pylorax.api package

Submodules

pylorax.api.cmdline module

pylorax.api.cmdline.lorax_composer_parser()[source]

Return the ArgumentParser for lorax-composer

pylorax.api.compose module

Setup for composing an image

Adding New Output Types

The new output type must add a kickstart template to ./share/composer/ where the name of the kickstart (without the trailing .ks) matches the entry in compose_args.

The kickstart should not have any url or repo entries, these will be added at build time. The %packages section should be the last thing, and while it can contain mandatory packages required by the output type, it should not have the trailing %end because the package NEVRAs will be appended to it at build time.

compose_args should have a name matching the kickstart, and it should set the novirt_install parameters needed to generate the desired output. Other types should be set to False.

pylorax.api.compose.add_customizations(f, recipe)[source]

Add customizations to the kickstart file

Parameters:
  • f (open file object) – kickstart file object
  • recipe (Recipe object) –
Returns:

None
Raises:

RuntimeError if there was a problem writing to the kickstart
pylorax.api.compose.bootloader_append(line, kernel_append)[source]

Insert the kernel_append string into the –append argument

Parameters:
  • line (str) – The bootloader … line
  • kernel_append (str) – The arguments to append to the –append section

Using pykickstart to process the line is the best way to make sure it is parsed correctly, and re-assembled for inclusion into the final kickstart

pylorax.api.compose.compose_args(compose_type)[source]

Returns the settings to pass to novirt_install for the compose type

Parameters:compose_type (str) – The type of compose to create, from compose_types()

This will return a dict of options that match the ArgumentParser options for livemedia-creator. These are the ones the define the type of output, it’s filename, etc. Other options will be filled in by make_compose()

pylorax.api.compose.compose_types(share_dir)[source]

Returns a list of the supported output types

The output types come from the kickstart names in /usr/share/lorax/composer/*ks

pylorax.api.compose.customize_ks_template(ks_template, recipe)[source]

Customize the kickstart template and return it

Parameters:
  • ks_template (str) – The kickstart template
  • recipe (Recipe object) –

Apply customizations to existing template commands, or add defaults for ones that are missing and required.

Apply customizations.kernel.append to the bootloader argument in the template. Add bootloader line if it is missing.

Add default timezone if needed. It does NOT replace an existing timezone entry

pylorax.api.compose.firewall_cmd(line, settings)[source]

Update the firewall line with the new ports and services

Parameters:
  • line (str) – The firewall … line
  • settings (dict) – A dict with the list of services and ports to enable and disable

Using pykickstart to process the line is the best way to make sure it is parsed correctly, and re-assembled for inclusion into the final kickstart

pylorax.api.compose.get_default_services(recipe)[source]

Get the default string for services, based on recipe :param recipe: The recipe

Returns:string with “services” or “”
Return type:str

When no services have been selected we don’t need to add anything to the kickstart so return an empty string. Otherwise return “services” which will be updated with the settings.

pylorax.api.compose.get_extra_pkgs(dbo, share_dir, compose_type)[source]

Return extra packages needed for the output type

Parameters:
  • dbo (dnf.Base) – dnf base object
  • share_dir (str) – Path to the top level share directory
  • compose_type (str) – The type of output to create from the recipe
Returns:

List of package names (name only, not NEVRA)
Return type:

list

Currently this is only needed by live-iso, it reads ./live/live-install.tmpl and processes only the installpkg lines. It lists the packages needed to complete creation of the iso using the templates such as x86.tmpl

Keep in mind that the live-install.tmpl is shared between livemedia-creator and lorax-composer, even though the results are applied differently.

pylorax.api.compose.get_firewall_settings(recipe)[source]

Return the customizations.firewall settings

Parameters:recipe (Recipe object) – The recipe
Returns:A dict of settings
Return type:dict
pylorax.api.compose.get_kernel_append(recipe)[source]

Return the customizations.kernel append value

Parameters:recipe (Recipe object) –
Returns:append value or empty string
Return type:str
pylorax.api.compose.get_keyboard_layout(recipe)[source]

Return the customizations.locale.keyboard list

Parameters:recipe (Recipe object) – The recipe
Returns:The keyboard layout string
Return type:str
pylorax.api.compose.get_languages(recipe)[source]

Return the customizations.locale.languages list

Parameters:recipe (Recipe object) – The recipe
Returns:list of language strings
Return type:list
pylorax.api.compose.get_services(recipe)[source]

Return the customizations.services settings

Parameters:recipe (Recipe object) – The recipe
Returns:A dict of settings
Return type:dict
pylorax.api.compose.get_timezone_settings(recipe)[source]

Return the customizations.timezone dict

Parameters:recipe (Recipe object) –
Returns:append value or empty string
Return type:dict
pylorax.api.compose.keyboard_cmd(line, layout)[source]

Update the keyboard line with the layout

Parameters:
  • line (str) – The keyboard … line
  • settings (str) – The keyboard layout

Using pykickstart to process the line is the best way to make sure it is parsed correctly, and re-assembled for inclusion into the final kickstart

pylorax.api.compose.lang_cmd(line, languages)[source]

Update the lang line with the languages

Parameters:
  • line (str) – The lang … line
  • settings (list) – The list of languages

Using pykickstart to process the line is the best way to make sure it is parsed correctly, and re-assembled for inclusion into the final kickstart

pylorax.api.compose.move_compose_results(cfg, results_dir)[source]

Move the final image to the results_dir and cleanup the unneeded compose files

Parameters:
  • cfg (DataHolder) – Build configuration
  • results_dir (str) – Directory to put the results into
pylorax.api.compose.repo_to_ks(r, url='url')[source]

Return a kickstart line with the correct args. :param r: DNF repository information :type r: dnf.Repo :param url: “url” or “baseurl” to use for the baseurl parameter :type url: str :returns: kickstart command arguments for url/repo command :rtype: str

Set url to “baseurl” if it is a repo, leave it as “url” for the installation url.

pylorax.api.compose.services_cmd(line, settings)[source]

Update the services line with additional services to enable/disable

Parameters:
  • line (str) – The services … line
  • settings (dict) – A dict with the list of services to enable and disable

Using pykickstart to process the line is the best way to make sure it is parsed correctly, and re-assembled for inclusion into the final kickstart

pylorax.api.compose.start_build(cfg, dnflock, gitlock, branch, recipe_name, compose_type, test_mode=0)[source]

Start the build

Parameters:
  • cfg (ComposerConfig) – Configuration object
  • dnflock (YumLock) – Lock and YumBase for depsolving
  • recipe (str) – The recipe to build
  • compose_type (str) – The type of output to create from the recipe
Returns:

Unique ID for the build that can be used to track its status
Return type:

str
pylorax.api.compose.test_templates(dbo, share_dir)[source]

Try depsolving each of the the templates and report any errors

Parameters:dbo (dnf.Base) – dnf base object
Returns:List of template types and errors
Return type:List of errors

Return a list of templates and errors encountered or an empty list

pylorax.api.compose.timezone_cmd(line, settings)[source]

Update the timezone line with the settings

Parameters:
  • line (str) – The timezone … line
  • settings (dict) – A dict with timezone and/or ntpservers list

Using pykickstart to process the line is the best way to make sure it is parsed correctly, and re-assembled for inclusion into the final kickstart

pylorax.api.compose.write_ks_group(f, group)[source]

Write kickstart group entry

Parameters:
  • f (open file object) – kickstart file object
  • group – A blueprint group dictionary

gid is optional

pylorax.api.compose.write_ks_root(f, user)[source]

Write kickstart root password and sshkey entry

Parameters:
  • f (open file object) – kickstart file object
  • user (dict) – A blueprint user dictionary
Returns:

True if it wrote a rootpw command to the kickstart
Return type:

bool

If the entry contains a ssh key, use sshkey to write it If it contains password, use rootpw to set it

root cannot be used with the user command. So only key and password are supported for root.

pylorax.api.compose.write_ks_user(f, user)[source]

Write kickstart user and sshkey entry

Parameters:
  • f (open file object) – kickstart file object
  • user (dict) – A blueprint user dictionary

