Merge pull request #3605 from jtattermusch/interop_improvements

Build and run per-language containers for interop tests

17 files changed, 1123 insertions, 247 deletions

diff --git a/tools/jenkins/build_docker_and_run_interop_tests.sh b/tools/jenkins/build_docker_and_run_interop_tests.sh
deleted file mode 100755
index d2d56d947b..0000000000
--- a/tools/jenkins/build_docker_and_run_interop_tests.sh
+++ /dev/null
@@ -1,111 +0,0 @@
-#!/bin/bash
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-#
-# This script is invoked by run_interop_tests.py to accommodate
-# "interop tests under docker" scenario. You should never need to call this
-# script on your own.
-
-set -ex
-
-cd `dirname $0`/../..
-git_root=`pwd`
-cd -
-
-mkdir -p /tmp/ccache
-
-# Use image name based on Dockerfile checksum
-DOCKER_IMAGE_NAME=grpc_jenkins_slave${docker_suffix}_`sha1sum tools/jenkins/grpc_jenkins_slave/Dockerfile | cut -f1 -d\ `
-
-# Make sure docker image has been built. Should be instantaneous if so.
-docker build -t $DOCKER_IMAGE_NAME tools/jenkins/grpc_jenkins_slave$docker_suffix
-
-# Create a local branch so the child Docker script won't complain
-git branch -f jenkins-docker
-
-# Make sure the CID files are gone.
-rm -f prepare.cid server.cid client.cid
-
-# Prepare image for interop tests
-docker run \
-  -e CCACHE_DIR=/tmp/ccache \
-  -i $TTY_FLAG \
-  -v "$git_root:/var/local/jenkins/grpc" \
-  -v /tmp/ccache:/tmp/ccache \
-  --cidfile=prepare.cid \
-  $DOCKER_IMAGE_NAME \
-  bash -l /var/local/jenkins/grpc/tools/jenkins/docker_prepare_interop_tests.sh || DOCKER_FAILED="true"
-
-PREPARE_CID=`cat prepare.cid`
-
-# Create image from the container, we will spawn one docker for clients
-# and one for servers.
-INTEROP_IMAGE=interop_`uuidgen`
-docker commit $PREPARE_CID $INTEROP_IMAGE
-# remove container, possibly killing it first
-docker rm -f $PREPARE_CID || true
-echo "Successfully built image $INTEROP_IMAGE"
-
-# run interop servers under docker in the background
-docker run \
-  -d -i \
-  $SERVERS_DOCKER_EXTRA_ARGS \
-  --cidfile=server.cid \
-  $INTEROP_IMAGE bash -l /var/local/git/grpc/tools/jenkins/docker_run_interop_servers.sh
-
-SERVER_CID=`cat server.cid`
-
-SERVER_PORTS=""
-for tuple in $SERVER_PORT_TUPLES
-do
-  # lookup under which port docker exposes given internal port
-  exposed_port=`docker port $SERVER_CID ${tuple#*:} | awk -F ":" '{print $NF}'`
-
-  # override the port for corresponding cloud_to_cloud server
-  SERVER_PORTS+=" --override_server ${tuple%:*}=localhost:$exposed_port"
-  echo "${tuple%:*} server is exposed under port $exposed_port"
-done
-
-# run interop clients
-docker run \
-  -e "RUN_TESTS_COMMAND=$RUN_TESTS_COMMAND $SERVER_PORTS" \
-  -w /var/local/git/grpc \
-  -i $TTY_FLAG \
-  --net=host \
-  --cidfile=client.cid \
-  $INTEROP_IMAGE bash -l /var/local/git/grpc/tools/jenkins/docker_run_interop_tests.sh || DOCKER_FAILED="true"
-
-CLIENT_CID=`cat client.cid`
-
-echo "killing and removing server container $SERVER_CID"
-docker rm -f $SERVER_CID || true
-
-docker cp $CLIENT_CID:/var/local/git/grpc/report.xml $git_root
-docker rm -f $CLIENT_CID || true
-docker rmi -f $DOCKER_IMAGE_NAME || true
diff --git a/tools/jenkins/build_interop_image.sh b/tools/jenkins/build_interop_image.sh
new file mode 100755
index 0000000000..b5958588f2
--- /dev/null
+++ b/tools/jenkins/build_interop_image.sh
@@ -0,0 +1,93 @@
+#!/bin/bash
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# This script is invoked by run_interop_tests.py to build the docker image
+# for interop testing. You should never need to call this script on your own.
+
+set -x
+
+cd `dirname $0`/../..
+GRPC_ROOT=`pwd`
+MOUNT_ARGS="-v $GRPC_ROOT:/var/local/jenkins/grpc"
+
+GRPC_JAVA_ROOT=`cd ../grpc-java && pwd`
+if [ "$GRPC_JAVA_ROOT" != "" ]
+then
+  MOUNT_ARGS+=" -v $GRPC_JAVA_ROOT:/var/local/jenkins/grpc-java"
+else
+  echo "WARNING: grpc-java not found, it won't be mounted to the docker container."
+fi
+
+GRPC_GO_ROOT=`cd ../grpc-go && pwd`
+if [ "$GRPC_GO_ROOT" != "" ]
+then
+  MOUNT_ARGS+=" -v $GRPC_GO_ROOT:/var/local/jenkins/grpc-go"
+else
+  echo "WARNING: grpc-go not found, it won't be mounted to the docker container."
+fi
+
+mkdir -p /tmp/ccache
+
+# Params:
+#  INTEROP_IMAGE - name of tag of the final interop image
+#  BASE_NAME - base name used to locate the base Dockerfile and build script
+#  TTY_FLAG - optional -t flag to make docker allocate tty.
+
+# Use image name based on Dockerfile checksum
+BASE_IMAGE=${BASE_NAME}_base:`sha1sum tools/jenkins/$BASE_NAME/Dockerfile | cut -f1 -d\ `
+
+# Make sure base docker image has been built. Should be instantaneous if so.
+docker build -t $BASE_IMAGE --force-rm=true tools/jenkins/$BASE_NAME || exit $?
+
+# Create a local branch so the child Docker script won't complain
+git branch -f jenkins-docker
+
+CIDFILE=`mktemp -u --suffix=.cid`
+
+# Prepare image for interop tests, commit it on success.
+(docker run \
+  -e CCACHE_DIR=/tmp/ccache \
+  -i $TTY_FLAG \
+  $MOUNT_ARGS \
+  -v /tmp/ccache:/tmp/ccache \
+  --cidfile=$CIDFILE \
+  $BASE_IMAGE \
+  bash -l /var/local/jenkins/grpc/tools/jenkins/$BASE_NAME/build_interop.sh \
+  && docker commit `cat $CIDFILE` $INTEROP_IMAGE \
+  && echo "Successfully built image $INTEROP_IMAGE")
+EXITCODE=$?
+
+# remove intermediate container, possibly killing it first
+docker rm -f `cat $CIDFILE`
+
+# remove the cidfile
+rm -rf `cat $CIDFILE`
+
+exit $EXITCODE
diff --git a/tools/jenkins/grpc_interop_csharp/Dockerfile b/tools/jenkins/grpc_interop_csharp/Dockerfile
new file mode 100644
index 0000000000..3789cd3203
--- /dev/null
+++ b/tools/jenkins/grpc_interop_csharp/Dockerfile
@@ -0,0 +1,92 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# A work-in-progress Dockerfile that allows running gRPC test suites
+# inside a docker container.
+
+FROM debian:jessie
+
+# Install Git.
+RUN apt-get update && apt-get install -y \
