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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,276 @@ | ||
| package proxy_test | ||
|
|
||
| import ( | ||
| "net" | ||
| "net/netip" | ||
| "testing" | ||
|
|
||
| "github.com/AdguardTeam/dnsproxy/internal/dnsproxytest" | ||
| "github.com/AdguardTeam/dnsproxy/proxy" | ||
| "github.com/AdguardTeam/dnsproxy/upstream" | ||
| "github.com/AdguardTeam/golibs/errors" | ||
| "github.com/AdguardTeam/golibs/logutil/slogutil" | ||
| "github.com/AdguardTeam/golibs/netutil" | ||
| "github.com/miekg/dns" | ||
| "github.com/stretchr/testify/assert" | ||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
||
| func TestCollectQueryStats(t *testing.T) { | ||
| const ( | ||
| listenIP = "127.0.0.1" | ||
| ) | ||
|
|
||
| var ( | ||
| testReq = &dns.Msg{ | ||
| Question: []dns.Question{{ | ||
| Name: "test.", | ||
| Qtype: dns.TypeA, | ||
| Qclass: dns.ClassINET, | ||
| }}, | ||
| } | ||
|
|
||
| defaultTrustedProxies netutil.SubnetSet = netutil.SliceSubnetSet{ | ||
| netip.MustParsePrefix("0.0.0.0/0"), | ||
| netip.MustParsePrefix("::0/0"), | ||
| } | ||
|
|
||
| localhostAnyPort = netip.MustParseAddrPort(netutil.JoinHostPort(listenIP, 0)) | ||
| ) | ||
|
|
||
| ups := &dnsproxytest.FakeUpstream{ | ||
| OnExchange: func(req *dns.Msg) (resp *dns.Msg, err error) { | ||
| return (&dns.Msg{}).SetReply(req), nil | ||
| }, | ||
| OnAddress: func() (addr string) { return "upstream" }, | ||
| OnClose: func() (err error) { return nil }, | ||
| } | ||
|
|
||
| failUps := &dnsproxytest.FakeUpstream{ | ||
| OnExchange: func(req *dns.Msg) (resp *dns.Msg, err error) { | ||
| return nil, errors.Error("exchange error") | ||
| }, | ||
| OnAddress: func() (addr string) { return "fail.upstream" }, | ||
| OnClose: func() (err error) { return nil }, | ||
| } | ||
|
|
||
| conf := &proxy.Config{ | ||
| Logger: slogutil.NewDiscardLogger(), | ||
| UDPListenAddr: []*net.UDPAddr{net.UDPAddrFromAddrPort(localhostAnyPort)}, | ||
| TCPListenAddr: []*net.TCPAddr{net.TCPAddrFromAddrPort(localhostAnyPort)}, | ||
| TrustedProxies: defaultTrustedProxies, | ||
| RatelimitSubnetLenIPv4: 24, | ||
| RatelimitSubnetLenIPv6: 64, | ||
| } | ||
|
|
||
| testCases := []struct { | ||
| isExchangeErr assert.BoolAssertionFunc | ||
| config *proxy.UpstreamConfig | ||
| fallbackConfig *proxy.UpstreamConfig | ||
| name string | ||
| mode proxy.UpstreamMode | ||
| mainCount int | ||
| fallbackCount int | ||
| isMainErr bool | ||
| isFallbackErr bool | ||
| }{{ | ||
| isExchangeErr: assert.False, | ||
| config: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{ups}, | ||
| }, | ||
| fallbackConfig: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{ups}, | ||
| }, | ||
| name: "load_balance_success", | ||
| mode: proxy.UpstreamModeLoadBalance, | ||
| mainCount: 1, | ||
| fallbackCount: 0, | ||
| isMainErr: false, | ||
| isFallbackErr: false, | ||
| }, { | ||
| isExchangeErr: assert.True, | ||
| config: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{failUps}, | ||
| }, | ||
| fallbackConfig: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{failUps, failUps}, | ||
| }, | ||
| name: "load_balance_bad", | ||
| mode: proxy.UpstreamModeLoadBalance, | ||
| mainCount: 1, | ||
| fallbackCount: 2, | ||
| isMainErr: true, | ||
| isFallbackErr: true, | ||
| }, { | ||
| isExchangeErr: assert.False, | ||
| config: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{ups, failUps}, | ||
| }, | ||
| fallbackConfig: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{ups}, | ||
| }, | ||
| name: "parallel_success", | ||
| mode: proxy.UpstreamModeParallel, | ||
| mainCount: 1, | ||
| fallbackCount: 0, | ||
| isMainErr: false, | ||
| isFallbackErr: false, | ||
| }, { | ||
| isExchangeErr: assert.False, | ||
| config: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{failUps}, | ||
| }, | ||
| fallbackConfig: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{ups}, | ||
| }, | ||
| name: "parallel_bad_fallback_success", | ||
| mode: proxy.UpstreamModeParallel, | ||
| mainCount: 1, | ||
| fallbackCount: 1, | ||
| isMainErr: true, | ||
| isFallbackErr: false, | ||
| }, { | ||
| isExchangeErr: assert.True, | ||