If the entry contains a ssh key, use sshkey to write it All of the user fields are optional, except name, write out a kickstart user entry with whatever options are relevant.

pylorax.api.config module

class pylorax.api.config.ComposerConfig(*args, **kwargs)[source]

Bases: configparser.SafeConfigParser

get_default(section, option, default)[source]
pylorax.api.config.configure(conf_file='/etc/lorax/composer.conf', root_dir='/', test_config=False)[source]

lorax-composer configuration

Parameters:
  • conf_file (str) – Path to the config file overriding the default settings
  • root_dir (str) – Directory to prepend to paths, defaults to /
  • test_config (bool) – Set to True to skip reading conf_file
pylorax.api.config.make_dnf_dirs(conf)[source]

Make any missing dnf directories

Parameters:conf (ComposerConfig) – The configuration to use
Returns:None
pylorax.api.config.make_queue_dirs(conf, gid)[source]

Make any missing queue directories

Parameters:
  • conf (ComposerConfig) – The configuration to use
  • gid (int) – Group ID that has access to the queue directories
Returns:

list of errors
Return type:

list of str

pylorax.api.crossdomain module

pylorax.api.crossdomain.crossdomain(origin, methods=None, headers=None, max_age=21600, attach_to_all=True, automatic_options=True)[source]

pylorax.api.dnfbase module

pylorax.api.projects module

exception pylorax.api.projects.ProjectsError[source]

Bases: Exception

pylorax.api.projects.api_changelog(changelog)[source]

Convert the changelog to a string

Parameters:changelog (tuple) – A list of time, author, string tuples.
Returns:The most recent changelog text or “”
Return type:str

This returns only the most recent changelog entry.

pylorax.api.projects.api_time(t)[source]

Convert time since epoch to a string

Parameters:t (int) – Seconds since epoch
Returns:Time string
Return type:str
pylorax.api.projects.delete_repo_source(source_glob, source_name)[source]

Delete a source from a repo file

Parameters:source_glob (str) – A glob of the repo sources to search
Returns:None
Raises:ProjectsError if there was a problem

A repo file may have multiple sources in it, delete only the selected source. If it is the last one in the file, delete the file.

WARNING: This will delete ANY source, the caller needs to ensure that a system source_name isn’t passed to it.

pylorax.api.projects.dep_evra(dep)[source]

Return the epoch:version-release.arch for the dep

Parameters:dep (dict) – dependency dict
Returns:epoch:version-release.arch
Return type:str
pylorax.api.projects.dep_nevra(dep)[source]

Return the name-epoch:version-release.arch

pylorax.api.projects.dnf_repo_to_file_repo(repo)[source]

Return a string representation of a DNF Repo object suitable for writing to a .repo file

Parameters:repo (dnf.RepoDict) – DNF Repository
Returns:A string
Return type:str

The DNF Repo.dump() function does not produce a string that can be used as a dnf .repo file, it ouputs baseurl and gpgkey as python lists which DNF cannot read. So do this manually with only the attributes we care about.

pylorax.api.projects.estimate_size(packages, block_size=6144)[source]

Estimate the installed size of a package list

Parameters:
  • packages (list of hawkey.Package objects) – The packages to be installed
  • block_size (int) – The block size to use for rounding up file sizes.
Returns:

The estimated size of installed packages
Return type:

int

Estimating actual requirements is difficult without the actual file sizes, which dnf doesn’t provide access to. So use the file count and block size to estimate a minimum size for each package.

pylorax.api.projects.get_repo_sources(source_glob)[source]

Return a list of sources from a directory of yum repositories

Parameters:source_glob (str) – A glob to use to match the source files, including full path
Returns:A list of the source ids in all of the matching files
Return type:list of str
pylorax.api.projects.get_source_ids(source_path)[source]

Return a list of the source ids in a file

Parameters:source_path (str) – Full path and filename of the source (yum repo) file
Returns:A list of source id strings
Return type:list of str
pylorax.api.projects.modules_info(dbo, module_names)[source]

Return details about a module, including dependencies

Parameters:
  • dbo (dnf.Base) – dnf base object
  • module_names (str) – Names of the modules to get info about
Returns:

List of dicts with module details and dependencies.
Return type:

list of dicts
pylorax.api.projects.modules_list(dbo, module_names)[source]

Return a list of modules

Parameters:
  • dbo (dnf.Base) – dnf base object
  • offset – Number of modules to skip
  • limit (int) – Maximum number of modules to return
Returns:

List of module information and total count
Return type:

tuple of a list of dicts and an Int

Modules don’t exist in RHEL7 so this only returns projects and sets the type to “rpm”

pylorax.api.projects.pkg_to_build(pkg)[source]

Extract the build details from a hawkey.Package object

Parameters:pkg (hawkey.Package) – hawkey.Package object with package details
Returns:A dict with the build details, epoch, release, arch, build_time, changelog, …
Return type:dict

metadata entries are hard-coded to {}

Note that this only returns the build dict, it does not include the name, description, etc.

pylorax.api.projects.pkg_to_dep(pkg)[source]

Extract the info from a hawkey.Package object

Parameters:pkg (hawkey.Package) – A hawkey.Package object
Returns:A dict with name, epoch, version, release, arch
Return type:dict
pylorax.api.projects.pkg_to_project(pkg)[source]

Extract the details from a hawkey.Package object

Parameters:pkgs (hawkey.Package) – hawkey.Package object with package details
Returns:A dict with the name, summary, description, and url.
Return type:dict

upstream_vcs is hard-coded to UPSTREAM_VCS

pylorax.api.projects.pkg_to_project_info(pkg)[source]

Extract the details from a hawkey.Package object

Parameters:pkg (hawkey.Package) – hawkey.Package object with package details
Returns:A dict with the project details, as well as epoch, release, arch, build_time, changelog, …
Return type:dict

metadata entries are hard-coded to {}

pylorax.api.projects.proj_to_module(proj)[source]

Extract the name from a project_info dict

Parameters:pkg (dict) – dict with package details
Returns:A dict with name, and group_type
Return type:dict

group_type is hard-coded to “rpm”

pylorax.api.projects.projects_depsolve(dbo, projects, groups)[source]

Return the dependencies for a list of projects

Parameters:
  • dbo (dnf.Base) – dnf base object
  • projects (List of Strings) – The projects to find the dependencies for
  • groups (List of str) – The groups to include in dependency solving
Returns:

NEVRA’s of the project and its dependencies
Return type:

list of dicts
Raises:

ProjectsError if there was a problem installing something
pylorax.api.projects.projects_depsolve_with_size(dbo, projects, groups, with_core=True)[source]

Return the dependencies and installed size for a list of projects

Parameters:
  • dbo (dnf.Base) – dnf base object
  • project_names (List of Strings) – The projects to find the dependencies for
  • groups (List of str) – The groups to include in dependency solving
Returns:

installed size and a list of NEVRA’s of the project and its dependencies
Return type:

tuple of (int, list of dicts)
Raises:

ProjectsError if there was a problem installing something
pylorax.api.projects.projects_info(dbo, project_names)[source]

Return details about specific projects

Parameters:
  • dbo (dnf.Base) – dnf base object
  • project_names (str) – List of names of projects to get info about
Returns:

List of project info dicts with pkg_to_project as well as epoch, version, release, etc.
Return type:

list of dicts

If project_names is None it will return the full list of available packages

pylorax.api.projects.projects_list(dbo)[source]

Return a list of projects

Parameters:dbo (dnf.Base) – dnf base object
Returns:List of project info dicts with name, summary, description, homepage, upstream_vcs
Return type:list of dicts
pylorax.api.projects.repo_to_source(repo, system_source)[source]

Return a Weldr Source dict created from the DNF Repository

Parameters:
  • repo (dnf.RepoDict) – DNF Repository
  • system_source (bool) – True if this source is an immutable system source
Returns:

A dict with Weldr Source fields filled in
Return type:

dict

Example:

