Add script to generate release commits

This script generates a commit on an existing changed policy framework
repo. It is called by other scripts in the release process.

Issue-ID: POLICY-3835
Change-Id: I457e1bea7d9319250fde729e82a7006f5b1da4eb
Signed-off-by: liamfallon <liam.fallon@est.tech>

diff --git a/integration/src/release_scripts/generateCommit.sh b/integration/src/release_scripts/generateCommit.sh
new file mode 100755 (executable)
index 0000000..997a368
--- /dev/null
+++ b/integration/src/release_scripts/generateCommit.sh
@@ -0,0 +1,163 @@
+SCRIPT_NAME=`basename $0`
+
+#
+# ============LICENSE_START================================================
+# ONAP
+# =========================================================================
+# Copyright (C) 2021 Nordix Foundation.
+# =========================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============LICENSE_END==================================================
+#
+
+repo_location="./"
+
+usage()
+{
+    echo ""
+    echo "$SCRIPT_NAME - generates a new commit or a patch on an existing commit for PF releases"
+    echo ""
+    echo "       usage:  $SCRIPT_NAME [-options]"
+    echo ""
+    echo "       options"
+    echo "         -h                - this help message"
+    echo "         -l location       - the location of the policy framework repos on the file system,"
+    echo "                             defaults to '$repo_location'"
+    echo "         -r repo           - the policy repo to which to commit"
+    echo "         -i issue-id       - issue ID in the format POLICY-nnnn"
+    echo "         -e commit-header  - the header for the commit"
+    echo "         -m commit-message - the message body for the commit"
+    echo ""
+    echo " example:"
+    echo "  $SCRIPT_NAME -l /home/git/onap -r policy/pap -i POLICY-1234 -e commit-header -m commit-message"
+    echo "    create a new commit or update an existing commit on policy/pap with the given details"
+    exit 255;
+}
+
+update_parent=false
+update_common=false
+update_models=false
+update_drools_pdp=false
+update_snapshot=false
+update_docker=false
+
+while getopts "hl:r:i:e:m:" opt
+do
+    case $opt in
+    h)
+        usage
+        ;;
+    l)
+        repo_location=$OPTARG
+        ;;
+    r)
+        specified_repo=$OPTARG
+        ;;
+    i)
+        issue_id=$OPTARG
+        ;;
+    e)
+        commit_header=$OPTARG
+        ;;
+    m)
+        commit_message=$OPTARG
+        ;;
+    \?)
+        usage
+        exit 1
+        ;;
+    esac
+done
+
+if [ $OPTIND -eq 1 ]
+then
+    echo "no arguments were specified"
+    usage
+fi
+
+if [[ -z "$repo_location" ]]
+then
+    echo "policy repo location not specified on -l flag"
+    exit 1
+fi
+if ! [ -d "$repo_location" ]
+then
+    echo "policy repo location '$repo_location' not found"
+    exit 1
+fi
+
+if [ -z "$specified_repo" ]
+then
+    echo "repo not specified on -r flag"
+    exit 1
+fi
+
+if [ -z "$issue_id" ]
+then
+    echo "issue_id not specified on -i flag"
+    exit 1
+fi
+
+if ! echo "$issue_id" | grep -Eq '^POLICY-[0-9]*$'
+then
+  echo "issue ID is invalid, it should be of form 'POLICY-nnnn'"
+  exit 1
+fi
+
+if [ -z "$commit_header" ]
+then
+    echo "commit_header not specified on -e flag"
+    exit 1
+fi
+
+if [ -z "$commit_message" ]
+then
+    echo "commit_message not specified on -m flag"
+    exit 1
+fi
+
+git -C $repo_location/$specified_repo status | grep '^Your branch is up to date' > /dev/null 2>&1
+return_code=$?
+
+if [ $return_code -eq 0 ]
+then
+    echo "generating commit '$commit_header' . . ."
+
+    commit_msg_temp_file=$(mktemp)
+    echo "$commit_header"                                           > $commit_msg_temp_file
+    echo ""                                                        >> $commit_msg_temp_file
+    echo "*** This commit is generated by a PF release script ***" >> $commit_msg_temp_file
+    echo ""                                                        >> $commit_msg_temp_file
+    echo "$commit_message"                                         >> $commit_msg_temp_file
+    echo ""                                                        >> $commit_msg_temp_file
+    echo "Issue-ID: $issue_id"                                     >> $commit_msg_temp_file
+
+    git -C $repo_location/$specified_repo add .
+    git -C $repo_location/$specified_repo commit -s -F "$commit_msg_temp_file"
+    rm $commit_msg_temp_file
+
+    echo "commit '$commit_header' generated"
+else
+    echo "updating commit '$commit_header' . . ."
+
+    git -C $repo_location/$specified_repo add .
+    git -C $repo_location/$specified_repo commit -as --amend --no-edit
+
+    echo "commit '$commit_header' updated"
+fi
+
+echo "sending commit '$commit_header' to gerrit . . ."
+git -C $repo_location/$specified_repo review
+echo "commit '$commit_header' sent to gerrit . . ."
+
+