From 47a4fa6b1fd6b7ac171a23a6c6056b9a178db008 Mon Sep 17 00:00:00 2001
From: Dmitry Simonenko <pmwkaa@gmail.com>
Date: Mon, 26 Dec 2011 14:31:56 +0400
Subject: [PATCH] tarantool_topology.sh renamed to the tarantool_expand.sh,
rollback scheme added.
---
extra/tarantool_expand.sh | 153 ++++++++++++++++++++++++++++++
extra/tarantool_topology.sh | 180 ------------------------------------
2 files changed, 153 insertions(+), 180 deletions(-)
create mode 100755 extra/tarantool_expand.sh
delete mode 100755 extra/tarantool_topology.sh
diff --git a/extra/tarantool_expand.sh b/extra/tarantool_expand.sh
new file mode 100755
index 0000000000..349b285b79
--- /dev/null
+++ b/extra/tarantool_expand.sh
@@ -0,0 +1,153 @@
+#!/bin/sh
+
+#
+# Tarantool DB expand script
+#
+
+prefix="/usr/local"
+prefix_var="/var"
+prefix_etc="/etc"
+
+deploy_cfg="${prefix}/etc/tarantool_deploy.cfg"
+deploy_exists=0
+deploy_current=0
+deploy_count=0
+
+prompt_name=`basename $0`
+prompt=1
+
+error() {
+ echo "$prompt_name error: $*" 1>&2
+ exit 1
+}
+
+log() {
+ echo "$prompt_name > $*"
+}
+
+usage() {
+ echo "Tarantool DB expand script"
+ echo
+ echo "usage: tarantool_expand.sh [-y] <servers>"
+ exit 0
+}
+
+rollback_instance() {
+ id=$1
+ workdir="${prefix_var}/tarantool$id"
+ config="${prefix}/etc/tarantool$id.cfg"
+
+ rm -f "${prefix}/bin/tarantool$id.sh"
+ rm -f "${prefix_etc}/init.d/tarantool$id"
+ rm -f $config
+ rm -rf $work_dir
+}
+
+rollback() {
+ log "rollbacking changes"
+ for instance in `seq $deploy_current $deploy_count`; do
+ rollback_instance $instance
+ done
+ exit 1
+}
+
+try() {
+ cmd="$*"
+ log $cmd
+ eval $cmd
+ if [ $? -gt 0 ]; then
+# log "failed: $cmd"
+ rollback
+ fi
+}
+
+deploy_instance() {
+ id=$1
+ workdir="${prefix_var}/tarantool$id"
+ config="${prefix}/etc/tarantool$id.cfg"
+
+ log "-- deploying instance $id"
+
+ # setting up work environment
+ try "mkdir -p $workdir/logs"
+ try "chown tarantool:tarantool -R $workdir"
+
+ # setting up startup snapshot
+ try "cp \"${prefix}/share/tarantool/00000000000000000001.snap\" $workdir"
+
+ # setting up configuration file
+ try "cp \"${prefix}/etc/tarantool.cfg\" $config"
+
+ try "echo \"work_dir = \"$workdir\"\" >> $config"
+ try "echo \"username = \"tarantool\"\" >> $config"
+ try "echo \"logger = \"cat - >> logs/tarantool.log\"\" >> $config"
+
+ # setting up wrapper
+ try "ln -s \"${prefix}/bin/tarantool_multi.sh\" \"${prefix}/bin/tarantool$id.sh\""
+
+ # setting up startup script
+ try "ln -s \"${prefix_etc}/init.d/tarantool\" \"${prefix_etc}/init.d/tarantool$id\""
+}
+
+deploy() {
+ for instance in `seq $deploy_current $deploy_count`; do
+ deploy_instance $instance
+ done
+}
+
+update() {
+ log "-- updating deploy config"
+ try "echo $deploy_current > $deploy_cfg"
+}
+
+# processing command line arguments
+if [ $# -eq 2 ]; then
+ if [ "$1" != "-y" ]; then
+ usage
+ fi
+ prompt=0
+ deploy_count=$2
+else
+ if [ $# -ne 1 ]; then
+ usage
+ fi
+ deploy_count=$1
+fi
+
+# validating instance number
+[ $deploy_count -eq $deploy_count -o $deploy_count -le 0 ] 2>/dev/null || \
+ error "bad instance number"
+
+if [ -f $deploy_cfg ]; then
+ deploy_exists=1
+ deploy_current=`cat $deploy_cfg`
+ # dont' change deploy if it said so in configuration file
+ if [ $deploy_current -eq 0 ]; then
+ log "skipping deploy setup"
+ exit 0
+ fi
+fi
+
+if [ $deploy_count -le $deploy_current ]; then
+ error "expand only is supported (required instances number $deploy_count" \
+ "is lower/equal than deployed $deploy_current)"
+fi
+
+# asking permission to continue
+if [ $prompt -eq 1 ]; then
+ log "About to deploy $deploy_current - $deploy_count tarantool instances."
