| //go:build !agent |
| // +build !agent |
| |
| // Copyright Istio 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 validation |
| |
| import ( |
| "fmt" |
| ) |
| |
| import ( |
| "github.com/google/cel-go/cel" |
| telemetry "istio.io/api/telemetry/v1alpha1" |
| ) |
| |
| func validateTelemetryFilter(filter *telemetry.AccessLogging_Filter) error { |
| expr := filter.Expression |
| env, _ := cel.NewEnv() |
| _, issue := env.Parse(expr) |
| if issue.Err() != nil { |
| return fmt.Errorf("must be a valid CEL expression, %w", issue.Err()) |
| } |
| |
| return nil |
| } |