Feature/spring boot 4 experimental #5736
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backend/src/test/kotlin/org/loculus/backend/testutil/docker/DockerPostgres.kt
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backend/src/main/kotlin/org/loculus/backend/config/ExposedAutoConfigurationCompat.kt
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## Changes **Build Configuration:** - Upgrade Spring Boot from 3.5.7 to 4.0.0 - Add spring-boot-jackson2 for Jackson 2 compatibility - Add spring-boot-starter-flyway (now required explicitly) - Add spring-boot-test-autoconfigure and spring-boot-webmvc-test - Add testcontainers-bom:1.20.4 for module management - Regenerate gradle.lockfile with Spring Boot 4.0 dependencies **Code Changes:** - Update DataSourceTransactionManagerAutoConfiguration import (moved to jdbc.autoconfigure package) - Update @AutoConfigureMockMvc imports in 3 test files (moved to webmvc.test.autoconfigure package) ## Results ✅ Main application compiles successfully ✅ JetBrains Exposed 0.61.0 compatible (no update needed!) ✅ Jackson 2 compatibility working ✅ Spring Framework 7.0.1 integrated ✅ Spring Security 7.0.x working⚠️ Test compilation has null-safety issues (expected with Spring Framework 7's JSpecify) ## New Dependency Versions - Spring Framework: 6.2.12 → 7.0.1 - Jackson: 2.19.2 → 2.20.1 (via jackson2 compatibility) - Flyway: 11.7.2 → 11.14.1 - Tomcat: → 11.0.14 - Testcontainers: → 1.20.4 ## Documentation See tmp/spring-boot-4-migration-findings.md for comprehensive findings. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
- Update dependencies to tools.jackson.* - Rename imports from com.fasterxml.jackson to tools.jackson - Fix usage of immutable ObjectMapper (JsonMapper builder) - Rename TextNode to StringNode - Rename JsonSerializer/JsonDeserializer to ValueSerializer/ValueDeserializer - Update SerializerProvider to SerializationContext in serialize methods
Investigated usage and confirmed jackson-dataformat-yaml is only used in tests (SwaggerUiTest). Moved it from implementation to testImplementation to reduce production dependencies.
…ncies - Migrated Jackson from com.fasterxml.jackson to tools.jackson group (Jackson 3). - Moved jackson-dataformat-yaml, io.minio:minio, and org.tukaani:xz to testImplementation as they are not used in production code. - Restored explicit version for commons-compress. - Updated gradle.lockfile and formatted code via ktlint.
…ant properties - Replace custom ObjectMapper bean with JsonMapperBuilderCustomizer in BackendSpringConfig. - Remove redundant Jackson and bean overriding properties from test application.properties. - Cleanup SQL_FILE appender in logback-test.xml.
- Consolidate ObjectMapper configurations across production, tests, and database JSONB serialization to ensure consistent behavior (disabled FAIL_ON_UNKNOWN_PROPERTIES and FAIL_ON_NULL_FOR_PRIMITIVES). - Remove redundant @JsonIgnoreProperties annotations from configuration classes now that global defaults handle them. - Add TODO(#5754) to document the double-encoding hack in ReleasedDataModel required by the current website consumer. - Fix regression in BackendApplication where the wrong class name was used for Exposed auto-configuration exclusion, which broke the test suite. - Update test clients (FilesClient, GetReleasedDataFileSharingEndpointTest) to use the centralized jacksonObjectMapper property instead of creating fresh instances.
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