Spring/spring-boot: Release v2.4.0-M2

Name: spring-boot

Owner: Spring

Release: v2.4.0-M2

Released: 2020-08-13

License: Apache-2.0

Release Assets:

⭐ New Features

Prefer non-reflective access to ConfigurationClassPostProcessor #22858
Do not include cookie headers in HTTP traces by default #22829
Jetty with Conscrypt no longer a requirement for easy HTTP/2 #22826
Add no-pull option for image building #22736
Use new core framework r2dbc support #22708
Fail hard if spring.profiles.include is used with new config processing #22693
Allow DurationFormat and PeriodFormat to be used on parameters #22646
Allow for programatic access to new ConfigDataEnvironment processing #22601
Instrument SpringBootApplication for application startup metrics #22600
Add configuration to disable Redis Cluster dynamic sources refresh #22571
Allow Jedis to be selected when both Jedis and Lettuce are on the classpath #22569
Add basic auth support for Prometheus pushgateway #22548
Add functional constructor to EnvironmentPostProcessorApplicationListener #22529
Add support for profile groups #22522
Extract DefaultPropertiesPropertySource class #22520
Add plugin management for liquibase-maven-plugin #22499
Add CloudPlatform.isEnforced that uses a Binder #22498
Replace ConfigFileApplicationListener and rework application properties support #22497
Add DeferredLogFactory support #22496
Add multi-document properties file support #22495
Add ConfigurationPropertySource.from factory method #22494
Add @Name support for value object binding #22492
Improve Liveness/Readiness health indicators and probes configuration #22483
Remove version management for exec-maven plugin #22397
Make DefaultErrorAttributes easier to subclass for message customization #22378
Add properties for Netty HttpDecoderSpec #22367
Avoid unnecessary allocations in ConditionMessage for NORMAL style #22331
Allow SpringApplication to create its application context without requiring reflection #22322
Add failure analyzer for missing Liquibase changelog #22320
Switch Neo4j health checks to the new Neo4j driver #22302
Add auto-configuration for Neo4j driver #22301
Upgrade to Spring Data Neo4j 6 #22299
Measure with nanoseconds in HttpExchangeTracer #22266
Support configuration of localEntityIdTemplate for a SAML Relying Party #22258
Add a property to not create HealthIndicators from AbstractRoutingDatasources #22222
Add support for reactive Elasticsearch healthcheck #22215
Support incremental annotation processing with Gradle #22150
Allow exclude only health groups #22053
Auto-configure Rabbit connection factory with CredentialsProvider and CredentialsRefreshService when available #22016
Allow specifying unit type of configuration property when injected via constructor #21746
Add option to configure PathPatternParser in Spring MVC #21694
Add support for easily disabling metrics export #21658
Support iso offset time and date-time conversion with MVC and WebFlux by setting time or date-time properties to iso-offset #21630
Add properties to control exceptions ignored by LdapTemplate #21289
Support additional R2DBC pool properties #21219
Switching default to include layers index for fat jar #20983
Add support for creating property sources from volume-mounted Kubernetes ConfigMaps and Secrets #19990
Add a test slice for Spring Data Cassandra #17490
Consider spring.profiles.default when processing configuration files #15994
Application properties outside of jar should take precedence over profile-specific variants inside the jar #3845