+  autoconf \
+  autotools-dev \
+  build-essential \
+  bzip2 \
+  ccache \
+  curl \
+  gcc \
+  gcc-multilib \
+  git \
+  gyp \
+  libc6 \
+  libc6-dbg \
+  libc6-dev \
+  libgtest-dev \
+  libtool \
+  make \
+  strace \
+  python-dev \
+  python-setuptools \
+  python-yaml \
+  telnet \
+  unzip \
+  wget \
+  zip && apt-get clean
+
+# Prepare ccache
+RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
+RUN ln -s /usr/bin/ccache /usr/local/bin/g++
+RUN ln -s /usr/bin/ccache /usr/local/bin/cc
+RUN ln -s /usr/bin/ccache /usr/local/bin/c++
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang++
+
+#################
+# C# dependencies
+
+# Update to a newer version of mono
+RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
+RUN echo "deb http://download.mono-project.com/repo/debian wheezy main" | tee /etc/apt/sources.list.d/mono-xamarin.list
+RUN echo "deb http://download.mono-project.com/repo/debian wheezy-apache24-compat main" | tee -a /etc/apt/sources.list.d/mono-xamarin.list
+RUN echo "deb http://download.mono-project.com/repo/debian wheezy-libjpeg62-compat main" | tee -a /etc/apt/sources.list.d/mono-xamarin.list
+RUN echo "deb http://download.mono-project.com/repo/debian wheezy-libtiff-compat main" | tee -a /etc/apt/sources.list.d/mono-xamarin.list
+
+# Install dependencies
+RUN apt-get update && apt-get -y dist-upgrade && apt-get install -y \
+    mono-devel \
+    nunit \
+    nunit-console \
+    monodevelop
+
+# Download NuGet
+RUN cd /var/local && wget www.nuget.org/NuGet.exe
+ENV NUGET mono /var/local/NuGet.exe
+
+# Define the default command.
+CMD ["bash"]
diff --git a/tools/jenkins/grpc_interop_csharp/build_interop.sh b/tools/jenkins/grpc_interop_csharp/build_interop.sh
new file mode 100755
index 0000000000..e91cbed81e
--- /dev/null
+++ b/tools/jenkins/grpc_interop_csharp/build_interop.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Builds C# interop server and client in a base image.
+set -e
+
+mkdir -p /var/local/git
+git clone --recursive /var/local/jenkins/grpc /var/local/git/grpc
+
+cd /var/local/git/grpc
+
+make install-certs
+
+# build C# interop client & server
+make install_grpc_csharp_ext
+(cd src/csharp && mono /var/local/NuGet.exe restore Grpc.sln)
+(cd src/csharp && xbuild Grpc.sln)
diff --git a/tools/jenkins/grpc_interop_cxx/Dockerfile b/tools/jenkins/grpc_interop_cxx/Dockerfile
new file mode 100644
index 0000000000..1fa1907533
--- /dev/null
+++ b/tools/jenkins/grpc_interop_cxx/Dockerfile
@@ -0,0 +1,75 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# A work-in-progress Dockerfile that allows running gRPC test suites
+# inside a docker container.
+
+FROM debian:jessie
+
+# Install Git.
+RUN apt-get update && apt-get install -y \
+  autoconf \
+  autotools-dev \
+  build-essential \
+  bzip2 \
+  ccache \
+  curl \
+  gcc \
+  gcc-multilib \
+  git \
+  gyp \
+  libc6 \
+  libc6-dbg \
+  libc6-dev \
+  libgtest-dev \
+  libtool \
+  make \
+  strace \
+  python-dev \
+  python-setuptools \
+  python-yaml \
+  telnet \
+  unzip \
+  wget \
+  zip && apt-get clean
+
+# Prepare ccache
+RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
+RUN ln -s /usr/bin/ccache /usr/local/bin/g++
+RUN ln -s /usr/bin/ccache /usr/local/bin/cc
+RUN ln -s /usr/bin/ccache /usr/local/bin/c++
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang++
+
+##################
+# C++ dependencies
+RUN apt-get update && apt-get -y install libgflags-dev libgtest-dev libc++-dev clang
+
+# Define the default command.
+CMD ["bash"]
diff --git a/tools/jenkins/grpc_interop_cxx/build_interop.sh b/tools/jenkins/grpc_interop_cxx/build_interop.sh
new file mode 100755
index 0000000000..4163e11ecc
--- /dev/null
+++ b/tools/jenkins/grpc_interop_cxx/build_interop.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Builds C++ interop server and client in a base image.
+set -e
+
+mkdir -p /var/local/git
+git clone --recursive /var/local/jenkins/grpc /var/local/git/grpc
+
+cd /var/local/git/grpc
+
+make install-certs
+
+# build C++ interop client & server
+make interop_client interop_server
diff --git a/tools/jenkins/grpc_interop_java/Dockerfile b/tools/jenkins/grpc_interop_java/Dockerfile
new file mode 100644
index 0000000000..1ec24a95e3
--- /dev/null
+++ b/tools/jenkins/grpc_interop_java/Dockerfile
@@ -0,0 +1,58 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+FROM debian:jessie
+
+# Install JDK 8 and Git
+#
+# TODO(temiola): simplify this if/when a simpler process is available.
+#
+RUN echo oracle-java8-installer shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections && \
+  echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee /etc/apt/sources.list.d/webupd8team-java.list && \
+  echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list && \
+  apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886 && \
+  apt-get update && \
+  apt-get -y install \
+      git \
+      libapr1 \
+      oracle-java8-installer \
+      && \
+  apt-get clean && rm -r /var/cache/oracle-jdk8-installer/
+
+ENV JAVA_HOME /usr/lib/jvm/java-8-oracle
+ENV PATH $PATH:$JAVA_HOME/bin
+
+# Trigger download of as many Gradle artifacts as possible.
+RUN git clone --recursive --depth 1 https://github.com/grpc/grpc-java.git && \
+  cd grpc-java && \
+  ./gradlew build -PskipCodegen=true && \
+  rm -r "$(pwd)"
+
+# Define the default command.
+CMD ["bash"]
diff --git a/tools/jenkins/docker_run_interop_tests.sh b/tools/jenkins/grpc_interop_java/build_interop.sh
index 29970afb25..4ee2f44e3d 100755
--- a/tools/jenkins/docker_run_interop_tests.sh
+++ b/tools/jenkins/grpc_interop_java/build_interop.sh
@@ -28,12 +28,12 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
-# This script is invoked by build_docker_and_run_interop_tests.sh inside
-# a docker container. You should never need to call this script on your own.
+# Builds Java interop server and client in a base image.
 set -e
 
