feat(templater): Added support for file include
Adds a 'fileContent' template function to insert the literal contents of a file specified in the template. Signed-off-by: Niklas Wik <niklas.wik@nokia.com>
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4 changed files with 30 additions and 2 deletions
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@ -72,10 +72,11 @@ right.
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Some template functions come from Go's standard library and are listed in the
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[Go documentation][]. In addition the functions declared by [sprig][] are
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available in kontemplate, as well as two custom functions:
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available in kontemplate, as well as three custom functions:
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`json`: Encodes any supplied data structure as JSON.
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`passLookup`: Looks up the supplied key in [pass][]
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`passLookup`: Looks up the supplied key in [pass][].
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`fromFile`: Insert the contents of the given file from the resource set folder.
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## Examples:
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@ -25,6 +25,8 @@ spec:
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value: {{ .importantFeature }}
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- name: SOME_GLOBAL_VAR
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value: {{ .globalVar }}
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- name: FILE_VAR
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value: {{ fileContent "some-api/filevar.txt" }}
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---
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apiVersion: v1
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kind: Service
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24
templater/fromfile.go
Normal file
24
templater/fromfile.go
Normal file
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@ -0,0 +1,24 @@
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// Copyright (C) 2017 Niklas Wik <niklas.wik@nokia.com>
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//
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// This file is part of Kontemplate.
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//
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// Kontemplate is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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package templater
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import (
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"io/ioutil"
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)
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//GetFromFile returns file content as string
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func GetFromFile(file string) (string, error) {
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data, err := ioutil.ReadFile(file)
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if err != nil {
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return "", err
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}
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return string(data), nil
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}
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@ -193,6 +193,7 @@ func templateFuncs() template.FuncMap {
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}
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m["passLookup"] = GetFromPass
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m["lookupIPAddr"] = GetIPsFromDNS
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m["fileContent"] = GetFromFile
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return m
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}
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