added faafo example

2020-04-21 15:46:58 +02:00
parent b7143441f2
commit 5b953bb5ed
38 changed files with 1851 additions and 0 deletions
--- a/faafo/.gitignore
+++ b/faafo/.gitignore
@@ -0,0 +1,14 @@
+.tox
+.vagrant
+*.pyc
+.venv
+*.egg-info
+*.egg
+.eggs
+.*.swp
+build
+*.log
+*.png
+AUTHORS
+ChangeLog
+dist
--- a/faafo/CONTRIBUTING.rst
+++ b/faafo/CONTRIBUTING.rst
@@ -0,0 +1,16 @@
+If you would like to contribute to the development of OpenStack,
+you must follow the steps documented at:
+
+   http://docs.openstack.org/infra/manual/developers.html#getting-started
+
+Once those steps have been completed, changes to OpenStack
+should be submitted for review via the Gerrit tool, following
+the workflow documented at:
+
+   http://docs.openstack.org/infra/manual/developers.html#development-workflow
+
+Pull requests submitted through GitHub will be ignored.
+
+Bugs should be filed on Launchpad, not GitHub:
+
+   https://bugs.launchpad.net/faafo
--- a/faafo/LICENSE
+++ b/faafo/LICENSE
@@ -0,0 +1,202 @@
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--- a/faafo/README.rst
+++ b/faafo/README.rst
@@ -0,0 +1,30 @@
+Local copy of the former faafo OpenStack Tutorial from developer.openstack.org
+
+========================
+Team and repository tags
+========================
+
+.. image:: http://governance.openstack.org/badges/faafo.svg
+    :target: http://governance.openstack.org/reference/tags/index.html
+
+.. Change things from this point on
+
+===========================================
+First App Application for OpenStack (faafo)
+===========================================
+
+Developer documentation, the source of which is in ``doc/source/``, is
+published at:
+
+    http://docs.openstack.org/developer/faafo/
+
+Bugs and feature requests are tracked on Launchpad at:
+
+    https://bugs.launchpad.net/faafo
+
+Contributors are encouraged to join IRC (``#openstackfirstapp`` on freenode):
+
+    https://wiki.openstack.org/wiki/IRC
+
+For information on contributing to the First App Application for OpenStack,
+see ``CONTRIBUTING.rst``.
--- a/faafo/Vagrantfile
+++ b/faafo/Vagrantfile
@@ -0,0 +1,49 @@
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+# Licensed 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.
+
+Vagrant.configure(2) do |config|
+  config.vm.box = 'ubuntu/trusty64'
+  config.vm.provider 'virtualbox' do |vb|
+    vb.memory = 1024
+    vb.cpus = 1
+  end
+  config.ssh.shell = 'bash -c "BASH_ENV=/etc/profile exec bash"'
+  config.cache.scope = :box if Vagrant.has_plugin?('vagrant-cachier')
+  config.vm.provision "shell",
+    inline: "apt-get update && apt-get upgrade -y"
+
+  config.vm.define "services", primary: true do |node|
+    node.vm.hostname= "services"
+    node.vm.network :private_network, ip: '10.0.88.10'
+    node.vm.provision "shell",
+      inline: "/vagrant/contrib/install.sh -i messaging -i database"
+    node.vm.network 'forwarded_port', guest: 15_672, host: 15_672
+  end
+
+  config.vm.define "api" do |node|
+    node.vm.hostname= "api"
+    node.vm.network :private_network, ip: '10.0.88.20'
+    node.vm.provision "shell",
+      inline: "/vagrant/contrib/install.sh -i faafo -r api -d 'mysql://faafo:password@10.0.88.10:3306/faafo' -m 'amqp://guest:guest@10.0.88.10:5672/'"
+    node.vm.network 'forwarded_port', guest: 80, host: 1080
+  end
+
+  config.vm.define "worker" do |node|
+    node.vm.hostname= "worker"
+    node.vm.network :private_network, ip: '10.0.88.30'
+    node.vm.provision "shell",
+      inline: "/vagrant/contrib/install.sh -i faafo -r worker -m 'amqp://guest:guest@10.0.88.10:5672/' -e 'http://10.0.88.20'"
+  end
+end
--- a/faafo/bin/faafo
+++ b/faafo/bin/faafo
@@ -0,0 +1,267 @@
+#!/usr/bin/env python
+
+# Licensed 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.
+
+import copy
+import json
+import random
+import uuid
+
+from oslo_config import cfg
+from oslo_log import log
+from prettytable import PrettyTable
+import requests
+
+from faafo import version
+
+
+LOG = log.getLogger('faafo.client')
+CONF = cfg.CONF
+
+
+def get_random_task():
+    random.seed()
+
+    if CONF.command.width:
+        width = int(CONF.command.width)
+    else:
+        width = random.randint(int(CONF.command.min_width),
+                               int(CONF.command.max_width))
+
+    if CONF.command.height:
+        height = int(CONF.command.height)
+    else:
+        height = random.randint(int(CONF.command.min_height),
+                                int(CONF.command.max_height))
+
+    if CONF.command.iterations:
+        iterations = int(CONF.command.iterations)
+    else:
+        iterations = random.randint(int(CONF.command.min_iterations),
+                                    int(CONF.command.max_iterations))
+
+    if CONF.command.xa:
+        xa = float(CONF.command.xa)
+    else:
+        xa = random.uniform(float(CONF.command.min_xa),
+                            float(CONF.command.max_xa))
+
+    if CONF.command.xb:
+        xb = float(CONF.command.xb)
+    else:
+        xb = random.uniform(float(CONF.command.min_xb),
+                            float(CONF.command.max_xb))
+
+    if CONF.command.ya:
+        ya = float(CONF.command.ya)
+    else:
+        ya = random.uniform(float(CONF.command.min_ya),
+                            float(CONF.command.max_ya))
+
+    if CONF.command.yb:
+        yb = float(CONF.command.yb)
+    else:
+        yb = random.uniform(float(CONF.command.min_yb),
+                            float(CONF.command.max_yb))
+
+    task = {
+        'uuid': str(uuid.uuid4()),
+        'width': width,
+        'height': height,
+        'iterations': iterations, 'xa': xa,
+        'xb': xb,
+        'ya': ya,
+        'yb': yb
+    }
+
+    return task
+
+
+def do_get_fractal():
+    LOG.error("command 'download' not yet implemented")
+
+
+def do_show_fractal():
+    LOG.info("showing fractal %s" % CONF.command.uuid)
+    result = requests.get("%s/v1/fractal/%s" %
+                          (CONF.endpoint_url, CONF.command.uuid))
+    if result.status_code == 200:
+        data = json.loads(result.text)
+        output = PrettyTable(["Parameter", "Value"])
+        output.align["Parameter"] = "l"
+        output.align["Value"] = "l"
+        output.add_row(["uuid", data['uuid']])
+        output.add_row(["duration", "%f seconds" % data['duration']])
+        output.add_row(["dimensions", "%d x %d pixels" %
+                                      (data['width'], data['height'])])
+        output.add_row(["iterations", data['iterations']])
+        output.add_row(["xa", data['xa']])
+        output.add_row(["xb", data['xb']])
+        output.add_row(["ya", data['ya']])
+        output.add_row(["yb", data['yb']])
+        output.add_row(["size", "%d bytes" % data['size']])
+        output.add_row(["checksum", data['checksum']])
+        output.add_row(["generated_by", data['generated_by']])
+        print(output)
+    else:
+        LOG.error("fractal '%s' not found" % CONF.command.uuid)
+
+
+def do_list_fractals():
+    LOG.info("listing all fractals")
+
+    fractals = get_fractals()
+    output = PrettyTable(["UUID", "Dimensions", "Filesize"])
+    for fractal in fractals:
+        output.add_row([
+            fractal["uuid"],