-nvm use 0.12
-rvm use ruby-2.1
+mkdir -p /var/local/git
+git clone --recursive --depth 1 /var/local/jenkins/grpc-java /var/local/git/grpc-java
 
-# run the cloud-to-prod interop tests
-$RUN_TESTS_COMMAND
+cd /var/local/git/grpc-java
+
+./gradlew :grpc-interop-testing:installDist -PskipCodegen=true
diff --git a/tools/jenkins/grpc_interop_node/Dockerfile b/tools/jenkins/grpc_interop_node/Dockerfile
new file mode 100644
index 0000000000..587227b942
--- /dev/null
+++ b/tools/jenkins/grpc_interop_node/Dockerfile
@@ -0,0 +1,79 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# A work-in-progress Dockerfile that allows running gRPC test suites
+# inside a docker container.
+
+FROM debian:jessie
+
+# Install Git.
+RUN apt-get update && apt-get install -y \
+  autoconf \
+  autotools-dev \
+  build-essential \
+  bzip2 \
+  ccache \
+  curl \
+  gcc \
+  gcc-multilib \
+  git \
+  gyp \
+  libc6 \
+  libc6-dbg \
+  libc6-dev \
+  libgtest-dev \
+  libtool \
+  make \
+  strace \
+  python-dev \
+  python-setuptools \
+  python-yaml \
+  telnet \
+  unzip \
+  wget \
+  zip && apt-get clean
+
+# Prepare ccache
+RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
+RUN ln -s /usr/bin/ccache /usr/local/bin/g++
+RUN ln -s /usr/bin/ccache /usr/local/bin/cc
+RUN ln -s /usr/bin/ccache /usr/local/bin/c++
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang++
+
+##################
+# Node dependencies
+
+# Install nvm
+RUN touch .profile
+RUN curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.25.4/install.sh | bash
+RUN /bin/bash -l -c "nvm install 0.12"
+
+# Define the default command.
+CMD ["bash"]
diff --git a/tools/jenkins/docker_run_interop_servers.sh b/tools/jenkins/grpc_interop_node/build_interop.sh
index 9f29a65aaa..55e2a4081b 100755
--- a/tools/jenkins/docker_run_interop_servers.sh
+++ b/tools/jenkins/grpc_interop_node/build_interop.sh
@@ -28,23 +28,19 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
-# This script is invoked by run_jekins.sh. It contains the test logic
-# that should run inside a docker container.
+# Builds Node interop server and client in a base image.
 set -e
 
+mkdir -p /var/local/git
+git clone --recursive /var/local/jenkins/grpc /var/local/git/grpc
+
 cd /var/local/git/grpc
 nvm use 0.12
-rvm use ruby-2.1
-
-# If port env variable is set, run corresponding interop server on given port in background.
-# TODO(jtattermusch): ideally, run_interop_tests.py would generate the commands to run servers.
-
-[ -z "${SERVER_PORT_cxx}" ] || bins/opt/interop_server --enable_ssl --port=${SERVER_PORT_cxx} &
-
-[ -z "${SERVER_PORT_node}" ] || node src/node/interop/interop_server.js --use_tls=true --port=${SERVER_PORT_node} &
-
-[ -z "${SERVER_PORT_ruby}" ] || ruby src/ruby/bin/interop/interop_server.rb --use_tls --port=${SERVER_PORT_ruby} &
+nvm alias default 0.12  # prevent the need to run 'nvm use' in every shell
 
-[ -z "${SERVER_PORT_csharp}" ] || (cd src/csharp/Grpc.IntegrationTesting.Server/bin/Debug && mono Grpc.IntegrationTesting.Server.exe --use_tls --port=${SERVER_PORT_csharp}) &
+make install-certs
 
