Add simplemap backend #36
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Hey @mpodlodowski, thank you for submitting this PR. I have left a comment feel free to tell me what do you think.
Let's refer this to #12.
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| return nil, backend.ErrNotFound | ||
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I think that this is redundant with what we do in the convert function. Moreover you are not handling all the primitive and this is very problematic, for example if the type is an int64 the method will end with a backend.ErrNotFound error.
What can you do to improve this ?
There is also the Unmarshaler and StructLoader interface which can be used maybe you can take a look at them (it's just a proposal not sure that is the correct way to go).
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Thank you! Tried the StructLoader way, take a look :)
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| mapRef := reflect.ValueOf(mapVal) | ||
| f.Value.Set(mapRef) |
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This will panic if the mapVal does not have the same type as f.Value. We could return an error if the types aren't identical, but this might be perceived as being overly restrictive, because (for example) you wouldn't be able to use an int-valued map item to fill a float-valued struct field.
Perhaps it would be easiest to implement the Backend on map[string]string instead of map[string]interface{} and then just implement the Get method?
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| // Backend that loads config from map | ||
| type Backend struct { |
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How about just:
type Backend map[string]interface{}
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Then we wouldn't need the NewBackend constructor function.
| Timeout time.Duration `config:"Timeout"` | ||
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| b := simplemap.NewBackend(map[string]interface{}{ |
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Let's have some test cases that test error cases, such as mismatched types, please.
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@mpodlodowski thanks for your code! Are you planning to make it to the end? |
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