Spring Cloud Stream Configuration classes are not being loaded - spring-boot

Question

After updating from Spring Boot 2.0.6 / Spring Cloud Finchley.RELEASE to Spring Boot 2.1.3 / Spring Cloud Greenwich.SR1, I am experiencing a very odd configuration / component scanning issue.
The application is structured as follows:
main-application
messaging-lib
commons-lib
Main application is annotated with #SpringBootApplication(scanBasePackages = {"com.app.libs", "com.app"}), where the com.app packages are those under the main-application, while com.app.libs are the packages of the libs.
The commons-lib configuration which is simply a framework-esque library has the following main configuration entrypoint:
package com.app.libs.commons
#Target(ElementType.TYPE)
#Retention(RetentionPolicy.RUNTIME)
#Documented
#Inherited
#Import(CommonsConfiguration.class)
public #interface EnableCommons {
}
With CommonsConfiguration having:
package com.app.libs.commons.config
#Configuration
#ConditionalOnProperty(value = "com.app.config.commons", matchIfMissing = true)
#ComponentScan(basePackages = "com.app.libs.commons")
public class FrameworkConfiguration {
This way, I can basically annotate a single configuration class in my main-application and have it pick up common beans.
The messaging-lib configuration which uses Spring Cloud Stream has the following configurations:
#Configuration
#Import({ CustomBinding.class })
#PropertySource("classpath:kafka.properties")
#EnableBinding(Source.class)
#EnableAutoConfiguration
public class BindingConfiguration {
}
The cloud stream configuration is as follows:
spring.cloud.stream.bindings.output.destination=${spring.application.name}
spring.cloud.stream.kafka.bindings.output.producer.sync=true
spring.cloud.stream.default.group=${spring.application.name}
spring.cloud.stream.default.producer.partitionCount=9
spring.cloud.stream.default.producer.partitionKeyExpression=headers.entityId
spring.cloud.stream.kafka.binder.autoAddPartitions=true
spring.cloud.stream.kafka.binder.autoCreateTopics=false
When starting the application, the following error message is produced:
***************************
APPLICATION FAILED TO START
***************************
Description:
Failed to bind properties under 'spring.cloud.stream.default.producer.partition-key-expression' to org.springframework.expression.Expression:
Property: spring.cloud.stream.default.producer.partitionkeyexpression
Value: headers.entityId
Origin: "spring.cloud.stream.default.producer.partitionKeyExpression" from property source "class path resource [kafka.properties]"
Reason: No converter found capable of converting from type [java.lang.String] to type [#com.fasterxml.jackson.databind.annotation.JsonSerialize org.springframework.expression.Expression]
Action:
Update your application's configuration
After some looking through the source code, I've noticed that the SpelConverter in question is the one that is supposed to be initialized in SpelExpressionConverterConfiguration. Indeed, if I add #Import({ SpelExpressionConverterConfiguration.class }) or #Import({ BindingServiceConfiguration }) (the #Configuration class that imports the SpelExpressionConverterConfiguration) to my BindingConfiguration, the converter seems to get initialized. However, another error is then produced:
***************************
APPLICATION FAILED TO START
***************************
Description:
A component required a bean of type 'org.springframework.messaging.core.DestinationResolver' that could not be found.
The following candidates were found but could not be injected:
- Bean method 'binderAwareChannelResolver' in 'BindingServiceConfiguration' not loaded because #ConditionalOnBean (types: org.springframework.cloud.stream.binder.BinderTypeRegistry; SearchStrategy: current) did not find any beans of type org.springframework.cloud.stream.binder.BinderTypeRegistry
Action:
Consider revisiting the entries above or defining a bean of type 'org.springframework.messaging.core.DestinationResolver' in your configuration.
I'm not quite sure what seems to be going on. When debugging, it seems that both BindingBeansRegistrar and BinderFactoryConfiguration (the classes imported through #EnableBinding) are loaded - yet no scanning occurs and the rest of the component scanning simply does not seem to happen.
I've tried importing the configuration classes and/or scanning the packages myself, but in both cases I am still missing the DestinationResolver bean, although it should have been initialized.
I've noted that, prior to the update, there were also some issues: I had to import BindingServiceConfiguration, BinderFactoryConfiguration, and SpelExpressionConverterConfiguration manually as well.
Would anybody have pointers as to what could be causing this issue?
