Currently running into an issue while trying to use GCP secret manager to hide okta-client-id and secret within the application.properties. The error as seen in the title reads ‘No converter found capable of converting from type [com.google.protobuf.ByteString$LiteralByteString] to type [java.lang.String]’. The stack trace can be found below. For more details, I am using spring boot (3.3.4), "com.okta.spring:okta-spring-boot-starter:3.0.7", and "com.google.cloud:spring-cloud-gcp-starter-secretmanager:5.7.0". You can also find the build.gradle below. This issue only occurs when using secret manager with okta environment properties, if I set a value from secret manager to any non okta property then there is no issue i.e test=${sm://okta-client-secret} works.
Stack Trace
org.springframework.core.convert.ConverterNotFoundException: No converter found capable of converting from type [com.google.protobuf.ByteString$LiteralByteString] to type [java.lang.String]
at org.springframework.core.convert.support.GenericConversionService.handleConverterNotFound(GenericConversionService.java:294)
at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:185)
at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:165)
at org.springframework.core.env.AbstractPropertyResolver.convertValueIfNecessary(AbstractPropertyResolver.java:265)
at org.springframework.boot.context.properties.source.ConfigurationPropertySourcesPropertyResolver.getProperty(ConfigurationPropertySourcesPropertyResolver.java:82)
at org.springframework.boot.context.properties.source.ConfigurationPropertySourcesPropertyResolver.getPropertyAsRawString(ConfigurationPropertySourcesPropertyResolver.java:71)
at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:153)
at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126)
at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:239)
at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:210)
at org.springframework.core.env.AbstractPropertyResolver.resolveNestedPlaceholders(AbstractPropertyResolver.java:230)
at org.springframework.boot.context.properties.source.ConfigurationPropertySourcesPropertyResolver.getProperty(ConfigurationPropertySourcesPropertyResolver.java:80)
at org.springframework.boot.context.properties.source.ConfigurationPropertySourcesPropertyResolver.getProperty(ConfigurationPropertySourcesPropertyResolver.java:61)
at org.springframework.core.env.AbstractEnvironment.getProperty(AbstractEnvironment.java:552)
at com.okta.spring.boot.oauth.env.OktaOAuth2PropertiesMappingEnvironmentPostProcessor.postProcessEnvironment(OktaOAuth2PropertiesMappingEnvironmentPostProcessor.java:115)
at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEnvironmentPreparedEvent(EnvironmentPostProcessorApplicationListener.java:109)
at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEvent(EnvironmentPostProcessorApplicationListener.java:94)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:185)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:178)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:156)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:138)
at org.springframework.boot.context.event.EventPublishingRunListener.multicastInitialEvent(EventPublishingRunListener.java:136)
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:81)
at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared$2(SpringApplicationRunListeners.java:64)
at java.base/java.lang.Iterable.forEach(Iterable.java:75)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:118)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:112)
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:63)
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:370)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:330)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1363)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1352)
at com.ga_residential.ga_residential_backend.GaResidentialBackendApplicationKt.main(GaResidentialBackendApplication.kt:13)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:50)
Process finished with exit code 0
build.gradle
plugins {
kotlin("jvm") version "1.9.25"
kotlin("plugin.spring") version "1.9.25"
kotlin("plugin.jpa") version "1.9.25"
id("org.springframework.boot") version "3.3.4"
id("io.spring.dependency-management") version "1.1.6"
}
group = "com.demo-oauth"
version = "0.0.1-SNAPSHOT"
java {
toolchain {
languageVersion = JavaLanguageVersion.of(21)
}
}
repositories {
mavenCentral()
}
dependencies {
implementation("org.springframework.boot:spring-boot-starter-thymeleaf")
implementation("org.springframework.boot:spring-boot-starter-web")
implementation("com.fasterxml.jackson.module:jackson-module-kotlin")
implementation("com.okta.spring:okta-spring-boot-starter:3.0.7")
implementation("io.github.wimdeblauwe:htmx-spring-boot-thymeleaf:3.5.0")
implementation("org.flywaydb:flyway-core")
implementation("org.flywaydb:flyway-database-postgresql")
implementation("org.jetbrains.kotlin:kotlin-reflect")
implementation("com.google.cloud:spring-cloud-gcp-starter-secretmanager:5.7.0")
runtimeOnly("org.postgresql:postgresql")
runtimeOnly("org.springframework.boot:spring-boot-devtools")
testImplementation("org.springframework.boot:spring-boot-starter-test")
testImplementation("org.jetbrains.kotlin:kotlin-test-junit5")
testRuntimeOnly("org.junit.platform:junit-platform-launcher")
}
kotlin {
compilerOptions {
freeCompilerArgs.addAll("-Xjsr305=strict")
}
}
tasks.withType<Test> {
useJUnitPlatform()
}