| config: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{failUps, failUps}, | ||
| }, | ||
| fallbackConfig: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{failUps, failUps, failUps}, | ||
| }, | ||
| name: "parallel_bad", | ||
| mode: proxy.UpstreamModeParallel, | ||
| mainCount: 2, | ||
| fallbackCount: 3, | ||
| isMainErr: true, | ||
| isFallbackErr: true, | ||
| }, { | ||
| isExchangeErr: assert.False, | ||
| config: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{ups}, | ||
| }, | ||
| fallbackConfig: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{ups}, | ||
| }, | ||
| name: "fastest_single_success", | ||
| mode: proxy.UpstreamModeFastestAddr, | ||
| mainCount: 1, | ||
| fallbackCount: 0, | ||
| isMainErr: false, | ||
| isFallbackErr: false, | ||
| }, { | ||
| isExchangeErr: assert.False, | ||
| config: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{ups, ups}, | ||
| }, | ||
| fallbackConfig: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{ups}, | ||
| }, | ||
| name: "fastest_multiple_success", | ||
| mode: proxy.UpstreamModeFastestAddr, | ||
| mainCount: 2, | ||
| fallbackCount: 0, | ||
| isMainErr: false, | ||
| isFallbackErr: false, | ||
| }, { | ||
| isExchangeErr: assert.False, | ||
| config: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{ups, failUps}, | ||
| }, | ||
| fallbackConfig: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{ups}, | ||
| }, | ||
| name: "fastest_mixed_success", | ||
| mode: proxy.UpstreamModeFastestAddr, | ||
| mainCount: 2, | ||
| fallbackCount: 0, | ||
| isMainErr: true, | ||
| isFallbackErr: false, | ||
| }, { | ||
| isExchangeErr: assert.True, | ||
| config: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{failUps, failUps}, | ||
| }, | ||
| fallbackConfig: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{failUps, failUps, failUps}, | ||
| }, | ||
| name: "fastest_multiple_bad", | ||
| mode: proxy.UpstreamModeFastestAddr, | ||
| mainCount: 2, | ||
| fallbackCount: 3, | ||
| isMainErr: true, | ||
| isFallbackErr: true, | ||
| }, { | ||
| isExchangeErr: assert.False, | ||
| config: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{failUps, failUps}, | ||
| }, | ||
| fallbackConfig: &proxy.UpstreamConfig{ | ||
| Upstreams: []upstream.Upstream{ups}, | ||
| }, | ||
| name: "fastest_bad_fallback_success", | ||
| mode: proxy.UpstreamModeFastestAddr, | ||
| mainCount: 2, | ||
| fallbackCount: 1, | ||
| isMainErr: true, | ||
| isFallbackErr: false, | ||
| }} | ||
|
|
||
| for _, tc := range testCases { | ||
| t.Run(tc.name, func(t *testing.T) { | ||
| conf.UpstreamConfig = tc.config | ||
| conf.Fallbacks = tc.fallbackConfig | ||
| conf.UpstreamMode = tc.mode | ||
|
|
||
| p, err := proxy.New(conf) | ||
| require.NoError(t, err) | ||
|
|
||
| d := &proxy.DNSContext{Req: testReq} | ||
|
|
||
| err = p.Resolve(d) | ||
| tc.isExchangeErr(t, err != nil) | ||
|
|
||
| stats := d.QueryStatistics() | ||
| assertQueryStats( | ||
| t, | ||
| stats, | ||
| tc.mainCount, | ||
| tc.isMainErr, | ||
| tc.fallbackCount, | ||
| tc.isFallbackErr, | ||
| ) | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| // assertQueryStats asserts the statistics using the provided parameters. | ||
| func assertQueryStats( | ||
| t *testing.T, | ||
| stats *proxy.QueryStatistics, | ||
| mainCount int, | ||
| isMainErr bool, | ||
| fallbackCount int, | ||
| isFallbackErr bool, | ||
| ) { | ||
| t.Helper() | ||
|
|
||
| main := stats.Main() | ||
| assert.Equal(t, mainCount, len(main), "main stats count") | ||
|
|
||
| fallback := stats.Fallback() | ||
| assert.Equal(t, fallbackCount, len(fallback), "fallback stats count") | ||
|
|
||
| assert.Equal(t, isMainErr, isErrorInStats(main), "main err") | ||
| assert.Equal(t, isFallbackErr, isErrorInStats(fallback), "fallback err") | ||
| } | ||
|
|
||
| // isErrorInStats is a helper function for tests that returns true if the | ||
| // upstream statistics contain an DNS lookup error. | ||
| func isErrorInStats(stats []*proxy.UpstreamStatistics) (ok bool) { | ||
| for _, u := range stats { | ||
| if u.Error != nil { | ||
| return true | ||
| } | ||
| } | ||
|
|
||
| return false | ||
| } |
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