quarkus: Unable to copy .env file in dev mode

Describe the bug The .env file for environment variables at project root can’t be used on Windows 10. When creating this file and running mvnw quarkus:dev it produces a warning in the log and the environment variables are not used by quarkus. Expected behavior I can define environment variables in .env file and use it in application.properties like this: greeting.message = ${MESSAGE}

Actual behavior A warning and exception is printed to the console:

Listening for transport dt_socket at address: 5005
__  ____  __  _____   ___  __ ____  ______ 
 --/ __ \/ / / / _ | / _ \/ //_/ / / / __/
 -/ /_/ / /_/ / __ |/ , _/ ,< / /_/ /\ \
--\___\_\____/_/ |_/_/|_/_/|_|\____/___/
2020-03-31 12:12:54,098 WARN  [io.qua.dev.DevModeMain] (main) Unable to copy .env file
2020-03-31 12:12:57,080 ERROR [io.qua.application] (main) Failed to start application: java.util.NoSuchElementException: Property MESSAGE not found
        at io.smallrye.config.SmallRyeConfig.propertyNotFound(SmallRyeConfig.java:209)
        at io.smallrye.config.SmallRyeConfig.getValue(SmallRyeConfig.java:96)
        at io.smallrye.config.SmallRyeConfig.getValue(SmallRyeConfig.java:80)
        at io.quarkus.runtime.configuration.ConfigExpander.accept(ConfigExpander.java:55)
        at io.quarkus.runtime.configuration.ConfigExpander.accept(ConfigExpander.java:15)
        at org.wildfly.common.expression.ExpressionNode.emit(ExpressionNode.java:42)
        at org.wildfly.common.expression.Expression.evaluateException(Expression.java:75)
        at org.wildfly.common.expression.Expression.evaluate(Expression.java:89)
        at io.quarkus.runtime.configuration.ExpandingConfigSource.expandValue(ExpandingConfigSource.java:101)
        at io.quarkus.runtime.configuration.ExpandingConfigSource.expand(ExpandingConfigSource.java:69)   
        at io.quarkus.runtime.configuration.ExpandingConfigSource.getValue(ExpandingConfigSource.java:47) 
        at io.quarkus.runtime.configuration.DeploymentProfileConfigSource.getValue(DeploymentProfileConfigSource.java:80)
        at io.smallrye.config.SmallRyeConfig.getRawValue(SmallRyeConfig.java:121)
        at io.smallrye.config.SmallRyeConfig.getValue(SmallRyeConfig.java:84)
        at io.smallrye.config.SmallRyeConfig.getOptionalValue(SmallRyeConfig.java:131)
        at io.quarkus.arc.runtime.ConfigRecorder.validateConfigProperties(ConfigRecorder.java:35)
        at io.quarkus.deployment.steps.ConfigBuildStep$validateConfigProperties24.deploy_0(ConfigBuildStep$validateConfigProperties24.zig:120)
        at io.quarkus.deployment.steps.ConfigBuildStep$validateConfigProperties24.deploy(ConfigBuildStep$validateConfigProperties24.zig:36)
        at io.quarkus.runner.ApplicationImpl.doStart(ApplicationImpl.zig:154)
        at io.quarkus.runtime.Application.start(Application.java:90)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at io.quarkus.runner.bootstrap.StartupActionImpl.run(StartupActionImpl.java:99)
        at io.quarkus.dev.IsolatedDevModeMain.firstStart(IsolatedDevModeMain.java:60)
        at io.quarkus.dev.IsolatedDevModeMain.accept(IsolatedDevModeMain.java:236)
        at io.quarkus.dev.IsolatedDevModeMain.accept(IsolatedDevModeMain.java:39)
        at io.quarkus.bootstrap.app.CuratedApplication.runInCl(CuratedApplication.java:131)
        at io.quarkus.bootstrap.app.CuratedApplication.runInAugmentClassLoader(CuratedApplication.java:84)
        at io.quarkus.dev.DevModeMain.start(DevModeMain.java:113)
        at io.quarkus.dev.DevModeMain.main(DevModeMain.java:54)

