feat: add json serialization bridge - #387
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curfew-marathon merged 3 commits intoSep 16, 2026
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curfew-marathon merged 3 commits into
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WalkthroughThe SDK adds a ChangesSerializer and streaming migration
Estimated code review effort: 4 (Complex) | ~45 minutes Suggested reviewers: Sequence Diagram(s)sequenceDiagram
participant OpenFgaClient
participant StreamingApiExecutor
participant BaseStreamingApi
participant JsonSerializer
OpenFgaClient->>StreamingApiExecutor: create executor with SdkTypeToken
StreamingApiExecutor->>BaseStreamingApi: pass StreamResult type
BaseStreamingApi->>JsonSerializer: deserialize stream line with type token
JsonSerializer-->>BaseStreamingApi: return StreamResult
Merge Risk: 🟡 Moderate · up to Custom JSON serializer implementations cannot deserialize generic SDK responses through the new public API. Expose the token type before merging so the serializer abstraction works for supported generic response paths. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Actionable comments posted: 1
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Inline comments:
In `@src/main/java/dev/openfga/sdk/api/client/SdkTypeToken.java`:
- Around line 37-39: Make SdkTypeToken.getType() public so external
JsonSerializer implementations can access the captured Type, including
parameterized tokens created by SdkTypeToken.parameterized(...). Add
documentation describing that the method returns the captured type.
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📒 Files selected for processing (22)
src/main/java/dev/openfga/sdk/api/BaseStreamingApi.javasrc/main/java/dev/openfga/sdk/api/OpenFgaApi.javasrc/main/java/dev/openfga/sdk/api/StreamedListObjectsApi.javasrc/main/java/dev/openfga/sdk/api/client/ApiClient.javasrc/main/java/dev/openfga/sdk/api/client/ApiExecutor.javasrc/main/java/dev/openfga/sdk/api/client/ApiExecutorRequestBuilder.javasrc/main/java/dev/openfga/sdk/api/client/HttpRequestAttempt.javasrc/main/java/dev/openfga/sdk/api/client/Jackson2JsonSerializer.javasrc/main/java/dev/openfga/sdk/api/client/JsonSerializer.javasrc/main/java/dev/openfga/sdk/api/client/OpenFgaClient.javasrc/main/java/dev/openfga/sdk/api/client/SdkTypeToken.javasrc/main/java/dev/openfga/sdk/api/client/StreamingApiExecutor.javasrc/main/java/dev/openfga/sdk/errors/FgaError.javasrc/main/java/dev/openfga/sdk/errors/SdkSerializationException.javasrc/test/java/dev/openfga/sdk/api/OpenFgaApiTest.javasrc/test/java/dev/openfga/sdk/api/StreamingApiTest.javasrc/test/java/dev/openfga/sdk/api/auth/OAuth2ClientTest.javasrc/test/java/dev/openfga/sdk/api/client/ApiClientTest.javasrc/test/java/dev/openfga/sdk/api/client/Jackson2JsonSerializerTest.javasrc/test/java/dev/openfga/sdk/api/client/OpenFgaClientHeadersTest.javasrc/test/java/dev/openfga/sdk/api/client/StreamedListObjectsTest.javasrc/test/java/dev/openfga/sdk/api/client/StreamingApiExecutorTest.java
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Codecov Report❌ Patch coverage is ❌ Your project status has failed because the head coverage (39.32%) is below the target coverage (80.00%). You can increase the head coverage or adjust the target coverage. Additional details and impacted files@@ Coverage Diff @@
## main #387 +/- ##
============================================
+ Coverage 38.99% 39.32% +0.33%
- Complexity 1308 1335 +27
============================================
Files 198 202 +4
Lines 7719 7791 +72
Branches 907 912 +5
============================================
+ Hits 3010 3064 +54
- Misses 4562 4579 +17
- Partials 147 148 +1 ☔ View full report in Codecov by Harness. 🚀 New features to boost your workflow:
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🟡 Changes recommended
It introduces source and binary compatibility breaks, an unsafe type-token factory, and a non-independent wire-parity test.
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Pull request overview
Introduces an SDK-owned JSON serialization bridge to decouple future APIs from Jackson 2 while retaining deprecated compatibility APIs.
Changes:
- Adds serializer, type-token, and serialization-exception abstractions.
- Routes request, response, error, and streaming serialization through the bridge.
- Adds compatibility, generic-streaming, and wire-format tests.