{
  "check_gpg": true,
  "check_ssl": true,
  "gpgkey_url": [
    "file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-28-x86_64"
  ],
  "name": "fedora",
  "proxy": "http://proxy.brianlane.com:8123",
  "system": true
  "type": "yum-metalink",
  "url": "https://mirrors.fedoraproject.org/metalink?repo=fedora-28&arch=x86_64"
}
pylorax.api.projects.source_to_repo(source, dnf_conf)[source]

Return a dnf Repo object created from a source dict

Parameters:source (dict) – A Weldr source dict
Returns:A dnf Repo object
Return type:dnf.Repo

Example:

{
  "check_gpg": True,
  "check_ssl": True,
  "gpgkey_urls": [
    "file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-28-x86_64"
  ],
  "name": "fedora",
  "proxy": "http://proxy.brianlane.com:8123",
  "system": True
  "type": "yum-metalink",
  "url": "https://mirrors.fedoraproject.org/metalink?repo=fedora-28&arch=x86_64"
}

pylorax.api.queue module

Functions to monitor compose queue and run anaconda

pylorax.api.queue.build_status(cfg, status_filter=None)[source]

Return the details of finished or failed builds

Parameters:
  • cfg (ComposerConfig) – Configuration settings
  • status_filter (str) – What builds to return. None == all, “FINISHED”, or “FAILED”
Returns:

A list of the build details (from compose_details)
Return type:

list of dicts

This returns a list of build details for each of the matching builds on the system. It does not return the status of builds that have not been finished. Use queue_status() for those.

pylorax.api.queue.check_queues(cfg)[source]

Check to make sure the new and run queue symlinks are correct

Parameters:cfg (DataHolder) – Configuration settings

Also check all of the existing results and make sure any with WAITING set in STATUS have a symlink in queue/new/

pylorax.api.queue.compose_detail(results_dir)[source]

Return details about the build.

Parameters:results_dir (str) – The directory containing the metadata and results for the build
Returns:A dictionary with details about the compose
Return type:dict
Raises:IOError if it cannot read the directory, STATUS, or blueprint file.

The following details are included in the dict:

  • id - The uuid of the comoposition
  • queue_status - The final status of the composition (FINISHED or FAILED)
  • compose_type - The type of output generated (tar, iso, etc.)
  • blueprint - Blueprint name
  • version - Blueprint version
  • image_size - Size of the image, if finished. 0 otherwise.

Various timestamps are also included in the dict. These are all Unix UTC timestamps. It is possible for these timestamps to not always exist, in which case they will be None in Python (or null in JSON). The following timestamps are included:

  • job_created - When the user submitted the compose
  • job_started - Anaconda started running
  • job_finished - Job entered FINISHED or FAILED state
pylorax.api.queue.get_compose_type(results_dir)[source]

Return the type of composition.

Parameters:results_dir (str) – The directory containing the metadata and results for the build
Returns:The type of compose (eg. ‘tar’)
Return type:str
Raises:RuntimeError if no kickstart template can be found.
pylorax.api.queue.get_image_name(uuid_dir)[source]

Return the filename and full path of the build’s image file

Parameters:uuid (str) – The UUID of the build
Returns:The image filename and full path
Return type:tuple of strings
Raises:RuntimeError if there was a problem (eg. invalid uuid, missing config file)
pylorax.api.queue.make_compose(cfg, results_dir)[source]

Run anaconda with the final-kickstart.ks from results_dir

Parameters:
  • cfg (DataHolder) – Configuration settings
  • results_dir (str) – The directory containing the metadata and results for the build
Returns:

Nothing
Raises:

May raise various exceptions

This takes the final-kickstart.ks, and the settings in config.toml and runs Anaconda in no-virt mode (directly on the host operating system). Exceptions should be caught at the higer level.

If there is a failure, the build artifacts will be cleaned up, and any logs will be moved into logs/anaconda/ and their ownership will be set to the user from the cfg object.

pylorax.api.queue.monitor(cfg)[source]

Monitor the queue for new compose requests

Parameters:cfg (DataHolder) – Configuration settings
Returns:Does not return

The queue has 2 subdirectories, new and run. When a compose is ready to be run a symlink to the uniquely named results directory should be placed in ./queue/new/

When the it is ready to be run (it is checked every 30 seconds or after a previous compose is finished) the symlink will be moved into ./queue/run/ and a STATUS file will be created in the results directory.

STATUS can contain one of: WAITING, RUNNING, FINISHED, FAILED

If the system is restarted while a compose is running it will move any old symlinks from ./queue/run/ to ./queue/new/ and rerun them.

pylorax.api.queue.queue_status(cfg)[source]

Return details about what is in the queue.

Parameters:cfg (ComposerConfig) – Configuration settings
Returns:A list of the new composes, and a list of the running composes
Return type:dict

This returns a dict with 2 lists. “new” is the list of uuids that are waiting to be built, and “run” has the uuids that are being built (currently limited to 1 at a time).

pylorax.api.queue.start_queue_monitor(cfg, uid, gid)[source]

Start the queue monitor as a mp process

Parameters:
  • cfg (ComposerConfig) – Configuration settings
  • uid (int) – User ID that owns the queue
  • gid (int) – Group ID that owns the queue
Returns:

None
pylorax.api.queue.uuid_cancel(cfg, uuid)[source]

Cancel a build and delete its results

Parameters:
  • cfg (ComposerConfig) – Configuration settings
  • uuid (str) – The UUID of the build
Returns:

True if it was canceled and deleted
Return type:

bool

Only call this if the build status is WAITING or RUNNING

pylorax.api.queue.uuid_delete(cfg, uuid)[source]

Delete all of the results from a compose

Parameters:
  • cfg (ComposerConfig) – Configuration settings
  • uuid (str) – The UUID of the build
Returns:

True if it was deleted
Return type:

bool
Raises:

This will raise an error if the delete failed
pylorax.api.queue.uuid_image(cfg, uuid)[source]

Return the filename and full path of the build’s image file

Parameters:
  • cfg (ComposerConfig) – Configuration settings
  • uuid (str) – The UUID of the build
Returns:

The image filename and full path
Return type:

tuple of strings
Raises:

RuntimeError if there was a problem (eg. invalid uuid, missing config file)
pylorax.api.queue.uuid_info(cfg, uuid)[source]

Return information about the composition

Parameters:
  • cfg (ComposerConfig) – Configuration settings
  • uuid (str) – The UUID of the build
Returns:

dictionary of information about the composition or None
Return type:

dict
Raises:

RuntimeError if there was a problem

This will return a dict with the following fields populated:

  • id - The uuid of the comoposition
  • config - containing the configuration settings used to run Anaconda
  • blueprint - The depsolved blueprint used to generate the kickstart
  • commit - The (local) git commit hash for the blueprint used
  • deps - The NEVRA of all of the dependencies used in the composition
  • compose_type - The type of output generated (tar, iso, etc.)
  • queue_status - The final status of the composition (FINISHED or FAILED)
pylorax.api.queue.uuid_log(cfg, uuid, size=1024)[source]

Return size kbytes from the end of the anaconda.log

Parameters:
  • cfg (ComposerConfig) – Configuration settings
  • uuid (str) – The UUID of the build
  • size (int) – Number of kbytes to read. Default is 1024
Returns:

Up to size kbytes from the end of the log
Return type:

str
Raises:

RuntimeError if there was a problem (eg. no log file available)

This function tries to return lines from the end of the log, it will attempt to start on a line boundry, and may return less than size kbytes.

pylorax.api.queue.uuid_status(cfg, uuid)[source]

Return the details of a specific UUID compose

Parameters:
  • cfg (ComposerConfig) – Configuration settings
  • uuid (str) – The UUID of the build
Returns:

Details about the build
Return type:

dict or None

Returns the same dict as compose_details()

pylorax.api.queue.uuid_tar(cfg, uuid, metadata=False, image=False, logs=False)[source]

Return a tar of the build data

Parameters:
  • cfg (ComposerConfig) – Configuration settings
  • uuid (str) – The UUID of the build
  • metadata (bool) – Set to true to include all the metadata needed to reproduce the build
  • image (bool) – Set to true to include the output image
  • logs (bool) – Set to true to include the logs from the build
Returns:

A stream of bytes from tar
Return type:

A generator
Raises:

RuntimeError if there was a problem (eg. missing config file)

