[英]Can I use functions from _helpers.tpl to fill out values.yaml in helm charts?
Right now, I have a values.yaml with a section that looks a bit like this:现在,我有一个 values.yaml,其中的部分看起来有点像这样:
...
imageName:
ports:
- containerPort: 7980
name: db0
protocol: TCP
- containerPort: 7981
name: db1
protocol: TCP
- containerPort: 7982
name: db2
protocol: TCP
- containerPort: 7983
name: db3
protocol: TCP
- containerPort: 7984
name: db4
protocol: TCP
- containerPort: 7985
name: db5
protocol: TCP
- containerPort: 7986
name: db6
protocol: TCP
- containerPort: 7987
name: db7
protocol: TCP
- containerPort: 7988
name: db8
protocol: TCP
- containerPort: 7989
name: db9
protocol: TCP
- containerPort: 7990
name: db10
protocol: TCP
...
I'd like to clean this up by creating a function in _helpers.tpl that will take the min port value (7980) and the max port value (7990) and create the structure for each one in that format.我想通过在 _helpers.tpl 中创建一个函数来清理它,该函数将采用最小端口值 (7980) 和最大端口值 (7990) 并以该格式为每一个创建结构。
I am wondering: Is this possible?我想知道:这可能吗? I am having a lot of trouble with this and using the helpers file in general so if anyone can nudge me in the right direction with how to accomplish this, I would appreciate that too!
我在这方面遇到了很多麻烦,并且通常使用帮助文件,所以如果有人能在正确的方向上推动我如何实现这一点,我也将不胜感激!
Thanks :)谢谢 :)
This should be possible.这应该是可能的。 Say you configure your chart with the number of ports and the starting port:
假设您使用端口数和起始端口配置图表:
# values.yaml (or a `helm install -f` values file)
numberOfPorts: 11
startingPort: 7980
You can use the until
template function to turn that into a list of numbers:您可以使用
until
模板函数将其转换为数字列表:
{{- $dbs := until .Values.numberOfPorts }}
Now you can use the standard range
function to loop over that list.现在您可以使用标准
range
函数循环遍历该列表。 Inside the loop body the value will be an integer from 0 to numberOfPorts - 1
and you can produce the list item accordingly.在循环体内,该值将是一个从 0 到
numberOfPorts - 1
的整数,您可以相应地生成列表项。 Also note that range
takes over the .
另请注意,
range
接管.
special variable, so you'll need to save anything you need from .Values
outside the range
loop.特殊变量,因此您需要从
range
循环之外的.Values
保存您需要的任何内容。
imageName:
ports:
{{- $startingPort := .Values.startingPort }}
{{- range $i := until .Values.numberOfPorts }}
- containerPort: {{ add $startingPort $i }}
name: db{{ $i }}
protocol: TCP
{{- end }}
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