+            "%d x %d pixels" % (fractal["width"], fractal["height"]),
+            "%d bytes" % (fractal["size"] or 0),
+        ])
+    print(output)
+
+
+def get_fractals(page=1):
+    result = requests.get("%s/v1/fractal?page=%d" %
+                          (CONF.endpoint_url, page))
+
+    fractals = []
+    if result.status_code == 200:
+        data = json.loads(result.text)
+        if page < data['total_pages']:
+            fractals = data['objects'] + get_fractals(page + 1)
+        else:
+            return data['objects']
+
+    return fractals
+
+
+def do_delete_fractal():
+    LOG.info("deleting fractal %s" % CONF.command.uuid)
+    result = requests.delete("%s/v1/fractal/%s" %
+                             (CONF.endpoint_url, CONF.command.uuid))
+    LOG.debug("result: %s" %result)
+
+
+def do_create_fractal():
+    random.seed()
+    if CONF.command.tasks:
+        number = int(CONF.command.tasks)
+    else:
+        number = random.randint(int(CONF.command.min_tasks),
+                                int(CONF.command.max_tasks))
+    LOG.info("generating %d task(s)" % number)
+    for i in xrange(0, number):
+        task = get_random_task()
+        LOG.debug("created task %s" % task)
+        # NOTE(berendt): only necessary when using requests < 2.4.2
+        headers = {'Content-type': 'application/json',
+                   'Accept': 'text/plain'}
+        requests.post("%s/v1/fractal" % CONF.endpoint_url,
+                      json.dumps(task), headers=headers)
+
+
+def add_command_parsers(subparsers):
+    parser = subparsers.add_parser('create')
+    parser.set_defaults(func=do_create_fractal)
+    parser.add_argument("--height", default=None,
+                        help="The height of the generate image.")
+    parser.add_argument("--min-height", default=256,
+                        help="The minimum height of the generate image.")
+    parser.add_argument("--max-height", default=1024,
+                        help="The maximum height of the generate image.")
+    parser.add_argument("--width", default=None,
+                        help="The width of the generated image.")
+    parser.add_argument("--min-width", default=256,
+                        help="The minimum width of the generated image.")
+    parser.add_argument("--max-width", default=1024,
+                        help="The maximum width of the generated image.")
+    parser.add_argument("--iterations", default=None,
+                        help="The number of iterations.")
+    parser.add_argument("--min-iterations", default=128,
+                        help="The minimum number of iterations.")
+    parser.add_argument("--max-iterations", default=512,
+                        help="The maximum number of iterations.")
+    parser.add_argument("--tasks", default=None,
+                        help="The number of generated fractals.")
+    parser.add_argument("--min-tasks", default=1,
+                        help="The minimum number of generated fractals.")
+    parser.add_argument("--max-tasks", default=10,
+                        help="The maximum number of generated fractals.")
+    parser.add_argument("--xa", default=None,
+                        help="The value for the parameter 'xa'.")
+    parser.add_argument("--min-xa", default=-1.0,
+                        help="The minimum value for the parameter 'xa'.")
+    parser.add_argument("--max-xa", default=-4.0,
+                        help="The maximum value for the parameter 'xa'.")
+    parser.add_argument("--xb", default=None,
+                        help="The value for the parameter 'xb'.")
+    parser.add_argument("--min-xb", default=1.0,
+                        help="The minimum value for the parameter 'xb'.")
+    parser.add_argument("--max-xb", default=4.0,
+                        help="The maximum value for the parameter 'xb'.")
+    parser.add_argument("--ya", default=None,
+                        help="The value for the parameter 'ya'.")
+    parser.add_argument("--min-ya", default=-0.5,
+                        help="The minimum value for the parameter 'ya'.")
+    parser.add_argument("--max-ya", default=-3,
+                        help="The maximum value for the parameter 'ya'.")
+    parser.add_argument("--yb", default=None,
+                        help="The value for the parameter 'yb'.")
+    parser.add_argument("--min-yb", default=0.5,
+                        help="The minimum value for the parameter 'yb'.")
+    parser.add_argument("--max-yb", default=3,
+                        help="The maximum value for the parameter 'yb'.")
+
+    parser = subparsers.add_parser('delete')
+    parser.set_defaults(func=do_delete_fractal)
+    parser.add_argument("uuid", help="Fractal to delete.")
+
+    parser = subparsers.add_parser('show')
+    parser.set_defaults(func=do_show_fractal)
+    parser.add_argument("uuid", help="Fractal to show.")
+
+    parser = subparsers.add_parser('get')
+    parser.set_defaults(func=do_get_fractal)
+    parser.add_argument("uuid", help="Fractal to download.")
+
+    parser = subparsers.add_parser('list')
+    parser.set_defaults(func=do_list_fractals)
+
+
+client_commands = cfg.SubCommandOpt('command', title='Commands',
+                                    help='Show available commands.',
+                                    handler=add_command_parsers)
+
+CONF.register_cli_opts([client_commands])
+
+client_cli_opts = [
+    cfg.StrOpt('endpoint-url',
+               default='http://localhost',
+               help='API connection URL')
+]
+
+CONF.register_cli_opts(client_cli_opts)
+
+
+if __name__ == '__main__':
+    log.register_options(CONF)
+    log.set_defaults()
+
+    CONF(project='client', prog='faafo-client',
+         version=version.version_info.version_string())
+
+    log.setup(CONF, 'client',
+              version=version.version_info.version_string())
+
+    CONF.command.func()
--- a/faafo/bin/faafo-worker
+++ b/faafo/bin/faafo-worker
@@ -0,0 +1,52 @@
+#!/usr/bin/env python
+
+# Licensed 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.
+
+import os
+import sys
+
+import kombu
+from oslo_config import cfg
+from oslo_log import log
+
+from faafo.worker import service as worker
+from faafo import version
+
+LOG = log.getLogger('faafo.worker')
+CONF = cfg.CONF
+
+# If ../faafo/__init__.py exists, add ../ to Python search path, so that
+# it will override what happens to be installed in /usr/(local/)lib/python...
+possible_topdir = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
+                                   os.pardir,
+                                   os.pardir))
+if os.path.exists(os.path.join(possible_topdir, 'faafo', '__init__.py')):
+    sys.path.insert(0, possible_topdir)
+
+if __name__ == '__main__':
+    log.register_options(CONF)
+    log.set_defaults()
+
+    CONF(project='worker', prog='faafo-worker',
+         default_config_files=['/etc/faafo/faafo.conf'],
+         version=version.version_info.version_string())
+
+    log.setup(CONF, 'worker',
+              version=version.version_info.version_string())
+
+    connection = kombu.Connection(CONF.transport_url)
+    server = worker.Worker(connection)
+    try:
+        server.run()
+    except KeyboardInterrupt:
+        LOG.info("Caught keyboard interrupt. Exiting.")
