43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
/*
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Copyright 2014 CoreOS, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package system
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import (
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"fmt"
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"reflect"
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)
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// dropinContents generates the contents for a drop-in unit given the config.
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// The argument must be a struct from the 'config' package.
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func dropinContents(e interface{}) string {
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et := reflect.TypeOf(e)
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ev := reflect.ValueOf(e)
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var out string
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for i := 0; i < et.NumField(); i++ {
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if val := ev.Field(i).String(); val != "" {
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key := et.Field(i).Tag.Get("env")
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out += fmt.Sprintf("Environment=\"%s=%s\"\n", key, val)
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}
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}
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if out == "" {
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return ""
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}
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return "[Service]\n" + out
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}
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