Boot Properties Editor Code Completions not work

[cenggel]

spring-tool-suite-4-4.0.2.RELEASE-e4.9.0-macosx.cocoa.x86_64.dmg
spring-tool-suite-4-4.1.0.CI-B1407-e4.10.0-macosx.cocoa.x86_64.dmg
Mac osx 10.11.6
jdk 1.8

when edit .yml Code Completions not work.

[BoykoAlex]

I'm working with exactly the same CI build on mac OSX: spring-tool-suite-4-4.1.0.CI-B1407-e4.10.0-macosx.cocoa.x86_64.dmg

Code completions work for me when i edit application.yml.
Is your file names application.yml and located under src/main/resources in your boot maben project?
Did you open the application.yml file with Generic Editor:

[cenggel]

Thanks for @BoykoAlex replay.

Yes, I did it but code completion not appeared.

sts3.9.2 completion works fine

How can I check what wrong for my environment ?

[BoykoAlex]

Close STS4
Run jps command in the console
Check if you have any processes like that:
29173 1.1.0.201810300740-spring-boot-language-server-1.1.0-SNAPSHOT.jar
Kill them manually: kill -6 <pid>
Open STS
Close all editors
Open preferences and check-mark Spring Boot here:

Open the YAML and try content assists again
The console view would show the language server log. If CA is not working still attach the contents of the console view here.
Also check for various lsp4e or sts errors in the error view.

[cenggel]

console log :

11:33:11.742 [main] INFO  o.s.i.v.b.a.BootLanguagServerBootApp - No active profile set, falling back to default profiles: default
11:33:11.817 [main] INFO  o.s.c.a.AnnotationConfigApplicationContext - Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@387c703b: startup date [Thu Dec 13 11:33:11 CST 2018]; root of context hierarchy
11:33:12.604 [main] INFO  o.s.b.f.a.AutowiredAnnotationBeanPostProcessor - JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
11:33:13.869 [main] INFO  o.s.j.e.a.AnnotationMBeanExporter - Registering beans for JMX exposure on startup
11:33:13.893 [main] INFO  o.s.i.v.b.a.BootLanguagServerBootApp - Started BootLanguagServerBootApp in 3.209 seconds (JVM running for 4.121)
11:33:13.896 [LanguageServerApp-lifecycle] INFO  o.s.i.v.c.l.LanguageServerRunner - Server ready to start after 4125 ms
11:33:13.899 [LanguageServerApp-lifecycle] INFO  o.s.ide.vscode.commons.util.Log - Starting LS
11:33:13.900 [LanguageServerApp-lifecycle] INFO  o.s.ide.vscode.commons.util.Log - Connected to parent using stdio
11:33:14.013 [pool-3-thread-1] INFO  o.s.i.v.c.l.u.SimpleLanguageServer - Initializing
11:33:14.028 [pool-3-thread-1] INFO  o.s.i.v.c.l.u.SimpleLanguageServer - Returning server capabilities to client: ServerCapabilities [
  textDocumentSync = Either [
    left = Incremental
    right = null
  ]
  hoverProvider = true
  completionProvider = CompletionOptions [
    resolveProvider = true
    triggerCharacters = null
  ]
  signatureHelpProvider = null
  definitionProvider = true
  typeDefinitionProvider = null
  implementationProvider = null
  referencesProvider = true
  documentHighlightProvider = true
  documentSymbolProvider = true
  workspaceSymbolProvider = true
  codeActionProvider = null
  codeLensProvider = CodeLensOptions [
    resolveProvider = false
  ]
  documentFormattingProvider = null
  documentRangeFormattingProvider = null
  documentOnTypeFormattingProvider = null
  renameProvider = null
  documentLinkProvider = null
  colorProvider = null
  executeCommandProvider = null
  workspace = WorkspaceServerCapabilities [
    workspaceFolders = WorkspaceFoldersOptions [
      supported = true
      changeNotifications = Either [
        left = 2c8c4fa1-bd9c-428b-b176-cb967426fa16
        right = null
      ]
    ]
  ]
  experimental = null
]
11:33:14.113 [SimpleLanguaserver main thread] INFO  o.s.i.v.c.l.u.SimpleLanguageServer - Initialization completed after 4341 ms
11:33:16.093 [pool-3-thread-1] WARN  o.e.lsp4j.jsonrpc.RemoteEndpoint - Unmatched cancel notification for request id 4
11:33:19.165 [SimpleLanguaserver main thread] INFO  o.s.i.v.b.jdt.ls.JdtLsProjectCache - Project Created: file:/Users/tsing/Documents/workspace-spring-tool-suite-4-4.10/demo-2
11:33:19.169 [SimpleLanguaserver main thread] INFO  o.s.i.v.b.jdt.ls.JdtLsProjectCache - Classpath has 76 entries 32 source attachements
11:33:19.170 [SimpleLanguaserver main thread] INFO  o.s.i.v.b.a.BootLanguageServerInitializer - A project changed demo-2, triggering reconcile on all open documents
11:33:19.213 [Reconciler-1] INFO  o.s.ide.vscode.commons.util.Log - Indexing Spring Boot Properties for demo-2
11:33:19.247 [SimpleLanguaserver main thread] INFO  o.s.i.v.b.jdt.ls.JdtLsProjectCache - Project Created: file:/Users/tsing/Documents/workspace-spring-tool-suite-4-4.10/demo
11:33:19.253 [SimpleLanguaserver main thread] INFO  o.s.i.v.b.jdt.ls.JdtLsProjectCache - Classpath has 84 entries 56 source attachements
11:33:19.253 [SimpleLanguaserver main thread] INFO  o.s.i.v.b.a.BootLanguageServerInitializer - A project changed demo, triggering reconcile on all open documents
11:33:19.605 [Reconciler-1] INFO  o.s.ide.vscode.commons.util.Log - Indexing Spring Boot Properties for demo-2 DONE
11:33:19.605 [Reconciler-1] INFO  o.s.ide.vscode.commons.util.Log - Indexed 1007 properties.

