<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"
[<!ENTITY % poky SYSTEM "../poky.ent"> %poky; ] >

<chapter id='toaster-manual-setup-and-use'>

<title>Setting Up and Using Toaster</title>

    <section id='starting-toaster-for-local-development'>
        <title>Starting Toaster for Local Development</title>

        <para>
            Once you have set up the Yocto Project and installed the
            Toaster system dependencies as described in
            "<link linkend='toaster-manual-start'>Preparing to Use Toaster</link>",
            you are ready to start Toaster.
        </para>

        <para>
            Navigate to the root of your
            <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>
            (e.g. <filename>poky</filename>):
            <literallayout class='monospaced'>
     $ cd poky
            </literallayout>
            Once in that directory, source the build environment script:
            <literallayout class='monospaced'>
     $ source oe-init-build-env
            </literallayout>
            Next, from the build directory (e.g.
            <filename>poky/build</filename>), start Toaster using this
            command:
            <literallayout class='monospaced'>
     $ source ../bitbake/bin/toaster
            </literallayout>
            You can now run your builds from the command line, or with
            Toaster as explained in section
            "<link linkend='using-the-toaster-web-interface'>Using the Toaster Web Interface</link>".
        </para>

        <para>
            To access the Toaster web interface, open your favorite
            browser and enter the following:
            <literallayout class='monospaced'>
     http://127.0.0.1:8000
            </literallayout>
        </para>
    </section>

    <section id='setting-a-different-port'>
        <title>Setting a Different Port</title>

        <para>
            By default, Toaster starts on port 8000.
            You can use the <filename>WEBPORT</filename> parameter to
            set a different port.
            For example, the following command sets the port to "8400":
            <literallayout class='monospaced'>
     $ source ../bitbake/bin/toaster webport=8400
            </literallayout>
        </para>
    </section>

    <section id='the-directory-for-cloning-layers'>
        <title>The Directory for Cloning Layers</title>

        <para>
            Toaster creates a <filename>_toaster_clones</filename>
            directory inside your Source Directory
            (i.e. <filename>poky</filename>) to clone any layers
            needed for your builds.
        </para>

        <para>
            Alternatively, if you would like all of your Toaster related
            files and directories to be in a particular location other than
            the default, you can set the <filename>TOASTER_DIR</filename>
            environment variable, which takes precedence over your current
            working directory.
            Setting this environment variable causes Toaster to create and use
            <filename>$TOASTER_DIR./_toaster_clones</filename>.
        </para>
    </section>

    <section id='toaster-the-build-directory'>
        <title>The Build Directory</title>

        <para>
            Toaster creates a build directory within your Source
            Directory (e.g. <filename>poky</filename>) to execute
            the builds.
        </para>

        <para>
            Alternatively, if you would like all of your Toaster related files
            and directories to be in a particular location, you can set
            the <filename>TOASTER_DIR</filename> environment variable,
            which takes precedence over your current working directory.
            Setting this environment variable causes Toaster to use
            <filename>$TOASTER_DIR/build</filename> as the build directory.
        </para>
    </section>

    <section id='toaster-creating-a-django-super-user'>
        <title>Creating a Django Superuser</title>

        <para>
            Toaster is built on the
            <ulink url='https://www.djangoproject.com/'>Django framework</ulink>.
            Django provides an administration interface you can use
            to edit Toaster configuration parameters.
        </para>

        <para>
            To access the Django administration interface, you must
            create a superuser by following these steps:
            <orderedlist>
                <listitem><para>
                    If you used <filename>virtualenv</filename>, which is
                    recommended, to set up the Toaster system dependencies,
                    you need be sure the virtual environment is activated.
                    To activate this environment, use the following:
                    <literallayout class='monospaced'>
     $ source venv/bin/activate
                    </literallayout>
                    </para></listitem>
                <listitem><para>
                    From the root of your checkout directory, invoke the
                    following command from <filename>manage.py</filename>:
                    <literallayout class='monospaced'>
     $ ./bitbake/lib/toaster/manage.py createsuperuser
                    </literallayout>
                    </para></listitem>
                <listitem><para>
                    Django prompts you for the username, which you need to
                    provide.
                    </para></listitem>
                <listitem><para>
                    Django prompts you for an email address, which is
                    optional.
                    </para></listitem>
                <listitem><para>
                    Django prompts you for a password, which you must provide.
                    </para></listitem>
                <listitem><para>
                    Django prompts you to re-enter your password for verification.
                    </para></listitem>
            </orderedlist>
            After completing these steps, the following confirmation message
            appears:
            <literallayout class='monospaced'>
     Superuser created successfully.
            </literallayout>
        </para>

