Various fixes

* Retrieve build commands from build_manager
* fixing psa build dir
* Use different node labels for different builds
* Add script to download jenkins artifacts
* Verify status per stage
* Moving code to library
* Ability to comment on gerrit change

Change-Id: I390674b7ed6cfd20e4746a2d32e708fd6855857b
Signed-off-by: Dean Birch <dean.birch@arm.com>
diff --git a/src/org/trustedfirmware/Gerrit.groovy b/src/org/trustedfirmware/Gerrit.groovy
new file mode 100644
index 0000000..7addf0d
--- /dev/null
+++ b/src/org/trustedfirmware/Gerrit.groovy
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2020, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+package org.trustedfirmware
+
+def verifyStatus(value, verify_name, category) {
+  node("docker-amd64-xenial") {
+    cleanWs()
+    dir("tf-m-ci-scripts") {
+      git url: '$CI_SCRIPTS_REPO', branch: 'master', credentialsId: 'GIT_SSH_KEY'
+    }
+    verifyStatusInWorkspace(value, verify_name, category)
+  }
+}
+
+def verifyStatusInWorkspace(value, verify_name, category) {
+  withCredentials([usernamePassword(credentialsId: 'VERIFY_STATUS', passwordVariable: 'VERIFY_PASSWORD', usernameVariable: 'VERIFY_USER')]) {
+    sh("""
+  if [ -z "\$GERRIT_HOST" ] ; then
+    echo Not running for a Gerrit change, skipping vote.
+    exit 0
+  fi
+  if [ ! -d venv ] ; then
+    virtualenv -p \$(which python3) venv
+  fi
+  . venv/bin/activate
+  pip -q install requests
+  ./tf-m-ci-scripts/jenkins/verify.py --category ${category} --value ${value} --verify-name ${verify_name} --user \$VERIFY_USER
+  """)
+  }
+}
+
+def comment(comment) {
+  node("docker-amd64-xenial") {
+    cleanWs()
+    dir("tf-m-ci-scripts") {
+      git url: '$CI_SCRIPTS_REPO', branch: 'master', credentialsId: 'GIT_SSH_KEY'
+    }
+    commentInWorkspace(comment)
+  }
+}
+
+def commentInWorkspace(comment) {
+  withCredentials([usernamePassword(credentialsId: 'VERIFY_STATUS', passwordVariable: 'GERRIT_PASSWORD', usernameVariable: 'GERRIT_USER')]) {
+    sh("""
+  if [ -z "\$GERRIT_HOST" ] ; then
+    echo Not running for a Gerrit change, skipping.
+    exit 0
+  fi
+  if [ ! -d venv ] ; then
+    virtualenv -p \$(which python3) venv
+  fi
+  . venv/bin/activate
+  pip -q install requests
+  ./tf-m-ci-scripts/jenkins/comment.py --comment "${comment}" --user \$GERRIT_USER
+  """)
+  }
+}