[FAB-8540] Add ledger persistance to first-network

This CR adds a new docker-compose-persist.yaml file which creates a
volume mount in the current directory at ./ledgers/<container> and binds
it to the ledger directory for the container.

It also adds a '-p' flag to the byfn.sh script to allow users to include
this new compose file when bringing up the network.

Change-Id: I1ee5faa33c7f0ce18fe7711f5f752d7bf18f117c
Signed-off-by: Jason Yellick <jyellick@us.ibm.com>
Signed-off-by: Surya <suryalnvs@gmail.com>

first-network/byfn.sh

@@ -48,6 +48,7 @@ function printHelp () {
   echo "    -s <dbtype> - the database backend to use: goleveldb (default) or couchdb"
   echo "    -l <language> - the chaincode language: golang (default) or node"
   echo "    -i <imagetag> - the tag to be used to launch the network (defaults to \"latest\")"
+  echo "    -p - persist the ledgers of the containers to the ./ledgers/<container> directory"
   echo
   echo "Typically, one would first generate the required certificates and "
   echo "genesis block, then bring up the network. e.g.:"
@@ -113,10 +114,20 @@ function networkUp () {
     replacePrivateKey
     generateChannelArtifacts
   fi
-  if [ "${IF_COUCHDB}" == "couchdb" ]; then
-      IMAGE_TAG=$IMAGETAG docker-compose -f $COMPOSE_FILE -f $COMPOSE_FILE_COUCH up -d 2>&1
-  else
-      IMAGE_TAG=$IMAGETAG docker-compose -f $COMPOSE_FILE up -d 2>&1
+  if $PERSIST ; then
+      echo "Persisting ledgers to ./ledgers/"
+      mkdir -p ./ledgers/
+      if [ "${IF_COUCHDB}" == "couchdb" ]; then
+          IMAGE_TAG=$IMAGETAG docker-compose -f $COMPOSE_FILE -f $COMPOSE_FILE_PERSIST -f $COMPOSE_FILE_COUCH up -d 2>&1
+      else
+          IMAGE_TAG=$IMAGETAG docker-compose -f $COMPOSE_FILE -f $COMPOSE_FILE_PERSIST up -d 2>&1
+      fi
+   else
+      if [ "${IF_COUCHDB}" == "couchdb" ]; then
+          IMAGE_TAG=$IMAGETAG docker-compose -f $COMPOSE_FILE -f $COMPOSE_FILE_COUCH up -d 2>&1
+      else
+          IMAGE_TAG=$IMAGETAG docker-compose -f $COMPOSE_FILE up -d 2>&1
+      fi
   fi
   if [ $? -ne 0 ]; then
     echo "ERROR !!!! Unable to start network"
@@ -136,6 +147,8 @@ function networkDown () {
   docker-compose -f $COMPOSE_FILE -f $COMPOSE_FILE_COUCH down
   # Don't remove containers, images, etc if restarting
   if [ "$MODE" != "restart" ]; then
+    #Delete any persisted ledgers
+    docker run -v $PWD:/tmp/first-network --rm hyperledger/fabric-tools:$IMAGETAG rm -Rf /tmp/first-network/ledgers
     #Cleanup the chaincode containers
     clearContainers
     #Cleanup images
@@ -326,6 +339,9 @@ COMPOSE_FILE_COUCH=docker-compose-couch.yaml
 LANGUAGE=golang
 # default image tag
 IMAGETAG="latest"
+# By default, to not use volume mounts for the ledgers
+PERSIST="false"
+COMPOSE_FILE_PERSIST=docker-compose-persist.yaml
 # Parse commandline args
 if [ "$1" = "-m" ];then	# supports old usage, muscle memory is powerful!
     shift
@@ -345,7 +361,7 @@ else
   exit 1
 fi
 
-while getopts "h?c:t:d:f:s:l:i:" opt; do
+while getopts "h?m:c:t:d:f:s:l:i:p" opt; do
   case "$opt" in
     h|\?)
       printHelp
@@ -365,6 +381,8 @@ while getopts "h?c:t:d:f:s:l:i:" opt; do
     ;;
     i)  IMAGETAG=`uname -m`"-"$OPTARG
     ;;
+    p)  PERSIST=true
+    ;;
   esac
 done
 

first-network/docker-compose-persist.yaml

@@ -0,0 +1,31 @@
+# Copyright IBM Corp. All Rights Reserved.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+version: '2'
+
+networks:
+  byfn:
+
+services:
+
+  orderer.example.com:
+    volumes:
+      - ./ledgers/orderer.example.com:/var/hyperledger/production/orderer
+
+  peer0.org1.example.com:
+    volumes:
+      - ./ledgers/peer0.org1.example.com:/var/hyperledger/production
+
+  peer1.org1.example.com:
+    volumes:
+      - ./ledgers/peer1.org1.example.com:/var/hyperledger/production
+
+  peer0.org2.example.com:
+    volumes:
+      - ./ledgers/peer0.org2.example.com:/var/hyperledger/production
+
+  peer1.org2.example.com:
+    volumes:
+      - ./ledgers/peer1.org2.example.com:/var/hyperledger/production