Add monitor loop for Gitea API operations

Change-Id: I76b2a3f6928e7cf64933e52d9fda34a978e1121b
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/installers/mgmt-cluster/gitea/library/helpers.sh b/installers/mgmt-cluster/gitea/library/helpers.sh
new file mode 100755
index 0000000..b61ec65
--- /dev/null
+++ b/installers/mgmt-cluster/gitea/library/helpers.sh
@@ -0,0 +1,40 @@
+#######################################################################################
+# Copyright ETSI Contributors and Others.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#######################################################################################
+
+
+# Helper function to monitor progress of a condition
+function monitor_condition() {
+    local CONDITION="$1"        # Function with the condition
+    local MESSAGE="${2:-}"      # Message during each check
+    local TIMEOUT="${3:-300}"   # Timeout, in seconds (default: 5 minutes)
+    local STEP="${4:-2}"        # Polling period (default: 2 seconds)
+
+    "${CONDITION}"
+    RET=$?
+    until [ ${RET} -eq 0 ] || [ ${TIMEOUT} -le 0 ]
+    do
+        echo -en "${MESSAGE}"
+
+        ((TIMEOUT-=${STEP}))
+        sleep "${STEP}"
+
+        "${CONDITION}"
+        RET=$?
+    done
+
+    return ${RET}
+}