Feat: Expressions anywhere in the configuration #930
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This commit introduces the ability to preprocess configuration data to evaluate expressions contained within it before the data is unmarshalled into Go structures. It leverages a new function, `ProcessConfig`, from the `expr` package, which searches for and evaluates expressions denoted by `${{...}}` syntax.
Additionally, this commit includes comprehensive tests for both the `LoadConfig` function and the newly added `processConfig` logic to ensure that expressions are correctly evaluated and that the configuration loading behaves as expected, even when faced with invalid configurations or expressions.
The ability to preprocess and evaluate expressions within the configuration could simplify dynamic configuration scenarios and reduce the need for external templating tools.
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Just wondering, why not add support for go-template the config file directly? |
What do you mean? Go-template is a template engine, but my idea is in a dynamic calculated configuration file |
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If you make the config file a template, and use go-template to render it before consuming from it, it should give a similar result but maybe more powerful. streams:
test:
- rtps://{{ env "MY_USER" }}:{{ env "MY_PASS" }}@myhost.com |
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This PR introduces the ability to preprocess configuration data to evaluate expressions contained within it.
The ability to preprocess and evaluate expressions within the configuration could simplify dynamic configuration scenarios and reduce the need for external templating tools.
example:
will be pre-processed to
http://192.168.88.158/live/index.m3u8Roadmap: