support compare id and url for github

Author: Yang Guo

platform-util-git/src/main/java/com/flow/platform/util/git/hooks/GitHubEvents.java

@@ -109,6 +109,8 @@ private class RequestRoot {
 
             @SerializedName("pull_request")
             private PullRequest pullRequest;
+
+            private PrRepo repository;
         }
 
         private class PullRequest {
@@ -153,6 +155,9 @@ private class PrRepo {
 
             @SerializedName("full_name")
             private String name;
+
+            @SerializedName("html_url")
+            private String url;
         }
 
         private class UserInfo {
@@ -214,6 +219,10 @@ else if (Objects.equals(pullRequest.state, STATE_CLOSE)) {
             target.setBranch(pullRequest.target.ref);
             target.setSha(pullRequest.target.sha);
 
+            // set compare id
+            final String compareId = GitPullRequestEvent.buildCompareId(source, target);
+            event.setCompareId(compareId);
+            event.setCompareUrl(mr.repository.url + "/compare/" + compareId);
             return event;
         }
     }

platform-util-git/src/test/java/com/flow/platform/util/git/test/GitHubHooksEventTest.java

@@ -140,11 +140,15 @@ public void should_convert_to_pr_event_obj() throws Throwable {
         Assert.assertEquals("1d1de876084ef656e522f360b88c1e96acf6b806", source.getSha());
 
         // then: verify target info
-        GitPullRequestInfo target = event.getSource();
-        Assert.assertEquals("developer", target.getBranch());
+        GitPullRequestInfo target = event.getTarget();
+        Assert.assertEquals("master", target.getBranch());
         Assert.assertEquals(86284448, target.getProjectId().intValue());
         Assert.assertEquals("yang-guo-2016/Test", target.getProjectName());
-        Assert.assertEquals("1d1de876084ef656e522f360b88c1e96acf6b806", source.getSha());
+        Assert.assertEquals("4e4e3750cd468f245bd9f0f938c4b5f76e1bc5b0", target.getSha());
+
+        Assert.assertEquals("4e4e3750cd46...1d1de876084e", event.getCompareId());
+        Assert.assertEquals("https://github.com/yang-guo-2016/Test/compare/4e4e3750cd46...1d1de876084e",
+            event.getCompareUrl());
     }
 
     private static String loadWebhookSampleJson(String classPath) throws IOException {