MINOR: Added scripts to automate Vagrant setup for system tests

Updated testing README accordingly.

Author: Geoff Anderson <geoff@confluent.io>

Reviewers: Ewen Cheslack-Postava, Gwen Shapira

Closes #201 from granders/minor-vagrant-package-script

tests/README.md

@@ -14,51 +14,29 @@ https://cwiki.apache.org/confluence/display/KAFKA/tutorial+-+set+up+and+run+Kafk
 
 * Install Virtual Box from [https://www.virtualbox.org/](https://www.virtualbox.org/) (run `$ vboxmanage --version` to check if it's installed).
 * Install Vagrant >= 1.6.4 from [http://www.vagrantup.com/](http://www.vagrantup.com/) (run `vagrant --version` to check if it's installed).
-* Install Vagrant Plugins:
+* Install system test dependiences, including ducktape, a command-line tool and library for testing distributed systems.
 
-        # Required
-        # Note that vagrant-hostmanager v1.6.0 and up breaks our Vagrant scripts
-        $ vagrant plugin install vagrant-hostmanager --plugin-version 1.5.0
-        $ vagrant plugin install vagrant-cachier
+        $ python tests/setup.py develop
 
-* Build a specific branch of Kafka
-       
-        $ cd kafka
-        $ git checkout $BRANCH
-        $ gradle
-        $ ./gradlew jar
-      
-* Setup a testing cluster with Vagrant. Configure your Vagrant setup by creating the file 
-   `Vagrantfile.local` in the directory of your Kafka checkout. For testing purposes,
-  `num_brokers` and `num_kafka` should be 0, and `num_workers` should be set high enough
-  to run all of you tests. An example resides in kafka/vagrant/system-test-Vagrantfile.local
-
-        # Example Vagrantfile.local for use on local machine
-        # Vagrantfile.local should reside in the base Kafka directory
-        num_zookeepers = 0
-        num_kafka = 0
-        num_workers = 9
+* Run the bootstrap script to set up Vagrant for testing
+
+        $ tests/bootstrap-test-env.sh
 
-* Bring up the cluster (note that the initial provisioning process can be slow since it involves
-installing dependencies and updates on every vm.):
+* Bring up the test cluster
 
         $ vagrant up
 
-* Install ducktape:
+* Build the desired branch of Kafka
        
-        $ pip install ducktape
-
+        $ git checkout $BRANCH
+        $ gradle  # (only if necessary)
+        $ ./gradlew jar
+     
 * Run the system tests using ducktape:
 
         $ cd tests
         $ ducktape kafkatest/tests
 
-* If you make changes to your Kafka checkout, you'll need to rebuild and resync to your Vagrant cluster:
-
-        $ cd kafka
-        $ ./gradlew jar
-        $ vagrant rsync # Re-syncs build output to cluster
-        
 EC2 Quickstart
 --------------
 This quickstart will help you run the Kafka system tests on EC2. In this setup, all logic is run

