75fa095aa5
Currently many of the error messages regarding the configuration file
are not really helpful.
To improve reporting this patch adds validation of the configuration
files using the jsonschema module.
Example:
Forgetting ':' at the end of a layer definition, like this:
repos:
meta-iot2000:
layers:
meta-iot2000-example
^
Exception before:
TypeError: string indices must be integers
Exception after:
Validation Error:
'meta-iot2000-example' is not of type 'object'
Failed validating 'type' in schema['properties']['repos']['additionalProperties']['properties']['layers']:
{'additionalProperties': {'oneOf': [{'type': 'null'},
{'type': 'integer'},
{'type': 'boolean'},
{'type': 'string'}]},
'type': 'object'}
On instance['repos']['meta-iot2000']['layers']:
'meta-iot2000-example'
This patch adds 'jsonschema' as an additional dependency.
Signed-off-by: Claudius Heine <ch@denx.de>
367 lines
15 KiB
ReStructuredText
367 lines
15 KiB
ReStructuredText
User Guide
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==========
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Dependencies & installation
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---------------------------
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This projects depends on
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- Python 3
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- distro Python 3 package
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- jsonschema Python 3 package
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- PyYAML Python 3 package (optional, for yaml file support)
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If you need Python 2 support consider sending patches. The most
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obvious place to start is to use the trollius package intead of
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asyncio.
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To install kas into your python site-package repository, run::
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$ sudo pip3 install .
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Usage
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-----
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There are three options for using kas:
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- Install it locally via pip to get the ``kas`` command.
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- Use the docker image. In this case, run the commands in the examples below
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within ``docker run -it kasproject/kas:<version> sh`` or bind-mount the
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project into the container. See https://hub.docker.com/r/kasproject for all
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available images.
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- Use the **run-kas** wrapper from this directory. In this case replace ``kas``
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in the examples below with ``path/to/run-kas``.
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Start build::
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$ kas build /path/to/kas-project.yml
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Alternatively, experienced bitbake users can invoke usual **bitbake** steps
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manually, e.g.::
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$ kas shell /path/to/kas-project.yml -c 'bitbake dosfsutils-native'
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kas will place downloads and build artifacts under the current directory when
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being invoked. You can specify a different location via the environment
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variable `KAS_WORK_DIR`.
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Command line usage
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~~~~~~~~~~~~~~~~~~
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.. argparse::
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:module: kas.kas
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:func: kas_get_argparser
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:prog: kas
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Environment variables
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~~~~~~~~~~~~~~~~~~~~~
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+-----------------------+-----------------------------------------------------+
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| Environment variables | Description |
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+=======================+=====================================================+
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| ``KAS_WORK_DIR`` | The path of the kas work directory, current work |
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| | directory is the default. |
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+-----------------------+-----------------------------------------------------+
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| ``KAS_REPO_REF_DIR`` | The path to the repository reference directory. |
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| | Repositories in this directory are user as |
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| | references when cloning. In order for kas to find |
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| | those repositories, they have to be named in a |
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| | specific way. The repo URLs are translated like |
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| | this: "https://github.com/siemens/meta-iot2000.git" |
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| | resolves to the name |
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| | "github.com.siemens.meta-iot2000.git". |
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+-----------------------+-----------------------------------------------------+
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| ``KAS_DISTRO`` | This overwrites the respective setting in the |
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| ``KAS_MACHINE`` | configuration file. |
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| ``KAS_TARGET`` | |
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| ``KAS_TASK`` | |
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+-----------------------+-----------------------------------------------------+
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| ``SSH_PRIVATE_KEY`` | Path to the private key file that should be added |
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| | to an internal ssh-agent. This key cannot be |
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| | password protected. This setting is useful for CI |
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| | build servers. On desktop machines, an ssh-agent |
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| | running outside the kas environment is more useful. |
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+-----------------------+-----------------------------------------------------+
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| ``SSH_AGENT_PID`` | SSH agent process id and authentication socket. |
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| ``SSH_AUTH_SOCK`` | Used for cloning over SSH (alternative to |
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| | ``SSH_PRIVATE_KEY``). |
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+-----------------------+-----------------------------------------------------+
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| ``DL_DIR`` | Environment variables that are transferred to the |
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| ``SSTATE_DIR`` | bitbake environment. |
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| ``TMPDIR`` | |
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+-----------------------+-----------------------------------------------------+
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| ``http_proxy`` | This overwrites the proxy configuration in the |
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| ``https_proxy`` | configuration file. |
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| ``no_proxy`` | |
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+-----------------------+-----------------------------------------------------+
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| ``GIT_PROXY_COMMAND`` | Set proxy for native git fetches. ``NO_PROXY`` is |
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| ``NO_PROXY`` | evaluated by OpenEmbedded's oe-git-proxy script. |
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+-----------------------+-----------------------------------------------------+
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| ``SHELL`` | The shell to start when using the `shell` plugin. |
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+-----------------------+-----------------------------------------------------+
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| ``TERM`` | The terminal options used in the `shell` plugin. |
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+-----------------------+-----------------------------------------------------+
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Use Cases
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---------
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1. Initial build/setup::
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$ mkdir $PROJECT_DIR
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$ cd $PROJECT_DIR
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$ git clone $PROJECT_URL meta-project
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$ kas build meta-project/kas-project.yml
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2. Update/rebuild::
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$ cd $PROJECT_DIR/meta-project
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$ git pull
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$ kas build kas-project.yml
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Project Configuration
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---------------------
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Currently JSON and YAML is supported as the base file format. Since YAML is
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arguable easier to read, this documentation focuses on the YAML format.