File summaries
| File | Description |
|---|---|
src/main/java/dev/openfga/sdk/api/BaseStreamingApi.java |
Uses serializer and SDK type tokens for streams. |
src/main/java/dev/openfga/sdk/api/OpenFgaApi.java |
Serializes requests through the bridge. |
src/main/java/dev/openfga/sdk/api/StreamedListObjectsApi.java |
Replaces Jackson type references. |
src/main/java/dev/openfga/sdk/api/client/ApiClient.java |
Adds serializer configuration and deprecated mapper wrappers. |
src/main/java/dev/openfga/sdk/api/client/ApiExecutor.java |
Handles SDK serialization failures. |
src/main/java/dev/openfga/sdk/api/client/ApiExecutorRequestBuilder.java |
Serializes dynamic request bodies through the bridge. |
src/main/java/dev/openfga/sdk/api/client/HttpRequestAttempt.java |
Deserializes responses and errors through the bridge. |
src/main/java/dev/openfga/sdk/api/client/Jackson2JsonSerializer.java |
Implements the Jackson 2 adapter. |
src/main/java/dev/openfga/sdk/api/client/JsonSerializer.java |
Defines the serialization abstraction. |
src/main/java/dev/openfga/sdk/api/client/OpenFgaClient.java |
Adds SDK type-token streaming overloads. |
src/main/java/dev/openfga/sdk/api/client/SdkTypeToken.java |
Captures generic response types. |
src/main/java/dev/openfga/sdk/api/client/StreamingApiExecutor.java |
Migrates streaming deserialization to SDK tokens. |
src/main/java/dev/openfga/sdk/errors/FgaError.java |
Parses API errors using the serializer. |
src/main/java/dev/openfga/sdk/errors/SdkSerializationException.java |
Adds a library-independent serialization exception. |
src/test/java/dev/openfga/sdk/SdkTypeTokenTest.java |
Tests reflected generic capture. |
src/test/java/dev/openfga/sdk/api/OpenFgaApiTest.java |
Updates serializer mocking. |
src/test/java/dev/openfga/sdk/api/StreamingApiTest.java |
Updates streaming serializer setup. |
src/test/java/dev/openfga/sdk/api/auth/OAuth2ClientTest.java |
Updates OAuth serializer setup. |
src/test/java/dev/openfga/sdk/api/client/ApiClientTest.java |
Tests mapper compatibility accessors. |
src/test/java/dev/openfga/sdk/api/client/Jackson2JsonSerializerTest.java |
Tests serialization and generic reads. |
src/test/java/dev/openfga/sdk/api/client/OpenFgaClientHeadersTest.java |
Updates serializer mocking. |
src/test/java/dev/openfga/sdk/api/client/StreamedListObjectsTest.java |
Updates serializer mocking. |
src/test/java/dev/openfga/sdk/api/client/StreamingApiExecutorTest.java |
Tests SDK token streaming overloads. |
Review details
Suppressed comments (1)
src/main/java/dev/openfga/sdk/api/BaseStreamingApi.java:52
- The approved RFC explicitly calls for deprecating the
BaseStreamingApiTypeReferenceconstructor, but this change removes it. Any external subclass using the current protected constructor gets a source break, and existing binaries can fail withNoSuchMethodError. Keep the old constructor as a deprecated overload that delegates to the new token-based path.
protected BaseStreamingApi(
Configuration configuration, ApiClient apiClient, SdkTypeToken<StreamResult<T>> streamResultType) {
- Files reviewed: 23/23 changed files
- Comments generated: 4
- Review effort level: Balanced
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@SoulPancake ready for your eyes! |
curfew-marathon
enabled auto-merge
September 15, 2026 16:17
SoulPancake
approved these changes
Sep 16, 2026
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LGTM
Thanks @Adrastopoulos
Adrastopoulos
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adrastopoulos/jackson-serialization-bridge
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September 16, 2026 19:12
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Description
Adds the Jackson 2 compatibility bridge from the approved Jackson 3 RFC. The SDK now owns its serialization API, while existing mapper APIs continue to work with deprecation warnings.
What problem is being solved?
Public SDK APIs and internal request paths depend directly on Jackson 2 types. This prevents a later Jackson 3 migration without an abrupt source break.
How is it being solved?
An SDK-owned
JsonSerializerinterface andSdkTypeTokenhide JSON library types from new APIs. The current implementation delegates to the existing Jackson 2 configuration and preserves its wire format.What changes are made to solve it?
JsonSerializer,SdkTypeToken, andSdkSerializationException.TypeReferenceAPIs as deprecated compatibility wrappers.References
Test plan
./gradlew build./gradlew test --tests dev.openfga.sdk.api.client.Jackson2JsonSerializerTest --tests dev.openfga.sdk.api.client.ApiClientTest --tests dev.openfga.sdk.api.client.StreamingApiExecutorTestmake build-client-javainsdk-generatorReview Checklist
sdk-generator.Summary by CodeRabbit
New Features
Compatibility