Consul config fails unless setting spring.cloud.config.discovery.enabled=true

[fmartinou]

Hi,

I'm trying to migrate:

• from Spring Boot 2.4.5 + Spring Cloud 2020.0.1
• to Spring Boot 2.5.2 + Spring Cloud 2020.0.3

It appears that now unless I explicitely set spring.cloud.config.discovery.enabled=true, Consul config fails because it gets a null ConsulClient Bean.

10:22:03.476 [main] DEBUG org.springframework.boot.diagnostics.LoggingFailureAnalysisReporter - Application failed to start due to an exception
org.springframework.boot.context.config.ConfigDataResourceNotFoundException: Config data resource '[ConsulConfigDataResource@584f54e6 context = 'config/application,dev/', optional = true, properties = [ConsulConfigProperties@5d8bafa9 enabled = true, prefixes = list['config'], defaultContext = 'application', profileSeparator = ',', format = KEY_VALUE, dataKey = 'data', aclToken = [null], watch = [ConsulConfigProperties.Watch@576f63f6 waitTime = 55, enabled = true, delay = 1000], failFast = true, name = 'application'], profile = 'dev']' via location 'consul:localhost:8500' cannot be found
    at org.springframework.boot.context.config.ConfigDataResourceNotFoundException.withLocation(ConfigDataResourceNotFoundException.java:97)
    at org.springframework.boot.context.config.ConfigDataImporter.handle(ConfigDataImporter.java:145)
    at org.springframework.boot.context.config.ConfigDataImporter.load(ConfigDataImporter.java:136)
    at org.springframework.boot.context.config.ConfigDataImporter.resolveAndLoad(ConfigDataImporter.java:86)
    at org.springframework.boot.context.config.ConfigDataEnvironmentContributors.withProcessedImports(ConfigDataEnvironmentContributors.java:121)
    at org.springframework.boot.context.config.ConfigDataEnvironment.processWithProfiles(ConfigDataEnvironment.java:311)
    at org.springframework.boot.context.config.ConfigDataEnvironment.processAndApply(ConfigDataEnvironment.java:232)
    at org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor.postProcessEnvironment(ConfigDataEnvironmentPostProcessor.java:102)
    at org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor.postProcessEnvironment(ConfigDataEnvironmentPostProcessor.java:94)
    at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEnvironmentPreparedEvent(EnvironmentPostProcessorApplicationListener.java:102)
    at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEvent(EnvironmentPostProcessorApplicationListener.java:87)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131)
    at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:82)
    at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared$2(SpringApplicationRunListeners.java:63)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
    at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:117)
    at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:111)
    at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:62)
    at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:374)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:332)
    at com.lyra.payapp.vulcain.sample.SampleApplication.main(SampleApplication.java:17)
Caused by: org.springframework.cloud.consul.config.ConsulPropertySources$PropertySourceNotFoundException: java.lang.IllegalArgumentException: Property source must not be null
    at org.springframework.cloud.consul.config.ConsulPropertySources.createPropertySource(ConsulPropertySources.java:143)
    at org.springframework.cloud.consul.config.ConsulConfigDataLoader.doLoad(ConsulConfigDataLoader.java:66)
    at org.springframework.cloud.consul.config.ConsulConfigDataLoader.load(ConsulConfigDataLoader.java:57)
    at org.springframework.cloud.consul.config.ConsulConfigDataLoader.load(ConsulConfigDataLoader.java:38)
    at org.springframework.boot.context.config.ConfigDataLoaders.load(ConfigDataLoaders.java:107)
    at org.springframework.boot.context.config.ConfigDataImporter.load(ConfigDataImporter.java:128)
    ... 21 common frames omitted
Caused by: java.lang.IllegalArgumentException: Property source must not be null
    at org.springframework.util.Assert.notNull(Assert.java:201)
    at org.springframework.core.env.PropertySource.<init>(PropertySource.java:76)
    at org.springframework.core.env.EnumerablePropertySource.<init>(EnumerablePropertySource.java:53)
    at org.springframework.cloud.consul.config.ConsulPropertySource.<init>(ConsulPropertySource.java:56)
    at org.springframework.cloud.consul.config.ConsulPropertySources.create(ConsulPropertySources.java:154)
    at org.springframework.cloud.consul.config.ConsulPropertySources.createPropertySource(ConsulPropertySources.java:134)
    ... 26 common frames omitted

I don't understand why this property is becoming required?

My issue seems to be related to this commit (the method isDiscoveryEnabled is returning false)

[fmartinou]

Hi,

Any news on this?

[fmartinou]

Hi, any news on this?

[fmartinou]

I may have found the culprit; I just removed the direct dependency spring-cloud-starter-config and the bug went away 🤔