+ log "Run? [n/y]"
+ read answer
+ case "$answer" in
+ [Yy]) ;;
+ *)
+ log "aborting"
+ exit 0
+ ;;
+ esac
+fi
+
+deploy
+update
+
+log "done"
diff --git a/extra/tarantool_topology.sh b/extra/tarantool_topology.sh
deleted file mode 100755
index 3b8b751937..0000000000
--- a/extra/tarantool_topology.sh
+++ /dev/null
@@ -1,180 +0,0 @@
-#!/bin/sh
-
-##
-## Tarantool DB topology setup script
-##
-
-prefix="/usr/local"
-prefix_var="/var"
-prefix_etc="/etc"
-
-topology_cfg="${prefix}/etc/tarantool_topology.cfg"
-topology_exists=0
-topology_count=0
-prompt=1
-name=`basename $0`
-
-error() {
- echo "$name error: $*" 1>&2
- exit 1
-}
-
-log() {
- echo "$name > $*"
-}
-
-toolchain_check() {
- for tool in $*; do
- which $tool 1>/dev/null 2>&1
- if [ $? -gt 0 ]; then
- error "required utility '$tool' is not found"
- fi
- done
-}
-
-usage() {
- echo "Tarantool DB topology setup script"
- echo
- echo "usage: tarantool_topology.sh [-y] <servers>"
- exit 0
-}
-
-backup_instance() {
- id=$1
- workdir="${prefix_var}/tarantool$id"
- workdir_new="${prefix_var}/tarantool${id}_${ts}"
- config="${prefix}/etc/tarantool$id.cfg"
- config_new="${prefix}/etc/tarantool${id}-${ts}.cfg"
-
- log "making instance $id backup"
-
- # moving old instance directory
- mv $workdir $workdir_new
-
- # moving old configuration file
- mv $config $config_new
-
- # removing startup and wrapper links
- rm -f "${prefix_etc}/init.d/tarantool$id"
- rm -f "${prefix}/bin/tarantool$id.sh"
-}
-
-backup() {
- log "making backup for $topology_count instances"
- to=`expr $topology_count - 1`
- for instance in `seq 0 $to`; do
- backup_instance $instance
- done
-}
-
-deploy_instance() {
- id=$1
- workdir="${prefix_var}/tarantool$id"
- config="${prefix}/etc/tarantool$id.cfg"
-
- log "deploying instance $id"
-
- # setting up work environment
- mkdir -p $workdir/logs
-
- chown tarantool:tarantool -R $workdir
-
- # setting up startup snapshot
- cp "${prefix}/share/tarantool/00000000000000000001.snap" $workdir
-
- # setting up configuration file
- cp "${prefix}/etc/tarantool.cfg" $config
-
- echo "work_dir = \"$workdir\"" >> $config
- echo "username = \"tarantool\"" >> $config
- echo "logger = \"cat - >> logs/tarantool.log\"" >> $config
-
- # setting up wrapper
- ln -s "${prefix}/bin/tarantool_multi.sh" "/usr/local/bin/tarantool$id.sh"
-
- # setting up startup script
- ln -s "${prefix_etc}/init.d/tarantool" "${prefix_etc}/init.d/tarantool$id"
-}
-
-deploy() {
- to=`expr $topology_count - 1`
- for instance in `seq 0 $to`; do
- deploy_instance $instance
- done
-}
-
-update() {
- log "updating topology config"
- echo $topology_count > $topology_cfg
-}
-
-# processing command line arguments
-#
-num=0
-if [ $# -eq 2 ]; then
- if [ "$1" != "-y" ]; then
- usage
- fi
- prompt=0
- num=$2
-else
- if [ $# -ne 1 ]; then
- usage
- fi
- num=$1
-fi
-
-# validating instance number
-#
-[ $num -eq $num -o $num -le 0 ] 2>/dev/null || error "bad instance number"
-
-if [ -f $topology_cfg ]; then
- topology_exists=1
- topology_count=`cat $topology_cfg`
- # dont' change topology if it said so in configuration file
- if [ $topology_count -eq 0 ]; then
- log "skipping topology setup"
- exit 0
- fi
-fi
-
-toolchain_check "date" "expr"
-
-# time-stamp
-#
-ts=`/bin/date +"%Y%m%d-%H%M%S"`
-
-# asking permission to continue
-#
-if [ $prompt -eq 1 ]; then
- log "About to create new Tarantool DB topology for $num instances."
- if [ $topology_exists -eq 1 ]; then
- log "Old data and configuration will be saved with $ts time-stamp prefix."
- fi
- log "Are you sure? [n/y]"
- read answer
- case "$answer" in
- [Yy]) ;;
- *)
- log "aborting"
- exit 0
- ;;
- esac
-fi
-
-# stop on error
-#
-set -e
-
-if [ $topology_exists -eq 1 ]; then
- backup
-fi
-
-# updating instances count
-#
-topology_count=$num
-
-deploy
-update
-
-log "done"
--
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