plugin fails to retrieve information from commit

According to the stacktrace, the assertion at `AbstractDataGetter:98` fails:

assert EventQueue.isDispatchThread();

Please share the whole stack trace. Do you initiate this call sequence manually? I don't see any classes from a 3-party plugin in the stack trace.

the full stack trace is:

null

java.lang.AssertionError

                at com.intellij.vcs.log.data.AbstractDataGetter.getCommitData(AbstractDataGetter.java:98)

                at com.intellij.vcs.log.ui.table.GraphTableModel.a(GraphTableModel.java:181)

                at com.intellij.vcs.log.ui.table.GraphTableModel.getFullDetails(GraphTableModel.java:170)

                at com.intellij.vcs.log.impl.VcsLogImpl$1.get(VcsLogImpl.java:115)

                at java.util.AbstractList$Itr.next(AbstractList.java:358)

                at com.intellij.util.containers.ContainerUtilRt.map2List(ContainerUtilRt.java:380)

                at com.intellij.util.containers.ContainerUtil.map2List(ContainerUtil.java:2656)

                at com.intellij.util.containers.ContainerUtil.map2Array(ContainerUtil.java:969)

                at com.intellij.vcs.log.ui.frame.MainFrame.getData(MainFrame.java:221)

                at com.intellij.ide.impl.DataManagerImpl.a(DataManagerImpl.java:86)

                at com.intellij.ide.impl.DataManagerImpl.access$000(DataManagerImpl.java:58)

                at com.intellij.ide.impl.DataManagerImpl$1.getData(DataManagerImpl.java:96)

                at com.intellij.openapi.actionSystem.DataKey.getData(DataKey.java:81)

                at com.intellij.openapi.vcs.history.VcsRevisionNumberArrayRule.getRevisionNumbers(VcsRevisionNumberArrayRule.java:54)

                at com.intellij.openapi.vcs.history.VcsRevisionNumberArrayRule.getData(VcsRevisionNumberArrayRule.java:42)

                at com.intellij.ide.impl.DataManagerImpl.a(DataManagerImpl.java:93)

                at com.intellij.ide.impl.DataManagerImpl.a(DataManagerImpl.java:73)

                at com.intellij.ide.impl.DataManagerImpl.access$300(DataManagerImpl.java:58)

                at com.intellij.ide.impl.DataManagerImpl$MyDataContext.a(DataManagerImpl.java:400)

                at com.intellij.ide.impl.DataManagerImpl$MyDataContext.getData(DataManagerImpl.java:377)

                at com.intellij.openapi.actionSystem.DataContext.getData(DataContext.java:59)

                at com.intellij.openapi.actionSystem.AnActionEvent.getData(AnActionEvent.java:165)

                at com.ritesh.idea.plugin.diff.GitDiffProvider.generateDiff(GitDiffProvider.java:49)

                at com.ritesh.idea.plugin.ui.action.ShowReviewBoard$2.throwableCall(ShowReviewBoard.java:73)

                at com.ritesh.idea.plugin.ui.action.ShowReviewBoard$2.throwableCall(ShowReviewBoard.java:68)

                at com.ritesh.idea.plugin.ui.TaskUtil$3.call(TaskUtil.java:70)

                at com.ritesh.idea.plugin.ui.TaskUtil$3.call(TaskUtil.java:66)

                at com.intellij.openapi.application.impl.ApplicationImpl$3.call(ApplicationImpl.java:357)

                at java.util.concurrent.FutureTask.run(FutureTask.java:266)

                at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

                at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

                at java.lang.Thread.run(Thread.java:745)

It's kinda obvious, isn't it? You're calling the method which requires the Event Dispatch Thread from a background thread => the assertion happens.

Btw, it is usually not a good idea to call AnAction manually (especially from the background). 

If you tell me, which information do you want to acquire, in which situation and in which context, I might be able to point to a better method.

sorry for the extremely late response.

I am not an intellij developer so it is kind of hard for me to understand.

I am trying to generate the diff content from the git provider once the user presses a specific button in the intellij ui

What should be the source of this diff content? So, you've got a button somewhere on a toolbar. What diff exactly should a user see when he presses the button?

the diff is between two git commit revisions.

it is supposed to take the diff between the commits and push it to a different system.

the thing is that it used to work intellij 2016

Where these two git commit revisions come from? Are they selected from the log?