--- a/faafo/contrib/install.sh
+++ b/faafo/contrib/install.sh
@@ -0,0 +1,198 @@
+#!/bin/bash
+
+# Licensed 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.
+
+if [[ -e /etc/os-release ]]; then
+
+    # NOTE(berendt): support for CentOS/RHEL/openSUSE/SLES will be added in the future
+
+    source /etc/os-release
+
+    INSTALL_DATABASE=0
+    INSTALL_FAAFO=0
+    INSTALL_MESSAGING=0
+    RUN_API=0
+    RUN_DEMO=0
+    RUN_WORKER=0
+    URL_DATABASE='sqlite:////tmp/sqlite.db'
+    URL_ENDPOINT='http://127.0.0.1'
+    URL_MESSAGING='amqp://guest:guest@localhost:5672/'
+
+    while getopts e:m:d:i:r: FLAG; do
+        case $FLAG in
+            i)
+                case $OPTARG in
+                    messaging)
+                        INSTALL_MESSAGING=1
+                    ;;
+                    database)
+                        INSTALL_DATABASE=1
+                    ;;
+                    faafo)
+                        INSTALL_FAAFO=1
+                    ;;
+                esac
+            ;;
+            r)
+                case $OPTARG in
+                    demo)
+                        RUN_DEMO=1
+                    ;;
+                    api)
+                        RUN_API=1
+                    ;;
+                    worker)
+                        RUN_WORKER=1
+                    ;;
+                esac
+            ;;
+            e)
+                URL_ENDPOINT=$OPTARG
+            ;;
+
+            m)
+                URL_MESSAGING=$OPTARG
+            ;;
+
+            d)
+                URL_DATABASE=$OPTARG
+            ;;
+
+            *)
+                echo "error: unknown option $FLAG"
+                exit 1
+            ;;
+        esac
+    done
+
+    if [[ $ID = 'ubuntu' || $ID = 'debian' ]]; then
+        sudo apt-get update
+    elif [[ $ID = 'fedora' ]]; then
+        sudo dnf update -y
+    fi
+
+    if [[ $INSTALL_DATABASE -eq 1 ]]; then
+        if [[ $ID = 'ubuntu' || $ID = 'debian' ]]; then
+            sudo DEBIAN_FRONTEND=noninteractive apt-get install -y mysql-server python-mysqldb
+            sudo sed -i -e "/bind-address/d" /etc/mysql/my.cnf
+            sudo service mysql restart
+        elif [[ $ID = 'fedora' ]]; then
+            sudo dnf install -y mariadb-server python-mysql
+            printf "[mysqld]\nbind-address = 127.0.0.1\n" | sudo tee /etc/my.cnf.d/faafo.conf
+            sudo systemctl enable mariadb
+            sudo systemctl start mariadb
+        else
+            echo "error: distribution $ID not supported"
+            exit 1
+        fi
+        sudo mysqladmin password password
+        sudo mysql -uroot -ppassword mysql -e "CREATE DATABASE IF NOT EXISTS faafo; GRANT ALL PRIVILEGES ON faafo.* TO 'faafo'@'%' IDENTIFIED BY 'password';"
+        URL_DATABASE='mysql://root:password@localhost/faafo'
+    fi
+
+    if [[ $INSTALL_MESSAGING -eq 1 ]]; then
+        if [[ $ID = 'ubuntu' || $ID = 'debian' ]]; then
+            sudo apt-get install -y rabbitmq-server
+        elif [[ $ID = 'fedora' ]]; then
+            sudo dnf install -y rabbitmq-server
+            sudo systemctl enable rabbitmq-server
+            sudo systemctl start rabbitmq-server
+        else
+            echo "error: distribution $ID not supported"
+            exit 1
+        fi
+    fi
+
+    if [[ $INSTALL_FAAFO -eq 1 ]]; then
+        if [[ $ID = 'ubuntu' || $ID = 'debian' ]]; then
+            sudo apt-get install -y python-dev python-pip supervisor git zlib1g-dev libmysqlclient-dev python-mysqldb
+            # Following is needed because of
+            # https://bugs.launchpad.net/ubuntu/+source/supervisor/+bug/1594740
+            if [ $(lsb_release --short --codename) = xenial ]; then
+                # Make sure the daemon is enabled.
+                if ! systemctl --quiet is-enabled supervisor; then
+                    systemctl enable supervisor
+                fi
+                # Make sure the daemon is started.
+                if ! systemctl --quiet is-active supervisor; then
+                    systemctl start supervisor
+                fi
+            fi
+        elif [[ $ID = 'fedora' ]]; then
+            sudo dnf install -y python-devel python-pip supervisor git zlib-devel mariadb-devel gcc which python-mysql
+            sudo systemctl enable supervisord
+            sudo systemctl start supervisord
+        #elif [[ $ID = 'opensuse' || $ID = 'sles' ]]; then
+        #    sudo zypper install -y python-devel python-pip
+        else
+            echo "error: distribution $ID not supported"
+            exit 1
+        fi
+
+        git clone https://git.openstack.org/openstack/faafo
+        cd faafo
+        # following line required by bug 1636150
+        sudo pip install --upgrade pbr
+        sudo pip install -r requirements.txt
+        sudo python setup.py install
+
+        sudo sed -i -e "s#transport_url = .*#transport_url = $URL_MESSAGING#" /etc/faafo/faafo.conf
+        sudo sed -i -e "s#database_url = .*#database_url = $URL_DATABASE#" /etc/faafo/faafo.conf
+        sudo sed -i -e "s#endpoint_url = .*#endpoint_url = $URL_ENDPOINT#" /etc/faafo/faafo.conf
+    fi
+
+
+    if [[ $RUN_API -eq 1 ]]; then
+        faafo_api="
+[program:faafo_api]
+command=$(which faafo-api)
+priority=10"
+
+        if [[ $ID = 'ubuntu' || $ID = 'debian' ]]; then
+            echo "$faafo_api" | sudo tee -a /etc/supervisor/conf.d/faafo.conf
+        elif [[ $ID = 'fedora' ]]; then
+            echo "$faafo_api" | sudo tee -a /etc/supervisord.d/faafo.ini
+        else
+            echo "error: distribution $ID not supported"
+            exit 1
+        fi
+    fi
+
+    if [[ $RUN_WORKER -eq 1 ]]; then
+        faafo_worker="
+[program:faafo_worker]
+command=$(which faafo-worker)
+priority=20"
+
+        if [[ $ID = 'ubuntu' || $ID = 'debian' ]]; then
+            echo "$faafo_worker" | sudo tee -a /etc/supervisor/conf.d/faafo.conf
+        elif [[ $ID = 'fedora' ]]; then
+            echo "$faafo_worker" | sudo tee -a /etc/supervisord.d/faafo.ini
+        else
+            echo "error: distribution $ID not supported"
+            exit 1
+        fi
+    fi
+
+    if [[ $RUN_WORKER -eq 1 || $RUN_API -eq 1 ]]; then
+        sudo supervisorctl reload
+        sleep 5
+    fi
+
+    if [[ $RUN_DEMO -eq 1 && $RUN_API -eq 1 ]]; then
+        faafo --endpoint-url $URL_ENDPOINT --debug create
+    fi
+
+else
+    exit 1
+fi
--- a/faafo/contrib/test_api.py
+++ b/faafo/contrib/test_api.py
@@ -0,0 +1,56 @@
+#!/usr/bin/env python
+
+# Licensed 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.