🪲 Bug Fixes

MustacheEnvironmentCollector with nullValue compiler option no longer works in version 2.3.1 #22938
Externalized Configuration ignores null values in SPRING_APPLICATION_JSON #22897
CouchbaseCacheManager can no longer be customized using CacheManagerCustomizer #22874
Requests that should be handled by an additional DispatcherServlet result in a 404 response #22856
Legacy endpoint ids with '-' do not migrate cleanly #22850
When Reactor's debug agent fails to initialize, the cause of the failure is discarded #22848
StartupStep are closed twice in SpringApplicationRunListeners #22776
OCI image build fails if environment has any empty properties #22735
Kubernetes readiness probe endpoint returning 404 #22698
NPE in BeanDefinitionLoader when loading non-Class sources and XML support is disabled #22696
LiquibaseEndpoint does not report change sets from ancestor contexts #22687
Async exceptions not handled by error pages in war deployments #22673
XADataSourceAutoConfiguration is difficult to use with DB2XADataSource as it does not have a URL property #22642
TaskExecutorBuilder only uses second-precision when configuring the await termination period #22612
Profile groups are not applied to the environment #22605
Setting ignoreInvalidFields=true on @ConfigurationProperties causes unknown fields to be ignored as well #22586
Spring Boot 2.3.2: new context is created for every IT class if SpyBean is used #22584
Background preinitialisation may cause Jackson2ObjectMapperBuilder's Kotlin detection warning to be silently dropped #22581
UndertowWebServerFactoryCustomizer does not support Options but only UndertowOptions #22579
WebMvcTest and WebFluxTest do not include Jackson Module beans #22577
CouchbaseCacheConfiguration is not ordered properly #22568
AbstractRepositoryConfigurationSourceSupport does not override registerBeanDefinitions(AnnotationMetadata, BeanDefinitionRegistry) #22546
Filter empty YAML documents #22493
Numerous logs mentioning a failed JNDI lookup when using Jetty #22419
ConditionMessage#items throws an NPE with a null list of items although the Javadoc states it is tolerated #22357
Image building fails with an unhelpful error message when building an image from a jar that includes the launch script #22349
Temporary files not cleaned up after Maven plugin execution #22328
OnClassCondition tries to determine the outcome for single auto-configuration classes in parallel #22327
ConfigurationPropertiesBeanDefinitionValidator interferes with EclipseLink load-time weaving #22326
Image building fails when DOCKER_HOST is set to a local socket prefixed with unix:// #22304
A WebFlux app that depends on com.amazonaws:DynamoDBLocal fails to start #22283
The failure when spring.redis.url is configured with a redis-sentinel:// URL is hard to diagnose #22272
Property spring.autoconfigure.exclude ignored by test slices #22263
OAuth2ResourceServerAutoConfiguration does not back off completely when spring-security-oauth2-resource-server is not on the classpath #22255
NullPointerException in ErrorPageFilter when a MissingServletRequestParameterException is thrown and there's no DefaultHandlerExceptionResolver #22250
Period conversion does not support a ChronoUnit of WEEKS but supports weeks in ISO-8601 (e.g. P2W) and simple (e.g. 2w) formats #22238
Layered bootJar task causes warnings when custom source set is present in the project #22202
@ConditionalOnSingleCandidate does not match when there is a single candidate that is a scoped bean #22198
Kafka Stream consumer metrics were lost in the move away from KafkaConsumerMetrics #22196
NPE in spring-boot-maven-plugin:build-image when setting custom builder that is not a builder #22180
Accept empty filter dispatcher types in auto-configurations #22176
TomcatMetricsBinder may log a warning for an NPE if the context is closed before the ApplicationStartedEvent is published #22168
Resource loading fails in Tomcat when Spring Boot is loaded from the common class loader #22160
Inconsistent configuration ordering with profiles #18199
Conditional documents in profile specific file are not loaded consistently #11109