This yields an uncompressed tar’s data to the caller. It includes the selected data to the caller by returning the Popen stdout from the tar process.

pylorax.api.recipes module

class pylorax.api.recipes.CommitDetails(commit, timestamp, message, revision=None)[source]

Bases: pylorax.base.DataHolder

exception pylorax.api.recipes.CommitTimeValError[source]

Bases: Exception

pylorax.api.recipes.NewRecipeGit(toml_dict)[source]

Create a RecipeGit object from fields in a TOML dict

Parameters:
  • rpmname (str) – Name of the rpm to create, also used as the prefix name in the tar archive
  • rpmversion (str) – Version of the rpm, eg. “1.0.0”
  • rpmrelease (str) – Release of the rpm, eg. “1”
  • summary (str) – Summary string for the rpm
  • repo (str) – URL of the get repo to clone and create the archive from
  • ref (str) – Git reference to check out. eg. origin/branch-name, git tag, or git commit hash
  • destination (str) – Path to install the / of the git repo at when installing the rpm
Returns:

A populated RecipeGit object
Return type:

RecipeGit

The TOML should look like this:

[[repos.git]]
rpmname="server-config"
rpmversion="1.0"
rpmrelease="1"
summary="Setup files for server deployment"
repo="PATH OF GIT REPO TO CLONE"
ref="v1.0"
destination="/opt/server/"

Note that the repo path supports anything that git supports, file://, https://, http://

Currently there is no support for authentication

class pylorax.api.recipes.Recipe(name, description, version, modules, packages, groups, customizations=None, gitrepos=None)[source]

Bases: dict

A Recipe of package and modules

This is a subclass of dict that enforces the constructor arguments and adds a .filename property to return the recipe’s filename, and a .toml() function to return the recipe as a TOML string.

bump_version(old_version=None)[source]

semver recipe version number bump

Parameters:old_version (str) – An optional old version number
Returns:The new version number or None
Return type:str
Raises:ValueError

If neither have a version, 0.0.1 is returned If there is no old version the new version is checked and returned If there is no new version, but there is a old one, bump its patch level If the old and new versions are the same, bump the patch level If they are different, check and return the new version

filename

Return the Recipe’s filename

Replaces spaces in the name with ‘-‘ and appends .toml

freeze(deps)[source]

Return a new Recipe with full module and package NEVRA

Parameters:deps (list() – A list of dependency NEVRA to use to fill in the modules and packages
Returns:A new Recipe object
Return type:Recipe
group_names

Return the names of the groups. Groups do not have versions.

module_names

Return the names of the modules

module_nver

Return the names and version globs of the modules

package_names

Return the names of the packages

package_nver

Return the names and version globs of the packages

toml()[source]

Return the Recipe in TOML format

exception pylorax.api.recipes.RecipeError[source]

Bases: Exception

exception pylorax.api.recipes.RecipeFileError[source]

Bases: Exception

class pylorax.api.recipes.RecipeGit(rpmname, rpmversion, rpmrelease, summary, repo, ref, destination)[source]

Bases: dict

class pylorax.api.recipes.RecipeGroup(name)[source]

Bases: dict

class pylorax.api.recipes.RecipeModule(name, version)[source]

Bases: dict

class pylorax.api.recipes.RecipePackage(name, version)[source]

Bases: pylorax.api.recipes.RecipeModule

pylorax.api.recipes.commit_recipe(repo, branch, recipe)[source]

Commit a recipe to a branch

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • recipe (Recipe) – Recipe to commit
Returns:

OId of the new commit
Return type:

Git.OId
Raises:

Can raise errors from Ggit
pylorax.api.recipes.commit_recipe_directory(repo, branch, directory)[source]

Commit all *.toml files from a directory, if they aren’t already in git.

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • directory (str) – The directory of *.toml recipes to commit
Returns:

None
Raises:

Can raise errors from Ggit or RecipeFileError

Files with Toml or RecipeFileErrors will be skipped, and the remainder will be tried.

pylorax.api.recipes.commit_recipe_file(repo, branch, filename)[source]

Commit a recipe file to a branch

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • filename (str) – Path to the recipe file to commit
Returns:

OId of the new commit
Return type:

Git.OId
Raises:

Can raise errors from Ggit or RecipeFileError
pylorax.api.recipes.customizations_diff(old_recipe, new_recipe)[source]

Diff the customizations sections from two versions of a recipe

pylorax.api.recipes.delete_file(repo, branch, filename)[source]

Delete a file from a branch.

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • filename (str) – filename to delete
Returns:

OId of the new commit
Return type:

Git.OId
Raises:

Can raise errors from Ggit
pylorax.api.recipes.delete_recipe(repo, branch, recipe_name)[source]

Delete a recipe from a branch.

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • recipe_name (str) – Recipe name to delete
Returns:

OId of the new commit
Return type:

Git.OId
Raises:

Can raise errors from Ggit
pylorax.api.recipes.diff_lists(title, field, old_items, new_items)[source]

Return the differences between two lists of dicts.

Parameters:
  • title (str) – Title of the entry
  • field (str) – Field to use as the key for comparisons
  • old_items (list(dict)) – List of item dicts with “name” field
  • new_items (list(dict)) – List of item dicts with “name” field
Returns:

List of diff dicts with old/new entries
Return type:

list(dict)
pylorax.api.recipes.find_commit_tag(repo, branch, filename, commit_id)[source]

Find the tag that matches the commit_id

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • filename (str) – filename to revert
  • commit_id (Git.OId) – The commit id to check
Returns:

The tag or None if there isn’t one
Return type:

str or None

There should be only 1 tag pointing to a commit, but there may not be a tag at all.

The tag will look like: ‘refs/tags/<branch>/<filename>/r<revision>’

pylorax.api.recipes.find_field_value(field, value, lst)[source]

Find a field matching value in the list of dicts.

Parameters:
  • field (str) – field to search for
  • value (str) – value to match in the field
  • lst (list of dict) – List of dict’s with field
Returns:

First dict with matching field:value, or None
Return type:

dict or None

Used to return a specific entry from a list that looks like this:

[{“name”: “one”, “attr”: “green”}, …]

find_field_value(“name”, “one”, lst) will return the matching dict.

pylorax.api.recipes.find_name(name, lst)[source]

Find the dict matching the name in a list and return it.

Parameters:
  • name (str) – Name to search for
  • lst (list of dict) – List of dict’s with “name” field
Returns:

First dict with matching name, or None
Return type:

dict or None

This is just a wrapper for find_field_value with field set to “name”

pylorax.api.recipes.find_recipe_obj(path, recipe, default=None)[source]

Find a recipe object

Parameters:
  • path (list of str) – A list of dict field names
  • recipe (Recipe) – The recipe to search
  • default (Any) – The value to return if it is not found

Return the object found by applying the path to the dicts in the recipe, or return the default if it doesn’t exist.

eg. {“customizations”: {“hostname”: “foo”, “users”: […]}}

find_recipe_obj([“customizations”, “hostname”], recipe, “”)

pylorax.api.recipes.get_commit_details(commit, revision=None)[source]

Return the details about a specific commit.

Parameters:
  • commit (Git.Commit) – The commit to get details from
  • revision (int) – Optional commit revision
Returns:

Details about the commit
Return type:

CommitDetails
Raises:

CommitTimeValError or Ggit exceptions
pylorax.api.recipes.get_revision_from_tag(tag)[source]

Return the revision number from a tag

Parameters:tag (str) – The tag to exract the revision from
Returns:The integer revision or None
Return type:int or None

The revision is the part after the r in ‘branch/filename/rXXX’

pylorax.api.recipes.gfile(path)[source]

Convert a string path to GFile for use with Git

pylorax.api.recipes.head_commit(repo, branch)[source]

Get the branch’s HEAD Commit Object

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
Returns:

Branch’s head commit
Return type:

Git.Commit
Raises:

Can raise errors from Ggit
pylorax.api.recipes.is_commit_tag(repo, commit_id, tag)[source]

Check to see if a tag points to a specific commit.

