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https://github.com/helmfile/helmfile.git
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David Genest
7bfb58c0e4
This allows using the environment values defined in the environments: section of helmfile.yaml to be used from other sections of the file. This works by having two template renderers, the first-pass and the second-pass renderer. The first-pass render renders a helmfile.yaml template with replacing template functions has side-effects with noop. So, use only funcs that don't have side-effects to compose your environment values. Then the second-pass renderer renders the same helmfile.yaml template, but with the environment values loaded by the first-pass renderer. The implementation uses a buffer instead of re-reading the file twice. Resolves #297
42 lines
803 B
Go
42 lines
803 B
Go
package tmpl
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import (
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"bytes"
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"github.com/Masterminds/sprig"
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"text/template"
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)
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func (c *Context) stringTemplate() *template.Template {
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funcMap := sprig.TxtFuncMap()
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for name, f := range c.createFuncMap() {
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funcMap[name] = f
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}
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tmpl := template.New("stringTemplate").Funcs(funcMap)
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if c.preRender {
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tmpl.Option("missingkey=zero")
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} else {
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tmpl.Option("missingkey=error")
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}
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return tmpl
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}
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func (c *Context) RenderTemplateToBuffer(s string, data ...interface{}) (*bytes.Buffer, error) {
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var t, parseErr = c.stringTemplate().Parse(s)
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if parseErr != nil {
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return nil, parseErr
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}
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var tplString bytes.Buffer
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var d interface{}
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if len(data) > 0 {
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d = data[0]
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}
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var execErr = t.Execute(&tplString, d)
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if execErr != nil {
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return &tplString, execErr
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}
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return &tplString, nil
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}
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