetadata {
keys, err := ac.Keys()
if err != nil {
return nil, err
}
if err := api.AddKey(bc.Name(), keys[0].String()); err != nil {
return nil, err
}
}
return ac, nil
}
func (ac *cluster) NewMachine(userdata *conf.UserData) (platform.Machine, error) {
conf, err := ac.RenderUserData(userdata, map[string]string{
"$public_ipv4": "${COREOS_EC2_IPV4_PUBLIC}",
"$private_ipv4": "${COREOS_EC2_IPV4_LOCAL}",
})
if err != nil {
return nil, err
}
var keyname string
if !ac.RuntimeConf().NoSSHKeyInMetadata {
keyname = ac.Name()
}
instances, err := ac.api.CreateInstances(ac.Name(), keyname, conf.String(), 1)
if err != nil {
return nil, err
}
mach := &machine{
cluster: ac,
mach: instances[0],
}
mach.dir = filepath.Join(ac.RuntimeConf().OutputDir, mach.ID())
if err := os.Mkdir(mach.dir, 0777); err != nil {
mach.Destroy()
return nil, err
}
confPath := filepath.Join(mach.dir, "user-data")
if err := conf.WriteFile(confPath); err != nil {
mach.Destroy()
return nil, err
}
if mach.journal, err = platform.NewJournal(mach.dir); err != nil {
mach.Destroy()
return nil, err
}
if err := platform.StartMachine(mach, mach.journal); err != nil {
mach.Destroy()
return nil, err
}
ac.AddMach(mach)
return mach, nil
}
func (ac *cluster) Destroy() {
if !ac.RuntimeConf().NoSSHKeyInMetadata {
if err := ac.api.DeleteKey(ac.Name()); err != nil {
plog.Errorf("Error deleting key %v: %v", ac.Name(), err)
}
}
ac.BaseCluster.Destroy()
}