Parameters:
  • repo (Git.Repository) – Open repository
  • commit_id (Git.OId) – The commit id to check
  • tag (str) – The tag to check
Returns:

True if the tag points to the commit, False otherwise
Return type:

bool
pylorax.api.recipes.is_parent_diff(repo, filename, tree, parent)[source]

Check to see if the commit is different from its parents

Parameters:
  • repo (Git.Repository) – Open repository
  • filename (str) – filename to revert
  • tree (Git.Tree) – The commit’s tree
  • parent (Git.Commit) – The commit’s parent commit
Retuns:

True if filename in the commit is different from its parents
Return type:

bool
pylorax.api.recipes.list_branch_files(repo, branch)[source]

Return a sorted list of the files on the branch HEAD

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
Returns:

A sorted list of the filenames
Return type:

list(str)
Raises:

Can raise errors from Ggit
pylorax.api.recipes.list_commit_files(repo, commit)[source]

Return a sorted list of the files on a commit

Parameters:
  • repo (Git.Repository) – Open repository
  • commit (str) – The commit hash to list
Returns:

A sorted list of the filenames
Return type:

list(str)
Raises:

Can raise errors from Ggit
pylorax.api.recipes.list_commits(repo, branch, filename, limit=0)[source]

List the commit history of a file on a branch.

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • filename (str) – filename to revert
  • limit (int) – Number of commits to return (0=all)
Returns:

A list of commit details
Return type:

list(CommitDetails)
Raises:

Can raise errors from Ggit
pylorax.api.recipes.open_or_create_repo(path)[source]

Open an existing repo, or create a new one

Parameters:path (string) – path to recipe directory
Returns:A repository object
Return type:Git.Repository
Raises:Can raise errors from Ggit

A bare git repo will be created in the git directory of the specified path. If a repo already exists it will be opened and returned instead of creating a new one.

pylorax.api.recipes.prepare_commit(repo, branch, builder)[source]

Prepare for a commit

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • builder (TreeBuilder) – instance of TreeBuilder
Returns:

(Tree, Sig, Ref)
Return type:

tuple
Raises:

Can raise errors from Ggit
pylorax.api.recipes.read_commit(repo, branch, filename, commit=None)[source]

Return the contents of a file on a specific branch or commit.

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • filename (str) – filename to read
  • commit (str) – Optional commit hash
Returns:

The commit id, and the contents of the commit
Return type:

tuple(str, str)
Raises:

Can raise errors from Ggit

If no commit is passed the master:filename is returned, otherwise it will be commit:filename

pylorax.api.recipes.read_commit_spec(repo, spec)[source]

Return the raw content of the blob specified by the spec

Parameters:
  • repo (Git.Repository) – Open repository
  • spec (str) – Git revparse spec
Returns:

Contents of the commit
Return type:

str
Raises:

Can raise errors from Ggit

eg. To read the README file from master the spec is “master:README”

pylorax.api.recipes.read_recipe_and_id(repo, branch, recipe_name, commit=None)[source]

Read a recipe commit and its id from git

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • recipe_name (str) – Recipe name to read
  • commit (str) – Optional commit hash
Returns:

The commit id, and a Recipe object
Return type:

tuple(str, Recipe)
Raises:

Can raise errors from Ggit

If no commit is passed the master:filename is returned, otherwise it will be commit:filename

pylorax.api.recipes.read_recipe_commit(repo, branch, recipe_name, commit=None)[source]

Read a recipe commit from git and return a Recipe object

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • recipe_name (str) – Recipe name to read
  • commit (str) – Optional commit hash
Returns:

A Recipe object
Return type:

Recipe
Raises:

Can raise errors from Ggit

If no commit is passed the master:filename is returned, otherwise it will be commit:filename

pylorax.api.recipes.recipe_diff(old_recipe, new_recipe)[source]

Diff two versions of a recipe

Parameters:
  • old_recipe (Recipe) – The old version of the recipe
  • new_recipe (Recipe) – The new version of the recipe
Returns:

A list of diff dict entries with old/new
Return type:

list(dict)
pylorax.api.recipes.recipe_filename(name)[source]

Return the toml filename for a recipe

Replaces spaces with ‘-‘ and appends ‘.toml’

pylorax.api.recipes.recipe_from_dict(recipe_dict)[source]

Create a Recipe object from a plain dict.

Parameters:recipe_dict (dict) – A plain dict of the recipe
Returns:A Recipe object
Return type:Recipe
Raises:RecipeError
pylorax.api.recipes.recipe_from_file(recipe_path)[source]

Return a recipe file as a Recipe object

Parameters:recipe_path (str) – Path to the recipe fila
Returns:A Recipe object
Return type:Recipe
pylorax.api.recipes.recipe_from_toml(recipe_str)[source]

Create a Recipe object from a toml string.

Parameters:recipe_str (str) – The Recipe TOML string
Returns:A Recipe object
Return type:Recipe
Raises:TomlError
pylorax.api.recipes.repo_file_exists(repo, branch, filename)[source]

Return True if the filename exists on the branch

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • filename (str) – Filename to check
Returns:

True if the filename exists on the HEAD of the branch, False otherwise.
Return type:

bool
pylorax.api.recipes.revert_file(repo, branch, filename, commit)[source]

Revert the contents of a file to that of a previous commit

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • filename (str) – filename to revert
  • commit (str) – Commit hash
Returns:

OId of the new commit
Return type:

Git.OId
Raises:

Can raise errors from Ggit
pylorax.api.recipes.revert_recipe(repo, branch, recipe_name, commit)[source]

Revert the contents of a recipe to that of a previous commit

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • recipe_name (str) – Recipe name to revert
  • commit (str) – Commit hash
Returns:

OId of the new commit
Return type:

Git.OId
Raises:

Can raise errors from Ggit
pylorax.api.recipes.tag_file_commit(repo, branch, filename)[source]

Tag a file’s most recent commit

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • filename (str) – Filename to tag
Returns:

Tag id or None if it failed.
Return type:

Git.OId
Raises:

Can raise errors from Ggit

This uses git tags, of the form refs/tags/<branch>/<filename>/r<revision> Only the most recent recipe commit can be tagged to prevent out of order tagging. Revisions start at 1 and increment for each new commit that is tagged. If the commit has already been tagged it will return false.

pylorax.api.recipes.tag_recipe_commit(repo, branch, recipe_name)[source]

Tag a file’s most recent commit

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • recipe_name (str) – Recipe name to tag
Returns:

Tag id or None if it failed.
Return type:

Git.OId
Raises:

Can raise errors from Ggit

Uses tag_file_commit()

pylorax.api.recipes.write_commit(repo, branch, filename, message, content)[source]

Make a new commit to a repository’s branch

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • filename (str) – full path of the file to add
  • message (str) – The commit message
  • content (str) – The data to write
Returns:

OId of the new commit
Return type:

Git.OId
Raises:

Can raise errors from Ggit

pylorax.api.server module

class pylorax.api.server.GitLock(repo, lock, dir)

Bases: tuple

dir

Alias for field number 2

lock

Alias for field number 1

repo

Alias for field number 0

pylorax.api.v0 module

Setup v0 of the API server

v0_api() must be called to setup the API routes for Flask

Status Responses

Some requests only return a status/error response.

The response will be a status response with status set to true, or an error response with it set to false and an error message included.

Example response:

{
  "status": true
}

Error response:

{
  "errors": ["ggit-error: Failed to remove entry. File isn't in the tree - jboss.toml (-1)"]
  "status": false
}

API Routes

All of the blueprints routes support the optional branch argument. If it is not used then the API will use the master branch for blueprints. If you want to create a new branch use the new or workspace routes with ?branch=<branch-name> to store the new blueprint on the new branch.

/api/v0/blueprints/list

List the available blueprints:

{ "limit": 20,
  "offset": 0,
  "blueprints": [
    "atlas",
    "development",
    "glusterfs",
    "http-server",
    "jboss",
    "kubernetes" ],
  "total": 6 }

/api/v0/blueprints/info/<blueprint_names>[?format=<json|toml>]

Return the JSON representation of the blueprint. This includes 3 top level objects. changes which lists whether or not the workspace is different from the most recent commit. blueprints which lists the JSON representation of the blueprint, and errors which will list any errors, like non-existant blueprints.

