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aggregate_store.go
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aggregate_store.go
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package workload
import (
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"strconv"
"strings"
"github.com/docker/distribution/reference"
"github.com/rancher/norman/api/access"
"github.com/rancher/norman/httperror"
"github.com/rancher/norman/types"
"github.com/rancher/norman/types/convert"
"github.com/rancher/norman/types/values"
managementschema "github.com/rancher/types/apis/management.cattle.io/v3/schema"
projectschema "github.com/rancher/types/apis/project.cattle.io/v3/schema"
managementv3 "github.com/rancher/types/client/management/v3"
"github.com/rancher/types/client/project/v3"
projectclient "github.com/rancher/types/client/project/v3"
"github.com/rancher/types/config"
"github.com/sirupsen/logrus"
"golang.org/x/sync/errgroup"
corev1 "k8s.io/api/core/v1"
)
const (
SelectorLabel = "workload.user.cattle.io/workloadselector"
)
type AggregateStore struct {
Stores map[string]types.Store
Schemas map[string]*types.Schema
FieldToSchemaID map[string]string
}
func NewAggregateStore(schemas ...*types.Schema) *AggregateStore {
a := &AggregateStore{
Stores: map[string]types.Store{},
Schemas: map[string]*types.Schema{},
FieldToSchemaID: map[string]string{},
}
for _, schema := range schemas {
a.Schemas[strings.ToLower(schema.ID)] = schema
a.Stores[strings.ToLower(schema.ID)] = schema.Store
fieldKey := fmt.Sprintf("%sConfig", schema.ID)
a.FieldToSchemaID[fieldKey] = strings.ToLower(schema.ID)
}
return a
}
func (a *AggregateStore) Context() types.StorageContext {
return config.UserStorageContext
}
func (a *AggregateStore) ByID(apiContext *types.APIContext, schema *types.Schema, id string) (map[string]interface{}, error) {
store, schemaType, err := a.getStore(id)
if err != nil {
return nil, err
}
_, shortID := splitTypeAndID(id)
return store.ByID(apiContext, a.Schemas[schemaType], shortID)
}
func (a *AggregateStore) Watch(apiContext *types.APIContext, schema *types.Schema, opt *types.QueryOptions) (chan map[string]interface{}, error) {
readerGroup, ctx := errgroup.WithContext(apiContext.Request.Context())
apiContext.Request = apiContext.Request.WithContext(ctx)
events := make(chan map[string]interface{})
for _, schema := range a.Schemas {
streamStore(readerGroup, apiContext, schema, opt, events)
}
go func() {
readerGroup.Wait()
close(events)
}()
return events, nil
}
func (a *AggregateStore) List(apiContext *types.APIContext, schema *types.Schema, opt *types.QueryOptions) ([]map[string]interface{}, error) {
items := make(chan map[string]interface{})
g, ctx := errgroup.WithContext(apiContext.Request.Context())
submit := func(schema *types.Schema, store types.Store) {
g.Go(func() error {
data, err := store.List(apiContext, schema, opt)
if err != nil {
return err
}
for _, item := range data {
select {
case items <- item:
case <-ctx.Done():
return ctx.Err()
}
}
return nil
})
}
for typeName, store := range a.Stores {
submit(a.Schemas[typeName], store)
}
go func() {
g.Wait()
close(items)
}()
var result []map[string]interface{}
for item := range items {
result = append(result, item)
}
return result, g.Wait()
}
func (a *AggregateStore) Create(apiContext *types.APIContext, schema *types.Schema, data map[string]interface{}) (map[string]interface{}, error) {
// deployment is default if otherwise is not specified
kind := client.DeploymentType
toSchema := a.Schemas[kind]
toStore := a.Stores[kind]
for field, schemaID := range a.FieldToSchemaID {
if val, ok := data[field]; ok && val != nil {
toSchema = a.Schemas[schemaID]
toStore = a.Stores[schemaID]
break
}
}
setSelector(toSchema.ID, data)
setWorkloadSpecificDefaults(toSchema.ID, data)
setSecrets(apiContext, data)
setPorts(data)
setScheduling(apiContext, data)
