Ta-Ching ChenandSoam Vasani
e587eca08f
This change orchestrates function builds. Environments (in v2) define a builder image, just like they do a runtime image. The builder image contains a build script that's invoked with source and deployment paths (as env vars). The buildermgr watches for environments with build images defined, and creates build deployments and services. Functions can define source and deployment. Buildermgr watches for functions with source code (and build status == pending) and invokes the environment's builder when appropriate. It captures logs from the build and sets the build status (success/failure) and build lots into the PackageStatus.
478 lines
13 KiB
Go
478 lines
13 KiB
Go
/*
|
|
Copyright 2017 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 buildermgr
|
|
|
|
import (
|
|
"fmt"
|
|
"log"
|
|
"os"
|
|
"time"
|
|
|
|
"k8s.io/client-go/1.5/kubernetes"
|
|
"k8s.io/client-go/1.5/pkg/api"
|
|
"k8s.io/client-go/1.5/pkg/api/v1"
|
|
"k8s.io/client-go/1.5/pkg/apis/extensions/v1beta1"
|
|
"k8s.io/client-go/1.5/pkg/labels"
|
|
"k8s.io/client-go/1.5/pkg/util/intstr"
|
|
"k8s.io/client-go/1.5/pkg/watch"
|
|
|
|
"github.com/fission/fission/tpr"
|
|
)
|
|
|
|
type requestType int
|
|
|
|
const (
|
|
GET_BUILDER requestType = iota
|
|
CLEANUP_BUILDERS
|
|
|
|
LABEL_ENV_NAME = "envName"
|
|
LABEL_ENV_RESOURCEVERSION = "envResourceVersion"
|
|
)
|
|
|
|
type (
|
|
builderInfo struct {
|
|
envMetadata *api.ObjectMeta
|
|
deployment *v1beta1.Deployment
|
|
service *v1.Service
|
|
}
|
|
|
|
envwRequest struct {
|
|
requestType
|
|
env *tpr.Environment
|
|
envList []tpr.Environment
|
|
respChan chan envwResponse
|
|
}
|
|
|
|
envwResponse struct {
|
|
builderInfo *builderInfo
|
|
err error
|
|
}
|
|
|
|
environmentWatcher struct {
|
|
cache map[string]*builderInfo
|
|
requestChan chan envwRequest
|
|
builderNamespace string
|
|
fissionClient *tpr.FissionClient
|
|
kubernetesClient *kubernetes.Clientset
|
|
fetcherImage string
|
|
fetcherImagePullPolicy v1.PullPolicy
|
|
}
|
|
)
|
|
|
|
func makeEnvironmentWatcher(fissionClient *tpr.FissionClient,
|
|
kubernetesClient *kubernetes.Clientset, builderNamespace string) *environmentWatcher {
|
|
|
|
fetcherImage := os.Getenv("FETCHER_IMAGE")
|
|
if len(fetcherImage) == 0 {
|
|
fetcherImage = "fission/fetcher"
|
|
}
|
|
|
|
fetcherImagePullPolicy := os.Getenv("FETCHER_IMAGE_PULL_POLICY")
|
|
if len(fetcherImagePullPolicy) == 0 {
|
|
fetcherImagePullPolicy = "IfNotPresent"
|
|
}
|
|
|
|
var pullPolicy v1.PullPolicy
|
|
switch fetcherImagePullPolicy {
|
|
case "Always":
|
|
pullPolicy = v1.PullAlways
|
|
case "Never":
|
|
pullPolicy = v1.PullNever
|
|
default:
|
|
pullPolicy = v1.PullIfNotPresent
|
|
}
|
|
|
|
envWatcher := &environmentWatcher{
|
|
cache: make(map[string]*builderInfo),
|
|
requestChan: make(chan envwRequest),
|
|
builderNamespace: builderNamespace,
|
|
fissionClient: fissionClient,
|
|
kubernetesClient: kubernetesClient,
|
|
fetcherImage: fetcherImage,
