Add comments on initialization

Author: vol0n

clion-plugin/src/main/kotlin/org/utbot/cpp/clion/plugin/UTBotStartupActivity.kt

@@ -1,9 +1,11 @@
 package org.utbot.cpp.clion.plugin
 
 import com.intellij.ide.util.RunOnceUtil
+import com.intellij.openapi.components.service
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.startup.StartupActivity
 import org.utbot.cpp.clion.plugin.client.Client
+import org.utbot.cpp.clion.plugin.client.ClientManager
 import org.utbot.cpp.clion.plugin.settings.pluginSettings
 import org.utbot.cpp.clion.plugin.settings.settings
 import org.utbot.cpp.clion.plugin.ui.wizard.UTBotWizard
@@ -12,8 +14,9 @@ import org.utbot.cpp.clion.plugin.utils.invokeOnEdt
 
 class UTBotStartupActivity : StartupActivity {
     override fun runActivity(project: Project) {
-
-        project.getCurrentClient()
+        // we initialize Client here, so that initialization will not happen when user issues first
+        // generation request which would cause a UI freeze
+        initializeClient(project)
         guessPathsOnFirstProjectOpen(project)
         showWizardOnFirstProjectOpen(project)
     }
@@ -27,6 +30,13 @@ class UTBotStartupActivity : StartupActivity {
         }
     }
 
+    private fun initializeClient(project: Project) {
+        // Here we address the service ClientManager for the first time so that it
+        // will be initialized by the ide and Client will be created.
+        // Client in turn will create a grpc channel and start heartbeating the server
+        project.service<ClientManager>()
+    }
+
     private fun guessPathsOnFirstProjectOpen(project: Project) {
         RunOnceUtil.runOnceForProject(project, "Guess UTBot paths in settings") {
             project.settings.predictPaths()

clion-plugin/src/main/resources/META-INF/plugin.xml

@@ -15,6 +15,7 @@
         <codeInsight.lineMarkerProvider language="ObjectiveC"
                                         implementationClass="org.utbot.cpp.clion.plugin.ui.testsResults.UTBotTestRunLineMarkerProvider"/>
         <projectService serviceImplementation="org.utbot.cpp.clion.plugin.settings.UTBotAllProjectSettings"/>
+        <projectService serviceImplementation="org.utbot.cpp.clion.plugin.client.ClientManager"/>
         <applicationService serviceImplementation="org.utbot.cpp.clion.plugin.settings.UTBotPluginSpecificSettings"/>
         <coverageEngine implementation="org.utbot.cpp.clion.plugin.coverage.UTBotCoverageEngine"/>
         <postStartupActivity implementation="org.utbot.cpp.clion.plugin.UTBotStartupActivity"/>