/
nodejs.go
63 lines (58 loc) · 1.69 KB
/
nodejs.go
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package buildpack
import (
"context"
"fmt"
"github.com/yourbase/yb"
"github.com/yourbase/yb/internal/biome"
"zombiezen.com/go/log"
)
func installNode(ctx context.Context, sys Sys, spec yb.BuildpackSpec) (biome.Environment, error) {
biomeDirs := sys.Biome.Dirs()
nodeDir := sys.Biome.JoinPath(biomeDirs.Tools, "nodejs", "node-"+spec.Version())
env := biome.Environment{
Vars: map[string]string{
// TODO: Fix this to be the package cache?
"NODE_PATH": biomeDirs.Package,
},
PrependPath: []string{
sys.Biome.JoinPath(biomeDirs.Package, "node_modules", ".bin"),
sys.Biome.JoinPath(nodeDir, "bin"),
},
}
// If directory already exists, then use it.
if _, err := biome.EvalSymlinks(ctx, sys.Biome, nodeDir); err == nil {
log.Infof(ctx, "Node v%s located in %s", spec.Version(), nodeDir)
return env, nil
}
log.Infof(ctx, "Installing Node v%s in %s", spec.Version(), nodeDir)
const template = "https://nodejs.org/dist/v{{.Version}}/node-v{{.Version}}-{{.OS}}-{{.Arch}}.tar.gz"
desc := sys.Biome.Describe()
data := struct {
Version string
OS string
Arch string
}{
spec.Version(),
map[string]string{
biome.Linux: "linux",
biome.MacOS: "darwin",
}[desc.OS],
map[string]string{
biome.Intel64: "x64",
}[desc.Arch],
}
if data.OS == "" {
return biome.Environment{}, fmt.Errorf("unsupported os %s", desc.OS)
}
if data.Arch == "" {
return biome.Environment{}, fmt.Errorf("unsupported architecture %s", desc.Arch)
}
downloadURL, err := templateToString(template, data)
if err != nil {
return biome.Environment{}, err
}
if err := extract(ctx, sys, nodeDir, downloadURL, stripTopDirectory); err != nil {
return biome.Environment{}, err
}
return env, nil
}