| /* |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You 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 bindings |
| |
| import ( |
| "errors" |
| "sort" |
| |
| "github.com/apache/camel-k/pkg/apis/camel/v1alpha1" |
| "github.com/apache/camel-k/pkg/platform" |
| ) |
| |
| var bindingProviders []BindingProvider |
| |
| // RegisterBindingProvider --. |
| func RegisterBindingProvider(bp BindingProvider) { |
| bindingProviders = append(bindingProviders, bp) |
| sort.Slice(bindingProviders, func(i, j int) bool { |
| bi := bindingProviders[i] |
| bj := bindingProviders[j] |
| return (bi.Order() < bj.Order()) || |
| (bi.Order() == bj.Order() && bi.ID() < bj.ID()) |
| }) |
| } |
| |
| // Translate execute all chained binding providers, returning the first success or the first error. |
| func Translate(ctx BindingContext, endpointCtx EndpointContext, endpoint v1alpha1.Endpoint) (*Binding, error) { |
| if err := validateEndpoint(ctx, endpoint); err != nil { |
| return nil, err |
| } |
| |
| for _, bp := range bindingProviders { |
| b, err := bp.Translate(ctx, endpointCtx, endpoint) |
| if b != nil || err != nil { |
| return b, err |
| } |
| } |
| return nil, nil |
| } |
| |
| func validateEndpoint(ctx BindingContext, e v1alpha1.Endpoint) error { |
| if e.Ref == nil && e.URI == nil { |
| return errors.New("no ref or URI specified in endpoint") |
| } else if e.Ref != nil && e.URI != nil { |
| return errors.New("cannot use both ref and URI to specify an endpoint: only one of them should be used") |
| } |
| if e.Ref != nil && e.Ref.Namespace != "" && e.Ref.Namespace != ctx.Namespace { |
| // referencing default Kamelets in operator namespace is allowed |
| if e.Ref.Kind == v1alpha1.KameletKind && e.Ref.Namespace == platform.GetOperatorNamespace() { |
| return nil |
| } |
| |
| return errors.New("cross-namespace references are not allowed in KameletBinding") |
| } |
| return nil |
| } |