+
+import json
+import requests
+
+url = 'http://127.0.0.1/api/fractal'
+headers = {'Content-Type': 'application/json'}
+
+uuid = '13bf15a8-9f6c-4d59-956f-7d20f7484687'
+data = {
+    'uuid': uuid,
+    'width': 100,
+    'height': 100,
+    'iterations': 10,
+    'xa': 1.0,
+    'xb': -1.0,
+    'ya': 1.0,
+    'yb': -1.0,
+}
+response = requests.post(url, data=json.dumps(data), headers=headers)
+assert response.status_code == 201
+
+response = requests.get(url, headers=headers)
+assert response.status_code == 200
+print(response.json())
+
+response = requests.get(url + '/' + uuid, headers=headers)
+assert response.status_code == 200
+print(response.json())
+
+data = {
+    'checksum': 'c6fef4ef13a577066c2281b53c82ce2c7e94e',
+    'duration': 10.12
+}
+response = requests.put(url + '/' + uuid, data=json.dumps(data),
+                        headers=headers)
+assert response.status_code == 200
+
+response = requests.get(url + '/' + uuid, headers=headers)
+assert response.status_code == 200
+print(response.json())
+
+response = requests.delete(url + '/' + uuid, headers=headers)
+assert response.status_code == 204
--- a/faafo/doc/source/conf.py
+++ b/faafo/doc/source/conf.py
@@ -0,0 +1,17 @@
+# Licensed 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.
+
+copyright = u'2015, OpenStack contributors'
+master_doc = 'index'
+project = u'First App Application for OpenStack'
+source_suffix = '.rst'
--- a/faafo/doc/source/development.rst
+++ b/faafo/doc/source/development.rst
@@ -0,0 +1,68 @@
+Development
+===========
+
+Vagrant environment
+-------------------
+
+The `Vagrant <https://www.vagrantup.com/>`_ environment and the `Ansible <http://www.ansible.com/home>`_
+playbook is used only for local tests and development of the application.
+
+The installation of Vagrant is described at https://docs.vagrantup.com/v2/installation/index.html.
+
+To speedup the provisioning you can install the Vagrant plugin `vagrant-cachier <https://github.com/fgrehm/vagrant-cachier>`_.
+
+.. code::
+
+    $ vagrant plugin install vagrant-cachier
+
+Bootstrap the Vagrant environment.
+
+.. code::
+
+    $ vagrant up
+
+Now it is possible to login with SSH.
+
+.. code::
+
+    $ vagrant ssh
+
+Open a new screen or tmux session. Aftwards run the api, worker, and producer
+services in the foreground, each service in a separate window.
+
+* :code:`faafo-api`
+* :code:`faafo-worker`
+* :code:`faafo-producer`
+
+RabbitMQ server
+~~~~~~~~~~~~~~~
+
+The webinterface of the RabbitMQ server is reachable on TCP port :code:`15672`. The login is
+possible with the user :code:`guest` and the password :code:`guest`.
+
+MySQL server
+~~~~~~~~~~~~
+
+The password of the user :code:`root` is :code:`secretsecret`. The password of the user :code:`faafo`
+for the database :code:`faafo` is also :code:`secretsecret`.
+
+Virtual environment
+-------------------
+
+Create a new virtual environment, install all required dependencies and
+the application itself.
+
+.. code::
+
+    $ virtualenv .venv
+    $ source .venv/bin/activate
+    $ pip install -r requirements.txt
+    $ python setup.py install
+
+Open a new screen or tmux session. Aftwards run the api and worker
+services in the foreground, each service in a separate window.
+
+.. code::
+
+    $ source .venv/bin/activate; faafo-api
+    $ source .venv/bin/activate; faafo-worker
--- a/faafo/doc/source/images/diagram.dot
+++ b/faafo/doc/source/images/diagram.dot
@@ -0,0 +1,15 @@
+digraph {
+  API -> Database [color=green];
+  API -> Database [color=orange];
+  Database -> API [color=red];
+  API -> Webinterface [color=red];
+  Producer -> API [color=orange];
+  Producer -> API [color=green];
+  Producer -> "Queue Service" [color=orange];
+  "Queue Service" -> Worker [color=orange];
+  Worker -> "Image File" [color=blue];
+  Worker -> "Queue Service" [color=green];
+  "Queue Service" -> Producer [color=green];
+  "Image File" -> "Storage Backend" [color=blue];
+  "Storage Backend" -> Webinterface [color=red];
+}
--- a/faafo/doc/source/images/diagram.png
+++ b/faafo/doc/source/images/diagram.png
--- a/faafo/doc/source/images/dot2png.sh
+++ b/faafo/doc/source/images/dot2png.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+dot -T png -o diagram.png diagram.dot
--- a/faafo/doc/source/images/example.png
+++ b/faafo/doc/source/images/example.png
--- a/faafo/doc/source/images/screenshot_webinterface.png
+++ b/faafo/doc/source/images/screenshot_webinterface.png
--- a/faafo/doc/source/implementation.rst
+++ b/faafo/doc/source/implementation.rst
@@ -0,0 +1,11 @@
+Implementation
+==============
+
+Frameworks
+----------
+
+* http://flask.pocoo.org/
+* http://python-requests.org
+* http://www.sqlalchemy.org/
+* https://github.com/celery/kombu
+* https://pillow.readthedocs.org/
--- a/faafo/doc/source/index.rst
+++ b/faafo/doc/source/index.rst
@@ -0,0 +1,14 @@
+First App Application for OpenStack
+===================================
+
+Contents:
+
+.. toctree::
+  :maxdepth: 2
+
+  workflow
+  implementation
+  installation
+  usage
+  development
+  references
--- a/faafo/doc/source/installation.rst
+++ b/faafo/doc/source/installation.rst
@@ -0,0 +1,8 @@
+Installation
+============
+
+To install the ``First App Application for OpenStack`` run the following command.