jps :
32886 1.2.0.201812112357-spring-boot-language-server-1.2.0-SNAPSHOT.jar

[cenggel]

have error log

This is most often caused by a problem with your internet connection. Please check your internet connection and retry.
!STACK 1
org.eclipse.core.runtime.CoreException: Connection failed

This is most often caused by a problem with your internet connection. Please check your internet connection and retry.
	at org.eclipse.epp.internal.mpc.core.transport.httpclient.HttpClientTransport.stream(HttpClientTransport.java:119)
	at org.eclipse.epp.internal.mpc.core.util.FallbackTransportFactory$FallbackTransport.stream(FallbackTransportFactory.java:71)
	at org.eclipse.epp.internal.mpc.core.service.RemoteMarketplaceService.processRequest(RemoteMarketplaceService.java:165)
	at org.eclipse.epp.internal.mpc.core.service.RemoteMarketplaceService.processRequest(RemoteMarketplaceService.java:130)
	at org.eclipse.epp.internal.mpc.core.service.RemoteMarketplaceService.processRequest(RemoteMarketplaceService.java:117)
	at org.eclipse.epp.internal.mpc.core.service.DefaultCatalogService.listCatalogs(DefaultCatalogService.java:53)
	at org.eclipse.epp.internal.mpc.ui.commands.AbstractMarketplaceWizardCommand.lambda$0(AbstractMarketplaceWizardCommand.java:168)
	at org.eclipse.epp.internal.mpc.ui.commands.AbstractMarketplaceWizardCommand$$Lambda$686/210616815.run(Unknown Source)
	at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122)
Caused by: org.apache.http.conn.HttpHostConnectException: Connect to 127.0.0.1:61910 [/127.0.0.1] failed: Connection refused
	at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:159)
	at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:373)
	at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:389)
	at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:237)
	at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:185)
	at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
	at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:111)
	at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)
	at org.apache.http.client.fluent.Request.internalExecute(Request.java:173)
	at org.apache.http.client.fluent.Executor.execute(Executor.java:262)
	at org.eclipse.epp.internal.mpc.core.transport.httpclient.HttpClientTransport.execute(HttpClientTransport.java:93)
	at org.eclipse.epp.internal.mpc.core.transport.httpclient.RequestTemplate.executeImpl(RequestTemplate.java:96)
	at org.eclipse.epp.internal.mpc.core.transport.httpclient.RequestTemplate.execute(RequestTemplate.java:55)
	at org.eclipse.epp.internal.mpc.core.transport.httpclient.HttpClientTransport.stream(HttpClientTransport.java:104)
	... 8 more
Caused by: java.net.ConnectException: Connection refused
	at java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345)
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
	at java.net.Socket.connect(Socket.java:589)
	at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75)
	at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142)
	... 23 more
Contains: Connection failed