📔 Documentation

PushGateway documentation does not document enabled flag properly #22931
Default value of server.jetty.accesslog.format is wrongly associated to server.forward-headers-strategy #22928
Use wildcard in BP_JVM_VERSION with image building #22923
Kotlin examples for configuring bootBuildImage's environment use wrong map configuration syntax #22917
Mention configuration customizers for WebTestClient and RestAssured in AutoConfigureRestDocs' javadoc #22911
Document how to discover the HTTP Port at Runtime for both Servlet and Reactive web apps #22900
Document that spring-boot-configuration-processor cannot detect default value defined externally #22891
Document that application.conf is not read by default when using the Cassandra auto-configuration #22889
Fix wrong reference in ReadinessStateHealthIndicator javadoc #22846
Docs say Health's inner details section may contain components #22775
Recommend the use of AopTestUtils.getTargetObject() when setting expectations on a spied bean that Spring has proxied #22759
Document that schema.sql and data.sql will still be run when using Flyway or Liquibase but discourage their use #22749
Fix broken links to Micrometer registry docs #22707
Document properties to enable probe health indicators #22697
Document how to use Gradle's native bom support as an alternative to the dependency management plugin #22678
Document how to opt back in to DataSource auto-configuration when using R2DBC #22677
Clarify documentation on use of @AutoConfigureRestDocs with WebTestClient #22670
Document Spring Data Neo4j 6 support #22652
Update metrics documentation to note the benefits of using a MeterBinder when registering a metric that relies on other beans #22630
Include a hint where to find documentation for DevTools in docs overview #22623
Add ElasticsearchReactiveHealthIndicator to docs #22619
Fix link to Elasticsearch health indicator #22618
Link to App Engine Standard sample not working #22609
Improve documentation about swapping one technical starter for another #22597
Document how to use MongoClientSettingsBuilderCustomizer #22590
Document the need for configuration files to have a file extension #22588
Document that java.util.Optional is not recommended with ConfigurationProperties #22575
Typo in metadata for "management.health.readinessstate.enabled" #22561
Overhaul "externalized configuration" documentation #22521
Update the documentation to avoid trivialising what the reader's learning about #22411
Restructure "Building Container Images" section #22360
Clarify the effect of ordering auto-configuration #22340
Update documentation to reflect the web server now being started immediately before the ContextRefreshedEvent is published #22316
Fix dead link url and name of the STS download link #22274
Clarify locations inside and outside the jar from which properties are loaded #22265
Rename NoneOfNestedConditions to NoneNestedConditions in example docs #22247
Update metadata for WebFlux time and date-time properties to offer iso-offset as a suggested value #22174
Add package info for org.springframework.boot.autoconfigure.elasticsearch.rest #22173
Update layers.idx file example in docs #22152

🔨 Dependency Upgrades

Upgrade to Selenium HtmlUnit 2.43.1 #22937
Upgrade to Micrometer 1.5.4 #22936
Upgrade to Flyway 6.5.4 #22935
Upgrade to Spring HATEOAS 1.2.0-M1 #22893
Upgrade to Spring Batch 4.3.0-M2 #22892
Upgrade to Versions Maven Plugin 2.8.1 #22884
Upgrade to Selenium HtmlUnit 2.43.0 #22883
Upgrade to Pooled JMS 1.1.2 #22882
Upgrade to Maven Resources Plugin 3.2.0 #22881
Upgrade to Lettuce 5.3.3.RELEASE #22880
Upgrade to Kotlin Coroutines 1.3.8 #22879
Upgrade to HtmlUnit 2.43.0 #22878
Upgrade to Hibernate 5.4.20.Final #22877
Upgrade to Dropwizard Metrics 4.1.12.1 #22876
Upgrade to Dependency Management Plugin 1.0.10.RELEASE #22875
Upgrade to Mockito 3.4.6 #22838
Upgrade to Tomcat 9.0.37 #22818
Upgrade to SQLite JDBC 3.32.3.2 #22817
Upgrade to Spring HATEOAS 1.1.1.RELEASE #22816
Upgrade to Solr 8.5.2 #22815
Upgrade to SendGrid 4.6.3 #22814
Upgrade to Netty 4.1.51.Final #22812
Upgrade to MySQL 8.0.21 #22811
Upgrade to MongoDB 4.1.0 #22810
Upgrade to Micrometer 1.5.3 #22809
Upgrade to Maven War Plugin 3.3.1 #22808
Upgrade to MariaDB 2.6.2 #22807
Upgrade to Liquibase 3.10.2 #22806
Upgrade to Spring AMQP 2.3.0-M2 #22761
Upgrade to RSocket 1.1.0-M1 #22751
Upgrade to Spring Kafka 2.6.0-M1 #22730
Upgrade to Spring Integration 5.4.0-M2 #22729
Upgrade to Couchbase Client 3.0.7 #22688
Upgrade to Spring Security 5.4.0-RC1 #22668
Upgrade to Reactor 2020.0.0-M2 #22667
Upgrade to Elasticsearch 7.8.1 #22648
Upgrade to Spring Data 2020.0.0-M2 #22647
Upgrade to Spring Framework 5.3.0-M2 #22640
Upgrade to Groovy 2.5.13 #22527
Upgrade to R2DBC Arabba-SR6 #22395
Upgrade to Infinispan 11.0.1.Final #22286
Upgrade to Maven Shade Plugin 3.2.4 #22228

:heart: Contributors

We'd like to thank all the contributors who worked on this release!