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.. code-block:: yaml
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# Every file needs to contain a header, that provides kas with information
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# about the context of this file.
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header:
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# The `version` entry in the header describes for which configuration
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# format version this file was created for. It is used by kas to figure
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# out if it is compatible with this file. The version is an integer that
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# is increased on every format change.
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version: x
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# The machine as it is written into the `local.conf` of bitbake.
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machine: qemu
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# The distro name as it is written into the `local.conf` of bitbake.
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distro: poky
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repos:
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# This entry includes the repository where the config file is located
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# to the bblayers.conf:
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meta-custom:
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# Here we include a list of layers from the poky repository to the
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# bblayers.conf:
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poky:
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url: "https://git.yoctoproject.org/git/poky"
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refspec: 89e6c98d92887913cadf06b2adb97f26cde4849b
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layers:
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meta:
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meta-poky:
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meta-yocto-bsp:
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A minimal input file consist out of the ``header``, ``machine``, ``distro``,
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and ``repos``.
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Additionally, you can add ``bblayers_conf_header`` and ``local_conf_header``
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which are strings that are added to the head of the respective files
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(``bblayers.conf`` or ``local.conf``):
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.. code-block:: yaml
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bblayers_conf_header:
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meta-custom: |
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POKY_BBLAYERS_CONF_VERSION = "2"
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BBPATH = "${TOPDIR}"
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BBFILES ?= ""
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local_conf_header:
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meta-custom: |
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PATCHRESOLVE = "noop"
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CONF_VERSION = "1"
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IMAGE_FSTYPES = "tar"
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``meta-custom`` in these examples should be a unique name (in project scope)
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for this configuration entries. We assume that your configuration file is part
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of a ``meta-custom`` repository/layer. This way its possible to overwrite or
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append entries in files that include this configuration by naming an entry the
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same (overwriting) or using a unused name (appending).
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Including in-tree configuration files
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Its currently possible to include kas configuration files from the same
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repository/layer like this:
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.. code-block:: yaml
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header:
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version: x
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includes:
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- base.yml
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- bsp.yml
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- product.yml
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The specified files are addressed relative to your current configuration file.
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Including configuration files from other repos
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Its also possible to include configuration files from other repos like this:
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.. code-block:: yaml
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header:
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version: x
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includes:
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- repo: poky
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file: kas-poky.yml
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- repo: meta-bsp-collection
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file: hw1/kas-hw-bsp1.yml
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- repo: meta-custom
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file: products/product.yml
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repos:
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meta-custom:
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meta-bsp-collection:
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url: "https://www.example.com/git/meta-bsp-collection"
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refspec: 3f786850e387550fdab836ed7e6dc881de23001b
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layers:
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# Additional to the layers that are added from this repository
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# in the hw1/kas-hw-bsp1.yml, we add here an additional bsp
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# meta layer:
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meta-custom-bsp:
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poky:
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url: "https://git.yoctoproject.org/git/poky"
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refspec: 89e6c98d92887913cadf06b2adb97f26cde4849b
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layers:
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# If `kas-poky.yml` adds the `meta-yocto-bsp` layer and we
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# do not want it in our bblayers for this project, we can
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# overwrite it by setting:
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meta-yocto-bsp: exclude
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The files are addressed relative to the git repository path.
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The include mechanism collects and merges the content from top to buttom and
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depth first. That means that settings in one include file are overwritten
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by settings in a latter include file and entries from the last include file can
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be overwritten by the current file. While merging all the dictionaries are
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merged recursive while preserving the order in which the entries are added to
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the dictionary. This means that ``local_conf_header`` entries are added to the
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``local.conf`` file in the same order in which they are defined in the
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different include files. Note that the order of the configuration file entries
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is not preserved within one include file, because the parser creates normal
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unordered dictionaries.