|
|
fetcherImagePullPolicy: pullPolicy,
|
|
}
|
|
|
|
go envWatcher.service()
|
|
|
|
return envWatcher
|
|
}
|
|
|
|
func (envw *environmentWatcher) getCacheKey(envName string, envResourceVersion string) string {
|
|
return fmt.Sprintf("%v-%v", envName, envResourceVersion)
|
|
}
|
|
|
|
func (envw *environmentWatcher) getLabels(envName string, envResourceVersion string) map[string]string {
|
|
return map[string]string{
|
|
LABEL_ENV_NAME: envName,
|
|
LABEL_ENV_RESOURCEVERSION: envResourceVersion,
|
|
}
|
|
}
|
|
|
|
func (envw *environmentWatcher) watchEnvironments() {
|
|
rv := ""
|
|
for {
|
|
wi, err := envw.fissionClient.Environments(api.NamespaceAll).Watch(api.ListOptions{
|
|
ResourceVersion: rv,
|
|
})
|
|
if err != nil {
|
|
log.Fatalf("Error watching environment list: %v", err)
|
|
}
|
|
|
|
for {
|
|
ev, more := <-wi.ResultChan()
|
|
if !more {
|
|
// restart watch from last rv
|
|
break
|
|
}
|
|
if ev.Type == watch.Error {
|
|
// restart watch from the start
|
|
rv = ""
|
|
time.Sleep(time.Second)
|
|
break
|
|
}
|
|
env := ev.Object.(*tpr.Environment)
|
|
rv = env.Metadata.ResourceVersion
|
|
envw.sync()
|
|
}
|
|
}
|
|
}
|
|
|
|
func (envw *environmentWatcher) sync() {
|
|
envList, err := envw.fissionClient.Environments(api.NamespaceAll).List(api.ListOptions{})
|
|
if err != nil {
|
|
log.Fatalf("Error syncing environment TPR resources: %v", err)
|
|
}
|
|
|
|
// Create environment builders for all environments
|
|
for i := range envList.Items {
|
|
env := envList.Items[i]
|
|
|
|
if env.Spec.Version == 1 || // builder is not supported with v1 interface
|
|
len(env.Spec.Builder.Image) == 0 { // ignore env without builder image
|
|
continue
|
|
}
|
|
_, err := envw.getEnvBuilder(&env)
|
|
if err != nil {
|
|
log.Printf("Error creating builder for %v: %v", env.Metadata.Name, err)
|
|
}
|
|
}
|
|
envw.cleanupEnvBuilders(envList.Items)
|
|
}
|
|
|
|
func (envw *environmentWatcher) service() {
|
|
for {
|
|
req := <-envw.requestChan
|
|
switch req.requestType {
|
|
case GET_BUILDER:
|
|
key := envw.getCacheKey(req.env.Metadata.Name, req.env.Metadata.ResourceVersion)
|
|
builderInfo, ok := envw.cache[key]
|
|
if !ok {
|
|
builderInfo, err := envw.createBuilder(req.env)
|
|
if err != nil {
|
|
req.respChan <- envwResponse{err: err}
|
|
continue
|
|
}
|
|
envw.cache[key] = builderInfo
|
|
}
|
|
req.respChan <- envwResponse{builderInfo: builderInfo}
|
|
|
|
case CLEANUP_BUILDERS:
|
|
latestEnvList := make(map[string]*tpr.Environment)
|
|
for i := range req.envList {
|
|
env := req.envList[i]
|
|
key := envw.getCacheKey(env.Metadata.Name, env.Metadata.ResourceVersion)
|
|
latestEnvList[key] = &env
|
|
}
|
|
|
|
// If an environment is deleted when builder manager down,
|
|
// the builder belongs to the environment will be out-of-
|
|
// control (an orphan builder) since there is no record in
|
|
// cache and TPR. We need to iterate over the services &
|
|
// deployments to remove both normal and orphan builders.