        <para>
            Creating a superuser allows you to access the Django administration
            interface through a browser.
            The URL for this interface is the same as the URL used for the
            Toaster instance with "/admin" on the end.
            For example, if you are running Toaster locally, use the
            following URL:
            <literallayout class='monospaced'>
     http://127.0.0.1:8000/admin
            </literallayout>
            You can use the Django administration interface to set Toaster
            configuration parameters such as the build directory, layer sources,
            default variable values, and BitBake versions.
        </para>
    </section>

    <section id='toaster-setting-up-a-production-instance-of-toaster'>
        <title>Setting Up a Production Instance of Toaster</title>

        <para>
            You can use a production instance of Toaster to share the
            Toaster instance with remote users, multiple users, or both.
            The production instance is also the setup that can cope with
            heavier loads on the web service.
            Use the instructions in the following sections to set up
            Toaster to run builds through the Toaster web interface.
        </para>

        <section id='toaster-production-instance-requirements'>
            <title>Requirements</title>

            <para>
                Be sure you meet the following requirements:
                <note>
                    You must comply with all Apache,
                    <filename>mod-wsgi</filename>, and Mysql requirements.
                </note>
                <itemizedlist>
                    <listitem><para>
                        Have all the build requirements as described in
                        "<link linkend='toaster-setting-up-the-basic-system-requirements'>Setting Up the Basic System Requirements</link>"
                        chapter.
                        </para></listitem>
                    <listitem><para>
                        Have an Apache webserver.
                        </para></listitem>
                    <listitem><para>
                        Have <filename>mod-wsgi</filename> for the Apache
                        webserver.
                        </para></listitem>
                    <listitem><para>
                        Use the Mysql database server.
                        </para></listitem>
                    <listitem><para>
                        If you are using Ubuntu 14.04.3, run the following:
                        <literallayout class='monospaced'>
     $ sudo apt-get install apache2 libapache2-mod-wsgi mysql-server virtualenv libmysqlclient-dev
                        </literallayout>
                        </para></listitem>
                    <listitem><para>
                        If you are using Fedora 22 or a RedHat distribution, run
                        the following:
                        <literallayout class='monospaced'>
     $ sudo dnf install httpd mod_wsgi python-virtualenv gcc mysql-devel
                        </literallayout>
                        </para></listitem>
                </itemizedlist>
            </para>
        </section>

        <section id='toaster-installation-steps'>
            <title>Installation</title>

