Merge pull request #1 from zelcash/zelserverbootstrap

Zelserverbootstrap

Author: Cabecinha84

initialize-db.sh

@@ -1,11 +1,39 @@
 #!/usr/bin/env bash
 
-DBURL="https://s3.us-east-2.amazonaws.com/node-dbs.chainweb.com/db-chainweb-node-ubuntu.18.04-latest.tar.gz"
-DBDIR="/data/chainweb-db"
+DBDIR="/data/chainweb-db/0"
+# Double check if dbdir already exists, only download bootstrap if it doesn't
+if [ -d $DBDIR ] 
+then
+	echo "Directory $DBDIR already exists, we will not download any bootstrap, if you want to download the bootstrap you need to delete the folder first" 
+else
+	echo "$DBDIR does not exists, lets download the bootstrap"
+	# Getting Kadena bootstrap from Zel Servers
+	BOOTSTRAPLOCATIONS[0]="https://cdn-1.fluxos.network/zelapps/zelshare/getfile/db-chainweb-node-ubuntu.18.04-latest.tar.gz"
+	BOOTSTRAPLOCATIONS[1]="https://cdn-2.fluxos.network/db-chainweb-node-ubuntu.18.04-latest.tar.gz"
+	BOOTSTRAPLOCATIONS[2]="https://cdn-3.fluxos.network/zelapps/zelshare/getfile/db-chainweb-node-ubuntu.18.04-latest.tar.gz"
+	BOOTSTRAPLOCATIONS[3]="https://cdn-4.fluxos.network/zelapps/zelshare/getfile/db-chainweb-node-ubuntu.18.04-latest.tar.gz"
+	
+	httpstatus=0
+	retry=0
+	while [ $httpstatus != "200" ] && [ "$retry" -lt 3 ]
+	do
+	  index=$(shuf -i 0-3 -n 1)
+	  echo "Testing bootstrap location ${BOOTSTRAPLOCATIONS[$index]}"
+	  httpstatus=$(curl --write-out '%{http_code}' --silent --connect-timeout 5 --head --output /dev/null ${BOOTSTRAPLOCATIONS[$index]})
+	  echo "Http status $httpstatus"
+	  retry=`expr $retry + 1`
+	done
 
-# 
-
-# Install database
-mkdir -p "$DBDIR/0" && \
-curl "$DBURL" | tar -xzC "$DBDIR/0"
+	if [ $httpstatus == "200" ] 
+	then
+		echo "Bootstrap location valid"
+		echo "Downloading bootstrap and extract it to $DBDIR"
+		# Install database
+		mkdir -p "$DBDIR" && \
+		curl "${BOOTSTRAPLOCATIONS[$index]}" | tar -xzC "$DBDIR"
 
+    echo "Bootstrap downloaded and extracted"
+	else
+		echo "None bootstrap was found, will download blockchain from node peers"
+	fi
+fi