fixing and simplifying circle build

The integration tests were using two different versions of weave. One to
launch the weave container, and another used by scope.

circle.yml

@@ -13,7 +13,7 @@ machine:
     CLOUDSDK_CORE_DISABLE_PROMPTS: 1
     SCOPE_UI_BUILD: $HOME/docker/scope_ui_build.tar
     WEAVE_REPO: github.com/weaveworks/weave
-    WEAVE_ROOT: "${GOPATH%%:*}/src/github.com/weaveworks/weave"
+    WEAVE_ROOT: /home/ubuntu/src/github.com/weaveworks/weave
 
 dependencies:
   cache_directories:
@@ -24,9 +24,8 @@ dependencies:
     - curl https://sdk.cloud.google.com | bash
     - test -z "$SECRET_PASSWORD" || bin/setup-circleci-secrets "$SECRET_PASSWORD"
   post:
-    - git clone --depth 1 -b master https://$WEAVE_REPO.git "$WEAVE_ROOT"
     - go get $WEAVE_REPO/...
-    - cd $WEAVE_ROOT; make testing/runner/runner
+    - make -C $WEAVE_ROOT testing/runner/runner
     - sudo apt-get install jq
     - go version
     - go clean -i net

integration/200_clustering_2_test.sh

@@ -5,6 +5,7 @@
 start_suite "Launch 2 scopes and check they cluster"
 
 weave_on $HOST2 launch
+weave_on $HOST2 launch-dns
 docker_on $HOST2 run -dit --name db1 peterbourgon/tns-db
 container_id=$(docker_on $HOST2 run -dit --name app1 --link db1:db1 peterbourgon/tns-app)
 
@@ -13,7 +14,7 @@ scope_on $HOST2 launch $HOST1
 
 SUCCESS=
 for i in {1..10}; do
-  if (curl $HOST1:4040/api/topology/containers | grep "$container_id" >/dev/null); then
+  if (curl -s $HOST1:4040/api/topology/containers | grep "$container_id" >/dev/null); then
     SUCCESS=1
     break
   fi

integration/config.sh

@@ -7,16 +7,11 @@ set -e
 export SSH_DIR="$PWD"
 export HOSTS
 
-WEAVE_REPO="github.com/weaveworks/weave"
-WEAVE_ROOT="${GOPATH%%:*}/src/$WEAVE_REPO"
-if [ ! -d "$WEAVE_ROOT" ] ; then
-  mkdir -p "$(dirname "$WEAVE_ROOT")"
-  git clone --depth 1 -b master https://$WEAVE_REPO.git "$WEAVE_ROOT"
-  go get $WEAVE_REPO/...
-fi
-if [ ! -x "$WEAVE_ROOT/testing/runner/runner" ] ; then
-  (cd "$WEAVE_ROOT" && make testing/runner/runner)
-fi
+: ${WEAVE_REPO:=github.com/weaveworks/weave}
+: ${WEAVE_ROOT:="$(go list -e -f {{.Dir}} $WEAVE_REPO)"}
+
+RUNNER="$WEAVE_ROOT/testing/runner/runner"
+[ -x "$RUNNER" ] || (echo "Could not find weave test runner at $RUNNER." >&2 ; exit 1)
 
 . "$WEAVE_ROOT/test/config.sh"
 
@@ -24,5 +19,12 @@ scope_on() {
   host=$1
   shift 1
   [ -z "$DEBUG" ] || greyly echo "Scope on $host: $@" >&2
-  run_on $host "DOCKER_HOST=tcp://$host:$DOCKER_PORT" scope "$@"
+  run_on $host DOCKER_HOST=tcp://$host:$DOCKER_PORT scope "$@"
+}
+
+weave_on() {
+  host=$1
+  shift 1
+  [ -z "$DEBUG" ] || greyly echo "Weave on $host: $@" >&2
+  run_on $host DOCKER_HOST=tcp://$host:$DOCKER_PORT weave "$@"
 }