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internal: add structdiff.IsEqual() - #4203
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denik
requested review from
andrewnester, anton-107, pietern and shreyas-goenka
as code ownersJanuary 6, 2026 13:48
| zero1 := v1Field.IsZero() | ||
| zero2 := v2Field.IsZero() | ||
| if zero1 || zero2 { |
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What about the other way around? Fields that are nil but are present in ForceSendFields should be set to their zero value.
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not sure what you mean, can you post an example testcase?
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consider:
a = foo{
myfield: nil,
ForceSendFields: []{"myfield"}
}
b = foo{
myfield: "",
ForceSendFields: []{"myfield"}
}
a and b should be equal in this case, regardless of the omitempty annotation.
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what type is myfield? it's not a string, right?
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In Go SDK ForceSendFields is only meaningful on "basic" types https://github.com/databricks/databricks-sdk-go/blob/main/marshal/types.go#L5
in cli repo libs/structs and libs/dyn we also apply on maps and slices. However, AFAIK it is never applied it to pointers.
pietern
approved these changes
Jan 6, 2026
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Commit: 091ee38
26 interesting tests: 21 KNOWN, 2 flaky, 2 FAIL, 1 SKIP
Top 50 slowest tests (at least 2 minutes):
|
| return false | ||
| } | ||
| return equalValues(v1, v2) |
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Can't we just use reflect.DeepEqual here?
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no, see the comment about ForceSendFields
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This PR is prompted by a real issue btw where I did use reflect.DeepEqual but it did not do what's expected because ForceSendFields in one case was set but not in the other.
SDK always adds fields to ForceSendFields regardless of whether they are needed there or not. Our code in many places only adds it if the value is zero.
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eng-dev-ecosystem-bot
commented
Jan 6, 2026
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Commit: 2f558af
65 interesting tests: 23 MISS, 21 KNOWN, 16 FAIL, 3 flaky, 1 PANIC, 1 SKIP
Top 50 slowest tests (at least 2 minutes):
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denik added a commit
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May 20, 2026
## Changes New function structdiff.IsEqual() which follows the same logic as structdiff.GetStructDiff() but does not build a diff. ## Why Need this in #4201 reflect.DeepEqual() does not work for types with ForceSendFields because ForceSendFields can have more or less fields in it without changing the actual value. ## Tests Unit tests.
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Changes
New function structdiff.IsEqual() which follows the same logic as structdiff.GetStructDiff() but does not build a diff.
Why
Need this in #4201
reflect.DeepEqual() does not work for types with ForceSendFields because ForceSendFields can have more or less fields in it without changing the actual value.
Tests
Unit tests.