return toStore.Create(apiContext, toSchema, data)
}
func setSelector(schemaID string, data map[string]interface{}) {
setSelector := false
isJob := strings.EqualFold(schemaID, "job") || strings.EqualFold(schemaID, "cronJob")
if convert.IsEmpty(data["selector"]) && !isJob {
setSelector = true
}
if setSelector {
workloadID := resolveWorkloadID(schemaID, data)
// set selector
data["selector"] = map[string]interface{}{
"matchLabels": map[string]interface{}{
SelectorLabel: workloadID,
},
}
// set workload labels
workloadLabels := convert.ToMapInterface(data["workloadLabels"])
if workloadLabels == nil {
workloadLabels = make(map[string]interface{})
}
workloadLabels[SelectorLabel] = workloadID
data["workloadLabels"] = workloadLabels
// set labels
labels := convert.ToMapInterface(data["labels"])
if labels == nil {
labels = make(map[string]interface{})
}
labels[SelectorLabel] = workloadID
data["labels"] = labels
}
}
func setWorkloadSpecificDefaults(schemaID string, data map[string]interface{}) {
if strings.EqualFold(schemaID, "job") || strings.EqualFold(schemaID, "cronJob") {
// job has different defaults
if _, ok := data["restartPolicy"]; !ok {
data["restartPolicy"] = "OnFailure"
}
}
}
func store(registries map[string]projectclient.RegistryCredential, domainToCreds map[string][]corev1.LocalObjectReference, name string) {
for registry := range registries {
secretRef := corev1.LocalObjectReference{Name: name}
if _, ok := domainToCreds[registry]; ok {
domainToCreds[registry] = append(domainToCreds[registry], secretRef)
} else {
domainToCreds[registry] = []corev1.LocalObjectReference{secretRef}
}
}
}
func setPorts(data map[string]interface{}) {
containers, ok := values.GetValue(data, "containers")
if !ok {
return
}
for _, c := range convert.ToInterfaceSlice(containers) {
cMap, err := convert.EncodeToMap(c)
if err != nil {
logrus.Warnf("Failed to transform container to map: %v", err)
continue
}
v, ok := values.GetValue(cMap, "ports")
if ok {
ports := convert.ToInterfaceSlice(v)
for _, p := range ports {
port, err := convert.EncodeToMap(p)
if err != nil {
logrus.Warnf("Failed to transform port to map %v", err)
continue
}
if convert.IsEmpty(port["name"]) {
containerPort, err := convert.ToNumber(port["containerPort"])
if err != nil {
logrus.Warnf("Failed to transform container port [%v] to number: %v", port["containerPort"], err)
}
port["name"] = fmt.Sprintf("%s%s", strings.ToLower(convert.ToString(port["protocol"])), strconv.Itoa(int(containerPort)))
}
}
}
}
}
func getCreds(apiContext *types.APIContext, namespaceID string) map[string][]corev1.LocalObjectReference {
domainToCreds := make(map[string][]corev1.LocalObjectReference)
var namespacedCreds []projectclient.NamespacedDockerCredential
if err := access.List(apiContext, &projectschema.Version, "namespacedDockerCredential", &types.QueryOptions{}, &namespacedCreds); err == nil {
for _, cred := range namespacedCreds {
if cred.NamespaceId == namespaceID {
store(cred.Registries, domainToCreds, cred.Name)
}
}
}
var creds []projectclient.DockerCredential
if err := access.List(apiContext, &projectschema.Version, "dockerCredential", &types.QueryOptions{}, &creds); err == nil {
for _, cred := range creds {
store(cred.Registries, domainToCreds, cred.Name)
}
}
return domainToCreds
}
func setSecrets(apiContext *types.APIContext, data map[string]interface{}) {
if val, _ := values.GetValue(data, "imagePullSecrets"); val != nil {
return
}
if containers, _ := values.GetSlice(data, "containers"); len(containers) > 0 {
imagePullSecrets, _ := data["imagePullSecrets"].([]corev1.LocalObjectReference)
domainToCreds := getCreds(apiContext, convert.ToString(data["namespaceId"]))
for _, container := range containers {
if image := convert.ToString(container["image"]); image != "" {
domain := getDomain(image)
if secrets, ok := domainToCreds[domain]; ok {
imagePullSecrets = append(imagePullSecrets, secrets...)
