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configurable dns search domains

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Add a --dns-search parameter and a DnsSearch
configuration field for specifying dns search
domains.

Docker-DCO-1.1-Signed-off-by: Daniel Norberg <daniel.norberg@gmail.com> (github: danielnorberg)
Upstream-commit: fbfac21ed4de550ce72d993810dc07a2c4877a88
Component: engine
This commit is contained in:
Daniel Norberg
2014-02-07 11:48:14 -05:00
committed by Daniel Norberg
parent 6aee2c6f6c
commit c037f13ab8
13 changed files with 230 additions and 30 deletions
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51
components/engine/utils/utils_test.go
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@ -444,6 +444,30 @@ func TestParsePortMapping(t *testing.T) {
}
}
func TestGetNameservers(t *testing.T) {
for resolv, result := range map[string][]string{`
nameserver 1.2.3.4
nameserver 40.3.200.10
search example.com`: {"1.2.3.4", "40.3.200.10"},
`search example.com`: {},
`nameserver 1.2.3.4
search example.com
nameserver 4.30.20.100`: {"1.2.3.4", "4.30.20.100"},
``: {},
` nameserver 1.2.3.4 `: {"1.2.3.4"},
`search example.com
nameserver 1.2.3.4
#nameserver 4.3.2.1`: {"1.2.3.4"},
`search example.com
nameserver 1.2.3.4 # not 4.3.2.1`: {"1.2.3.4"},
} {
test := GetNameservers([]byte(resolv))
if !StrSlicesEqual(test, result) {
t.Fatalf("Wrong nameserver string {%s} should be %v. Input: %s", test, result, resolv)
}
}
}
func TestGetNameserversAsCIDR(t *testing.T) {
for resolv, result := range map[string][]string{`
nameserver 1.2.3.4
@ -468,6 +492,33 @@ nameserver 1.2.3.4 # not 4.3.2.1`: {"1.2.3.4/32"},
}
}
func TestGetSearchDomains(t *testing.T) {
for resolv, result := range map[string][]string{
`search example.com`: {"example.com"},
`search example.com # ignored`: {"example.com"},
` search example.com `: {"example.com"},
` search example.com # ignored`: {"example.com"},
`search foo.example.com example.com`: {"foo.example.com", "example.com"},
` search foo.example.com example.com `: {"foo.example.com", "example.com"},
` search foo.example.com example.com # ignored`: {"foo.example.com", "example.com"},
``: {},
`# ignored`: {},
`nameserver 1.2.3.4
search foo.example.com example.com`: {"foo.example.com", "example.com"},
`nameserver 1.2.3.4
search dup1.example.com dup2.example.com
search foo.example.com example.com`: {"foo.example.com", "example.com"},
`nameserver 1.2.3.4
search foo.example.com example.com
nameserver 4.30.20.100`: {"foo.example.com", "example.com"},
} {
test := GetSearchDomains([]byte(resolv))
if !StrSlicesEqual(test, result) {
t.Fatalf("Wrong search domain string {%s} should be %v. Input: %s", test, result, resolv)
}
}
}
func StrSlicesEqual(a, b []string) bool {
if len(a) != len(b) {
return false