Allow any version string to be used in spec

Fixes #120 (once tagged and released as 0.1.1)

Makefile

@@ -16,7 +16,7 @@ USE_GLOBAL_NAMESPACE ?= false
 
 ifdef WERCKER
     # Insert swear words about mysql group replication and hostname length. Arghh..
-    VERSION := ${WERCKER_GIT_COMMIT}
+    VERSION ?= ${WERCKER_GIT_COMMIT}
     TENANT := "oracle"
 else
     NEW_NAMESPACE ?= e2e-${USER}

examples/cluster/cluster-with-custom-version.yaml

@@ -0,0 +1,6 @@
+apiVersion: "mysql.oracle.com/v1"
+kind: MySQLCluster
+metadata:
+  name: mysql-cluster-5-7-22
+spec:
+  version: 5.7.22-1.1.5

pkg/apis/mysql/v1/cluster.go

@@ -29,13 +29,6 @@ const (
 // ClusterCRDResourcePlural defines the custom resource name for mysqlclusters
 const ClusterCRDResourcePlural = "mysqlclusters"
 
-// TODO (owain) we need to remove this because it's not reasonable for us to maintain a list
-// of all the potential MySQL versions that can be used and in reality, it shouldn't matter
-// too much. The burden of this is not worth the benfit to a user
-var validVersions = []string{
-	defaultVersion,
-}
-
 // MySQLClusterSpec defines the attributes a user can specify when creating a cluster
 type MySQLClusterSpec struct {
 	// Version defines the MySQL Docker image version.

pkg/apis/mysql/v1/cluster_test.go

@@ -18,25 +18,8 @@ import (
 	"testing"
 
 	corev1 "k8s.io/api/core/v1"
-	"k8s.io/apimachinery/pkg/util/validation/field"
 )
 
-func TestValidVersion(t *testing.T) {
-	for _, version := range validVersions {
-		errList := validateVersion(version, field.NewPath("spec", "version"))
-		if len(errList) > 0 {
-			t.Fail()
-		}
-	}
-}
-
-func TestInvalidVersion(t *testing.T) {
-	err := validateVersion("1.2.3", field.NewPath("spec", "version"))
-	if err == nil {
-		t.Fail()
-	}
-}
-
 func TestDefaultReplicas(t *testing.T) {
 	cluster := &MySQLCluster{}
 	cluster.EnsureDefaults()

pkg/apis/mysql/v1/validate_cluster.go

@@ -28,8 +28,6 @@ func validateCluster(c *MySQLCluster) field.ErrorList {
 func validateClusterSpec(s MySQLClusterSpec, fldPath *field.Path) field.ErrorList {
 	allErrs := field.ErrorList{}
 
-	allErrs = append(allErrs, validateVersion(s.Version, fldPath.Child("version"))...)
-
 	return allErrs
 }
 
@@ -39,16 +37,6 @@ func validateClusterStatus(s MySQLClusterStatus, fldPath *field.Path) field.Erro
 	return allErrs
 }
 
-func validateVersion(version string, fldPath *field.Path) field.ErrorList {
-	allErrs := field.ErrorList{}
-	for _, validVersion := range validVersions {
-		if version == validVersion {
-			return allErrs
-		}
-	}
-	return append(allErrs, field.Invalid(fldPath, version, "invalid version specified"))
-}
-
 func validatePhase(phase MySQLClusterPhase, fldPath *field.Path) field.ErrorList {
 	allErrs := field.ErrorList{}
 	for _, validPhase := range MySQLClusterValidPhases {

wercker.yml

@@ -146,7 +146,7 @@ e2e-test:
       name: e2e default tests
       code: |
         export KUBECONFIG="/tmp/kubeconfig"
-        echo -n "${KUBECONFIG_VAR}" | openssl enc -base64 -d -A > "${KUBECONFIG}"
+        echo -n "${KUBECONFIG_V0_1_VAR}" | openssl enc -base64 -d -A > "${KUBECONFIG}"
         ginkgo -nodes=4 -v test/e2e -- \
           --kubeconfig="${KUBECONFIG}" \
           --operator-version="$(cat dist/version.txt)" \