}
}
}
if imagePullSecrets != nil {
values.PutValue(data, imagePullSecrets, "imagePullSecrets")
}
}
}
func setScheduling(apiContext *types.APIContext, data map[string]interface{}) {
if nodeID := convert.ToString(values.GetValueN(data, "scheduling", "node", "nodeId")); nodeID != "" {
nodeName := getNodeName(apiContext, nodeID)
values.PutValue(data, nodeName, "scheduling", "node", "nodeId")
state := getState(data)
state[getKey(nodeName)] = nodeID
setState(data, state)
}
}
func getNodeName(apiContext *types.APIContext, nodeID string) string {
var node managementv3.Node
var nodeName string
if err := access.ByID(apiContext, &managementschema.Version, managementv3.NodeType, nodeID, &node); err == nil {
nodeName = node.NodeName
}
return nodeName
}
func resolveWorkloadID(schemaID string, data map[string]interface{}) string {
return fmt.Sprintf("%s-%s-%s", schemaID, data["namespaceId"], data["name"])
}
func (a *AggregateStore) Update(apiContext *types.APIContext, schema *types.Schema, data map[string]interface{}, id string) (map[string]interface{}, error) {
store, schemaType, err := a.getStore(id)
if err != nil {
return nil, err
}
_, shortID := splitTypeAndID(id)
setPorts(data)
return store.Update(apiContext, a.Schemas[schemaType], data, shortID)
}
func (a *AggregateStore) Delete(apiContext *types.APIContext, schema *types.Schema, id string) (map[string]interface{}, error) {
store, schemaType, err := a.getStore(id)
if err != nil {
return nil, err
}
_, shortID := splitTypeAndID(id)
return store.Delete(apiContext, a.Schemas[schemaType], shortID)
}
func (a *AggregateStore) getStore(id string) (types.Store, string, error) {
typeName, _ := splitTypeAndID(id)
store, ok := a.Stores[typeName]
if !ok {
return nil, "", httperror.NewAPIError(httperror.NotFound, "failed to find type "+typeName)
}
return store, typeName, nil
}
func streamStore(eg *errgroup.Group, apiContext *types.APIContext, schema *types.Schema, opt *types.QueryOptions, result chan map[string]interface{}) {
eg.Go(func() error {
events, err := schema.Store.Watch(apiContext, schema, opt)
if err != nil || events == nil {
if err != nil {
logrus.Errorf("failed on subscribe %s: %v", schema.ID, err)
}
return err
}
logrus.Debugf("watching %s", schema.ID)
for e := range events {
result <- e
}
return errors.New("disconnect")
})
}
func splitTypeAndID(id string) (string, string) {
parts := strings.SplitN(id, ":", 2)
if len(parts) < 2 {
// Must conform
return "", ""
}
return parts[0], parts[1]
}
func getDomain(image string) string {
var repo string
named, err := reference.ParseNormalizedNamed(image)
if err != nil {
logrus.Debug(err)
return repo
}
domain := reference.Domain(named)
if domain == "docker.io" {
return "index.docker.io"
}
return domain
}
func setState(data map[string]interface{}, stateMap map[string]string) {
content, err := json.Marshal(stateMap)
if err != nil {
logrus.Errorf("failed to save state on workload: %v", data["id"])
return
}
values.PutValue(data, string(content), "annotations", "workload.cattle.io/state")
}
func getState(data map[string]interface{}) map[string]string {
state := map[string]string{}
v, ok := values.GetValue(data, "annotations", "workload.cattle.io/state")
if ok {
json.Unmarshal([]byte(convert.ToString(v)), &state)
}
return state
}
func getKey(key string) string {
return base64.URLEncoding.EncodeToString([]byte(key))
}