support coredns v1.12.1 (#89)

* support coredns v1.12.1

Signed-off-by: yashsingh74 <[email protected]>

* added option failfast_all_unhealthy_upstreams to return servfail

Signed-off-by: yashsingh74 <[email protected]>

---------

Signed-off-by: yashsingh74 <[email protected]>

Author: yashsingh74

corefile-tool/cmd/validversions_test.go

@@ -15,7 +15,7 @@ func TestNewValidVersionsCmd(t *testing.T) {
 		{
 			name: "Works without error",
 			expectedOutput: `The following are valid CoreDNS versions:
-1.1.3, 1.1.4, 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.2.5, 1.2.6, 1.3.0, 1.3.1, 1.4.0, 1.5.0, 1.5.1, 1.5.2, 1.6.0, 1.6.1, 1.6.2, 1.6.3, 1.6.4, 1.6.5, 1.6.6, 1.6.7, 1.6.9, 1.7.0, 1.7.1, 1.8.0, 1.8.3, 1.8.4, 1.8.5, 1.8.6, 1.8.7, 1.9.0, 1.9.1, 1.9.2, 1.9.3, 1.9.4, 1.10.0, 1.10.1, 1.11.0, 1.11.1, 1.11.3, 1.11.4, 1.12.0
+1.1.3, 1.1.4, 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.2.5, 1.2.6, 1.3.0, 1.3.1, 1.4.0, 1.5.0, 1.5.1, 1.5.2, 1.6.0, 1.6.1, 1.6.2, 1.6.3, 1.6.4, 1.6.5, 1.6.6, 1.6.7, 1.6.9, 1.7.0, 1.7.1, 1.8.0, 1.8.3, 1.8.4, 1.8.5, 1.8.6, 1.8.7, 1.9.0, 1.9.1, 1.9.2, 1.9.3, 1.9.4, 1.10.0, 1.10.1, 1.11.0, 1.11.1, 1.11.3, 1.11.4, 1.12.0, 1.12.1
 `,
 			expectedError: false,
 		},

migration/plugins.go

@@ -441,7 +441,24 @@ var plugins = map[string]map[string]plugin{
 				"policy":         {},
 				"health_check":   {},
 				"max_concurrent": {},
-				"next":           {}, // new option
+				"next":           {},
+				"fail_fast":      {}, // new option
+			},
+		},
+		"v5": plugin{
+			namedOptions: map[string]option{
+				"except":                           {},
+				"force_tcp":                        {},
+				"prefer_udp":                       {},
+				"expire":                           {},
+				"max_fails":                        {},
+				"tls":                              {},
+				"tls_servername":                   {},
+				"policy":                           {},
+				"health_check":                     {},
+				"max_concurrent":                   {},
+				"next":                             {},
+				"failfast_all_unhealthy_upstreams": {}, // new option
 			},
 		},
 	},

migration/versions.go

@@ -30,10 +30,16 @@ type release struct {
 
 // Versions holds a map of plugin/option migrations per CoreDNS release (since 1.1.4)
 var Versions = map[string]release{
+	"1.12.1": {
+		priorVersion:   "1.12.0",
+		dockerImageSHA: "e8c262566636e6bc340ece6473b0eed193cad045384401529721ddbe6463d31c",
+		plugins:        plugins_1_12_0,
+	},
 	"1.12.0": {
+		nextVersion:    "1.12.1",
 		priorVersion:   "1.11.4",
 		dockerImageSHA: "40384aa1f5ea6bfdc77997d243aec73da05f27aed0c5e9d65bfa98933c519d97",
-		plugins:        plugins_1_11_4,
+		plugins:        plugins_1_12_0,
 	},
 	"1.11.4": {
 		nextVersion:    "1.12.0",
@@ -775,6 +781,25 @@ var Versions = map[string]release{
 }`},
 }
 
+var plugins_1_12_0 = map[string]plugin{
+	"errors":       plugins["errors"]["v3"],
+	"log":          plugins["log"]["v1"],
+	"health":       plugins["health"]["v1"],
+	"ready":        {},
+	"autopath":     {},
+	"kubernetes":   plugins["kubernetes"]["v8"],
+	"k8s_external": plugins["k8s_external"]["v2"],
+	"prometheus":   {},
+	"forward":      plugins["forward"]["v5"], // add failfast_all_unhealthy_upstreams option
+	"cache":        plugins["cache"]["v4"],
+	"loop":         {},
+	"reload":       {},
+	"loadbalance":  {},
+	"hosts":        plugins["hosts"]["v1"],
+	"rewrite":      plugins["rewrite"]["v3"],
+	"transfer":     plugins["transfer"]["v1"],
+}
+
 var plugins_1_11_4 = map[string]plugin{
 	"errors":       plugins["errors"]["v3"],
 	"log":          plugins["log"]["v1"],