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build.go
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build.go
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/*
* Copyright 2018-2020 the original author or 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
*
* https://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 build
import (
"github.com/buildpack/libbuildpack/build"
bp "github.com/buildpack/libbuildpack/layers"
"github.com/cloudfoundry/libcfbuildpack/buildpack"
"github.com/cloudfoundry/libcfbuildpack/buildpackplan"
"github.com/cloudfoundry/libcfbuildpack/layers"
"github.com/cloudfoundry/libcfbuildpack/logger"
"github.com/cloudfoundry/libcfbuildpack/runner"
"github.com/cloudfoundry/libcfbuildpack/services"
)
// Build is an extension to libbuildpack.Build that allows additional functionality to be added.
type Build struct {
build.Build
// Buildpack represents the metadata associated with a buildpack.
Buildpack buildpack.Buildpack
// Layers represents the launch layers contributed by a buildpack.
Layers layers.Layers
// Logger is used to write debug and info to the console.
Logger logger.Logger
// Plans represents required contributions.
Plans buildpackplan.Plans
// Runner is used to run commands outside of the process.
Runner runner.Runner
// Services represents the services bound to the application.
Services services.Services
}
// Success signals a successful build by exiting with a zero status code. Combines specied build plan with build
// plan entries for all contributed dependencies.
func (b Build) Success(plans ...buildpackplan.Plan) (int, error) {
code, err := b.Build.Success(append(b.Layers.Plans.Entries, plans...)...)
if err != nil {
return code, err
}
if err := b.Layers.TouchedLayers.Cleanup(); err != nil {
return -1, err
}
return code, nil
}
// DefaultBuild creates a new instance of Build using default values. During initialization, all platform environment
// // variables are set in the current process environment.
func DefaultBuild() (Build, error) {
b, err := build.DefaultBuild()
if err != nil {
return Build{}, err
}
logger := logger.Logger{Logger: b.Logger}
buildpack := buildpack.NewBuildpack(b.Buildpack, logger)
layers := layers.NewLayers(b.Layers, bp.NewLayers(buildpack.CacheRoot, b.Logger), buildpack, logger)
plans := buildpackplan.Plans{Plans: b.Plans}
services := services.Services{Services: b.Services}
return Build{
b,
buildpack,
layers,
logger,
plans,
runner.CommandRunner{},
services,
}, nil
}