            <para>
                Perform the following steps to install Toaster:
                <orderedlist>
                    <listitem><para>
                        Checkout a copy of <filename>poky</filename>
                        into the web server directory.
                        You will be using <filename>/var/www/toaster</filename>:
                        <literallayout class='monospaced'>
     $ mkdir -p /var/www/toaster
     $ cd /var/www/toaster/
     $ git clone git://git.yoctoproject.org/poky
     $ git checkout &DISTRO_NAME;
                        </literallayout>
                        </para></listitem>
                    <listitem><para>
                        Initialize a virtual environment and install Toaster
                        dependencies.
                        Using a virtual environment keeps the Python packages
                        isolated from your system-provided packages:
                        <literallayout class='monospaced'>
     $ cd /var/www/toaster/
     $ virtualenv venv
     $ source ./venv/bin/activate
     $ pip install -r ./poky/bitbake/toaster-requirements.txt
     $ pip install mysql
     $ pip install MySQL-python
                        </literallayout>
                        <note>
                            Isolating these packages is not required but is
                            recommended.
                            Alternatively, you can use your operating system's
                            package manager to install the packages.
                        </note>
                        </para></listitem>
                    <listitem><para>
                        Configure Toaster by editing
                        <filename>/var/www/toaster/poky/bitbake/lib/toaster/toastermain/settings.py</filename>
                        as follows:
                        <itemizedlist>
                            <listitem><para>
                                Edit the <filename>DATABASE</filename> settings:
                                <literallayout class='monospaced'>
     DATABASES = {
         'default': {
             'ENGINE': 'django.db.backends.mysql',
             'NAME': 'toaster_data',
             'USER': 'toaster',
             'PASSWORD': 'yourpasswordhere',
             'HOST': 'localhost',
             'PORT': '3306',
     }
                                </literallayout>
                                </para></listitem>
                            <listitem><para>
                                Edit the <filename>SECRET_KEY</filename>:
                                <literallayout class='monospaced'>
     SECRET_KEY = '<replaceable>your_secret_key</replaceable>'
                                </literallayout>
                                </para></listitem>
                            <listitem><para>
                                Edit the <filename>STATIC_ROOT</filename>:
                                <literallayout class='monospaced'>
     STATIC_ROOT = '/var/www/toaster/static_files/'
                                </literallayout>
                                </para></listitem>
                        </itemizedlist>
                        </para></listitem>
                    <listitem><para>
                        Add the database and user to the <filename>mysql</filename>
                        server defined earlier:
                        <literallayout class='monospaced'>
     $ mysql -u root -p
     mysql> CREATE DATABASE toaster;
     mysql> CREATE USER 'toaster'@'localhost' identified by 'yourpasswordhere';
     mysql> GRANT all on toaster_data.* to 'toaster'@'localhost';
     mysql> quit
                        </literallayout>
                        </para></listitem>
                    <listitem><para>
                        Get Toaster to create the database schema,
                        default data, and gather the statically-served files:
                        <literallayout class='monospaced'>
     $ cd  /var/www/toaster/poky/
     $ ./bitbake/lib/toaster/manage.py syncdb --migrate
     $ ./bitbake/lib/toaster/manage.py loadconf ./meta-yocto/conf/toasterconf.json
     $ ./bitbake/lib/toaster/manage.py lsupdates
     $ ./bitbake/lib/toaster/manage.py collectstatic
                        </literallayout>
                        </para>

                        <para>
                            For the above set of commands, after moving to the
                            <filename>poky</filename> directory,
                            the <filename>syncdb</filename> command with the
                            <filename>migrate</filename> option makes sure the database
                            schema has had changes propagated correctly (i.e.
                            migrations).
                            See the
                            <ulink url='https://south.readthedocs.org/en/latest/commands.html#syncdb'><filename>syncdb</filename></ulink>
                            command for more information.
                        </para>

                        <para>
                            The
                            <link linkend='toaster-command-loadconf'><filename>loadconf</filename></link>
                            command loads the
                            <filename>./meta-yocto/conf/toasterconf.json</filename>
                            JSON file.
                        </para>

                        <para>
                            The <filename>lsupdates</filename> command fetches
                            information about machines, recipes and
                            layers available as part of OpenEmbedded.
                            The information is fetched from the
                            <ulink url='http://layers.openembedded.org/'>OpenEmbedded Metadata Index</ulink>.
                            This information provides easy access to metadata
                            from Toaster, and it is key for Toaster's usability.
                            It is not recommended that you use Toaster without
                            fetching this information."
                        </para>

                        <para>
                            Finally, the <filename>collectstatic</filename> command
                            is a Django framework command that collects all the
                            statically served files into a designated directory to
                            be served up by the Apache web server.
                            For more information on this Django command, see
                            <ulink url='https://docs.djangoproject.com/en/1.7/ref/contrib/staticfiles/'></ulink>.
                        </para></listitem>
                    <listitem><para>
                        Add an Apache configuration file for Toaster to your Apache web
                        server's configuration directory.
                        If you are using Ubuntu or Debian, put the file here:
                        <literallayout class='monospaced'>
     /etc/apache2/conf-available/toaster.conf
                        </literallayout>
                        If you are using Fedora or RedHat, put it here:
                        <literallayout class='monospaced'>
     /etc/httpd/conf.d/toaster.conf
                        </literallayout>
                        Following is a sample Apache configuration for Toaster
                        you can follow:
                        <literallayout class='monospaced'>
     Alias /static /var/www/toaster/static_files
     &lt;Directory /var/www/toaster/static_files&gt;
             Order allow,deny
             Allow from all
             Require all granted
     &lt;/Directory&gt;