2020-03-31 12:12:57,111 ERROR [io.qua.dev.DevModeMain] (main) Failed to start Quarkus: java.lang.RuntimeException: Failed to start quarkus
        at io.quarkus.runner.ApplicationImpl.doStart(ApplicationImpl.zig:232)
        at io.quarkus.runtime.Application.start(Application.java:90)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at io.quarkus.runner.bootstrap.StartupActionImpl.run(StartupActionImpl.java:99)
        at io.quarkus.dev.IsolatedDevModeMain.firstStart(IsolatedDevModeMain.java:60)
        at io.quarkus.dev.IsolatedDevModeMain.accept(IsolatedDevModeMain.java:236)
        at io.quarkus.dev.IsolatedDevModeMain.accept(IsolatedDevModeMain.java:39)
        at io.quarkus.bootstrap.app.CuratedApplication.runInCl(CuratedApplication.java:131)
        at io.quarkus.bootstrap.app.CuratedApplication.runInAugmentClassLoader(CuratedApplication.java:84)
        at io.quarkus.dev.DevModeMain.start(DevModeMain.java:113)
        at io.quarkus.dev.DevModeMain.main(DevModeMain.java:54)
Caused by: java.util.NoSuchElementException: Property MESSAGE not found
        at io.smallrye.config.SmallRyeConfig.propertyNotFound(SmallRyeConfig.java:209)
        at io.smallrye.config.SmallRyeConfig.getValue(SmallRyeConfig.java:96)
        at io.smallrye.config.SmallRyeConfig.getValue(SmallRyeConfig.java:80)
        at io.quarkus.runtime.configuration.ConfigExpander.accept(ConfigExpander.java:55)
        at io.quarkus.runtime.configuration.ConfigExpander.accept(ConfigExpander.java:15)
        at org.wildfly.common.expression.ExpressionNode.emit(ExpressionNode.java:42)
        at org.wildfly.common.expression.Expression.evaluateException(Expression.java:75)
        at org.wildfly.common.expression.Expression.evaluate(Expression.java:89)
        at io.quarkus.runtime.configuration.ExpandingConfigSource.expandValue(ExpandingConfigSource.java:101)
        at io.quarkus.runtime.configuration.ExpandingConfigSource.expand(ExpandingConfigSource.java:69)   
        at io.quarkus.runtime.configuration.ExpandingConfigSource.getValue(ExpandingConfigSource.java:47) 
        at io.quarkus.runtime.configuration.DeploymentProfileConfigSource.getValue(DeploymentProfileConfigSource.java:80)
        at io.smallrye.config.SmallRyeConfig.getRawValue(SmallRyeConfig.java:121)
        at io.smallrye.config.SmallRyeConfig.getValue(SmallRyeConfig.java:84)
        at io.smallrye.config.SmallRyeConfig.getOptionalValue(SmallRyeConfig.java:131)
        at io.quarkus.arc.runtime.ConfigRecorder.validateConfigProperties(ConfigRecorder.java:35)
        at io.quarkus.deployment.steps.ConfigBuildStep$validateConfigProperties24.deploy_0(ConfigBuildStep$validateConfigProperties24.zig:120)
        at io.quarkus.deployment.steps.ConfigBuildStep$validateConfigProperties24.deploy(ConfigBuildStep$validateConfigProperties24.zig:36)
        at io.quarkus.runner.ApplicationImpl.doStart(ApplicationImpl.zig:154)
        ... 13 more

To Reproduce Steps to reproduce the behavior:

git clone https://github.com/quarkusio/quarkus-quickstarts.git (tag: 1.3.1.Final)
go to config-quickstart directory
add a .env file in the config-quickstart directory, see below for the content
modify application.properties like below
run mvnw quarkus:dev

Configuration application.properties:

# Your configuration properties
greeting.message = ${MESSAGE}
greeting.name = quarkus

.env:

MESSAGE=hello

Screenshots (If applicable, add screenshots to help explain your problem.)

Environment (please complete the following information):

Output of uname -a or ver: Microsoft Windows [Version 10.0.18363.720]

Output of java -version:

openjdk version "1.8.0_232"
OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_232-b09)
OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.232-b09, mixed mode)

GraalVM version (if different from Java): not installed
Quarkus version or git rev: 1.3.1.Final

Build tool (ie. output of mvnw --version or gradlew --version):

Apache Maven 3.6.2 (40f52333136460af0dc0d7232c0dc0bcf0d9e117; 2019-08-27T17:06:16+02:00)
Maven home: C:\Users\Leon\.m2\wrapper\dists\apache-maven-3.6.2-bin\795eh28tki48bv3l67maojf0ra\apache-maven-3.6.2
Java version: 1.8.0_232, vendor: AdoptOpenJDK, runtime: C:\Program Files\AdoptOpenJDK\jdk-8.0.232.09-hotspot\jre
Default locale: de_DE, platform encoding: Cp1252
OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"

Additional context Feature was added in #7519

About this issue

Original URL
State: closed
Created 4 years ago
Reactions: 3
Comments: 24 (16 by maintainers)

Most upvoted comments

I can try, yes. It is rather unlikely that this would end up in 1.6.x, isn’t it?

famod on Jun 26, 2020

@geoand

What is the proper Windows alternative?

I just checked that on my private machine with Windows 10 Home (please don’t ask why it is not a Pro) and with Home you don’t even have secpol.msc so you cant even grant yourself the right to create symlinks. Again, please don’t ask. 😉

But I was able to create a link via:

mklink.exe /H <linkname> <target>

This will create a hard link, though. But AFAICS this would be a sufficient workaround. The code could fall back to mklink.exe on Windows if createSymbolicLink() fails (or we figure out how to check it up-front).

mklink should be available for all relevant Windows versions.

Btw, because of this issue DevMojoIT.testThatTheApplicationIsReloadedOnDotEnvConfigChange always fails on my private machine.

PS: Without any elevated rights you can also create a “directory junction” with mklink but I don’t see how that can be of real use here.

famod on Jun 26, 2020

Per default my windows user has not the permission to create symbolic links. To overcome this restriction i had to follow these steps:

Run secpol.msc
Go to Security Settings|Local Policies|User Rights Assignment|Create symbolic links
Add your user name
Restart your windows session

But I don’t think this is a good way to go. Preventing the usage of symbolic links would be better!

haraldatbmw on Apr 23, 2020