-sleep infinity
+# build Node interop client & server
+npm install -g node-gyp
+make install_c -C /var/local/git/grpc
+(cd src/node && npm install && node-gyp rebuild)
diff --git a/tools/jenkins/grpc_interop_php/Dockerfile b/tools/jenkins/grpc_interop_php/Dockerfile
new file mode 100644
index 0000000000..0edc3c174d
--- /dev/null
+++ b/tools/jenkins/grpc_interop_php/Dockerfile
@@ -0,0 +1,112 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# A work-in-progress Dockerfile that allows running gRPC test suites
+# inside a docker container.
+
+FROM debian:jessie
+
+# Install Git.
+RUN apt-get update && apt-get install -y \
+  autoconf \
+  autotools-dev \
+  build-essential \
+  bzip2 \
+  ccache \
+  curl \
+  gcc \
+  gcc-multilib \
+  git \
+  gyp \
+  libc6 \
+  libc6-dbg \
+  libc6-dev \
+  libgtest-dev \
+  libtool \
+  make \
+  strace \
+  python-dev \
+  python-setuptools \
+  python-yaml \
+  telnet \
+  unzip \
+  wget \
+  zip && apt-get clean
+
+# Prepare ccache
+RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
+RUN ln -s /usr/bin/ccache /usr/local/bin/g++
+RUN ln -s /usr/bin/ccache /usr/local/bin/cc
+RUN ln -s /usr/bin/ccache /usr/local/bin/c++
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang++
+
+##################
+# Ruby dependencies
+
+# Install rvm
+RUN gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
+RUN \curl -sSL https://get.rvm.io | bash -s stable
+
+# Install Ruby 2.1
+RUN /bin/bash -l -c "rvm install ruby-2.1"
+RUN /bin/bash -l -c "rvm use --default ruby-2.1"
+RUN /bin/bash -l -c "echo 'gem: --no-ri --no-rdoc' > ~/.gemrc"
+RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
+RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.1' >> ~/.bashrc"
+RUN /bin/bash -l -c "gem install bundler --no-ri --no-rdoc"
+
+##################
+# PHP dependencies
+
+# Install dependencies
+
+RUN /bin/bash -l -c "echo 'deb http://packages.dotdeb.org wheezy-php55 all' \
+    >> /etc/apt/sources.list.d/dotdeb.list"
+RUN /bin/bash -l -c "echo 'deb-src http://packages.dotdeb.org wheezy-php55 all' \
+    >> /etc/apt/sources.list.d/dotdeb.list"
+RUN wget http://www.dotdeb.org/dotdeb.gpg -O- | apt-key add -
+
+RUN apt-get update && apt-get install -y \
+    git php5 php5-dev phpunit unzip
+
+# ronn: a ruby tool used to convert markdown to man pages, used during the
+# install of Protobuf extensions
+#
+# rake: a ruby version of make used to build the PHP Protobuf extension
+RUN /bin/bash -l -c "rvm all do gem install ronn rake"
+
+ENV DEBIAN_FRONTEND noniteractive
+
+# Install composer
+RUN curl -sS https://getcomposer.org/installer | php
+RUN mv composer.phar /usr/local/bin/composer
+
+# Define the default command.
+CMD ["bash"]
diff --git a/tools/jenkins/docker_prepare_interop_tests.sh b/tools/jenkins/grpc_interop_php/build_interop.sh
index a1fe0b72d2..745dea845d 100755
--- a/tools/jenkins/docker_prepare_interop_tests.sh
+++ b/tools/jenkins/grpc_interop_php/build_interop.sh
@@ -28,52 +28,32 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
-# This script is invoked by run_jekins.sh. It contains the test logic
-# that should run inside a docker container.
+# Builds PHP interop server and client in a base image.
 set -e
 
 mkdir -p /var/local/git
 git clone --recursive /var/local/jenkins/grpc /var/local/git/grpc
 
 cd /var/local/git/grpc
-nvm use 0.12
-rvm use ruby-2.1
+rvm --default use ruby-2.1
 
-# TODO(jtattermusch): use cleaner way to install root certs
-mkdir -p /usr/local/share/grpc
-cp etc/roots.pem /usr/local/share/grpc/
+make install-certs
 
-# build C++ interop client & server
-make interop_client interop_server
+# gRPC core and protobuf need to be installed
+make install
 