+
+.. code::
+
+  pip install faafo
--- a/faafo/doc/source/references.rst
+++ b/faafo/doc/source/references.rst
@@ -0,0 +1,6 @@
+References
+==========
+
+* http://en.wikipedia.org/wiki/Julia_set
+* http://en.wikipedia.org/wiki/Mandelbrot_set
+* http://code.activestate.com/recipes/577120-julia-fractals/
--- a/faafo/doc/source/usage.rst
+++ b/faafo/doc/source/usage.rst
@@ -0,0 +1,42 @@
+Usage
+=====
+
+Example image
+-------------
+
+.. image:: images/example.png
+
+
+Example outputs
+---------------
+
+Producer service
+~~~~~~~~~~~~~~~~
+
+.. code::
+
+  2015-03-25 23:01:29.308 22526 INFO faafo.producer [-] generating 1 task(s)
+  2015-03-25 23:01:29.344 22526 INFO faafo.producer [-] generated task: {'width': 510, 'yb': 2.478654026560605, 'uuid': '212e8c23-e67f-4bd3-86e1-5a5e811ee2f4', 'iterations': 281, 'xb': 1.1428457603077387, 'xa': -3.3528957195683087, 'ya': -2.1341119130263717, 'height': 278}
+  2015-03-25 23:01:30.295 22526 INFO faafo.producer [-] task 212e8c23-e67f-4bd3-86e1-5a5e811ee2f4 processed: {u'duration': 0.8725259304046631, u'checksum': u'b22d975c4f9dc77df5db96ce6264a4990d865dd8f800aba2ac03a065c2f09b1e', u'uuid': u'212e8c23-e67f-4bd3-86e1-5a5e811ee2f4'}
+
+Worker service
+~~~~~~~~~~~~~~
+
+.. code::
+
+  2015-03-25 23:01:29.378 22518 INFO faafo.worker [-] processing task 212e8c23-e67f-4bd3-86e1-5a5e811ee2f4
+  2015-03-25 23:01:30.251 22518 INFO faafo.worker [-] task 212e8c23-e67f-4bd3-86e1-5a5e811ee2f4 processed in 0.872526 seconds
+  2015-03-25 23:01:30.268 22518 INFO faafo.worker [-] saved result of task 212e8c23-e67f-4bd3-86e1-5a5e811ee2f4 to file /home/vagrant/212e8c23-e67f-4bd3-86e1-5a5e811ee2f4.png
+
+
+API Service
+~~~~~~~~~~~
+.. code::
+
+  2015-03-25 23:01:29.342 22511 INFO werkzeug [-] 127.0.0.1 - - [25/Mar/2015 23:01:29] "POST /api/fractal HTTP/1.1" 201 -
+  2015-03-25 23:01:30.317 22511 INFO werkzeug [-] 127.0.0.1 - - [25/Mar/2015 23:01:30] "PUT /api/fractal/212e8c23-e67f-4bd3-86e1-5a5e811ee2f4 HTTP/1.1" 200 -
+
+Example webinterface view
+-------------------------
+
+.. image:: images/screenshot_webinterface.png
--- a/faafo/doc/source/workflow.rst
+++ b/faafo/doc/source/workflow.rst
@@ -0,0 +1,4 @@
+Workflow
+--------
+
+.. image:: images/diagram.png
--- a/faafo/etc/faafo.conf
+++ b/faafo/etc/faafo.conf
@@ -0,0 +1,110 @@
+[DEFAULT]
+
+#
+# From faafo.api
+#
+
+# Listen address. (string value)
+#listen_address = 0.0.0.0
+
+# Bind port. (integer value)
+#bind_port = 80
+
+# Database connection URL. (string value)
+database_url = sqlite:////tmp/sqlite.db
+
+#
+# From faafo.queues
+#
+
+# AMQP connection URL. (string value)
+transport_url = amqp://guest:guest@localhost:5672//
+
+#
+# From faafo.worker
+#
+
+# API connection URL (string value)
+endpoint_url = http://localhost
+
+#
+# From oslo.log
+#
+
+# Print debugging output (set logging level to DEBUG instead of
+# default WARNING level). (boolean value)
+#debug = false
+
+# The name of a logging configuration file. This file is appended to
+# any existing logging configuration files. For details about logging
+# configuration files, see the Python logging module documentation.
+# (string value)
+# Deprecated group/name - [DEFAULT]/log_config
+#log_config_append = <None>
+
+# DEPRECATED. A logging.Formatter log message format string which may
+# use any of the available logging.LogRecord attributes. This option
+# is deprecated.  Please use logging_context_format_string and
+# logging_default_format_string instead. (string value)
+#log_format = <None>
+
+# Format string for %%(asctime)s in log records. Default: %(default)s
+# . (string value)
+#log_date_format = %Y-%m-%d %H:%M:%S
+
+# (Optional) Name of log file to output to. If no default is set,
+# logging will go to stdout. (string value)
+# Deprecated group/name - [DEFAULT]/logfile
+#log_file = <None>
+
+# (Optional) The base directory used for relative --log-file paths.
+# (string value)
+# Deprecated group/name - [DEFAULT]/logdir
+#log_dir = <None>
+
+# Use syslog for logging. Existing syslog format is DEPRECATED during
+# I, and will change in J to honor RFC5424. (boolean value)
+#use_syslog = false
+
+# (Optional) Enables or disables syslog rfc5424 format for logging. If
+# enabled, prefixes the MSG part of the syslog message with APP-NAME
+# (RFC5424). The format without the APP-NAME is deprecated in I, and
+# will be removed in J. (boolean value)
+#use_syslog_rfc_format = false
+
+# Syslog facility to receive log lines. (string value)
+#syslog_log_facility = LOG_USER
+
+# Log output to standard error. (boolean value)
+#use_stderr = true
+
+# Format string to use for log messages with context. (string value)
+#logging_context_format_string = %(asctime)s.%(msecs)03d %(process)d %(levelname)s %(name)s [%(request_id)s %(user_identity)s] %(instance)s%(message)s
+
+# Format string to use for log messages without context. (string
+# value)
+#logging_default_format_string = %(asctime)s.%(msecs)03d %(process)d %(levelname)s %(name)s [-] %(instance)s%(message)s
+
+# Data to append to log format when level is DEBUG. (string value)
+#logging_debug_format_suffix = %(funcName)s %(pathname)s:%(lineno)d
+
+# Prefix each line of exception output with this format. (string
+# value)
+#logging_exception_prefix = %(asctime)s.%(msecs)03d %(process)d TRACE %(name)s %(instance)s
+
+# List of logger=LEVEL pairs. (list value)
+#default_log_levels = amqp=WARN,amqplib=WARN,boto=WARN,qpid=WARN,sqlalchemy=WARN,suds=INFO,oslo.messaging=INFO,iso8601=WARN,requests.packages.urllib3.connectionpool=WARN,urllib3.connectionpool=WARN,websocket=WARN,requests.packages.urllib3.util.retry=WARN,urllib3.util.retry=WARN,keystonemiddleware=WARN,routes.middleware=WARN,stevedore=WARN
+
+# Enables or disables publication of error events. (boolean value)
+#publish_errors = false
+
+# Enables or disables fatal status of deprecations. (boolean value)
+#fatal_deprecations = false
+
+# The format for an instance that is passed with the log message.
+# (string value)
+#instance_format = "[instance: %(uuid)s] "
+
+# The format for an instance UUID that is passed with the log message.
