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* Add middleware/cache Add a caching middleware that caches nxdomain, nodata and successful responses. It differentiates between DNSSEC on normal DNS replies. Each reply is compress and scrubbed so it will fit the specific client asking for it. * first simple test, less exporting of stuff * more * Add middleware/cache Add a caching middleware that caches nxdomain, nodata and successful responses. It differentiates between DNSSEC on normal DNS replies. Each reply is compressed and scrubbed so it will fit the specific client asking for it. The TTL is decremented with the time spend in the cache. There is syntax that allows you to cap the TTL for all records, no matter what. This allows for a shortlived cache, just to absorb query peaks. +Tests * cache test infrastructure * Testing
113 lines
2.7 KiB
Go
113 lines
2.7 KiB
Go
package cache
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import (
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"testing"
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"time"
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"github.com/miekg/coredns/middleware"
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"github.com/miekg/coredns/middleware/test"
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"github.com/miekg/dns"
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)
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type cacheTestCase struct {
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test.Case
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in test.Case
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AuthenticatedData bool
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Authoritative bool
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RecursionAvailable bool
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Truncated bool
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}
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var cacheTestCases = []cacheTestCase{
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{
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RecursionAvailable: true, AuthenticatedData: true, Authoritative: true,
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Case: test.Case{
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Qname: "miek.nl.", Qtype: dns.TypeMX,
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Answer: []dns.RR{
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test.MX("miek.nl. 1800 IN MX 1 aspmx.l.google.com."),
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test.MX("miek.nl. 1800 IN MX 10 aspmx2.googlemail.com."),
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test.MX("miek.nl. 1800 IN MX 10 aspmx3.googlemail.com."),
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test.MX("miek.nl. 1800 IN MX 5 alt1.aspmx.l.google.com."),
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test.MX("miek.nl. 1800 IN MX 5 alt2.aspmx.l.google.com."),
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},
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},
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in: test.Case{
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Qname: "miek.nl.", Qtype: dns.TypeMX,
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Answer: []dns.RR{
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test.MX("miek.nl. 1800 IN MX 1 aspmx.l.google.com."),
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test.MX("miek.nl. 1800 IN MX 10 aspmx2.googlemail.com."),
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test.MX("miek.nl. 1800 IN MX 10 aspmx3.googlemail.com."),
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test.MX("miek.nl. 1800 IN MX 5 alt1.aspmx.l.google.com."),
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test.MX("miek.nl. 1800 IN MX 5 alt2.aspmx.l.google.com."),
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},
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},
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},
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{
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Truncated: true,
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Case: test.Case{
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Qname: "miek.nl.", Qtype: dns.TypeMX,
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Answer: []dns.RR{test.MX("miek.nl. 1800 IN MX 1 aspmx.l.google.com.")},
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},
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in: test.Case{},
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},
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}
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func cacheMsg(m *dns.Msg, tc cacheTestCase) *dns.Msg {
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m.RecursionAvailable = tc.RecursionAvailable
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m.AuthenticatedData = tc.AuthenticatedData
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m.Authoritative = tc.Authoritative
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m.Truncated = tc.Truncated
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m.Answer = tc.in.Answer
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m.Ns = tc.in.Ns
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// m.Extra = tc.in.Extra , not the OPT record!
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return m
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}
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func newTestCache() (Cache, *CachingResponseWriter) {
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c := NewCache(0, []string{"."}, nil)
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crr := NewCachingResponseWriter(nil, c.cache, time.Duration(0))
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return c, crr
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}
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func TestCache(t *testing.T) {
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c, crr := newTestCache()
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for _, tc := range cacheTestCases {
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m := tc.in.Msg()
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m = cacheMsg(m, tc)
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do := tc.in.Do
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mt, _ := classify(m)
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key := cacheKey(m, mt, do)
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crr.Set(m, key, mt)
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name := middleware.Name(m.Question[0].Name).Normalize()
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qtype := m.Question[0].Qtype
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i, ok := c.Get(name, qtype, do)
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if !ok && !m.Truncated {
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t.Errorf("Truncated message should not have been cached")
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}
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if ok {
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resp := i.toMsg(m)
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if !test.Header(t, tc.Case, resp) {
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t.Logf("%v\n", resp)
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continue
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}
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if !test.Section(t, tc.Case, test.Answer, resp.Answer) {
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t.Logf("%v\n", resp)
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}
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if !test.Section(t, tc.Case, test.Ns, resp.Ns) {
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t.Logf("%v\n", resp)
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}
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if !test.Section(t, tc.Case, test.Extra, resp.Extra) {
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t.Logf("%v\n", resp)
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}
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}
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}
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}
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