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Merge pull request #4775 from LK4D4/remove_duplicate_dns_#4714

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Remove duplication of Dns in config merging.
This commit is contained in:
Michael Crosby 2014-03-21 17:08:06 -07:00
commit 5294bf7e67
2 changed files with 10 additions and 3 deletions
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2
runconfig/config_test.go
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@ -247,7 +247,7 @@ func TestMerge(t *testing.T) {
volumesUser := make(map[string]struct{})
volumesUser["/test3"] = struct{}{}
configUser := &Config{
Dns: []string{"3.3.3.3"},
Dns: []string{"2.2.2.2", "3.3.3.3"},
PortSpecs: []string{"3333:2222", "3333:3333"},
Env: []string{"VAR2=3", "VAR3=3"},
Volumes: volumesUser,

11
runconfig/merge.go
View file

@ -97,8 +97,15 @@ func Merge(userConf, imageConf *Config) error {
if userConf.Dns == nil || len(userConf.Dns) == 0 {
userConf.Dns = imageConf.Dns
} else {
//duplicates aren't an issue here
userConf.Dns = append(userConf.Dns, imageConf.Dns...)
dnsSet := make(map[string]struct{}, len(userConf.Dns))
for _, dns := range userConf.Dns {
dnsSet[dns] = struct{}{}
}
for _, dns := range imageConf.Dns {
if _, exists := dnsSet[dns]; !exists {
userConf.Dns = append(userConf.Dns, dns)
}
}
}
if userConf.DnsSearch == nil || len(userConf.DnsSearch) == 0 {
userConf.DnsSearch = imageConf.DnsSearch