github.com/paketoio/libpak@v1.3.1/sherpa/sherpa.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 sherpa 18 19 import ( 20 "github.com/paketoio/libpak/internal" 21 ) 22 23 // ExecuteFunc is the callback function for buildpack helper application implementations. 24 type ExecuteFunc func() error 25 26 // Execute is called by the main function of a buildpack helper application, for execution. 27 func Execute(f ExecuteFunc, options ...Option) { 28 config := Config{ 29 exitHandler: internal.NewExitHandler(), 30 } 31 32 for _, option := range options { 33 config = option(config) 34 } 35 36 if err := f(); err != nil { 37 config.exitHandler.Error(err) 38 return 39 } 40 }