Patrice Ferlet
418a0a8029
Use compose-go https://github.com/compose-spec/compose-go to make Katenary parsing compose file the official way. Add labels: - `volume-from` (with `same-pod`) to avoid volume repetition - `ignore` to ignore a service - `mapenv` (replaces the `env-to-service`) to map environment to helm variable (as a template string) - `secret-vars` declares variables as secret values More: - Now, environment (as secret vars) are set in values.yaml - Ingress has got annotations in values.yaml - Probes (liveness probe) are improved - fixed code to optimize - many others fixes about path, bad volume check, refactorisation, tests...
102 lines
3.1 KiB
Go
102 lines
3.1 KiB
Go
package writers
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import (
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"bytes"
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"katenary/helm"
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"os"
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"path/filepath"
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"strings"
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"gopkg.in/yaml.v3"
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)
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const (
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classAndVersionCondition = `{{- if and .Values.__name__.ingress.class (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion) }}` + "\n"
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versionCondition118 = `{{- if semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion }}` + "\n"
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versionCondition119 = `{{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion }}` + "\n"
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apiVersion = `{{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion -}}
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apiVersion: networking.k8s.io/v1
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{{- else if semverCompare ">=1.14-0" .Capabilities.KubeVersion.GitVersion -}}
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apiVersion: networking.k8s.io/v1beta1
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{{- else -}}
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apiVersion: extensions/v1beta1
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{{- end }}`
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)
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// BuildIngress generates the ingress yaml file with conditions.
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func BuildIngress(ingress *helm.Ingress, name, templatesDir string) {
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// Set the backend for 1.18
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for _, b := range ingress.Spec.Rules {
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for _, p := range b.Http.Paths {
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p.Backend.ServiceName = p.Backend.Service.Name
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if n, ok := p.Backend.Service.Port["number"]; ok {
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p.Backend.ServicePort = n
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}
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}
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}
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kind := "ingress"
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buffer := bytes.NewBuffer(nil)
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fname := filepath.Join(templatesDir, name+"."+kind+".yaml")
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enc := yaml.NewEncoder(buffer)
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enc.SetIndent(IndentSize)
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buffer.WriteString("{{- if .Values." + name + ".ingress.enabled -}}\n")
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enc.Encode(ingress)
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buffer.WriteString("{{- end -}}")
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fp, err := os.Create(fname)
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if err != nil {
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panic(err)
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}
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defer fp.Close()
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content := string(buffer.Bytes())
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lines := strings.Split(content, "\n")
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backendHit := false
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for _, l := range lines {
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// apiVersion is a pain...
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if strings.Contains(l, "apiVersion:") {
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l = apiVersion
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}
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// add annotations linked to the Values
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if strings.Contains(l, "annotations:") {
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n := CountSpaces(l) + IndentSize
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l += "\n" + strings.Repeat(" ", n) + "{{- range $k, $v := .Values.__name__.ingress.annotations }}\n"
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l += strings.Repeat(" ", n) + "{{ $k }}: {{ $v }}\n"
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l += strings.Repeat(" ", n) + "{{- end }}"
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l = strings.ReplaceAll(l, "__name__", name)
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}
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// pathTyype is ony for 1.19+
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if strings.Contains(l, "pathType:") {
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n := CountSpaces(l)
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l = strings.Repeat(" ", n) + versionCondition118 +
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l + "\n" +
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strings.Repeat(" ", n) + "{{- end }}"
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}
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if strings.Contains(l, "ingressClassName") {
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// should be set only if the version of Kubernetes is 1.18-0 or higher
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cond := strings.ReplaceAll(classAndVersionCondition, "__name__", name)
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l = ` ` + cond + l + "\n" + ` {{- end }}`
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}
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// manage the backend format following the Kubernetes 1.19-0 version or higher
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if strings.Contains(l, "service:") {
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n := CountSpaces(l)
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l = strings.Repeat(" ", n) + versionCondition119 + l
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}
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if strings.Contains(l, "serviceName:") || strings.Contains(l, "servicePort:") {
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n := CountSpaces(l)
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if !backendHit {
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l = strings.Repeat(" ", n) + "{{- else }}\n" + l
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} else {
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l = l + "\n" + strings.Repeat(" ", n) + "{{- end }}\n"
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}
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backendHit = true
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}
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fp.WriteString(l + "\n")
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}
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}
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