added 'create_tag' script

create_tag.sh

@@ -0,0 +1,58 @@
+#!/bin/bash
+
+# check if everything is committed
+CLEAN=`git status -s`
+if [ ! -z "$CLEAN" ]
+then
+   echo "Working directory not clean. Please commit all changes before tagging"
+   echo "Aborting."
+   exit -1
+fi
+
+echo "Fetching origin..."
+git fetch origin > /dev/null
+
+# check if current branch is master
+BRANCH=`git branch | grep "^*" | cut -d " " -f 2`
+if [ "$BRANCH" != "master" ]
+then
+   echo "Current branch is $BRANCH. Must be master."
+   echo "Aborting."
+   exit -1
+fi
+
+# check if master == origin/master
+MASTER_COMMIT=`git show --format="%H" master`
+ORIGINMASTER_COMMIT=`git show --format="%H" origin/master`
+
+if [ "$MASTER_COMMIT" != "$ORIGINMASTER_COMMIT" ]
+then
+   echo "Local master is not up to date. "
+   echo "Aborting."
+   exit -1
+fi
+
+# check if tag to create has already been created
+VERSION=`mvn validate | grep "Building elasticsearch-timefacets-plugin" | cut -d " " -f 4`
+EXISTS=`git tag | grep $VERSION`
+
+if [ "$VERSION" == "$EXISTS" ]
+then
+   echo "Revision $VERSION already tagged."
+   echo "Aborting."
+   exit -1
+fi
+
+# check if VERSION is in head of CHANGES.txt
+REV_NOTE=`grep "[0-9/]\{10\} $VERSION" CHANGES.txt`
+if [ -z "$REV_NOTE" ]
+then
+    echo "No notes for revision $VERSION found in CHANGES.txt"
+    echo "Aborting."
+    exit -1
+fi
+
+echo "Creating tag $VERSION..."
+git tag -a "$VERSION" -m "Tag release for revision $VERSION"
+git push --tags
+echo "Done."