-# build C# interop client & server
-make install_grpc_csharp_ext
-(cd src/csharp && mono /var/local/NuGet.exe restore Grpc.sln)
-(cd src/csharp && xbuild Grpc.sln)
-
-# build Node interop client & server
-npm install -g node-gyp
-make install_c -C /var/local/git/grpc
-(cd src/node && npm install && node-gyp rebuild)
-
-# build Ruby interop client and server
-(cd src/ruby && gem update bundler && bundle && rake compile:grpc)
-
-# TODO(jtattermusch): add python
-
-# build PHP interop client
-# TODO(jtattermusch): prerequisites for PHP should be installed sooner than here.
-# Install composer
-curl -sS https://getcomposer.org/installer | php
-mv composer.phar /usr/local/bin/composer
 # Download the patched PHP protobuf so that PHP gRPC clients can be generated
 # from proto3 schemas.
 git clone https://github.com/stanley-cheung/Protobuf-PHP.git /var/local/git/protobuf-php
+
 (cd src/php/ext/grpc && phpize && ./configure && make)
-rvm all do gem install ronn rake
+
 (cd third_party/protobuf && make install)
+
 (cd /var/local/git/protobuf-php \
   && rvm all do rake pear:package version=1.0 \
   && pear install Protobuf-1.0.tgz)
+
 (cd src/php && composer install)
+
 (cd src/php && protoc-gen-php -i tests/interop/ -o tests/interop/ tests/interop/test.proto)
diff --git a/tools/jenkins/grpc_interop_ruby/Dockerfile b/tools/jenkins/grpc_interop_ruby/Dockerfile
new file mode 100644
index 0000000000..ff201fa291
--- /dev/null
+++ b/tools/jenkins/grpc_interop_ruby/Dockerfile
@@ -0,0 +1,87 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# A work-in-progress Dockerfile that allows running gRPC test suites
+# inside a docker container.
+
+FROM debian:jessie
+
+# Install Git.
+RUN apt-get update && apt-get install -y \
+  autoconf \
+  autotools-dev \
+  build-essential \
+  bzip2 \
+  ccache \
+  curl \
+  gcc \
+  gcc-multilib \
+  git \
+  gyp \
+  libc6 \
+  libc6-dbg \
+  libc6-dev \
+  libgtest-dev \
+  libtool \
+  make \
+  strace \
+  python-dev \
+  python-setuptools \
+  python-yaml \
+  telnet \
+  unzip \
+  wget \
+  zip && apt-get clean
+
+# Prepare ccache
+RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
+RUN ln -s /usr/bin/ccache /usr/local/bin/g++
+RUN ln -s /usr/bin/ccache /usr/local/bin/cc
+RUN ln -s /usr/bin/ccache /usr/local/bin/c++
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang
+RUN ln -s /usr/bin/ccache /usr/local/bin/clang++
+
+
+##################
+# Ruby dependencies
+
+# Install rvm
+RUN gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
+RUN \curl -sSL https://get.rvm.io | bash -s stable
+
+# Install Ruby 2.1
+RUN /bin/bash -l -c "rvm install ruby-2.1"
+RUN /bin/bash -l -c "rvm use --default ruby-2.1"
+RUN /bin/bash -l -c "echo 'gem: --no-ri --no-rdoc' > ~/.gemrc"
+RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
+RUN /bin/bash -l -c "echo 'rvm --default use ruby-2.1' >> ~/.bashrc"
+RUN /bin/bash -l -c "gem install bundler --no-ri --no-rdoc"
+
+# Define the default command.
+CMD ["bash"]
diff --git a/tools/jenkins/grpc_interop_ruby/build_interop.sh b/tools/jenkins/grpc_interop_ruby/build_interop.sh
new file mode 100755
index 0000000000..7d407e7d0a
--- /dev/null
+++ b/tools/jenkins/grpc_interop_ruby/build_interop.sh
@@ -0,0 +1,43 @@
+#!/bin/bash
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Builds Ruby interop server and client in a base image.
+set -e
+
+mkdir -p /var/local/git
+git clone --recursive /var/local/jenkins/grpc /var/local/git/grpc
+
+cd /var/local/git/grpc
+rvm --default use ruby-2.1
+
+make install-certs
+
+# build Ruby interop client and server
+(cd src/ruby && gem update bundler && bundle && rake compile:grpc)
diff --git a/tools/run_tests/dockerjob.py b/tools/run_tests/dockerjob.py
new file mode 100755
index 0000000000..11686d46b0
--- /dev/null
+++ b/tools/run_tests/dockerjob.py
@@ -0,0 +1,115 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Helpers to run docker instances as jobs."""
+
+import jobset
+import tempfile
+import time
+import uuid
+import os
+import subprocess
+
+_DEVNULL = open(os.devnull, 'w')
+
+def wait_for_file(filepath, timeout_seconds=15):
+  """Wait until given file exists and returns its content."""
+  started = time.time()
+  while time.time() - started < timeout_seconds:
+    if os.path.isfile(filepath):
+      with open(filepath, 'r') as f:
+        content = f.read()
+        # make sure we don't return empty content
+        if content:
+          return content
+    time.sleep(1)
+  raise Exception('Failed to read file %s.' % filepath)
+
+
+def docker_mapped_port(cid, port):
+  """Get port mapped to internal given internal port for given container."""
+  output = subprocess.check_output('docker port %s %s' % (cid, port), shell=True)
+  return int(output.split(':', 2)[1])
+
+
+def finish_jobs(jobs):
+  """Kills given docker containers and waits for corresponding jobs to finish"""
+  for job in jobs:
+    job.kill(suppress_failure=True)
+
+  while any(job.is_running() for job in jobs):
+    time.sleep(1)
+
+
+def image_exists(image):
+  """Returns True if given docker image exists."""
+  return subprocess.call(['docker','inspect', image],
+                         stdout=_DEVNULL,
+                         stderr=_DEVNULL) == 0
+
+
+def remove_image(image, skip_nonexistent=False, max_retries=10):
+  """Attempts to remove docker image with retries."""
+  if skip_nonexistent and not image_exists(image):
+    return True
+  for attempt in range(0, max_retries):
+    if subprocess.call(['docker','rmi', '-f', image]) == 0:
+      return True
+    time.sleep(2)
+  print 'Failed to remove docker image %s' % image
+  return False
+
+
+class DockerJob:
+  """Encapsulates a job"""
+
+  def __init__(self, spec):
+    self._spec = spec
+    self._job = jobset.Job(spec, bin_hash=None, newline_on_success=True, travis=True, add_env={}, xml_report=None)
+    self._cidfile = spec.cidfile
+    self._cid = None
+
+  def cid(self):
+    """Gets cid of this container"""
+    if not self._cid:
+      self._cid = wait_for_file(self._cidfile)
+    return self._cid
+
+  def mapped_port(self, port):
+    return docker_mapped_port(self.cid(), port)
+
+  def kill(self, suppress_failure=False):
+    """Sends kill signal to the container."""
+    if suppress_failure:
+      self._job.suppress_failure_message()
+    return subprocess.call(['docker','kill', self.cid()]) == 0
+
+  def is_running(self):
+    """Polls a job and returns True if given job is still running."""
+    return self._job.state(jobset.NoCache()) == jobset._RUNNING
diff --git a/tools/run_tests/jobset.py b/tools/run_tests/jobset.py
index b9ec020f9e..87be703b4c 100755
--- a/tools/run_tests/jobset.py
+++ b/tools/run_tests/jobset.py
@@ -180,6 +180,7 @@ class Job(object):
                                    name=self._spec.shortname) if xml_report is not None else None
     self._retries = 0
     self._timeout_retries = 0
+    self._suppress_failure_message = False
     message('START', spec.shortname, do_newline=self._travis)
     self.start()
 
@@ -220,9 +221,10 @@ class Job(object):
           self.start()
         else:
           self._state = _FAILURE
-          message('FAILED', '%s [ret=%d, pid=%d]' % (
-              self._spec.shortname, self._process.returncode, self._process.pid),
-              stdout, do_newline=True)
+          if not self._suppress_failure_message:
+            message('FAILED', '%s [ret=%d, pid=%d]' % (
+                self._spec.shortname, self._process.returncode, self._process.pid),
+                stdout, do_newline=True)
           if self._xml_test is not None:
             ET.SubElement(self._xml_test, 'failure', message='Failure').text
       else:
@@ -254,6 +256,9 @@ class Job(object):
       self._state = _KILLED
       self._process.terminate()
 
+  def suppress_failure_message(self):
+    self._suppress_failure_message = True
+
 
 class Jobset(object):
   """Manages one run of jobs."""
diff --git a/tools/run_tests/run_interop_tests.py b/tools/run_tests/run_interop_tests.py
index 6445513fbe..46b34fea4c 100755
--- a/tools/run_tests/run_interop_tests.py
+++ b/tools/run_tests/run_interop_tests.py
@@ -31,14 +31,22 @@
 """Run interop (cross-language) tests in parallel."""
 