+# (string value)
+#instance_uuid_format = "[instance: %(uuid)s] "
--- a/faafo/etc/faafo.conf.sample
+++ b/faafo/etc/faafo.conf.sample
@@ -0,0 +1,125 @@
+[DEFAULT]
+
+#
+# From faafo.api
+#
+
+# Listen address. (string value)
+#listen_address = 0.0.0.0
+
+# Bind port. (integer value)
+#bind_port = 80
+
+# Database connection URL. (string value)
+#database_url = sqlite:////tmp/sqlite.db
+
+#
+# From faafo.queues
+#
+
+# AMQP connection URL. (string value)
+#transport_url = amqp://guest:guest@localhost:5672//
+
+#
+# From faafo.worker
+#
+
+# API connection URL (string value)
+#endpoint_url = http://localhost
+
+#
+# From oslo.log
+#
+
+# If set to true, the logging level will be set to DEBUG instead of
+# the default INFO level. (boolean value)
+#debug = false
+
+# If set to false, the logging level will be set to WARNING instead of
+# the default INFO level. (boolean value)
+# This option is deprecated for removal.
+# Its value may be silently ignored in the future.
+#verbose = true
+
+# The name of a logging configuration file. This file is appended to
+# any existing logging configuration files. For details about logging
+# configuration files, see the Python logging module documentation.
+# Note that when logging configuration files are used then all logging
+# configuration is set in the configuration file and other logging
+# configuration options are ignored (for example,
+# logging_context_format_string). (string value)
+# Deprecated group/name - [DEFAULT]/log_config
+#log_config_append = <None>
+
+# Defines the format string for %%(asctime)s in log records. Default:
+# %(default)s . This option is ignored if log_config_append is set.
+# (string value)
+#log_date_format = %Y-%m-%d %H:%M:%S
+
+# (Optional) Name of log file to send logging output to. If no default
+# is set, logging will go to stderr as defined by use_stderr. This
+# option is ignored if log_config_append is set. (string value)
+# Deprecated group/name - [DEFAULT]/logfile
+#log_file = <None>
+
+# (Optional) The base directory used for relative log_file  paths.
+# This option is ignored if log_config_append is set. (string value)
+# Deprecated group/name - [DEFAULT]/logdir
+#log_dir = <None>
+
+# Uses logging handler designed to watch file system. When log file is
+# moved or removed this handler will open a new log file with
+# specified path instantaneously. It makes sense only if log_file
+# option is specified and Linux platform is used. This option is
+# ignored if log_config_append is set. (boolean value)
+#watch_log_file = false
+
+# Use syslog for logging. Existing syslog format is DEPRECATED and
+# will be changed later to honor RFC5424. This option is ignored if
+# log_config_append is set. (boolean value)
+#use_syslog = false
+
+# Syslog facility to receive log lines. This option is ignored if
+# log_config_append is set. (string value)
+#syslog_log_facility = LOG_USER
+
+# Log output to standard error. This option is ignored if
+# log_config_append is set. (boolean value)
+#use_stderr = true
+
+# Format string to use for log messages with context. (string value)
+#logging_context_format_string = %(asctime)s.%(msecs)03d %(process)d %(levelname)s %(name)s [%(request_id)s %(user_identity)s] %(instance)s%(message)s
+
+# Format string to use for log messages when context is undefined.
+# (string value)
+#logging_default_format_string = %(asctime)s.%(msecs)03d %(process)d %(levelname)s %(name)s [-] %(instance)s%(message)s
+
+# Additional data to append to log message when logging level for the
+# message is DEBUG. (string value)
+#logging_debug_format_suffix = %(funcName)s %(pathname)s:%(lineno)d
+
+# Prefix each line of exception output with this format. (string
+# value)
+#logging_exception_prefix = %(asctime)s.%(msecs)03d %(process)d ERROR %(name)s %(instance)s
+
+# Defines the format string for %(user_identity)s that is used in
+# logging_context_format_string. (string value)
+#logging_user_identity_format = %(user)s %(tenant)s %(domain)s %(user_domain)s %(project_domain)s
+
+# List of package logging levels in logger=LEVEL pairs. This option is
+# ignored if log_config_append is set. (list value)
+#default_log_levels = amqp=WARN,amqplib=WARN,boto=WARN,qpid=WARN,sqlalchemy=WARN,suds=INFO,oslo.messaging=INFO,iso8601=WARN,requests.packages.urllib3.connectionpool=WARN,urllib3.connectionpool=WARN,websocket=WARN,requests.packages.urllib3.util.retry=WARN,urllib3.util.retry=WARN,keystonemiddleware=WARN,routes.middleware=WARN,stevedore=WARN,taskflow=WARN,keystoneauth=WARN,oslo.cache=INFO,dogpile.core.dogpile=INFO
+
+# Enables or disables publication of error events. (boolean value)
+#publish_errors = false
+
+# The format for an instance that is passed with the log message.
+# (string value)
+#instance_format = "[instance: %(uuid)s] "
+
+# The format for an instance UUID that is passed with the log message.
+# (string value)
+#instance_uuid_format = "[instance: %(uuid)s] "
+
+# Enables or disables fatal status of deprecations. (boolean value)
+#fatal_deprecations = false
--- a/faafo/etc/oslo-config-generator/faafo.conf
+++ b/faafo/etc/oslo-config-generator/faafo.conf
@@ -0,0 +1,6 @@
+[DEFAULT]
+output_file = etc/faafo.conf.sample
+namespace = faafo.worker
+namespace = faafo.api
+namespace = oslo.log
+namespace = faafo.queues
--- a/faafo/faafo/init.py
+++ b/faafo/faafo/init.py
--- a/faafo/faafo/api/init.py
+++ b/faafo/faafo/api/init.py
--- a/faafo/faafo/api/service.py
+++ b/faafo/faafo/api/service.py
@@ -0,0 +1,146 @@
+# Licensed 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.
+
+import base64
+import copy
+import cStringIO
+from pkg_resources import resource_filename
+
+import flask
+import flask.ext.restless
+import flask.ext.sqlalchemy
+from flask_bootstrap import Bootstrap
+from kombu import Connection
+from kombu.pools import producers
+from oslo_config import cfg
+from oslo_log import log
+from PIL import Image
+from sqlalchemy.dialects import mysql
+
+from faafo import queues
+from faafo import version
+
+LOG = log.getLogger('faafo.api')
+CONF = cfg.CONF
+
+api_opts = [
+    cfg.StrOpt('listen-address',
+               default='0.0.0.0',
+               help='Listen address.'),
+    cfg.IntOpt('bind-port',
+               default='80',
+               help='Bind port.'),
+    cfg.StrOpt('database-url',
+               default='sqlite:////tmp/sqlite.db',
+               help='Database connection URL.')
+]
+
+CONF.register_opts(api_opts)
+
+log.register_options(CONF)
+log.set_defaults()
+
+CONF(project='api', prog='faafo-api',
+     default_config_files=['/etc/faafo/faafo.conf'],
+     version=version.version_info.version_string())
+
+log.setup(CONF, 'api',
+          version=version.version_info.version_string())
+
+template_path = resource_filename(__name__, "templates")
+app = flask.Flask('faafo.api', template_folder=template_path)
+app.config['DEBUG'] = CONF.debug
+app.config['SQLALCHEMY_DATABASE_URI'] = CONF.database_url
+db = flask.ext.sqlalchemy.SQLAlchemy(app)
+Bootstrap(app)
+
+
+def list_opts():
+    """Entry point for oslo-config-generator."""
