Add copy graph script, update README.md

README.md

@@ -43,10 +43,10 @@ comic books in which they appeared.
 
     ```bash
     sudo wget http://repos.fedorapeople.org/repos/dchen/apache-maven/epel-apache-maven.repo \
-      -O /etc/yum.repos.d/epel-apache-maven.repo
+        -O /etc/yum.repos.d/epel-apache-maven.repo
     sudo sed -i s/\$releasever/6/g /etc/yum.repos.d/epel-apache-maven.repo
-    sudo yum update -y && sudo yum upgrade -y
-    sudo yum install -y apache-maven sqlite-devel git java-1.8.0-openjdk-devel
+    sudo yum update -y && sudo yum upgrade -y && sudo yum install -y \
+        apache-maven sqlite-devel git java-1.8.0-openjdk-devel
     sudo alternatives --set java /usr/lib/jvm/jre-1.8.0-openjdk.x86_64/bin/java
     sudo alternatives --set javac /usr/lib/jvm/java-1.8.0-openjdk.x86_64/bin/javac
     git clone https://github.com/awslabs/dynamodb-titan-storage-backend.git
@@ -389,10 +389,10 @@ credential configuration.
 
     ```bash
     sudo wget http://repos.fedorapeople.org/repos/dchen/apache-maven/epel-apache-maven.repo \
-      -O /etc/yum.repos.d/epel-apache-maven.repo
+        -O /etc/yum.repos.d/epel-apache-maven.repo
     sudo sed -i s/\$releasever/6/g /etc/yum.repos.d/epel-apache-maven.repo
-    sudo yum update -y && sudo yum upgrade -y
-    sudo yum install -y apache-maven sqlite-devel git java-1.8.0-openjdk-devel
+    sudo yum update -y && sudo yum upgrade -y && sudo yum install -y \
+        apache-maven sqlite-devel git java-1.8.0-openjdk-devel
     sudo alternatives --set java /usr/lib/jvm/jre-1.8.0-openjdk.x86_64/bin/java
     sudo alternatives --set javac /usr/lib/jvm/java-1.8.0-openjdk.x86_64/bin/javac
     git clone https://github.com/awslabs/dynamodb-titan-storage-backend.git

src/test/resources/copyGraph.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+wget https://github.com/amcp/dynamodb-import-export-tool/archive/createTable.zip
+unzip -q createTable.zip
+rm createTable.zip
+pushd dynamodb-import-export-tool-createTable
+mvn install
+pushd target
+
+export ORIGINAL_TABLE_ENDPOINT=$1
+export ORIGINAL_TABLE_REGION=$2
+export ORIGINAL_TABLE_PREFIX=$3
+export NEW_TABLE_ENDPOINT=$4
+export NEW_TABLE_REGION=$5
+export NEW_TABLE_PREFIX=$6
+
+declare -a tableSuffixes=("edgestore" "graphindex" "system_properties" "systemlog" "titan_ids" "txlog")
+
+for tableSuffix in "${tableSuffixes[@]}"; do
+    ORIGINAL_TABLE_NAME="${ORIGINAL_TABLE_PREFIX}_${tableSuffix}"
+    NEW_TABLE_NAME="${NEW_TABLE_PREFIX}_${tableSuffix}"
+    # prepare graph for cross-region replication
+    # https://github.com/awslabs/dynamodb-cross-region-library#step-1-optional-table-copy-bootstrapping-existing-data
+
+    # enable stream in source tables
+    aws dynamodb update-table \
+        --endpoint ${ORIGINAL_TABLE_ENDPOINT} \
+        --table-name ${ORIGINAL_TABLE_NAME} \
+        --stream-specification "StreamEnabled=true,StreamViewType=NEW_AND_OLD_IMAGES"
+
+    # bootstrap destination tables
+    java -jar dynamodb-import-export-tool-1.1.0.jar \
+        --sourceSigningRegion ${ORIGINAL_TABLE_REGION} \
+        --sourceEndpoint ${ORIGINAL_TABLE_ENDPOINT} \
+        --sourceTable ${ORIGINAL_TABLE_NAME} \
+        --destinationSigningRegion ${NEW_TABLE_REGION} \
+        --destinationEndpoint ${NEW_TABLE_ENDPOINT} \
+        --destinationTable ${NEW_TABLE_NAME} \
+        --readThroughputRatio 0.5 \
+        --writeThroughputRatio 1 \
+        --createDestination
+
+    echo "copied table ${ORIGINAL_TABLE_NAME} at ${ORIGINAL_TABLE_ENDPOINT} to ${NEW_TABLE_NAME} at ${NEW_TABLE_ENDPOINT}"
+done
+
+popd
+popd
+
+# clean up
+rm -rf dynamodb-import-export-tool-createTable