local-server/cmd/dkl-dir2config/render-host.go

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package main
import (
"bytes"
"fmt"
"io"
"log"
yaml "gopkg.in/yaml.v2"
"novit.tech/direktil/local-server/pkg/clustersconfig"
)
func (ctx *renderContext) renderBootstrapPods() (pods []namePod) {
if ctx.Cluster.BootstrapPods == "" {
return
}
bootstrapPods, ok := src.BootstrapPods[ctx.Cluster.BootstrapPods]
if !ok {
log.Fatalf("no bootstrap pods template named %q", ctx.Cluster.BootstrapPods)
}
// render bootstrap pods
parts := bytes.Split(ctx.renderHostTemplates("bootstrap-pods", bootstrapPods), []byte("\n---\n"))
for _, part := range parts {
buf := bytes.NewBuffer(part)
dec := yaml.NewDecoder(buf)
for n := 0; ; n++ {
str := buf.String()
podMap := map[string]interface{}{}
err := dec.Decode(podMap)
if err == io.EOF {
break
} else if err != nil {
log.Fatalf("bootstrap pod %d: failed to parse: %v\n%s", n, err, str)
}
if len(podMap) == 0 {
continue
}
if podMap["metadata"] == nil {
log.Fatalf("bootstrap pod %d: no metadata\n%s", n, buf.String())
}
md := podMap["metadata"].(map[interface{}]interface{})
namespace := md["namespace"].(string)
name := md["name"].(string)
pods = append(pods, namePod{namespace, name, podMap})
}
}
return
}
func (ctx *renderContext) renderHostTemplates(setName string,
templates []*clustersconfig.Template) []byte {
log.Print("rendering host templates in ", setName)
buf := &bytes.Buffer{}
for _, t := range templates {
log.Print("- template: ", setName, ": ", t.Name)
fmt.Fprintf(buf, "---\n# %s: %s\n", setName, t.Name)
ctx.renderConfigTo(buf, t)
fmt.Fprintln(buf)
}
return buf.Bytes()
}