+    return [(None, copy.deepcopy(api_opts))]
+
+
+class Fractal(db.Model):
+    uuid = db.Column(db.String(36), primary_key=True)
+    checksum = db.Column(db.String(256), unique=True)
+    url = db.Column(db.String(256), nullable=True)
+    duration = db.Column(db.Float)
+    size = db.Column(db.Integer, nullable=True)
+    width = db.Column(db.Integer, nullable=False)
+    height = db.Column(db.Integer, nullable=False)
+    iterations = db.Column(db.Integer, nullable=False)
+    xa = db.Column(db.Float, nullable=False)
+    xb = db.Column(db.Float, nullable=False)
+    ya = db.Column(db.Float, nullable=False)
+    yb = db.Column(db.Float, nullable=False)
+
+    if CONF.database_url.startswith('mysql'):
+        LOG.debug('Using MySQL database backend')
+        image = db.Column(mysql.MEDIUMBLOB, nullable=True)
+    else:
+        image = db.Column(db.LargeBinary, nullable=True)
+
+    generated_by = db.Column(db.String(256), nullable=True)
+
+    def __repr__(self):
+        return '<Fractal %s>' % self.uuid
+
+
+db.create_all()
+manager = flask.ext.restless.APIManager(app, flask_sqlalchemy_db=db)
+connection = Connection(CONF.transport_url)
+
+
+@app.route('/', methods=['GET'])
+@app.route('/index', methods=['GET'])
+@app.route('/index/<int:page>', methods=['GET'])
+def index(page=1):
+    fractals = Fractal.query.filter(
+        (Fractal.checksum != None) & (Fractal.size != None)).paginate(  # noqa
+            page, 5, error_out=False)
+    return flask.render_template('index.html', fractals=fractals)
+
+
+@app.route('/fractal/<string:fractalid>', methods=['GET'])
+def get_fractal(fractalid):
+    fractal = Fractal.query.filter_by(uuid=fractalid).first()
+    if not fractal:
+        response = flask.jsonify({'code': 404,
+                                  'message': 'Fracal not found'})
+        response.status_code = 404
+    else:
+        image_data = base64.b64decode(fractal.image)
+        image = Image.open(cStringIO.StringIO(image_data))
+        output = cStringIO.StringIO()
+        image.save(output, "PNG")
+        image.seek(0)
+        response = flask.make_response(output.getvalue())
+        response.content_type = "image/png"
+
+    return response
+
+
+def generate_fractal(**kwargs):
+    with producers[connection].acquire(block=True) as producer:
+        producer.publish(kwargs['result'],
+                         serializer='json',
+                         exchange=queues.task_exchange,
+                         declare=[queues.task_exchange],
+                         routing_key='normal')
+
+
+def main():
+    manager.create_api(Fractal, methods=['GET', 'POST', 'DELETE', 'PUT'],
+                       postprocessors={'POST': [generate_fractal]},
+                       exclude_columns=['image'],
+                       url_prefix='/v1')
+    app.run(host=CONF.listen_address, port=CONF.bind_port)
--- a/faafo/faafo/api/templates/index.html
+++ b/faafo/faafo/api/templates/index.html
@@ -0,0 +1,60 @@
+{% extends "bootstrap/base.html" %}
+{% block title %}First App Application for OpenStack{% endblock %}
+{% from "bootstrap/pagination.html" import render_pagination %}
+
+{% block content %}
+{{render_pagination(fractals)}}
+{% for fractal in fractals.items %}
+<div class="row">
+  <div class="col-xs-5 col-md-3">
+    <a href="/fractal/{{ fractal.uuid }}" class="thumbnail">
+      <img src="/fractal/{{ fractal.uuid }}" style="max-height: 300px; max-width: 300px">
+    </a>
+  </div>
+  <div class="col-xs-7 col-md-9">
+    <table class="table table-striped">
+      <tbody>
+        <tr>
+          <td>UUID</td>
+          <td>{{ fractal.uuid }}</td>
+        </tr>
+        <tr>
+          <td>Duration</td>
+          <td>{{ fractal.duration }} seconds</td>
+        </tr>
+        <tr>
+          <td>Dimensions</td>
+          <td>{{ fractal.width }} x {{ fractal.height }} px</td>
+        </tr>
+        <tr>
+          <td>Iterations</td>
+          <td>{{ fractal.iterations }}</td>
+        </tr>
+        <tr>
+          <td>Parameters</td>
+          <td>
+            <pre>xa = {{ fractal.xa }}
+xb = {{ fractal.xb }}
+ya = {{ fractal.ya }}
+yb = {{ fractal.yb }}</pre>
+          </td>
+        </tr>
+        <tr>
+          <td>Filesize</td>
+          <td>{{ fractal.size}} bytes</td>
+        </tr>
+        <tr>
+          <td>Checksum</td>
+          <td><pre>{{ fractal.checksum }}</pre></td>
+        </tr>
+        <tr>
+          <td>Generated by</td>
+          <td>{{ fractal.generated_by }}</td>
+        </tr>
+      </tbody>
+    </table>
+  </div>
+</div>
+{% endfor %}
+{{render_pagination(fractals)}}
+{% endblock %}
--- a/faafo/faafo/queues.py
+++ b/faafo/faafo/queues.py
@@ -0,0 +1,32 @@
+# Licensed 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.
+
+import copy
+
+import kombu
+from oslo_config import cfg
+
+task_exchange = kombu.Exchange('tasks', type='direct')
+task_queue = kombu.Queue('normal', task_exchange, routing_key='normal')
+
+queues_opts = [
+    cfg.StrOpt('transport-url',
+               default='amqp://guest:guest@localhost:5672//',
+               help='AMQP connection URL.')
+]
+
+cfg.CONF.register_opts(queues_opts)
+
+
+def list_opts():
+    """Entry point for oslo-config-generator."""
+    return [(None, copy.deepcopy(queues_opts))]
--- a/faafo/faafo/version.py
+++ b/faafo/faafo/version.py
@@ -0,0 +1,15 @@
+#  Licensed 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.
+
+import pbr.version
+
+version_info = pbr.version.VersionInfo('faafo')
--- a/faafo/faafo/worker/init.py
+++ b/faafo/faafo/worker/init.py
--- a/faafo/faafo/worker/service.py
+++ b/faafo/faafo/worker/service.py
@@ -0,0 +1,156 @@
+#!/usr/bin/env python
+
+# Licensed 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.
+
+# based on http://code.activestate.com/recipes/577120-julia-fractals/
+
+import base64
+import copy
+import hashlib
+import json
+import os
+from PIL import Image
+import random
+import socket
+import tempfile
+import time
+
+from kombu.mixins import ConsumerMixin
+from oslo_config import cfg
+from oslo_log import log
+import requests
+
+from faafo import queues
+
+LOG = log.getLogger('faafo.worker')
+CONF = cfg.CONF
+
+
+worker_opts = {
+    cfg.StrOpt('endpoint-url',
+               default='http://localhost',
+               help='API connection URL')
+}
+
+CONF.register_opts(worker_opts)
+
+
+def list_opts():
+    """Entry point for oslo-config-generator."""