 import argparse
+import dockerjob
 import itertools
 import xml.etree.cElementTree as ET
 import jobset
+import multiprocessing
 import os
 import subprocess
 import sys
+import tempfile
 import time
+import uuid
 
+ROOT = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), '../..'))
+os.chdir(ROOT)
+
+_DEFAULT_SERVER_PORT=8080
 
 _CLOUD_TO_PROD_BASE_ARGS = [
     '--server_host_override=grpc-test.sandbox.google.com',
@@ -54,12 +62,15 @@ _CLOUD_TO_CLOUD_BASE_ARGS = [
 _SSL_CERT_ENV = { 'SSL_CERT_FILE':'/usr/local/share/grpc/roots.pem' }
 
 # TODO(jtatttermusch) unify usage of --use_tls and --use_tls=true
+# TODO(jtatttermusch) unify usage of --use_prod_roots and --use_test_ca
+
 
 class CXXLanguage:
 
   def __init__(self):
     self.client_cmdline_base = ['bins/opt/interop_client']
     self.client_cwd = None
+    self.server_cwd = None
 
   def cloud_to_prod_args(self):
     return (self.client_cmdline_base + _CLOUD_TO_PROD_BASE_ARGS +
@@ -72,6 +83,9 @@ class CXXLanguage:
   def cloud_to_prod_env(self):
     return None
 
+  def server_args(self):
+    return ['bins/opt/interop_server', '--use_tls=true']
+
   def __str__(self):
     return 'c++'
 
@@ -81,6 +95,7 @@ class CSharpLanguage:
   def __init__(self):
     self.client_cmdline_base = ['mono', 'Grpc.IntegrationTesting.Client.exe']
     self.client_cwd = 'src/csharp/Grpc.IntegrationTesting.Client/bin/Debug'
+    self.server_cwd = 'src/csharp/Grpc.IntegrationTesting.Server/bin/Debug'
 
   def cloud_to_prod_args(self):
     return (self.client_cmdline_base + _CLOUD_TO_PROD_BASE_ARGS +
@@ -93,15 +108,44 @@ class CSharpLanguage:
   def cloud_to_prod_env(self):
     return _SSL_CERT_ENV
 
+  def server_args(self):
+    return ['mono', 'Grpc.IntegrationTesting.Server.exe', '--use_tls']
+
   def __str__(self):
     return 'csharp'
 
 
+class JavaLanguage:
+
+  def __init__(self):
+    self.client_cmdline_base = ['./run-test-client.sh']
+    self.client_cwd = '../grpc-java'
+    self.server_cwd = '../grpc-java'
+
+  def cloud_to_prod_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_PROD_BASE_ARGS +
+            ['--use_tls=true'])
+
+  def cloud_to_cloud_args(self):
+    return (self.client_cmdline_base + _CLOUD_TO_CLOUD_BASE_ARGS +
+            ['--use_tls=true', '--use_test_ca=true'])
+
+  def cloud_to_prod_env(self):
+    return None
+
+  def server_args(self):
+    return ['./run-test-server.sh', '--use_tls=true']
+
+  def __str__(self):
+    return 'java'
+
+
 class NodeLanguage:
 
   def __init__(self):
     self.client_cmdline_base = ['node', 'src/node/interop/interop_client.js']
     self.client_cwd = None
+    self.server_cwd = None
 
   def cloud_to_prod_args(self):
     return (self.client_cmdline_base + _CLOUD_TO_PROD_BASE_ARGS +
@@ -114,6 +158,9 @@ class NodeLanguage:
   def cloud_to_prod_env(self):
     return _SSL_CERT_ENV
 
+  def server_args(self):
+    return ['node', 'src/node/interop/interop_server.js', '--use_tls=true']
+
   def __str__(self):
     return 'node'
 
@@ -144,6 +191,7 @@ class RubyLanguage:
   def __init__(self):
     self.client_cmdline_base = ['ruby', 'src/ruby/bin/interop/interop_client.rb']
     self.client_cwd = None
+    self.server_cwd = None
 
   def cloud_to_prod_args(self):
     return (self.client_cmdline_base + _CLOUD_TO_PROD_BASE_ARGS +
@@ -156,64 +204,151 @@ class RubyLanguage:
   def cloud_to_prod_env(self):
     return _SSL_CERT_ENV
 
+  def server_args(self):
+    return ['ruby', 'src/ruby/bin/interop/interop_server.rb', '--use_tls']
+
   def __str__(self):
     return 'ruby'
 
 
-# TODO(jtattermusch): add php and python once we get them working
+# TODO(jtattermusch): python once we get it working
 _LANGUAGES = {
     'c++' : CXXLanguage(),
     'csharp' : CSharpLanguage(),
+    'java' : JavaLanguage(),
     'node' : NodeLanguage(),
     'php' :  PHPLanguage(),
     'ruby' : RubyLanguage(),
 }
 
-# languages supported as cloud_to_cloud servers 
+# languages supported as cloud_to_cloud servers
 # TODO(jtattermusch): enable other languages as servers as well
-_SERVERS = { 'c++' : 8010, 'node' : 8040, 'csharp': 8070 }
+_SERVERS = ['c++', 'node', 'csharp', 'java']
 
-# TODO(jtattermusch): add empty_stream once C++ start supporting it.
+# TODO(jtattermusch): add empty_stream once PHP starts supporting it.
+# TODO(jtattermusch): add timeout_on_sleeping_server once java starts supporting it.
 # TODO(jtattermusch): add support for auth tests.
 _TEST_CASES = ['large_unary', 'empty_unary', 'ping_pong',
                'client_streaming', 'server_streaming',
-               'cancel_after_begin', 'cancel_after_first_response',
-               'timeout_on_sleeping_server']
+               'cancel_after_begin', 'cancel_after_first_response']
 
