Adding Jenkins CI script to sources

Signed-off-by: John Howard <jhoward@microsoft.com>

hack/Jenkins/W2L/setup.sh

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+# Jenkins CI script for Windows to Linux CI.
+# Heavily modified by John Howard (@jhowardmsft) December 2015 to try to make it more reliable.
+set +x
+SCRIPT_VER="4-Jan-2016 15:19 PST"
+
+# TODO to make (even) more resilient: 
+#  - Check if jq is installed
+#  - Make sure bash is v4.3 or later. Can't do until all Azure nodes on the latest version
+#  - Make sure we are not running as local system. Can't do until all Azure nodes are updated.
+#  - Error if docker versions are not equal. Can't do until all Azure nodes are updated
+#  - Error if go versions are not equal. Can't do until all Azure nodes are updated.
+#  - Error if running 32-bit posix tools. Probably can take from bash --version and check contains "x86_64"
+#  - Warn if the CI directory cannot be deleted afterwards. Otherwise turdlets are left behind
+#  - Use %systemdrive% ($SYSTEMDRIVE) rather than hard code to c: for TEMP
+#  - Consider cross builing the Windows binary and copy across. That's a bit of a heavy lift. Only reason
+#    for doing that is that it mirrors the actual release process for docker.exe which is cross-built.
+#    However, should absolutely not be a problem if built natively, so nit-picking.
+#  - Tidy up of images and containers. Either here, or in the teardown script.
+
+ec=0
+echo INFO: Started at `date`. Script version $SCRIPT_VER
+
+# get the ip
+ip="${DOCKER_HOST#*://}"
+ip="${ip%%:*}"
+
+# make sure it is the right DOCKER_HOST. No, this is not a typo, it really
+# is at port 2357. This is the daemon which is running on the Linux host.
+# The way CI works is to launch a second daemon, docker-in-docker, which
+# listens on port 2375 and is built from sources matching the PR. That's the
+# one which is tested against.
+export DOCKER_HOST="tcp://$ip:2357"
+
+# Save for use by make.sh and scripts it invokes
+export MAIN_DOCKER_HOST="$DOCKER_HOST"
+
+
+# Verify we can get the remote node to respond to _ping
+if [ $ec -eq 0 ]; then
+	reply=`curl -s http://$ip:2357/_ping`
+	if [ "$reply" != "OK" ]; then
+		ec=1
+		echo "ERROR: Failed to get OK response from Linux node at $ip:2357. It may be down."
+		echo "       Try re-running this CI job, or ask on #docker-dev or #docker-maintainers"
+		echo "       to see if the node is up and running."
+		echo
+		echo "Regular ping output for remote host below. It should reply. If not, it needs restarting."
+		ping $ip
+	else
+		echo "INFO: The Linux nodes outer daemon replied to a ping. Good!"
+	fi 
+fi
+
+# Get the version from the remote node. Note this may fail if jq is not installed.
+# That's probably worth checking to make sure, just in case.
+if [ $ec -eq 0 ]; then
+	remoteVersion=`curl -s http://$ip:2357/version | jq -c '.Version'`
+	echo "INFO: Remote daemon is running docker version $remoteVersion"
+fi
+
+# Compare versions. We should really fail if result is no 1. Output at end of script.
+if [ $ec -eq 0 ]; then
+	uniques=`docker version | grep Version | /usr/bin/sort -u | wc -l`
+fi
+
+# Make sure we are in repo
+if [ $ec -eq 0 ]; then
+	if [ ! -d hack ]; then
+		echo "ERROR: Are you sure this is being launched from a the root of docker repository?"
+		echo "       If this is a Windows CI machine, it should be c:\jenkins\gopath\src\github.com\docker\docker."
+                echo "       Current directory is `pwd`"
+		ec=1
+	fi
+fi
+
+# Get the commit has and verify we have something
+if [ $ec -eq 0 ]; then
+	export COMMITHASH=$(git rev-parse --short HEAD)
+	echo INFO: Commmit hash is $COMMITHASH
+	if [ -z $COMMITHASH ]; then
+		echo "ERROR: Failed to get commit hash. Are you sure this is a docker repository?"
+		ec=1
+	fi
+fi
+
+# Redirect to a temporary location. Check is here for local runs from Jenkins machines just in case not
+# in the right directory where the repo is cloned. We also redirect TEMP to not use the environment
+# TEMP as when running as a standard user (not local system), it otherwise exposes a bug in posix tar which
+# will cause CI to fail from Windows to Linux. Obviously it's not best practice to ever run as local system...
+if [ $ec -eq 0 ]; then
+	export TEMP=/c/CI/CI-$COMMITHASH
+	export TMP=$TMP
+	/usr/bin/mkdir -p $TEMP  # Make sure Linux mkdir for -p
+fi
+
+# Tidy up time
+if [ $ec -eq 0 ]; then
+	echo INFO: Deleting pre-existing containers and images...
+	# Force remove all containers based on a previously built image with this commit
+	! docker rm -f $(docker ps -aq --filter "ancestor=docker:$COMMITHASH") &>/dev/null
+
+	# Force remove any container with this commithash as a name