|
|
|
|
svcList, err := envw.getBuilderServiceList(nil)
|
|
if err != nil {
|
|
log.Println(err.Error())
|
|
}
|
|
for _, svc := range svcList {
|
|
envName := svc.ObjectMeta.Labels[LABEL_ENV_NAME]
|
|
envResourceVersion := svc.ObjectMeta.Labels[LABEL_ENV_RESOURCEVERSION]
|
|
key := envw.getCacheKey(envName, envResourceVersion)
|
|
if _, ok := latestEnvList[key]; !ok {
|
|
err := envw.deleteBuilderService(svc.ObjectMeta.Labels)
|
|
if err != nil {
|
|
log.Printf("Error removing builder service: %v", err)
|
|
}
|
|
}
|
|
delete(envw.cache, svc.ObjectMeta.Name)
|
|
}
|
|
|
|
deployList, err := envw.getBuilderDeploymentList(nil)
|
|
if err != nil {
|
|
log.Printf(err.Error())
|
|
}
|
|
for _, deploy := range deployList {
|
|
envName := deploy.ObjectMeta.Labels[LABEL_ENV_NAME]
|
|
envResourceVersion := deploy.ObjectMeta.Labels[LABEL_ENV_RESOURCEVERSION]
|
|
key := envw.getCacheKey(envName, envResourceVersion)
|
|
if _, ok := latestEnvList[key]; !ok {
|
|
err := envw.deleteBuilderDeployment(deploy.ObjectMeta.Labels)
|
|
if err != nil {
|
|
log.Printf("Error removing builder deployment: %v", err)
|
|
}
|
|
}
|
|
delete(envw.cache, deploy.ObjectMeta.Name)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func (envw *environmentWatcher) getEnvBuilder(env *tpr.Environment) (*builderInfo, error) {
|
|
respChan := make(chan envwResponse)
|
|
envw.requestChan <- envwRequest{
|
|
requestType: GET_BUILDER,
|
|
env: env,
|
|
respChan: respChan,
|
|
}
|
|
resp := <-respChan
|
|
return resp.builderInfo, resp.err
|
|
}
|
|
|
|
func (envw *environmentWatcher) cleanupEnvBuilders(envs []tpr.Environment) {
|
|
envw.requestChan <- envwRequest{
|
|
requestType: CLEANUP_BUILDERS,
|
|
envList: envs,
|
|
}
|
|
}
|
|
|
|
func (envw *environmentWatcher) createBuilder(env *tpr.Environment) (*builderInfo, error) {
|
|
var svc *v1.Service
|
|
var deploy *v1beta1.Deployment
|
|
|
|
sel := envw.getLabels(env.Metadata.Name, env.Metadata.ResourceVersion)
|
|
|
|
svcList, err := envw.getBuilderServiceList(sel)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if len(svcList) == 0 {
|
|
svc, err = envw.createBuilderService(env)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("Error creating builder service: %v", err)
|
|
}
|
|
}
|
|
|
|
deployList, err := envw.getBuilderDeploymentList(sel)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if len(deployList) == 0 {
|
|
deploy, err = envw.createBuilderDeployment(env)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("Error creating builder deployment: %v", err)
|
|
}
|
|
}
|
|
|
|
return &builderInfo{
|
|
envMetadata: &env.Metadata,
|
|
service: svc,
|
|
deployment: deploy,
|
|
}, nil
|
|
}
|
|
|
|
func (envw *environmentWatcher) deleteBuilderService(sel map[string]string) error {
|
|
svcList, err := envw.getBuilderServiceList(sel)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, svc := range svcList {
|
|
log.Printf("Removing builder service: %v", svc.ObjectMeta.Name)
|
|
|
|
// cascading deletion
|
|
// https://kubernetes.io/docs/concepts/workloads/controllers/garbage-collection/
|
|
falseVal := false
|
|
delOpt := &api.DeleteOptions{
|
|
OrphanDependents: &falseVal,
|
|
}
|
|
|
|
err = envw.kubernetesClient.
|
|
Services(envw.builderNamespace).
|
|
Delete(svc.ObjectMeta.Name, delOpt)
|
|
if err != nil {
|
|
return fmt.Errorf("Error deleting builder service: %v", err)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (envw *environmentWatcher) deleteBuilderDeployment(sel map[string]string) error {
|
|
deployList, err := envw.getBuilderDeploymentList(sel)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, deploy := range deployList {
|
|
log.Printf("Removing builder deployment: %v", deploy.ObjectMeta.Name)
|
|
|
|
falseVal := false
|
|
delOpt := &api.DeleteOptions{
|
|
OrphanDependents: &falseVal,
|
|
}
|
|
|
|
err = envw.kubernetesClient.
|
|
Deployments(envw.builderNamespace).