By default the response is JSON, but if ?format=toml is included in the URL’s arguments it will return the response as the blueprint’s raw TOML content. Unless there is an error which will only return a 400 and a standard error `Status Response`_.

If there is an error when JSON is requested the successful blueprints and the errors will both be returned.

Example of json response:

{
  "changes": [
    {
      "changed": false,
      "name": "glusterfs"
    }
  ],
  "errors": [],
  "blueprints": [
    {
      "description": "An example GlusterFS server with samba",
      "modules": [
        {
          "name": "glusterfs",
          "version": "3.7.*"
        },
        {
          "name": "glusterfs-cli",
          "version": "3.7.*"
        }
      ],
      "name": "glusterfs",
      "packages": [
        {
          "name": "2ping",
          "version": "3.2.1"
        },
        {
          "name": "samba",
          "version": "4.2.*"
        }
      ],
      "version": "0.0.6"
    }
  ]
}

Error example:

{
  "changes": [],
  "errors": ["ggit-error: the path 'missing.toml' does not exist in the given tree (-3)"]
  "blueprints": []
}

/api/v0/blueprints/changes/<blueprint_names>[?offset=0&limit=20]

Return the commits to a blueprint. By default it returns the first 20 commits, this can be changed by passing offset and/or limit. The response will include the commit hash, summary, timestamp, and optionally the revision number. The commit hash can be passed to /api/v0/blueprints/diff/ to retrieve the exact changes.

Example:

{
  "errors": [],
  "limit": 20,
  "offset": 0,
  "blueprints": [
    {
      "changes": [
        {
          "commit": "e083921a7ed1cf2eec91ad12b9ad1e70ef3470be",
          "message": "blueprint glusterfs, version 0.0.6 saved.",
          "revision": null,
          "timestamp": "2017-11-23T00:18:13Z"
        },
        {
          "commit": "cee5f4c20fc33ea4d54bfecf56f4ad41ad15f4f3",
          "message": "blueprint glusterfs, version 0.0.5 saved.",
          "revision": null,
          "timestamp": "2017-11-11T01:00:28Z"
        },
        {
          "commit": "29b492f26ed35d80800b536623bafc51e2f0eff2",
          "message": "blueprint glusterfs, version 0.0.4 saved.",
          "revision": null,
          "timestamp": "2017-11-11T00:28:30Z"
        },
        {
          "commit": "03374adbf080fe34f5c6c29f2e49cc2b86958bf2",
          "message": "blueprint glusterfs, version 0.0.3 saved.",
          "revision": null,
          "timestamp": "2017-11-10T23:15:52Z"
        },
        {
          "commit": "0e08ecbb708675bfabc82952599a1712a843779d",
          "message": "blueprint glusterfs, version 0.0.2 saved.",
          "revision": null,
          "timestamp": "2017-11-10T23:14:56Z"
        },
        {
          "commit": "3e11eb87a63d289662cba4b1804a0947a6843379",
          "message": "blueprint glusterfs, version 0.0.1 saved.",
          "revision": null,
          "timestamp": "2017-11-08T00:02:47Z"
        }
      ],
      "name": "glusterfs",
      "total": 6
    }
  ]
}

POST /api/v0/blueprints/new

Create a new blueprint, or update an existing blueprint. This supports both JSON and TOML for the blueprint format. The blueprint should be in the body of the request with the Content-Type header set to either application/json or text/x-toml.

The response will be a status response with status set to true, or an error response with it set to false and an error message included.

DELETE /api/v0/blueprints/delete/<blueprint_name>

Delete a blueprint. The blueprint is deleted from the branch, and will no longer be listed by the list route. A blueprint can be undeleted using the undo route to revert to a previous commit. This will also delete the workspace copy of the blueprint.

The response will be a status response with status set to true, or an error response with it set to false and an error message included.

POST /api/v0/blueprints/workspace

Write a blueprint to the temporary workspace. This works exactly the same as new except that it does not create a commit. JSON and TOML bodies are supported.

The workspace is meant to be used as a temporary blueprint storage for clients. It will be read by the info and diff routes if it is different from the most recent commit.

The response will be a status response with status set to true, or an error response with it set to false and an error message included.

DELETE /api/v0/blueprints/workspace/<blueprint_name>

Remove the temporary workspace copy of a blueprint. The info route will now return the most recent commit of the blueprint. Any changes that were in the workspace will be lost.

The response will be a status response with status set to true, or an error response with it set to false and an error message included.

POST /api/v0/blueprints/undo/<blueprint_name>/<commit>

This will revert the blueprint to a previous commit. The commit hash from the changes route can be used in this request.

The response will be a status response with status set to true, or an error response with it set to false and an error message included.

POST /api/v0/blueprints/tag/<blueprint_name>

Tag a blueprint as a new release. This uses git tags with a special format. refs/tags/<branch>/<filename>/r<revision>. Only the most recent blueprint commit can be tagged. Revisions start at 1 and increment for each new tag (per-blueprint). If the commit has already been tagged it will return false.

The response will be a status response with status set to true, or an error response with it set to false and an error message included.

/api/v0/blueprints/diff/<blueprint_name>/<from_commit>/<to_commit>

Return the differences between two commits, or the workspace. The commit hash from the changes response can be used here, or several special strings:

  • NEWEST will select the newest git commit. This works for from_commit or to_commit
  • WORKSPACE will select the workspace copy. This can only be used in to_commit

eg. /api/v0/blueprints/diff/glusterfs/NEWEST/WORKSPACE will return the differences between the most recent git commit and the contents of the workspace.

Each entry in the response’s diff object contains the old blueprint value and the new one. If old is null and new is set, then it was added. If new is null and old is set, then it was removed. If both are set, then it was changed.

The old/new entries will have the name of the blueprint field that was changed. This can be one of: Name, Description, Version, Module, or Package. The contents for these will be the old/new values for them.

In the example below the version was changed and the ping package was added.

Example:

{
  "diff": [
    {
      "new": {
        "Version": "0.0.6"
      },
      "old": {
        "Version": "0.0.5"
      }
    },
    {
      "new": {
        "Package": {
          "name": "ping",
          "version": "3.2.1"
        }
      },
      "old": null
    }
  ]
}

/api/v0/blueprints/freeze/<blueprint_names>

Return a JSON representation of the blueprint with the package and module versions set to the exact versions chosen by depsolving the blueprint.

Example:

{
  "errors": [],
  "blueprints": [
    {
      "blueprint": {
        "description": "An example GlusterFS server with samba",
        "modules": [
          {
            "name": "glusterfs",
            "version": "3.8.4-18.4.el7.x86_64"
          },
          {
            "name": "glusterfs-cli",
            "version": "3.8.4-18.4.el7.x86_64"
          }
        ],
        "name": "glusterfs",
        "packages": [
          {
            "name": "ping",
            "version": "2:3.2.1-2.el7.noarch"
          },
          {
            "name": "samba",
            "version": "4.6.2-8.el7.x86_64"
          }
        ],
        "version": "0.0.6"
      }
    }
  ]
}

/api/v0/blueprints/depsolve/<blueprint_names>

Depsolve the blueprint using yum, return the blueprint used, and the NEVRAs of the packages chosen to satisfy the blueprint’s requirements. The response will include a list of results, with the full dependency list in dependencies, the NEVRAs for the blueprint’s direct modules and packages in modules, and any error will be in errors.

