Switch from ThirdPartyResources to CustomResourceDefinitions (#381)

Switch Fission's storage over to the new CustomResourceDefinitions, from the deprecated ThirdPartyResources. This allows us to be compatible with Kubernets 1.8 and onwards. This also adds a CLI tool for dumping state from an old fission version and restoring state into new CRDs. The storage service is unaffected by this change.
2017-11-04 14:55:16 -07:00
parent 746c51901d
commit 5f14b9b0ae
76 changed files with 1223 additions and 701 deletions
@@ -0,0 +1,170 @@
+/*
+Copyright 2016 The Fission Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package crd
+
+import (
+	apiextensionsv1beta1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
+	apiextensionsclient "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
+	"k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+const (
+	crdGroupName = "fission.io"
+	crdVersion   = "v1"
+)
+
+// ensureCRD checks if the given CRD type exists, and creates it if
+// needed. (Note that this creates the CRD type; it doesn't create any
+// _instances_ of that type.)
+func ensureCRD(clientset *apiextensionsclient.Clientset, crd *apiextensionsv1beta1.CustomResourceDefinition) error {
+	_, err := clientset.Apiextensions().CustomResourceDefinitions().Get(crd.ObjectMeta.Name, metav1.GetOptions{})
+	if err != nil {
+		if errors.IsNotFound(err) {
+			_, err := clientset.Apiextensions().CustomResourceDefinitions().Create(crd)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+// Ensure CRDs
+func EnsureFissionCRDs(clientset *apiextensionsclient.Clientset) error {
+	crds := []apiextensionsv1beta1.CustomResourceDefinition{
+		// Functions
+		{
+			ObjectMeta: metav1.ObjectMeta{
+				Name: "functions.fission.io",
+			},
+			Spec: apiextensionsv1beta1.CustomResourceDefinitionSpec{
+				Group:   crdGroupName,
+				Version: crdVersion,
+				Scope:   apiextensionsv1beta1.NamespaceScoped,
+				Names: apiextensionsv1beta1.CustomResourceDefinitionNames{
+					Kind:     "Function",
+					Plural:   "functions",
+					Singular: "function",
+				},
+			},
+		},
+		// Environments (function containers)
+		{
+			ObjectMeta: metav1.ObjectMeta{
+				Name: "environments.fission.io",
+			},
+			Spec: apiextensionsv1beta1.CustomResourceDefinitionSpec{
+				Group:   crdGroupName,
+				Version: crdVersion,
+				Scope:   apiextensionsv1beta1.NamespaceScoped,
+				Names: apiextensionsv1beta1.CustomResourceDefinitionNames{
+					Kind:     "Environment",
+					Plural:   "environments",
+					Singular: "environment",
+				},
+			},
+		},
+		// HTTP triggers for functions
+		{
+			ObjectMeta: metav1.ObjectMeta{
+				Name: "httptriggers.fission.io",
+			},
+			Spec: apiextensionsv1beta1.CustomResourceDefinitionSpec{
+				Group:   crdGroupName,
+				Version: crdVersion,
+				Scope:   apiextensionsv1beta1.NamespaceScoped,
+				Names: apiextensionsv1beta1.CustomResourceDefinitionNames{
+					Kind:     "HTTPTrigger",
+					Plural:   "httptriggers",
+					Singular: "httptrigger",
+				},
+			},
+		},
+		// Kubernetes watch triggers for functions
+		{
+			ObjectMeta: metav1.ObjectMeta{
+				Name: "kuberneteswatchtriggers.fission.io",
+			},
+			Spec: apiextensionsv1beta1.CustomResourceDefinitionSpec{
+				Group:   crdGroupName,
+				Version: crdVersion,
+				Scope:   apiextensionsv1beta1.NamespaceScoped,
+				Names: apiextensionsv1beta1.CustomResourceDefinitionNames{
+					Kind:     "KubernetesWatchTrigger",
+					Plural:   "kuberneteswatchtriggers",
+					Singular: "kuberneteswatchtrigger",
+				},
+			},
+		},
+		// Time-based triggers for functions
+		{
+			ObjectMeta: metav1.ObjectMeta{
+				Name: "timetriggers.fission.io",
+			},
+			Spec: apiextensionsv1beta1.CustomResourceDefinitionSpec{
+				Group:   crdGroupName,
+				Version: crdVersion,
+				Scope:   apiextensionsv1beta1.NamespaceScoped,
+				Names: apiextensionsv1beta1.CustomResourceDefinitionNames{
+					Kind:     "TimeTrigger",
+					Plural:   "timetriggers",
+					Singular: "timetrigger",
+				},
+			},
+		},
+		// Message queue triggers for functions
+		{
+			ObjectMeta: metav1.ObjectMeta{
+				Name: "messagequeuetriggers.fission.io",
+			},
+			Spec: apiextensionsv1beta1.CustomResourceDefinitionSpec{
+				Group:   crdGroupName,
+				Version: crdVersion,
+				Scope:   apiextensionsv1beta1.NamespaceScoped,
+				Names: apiextensionsv1beta1.CustomResourceDefinitionNames{
+					Kind:     "MessageQueueTrigger",
+					Plural:   "messagequeuetriggers",
+					Singular: "messagequeuetrigger",
+				},
+			},
+		},
+		// Packages: archives containing source or binaries for one or more functions
+		{
+			ObjectMeta: metav1.ObjectMeta{
+				Name: "packages.fission.io",
+			},
+			Spec: apiextensionsv1beta1.CustomResourceDefinitionSpec{
+				Group:   crdGroupName,
+				Version: crdVersion,
+				Scope:   apiextensionsv1beta1.NamespaceScoped,
+				Names: apiextensionsv1beta1.CustomResourceDefinitionNames{
+					Kind:     "Package",
+					Plural:   "packages",
+					Singular: "package",
+				},
+			},
+		},
+	}
+	for _, crd := range crds {
+		err := ensureCRD(clientset, &crd)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}