mirror of https://github.com/kubernetes/kops.git
74 lines
1.9 KiB
Go
74 lines
1.9 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package aws
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import (
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"fmt"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/service/ec2"
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"github.com/aws/aws-sdk-go/service/ec2/ec2iface"
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"k8s.io/kops/protokube/pkg/gossip"
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)
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type SeedProvider struct {
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ec2 ec2iface.EC2API
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tags map[string]string
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}
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var _ gossip.SeedProvider = &SeedProvider{}
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func (p *SeedProvider) GetSeeds() ([]string, error) {
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request := &ec2.DescribeInstancesInput{}
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for k, v := range p.tags {
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filter := &ec2.Filter{
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Name: aws.String("tag:" + k),
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Values: aws.StringSlice([]string{v}),
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}
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request.Filters = append(request.Filters, filter)
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}
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request.Filters = append(request.Filters, &ec2.Filter{
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Name: aws.String("instance-state-name"),
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Values: aws.StringSlice([]string{"running", "pending"}),
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})
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var seeds []string
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err := p.ec2.DescribeInstancesPages(request, func(p *ec2.DescribeInstancesOutput, lastPage bool) (shouldContinue bool) {
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for _, r := range p.Reservations {
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for _, i := range r.Instances {
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ip := aws.StringValue(i.PrivateIpAddress)
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if ip != "" {
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seeds = append(seeds, ip)
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}
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}
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}
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return true
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})
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if err != nil {
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return nil, fmt.Errorf("error querying for EC2 instances: %v", err)
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}
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return seeds, nil
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}
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func NewSeedProvider(ec2 ec2iface.EC2API, tags map[string]string) (*SeedProvider, error) {
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return &SeedProvider{
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ec2: ec2,
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tags: tags,
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}, nil
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}
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