tests/bootstrap-test-env.sh

@@ -0,0 +1,94 @@
+#!/usr/bin/env bash
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This script automates the process of setting up a local machine for running Kafka system tests
+
+# Helper function which prints version numbers so they can be compared lexically or numerically
+function version { echo "$@" | awk -F. '{ printf("%03d%03d%03d%03d\n", $1,$2,$3,$4); }'; }
+
+base_dir=`dirname $0`/..
+cd $base_dir
+
+echo "Checking Virtual Box installation..."
+bad_vb=false
+if [ -z `vboxmanage --version` ]; then
+    echo "It appears that Virtual Box is not installed. Please install and try again (see https://www.virtualbox.org/ for details)"
+    bad_vb=true   
+else
+    echo "Virtual Box looks good."
+fi
+
+echo "Checking Vagrant installation..."
+vagrant_version=`vagrant --version | egrep -o "\d+\.\d+\.\d+"`
+bad_vagrant=false
+if [ "$(version $vagrant_version)" -lt "$(version 1.6.4)" ]; then
+    echo "Found Vagrant version $vagrant_version. Please upgrade to 1.6.4 or higher (see http://www.vagrantup.com for details)"
+    bad_vagrant=true
+else
+    echo "Vagrant installation looks good."
+fi
+
+if [ "x$bad_vagrant" == "xtrue" -o "x$bad_vb" == "xtrue" ]; then
+    exit 1
+fi
+
+echo "Checking for necessary Vagrant plugins..."
+install_hostmanager=false
+hostmanager_version=`vagrant plugin list | grep vagrant-hostmanager | egrep -o "\d+\.\d+\.\d+"`
+if [ -z "$hostmanager_version"  ]; then
+    install_hostmanager=true
+elif [ "$hostmanager_version" != "1.5.0" ]; then
+    echo "You have the wrong version of vagrant plugin vagrant-hostmanager. Uninstalling..."
+    vagrant plugin uninstall vagrant-hostmanager
+    install_hostmanager=true
+fi
+if [ "x$install_hostmanager" == "xtrue" ]; then
+    vagrant plugin install vagrant-hostmanager --plugin-version 1.5.0
+fi
+
+echo "Creating and packaging a reusable base box for Vagrant..."
+vagrant/package-base-box.sh
+
+# Set up Vagrantfile.local if necessary
+if [ ! -e Vagrantfile.local ]; then
+    echo "Creating Vagrantfile.local..."
+    cp vagrant/system-test-Vagrantfile.local Vagrantfile.local
+else
+    echo "Found an existing Vagrantfile.local. Keeping without overwriting..."
+fi
+
+# Sanity check contents of Vagrantfile.local
+echo "Checking Vagrantfile.local..."
+vagrantfile_ok=true
+num_brokers=`egrep -o "num_brokers\s*=\s*\d+" Vagrantfile.local | cut -d '=' -f 2 | xargs`
+num_zookeepers=`egrep -o "num_zookeepers\s*=\s*\d+" Vagrantfile.local | cut -d '=' -f 2 | xargs`
+num_workers=`egrep -o "num_workers\s*=\s*\d+" Vagrantfile.local | cut -d '=' -f 2 | xargs`
+if [ "x$num_brokers" == "x" -o "$num_brokers" != 0 ]; then
+    echo "Vagrantfile.local: bad num_brokers. Update to: num_brokers = 0"
+    vagrantfile_ok=false
+fi
+if [ "x$num_zookeepers" == "x" -o "$num_zookeepers" != 0 ]; then
+    echo "Vagrantfile.local: bad num_zookeepers. Update to: num_zookeepers = 0"
+    vagrantfile_ok=false
+fi
+if [ "x$num_workers" == "x" -o "$num_workers" == 0 ]; then
+    echo "Vagrantfile.local: bad num_workers (size of test cluster). Set num_workers high enough to run your tests."
+    vagrantfile_ok=false
+fi
+
+if [ "$vagrantfile_ok" == "true" ]; then
+    echo "Vagrantfile.local looks good."
+fi

vagrant/package-base-box.sh

@@ -0,0 +1,75 @@
+#!/usr/bin/env bash
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This script automates the process of creating and packaging 
+# a new vagrant base_box. For use locally (not aws).
+
+base_dir=`dirname $0`/..
+cd $base_dir
+
+backup_vagrantfile=backup_Vagrantfile.local
+local_vagrantfile=Vagrantfile.local
+
+# Restore original Vagrantfile.local, if it exists
+function revert_vagrantfile {
+    rm -f $local_vagrantfile
+    if [ -e $backup_vagrantfile ]; then
+        mv $backup_vagrantfile $local_vagrantfile
+    fi
+}
+
+function clean_up {
+    echo "Cleaning up..."
+    vagrant destroy -f
+    rm -f package.box
+    revert_vagrantfile
+}
+
+# Name of the new base box
+base_box="kafkatest-worker"
+
+# vagrant VM name
+worker_name="worker1"
+
+echo "Destroying vagrant machines..."
+vagrant destroy -f
+
+echo "Removing $base_box from vagrant..."
+vagrant box remove $base_box
+
+echo "Bringing up a single vagrant machine from scratch..."
+if [ -e $local_vagrantfile ]; then
+    mv $local_vagrantfile $backup_vagrantfile
+fi
+echo "num_workers = 1" > $local_vagrantfile
+echo "num_brokers = 0" >> $local_vagrantfile
+echo "num_zookeepers = 0" >> $local_vagrantfile
+vagrant up
+up_status=$?
+if [ $up_status != 0 ]; then
+    echo "Failed to bring up a template vm, please try running again."
+    clean_up
+    exit $up_status
+fi
+
+echo "Packaging $worker_name..."
+vagrant package $worker_name
+
+echo "Adding new base box $base_box to vagrant..."
+vagrant box add $base_box package.box
+
+clean_up
+

vagrant/system-test-Vagrantfile.local

@@ -20,3 +20,4 @@
 num_zookeepers = 0
 num_brokers = 0
 num_workers = 9
+base_box = "kafkatest-worker"