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validate.go
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validate.go
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package validate
import (
"context"
"fmt"
"net/http"
"reflect"
"sync"
"github.com/blang/semver/v4"
"github.com/kong/deck/state"
"github.com/kong/deck/utils"
"github.com/kong/go-kong/kong"
)
type Validator struct {
ctx context.Context
state *state.KongState
client *kong.Client
parallelism int
rbacResourcesOnly bool
}
type ValidatorOpts struct {
Ctx context.Context
State *state.KongState
Client *kong.Client
Parallelism int
RBACResourcesOnly bool
}
func NewValidator(opt ValidatorOpts) *Validator {
return &Validator{
ctx: opt.Ctx,
state: opt.State,
client: opt.Client,
parallelism: opt.Parallelism,
rbacResourcesOnly: opt.RBACResourcesOnly,
}
}
type ErrorsWrapper struct {
Errors []error
}
func (v ErrorsWrapper) Error() string {
var errStr string
for _, e := range v.Errors {
errStr += e.Error()
if e != v.Errors[len(v.Errors)-1] {
errStr += "\n"
}
}
return errStr
}
func getEntityNameOrID(entity interface{}) string {
value := reflect.ValueOf(entity).Elem()
nameOrID := value.FieldByName("Name")
if !nameOrID.IsValid() {
nameOrID = value.FieldByName("ID")
}
return nameOrID.Elem().String()
}
func (v *Validator) validateEntity(entityType string, entity interface{}) (bool, error) {
nameOrID := getEntityNameOrID(entity)
errWrap := "validate entity '%s (%s)': %s"
endpoint := fmt.Sprintf("/schemas/%s/validate", entityType)
req, err := v.client.NewRequest(http.MethodPost, endpoint, nil, entity)
if err != nil {
return false, fmt.Errorf(errWrap, entityType, nameOrID, err)
}
resp, err := v.client.Do(v.ctx, req, nil)
if err != nil {
return false, fmt.Errorf(errWrap, entityType, nameOrID, err)
}
return resp.StatusCode == http.StatusOK, nil
}
func (v *Validator) entities(obj interface{}, entityType string) []error {
entities, err := utils.CallGetAll(obj)
if err != nil {
return []error{err}
}
errors := []error{}
// create a buffer of channels. Creation of new coroutines
// are allowed only if the buffer is not full.
chanBuff := make(chan struct{}, v.parallelism)
var wg sync.WaitGroup
wg.Add(entities.Len())
// each coroutine will append on a slice of errors.
// since slices are not thread-safe, let's add a mutex
// to handle access to the slice.
mu := &sync.Mutex{}
for i := 0; i < entities.Len(); i++ {
// reserve a slot
chanBuff <- struct{}{}
go func(i int) {
defer wg.Done()
// release a slot when completed
defer func() { <-chanBuff }()
_, err := v.validateEntity(entityType, entities.Index(i).Interface())
if err != nil {
mu.Lock()
errors = append(errors, err)
mu.Unlock()
}
}(i)
}
wg.Wait()
return errors
}
func (v *Validator) Validate(kongVersion semver.Version) []error {
allErr := []error{}
// validate RBAC resources first.
if err := v.entities(v.state.RBACEndpointPermissions, "rbac-endpointpermission"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.RBACRoles, "rbac-role"); err != nil {
allErr = append(allErr, err...)
}
if v.rbacResourcesOnly {
return allErr
}
if err := v.entities(v.state.Services, "services"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.ACLGroups, "acls"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.BasicAuths, "basicauth_credentials"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.CACertificates, "ca_certificates"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.Certificates, "certificates"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.Consumers, "consumers"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.Documents, "documents"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.HMACAuths, "hmacauth_credentials"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.JWTAuths, "jwt_secrets"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.KeyAuths, "keyauth_credentials"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.Oauth2Creds, "oauth2_credentials"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.Plugins, "plugins"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.Routes, "routes"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.SNIs, "snis"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.Targets, "targets"); err != nil {
allErr = append(allErr, err...)
}
if err := v.entities(v.state.Upstreams, "upstreams"); err != nil {
allErr = append(allErr, err...)
}
// validate routes format with Kong 3.x
if utils.Kong300Version.LTE(kongVersion) {
validate3xRoutes(v.state.Routes)
}
return allErr
}
func validate3xRoutes(routes *state.RoutesCollection) {
results, _ := routes.GetAll()
unsupportedRoutes := []string{}
for _, r := range results {
if utils.HasPathsWithRegex300AndAbove(r.Route) {
unsupportedRoutes = append(unsupportedRoutes, *r.Route.ID)
}
}
if len(unsupportedRoutes) > 0 {
utils.PrintRouteRegexWarning()
}
}