/
listStreams.go
56 lines (51 loc) · 1.48 KB
/
listStreams.go
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package amipublisher
import (
"io/ioutil"
stdlog "log"
uclient "github.com/Cloud-Foundations/Dominator/imageunpacker/client"
"github.com/Cloud-Foundations/Dominator/lib/awsutil"
"github.com/Cloud-Foundations/Dominator/lib/log"
"github.com/aws/aws-sdk-go/service/ec2"
)
var nullLogger = stdlog.New(ioutil.Discard, "", 0)
func listStreams(targets awsutil.TargetList, skipList awsutil.TargetList,
name string, logger log.Logger) (
map[string]struct{}, error) {
resultsChannel := make(chan map[string]struct{}, 1)
numTargets, err := awsutil.ForEachTarget(targets, skipList,
func(awsService *ec2.EC2, account, region string, logger log.Logger) {
results, err := listTargetStreams(awsService, name, logger)
if err != nil {
logger.Println(err)
}
resultsChannel <- results
},
logger)
// Collect results.
results := make(map[string]struct{})
for i := 0; i < numTargets; i++ {
result := <-resultsChannel
for stream := range result {
results[stream] = struct{}{}
}
}
return results, err
}
func listTargetStreams(awsService *ec2.EC2, name string, logger log.Logger) (
map[string]struct{}, error) {
_, srpcClient, err := getWorkingUnpacker(awsService, name, nullLogger)
if err != nil {
return nil, nil
}
defer srpcClient.Close()
status, err := uclient.GetStatus(srpcClient)
if err != nil {
logger.Println(err)
return nil, err
}
streams := make(map[string]struct{})
for stream := range status.ImageStreams {
streams[stream] = struct{}{}
}
return streams, nil
}