diff --git a/src/com/mirantis/mk/Gerrit.groovy b/src/com/mirantis/mk/Gerrit.groovy
index 85b0411..c33dc5e 100644
--- a/src/com/mirantis/mk/Gerrit.groovy
+++ b/src/com/mirantis/mk/Gerrit.groovy
@@ -460,3 +460,71 @@
         return getGerritChange(gerritUser, gerritHost, jsonChange['number'], gerritCredentials, true)
     }
 }
+
+/**
+ * Download change from gerrit, if needed repository maybe pre cloned
+ *
+ * @param path               Directory to checkout repository to
+ * @param url                Source Gerrit repository URL
+ * @param reference          Gerrit reference to download (e.g refs/changes/77/66777/16)
+ * @param type               type of gerrit download
+ * @param credentialsId      Credentials ID to use for source Git
+ * @param gitCheckoutParams  map with additional parameters for git.checkoutGitRepository method e.g:
+ *                           [ branch: 'master', poll: true, timeout: 10, depth: 0 ]
+ * @param doGitClone      boolean whether to pre clone and do some checkout
+ */
+def downloadChange(path, url, reference, credentialsId, type = 'cherry-pick', doGitClone = true, Map gitCheckoutParams = [:]){
+    def git = new com.mirantis.mk.Git()
+    def ssh = new com.mirantis.mk.Ssh()
+    def cmd
+    switch(type) {
+        case 'cherry-pick':
+            cmd = "git fetch ${url} ${reference} && git cherry-pick FETCH_HEAD"
+            break;
+        case 'format-patch':
+            cmd = "git fetch ${url} ${reference} && git format-patch -1 --stdout FETCH_HEAD"
+            break;
+        case 'pull':
+            cmd = "git pull ${url} ${reference}"
+            break;
+        default:
+            error("Unsupported gerrit download type")
+    }
+    if (doGitClone) {
+        def branch =  gitCheckoutParams.get('branch', 'master')
+        def poll = gitCheckoutParams.get('poll', true)
+        def timeout = gitCheckoutParams.get('timeout', 10)
+        def depth = gitCheckoutParams.get('depth', 0)
+        git.checkoutGitRepository(path, url, branch, credentialsId, poll, timeout, depth, '')
+    }
+    ssh.prepareSshAgentKey(credentialsId)
+    dir(path){
+         ssh.agentSh(cmd)
+    }
+}
+
+/**
+ * Parse gerrit event text and if Workflow +1 is detected,
+ * return true
+ *
+ * @param gerritEventCommentText  gerrit event comment text
+ * @param gerritEventType         type of gerrit event
+ */
+def isGate(gerritEventCommentText, gerritEventType) {
+    def common = new com.mirantis.mk.Common()
+    def gerritEventCommentTextStr = ''
+    def res = false
+    if (gerritEventCommentText) {
+        try{
+            gerritEventCommentTextStr = new String(gerritEventCommentText.decodeBase64())
+        } catch (e) {
+            gerritEventCommentTextStr = gerritEventCommentText
+        }
+        common.infoMsg("GERRIT_EVENT_COMMENT_TEXT is ${gerritEventCommentTextStr}")
+    }
+    if (gerritEventType == 'comment-added' && gerritEventCommentTextStr =~ /^Patch Set \d+:\s.*Workflow\+1$/) {
+        common.infoMsg("Running in gate mode")
+        res = true
+    }
+    return res
+}