|
|
Delete(deploy.ObjectMeta.Name, delOpt)
|
|
if err != nil {
|
|
return fmt.Errorf("Error deleteing builder deployment: %v", err)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (envw *environmentWatcher) getBuilderServiceList(sel map[string]string) ([]v1.Service, error) {
|
|
svcList, err := envw.kubernetesClient.Services(envw.builderNamespace).List(
|
|
api.ListOptions{
|
|
LabelSelector: labels.Set(sel).AsSelector(),
|
|
})
|
|
if err != nil {
|
|
return nil, fmt.Errorf("Error getting builder service list: %v", err)
|
|
}
|
|
return svcList.Items, nil
|
|
}
|
|
|
|
func (envw *environmentWatcher) createBuilderService(env *tpr.Environment) (*v1.Service, error) {
|
|
name := envw.getCacheKey(env.Metadata.Name, env.Metadata.ResourceVersion)
|
|
sel := envw.getLabels(env.Metadata.Name, env.Metadata.ResourceVersion)
|
|
service := v1.Service{
|
|
ObjectMeta: v1.ObjectMeta{
|
|
Namespace: envw.builderNamespace,
|
|
Name: name,
|
|
Labels: sel,
|
|
},
|
|
Spec: v1.ServiceSpec{
|
|
Selector: sel,
|
|
Type: v1.ServiceTypeClusterIP,
|
|
Ports: []v1.ServicePort{
|
|
{
|
|
Name: "fetcher-port",
|
|
Protocol: v1.ProtocolTCP,
|
|
Port: 8000,
|
|
TargetPort: intstr.IntOrString{
|
|
Type: intstr.Int,
|
|
IntVal: 8000,
|
|
},
|
|
},
|
|
{
|
|
Name: "builder-port",
|
|
Protocol: v1.ProtocolTCP,
|
|
Port: 8001,
|
|
TargetPort: intstr.IntOrString{
|
|
Type: intstr.Int,
|
|
IntVal: 8001,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
log.Printf("Creating builder service: %v", name)
|
|
_, err := envw.kubernetesClient.Services(envw.builderNamespace).Create(&service)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &service, nil
|
|
}
|
|
|
|
func (envw *environmentWatcher) getBuilderDeploymentList(sel map[string]string) ([]v1beta1.Deployment, error) {
|
|
deployList, err := envw.kubernetesClient.Deployments(envw.builderNamespace).List(
|
|
api.ListOptions{
|
|
LabelSelector: labels.Set(sel).AsSelector(),
|
|
})
|
|
if err != nil {
|
|
return nil, fmt.Errorf("Error getting builder deployment list: %v", err)
|
|
}
|
|
return deployList.Items, nil
|
|
}
|
|
|
|
func (envw *environmentWatcher) createBuilderDeployment(env *tpr.Environment) (*v1beta1.Deployment, error) {
|
|
sharedMountPath := "/package"
|
|
name := envw.getCacheKey(env.Metadata.Name, env.Metadata.ResourceVersion)
|
|
sel := envw.getLabels(env.Metadata.Name, env.Metadata.ResourceVersion)
|
|
var replicas int32 = 1
|
|
deployment := &v1beta1.Deployment{
|
|
ObjectMeta: v1.ObjectMeta{
|
|
Namespace: envw.builderNamespace,
|
|
Name: name,
|
|
Labels: sel,
|
|
},
|
|
Spec: v1beta1.DeploymentSpec{
|
|
Replicas: &replicas,
|
|
Selector: &v1beta1.LabelSelector{
|
|
MatchLabels: sel,
|
|
},
|
|
Template: v1.PodTemplateSpec{
|
|
ObjectMeta: v1.ObjectMeta{
|
|
Labels: sel,
|
|
},
|
|
Spec: v1.PodSpec{
|
|
Volumes: []v1.Volume{
|
|
{
|
|
Name: "package",
|
|
VolumeSource: v1.VolumeSource{
|
|
EmptyDir: &v1.EmptyDirVolumeSource{},
|
|
},
|
|
},
|
|
},
|
|
Containers: []v1.Container{
|
|
{
|
|
Name: "builder",
|
|
Image: env.Spec.Builder.Image,
|
|
ImagePullPolicy: v1.PullAlways,
|
|
TerminationMessagePath: "/dev/termination-log",
|
|
VolumeMounts: []v1.VolumeMount{
|
|
{
|
|
Name: "package",
|
|
MountPath: sharedMountPath,
|
|
},
|
|
},
|
|
Command: []string{"/builder", sharedMountPath},
|
|
},
|
|
{
|
|
Name: "fetcher",
|
|
Image: envw.fetcherImage,
|
|
ImagePullPolicy: envw.fetcherImagePullPolicy,
|
|
TerminationMessagePath: "/dev/termination-log",
|
|
VolumeMounts: []v1.VolumeMount{
|
|
{
|
|
Name: "package",
|
|
MountPath: sharedMountPath,
|
|
},
|
|
},
|
|
Command: []string{"/fetcher", sharedMountPath},
|
|
},
|
|
},
|
|
ServiceAccountName: "fission-builder",
|
|
},
|
|
},
|
|
},
|
|
}
|
|
log.Printf("Creating builder deployment: %v", envw.getCacheKey(env.Metadata.Name, env.Metadata.ResourceVersion))
|
|
_, err := envw.kubernetesClient.Deployments(envw.builderNamespace).Create(deployment)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return deployment, nil
|
|
}
|