HotSwapAgent doesn't reload resource files on change

[ahmedak]

My setup:

Software	Version
JDK	1.8.0_144
DCEVM	8u144
HA	1.1.0-SNAPSHOT
Tomcat	7.0.5

VM arguments in CATALINA_OPTS is

agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n
-XXaltjvm=dcevm -javaagent:D:\hotswap\hotswap-agent-1.1.0-SNAPSHOT.jar 
-XX:TraceRedefineClasses=1

watchResources in hotswap-agent.properties is set as:

D:/workspace/services-project1/src/main/resources; \
D:/workspace/services-project2/src/main/resources; \
...

I'm running my web application on a standalone Tomcat server, and debugging via Eclipse. Class redefinition works great, and has been a huge time saver.

In case of resource files, I see messages on the console like

HOTSWAP AGENT: 18:21:40.952 INFO (org.hotswap.agent.watch.nio.TreeWatcherNIO) - Registering 
directory target D:\workspace\services-project1\src\main\resources via watched: D:\workspace\
services-project1\src\main\resources

But resource files like .properties and .xml files don't reload on change. Please help me figure out what's going wrong.

[theigl]

I had a similar issue in my Spring Boot app. For some reason, it worked when I added my resource folder to the classpath like this:

extraClasspath=$MY_PROJECT_ROOT/src/main/resources;

[skybber]

If the .properties or .xml file are configuration of your application (not Spring etc.), then don't expect it will be reloaded - there must be additional supporting mechanism like clear already read configuration structures etc. What kind of .properties .xml are you meaning?

[ahmedak]

I'm trying to hotswap messages.properties, and xml files which have validator groups, of the Spring application

[privatejava]

I too have this issue in my simple Spring Boot Application.
My commandline args for running application:

# mvn spring-boot:run -Dspring-boot.run.jvmArguments='-XXaltjvm=dcevm -javaagent:$HOTSWAP_LIB/hotswap-agent-1.3.0.jar=autoHotswap=true'

And my hotswap-agent.properties is like below

extraClasspath=src/main/resources, target/classes
watchResources=src/main/resources
disabledPlugins=
autoHotswap=true
spring.basePackagePrefix=
LOGGER=debug

I can see in the log

Registering resource listener on classpath URI HOTSWAP AGENT: 18:03:51.745 DEBUG (org.hotswap.agent.annotation.handler.WatchHandler) - Registering resource listener on classpath URI file:/home/ngm/NetBeansProjects/ocr/src/main/resources/
HOTSWAP AGENT: 18:03:51.747 DEBUG (org.hotswap.agent.watch.nio.WatcherNIO2) - Registering directory  /home/ngm/NetBeansProjects/ocr/src/main/resources
HOTSWAP AGENT: 18:03:51.756 DEBUG (org.hotswap.agent.annotation.handler.WatchHandler) - Registering resource listener on classpath URI file:/home/ngm/NetBeansProjects/ocr/target/classes/
HOTSWAP AGENT: 18:03:51.757 DEBUG (org.hotswap.agent.watch.nio.WatcherNIO2) - Registering directory  /home/ngm/NetBeansProjects/ocr/target/classes

and when i do any edits on my static files i get

HOTSWAP AGENT: 18:04:07.653 DEBUG (org.hotswap.agent.watch.nio.WatcherNIO2) - Watch event 'ENTRY_MODIFY' on '/home/ngm/NetBeansProjects/ocr/src/main/resources/templates/index.html' --> index.html
HOTSWAP AGENT: 18:04:07.659 DEBUG (org.hotswap.agent.watch.nio.WatcherNIO2) - Watch event 'ENTRY_MODIFY' on '/home/ngm/NetBeansProjects/ocr/target/classes/templates/index.html' --> index.html
HOTSWAP AGENT: 18:04:07.659 DEBUG (org.hotswap.agent.watch.nio.WatcherNIO2) - Watch event 'ENTRY_MODIFY' on '/home/ngm/NetBeansProjects/ocr/target/classes/templates/index.html' --> index.html

So , I guess watching the resources are working but when we start to refresh the page to see the updated index.html it is still showing same old one.

Thanks

[privatejava]

I think i found the resources are working back again. I used netbeans to do this . The commandline that nebeans used was :

cd /home/ngm/NetBeansProjects/ocr; JAVA_HOME=/usr/lib/jvm/java-8-oracle /home/ngm/netbeans-8.1/java/maven/bin/mvn "-Dexec.args=-XXaltjvm=dcevm -javaagent:/home/ngm/Downloads/hotswap-agent-1.3.0.jar=autoHotswap=true -classpath %classpath np.com.ngopal.ocr.OcrApplication" -Dexec.executable=/usr/lib/jvm/java-8-oracle/bin/java org.codehaus.mojo:exec-maven-plugin:1.5.0:exec

After i changed the index.html i got

HOTSWAP AGENT: 11:40:49.043 DEBUG (org.hotswap.agent.watch.nio.WatcherNIO2) - Watch event 'ENTRY_MODIFY' on '/home/ngm/NetBeansProjects/ocr/src/main/resources/templates/index.html' --> index.html
HOTSWAP AGENT: 11:40:49.051 DEBUG (org.hotswap.agent.watch.nio.WatcherNIO2) - Watch event 'ENTRY_MODIFY' on '/home/ngm/NetBeansProjects/ocr/target/classes/templates/index.html' --> index.html
HOTSWAP AGENT: 11:40:49.051 DEBUG (org.hotswap.agent.watch.nio.WatcherNIO2) - Watch event 'ENTRY_MODIFY' on '/home/ngm/NetBeansProjects/ocr/target/classes/templates/index.html' --> index.html

and it quickly updated so fast and I am loving it. It was not working before but now it is working. I don't know why.
May be i had deleted /target directory to clean and build it as fresh.

[ahmedak]

Thanks @privatejava!