[martinlippert]

@cenggel The log output from the console looks fine to me, nothing in there that looks like an error or like something is going wrong. The error from the Error Log seems to come from the Marketplace Client in Eclipse, so also not related to the property editing. Looks like we need to dive deeper to find the root cause for this.

Can you attach (or point us to) a sample project that reproduces the error?
And what happens exactly when you hit Ctrl-Space in the editor? Just plain nothing?

One thing that I noticed is that your example screenshot from 3.9.x is for a .properties file where you use the notion server.port=8000 (for example), whereas you are editing an application.YML file in the other case with a quite unusual notion for YAML. This should not break the content-assist (I tried it and it should just work), but the notion is still unusual for YAML. The server port would usually look like:

server:
  port: 8000

[cenggel]

3.9.x YAML works too:

When I hit Ctrl+Space in editor not happend any thing.

my demo is just create a simple spring boot project. attached by demo-2.zip
demo-2.zip

Thanks @martinlippert & @BoykoAlex .

[BoykoAlex]

Did you launch your STS with Java 11? Do you have any errors on you project?
I'd make sure that STS is launched with Java 8 and when you run Maven -> Update Project... action non errors on the project shown.
If you have any errors with your project classpath then STS4 tooling may not recognize your project as Spring Boot project and hence there won't be any content assists or any other features working with the Boot properties YAML file

At first I didn't get any content assist as well, but that was because i had maven problems on the project which i fixed by running STS with Java 8 (M2E doesn't seem to be working with Java 11). Then everything worked with your project.

[cenggel]

STS launched by java 8

and not have any errors for project.

Which version of java 8 you used?
My java version is :

java version "1.8.0_25"
Java(TM) SE Runtime Environment (build 1.8.0_25-b17)

[BoykoAlex]

This is old JDK. Try use the latest JDK. Mine is not latest, quite old, but it's 1.8.0_151

[cenggel]

I upgrade jdk to java version "1.8.0_191" reinstall my sts4 create new workspace and new boot project . But nothing changed . Code completions also not work for me.

[martinlippert]

@cenggel this is really strange, since everything looks like it should just work... :-( What happens if you create and open a file called application.properties in your demo project and open that? Is content-assist showing up there?

[cenggel]

@martinlippert edit application.properties in my demo project content-assist not showing up too .

[martinlippert]

Can you paste the content of your SpringTools4.ini file? Just guessing around, since I am running out of ideas here.

[martinlippert]

I also tried your demo project with the latest STS4 CI distribution build and the content-assist shows up just fine for the application.yml file. It takes a while when you invoke it for the first time, since it indexes stuff from the classpath, but it works. Maybe something is timing out in your case.

From what I can observe is that the log output from the language server (once you enabled that in the preferences), it shows additional output right after you hit content-assist for the first time in that application.yml file. Can you double check that? Maybe with a fresh STS4 install from the CI builds at http://dist.springsource.com/snapshot/STS4/nightly-distributions.html, using the latest version on Eclipse 4.10? Can you try that?

I am sorry for this taking so long to debug, seems like a really strange and hard-to-diagnose issue...