 
-def cloud_to_prod_jobspec(language, test_case):
+def docker_run_cmdline(cmdline, image, docker_args=[], cwd=None, environ=None):
+  """Wraps given cmdline array to create 'docker run' cmdline from it."""
+  docker_cmdline = ['docker', 'run', '-i', '--rm=true']
+
+  # turn environ into -e docker args
+  if environ:
+    for k,v in environ.iteritems():
+      docker_cmdline += ['-e', '%s=%s' % (k,v)]
+
+  # set working directory
+  workdir = '/var/local/git/grpc'
+  if cwd:
+    workdir = os.path.join(workdir, cwd)
+  docker_cmdline += ['-w', workdir]
+
+  docker_cmdline += docker_args + [image] + cmdline
+  return docker_cmdline
+
+
+def bash_login_cmdline(cmdline):
+  """Creates bash -l -c cmdline from args list."""
+  # Use login shell:
+  # * rvm and nvm require it
+  # * makes error messages clearer if executables are missing
+  return ['bash', '-l', '-c', ' '.join(cmdline)]
+
+
+def cloud_to_prod_jobspec(language, test_case, docker_image=None):
   """Creates jobspec for cloud-to-prod interop test"""
-  cmdline = language.cloud_to_prod_args() + ['--test_case=%s' % test_case]
+  cmdline = bash_login_cmdline(language.cloud_to_prod_args() +
+                               ['--test_case=%s' % test_case])
+  cwd = language.client_cwd
+  environ = language.cloud_to_prod_env()
+  if docker_image:
+    cmdline = docker_run_cmdline(cmdline, image=docker_image, cwd=cwd, environ=environ)
+    cwd = None
+    environ = None
+
   test_job = jobset.JobSpec(
           cmdline=cmdline,
-          cwd=language.client_cwd,
+          cwd=cwd,
+          environ=environ,
           shortname="cloud_to_prod:%s:%s" % (language, test_case),
-          environ=language.cloud_to_prod_env(),
-          timeout_seconds=60)
+          timeout_seconds=2*60,
+          flake_retries=5 if args.allow_flakes else 0,
+          timeout_retries=2 if args.allow_flakes else 0)
   return test_job
 
 
 def cloud_to_cloud_jobspec(language, test_case, server_name, server_host,
-                           server_port):
+                           server_port, docker_image=None):
   """Creates jobspec for cloud-to-cloud interop test"""
-  cmdline = language.cloud_to_cloud_args() + ['--test_case=%s' % test_case,
-     '--server_host=%s' % server_host,
-     '--server_port=%s' % server_port ]
+  cmdline = bash_login_cmdline(language.cloud_to_cloud_args() +
+                               ['--test_case=%s' % test_case,
+                                '--server_host=%s' % server_host,
+                                '--server_port=%s' % server_port ])
+  cwd = language.client_cwd
+  if docker_image:
+    cmdline = docker_run_cmdline(cmdline,
+                                 image=docker_image,
+                                 cwd=cwd,
+                                 docker_args=['--net=host'])
+    cwd = None
   test_job = jobset.JobSpec(
           cmdline=cmdline,
-          cwd=language.client_cwd,
+          cwd=cwd,
           shortname="cloud_to_cloud:%s:%s_server:%s" % (language, server_name,
                                                  test_case),
-          timeout_seconds=60)
+          timeout_seconds=2*60,
+          flake_retries=5 if args.allow_flakes else 0,
+          timeout_retries=2 if args.allow_flakes else 0)
   return test_job
 
+
+def server_jobspec(language, docker_image):
+  """Create jobspec for running a server"""
+  cidfile = tempfile.mktemp()
+  cmdline = bash_login_cmdline(language.server_args() +
+                               ['--port=%s' % _DEFAULT_SERVER_PORT])
+  docker_cmdline = docker_run_cmdline(cmdline,
+                                      image=docker_image,
+                                      cwd=language.server_cwd,
+                                      docker_args=['-p', str(_DEFAULT_SERVER_PORT),
+                                                   '--cidfile', cidfile])
+  server_job = jobset.JobSpec(
+          cmdline=docker_cmdline,
+          shortname="interop_server:%s" % language,
+          timeout_seconds=30*60)
+  server_job.cidfile = cidfile
+  return server_job
+
+
+def build_interop_image_jobspec(language, tag=None):
+  """Creates jobspec for building interop docker image for a language"""
+  safelang = str(language).replace("+", "x")
+  if not tag:
+    tag = 'grpc_interop_%s:%s' % (safelang, uuid.uuid4())
+  env = {'INTEROP_IMAGE': tag, 'BASE_NAME': 'grpc_interop_%s' % safelang}
+  if not args.travis:
+    env['TTY_FLAG'] = '-t'
+  build_job = jobset.JobSpec(
+          cmdline=['tools/jenkins/build_interop_image.sh'],
+          environ=env,
+          shortname="build_docker_%s" % (language),
+          timeout_seconds=30*60)
+  build_job.tag = tag
+  return build_job
+
+
 argp = argparse.ArgumentParser(description='Run interop tests.')
 argp.add_argument('-l', '--language',
                   choices=['all'] + sorted(_LANGUAGES),
                   nargs='+',
                   default=['all'],
                   help='Clients to run.')
-argp.add_argument('-j', '--jobs', default=24, type=int)
+argp.add_argument('-j', '--jobs', default=multiprocessing.cpu_count(), type=int)
 argp.add_argument('--cloud_to_prod',
                   default=False,
                   action='store_const',
@@ -242,9 +377,14 @@ argp.add_argument('--use_docker',
                   help='Run all the interop tests under docker. That provides ' +
                   'additional isolation and prevents the need to install ' +
                   'language specific prerequisites. Only available on Linux.')
+argp.add_argument('--allow_flakes',
+                  default=False,
+                  action='store_const',
+                  const=True,
+                  help="Allow flaky tests to show as passing (re-runs failed tests up to five times)")
 args = argp.parse_args()
 
-servers = set(s for s in itertools.chain.from_iterable(_SERVERS.iterkeys()
+servers = set(s for s in itertools.chain.from_iterable(_SERVERS
                                                        if x == 'all' else [x]
                                                        for x in args.server))
 
@@ -257,73 +397,99 @@ if args.use_docker:
     print 'copied to the docker environment.'
     time.sleep(5)
 
