Caused by: java.lang.IllegalArgumentException: Token (spring.cloud.vault.token) must not be empty - Hashicorp Vault

Question

I'm following Vault Configuration example referring from: https://spring.io/guides/gs/vault-config/. When I am executing the code I am getting below error.

Error:

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'vaultPropertySourceLocator' defined in class path resource [org/springframework/cloud/vault/config/VaultBootstrapPropertySourceConfiguration.class]: Unsatisfied dependency expressed through method 'vaultPropertySourceLocator' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'vaultTemplate' defined in class path resource [org/springframework/cloud/vault/config/VaultBootstrapConfiguration.class]: Unsatisfied dependency expressed through method 'vaultTemplate' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'vaultSessionManager' defined in class path resource [org/springframework/cloud/vault/config/VaultBootstrapConfiguration.class]: Unsatisfied dependency expressed through method 'vaultSessionManager' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'clientAuthentication' defined in class path resource [org/springframework/cloud/vault/config/VaultBootstrapConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.vault.authentication.ClientAuthentication]: Factory method 'clientAuthentication' threw exception; nested exception is java.lang.IllegalArgumentException: Token (spring.cloud.vault.token) must not be empty
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:769) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:509) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1288) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1127) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:538) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:846) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:863) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
    at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:139) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
    at org.springframework.cloud.bootstrap.BootstrapApplicationListener.bootstrapServiceContext(BootstrapApplicationListener.java:191) [spring-cloud-context-2.1.0.RC2.jar:2.1.0.RC2]
    at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:105) [spring-cloud-context-2.1.0.RC2.jar:2.1.0.RC2]
    at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:71) [spring-cloud-context-2.1.0.RC2.jar:2.1.0.RC2]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) [spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) [spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) [spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127) [spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:75) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
    at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:54) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
    at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:347) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:306) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]
    at com.example.GsVaultConfigApplication.main(GsVaultConfigApplication.java:17) [classes/:na]
Caused by: java.lang.IllegalArgumentException: Token (spring.cloud.vault.token) must not be empty
    at org.springframework.util.Assert.hasText(Assert.java:284) ~[spring-core-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.cloud.vault.config.ClientAuthenticationFactory.createClientAuthentication(ClientAuthenticationFactory.java:108) ~[spring-cloud-vault-config-2.1.0.RC1.jar:2.1.0.RC1]
    at org.springframework.cloud.vault.config.VaultBootstrapConfiguration.clientAuthentication(VaultBootstrapConfiguration.java:206) ~[spring-cloud-vault-config-2.1.0.RC1.jar:2.1.0.RC1]
    at org.springframework.cloud.vault.config.VaultBootstrapConfiguration$$EnhancerBySpringCGLIB$$f6715ca8.CGLIB$clientAuthentication$2(<generated>) ~[spring-cloud-vault-config-2.1.0.RC1.jar:2.1.0.RC1]
    at org.springframework.cloud.vault.config.VaultBootstrapConfiguration$$EnhancerBySpringCGLIB$$f6715ca8$$FastClassBySpringCGLIB$$78ac2bde.invoke(<generated>) ~[spring-cloud-vault-config-2.1.0.RC1.jar:2.1.0.RC1]
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    at org.springframework.cloud.vault.config.VaultBootstrapConfiguration$$EnhancerBySpringCGLIB$$f6715ca8.clientAuthentication(<generated>) ~[spring-cloud-vault-config-2.1.0.RC1.jar:2.1.0.RC1]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_162]
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_162]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_162]
    at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_162]
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]
    ... 73 common frames omitted

MyConfiguration.java

@Data
@ConfigurationProperties("example")
public class MyConfiguration {
    private String username;
    private String password;
}

GsVaultConfigApplication.java

@SpringBootApplication
@EnableConfigurationProperties(MyConfiguration.class)
public class GsVaultConfigApplication implements CommandLineRunner{

    public static void main(String[] args) {
        SpringApplication.run(GsVaultConfigApplication.class, args);
    }

    private final MyConfiguration configuration;

    public GsVaultConfigApplication(MyConfiguration configuration) {
        this.configuration = configuration;
    }

    @Override
    public void run(String... args) throws Exception {
        Logger LOGGER = LoggerFactory.getLogger(GsVaultConfigApplication.class);
        LOGGER.info("----------------------------------------");
        LOGGER.info("Configuration properties");
        LOGGER.info("        example.username is {}", configuration.getUsername());
        LOGGER.info("        example.password is {}", configuration.getPassword());
        LOGGER.info("----------------------------------------");
    }
}

application.properties

spring.application.name=gs-vault-config
spring.cloud.vault.token=00000000-0000-0000-0000-000000000000
spring.cloud.vault.scheme=http
spring.cloud.vault.kv.enabled=true

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.1.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>gs-vault-config</artifactId>
    <version>1.0</version>
    <name>gs-vault-config</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.RC2</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-vault-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
        </repository>
    </repositories>
</project>

Answer 1

Spring Cloud Configuration integrations use the bootstrap context for their configuration. Bootstrap context is configured before spinning up the application context so configuration integrations can load and initialize PropertySources that are then used in the application context.

As a consequence, rename your application.properties to bootstrap.properties.