SLI-1734 Use ProgressIndicator to compute git information

git/src/main/kotlin/org/sonarlint/intellij/git/GitRepo.kt

@@ -19,7 +19,9 @@
  */
 package org.sonarlint.intellij.git
 
+import com.intellij.openapi.progress.ProgressManager
 import com.intellij.openapi.project.Project
+import git4idea.GitRevisionNumber
 import git4idea.commands.Git
 import git4idea.commands.GitCommand
 import git4idea.commands.GitLineHandler
@@ -74,15 +76,14 @@ class GitRepo(private val repo: GitRepository, private val project: Project) : V
     }
 
     private fun distance(project: Project, repository: GitRepository, from: String, to: String): Int? {
-        val mergeBase = try {
-            GitHistoryUtils.getMergeBase(project, repository.root, from, to) ?: return null
-        } catch (e: IllegalStateException) {
-            // SLI-1381: "There is no ProgressIndicator or Job in this thread" should simply be a loud error
-            SonarLintConsole.get(project).debug("Couldn't compute the git distance, reason: ${e.message}")
-            return null
-        }
-        val aheadCount = getNumberOfCommitsBetween(repository, from, mergeBase.asString()) ?: return null
-        val behindCount = getNumberOfCommitsBetween(repository, to, mergeBase.asString()) ?: return null
+        val revisionNumber = ProgressManager.getInstance().runProcessWithProgressSynchronously<GitRevisionNumber, Exception>(
+            { GitHistoryUtils.getMergeBase(project, repository.root, from, to) },
+            "SonarQube: Computing branch information",
+            true,
+            repository.project
+        )
+        val aheadCount = getNumberOfCommitsBetween(repository, from, revisionNumber.asString()) ?: return null
+        val behindCount = getNumberOfCommitsBetween(repository, to, revisionNumber.asString()) ?: return null
         return aheadCount + behindCount
     }
 
@@ -91,13 +92,20 @@ class GitRepo(private val repo: GitRepository, private val project: Project) : V
         from: String,
         to: String,
     ): Int? {
-        val handler = GitLineHandler(repository.project, repository.root, GitCommand.REV_LIST)
-        handler.addParameters("--count", "$from..$to")
-        handler.setSilent(true)
-        return try {
-            Integer.parseInt(Git.getInstance().runCommand(handler).getOutputOrThrow().trim())
-        } catch (e: Exception) {
-            throw Exception("Cannot get number of commits between '$from' and '$to'", e)
-        }
+        return ProgressManager.getInstance().runProcessWithProgressSynchronously<Int?, Exception>(
+            {
+                val handler = GitLineHandler(repository.project, repository.root, GitCommand.REV_LIST)
+                handler.addParameters("--count", "$from..$to")
+                handler.setSilent(true)
+                try {
+                    Integer.parseInt(Git.getInstance().runCommand(handler).getOutputOrThrow().trim())
+                } catch (e: Exception) {
+                    throw Exception("Cannot get number of commits between '$from' and '$to'", e)
+                }
+            },
+            "SonarQube: Computing branch information",
+            true,
+            repository.project
+        )
     }
 }