feat: add built-in functionRegion parameter for region#1928
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This pull request introduces a new built-in parameter functionRegion (and its alias region) to resolve the Cloud region from the FUNCTION_REGION environment variable, along with corresponding unit tests and CEL expression tests. The reviewer suggests wrapping the environment variable cleanup in a try...finally block within the unit tests to prevent potential test pollution if assertions fail.
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### Description GCF v2 does not include the FUNCTION_REGION environment variable by default, which can break some workflows. In particular, Firebase Extensions may depend on this variable to target callable or task queue functions in the same region. This change adds the `functionRegion` built-in parameter (and `region` alias) to the SDK. ### Scenarios Tested - Unit tests for value extraction and CEL representation. ### Sample Commands - N/A (SDK library)
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| * A built-in parameter that resolves to the Cloud region, without prompting | ||
| * the deployer. Alias for {@link functionRegion}. | ||
| */ | ||
| export const region: Param<string> = functionRegion; |
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For my own learning... why do we need a region alias of this?
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Description
GCF v2 does not include the FUNCTION_REGION environment variable by default, which can break some workflows. In particular, Firebase Extensions may depend on this variable to target callable or task queue functions in the same region. This change adds the
functionRegionbuilt-in parameter (andregionalias) to the SDK.Scenarios Tested
relnote: Add
functionRegionbuilt-in parameter for region