osx - Exception on reloading remote spring boot application with Intellij IDEA -

i'm trying setup remote spring-boot environment using spring devtools, docker , intellij. started article. unfortunately randomly fails exception. below configuration:

dockerfile

from        java:8  expose      8888  workdir     /app  add         build.gradle    /app/build.gradle add         gradlew         /app/gradlew add         gradle          /app/gradle  add         src             /app/src  run         ["chmod", "+x", "/app/gradlew"] 

docker-compose.yml

backend:   build: .   env_file: environment   ports:     - "8888:8888"   volumes:     - ./.gradle-docker:/root/.gradle   command: "/app/gradlew clean bootrun"   links:     - db  db:   image:  postgres:9.5.3   env_file: environment   ports:     - "5454:5432" 

the whole application started command line with: docker-compose build , docker-compose up commands.

in intellij i've prepared following java application configuration:

where docker:8888 ip of docker-machine , port used spring application. after configuration run following output:

/\\ / ___'_ __ _ _(_)_ __  __ _          ___               _      \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` |        | _ \___ _ __  ___| |_ ___ \ \ \ \ \\/  ___)| |_)| | | | | || (_| []::::::[]   / -_) '  \/ _ \  _/ -_) ) ) ) )  '  |____| .__|_| |_|_| |_\__, |        |_|_\___|_|_|_\___/\__\___|/ / / / =========|_|==============|___/===================================/_/_/_/ :: spring boot remote ::  (v1.3.5.release)  2016-07-06 12:48:51.997  info 17731 --- [           main] o.s.b.devtools.remotespringapplication   : starting remotespringapplication v1.3.5.release on opal-mac.local pid 17731 (/users/opal/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-devtools/1.3.5.release/ab035bdc1e6297ff4c8676edd93ed307b11353c2/spring-boot-devtools-1.3.5.release.jar started opal in /users/opal/projects/backend) 2016-07-06 12:48:52.013  info 17731 --- [           main] o.s.b.devtools.remotespringapplication   : no active profile set, falling default profiles: default 2016-07-06 12:48:52.106  info 17731 --- [           main] s.c.a.annotationconfigapplicationcontext : refreshing org.springframework.context.annotation.annotationconfigapplicationcontext@441772e: startup date [wed jul 06 12:48:52 cest 2016]; root of context hierarchy 2016-07-06 12:48:54.016  warn 17731 --- [           main] o.s.b.d.r.c.remoteclientconfiguration    : connection http://docker:8888 insecure. should use url starting 'https://'. 2016-07-06 12:48:54.419  warn 17731 --- [           main] o.s.b.d.a.optionallivereloadserver       : unable start livereload server 2016-07-06 12:48:54.499  info 17731 --- [           main] o.s.b.devtools.remotespringapplication   : started remotespringapplication in 3.793 seconds (jvm running 5.004) 

unfortunately after change made code, following exception occurs:

2016-07-06 12:49:29.141  info 17731 --- [   file watcher] o.s.b.d.r.c.classpathchangeuploader      : uploaded 1 class resource 2016-07-06 12:49:31.056  info 17731 --- [   file watcher] o.s.b.d.r.c.classpathchangeuploader      : uploaded 1 class resource exception in thread "file watcher" java.lang.illegalstateexception: java.net.connectexception: connection refused     @ org.springframework.boot.devtools.remote.client.classpathchangeuploader.onapplicationevent(classpathchangeuploader.java:107)     @ org.springframework.boot.devtools.remote.client.classpathchangeuploader.onapplicationevent(classpathchangeuploader.java:56)     @ org.springframework.context.event.simpleapplicationeventmulticaster.invokelistener(simpleapplicationeventmulticaster.java:166)     @ org.springframework.context.event.simpleapplicationeventmulticaster.multicastevent(simpleapplicationeventmulticaster.java:138)     @ org.springframework.context.support.abstractapplicationcontext.publishevent(abstractapplicationcontext.java:381)     @ org.springframework.context.support.abstractapplicationcontext.publishevent(abstractapplicationcontext.java:335)     @ org.springframework.boot.devtools.classpath.classpathfilechangelistener.publishevent(classpathfilechangelistener.java:68)     @ org.springframework.boot.devtools.classpath.classpathfilechangelistener.onchange(classpathfilechangelistener.java:64)     @ org.springframework.boot.devtools.filewatch.filesystemwatcher.firelisteners(filesystemwatcher.java:230)     @ org.springframework.boot.devtools.filewatch.filesystemwatcher.updatesnapshots(filesystemwatcher.java:223)     @ org.springframework.boot.devtools.filewatch.filesystemwatcher.scan(filesystemwatcher.java:183)     @ org.springframework.boot.devtools.filewatch.filesystemwatcher.access$100(filesystemwatcher.java:41)     @ org.springframework.boot.devtools.filewatch.filesystemwatcher$1.run(filesystemwatcher.java:150) caused by: java.net.connectexception: connection refused     @ java.net.plainsocketimpl.socketconnect(native method)     @ java.net.abstractplainsocketimpl.doconnect(abstractplainsocketimpl.java:350)     @ java.net.abstractplainsocketimpl.connecttoaddress(abstractplainsocketimpl.java:206)     @ java.net.abstractplainsocketimpl.connect(abstractplainsocketimpl.java:188)     @ java.net.sockssocketimpl.connect(sockssocketimpl.java:392)     @ java.net.socket.connect(socket.java:589)     @ java.net.socket.connect(socket.java:538)     @ sun.net.networkclient.doconnect(networkclient.java:180)     @ sun.net.www.http.httpclient.openserver(httpclient.java:432)     @ sun.net.www.http.httpclient.openserver(httpclient.java:527)     @ sun.net.www.http.httpclient.<init>(httpclient.java:211)     @ sun.net.www.http.httpclient.new(httpclient.java:308)     @ sun.net.www.http.httpclient.new(httpclient.java:326)     @ sun.net.www.protocol.http.httpurlconnection.getnewhttpclient(httpurlconnection.java:1169)     @ sun.net.www.protocol.http.httpurlconnection.plainconnect0(httpurlconnection.java:1105)     @ sun.net.www.protocol.http.httpurlconnection.plainconnect(httpurlconnection.java:999)     @ sun.net.www.protocol.http.httpurlconnection.connect(httpurlconnection.java:933)     @ org.springframework.http.client.simplebufferingclienthttprequest.executeinternal(simplebufferingclienthttprequest.java:80)     @ org.springframework.http.client.abstractbufferingclienthttprequest.executeinternal(abstractbufferingclienthttprequest.java:48)     @ org.springframework.http.client.abstractclienthttprequest.execute(abstractclienthttprequest.java:53)     @ org.springframework.http.client.interceptingclienthttprequest$interceptingrequestexecution.execute(interceptingclienthttprequest.java:93)     @ org.springframework.boot.devtools.remote.client.httpheaderinterceptor.intercept(httpheaderinterceptor.java:57)     @ org.springframework.http.client.interceptingclienthttprequest$interceptingrequestexecution.execute(interceptingclienthttprequest.java:85)     @ org.springframework.http.client.interceptingclienthttprequest.executeinternal(interceptingclienthttprequest.java:69)     @ org.springframework.http.client.abstractbufferingclienthttprequest.executeinternal(abstractbufferingclienthttprequest.java:48)     @ org.springframework.http.client.abstractclienthttprequest.execute(abstractclienthttprequest.java:53)     @ org.springframework.boot.devtools.remote.client.classpathchangeuploader.onapplicationevent(classpathchangeuploader.java:102)     ... 12 more 

in docker , intellij:

2016-07-06 12:49:29.141  info 17731 --- [   file watcher] o.s.b.d.r.c.classpathchangeuploader      : uploaded 1 class resource 

logs see context reloaded. may problem?

there's bug in spring boot's devtools means if make change application while restart triggered previous change still in progress, attempt upload changes fail. think need update devtools retry upload attempt.

in meantime, "solution" stop , restart remotespringapplication whenever see failure due java.net.connectexception: connection refused.