mirror of https://github.com/knative/func.git
87 lines
2.0 KiB
Go
87 lines
2.0 KiB
Go
package buildpacks
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import (
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"bytes"
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"context"
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"errors"
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"fmt"
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"io"
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"os"
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"github.com/buildpacks/pack"
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"github.com/buildpacks/pack/logging"
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bosonFunc "github.com/boson-project/func"
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)
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//Builder holds the configuration that will be passed to
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//Buildpack builder
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type Builder struct {
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Verbose bool
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}
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//NewBuilder builds the new Builder configuration
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func NewBuilder() *Builder {
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return &Builder{}
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}
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//RuntimeToBuildpack holds the mapping between the Runtime and its corresponding
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//Buildpack builder to use
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var RuntimeToBuildpack = map[string]string{
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"quarkus": "quay.io/boson/faas-quarkus-builder",
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"node": "quay.io/boson/faas-nodejs-builder",
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"go": "quay.io/boson/faas-go-builder",
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"springboot": "quay.io/boson/faas-springboot-builder",
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}
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// Build the Function at path.
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func (builder *Builder) Build(f bosonFunc.Function) (err error) {
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// Use the builder found in the Function configuration file
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// If one isn't found, use the defaults
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var packBuilder string
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if f.Builder != "" {
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packBuilder = f.Builder
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pb, ok := f.BuilderMap[packBuilder]
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if ok {
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packBuilder = pb
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}
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} else {
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packBuilder = RuntimeToBuildpack[f.Runtime]
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if packBuilder == "" {
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return errors.New(fmt.Sprint("unsupported runtime: ", f.Runtime))
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}
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}
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// Build options for the pack client.
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packOpts := pack.BuildOptions{
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AppPath: f.Root,
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Image: f.Image,
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Builder: packBuilder,
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}
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// log output is either STDOUt or kept in a buffer to be printed on error.
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var logWriter io.Writer
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if builder.Verbose {
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logWriter = os.Stdout
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} else {
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logWriter = &bytes.Buffer{}
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}
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// Client with a logger which is enabled if in Verbose mode.
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packClient, err := pack.NewClient(pack.WithLogger(logging.New(logWriter)))
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if err != nil {
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return
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}
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// Build based using the given builder.
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if err = packClient.Build(context.Background(), packOpts); err != nil {
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// If the builder was not showing logs, embed the full logs in the error.
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if !builder.Verbose {
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err = fmt.Errorf("%v\noutput: %s\n", err, logWriter.(*bytes.Buffer).String())
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}
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}
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return
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}
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