+	! docker rm -f $(docker ps -aq --filter "name=docker-$COMMITHASH") &>/dev/null
+
+	# Force remove the image if it exists
+	! docker rmi -f "docker-$COMMITHASH" &>/dev/null
+	
+	# This SHOULD never happen, but just in case, also blow away any containers
+	# that might be around. 
+	! if [ ! `docker ps -aq | wc -l` -eq 0 ]; then
+		echo WARN: There were some leftover containers. Cleaning them up.
+		! docker rm -f $(docker ps -aq)
+	fi
+fi
+
+# Provide the docker version for debugging purposes. If these fail, game over. 
+# as the Linux box isn't responding for some reason.
+if [ $ec -eq 0 ]; then
+	echo INFO: Docker version and info of the outer daemon on the Linux node
+	echo
+	docker version
+	ec=$?
+	if [ 0 -ne $ec ]; then
+		echo "ERROR: The main linux daemon does not appear to be running. Has the Linux node crashed?"
+	fi
+	echo
+fi
+
+# Same as above, but docker info
+if [ $ec -eq 0 ]; then
+	echo
+	docker info
+	ec=$?
+	if [ 0 -ne $ec ]; then
+		echo "ERROR: The main linux daemon does not appear to be running. Has the Linux node crashed?"
+	fi
+	echo
+fi
+
+# build the daemon image
+if [ $ec -eq 0 ]; then
+	echo "INFO: Running docker build on Linux host at $DOCKER_HOST"
+	set -x
+	docker build --rm --force-rm -t "docker:$COMMITHASH" .
+	ec=$?
+	set +x
+	if [ 0 -ne $ec ]; then
+		echo "ERROR: docker build failed"
+	fi
+fi
+
+# Start the docker-in-docker daemon from the image we just built
+if [ $ec -eq 0 ]; then
+	echo "INFO: Starting build of a Linux daemon to test against, and starting it..."
+	set -x
+	docker run --pid host --privileged -d --name "docker-$COMMITHASH" --net host "docker:$COMMITHASH" bash -c 'echo "INFO: Compiling" && date && hack/make.sh binary && echo "INFO: Compile complete" && date && cp bundles/$(cat VERSION)/binary/docker /bin/docker && echo "INFO: Starting daemon" && exec docker daemon -D -H tcp://0.0.0.0:2375'
+	ec=$?
+	set +x
+	if [ 0 -ne $ec ]; then
+	    	echo "ERROR: Failed to compile and start the linux daemon"
+	fi
+fi
+
+# Build locally.
+if [ $ec -eq 0 ]; then
+	echo "INFO: Starting local build of Windows binary..."
+	set -x
+	export TIMEOUT="120m"
+	export DOCKER_HOST="tcp://$ip:2375"
+	export DOCKER_TEST_HOST="tcp://$ip:2375"
+	unset DOCKER_CLIENTONLY
+	export DOCKER_REMOTE_DAEMON=1
+	hack/make.sh binary 
+	ec=$?
+	set +x
+	if [ 0 -ne $ec ]; then
+	    echo "ERROR: Build of binary on Windows failed"
+	fi
+fi
+
+# Make a local copy of the built binary and ensure that is first in our path
+if [ $ec -eq 0 ]; then
+	VERSION=$(< ./VERSION)
+	cp bundles/$VERSION/binary/docker.exe $TEMP
+	ec=$?
+	if [ 0 -ne $ec ]; then
+		echo "ERROR: Failed to copy built binary to $TEMP"
+	fi
+	export PATH=$TEMP:$PATH
+fi
+
+# Run the integration tests
+if [ $ec -eq 0 ]; then
+	echo "INFO: Running Integration tests..."
+	set -x
+	hack/make.sh test-integration-cli
+	ec=$?
+	set +x
+	if [ 0 -ne $ec ]; then
+		echo "ERROR: CLI test failed."
+		# Next line is useful, but very long winded if included
+		# docker -H=$MAIN_DOCKER_HOST logs "docker-$COMMITHASH"
+	fi
+fi
+
+# Tidy up any temporary files from the CI run
+if [ ! -z $COMMITHASH ]; then
+	rm -rf $TEMP
+fi
+
+# CI Integrity check - ensure we are using the same version of go as present in the Dockerfile
+GOVER_DOCKERFILE=`grep 'ENV GO_VERSION' Dockerfile | awk '{print $3}'`
+GOVER_INSTALLED=`go version | awk '{print $3}'`
+if [ "${GOVER_INSTALLED:2}" != "$GOVER_DOCKERFILE" ]; then
+	ec=1  # Uncomment to make CI fail once all nodes are updated.
+	echo
+	echo "---------------------------------------------------------------------------"
+	echo "ERROR: CI should be using go version $GOVER_DOCKERFILE, but is using ${GOVER_INSTALLED:2}"
+	echo "      This is currently a warning, but should (will) become an error in the future."
+	echo "---------------------------------------------------------------------------"
+	echo
+fi
+
+# Check the Linux box is running a matching version of docker
+if [ "$uniques" -ne 1 ]; then
+    ec=1  # Uncomment to make CI fail once all nodes are updated.
+	echo
+	echo "---------------------------------------------------------------------------"
+	echo "ERROR: This CI node is not running the same version of docker as the daemon."
+	echo "       This is a CI configuration issue"
+	echo "---------------------------------------------------------------------------"
+	echo
+fi
+
+# Tell the user how we did.
+if [ $ec -eq 0 ]; then
+	echo INFO: Completed successfully at `date`. 
+else
+	echo ERROR: Failed with exitcode $ec at `date`.
+fi
+exit $ec

hack/Jenkins/readme.md

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+These files under this directory are for reference only. 
+
+They are used by Jenkins for CI runs.