// Fetch gets a chart from the source repo and copies to the workdir.
//
// - chart is the source
// - lname is the local name for that chart (chart-name); if blank, it is set to the chart.
// - homedir is the home directory for the user
// - ns is the namespace for this package. If blank, it is set to the DefaultNS.
func Fetch(chart, lname, homedir string) {
if lname == "" {
lname = chart
}
fetch(chart, lname, homedir)
cfile, err := model.LoadChartfile(filepath.Join(homedir, WorkspaceChartPath, chart, "Chart.yaml"))
if err != nil {
log.Die("Source is not a valid chart. Missing Chart.yaml: %s", err)
}
deps, err := dependency.Resolve(cfile, filepath.Join(homedir, WorkspaceChartPath))
if err != nil {
log.Warn("Could not check dependencies: %s", err)
return
}
if len(deps) > 0 {
log.Warn("Unsatisfied dependencies:")
for _, d := range deps {
log.Msg("\t%s %s", d.Name, d.Version)
}
}
PrintREADME(lname, homedir)
}
// Install loads a chart into Kubernetes.
//
// If the chart is not found in the workspace, it is fetched and then installed.
//
// During install, manifests are sent to Kubernetes in the following order:
//
// - Namespaces
// - Secrets
// - Volumes
// - Services
// - Pods
// - ReplicationControllers
func Install(chart, home, namespace string, force bool) {
if !chartInstalled(chart, home) {
log.Info("No installed chart named %q. Installing now.", chart)
fetch(chart, chart, home)
}
cd := filepath.Join(home, WorkspaceChartPath, chart)
c, err := model.Load(cd)
if err != nil {
log.Die("Failed to load chart: %s", err)
}
// Give user the option to bale if dependencies are not satisfied.
nope, err := dependency.Resolve(c.Chartfile, filepath.Join(home, WorkspaceChartPath))
if err != nil {
log.Warn("Failed to check dependencies: %s", err)
if !force {
log.Die("Re-run with --force to install anyway.")
}
} else if len(nope) > 0 {
log.Warn("Unsatisfied dependencies:")
for _, d := range nope {
log.Msg("\t%s %s", d.Name, d.Version)
}
if !force {
log.Die("Stopping install. Re-run with --force to install anyway.")
}
}
if err := uploadManifests(c, namespace); err != nil {
log.Die("Failed to upload manifests: %s", err)
}
PrintREADME(chart, home)
}
// PrintREADME prints the README file (if it exists) to the console.
func PrintREADME(chart, home string) {
p := filepath.Join(home, WorkspaceChartPath, chart, "README.*")
files, err := filepath.Glob(p)
if err != nil || len(files) == 0 {
// No README. Skip.
log.Debug("No readme in %s", p)
return
}
f, err := os.Open(files[0])
if err != nil {
log.Warn("Could not read README: %s", err)
return
}
log.Msg(strings.Repeat("=", 40))
io.Copy(log.Stdout, f)
log.Msg(strings.Repeat("=", 40))
f.Close()
}
func AltInstall(chart, cachedir, home, namespace string, force bool) {
// Make sure there is a chart in the cachedir.
if _, err := os.Stat(filepath.Join(cachedir, "Chart.yaml")); err != nil {
log.Die("Expected a Chart.yaml in %s: %s", cachedir, err)
}
// Make sure there is a manifests dir.
if fi, err := os.Stat(filepath.Join(cachedir, "manifests")); err != nil {
log.Die("Expected 'manifests/' in %s: %s", cachedir, err)
} else if !fi.IsDir() {
log.Die("Expected 'manifests/' to be a directory in %s: %s", cachedir, err)
}
// Copy the source chart to the workspace. We ruthlessly overwrite in
// this case.
dest := filepath.Join(home, WorkspaceChartPath, chart)
if err := copyDir(cachedir, dest); err != nil {
log.Die("Failed to copy %s to %s: %s", cachedir, dest, err)
}
// Load the chart.
c, err := model.Load(dest)
if err != nil {
log.Die("Failed to load chart: %s", err)
}
// Give user the option to bale if dependencies are not satisfied.
nope, err := dependency.Resolve(c.Chartfile, filepath.Join(home, WorkspaceChartPath))
if err != nil {
log.Warn("Failed to check dependencies: %s", err)
if !force {
log.Die("Re-run with --force to install anyway.")
}
} else if len(nope) > 0 {
log.Warn("Unsatisfied dependencies:")
for _, d := range nope {
log.Msg("\t%s %s", d.Name, d.Version)
}
if !force {
log.Die("Stopping install. Re-run with --force to install anyway.")
}
}
if err := uploadManifests(c, namespace); err != nil {
log.Die("Failed to upload manifests: %s", err)
}
}