     WSGIDaemonProcess toaster_wsgi python-path=/var/www/toaster/poky/bitbake/lib/toaster:/var/www/toaster/venv/lib/python2.7/site-packages

     WSGIScriptAlias / "/var/www/toaster/poky/bitbake/lib/toaster/toastermain/wsgi.py"
     &lt;Location /&gt;
         WSGIProcessGroup toastern_wsgi
     &lt;/Location&gt;
                        </literallayout>
                        If you are using Ubuntu or Debian,
                        you will need to enable the config and module for Apache:
                        <literallayout class='monospaced'>
     $ sudo a2enmod wsgi
     $ sudo a2enconf toaster
                        </literallayout>
                        Finally, restart Apache to make sure all new configuration
                        is loaded.
                        For Ubuntu and Debian use:
                        <literallayout class='monospaced'>
     $ sudo service apache2 restart
                        </literallayout>
                        For Fedora and RedHat use:
                        <literallayout class='monospaced'>
     $ sudo service httpd restart
                        </literallayout>
                        </para></listitem>
                    <listitem><para>
                        Install the build runner service.
                        This service needs to be running in order to dispatch
                        builds.
                        Use this command:
                        <literallayout class='monospaced'>
     /var/www/toaster/poky/bitbake/lib/toaster/manage.py runbuilds
                        </literallayout>
                        Here is an example:
                        <literallayout class='monospaced'>
     #!/bin/sh
     # toaster run builds dispatcher
     cd /var/www/toaster/
     source ./venv/bin/activate
     ./bitbake/lib/toaster/manage.py runbuilds
                        </literallayout>
                        </para></listitem>
                </orderedlist>
                You can now open up a browser and start using Toaster.
            </para>
        </section>
    </section>

    <section id='using-the-toaster-web-interface'>
        <title>Using the Toaster Web Interface</title>

        <para>
            The Toaster web interface allows you to do the following:
            <itemizedlist>
                <listitem><para>
                    Browse published layers in the
                    <ulink url='http://layers.openembedded.org'>OpenEmbedded Metadata Index</ulink>
                    that are available for your selected version of the build
                    system.
                    </para></listitem>
                <listitem><para>
                    Import your own layers for building.
                    </para></listitem>
                <listitem><para>
                    Add and remove layers from your configuration.
                    </para></listitem>
                <listitem><para>
                    Set configuration variables.
                    </para></listitem>
                <listitem><para>
                    Select a target or multiple targets to build.
                    </para></listitem>
                <listitem><para>
                    Start your builds.
                    </para></listitem>
                <listitem><para>
                    See what was built (recipes and packages) and what
                    packages were installed into your final image.
                    </para></listitem>
                <listitem><para>
                    Browse the directory structure of your image.
                    </para></listitem>
                <listitem><para>
                    See the value of all variables in your build configuration,
                    and which files set each value.
                    </para></listitem>
                <listitem><para>
                    Examine error, warning and trace messages to aid in
                    debugging.
                    </para></listitem>
                <listitem><para>
                    See information about the BitBake tasks executed and
                    reused during your build, including those that used
                    shared state.
                    </para></listitem>
                <listitem><para>
                    See dependency relationships between recipes, packages
                    and tasks.
                    </para></listitem>
                <listitem><para>
                    See performance information such as build time, task time,
                    CPU usage, and disk I/O.
                    </para></listitem>
            </itemizedlist>
        </para>

        <section id='web-interface-videos'>
            <title>Toaster Web Interface Videos</title>

