Canary deployments for fission functions. (#892)

crd/canaryConfig.go

@@ -0,0 +1,120 @@
+/*
+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 (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/watch"
+	"k8s.io/client-go/kubernetes/scheme"
+	"k8s.io/client-go/rest"
+)
+
+type (
+	CanaryConfigInterface interface {
+		Create(*CanaryConfig) (*CanaryConfig, error)
+		Get(name string) (*CanaryConfig, error)
+		Update(*CanaryConfig) (*CanaryConfig, error)
+		Delete(name string, options *metav1.DeleteOptions) error
+		List(opts metav1.ListOptions) (*CanaryConfigList, error)
+		Watch(opts metav1.ListOptions) (watch.Interface, error)
+	}
+
+	canaryConfigClient struct {
+		client    *rest.RESTClient
+		namespace string
+	}
+)
+
+func MakeCanaryConfigInterface(crdClient *rest.RESTClient, namespace string) CanaryConfigInterface {
+	return &canaryConfigClient{
+		client:    crdClient,
+		namespace: namespace,
+	}
+}
+
+func (c *canaryConfigClient) Create(f *CanaryConfig) (*CanaryConfig, error) {
+	var result CanaryConfig
+	err := c.client.Post().
+		Resource("canaryconfigs").
+		Namespace(c.namespace).
+		Body(f).
+		Do().Into(&result)
+	if err != nil {
+		return nil, err
+	}
+	return &result, nil
+}
+
+func (c *canaryConfigClient) Get(name string) (*CanaryConfig, error) {
+	var result CanaryConfig
+	err := c.client.Get().
+		Resource("canaryconfigs").
+		Namespace(c.namespace).
+		Name(name).
+		Do().Into(&result)
+	if err != nil {
+		return nil, err
+	}
+	return &result, nil
+}
+
+func (c *canaryConfigClient) Update(f *CanaryConfig) (*CanaryConfig, error) {
+	var result CanaryConfig
+	err := c.client.Put().
+		Resource("canaryconfigs").
+		Namespace(c.namespace).
+		Name(f.Metadata.Name).
+		Body(f).
+		Do().Into(&result)
+	if err != nil {
+		return nil, err
+	}
+	return &result, nil
+}
+
+func (c *canaryConfigClient) Delete(name string, opts *metav1.DeleteOptions) error {
+	return c.client.Delete().
+		Namespace(c.namespace).
+		Resource("canaryconfigs").
+		Name(name).
+		Body(opts).
+		Do().
+		Error()
+}
+
+func (c *canaryConfigClient) List(opts metav1.ListOptions) (*CanaryConfigList, error) {
+	var result CanaryConfigList
+	err := c.client.Get().
+		Namespace(c.namespace).
+		Resource("canaryconfigs").
+		VersionedParams(&opts, scheme.ParameterCodec).
+		Do().
+		Into(&result)
+	if err != nil {
+		return nil, err
+	}
+	return &result, nil
+}
+
+func (c *canaryConfigClient) Watch(opts metav1.ListOptions) (watch.Interface, error) {
+	return c.client.Get().
+		Prefix("watch").
+		Namespace(c.namespace).
+		Resource("canaryconfigs").
+		VersionedParams(&opts, scheme.ParameterCodec).
+		Watch()
+}

crd/client.go

@@ -160,6 +160,13 @@ func configureClient(config *rest.Config) {
 				&metav1.ListOptions{},
 				&metav1.DeleteOptions{},
 			)
+			scheme.AddKnownTypes(
+				groupversion,
+				&CanaryConfig{},
+				&CanaryConfigList{},
+				&metav1.ListOptions{},
+				&metav1.DeleteOptions{},
+			)
 			return nil
 		})
 	schemeBuilder.AddToScheme(scheme.Scheme)
@@ -221,6 +228,9 @@ func (fc *FissionClient) Recorders(ns string) RecorderInterface {
 func (fc *FissionClient) Packages(ns string) PackageInterface {
 	return MakePackageInterface(fc.crdClient, ns)
 }
+func (fc *FissionClient) CanaryConfigs(ns string) CanaryConfigInterface {
+	return MakeCanaryConfigInterface(fc.crdClient, ns)
+}
 func (fc *FissionClient) WaitForCRDs() error {
 	return waitForCRDs(fc.crdClient)
 }

crd/crd.go

@@ -189,6 +189,22 @@ func EnsureFissionCRDs(clientset *apiextensionsclient.Clientset) error {
 				},
 			},
 		},
+		// CanaryConfig: configuration for canary deployment of functions
+		{
+			ObjectMeta: metav1.ObjectMeta{
+				Name: "canaryconfigs.fission.io",
+			},
+			Spec: apiextensionsv1beta1.CustomResourceDefinitionSpec{
+				Group:   crdGroupName,
+				Version: crdVersion,
+				Scope:   apiextensionsv1beta1.NamespaceScoped,
+				Names: apiextensionsv1beta1.CustomResourceDefinitionNames{
+					Kind:     "CanaryConfig",
+					Plural:   "canaryconfigs",
+					Singular: "canaryconfig",
+				},
+			},
+		},
 	}
 	for _, crd := range crds {
 		err := ensureCRD(clientset, &crd)

crd/types.go

@@ -37,4 +37,6 @@ type (
 	MessageQueueTriggerList    = fv1.MessageQueueTriggerList
 	Recorder                   = fv1.Recorder
 	RecorderList               = fv1.RecorderList
+	CanaryConfig               = fv1.CanaryConfig
+	CanaryConfigList           = fv1.CanaryConfigList
 )