Example:

{
  "errors": [],
  "blueprints": [
    {
      "dependencies": [
        {
          "arch": "noarch",
          "epoch": "0",
          "name": "2ping",
          "release": "2.el7",
          "version": "3.2.1"
        },
        {
          "arch": "x86_64",
          "epoch": "0",
          "name": "acl",
          "release": "12.el7",
          "version": "2.2.51"
        },
        {
          "arch": "x86_64",
          "epoch": "0",
          "name": "audit-libs",
          "release": "3.el7",
          "version": "2.7.6"
        },
        {
          "arch": "x86_64",
          "epoch": "0",
          "name": "avahi-libs",
          "release": "17.el7",
          "version": "0.6.31"
        },
        ...
      ],
      "modules": [
        {
          "arch": "noarch",
          "epoch": "0",
          "name": "2ping",
          "release": "2.el7",
          "version": "3.2.1"
        },
        {
          "arch": "x86_64",
          "epoch": "0",
          "name": "glusterfs",
          "release": "18.4.el7",
          "version": "3.8.4"
        },
        ...
      ],
      "blueprint": {
        "description": "An example GlusterFS server with samba",
        "modules": [
          {
            "name": "glusterfs",
            "version": "3.7.*"
          },
       ...
      }
    }
  ]
}

/api/v0/projects/list[?offset=0&limit=20]

List all of the available projects. By default this returns the first 20 items, but this can be changed by setting the offset and limit arguments.

Example:

{
  "limit": 20,
  "offset": 0,
  "projects": [
    {
      "description": "0 A.D. (pronounced "zero ey-dee") is a ...",
      "homepage": "http://play0ad.com",
      "name": "0ad",
      "summary": "Cross-Platform RTS Game of Ancient Warfare",
      "upstream_vcs": "UPSTREAM_VCS"
    },
    ...
  ],
  "total": 21770
}

/api/v0/projects/info/<project_names>

Return information about the comma-separated list of projects. It includes the description of the package along with the list of available builds.

Example:

{
  "projects": [
    {
      "builds": [
        {
          "arch": "x86_64",
          "build_config_ref": "BUILD_CONFIG_REF",
          "build_env_ref": "BUILD_ENV_REF",
          "build_time": "2017-03-01T08:39:23",
          "changelog": "- restore incremental backups correctly, files ...",
          "epoch": "2",
          "metadata": {},
          "release": "32.el7",
          "source": {
            "license": "GPLv3+",
            "metadata": {},
            "source_ref": "SOURCE_REF",
            "version": "1.26"
          }
        }
      ],
      "description": "The GNU tar program saves many ...",
      "homepage": "http://www.gnu.org/software/tar/",
      "name": "tar",
      "summary": "A GNU file archiving program",
      "upstream_vcs": "UPSTREAM_VCS"
    }
  ]
}

/api/v0/projects/depsolve/<project_names>

Depsolve the comma-separated list of projects and return the list of NEVRAs needed to satisfy the request.

Example:

{
  "projects": [
    {
      "arch": "noarch",
      "epoch": "0",
      "name": "basesystem",
      "release": "7.el7",
      "version": "10.0"
    },
    {
      "arch": "x86_64",
      "epoch": "0",
      "name": "bash",
      "release": "28.el7",
      "version": "4.2.46"
    },
    {
      "arch": "x86_64",
      "epoch": "0",
      "name": "filesystem",
      "release": "21.el7",
      "version": "3.2"
    },
    ...
  ]
}

/api/v0/projects/source/list

Return the list of repositories used for depsolving and installing packages.

Example:

{
  "sources": [
    "fedora",
    "fedora-cisco-openh264",
    "fedora-updates-testing",
    "fedora-updates"
  ]
}

/api/v0/projects/source/info/<source-names>

Return information about the comma-separated list of source names. Or all of the sources if ‘*’ is passed. Note that general globbing is not supported, only ‘*’.

immutable system sources will have the “system” field set to true. User added sources will have it set to false. System sources cannot be changed or deleted.

Example:

{
  "errors": [],
  "sources": {
    "fedora": {
      "check_gpg": true,
      "check_ssl": true,
      "gpgkey_urls": [
        "file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-28-x86_64"
      ],
      "name": "fedora",
      "proxy": "http://proxy.brianlane.com:8123",
      "system": true,
      "type": "yum-metalink",
      "url": "https://mirrors.fedoraproject.org/metalink?repo=fedora-28&arch=x86_64"
    }
  }
}

POST /api/v0/projects/source/new

Add (or change) a source for use when depsolving blueprints and composing images.

The proxy and gpgkey_urls entries are optional. All of the others are required. The supported types for the urls are:

  • yum-baseurl is a URL to a yum repository.
  • yum-mirrorlist is a URL for a mirrorlist.
  • yum-metalink is a URL for a metalink.

If check_ssl is true the https certificates must be valid. If they are self-signed you can either set this to false, or add your Certificate Authority to the host system.

If check_gpg is true the GPG key must either be installed on the host system, or gpgkey_urls should point to it.

You can edit an existing source (other than system sources), by doing a POST of the new version of the source. It will overwrite the previous one.

Example:

{
    "name": "custom-source-1",
    "url": "https://url/path/to/repository/",
    "type": "yum-baseurl",
    "check_ssl": true,
    "check_gpg": true,
    "gpgkey_urls": [
        "https://url/path/to/gpg-key"
    ]
}

DELETE /api/v0/projects/source/delete/<source-name>

Delete a user added source. This will fail if a system source is passed to it.

The response will be a status response with status set to true, or an error response with it set to false and an error message included.

/api/v0/modules/list[?offset=0&limit=20]

Return a list of all of the available modules. This includes the name and the group_type, which is always “rpm” for lorax-composer. By default this returns the first 20 items. This can be changed by setting the offset and limit arguments.

Example:

{
  "limit": 20,
  "modules": [
    {
      "group_type": "rpm",
      "name": "0ad"
    },
    {
      "group_type": "rpm",
      "name": "0ad-data"
    },
    {
      "group_type": "rpm",
      "name": "0install"
    },
    {
      "group_type": "rpm",
      "name": "2048-cli"
    },
    ...
  ]
  "total": 21770
}

/api/v0/modules/list/<module_names>[?offset=0&limit=20]

Return the list of comma-separated modules. Output is the same as /modules/list

Example:

{
  "limit": 20,
  "modules": [
    {
      "group_type": "rpm",
      "name": "tar"
    }
  ],
  "offset": 0,
  "total": 1
}

/api/v0/modules/info/<module_names>

Return the module’s dependencies, and the information about the module.

Example:

{
  "modules": [
    {
      "dependencies": [
        {
          "arch": "noarch",
          "epoch": "0",
          "name": "basesystem",
          "release": "7.el7",
          "version": "10.0"
        },
        {
          "arch": "x86_64",
          "epoch": "0",
          "name": "bash",
          "release": "28.el7",
          "version": "4.2.46"
        },
        ...
      ],
      "description": "The GNU tar program saves ...",
      "homepage": "http://www.gnu.org/software/tar/",
      "name": "tar",
      "summary": "A GNU file archiving program",
      "upstream_vcs": "UPSTREAM_VCS"
    }
  ]
}

POST /api/v0/compose

Start a compose. The content type should be ‘application/json’ and the body of the POST should look like this:

{
  "blueprint_name": "http-server",
  "compose_type": "tar",
  "branch": "master"
}

Pass it the name of the blueprint, the type of output (from ‘/api/v0/compose/types’), and the blueprint branch to use. ‘branch’ is optional and will default to master. It will create a new build and add it to the queue. It returns the build uuid and a status if it succeeds:

{
  "build_id": "e6fa6db4-9c81-4b70-870f-a697ca405cdf",
  "status": true
}

/api/v0/compose/types

Returns the list of supported output types that are valid for use with ‘POST /api/v0/compose’

{
“types”: [
{
“enabled”: true, “name”: “tar”

}

]

}

/api/v0/compose/queue

Return the status of the build queue. It includes information about the builds waiting, and the build that is running.

Example:

{
  "new": [
    {
      "id": "45502a6d-06e8-48a5-a215-2b4174b3614b",
      "blueprint": "glusterfs",
      "queue_status": "WAITING",
      "job_created": 1517362647.4570868,
      "version": "0.0.6"
    },
    {
      "id": "6d292bd0-bec7-4825-8d7d-41ef9c3e4b73",
      "blueprint": "kubernetes",
      "queue_status": "WAITING",
      "job_created": 1517362659.0034983,
      "version": "0.0.1"
    }
  ],
  "run": [
    {
      "id": "745712b2-96db-44c0-8014-fe925c35e795",
      "blueprint": "glusterfs",
      "queue_status": "RUNNING",
      "job_created": 1517362633.7965999,
      "job_started": 1517362633.8001345,
      "version": "0.0.6"
    }
  ]
}

/api/v0/compose/finished

Return the details on all of the finished composes on the system.