-  child_argv = [ arg for arg in sys.argv if not arg == '--use_docker' ]
-  run_tests_cmd = ('tools/run_tests/run_interop_tests.py %s' %
-                   " ".join(child_argv[1:]))
-
-  # cmdline args to pass to the container running servers.
-  servers_extra_docker_args = ''
-  server_port_tuples = ''
-  for server in servers:
-    port = _SERVERS[server]
-    servers_extra_docker_args += ' -p %s' % port
-    servers_extra_docker_args += ' -e SERVER_PORT_%s=%s' % (server.replace("+", "x"), port)
-    server_port_tuples += ' %s:%s' % (server, port)
-
-  env = os.environ.copy()
-  env['RUN_TESTS_COMMAND'] = run_tests_cmd
-  env['SERVERS_DOCKER_EXTRA_ARGS'] = servers_extra_docker_args
-  env['SERVER_PORT_TUPLES'] = server_port_tuples
-  if not args.travis:
-    env['TTY_FLAG'] = '-t'  # enables Ctrl-C when not on Jenkins.
-
-  subprocess.check_call(['tools/jenkins/build_docker_and_run_interop_tests.sh'],
-                        shell=True,
-                        env=env)
-  sys.exit(0)
+if not args.use_docker and servers:
+  print "Running interop servers is only supported with --use_docker option enabled."
+  sys.exit(1)
 
 languages = set(_LANGUAGES[l]
                 for l in itertools.chain.from_iterable(
                       _LANGUAGES.iterkeys() if x == 'all' else [x]
                       for x in args.language))
 
-jobs = []
-if args.cloud_to_prod:
-  for language in languages:
-    for test_case in _TEST_CASES:
-      test_job = cloud_to_prod_jobspec(language, test_case)
-      jobs.append(test_job)
-
-# default servers to "localhost" and the default port
-server_addresses = dict((s, ("localhost", _SERVERS[s])) for s in servers)
-
-for server in args.override_server:
-  server_name = server[0]
-  (server_host, server_port) = server[1].split(":")
-  server_addresses[server_name] = (server_host, server_port)
-
-for server_name, server_address in server_addresses.iteritems():
-  (server_host, server_port) = server_address
-  for language in languages:
-    for test_case in _TEST_CASES:
-      test_job = cloud_to_cloud_jobspec(language,
-                                        test_case,
-                                        server_name,
-                                        server_host,
-                                        server_port)
-      jobs.append(test_job)
-
-if not jobs:
-  print "No jobs to run."
-  sys.exit(1)
-
-root = ET.Element('testsuites')
-testsuite = ET.SubElement(root, 'testsuite', id='1', package='grpc', name='tests')
-
-if jobset.run(jobs, newline_on_success=True, maxjobs=args.jobs, xml_report=testsuite):
-  jobset.message('SUCCESS', 'All tests passed', do_newline=True)
-else:
-  jobset.message('FAILED', 'Some tests failed', do_newline=True)
-
-tree = ET.ElementTree(root)
-tree.write('report.xml', encoding='UTF-8')
+docker_images={}
+if args.use_docker:
+  # languages for which to build docker images
+  languages_to_build = set(_LANGUAGES[k] for k in set([str(l) for l in languages] +
+                                                    [s for s in servers]))
+
+  build_jobs = []
+  for l in languages_to_build:
+    job = build_interop_image_jobspec(l)
+    docker_images[str(l)] = job.tag
+    build_jobs.append(job)
+
+  if build_jobs:
+    jobset.message('START', 'Building interop docker images.', do_newline=True)
+    if jobset.run(build_jobs, newline_on_success=True, maxjobs=args.jobs):
+      jobset.message('SUCCESS', 'All docker images built successfully.', do_newline=True)
+    else:
+      jobset.message('FAILED', 'Failed to build interop docker images.', do_newline=True)
+      for image in docker_images.itervalues():
+        dockerjob.remove_image(image, skip_nonexistent=True)
+      exit(1);
+
+# Start interop servers.
+server_jobs={}
+server_addresses={}
+try:
+  for s in servers:
+    lang = str(s)
+    spec = server_jobspec(_LANGUAGES[lang], docker_images.get(lang))
+    job = dockerjob.DockerJob(spec)
+    server_jobs[lang] = job
+    server_addresses[lang] = ('localhost', job.mapped_port(_DEFAULT_SERVER_PORT))
+
+
+  jobs = []
+  if args.cloud_to_prod:
+    for language in languages:
+      for test_case in _TEST_CASES:
+        test_job = cloud_to_prod_jobspec(language, test_case,
+                                         docker_image=docker_images.get(str(language)))
+        jobs.append(test_job)
+
+  for server in args.override_server:
+    server_name = server[0]
+    (server_host, server_port) = server[1].split(':')
+    server_addresses[server_name] = (server_host, server_port)
+
+  for server_name, server_address in server_addresses.iteritems():
+    (server_host, server_port) = server_address
+    for language in languages:
+      for test_case in _TEST_CASES:
+        test_job = cloud_to_cloud_jobspec(language,
+                                          test_case,
+                                          server_name,
+                                          server_host,
+                                          server_port,
+                                          docker_image=docker_images.get(str(language)))
+        jobs.append(test_job)
+
+  if not jobs:
+    print "No jobs to run."
+    for image in docker_images.itervalues():
+      dockerjob.remove_image(image, skip_nonexistent=True)
+    sys.exit(1)
+
+  root = ET.Element('testsuites')
+  testsuite = ET.SubElement(root, 'testsuite', id='1', package='grpc', name='tests')
+
+  if jobset.run(jobs, newline_on_success=True, maxjobs=args.jobs, xml_report=testsuite):
+    jobset.message('SUCCESS', 'All tests passed', do_newline=True)
+  else:
+    jobset.message('FAILED', 'Some tests failed', do_newline=True)
+
+  tree = ET.ElementTree(root)
+  tree.write('report.xml', encoding='UTF-8')
+
+finally:
+  # Check if servers are still running.
+  for server, job in server_jobs.iteritems():
+    if not job.is_running():
+      print 'Server "%s" has exited prematurely.' % server
+
+  dockerjob.finish_jobs([j for j in server_jobs.itervalues()])
+
+  for image in docker_images.itervalues():
+    print 'Removing docker image %s' % image
+    dockerjob.remove_image(image)