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plugin/forward: health_check needs to normalize a specified domain name (#5543)

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* plugin/forward: convert the specified domain of health_check to Fqdn
* plugin/forward: update readme for health check

Signed-off-by: vanceli <vanceli@tencent.com>
This commit is contained in:
Vancl 2022-08-15 22:16:15 +08:00 • committed by GitHub
parent 22e77b2cf2
commit 4033d7aeba
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 19 additions and 8 deletions
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13
plugin/forward/setup_test.go
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@ -8,6 +8,8 @@ import (
"github.com/coredns/caddy"
"github.com/coredns/coredns/core/dnsserver"
"github.com/miekg/dns"
)
func TestSetup(t *testing.T) {
@ -22,7 +24,7 @@ func TestSetup(t *testing.T) {
}{
// positive
{"forward . 127.0.0.1", false, ".", nil, 2, options{hcRecursionDesired: true, hcDomain: "."}, ""},
{"forward . 127.0.0.1 {\nhealth_check 0.5s domain example.org\n}\n", false, ".", nil, 2, options{hcRecursionDesired: true, hcDomain: "example.org"}, ""},
{"forward . 127.0.0.1 {\nhealth_check 0.5s domain example.org\n}\n", false, ".", nil, 2, options{hcRecursionDesired: true, hcDomain: "example.org."}, ""},
{"forward . 127.0.0.1 {\nexcept miek.nl\n}\n", false, ".", nil, 2, options{hcRecursionDesired: true, hcDomain: "."}, ""},
{"forward . 127.0.0.1 {\nmax_fails 3\n}\n", false, ".", nil, 3, options{hcRecursionDesired: true, hcDomain: "."}, ""},
{"forward . 127.0.0.1 {\nforce_tcp\n}\n", false, ".", nil, 2, options{forceTCP: true, hcRecursionDesired: true, hcDomain: "."}, ""},
@ -243,13 +245,16 @@ func TestSetupHealthCheck(t *testing.T) {
{"forward . 127.0.0.1\n", false, true, ".", ""},
{"forward . 127.0.0.1 {\nhealth_check 0.5s\n}\n", false, true, ".", ""},
{"forward . 127.0.0.1 {\nhealth_check 0.5s no_rec\n}\n", false, false, ".", ""},
{"forward . 127.0.0.1 {\nhealth_check 0.5s no_rec domain example.org\n}\n", false, false, "example.org", ""},
{"forward . 127.0.0.1 {\nhealth_check 0.5s domain example.org\n}\n", false, true, "example.org", ""},
{"forward . 127.0.0.1 {\nhealth_check 0.5s no_rec domain example.org\n}\n", false, false, "example.org.", ""},
{"forward . 127.0.0.1 {\nhealth_check 0.5s domain example.org\n}\n", false, true, "example.org.", ""},
{"forward . 127.0.0.1 {\nhealth_check 0.5s domain .\n}\n", false, true, ".", ""},
{"forward . 127.0.0.1 {\nhealth_check 0.5s domain example.org.\n}\n", false, true, "example.org.", ""},
// negative
{"forward . 127.0.0.1 {\nhealth_check no_rec\n}\n", true, true, ".", "time: invalid duration"},
{"forward . 127.0.0.1 {\nhealth_check domain example.org\n}\n", true, true, "example.org", "time: invalid duration"},
{"forward . 127.0.0.1 {\nhealth_check 0.5s rec\n}\n", true, true, ".", "health_check: unknown option rec"},
{"forward . 127.0.0.1 {\nhealth_check 0.5s domain\n}\n", true, true, ".", "Wrong argument count or unexpected line ending after 'domain'"},
{"forward . 127.0.0.1 {\nhealth_check 0.5s domain example..org\n}\n", true, true, ".", "health_check: invalid domain name"},
}
for i, test := range tests {
@ -275,7 +280,7 @@ func TestSetupHealthCheck(t *testing.T) {
f := fs[0]
if f.opts.hcRecursionDesired != test.expectedRecVal || f.proxies[0].health.GetRecursionDesired() != test.expectedRecVal ||
f.opts.hcDomain != test.expectedDomain || f.proxies[0].health.GetDomain() != test.expectedDomain {
f.opts.hcDomain != test.expectedDomain || f.proxies[0].health.GetDomain() != test.expectedDomain || !dns.IsFqdn(f.proxies[0].health.GetDomain()) {
t.Errorf("Test %d: expectedRec: %v, got: %v. expectedDomain: %s, got: %s. ", i, test.expectedRecVal, f.opts.hcRecursionDesired, test.expectedDomain, f.opts.hcDomain)
}
}