EDIT: Here are the build.grade files (some includes are omitted for brevity):
Application build.gradle
apply from: new File(project(':scripts').projectDir, '/service-impl.gradle')
dependencies {
implementation project(':dependency-A')
implementation project(':dependency-B')
implementation project(':messaging-library')
testImplementation 'org.springframework.cloud:spring-cloud-stream-test-support'
}
service-impl.gradle contents:
buildscript {
apply from: new File(project(':buildscripts').projectDir, '/repositories.gradle') // Repository definitions
apply from: new File(project(':buildscripts').projectDir, '/dm-boot.gradle') // DM via spring boot plugin
apply from: new File(project(':buildscripts').projectDir, '/dm-versions.gradle') // DM versions
}
configurations {
all*.exclude module: 'spring-boot-starter-tomcat'
all*.exclude group: 'org.apache.bval'
}
artifacts {
archives bootJar
}
dependencies {
compileOnly 'org.projectlombok:lombok'
compile 'org.springframework.boot:spring-boot-starter'
compile 'org.springframework.boot:spring-boot-starter-web'
compile 'org.springframework.boot:spring-boot-starter-jetty'
compile 'org.springframework.boot:spring-boot-starter-actuator'
compile 'org.springframework.boot:spring-boot-starter-cache'
compile 'org.springframework.cloud:spring-cloud-starter-netflix-eureka-client'
compile 'org.springframework.cloud:spring-cloud-starter-config'
testCompile 'junit:junit'
testCompile 'org.springframework.boot:spring-boot-starter-test'
testCompileOnly 'org.projectlombok:lombok'
compile 'net.logstash.logback:logstash-logback-encoder'
}
Commons Library build.gradle
apply from: new File(project(':buildscripts').projectDir, '/repositories.gradle') // Repository definitions
apply from: new File(project(':buildscripts').projectDir, '/dm-plain.gradle') // DM via spring boot plugin
apply from: new File(project(':buildscripts').projectDir, '/dm-versions.gradle') // DM versions
dependencies {
api 'com.restfb:restfb:2.3.0'
api 'commons-io:commons-io'
implementation 'com.jcraft:jsch:0.1.54'
//lombok
compileOnly 'org.projectlombok:lombok'
//spring
implementation 'org.springframework.boot:spring-boot-starter-web'
implementation 'org.springframework.boot:spring-boot-starter-jetty'
implementation 'org.springframework.boot:spring-boot-starter-security'
api 'org.springframework.security:spring-security-core'
api 'org.springframework.security:spring-security-web'
api 'org.springframework:spring-jdbc'
api 'org.springframework.boot:spring-boot-starter-actuator'
//thrift modules
compileOnly 'com.facebook.swift:swift-codec'
compileOnly 'com.facebook.swift:swift-service'
//db modules
api 'org.postgresql:postgresql'
api 'org.flywaydb:flyway-core'
api 'com.zaxxer:HikariCP'
api 'org.jooq:jooq'
//embedded pg modules
compileOnly 'com.opentable.components:otj-pg-embedded'
api group: 'net.minidev', name: 'json-smart', version: '2.2.1'
api group: 'org.json', name: 'json', version: '20140107'
//tests
testImplementation 'junit:junit'
testImplementation 'org.springframework.boot:spring-boot-starter-test'
testImplementation 'com.opentable.components:otj-pg-embedded'
testImplementation 'org.springframework.security:spring-security-core'
testImplementation 'org.springframework.security:spring-security-web'
testImplementation 'org.springframework.security:spring-security-config'
testImplementation 'org.springframework:spring-jdbc'
testImplementation 'org.springframework.boot:spring-boot-starter-actuator'
testImplementation 'org.apache.sshd:sshd-core:1.7.0' // sftpFileTransfer testing - embedded sftp server
testCompileOnly 'org.projectlombok:lombok'
testCompileOnly 'javax.servlet:javax.servlet-api'
}
Messaging Lib build.gradle (used as a standalone lib, hence does not use the above .gradle files)
buildscript {
ext {
springBootVersion = '2.1.3.RELEASE'
}
repositories {
mavenCentral()
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
}
}
apply from: new File(rootDir.parentFile, 'buildscripts/publish.gradle')
apply from: new File(rootDir.parentFile, 'buildscripts/coverage.gradle')
apply plugin: 'java'
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'
group = 'com.app.libs.messaging'
version = '0.0.3'
sourceCompatibility = 1.8
targetCompatibility = 1.8
repositories {
mavenCentral()
maven { url "https://repo.spring.io/snapshot" }
maven { url "https://repo.spring.io/milestone" }
}
ext {
springCloudVersion = 'Greenwich.SR1'
jacksonVersion = '2.9.6'
lombokVersion = '1.16.18'
jooqVersion = '3.11.2'
flywayVersion = '5.2.1'
}
dependencies {
compile 'org.aspectj:aspectjweaver'
compile 'org.springframework:spring-tx'
compile 'org.springframework.cloud:spring-cloud-stream'
compile 'org.springframework.cloud:spring-cloud-stream-binder-kafka'
compile 'org.apache.commons:commons-lang3:3.5'
compile 'org.javassist:javassist:3.22.0-GA'
compile "org.flywaydb:flyway-core:${flywayVersion}"
compileOnly "org.jooq:jooq:${jooqVersion}"
compileOnly "org.projectlombok:lombok:${lombokVersion}"
testCompileOnly "org.projectlombok:lombok:${lombokVersion}"
testCompile 'org.springframework.boot:spring-boot-starter-test'
testCompile 'org.springframework.boot:spring-boot-starter-json'
testCompile 'org.springframework.cloud:spring-cloud-stream-test-support'
testCompile "com.fasterxml.jackson.core:jackson-core:${jacksonVersion}"
testCompile "com.fasterxml.jackson.core:jackson-databind:${jacksonVersion}"
testCompile 'junit:junit:4.12'
testCompile "org.jooq:jooq:${jooqVersion}"
testCompile "org.flywaydb:flyway-core:${flywayVersion}"
testCompile 'org.postgresql:postgresql:42.2.2'
testCompile 'com.opentable.components:otj-pg-embedded:0.13.0'
testCompile 'org.springframework:spring-jdbc'
}
dependencyManagement {
// disable maven exclusion to enhance gradle import performance
// https://github.com/spring-gradle-plugins/dependency-management-plugin/issues/153
applyMavenExclusions = false
imports {
mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
}
}
jar.enabled = true
bootJar.enabled = false
I've tried to omit any files that I think should be unrelated.