+    return [(None, copy.deepcopy(worker_opts))]
+
+
+class JuliaSet(object):
+
+    def __init__(self, width, height, xa=-2.0, xb=2.0, ya=-1.5, yb=1.5,
+                 iterations=255):
+        self.xa = xa
+        self.xb = xb
+        self.ya = ya
+        self.yb = yb
+        self.iterations = iterations
+        self.width = width
+        self.height = height
+        self.draw()
+
+    def draw(self):
+        self.image = Image.new("RGB", (self.width, self.height))
+        c, z = self._set_point()
+        for y in range(self.height):
+            zy = y * (self.yb - self.ya) / (self.height - 1) + self.ya
+            for x in range(self.width):
+                zx = x * (self.xb - self.xa) / (self.width - 1) + self.xa
+                z = zx + zy * 1j
+                for i in range(self.iterations):
+                    if abs(z) > 2.0:
+                        break
+                    z = z * z + c
+                self.image.putpixel((x, y),
+                                    (i % 8 * 32, i % 16 * 16, i % 32 * 8))
+
+    def get_file(self):
+        with tempfile.NamedTemporaryFile(delete=False) as fp:
+            self.image.save(fp, "PNG")
+            return fp.name
+
+    def _set_point(self):
+        random.seed()
+        while True:
+            cx = random.random() * (self.xb - self.xa) + self.xa
+            cy = random.random() * (self.yb - self.ya) + self.ya
+            c = cx + cy * 1j
+            z = c
+            for i in range(self.iterations):
+                if abs(z) > 2.0:
+                    break
+                z = z * z + c
+            if i > 10 and i < 100:
+                break
+
+        return (c, z)
+
+
+class Worker(ConsumerMixin):
+
+    def __init__(self, connection):
+        self.connection = connection
+
+    def get_consumers(self, Consumer, channel):
+        return [Consumer(queues=queues.task_queue,
+                         accept=['json'],
+                         callbacks=[self.process])]
+
+    def process(self, task, message):
+        LOG.info("processing task %s" % task['uuid'])
+        LOG.debug(task)
+        start_time = time.time()
+        juliaset = JuliaSet(task['width'],
+                            task['height'],
+                            task['xa'],
+                            task['xb'],
+                            task['ya'],
+                            task['yb'],
+                            task['iterations'])
+        elapsed_time = time.time() - start_time
+        LOG.info("task %s processed in %f seconds" %
+                 (task['uuid'], elapsed_time))
+
+        filename = juliaset.get_file()
+        LOG.debug("saved result of task %s to temporary file %s" %
+                  (task['uuid'], filename))
+        with open(filename, "rb") as fp:
+            size = os.fstat(fp.fileno()).st_size
+            image = base64.b64encode(fp.read())
+        checksum = hashlib.sha256(open(filename, 'rb').read()).hexdigest()
+        os.remove(filename)
+        LOG.debug("removed temporary file %s" % filename)
+
+        result = {
+            'uuid': task['uuid'],
+            'duration': elapsed_time,
+            'image': image,
+            'checksum': checksum,
+            'size': size,
+            'generated_by': socket.gethostname()
+        }
+
+        # NOTE(berendt): only necessary when using requests < 2.4.2
+        headers = {'Content-type': 'application/json',
+                   'Accept': 'text/plain'}
+
+        requests.put("%s/v1/fractal/%s" %
+                     (CONF.endpoint_url, str(task['uuid'])),
+                     json.dumps(result), headers=headers)
+
+        message.ack()
+        return result
--- a/faafo/requirements.txt
+++ b/faafo/requirements.txt
@@ -0,0 +1,17 @@
+pbr>=1.6
+pytz
+positional
+iso8601
+anyjson>=0.3.3
+eventlet>=0.17.4
+PyMySQL>=0.6.2,<0.7  # 0.7 design change breaks faafo, MIT License
+Pillow==2.4.0 # MIT
+requests>=2.5.2
+Flask-Bootstrap
+Flask>=0.10,<1.0
+flask-restless
+flask-sqlalchemy
+oslo.config>=2.3.0  # Apache-2.0
+oslo.log>=1.8.0  # Apache-2.0
+PrettyTable>=0.7,<0.8
+kombu>=3.0.7
--- a/faafo/setup.cfg
+++ b/faafo/setup.cfg
@@ -0,0 +1,54 @@
+[metadata]
+name = faafo
+summary = First App Application for OpenStack
+description-file =
+    README.rst
+author = OpenStack Documentation
+author-email = openstack-doc@lists.openstack.org
+home-page = http://docs.openstack.org/developer/faafo/
+classifier =
+    Environment :: OpenStack
+    Intended Audience :: Information Technology
+    Intended Audience :: System Administrators
+    License :: OSI Approved :: Apache Software License
+    Operating System :: POSIX :: Linux
+    Programming Language :: Python
+    Programming Language :: Python :: 2
+    Programming Language :: Python :: 2.7
+
+[files]
+packages =
+    faafo
+scripts =
+    bin/faafo
+    bin/faafo-worker
+extra_files =
+    faafo/api/templates/index.html
+data_files =
+    /etc/faafo = etc/faafo.conf
+
+[global]
+setup-hooks =
+    pbr.hooks.setup_hook
+
+[entry_points]
+console_scripts =
+     faafo-api = faafo.api.service:main
+oslo.config.opts =
+      faafo.api = faafo.api.service:list_opts
+      faafo.worker = faafo.worker.service:list_opts
+      faafo.queues= faafo.queues:list_opts
+
+[build_sphinx]
+source-dir = doc/source
+build-dir = doc/build
+all_files = 1
+
+[upload_sphinx]
+upload-dir = doc/build/html
+
+[wheel]
+universal = 1
+
+[pbr]
+warnerrors = true
--- a/faafo/setup.py
+++ b/faafo/setup.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+# Copyright (c) 2013 Hewlett-Packard Development Company, L.P.
+#
+# Licensed 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.
+
+import setuptools
+
+# In python < 2.7.4, a lazy loading of package `pbr` will break
+# setuptools if some other modules registered functions in `atexit`.
+# solution from: http://bugs.python.org/issue15881#msg170215
+try:
+    import multiprocessing  # noqa
+except ImportError:
+    pass
+
+setuptools.setup(
+    setup_requires=['pbr'],
+    pbr=True)
--- a/faafo/test-requirements.txt
+++ b/faafo/test-requirements.txt
@@ -0,0 +1,2 @@
+hacking<0.11,>=0.10
+sphinx>=1.1.2,!=1.2.0,!=1.3b1,<1.3
--- a/faafo/tox.ini
+++ b/faafo/tox.ini
@@ -0,0 +1,27 @@
+[tox]
+minversion = 1.6
+envlist = pep8
+skipsdist = True
+
+[testenv]
+usedevelop = True
+deps = -r{toxinidir}/test-requirements.txt
+       -r{toxinidir}/requirements.txt
+install_command = pip install -U {opts} {packages}
+
+[testenv:venv]
+commands = {posargs}
+
+[testenv:docs]
+commands = python setup.py build_sphinx
+
+[testenv:genconfig]
+commands =
+  oslo-config-generator --config-file etc/oslo-config-generator/faafo.conf
+
+[testenv:pep8]
+commands = flake8 {posargs}
+
+[flake8]
+show-source = True
+exclude=.venv,.git,.tox,*egg*,build,*openstack/common*