Example:

{
  "finished": [
    {
      "id": "70b84195-9817-4b8a-af92-45e380f39894",
      "blueprint": "glusterfs",
      "queue_status": "FINISHED",
      "job_created": 1517351003.8210032,
      "job_started": 1517351003.8230415,
      "job_finished": 1517359234.1003145,
      "version": "0.0.6"
    },
    {
      "id": "e695affd-397f-4af9-9022-add2636e7459",
      "blueprint": "glusterfs",
      "queue_status": "FINISHED",
      "job_created": 1517362289.7193348,
      "job_started": 1517362289.9751132,
      "job_finished": 1517363500.1234567,
      "version": "0.0.6"
    }
  ]
}

/api/v0/compose/failed

Return the details on all of the failed composes on the system.

Example:

{
  "failed": [
     {
      "id": "8c8435ef-d6bd-4c68-9bf1-a2ef832e6b1a",
      "blueprint": "http-server",
      "queue_status": "FAILED",
      "job_created": 1517523249.9301329,
      "job_started": 1517523249.9314211,
      "job_finished": 1517523255.5623411,
      "version": "0.0.2"
    }
  ]
}

/api/v0/compose/status/<uuids>[?blueprint=<blueprint_name>&status=<compose_status>&type=<compose_type>]

Return the details for each of the comma-separated list of uuids. A uuid of ‘*’ will return details for all composes.

Example:

{
  "uuids": [
    {
      "id": "8c8435ef-d6bd-4c68-9bf1-a2ef832e6b1a",
      "blueprint": "http-server",
      "queue_status": "FINISHED",
      "job_created": 1517523644.2384307,
      "job_started": 1517523644.2551234,
      "job_finished": 1517523689.9864314,
      "version": "0.0.2"
    },
    {
      "id": "45502a6d-06e8-48a5-a215-2b4174b3614b",
      "blueprint": "glusterfs",
      "queue_status": "FINISHED",
      "job_created": 1517363442.188399,
      "job_started": 1517363442.325324,
      "job_finished": 1517363451.653621,
      "version": "0.0.6"
    }
  ]
}

DELETE /api/v0/compose/cancel/<uuid>

Cancel the build, if it is not finished, and delete the results. It will return a status of True if it is successful.

Example:

{
  "status": true,
  "uuid": "03397f8d-acff-4cdb-bd31-f629b7a948f5"
}

DELETE /api/v0/compose/delete/<uuids>

Delete the list of comma-separated uuids from the compose results.

Example:

{
  "errors": [],
  "uuids": [
    {
      "status": true,
      "uuid": "ae1bf7e3-7f16-4c9f-b36e-3726a1093fd0"
    }
  ]
}

/api/v0/compose/info/<uuid>

Get detailed information about the compose. The returned JSON string will contain the following information:

  • id - The uuid of the comoposition
  • config - containing the configuration settings used to run Anaconda
  • blueprint - The depsolved blueprint used to generate the kickstart
  • commit - The (local) git commit hash for the blueprint used
  • deps - The NEVRA of all of the dependencies used in the composition
  • compose_type - The type of output generated (tar, iso, etc.)
  • queue_status - The final status of the composition (FINISHED or FAILED)

Example:

{
  "commit": "7078e521a54b12eae31c3fd028680da7a0815a4d",
  "compose_type": "tar",
  "config": {
    "anaconda_args": "",
    "armplatform": "",
    "compress_args": [],
    "compression": "xz",
    "image_name": "root.tar.xz",
    ...
  },
  "deps": {
    "packages": [
      {
        "arch": "x86_64",
        "epoch": "0",
        "name": "acl",
        "release": "14.el7",
        "version": "2.2.51"
      }
    ]
  },
  "id": "c30b7d80-523b-4a23-ad52-61b799739ce8",
  "queue_status": "FINISHED",
  "blueprint": {
    "description": "An example kubernetes master",
    ...
  }
}

/api/v0/compose/metadata/<uuid>

Returns a .tar of the metadata used for the build. This includes all the information needed to reproduce the build, including the final kickstart populated with repository and package NEVRA.

The mime type is set to ‘application/x-tar’ and the filename is set to UUID-metadata.tar

The .tar is uncompressed, but is not large.

/api/v0/compose/results/<uuid>

Returns a .tar of the metadata, logs, and output image of the build. This includes all the information needed to reproduce the build, including the final kickstart populated with repository and package NEVRA. The output image is already in compressed form so the returned tar is not compressed.

The mime type is set to ‘application/x-tar’ and the filename is set to UUID.tar

/api/v0/compose/logs/<uuid>

Returns a .tar of the anaconda build logs. The tar is not compressed, but is not large.

The mime type is set to ‘application/x-tar’ and the filename is set to UUID-logs.tar

/api/v0/compose/image/<uuid>

Returns the output image from the build. The filename is set to the filename from the build with the UUID as a prefix. eg. UUID-root.tar.xz or UUID-boot.iso.

/api/v0/compose/log/<uuid>[?size=kbytes]

Returns the end of the anaconda.log. The size parameter is optional and defaults to 1Mbytes if it is not included. The returned data is raw text from the end of the logfile, starting on a line boundry.

Example:

12:59:24,222 INFO anaconda: Running Thread: AnaConfigurationThread (140629395244800)
12:59:24,223 INFO anaconda: Configuring installed system
12:59:24,912 INFO anaconda: Configuring installed system
12:59:24,912 INFO anaconda: Creating users
12:59:24,913 INFO anaconda: Clearing libuser.conf at /tmp/libuser.Dyy8Gj
12:59:25,154 INFO anaconda: Creating users
12:59:25,155 INFO anaconda: Configuring addons
12:59:25,155 INFO anaconda: Configuring addons
12:59:25,155 INFO anaconda: Generating initramfs
12:59:49,467 INFO anaconda: Generating initramfs
12:59:49,467 INFO anaconda: Running post-installation scripts
12:59:49,467 INFO anaconda: Running kickstart %%post script(s)
12:59:50,782 INFO anaconda: All kickstart %%post script(s) have been run
12:59:50,782 INFO anaconda: Running post-installation scripts
12:59:50,784 INFO anaconda: Thread Done: AnaConfigurationThread (140629395244800)
pylorax.api.v0.blueprint_exists(api, branch, blueprint_name)[source]

Return True if the blueprint exists

Parameters:
  • api (Flask) – flask object
  • branch (str) – Branch name
  • recipe_name (str) – Recipe name to read
pylorax.api.v0.take_limits(iterable, offset, limit)[source]

Apply offset and limit to an iterable object

Parameters:
  • iterable (iter) – The object to limit
  • offset (int) – The number of items to skip
  • limit (int) – The total number of items to return
Returns:

A subset of the iterable
pylorax.api.v0.v0_api(api)[source]

pylorax.api.workspace module

pylorax.api.workspace.workspace_delete(repo, branch, recipe_name)[source]

Delete the recipe from the workspace

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • recipe_name (str) – The name of the recipe
Returns:

None
Raises:

IO related errors
pylorax.api.workspace.workspace_dir(repo, branch)[source]

Create the workspace’s path from a Repository and branch

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
Returns:

The path to the branch’s workspace directory
Return type:

str
pylorax.api.workspace.workspace_read(repo, branch, recipe_name)[source]

Read a Recipe from the branch’s workspace

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • recipe_name (str) – The name of the recipe
Returns:

The workspace copy of the recipe, or None if it doesn’t exist
Return type:

Recipe or None
Raises:

RecipeFileError
pylorax.api.workspace.workspace_write(repo, branch, recipe)[source]

Write a recipe to the workspace

Parameters:
  • repo (Git.Repository) – Open repository
  • branch (str) – Branch name
  • recipe (Recipe) – The recipe to write to the workspace
Returns:

None
Raises:

IO related errors

Module contents

pylorax.api.crossdomain(origin, methods=None, headers=None, max_age=21600, attach_to_all=True, automatic_options=True)[source]