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Configuration reference
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~~~~~~~~~~~~~~~~~~~~~~~
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* ``header``: dict [required]
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The header of every kas configuration file. It contains information about
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context of the file.
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* ``version``: integer [required]
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Lets kas check if it is compatible with this file. See the
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:doc:`configuration format changelog <format-changelog>` for the
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format history and latest available version.
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* ``includes``: list [optional]
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A list of configuration files this current file is based on. They are
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merged in order they are stated. So a latter one could overwrite
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settings from previous files. The current file can overwrite settings
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from every included file. An item in this list can have one of two types:
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* item: string
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The path to a kas configuration file, relative to the current file.
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* item: dict
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If files from other repositories should be included, choose this
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representation.
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* ``repo``: string [required]
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The id of the repository where the file is located. The repo
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needs to be defined in the ``repos`` dictionary as ``<repo-id>``.
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* ``file``: string [required]
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The path to the file relative to the root of the repository.
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* ``machine``: string [optional]
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Contains the value of the ``MACHINE`` variable that is written into the
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``local.conf``. Can be overwritten by the ``KAS_MACHINE`` environment
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variable and defaults to ``qemu``.
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* ``distro``: string [optional]
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Contains the value of the ``DISTRO`` variable that is written into the
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``local.conf``. Can be overwritten by the ``KAS_DISTRO`` environment
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variable and defaults to ``poky``.
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* ``target``: string [optional] or list [optional]
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Contains the target or a list of targets to build by bitbake. Can be
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overwritten by the ``KAS_TARGET`` environment variable and defaults to
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``core-image-minimal``. Space is used as a delimiter if multiple targets
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should be specified via the environment variable.
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* ``task``: string [optional]
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Contains the task to build by bitbake. Can be overwritten by the
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``KAS_TASK`` environment variable and defaults to ``build``.
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* ``repos``: dict [optional]
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Contains the definitions of all available repos and layers.
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* ``<repo-id>``: dict [optional]
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Contains the definition of a repository and the layers, that should be
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part of the build. If the value is ``None``, the repository, where the
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current configuration file is located is defined as ``<repo-id>`` and
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added as a layer to the build.
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* ``name``: string [optional]
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Defines under which name the repository is stored. If its missing
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the ``<repo-id>`` will be used.
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* ``url``: string [optional]
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The url of the git repository. If this is missing, no git operations
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are performed.
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* ``refspec``: string [optional]
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The refspec that should be used. Required if an ``url`` was specified.
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* ``path``: string [optional]
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The path where the repository is stored.
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If the ``url`` and ``path`` is missing, the repository where the
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current configuration file is located is defined.
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If the ``url`` is missing and the path defined, this entry references
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the directory the path points to.
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If the ``url`` as well as the ``path`` is defined, the path is used to
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overwrite the checkout directory, that defaults to ``kas_work_dir``
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+ ``repo.name``.
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* ``layers``: dict [optional]
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Contains the layers from this repository that should be added to the
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``bblayers.conf``. If this is missing or ``None`` or and empty
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dictionary, the path to the repo itself is added as a layer.
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* ``<layer-path>``: enum [optional]
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Adds the layer with ``<layer-path>`` that is relative to the
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repository root directory, to the ``bblayers.conf`` if the value of
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this entry is not in this list: ``['disabled', 'excluded', 'n', 'no',
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'0', 'false']``. This way it is possible to overwrite the inclusion
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of a layer in latter loaded configuration files.
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* ``bblayers_conf_header``: dict [optional]
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This contains strings that should be added to the ``bblayers.conf`` before
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any layers are included.
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* ``<bblayers-conf-id>``: string [optional]
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A string that is added to the ``bblayers.conf``. The entry id
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(``<bblayers-conf-id>``) should be unique if lines should be added and
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can be the same from another included file, if this entry should be
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overwritten. The lines are added to ``bblayers.conf`` in the same order
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as they are included from the different configuration files.
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* ``local_conf_header``: dict [optional]
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This contains strings that should be added to the ``local.conf``.
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* ``<local-conf-id>``: string [optional]
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A string that is added to the ``local.conf``. It operates in the same way
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as the ``bblayers_conf_header`` entry.
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* ``proxy_config``: dict [optional]
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Defines the proxy configuration bitbake should use. Every entry can be
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overwritten by the respective environment variables.
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* ``http_proxy``: string [optional]
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* ``https_proxy``: string [optional]
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* ``no_proxy``: string [optional]
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