dynamo_db_replication.sh

#!/usr/bin/env bash

echo "Running dyndamo_db_backup.sh with arguments $@"

if [ "$#" -ne 4 ]; then
    echo "Illegal number of parameters, expected 4! [SOURCE_REGION, SOURCE_TABLE, DESTINATION_REGION, DESTINATION_TABLE]"
    exit
fi

SOURCE_REGION=$1
SOURCE_TABLE=$2
DESTINATION_REGION=$3
DESTINATION_TABLE=$4

DYNAMO_SOURCE_ENDPOINT="dynamodb.$SOURCE_REGION.amazonaws.com"
DYNAMO_DESTINATION_ENDPOINT="dynamodb.$DESTINATION_REGION.amazonaws.com"

echo "Installing required dependencies"
sudo yum install -y git java-1.8.0-openjdk-devel.x86_64 maven.noarch
export JAVA_HOME="/usr/lib/jvm/java-1.8.0"

if [ ! -d "$DIRECTORY" ]; then
  echo "Cloning and building dynamodb-cross-region-library project"
  git clone https://github.com/awslabs/dynamodb-cross-region-library.git
fi

cd dynamodb-cross-region-library && mvn clean package -DskipTests

echo "Starting replication process with values sourceEndpoint=$DYNAMO_SOURCE_ENDPOINT, sourceTable=$SOURCE_TABLE, destinationEndpoint=$DYNAMO_DESTINATION_ENDPOINT, destinationTable=$DESTINATION_TABLE"
cd target
JAR_NAME=$(ls -l *jar | grep -v original | awk '{print $9}')

JAVA_COMMAND="nohup java -jar $JAR_NAME --sourceEndpoint $DYNAMO_SOURCE_ENDPOINT --sourceTable $SOURCE_TABLE --destinationEndpoint $DYNAMO_DESTINATION_ENDPOINT  --destinationTable $DESTINATION_TABLE"
echo "Executing $JAVA_COMMAND"
$JAVA_COMMAND