github.com/paketo-buildpacks/libpak@v1.70.0/detect.go (about) 1 /* 2 * Copyright 2018-2020 the original author or authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * https://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package libpak 18 19 import ( 20 "github.com/buildpacks/libcnb" 21 22 "github.com/paketo-buildpacks/libpak/bard" 23 "github.com/paketo-buildpacks/libpak/internal" 24 ) 25 26 // Detect is called by the main function of a buildpack, for detection. 27 func Detect(detector libcnb.Detector, options ...libcnb.Option) { 28 libcnb.Detect(detectDelegate{delegate: detector}, 29 append([]libcnb.Option{ 30 libcnb.WithExitHandler(internal.NewExitHandler()), 31 libcnb.WithTOMLWriter(internal.NewTOMLWriter()), 32 }, options...)..., 33 ) 34 } 35 36 type detectDelegate struct { 37 delegate libcnb.Detector 38 } 39 40 func (d detectDelegate) Detect(context libcnb.DetectContext) (libcnb.DetectResult, error) { 41 result, err := d.delegate.Detect(context) 42 if err != nil { 43 err = bard.IdentifiableError{ 44 Name: context.Buildpack.Info.Name, 45 Description: context.Buildpack.Info.Version, 46 Err: err, 47 } 48 } 49 50 return result, err 51 }