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[Bug]: JsonFormat parser fails on standard OpenAPI AgentCard (securityRequirements & securitySchemes)

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评估

难度
4/5
预计耗时
3-5 天
新手友好度
55/100
Issue 类型
缺陷
描述清晰度
基本清楚
活跃度
活跃
技术栈
java, openapi
领域
api

调研方向

Reproduce the failure with Protobuf's JsonFormat.parser().merge() using a standard OpenAPI AgentCard payload. Inspect the AgentCard, SecurityRequirement, and SecurityScheme definitions and the ProtoUtils.FromProto.agentCard validation; done means standard securityRequirements and securitySchemes deserialize successfully without manual Jackson AST mutation.

由索引模型根据 Issue 内容生成。

描述

What happened?

When deserializing an OpenAPI-compliant AgentCard JSON payload into org.a2aproject.sdk.grpc.AgentCard using Protobuf's JsonFormat.parser().merge(), two schema mismatch errors occur because the Protobuf definitions expect custom nested message structures instead of standard OpenAPI JSON structures.

Bug 1: securityRequirements Array Mismatch

Issue: OpenAPI specs define security requirements as "bearerAuth": []. In a2a.proto, SecurityRequirement maps schemes as map<string, StringList>, expecting a nested StringList message ({"bearerAuth": {"list": []}}).

Error: com.google.protobuf.InvalidProtocolBufferException: Expect message object but got: [].

Bug 2: securitySchemes Flattened Structure Mismatch

Issue: OpenAPI specs define security scheme parameters at the root level ("scheme": "bearer", "bearerFormat": "API Key"). Protobuf expects these wrapped inside the oneof field http ("http": {"scheme": "bearer", ...}).

Error: InvalidParamsError: SecurityScheme oneof field not set during ProtoUtils.FromProto.agentCard(builder) validation.

Expected Behavior
The SDK should provide an adapter or custom JSON deserializer capable of parsing standard OpenAPI Agent Cards without requiring clients to manually mutate Jackson AST nodes before Protobuf merging.

Environment

SDK Version: Protobuf Java 4.33.1 / SDK org.a2aproject.sdk.grpc

Relevant log output

Code of Conduct
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主要语言
Java
星标
505
派生
185
平均合并
1 天 5 小时
30 天内合并 PR
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