build: add 'make coveralls' to upload code coverage to Coveralls

GLOCKFILE

@@ -1,3 +1,4 @@
+cmd github.com/axw/gocov/gocov
 cmd github.com/client9/misspell/cmd/misspell
 cmd github.com/cockroachdb/c-protobuf/cmd/protoc
 cmd github.com/cockroachdb/cockroach/cmd/protoc-gen-gogoroach
@@ -8,6 +9,7 @@ cmd github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway
 cmd github.com/jteeuwen/go-bindata/go-bindata
 cmd github.com/kisielk/errcheck
 cmd github.com/kkaneda/returncheck
+cmd github.com/mattn/goveralls
 cmd github.com/mibk/dupl
 cmd github.com/opennota/check/cmd/varcheck
 cmd github.com/robfig/glock
@@ -19,6 +21,7 @@ cmd honnef.co/go/unused/cmd/unused
 github.com/Sirupsen/logrus f3cfb454f4c209e6668c95216c4744b8fddb2356
 github.com/VividCortex/ewma 8b9f1311551e712ea8a06b494238b8a2351e1c33
 github.com/agtorre/gocolorize f42b554bf7f006936130c9bb4f971afd2d87f671
+github.com/axw/gocov 54b98cfcac0c63fb3f9bd8e7ad241b724d4e985b
 github.com/biogo/store 913427a1d5e89604e50ea1db0f28f34966d61602
 github.com/chzyer/readline 683bf8ff7cd77265a852553c3c3e37a464339049
 github.com/client9/misspell 940f19ff686fdd0ee8395209994d4e243cb81e37
@@ -58,6 +61,7 @@ github.com/lib/pq 4dd446efc17690bc53e154025146f73203b18309
 github.com/lightstep/lightstep-tracer-go 42c31c53ad6e190563d3a733155a43f10f0691f8
 github.com/mattn/go-isatty 56b76bdf51f7708750eac80fa38b952bb9f32639
 github.com/mattn/go-runewidth d6bea18f789704b5f83375793155289da36a3c7f
+github.com/mattn/goveralls f4d273b02ce1b4e48acf3662b717aa987bfc4118
 github.com/matttproud/golang_protobuf_extensions c12348ce28de40eed0136aa2b644d0ee0650e56c
 github.com/mibk/dupl 415e882ea21ca7012cc49906cb338f34d2d4b4d6
 github.com/montanaflynn/stats 60dcacf48f43d6dd654d0ed94120ff5806c5ca5c

Makefile

@@ -235,6 +235,10 @@ $(GLOCK):
 	@unset GIT_WORK_TREE; $(GLOCK) sync github.com/cockroachdb/cockroach
 	touch $@
 
+.PHONY: coveralls
+coveralls:
+	@build/coveralls.sh
+
 include .bootstrap
 
 endif

build/coveralls.sh

@@ -0,0 +1,35 @@
+if [ -n "${CIRCLE_ARTIFACTS-}" ]; then
+  outdir="${CIRCLE_ARTIFACTS}"
+elif [ -n "${TMPDIR-}" ]; then
+  outdir="${TMPDIR}"
+else
+  outdir="/tmp"
+fi
+
+coverage_dir="${outdir}/coverage"
+coverage_profile="${coverage_dir}/coverage.out"
+coverage_mode=set
+
+rm -rf "$coverage_dir"
+mkdir -p "$coverage_dir"
+
+# Run "make coverage" on each package.
+for pkg in $(go list ./...); do
+    f="${coverage_dir}/$(echo $pkg | tr / -).cover"
+    touch $f
+    time ${builder} make coverage \
+        PKG="$pkg" \
+        TESTFLAGS="-v -coverprofile=$f -covermode=$coverage_mode" | \
+        tee "${outdir}/coverage.log"
+done
+
+# Merge coverage profiles.
+echo "mode: $coverage_mode" > "$coverage_profile"
+grep -h -v "^mode:" "$coverage_dir"/*.cover >> "$coverage_profile"
+
+# Upload profiles to Coveralls.
+goveralls \
+    -coverprofile="$coverage_profile" \
+    -ignore='*/*.pb.go,*/*/*.pb.go' \
+    -service=teamcity \
+    -repotoken=$COVERALLS_TOKEN