From 199f30de87c9bb0a1008cd1cf9311b55c6bc2bfa Mon Sep 17 00:00:00 2001
From: smilingleo <leo.wei.liu@gmail.com>
Date: Fri, 3 Jul 2015 10:29:58 +0800
Subject: [PATCH] add a script to fetch mysql master binlog file and sync
 position automatically

---
 example/src/main/bin/init.sh | 89 ++++++++++++++++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100755 example/src/main/bin/init.sh

diff --git a/example/src/main/bin/init.sh b/example/src/main/bin/init.sh
new file mode 100755
index 00000000..499f0a96
--- /dev/null
+++ b/example/src/main/bin/init.sh
@@ -0,0 +1,89 @@
+#! /bin/bash
+current_path=`pwd`
+case "`uname`" in
+    Linux)
+                bin_abs_path=$(readlink -f $(dirname $0))
+                ;;
+        *)
+                bin_abs_path=`cd $(dirname $0); pwd`
+                ;;
+esac
+base=${bin_abs_path}/..
+
+# default values
+PORT=3306
+MYSQL_IP="0"
+
+# parse arguments
+while getopts "h:p:" opt; do
+    case $opt in
+        p)
+            if [[ $OPTARG -gt 0 ]]; then
+		PORT=$OPTARG
+            else
+                echo "Invalid -p option: -$OPTARG, should be positive integer >&2"
+                exit 1
+            fi
+            ;;
+       h)
+            MYSQL_IP=$OPTARG
+            ;;
+        \?)
+            printUsage
+            exit 1
+            ;;
+    esac
+done
+
+function printUsage
+{
+    cat << __Usage
+
+Initialise the instance config property file automatically. This tool will connect to Mysql master server and get the binlog file and position then update the instance config property file for you.
+
+Usage: $0 -p [port] -h [hostname]
+Options:
+    -p: mysql port, default to 3306
+    -h: mysql host ip.
+    For example:
+        $0 -p 3306 -h 172.17.0.2
+
+Enjoy!!!
+
+__Usage
+}
+
+if [[ $PORT -lt 0 ]]; then
+  echo "invalid port argument $PORT"
+  printUsage
+  exit 1
+fi
+
+# check if mysql ip is specified
+if [[ $MYSQL_IP = "0" ]]; then
+  echo '-h mysql host ip argument is required.'
+  printUsage
+  exit 1
+fi
+
+MYSQL_ADDR="$MYSQL_IP:$PORT"
+
+MASTER_STATUS=`mysql -ucanal -pcanal -h192.168.22.89 -e 'show master status' 2>/dev/null | head -n 2 | tail -n 1`
+
+LOG_FILE=`echo "$MASTER_STATUS" | cut -f 1`
+LOG_POS=`echo "$MASTER_STATUS" | cut -f 2`
+
+INSTANCE_CONF_FILE=$base/conf/example/instance.properties
+
+if [ ! -f $INSTANCE_CONF_FILE ]; then
+  echo "Can not find instance config file: $INSTANCE_CONF_FILE"
+  exit 1
+fi
+
+# replace the binlog file and position
+sed -i.bak -e "s/canal\.instance\.master\.address = .*/canal\.instance\.master\.address = $MYSQL_ADDR/" -e "s/canal\.instance\.master\.journal\.name = .*/canal\.instance\.master\.journal\.name = $LOG_FILE/" -e "s/canal\.instance\.master\.position = .*/canal\.instance\.master\.position = $LOG_POS/" $INSTANCE_CONF_FILE
+
+cat $INSTANCE_CONF_FILE
+
+echo '\n=========================================='
+echo 'Above is your instance config file, check if the settings are correct'