Expose OpenAI Image Usage Metadata#6662
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Map token usage from OpenAI image responses into a Spring AI-owned metadata type while preserving legacy construction and behavior when usage is absent. Closes spring-projects#6661 Signed-off-by: red-sprout <jjw05015@gmail.com>
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Summary
OpenAiImageResponseMetadata.OpenAiImageUsagevalue type without exposing OpenAISDK types in the public API.
metadata behavior, and value semantics with unit tests.
Closes #6661
Scope
This change only maps usage from image generation responses. It does not change
image editing, retries, batching, observability, or common image usage
abstractions.
Compatibility
The existing
OpenAiImageResponseMetadata(Long)constructor remains unchangedand delegates to the new constructor. When usage is absent, the existing
equals(),hashCode(), andtoString()behavior is preserved. Responsescontaining usage now include that usage in their value semantics.
Required token counts use
long, while optional output text and image tokencounts use nullable
Longvalues.