Support responseSchema in VertexAiGeminiChatOptions #3765
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@SuminAndrew, could you sign your commit using DCO? https://spring.io/blog/2025/01/06/hello-dco-goodbye-cla-simplifying-contributions-to-spring |
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@sobychacko Done |
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Hey @sobychacko, I wonder what are the next steps for this PR? Should I tag someone to get this reviewed? |
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Closes spring-projects#2087 Signed-off-by: Andrei Sumin <[email protected]>
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Updated the branch to fix conflicts with the main branch |
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Also tagging @ilayaperumalg |
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Closes #2087
VertexAI's GenerationConfig natively uses a
Schemaobject to configure response schema, which represents an OpenAPI schema. There's also aresponseJsonSchemaoption, but it is only supported in Gemini 2.5 (see: https://ai.google.dev/gemini-api/docs/structured-output#json-schema).To support this, I added a new
String responseSchemaproperty toVertexAiGeminiChatOptions. This allows users to provide an OpenAPI schema as a string, which is then converted into aSchemaobject internally. The same approach is already used for tool definitions viainputSchemas, so I extracted the conversion logic into a shared utility class. I also added corresponding unit tests.