Refactor configmapprovider.Provider and Retrieved interfaces #4403
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@@ Coverage Diff @@
## main #4403 +/- ##
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- Coverage 90.31% 90.30% -0.02%
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Files 177 177
Lines 10338 10343 +5
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+ Hits 9337 9340 +3
- Misses 779 782 +3
+ Partials 222 221 -1
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| // TODO: see if this can be eliminated. | ||
| type ChangeEvent struct { | ||
| // Error is nil if the config is changed and needs to be re-fetched using Get. | ||
| // It is set to configsource.ErrSessionClosed if Close was called. |
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Not sure we need this. When Close is called we can simply just not call the onChange callback. We just need to ensure that we will not call the callback after Close returns.
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Yes, see my TODO comment above. Going to look into that separately.
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Perhaps we get rid of Error field but keep ChangeEvent for the possibility to extend in the future without breaking the interface.
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We still need an "error" for the case when the watcher fails something like an "errorHandler" for the watcher. We either have to funcs "onChange" and "onError" or we have this and if err != nil probably we should close the service? Because I don't know how to recover similar with the Host.ReportError()?
So I would keep for the moment the error.
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This uses a callback instead of a blocking WaitForUpdate function to notify about config changes. This simplifies the usage of the Provider, especially when watching for changes is required. A follow up PR will add watching capabilities to existing Provider implementations.
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| // TODO: see if this can be eliminated. | ||
| type ChangeEvent struct { | ||
| // Error is nil if the config is changed and needs to be re-fetched using Get. | ||
| // It is set to configsource.ErrSessionClosed if Close was called. |
There was a problem hiding this comment.
We still need an "error" for the case when the watcher fails something like an "errorHandler" for the watcher. We either have to funcs "onChange" and "onError" or we have this and if err != nil probably we should close the service? Because I don't know how to recover similar with the Host.ReportError()?
So I would keep for the moment the error.
This uses a callback instead of a blocking WaitForUpdate function
to notify about config changes.
This simplifies the usage of the Provider, especially when watching
for changes is required.
A follow up PR will add watching capabilities to existing Provider
implementations.