            <para>
                Following are several videos that show how to use the Toaster GUI:
                <itemizedlist>
                    <listitem><para><emphasis>Build Configuration:</emphasis>
                        This
                        <ulink url='https://www.youtube.com/watch?v=qYgDZ8YzV6w'>video</ulink>
                        overviews and demonstrates build configuration for Toaster.
                        </para></listitem>
                    <listitem><para><emphasis>Build Custom Layers:</emphasis>
                        This
                        <ulink url='https://www.youtube.com/watch?v=QJzaE_XjX5c'>video</ulink>
                        shows you how to build custom layers that are used with
                        Toaster.
                        </para></listitem>
                    <listitem><para><emphasis>Toaster Homepage and Table Controls:</emphasis>
                        This
                        <ulink url='https://www.youtube.com/watch?v=QEARDnrR1Xw'>video</ulink>
                        goes over the Toaster entry page, and provides
                        an overview of the data manipulation capabilities of
                        Toaster, which include search, sorting and filtering by
                        different criteria.
                        </para></listitem>
                    <listitem><para><emphasis>Build Dashboard:</emphasis>
                        This
                        <ulink url='https://www.youtube.com/watch?v=KKqHYcnp2gE'>video</ulink>
                        shows you the build dashboard, a page providing an
                        overview of the information available for a selected build.
                        </para></listitem>
                    <listitem><para><emphasis>Image Information:</emphasis>
                        This
                        <ulink url='https://www.youtube.com/watch?v=XqYGFsmA0Rw'>video</ulink>
                        walks through the information Toaster provides
                        about images: packages installed and root file system.
                        </para></listitem>
                    <listitem><para><emphasis>Configuration:</emphasis>
                        This
                        <ulink url='https://www.youtube.com/watch?v=UW-j-T2TzIg'>video</ulink>
                        provides Toaster build configuration information.
                        </para></listitem>
                    <listitem><para><emphasis>Tasks:</emphasis>
                        This
                        <ulink url='https://www.youtube.com/watch?v=D4-9vGSxQtw'>video</ulink>
                        shows the information Toaster provides about the
                        tasks run by the build system.
                        </para></listitem>
                    <listitem><para><emphasis>Recipes and Packages Built:</emphasis>
                        This
                        <ulink url='https://www.youtube.com/watch?v=x-6dx4huNnw'>video</ulink>
                        shows the information Toaster provides about recipes
                        and packages built.
                        </para></listitem>
                    <listitem><para><emphasis>Performance Data:</emphasis>
                        This
                        <ulink url='https://www.youtube.com/watch?v=qWGMrJoqusQ'>video</ulink>
                        shows the build performance data provided by
                        Toaster.
                        </para></listitem>
                </itemizedlist>
            </para>
        </section>

        <section id='toaster-web-interface-preferred-version'>
            <title>Building a Specific Recipe Given Multiple Versions</title>

            <para>
                Occasionally, a layer might provide more than one version of
                the same recipe.
                For example, the <filename>openembedded-core</filename> layer
                provides two versions of the <filename>bash</filename> recipe
                (i.e. 3.2.48 and 4.3.30-r0) and two versions of the
                <filename>which</filename> recipe (i.e. 2.21 and 2.18).
                The following figure shows this exact scenario:
                <imagedata fileref="figures/bash-oecore.png" align="center" width="9in" depth="6in" />
            </para>

            <para>
                By default, the OpenEmbedded build system builds one of the
                two recipes.
                For the <filename>bash</filename> case, version 4.3.30-r0 is
                built by default.
                Unfortunately, Toaster as it exists, is not able to override
                the default recipe version.
                If you would like to build bash 3.2.48, you need to set the
                <ulink url='&YOCTO_DOCS_REF_URL;#var-PREFERRED_VERSION'><filename>PREFERRED_VERSION</filename></ulink>
                variable.
                You can do so from Toaster, using the "Add variable" form,
                which is available in the "BitBake variables" page of the
                project configuration section as shown in the following screen:
                <imagedata fileref="figures/add-variable.png" align="center" width="9in" depth="6in" />
            </para>

            <para>
                To specify <filename>bash</filename> 3.2.48 as the version to build,
                enter "PREFERRED_VERSION_bash" in the "Variable" field, and "3.2.48"
                in the "Value" field.
                Next, click the "Add variable" button:
                <imagedata fileref="figures/set-variable.png" align="center" width="9in" depth="6in" />
            </para>

            <para>
                After clicking the "Add variable" button, the settings for
                <filename>PREFERRED_VERSION</filename> are added to the bottom
                of the BitBake variables list.
                With these settings, the OpenEmbedded build system builds the
                desired version of the recipe rather than the default version:
                <imagedata fileref="figures/variable-added.png" align="center" width="9in" depth="6in" />
            </para>
        </section>
    </section>
</chapter>
