circleci: run P2P IPv4 and IPv6 tests in parallel (#4459)

.circleci/config.yml

@@ -171,11 +171,15 @@ jobs:
       GOPATH: /home/circleci/.go_workspace
     machine:
       image: circleci/classic:latest
+    parameters:
+      ipv:
+        type: integer
+        default: 4
     steps:
       - checkout
       - run: mkdir -p $GOPATH/src/github.com/tendermint
       - run: ln -sf /home/circleci/project $GOPATH/src/github.com/tendermint/tendermint
-      - run: bash test/p2p/circleci.sh
+      - run: bash test/p2p/circleci.sh << parameters.ipv >>
       - store_artifacts:
           path: /home/circleci/project/test/p2p/logs
 
@@ -425,6 +429,9 @@ workflows:
           requires:
             - setup_dependencies
       - test_p2p
+      - test_p2p:
+          name: test_p2p_ipv6
+          ipv: 6
       - upload_coverage:
           requires:
             - test_cover

test/p2p/circleci.sh

@@ -1,21 +1,26 @@
 #! /bin/bash
 set -eux
 
+# Take IP version as parameter
+IPV="${1:-4}"
+
 # Get the directory of where this script is.
 SOURCE="${BASH_SOURCE[0]}"
 while [ -h "$SOURCE" ] ; do SOURCE="$(readlink "$SOURCE")"; done
 DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
 
 # Enable IPv6 support in Docker daemon
-echo
-echo "* [$(date +"%T")] enabling IPv6 stack in Docker daemon"
-cat <<'EOF' | sudo tee /etc/docker/daemon.json
+if [[ "$IPV" == "6" ]]; then
+	echo
+	echo "* [$(date +"%T")] enabling IPv6 stack in Docker daemon"
+	cat <<'EOF' | sudo tee /etc/docker/daemon.json
 {
-  "ipv6": true,
-  "fixed-cidr-v6": "2001:db8:1::/64"
+	"ipv6": true,
+	"fixed-cidr-v6": "2001:db8:1::/64"
 }
 EOF
-sudo service docker restart
+	sudo service docker restart
+fi
 
 LOGS_DIR="$DIR/logs"
 echo
@@ -42,12 +47,8 @@ if [[ "$SKIP_BUILD" == "" ]]; then
 fi
 
 echo
-echo "* [$(date +"%T")] running p2p tests on a local docker network"
-bash "$DIR/../p2p/test.sh" tester
-
-echo
-echo "* [$(date +"%T")] running IPv6 p2p tests on a local docker network"
-bash "$DIR/../p2p/test.sh" tester 6
+echo "* [$(date +"%T")] running IPv$IPV p2p tests on a local docker network"
+bash "$DIR/../p2p/test.sh" tester $IPV
 
 echo
 echo "* [$(date +"%T")] copying log files out of docker container into $LOGS_DIR"