ignoring pull request events (#2064)

* ignoring pull request events

Author: motatoes

backend/controllers/github.go

@@ -449,6 +449,11 @@ func handlePullRequestEvent(gh utils.GithubClientProvider, payload *github.PullR
 		}
 	}()
 
+	if os.Getenv("DIGGER_IGNORE_PULL_REQUEST_EVENTS") == "1" {
+		slog.Debug("Ignoring pull request event as DIGGER_IGNORE_PULL_REQUEST_EVENTS is set")
+		return nil
+	}
+
 	installationId := *payload.Installation.ID
 	repoName := *payload.Repo.Name
 	repoOwner := *payload.Repo.Owner.Login
@@ -1470,7 +1475,6 @@ func handleIssueCommentEvent(gh utils.GithubClientProvider, payload *github.Issu
 		"issueNumber", issueNumber,
 		"impactedProjectCount", len(impactedProjectsForComment),
 		"allImpactedProjectsCount", len(allImpactedProjects),
-
 	)
 
 	jobs, coverAllImpactedProjects, err := generic.ConvertIssueCommentEventToJobs(repoFullName, actor, issueNumber, commentBody, impactedProjectsForComment, allImpactedProjects, config.Workflows, prBranchName, defaultBranch)
@@ -1483,7 +1487,7 @@ func handleIssueCommentEvent(gh utils.GithubClientProvider, payload *github.Issu
 		commentReporterManager.UpdateComment(fmt.Sprintf(":x: Error converting event to jobs: %v", err))
 		return fmt.Errorf("error converting event to jobs")
 	}
-	
+
 	slog.Info("Issue comment event converted to jobs successfully",
 		"issueNumber", issueNumber,
 		"jobCount", len(jobs),

docs/ce/howto/ignore-pull-request-events.mdx

@@ -0,0 +1,7 @@
+---
+title: "Ignore pull request events"
+---
+
+By default digger will run on every pull request event, figure out impacted projects, start jobs automatically
+and lock them. If you would like digger to ignore all pull requests by default and only react to digger plan / digger apply
+comments you can achieve this by setting the environment variable `DIGGER_IGNORE_PULL_REQUEST_EVENTS=1` on your selfhosted instance.

docs/mint.json

@@ -107,7 +107,8 @@
         "ce/howto/using-infracost",
         "ce/howto/using-opa-conftest",
         "ce/howto/using-terragrunt",
-        "ce/howto/versioning"
+        "ce/howto/versioning",
+        "ce/howto/ignore-pull-request-events"
       ]
     },
     {