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to support its customization, extensibility and testability. It will be easier to monitor the installation, maintain an install class or an | to support its customization, extensibility and testability. It will be easier to monitor the installation, maintain an install class or an | ||
addon, drop some modules or provide your own UI. | addon, drop some modules or provide your own UI. | ||
This is just the first part of our move towards a modular (DBus) solution. The whole Anaconda logic will not be moved in F28 to modules at once, instead small parts will be moved to the DBUS modules incrementally. This process will start with simple non-critical parts (e.g. reading, parsing and getting kickstart data for modules) and progressively move to more complicated and critical parts (e.g. running installation tasks like package installation), while making sure the installation keeps working as expected. | |||
== Benefit to Fedora == | == Benefit to Fedora == | ||
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* Anaconda modules can be enabled and disabled or even not present in the installation environment. | * Anaconda modules can be enabled and disabled or even not present in the installation environment. | ||
* Better test-ability of Anaconda. | * Better test-ability of Anaconda. | ||
<!-- What is the benefit to the platform? If this is a major capability update, what has changed? If this is a new functionality, what capabilities does it bring? Why will Fedora become a better distribution or project because of this proposal?--> | <!-- What is the benefit to the platform? If this is a major capability update, what has changed? If this is a new functionality, what capabilities does it bring? Why will Fedora become a better distribution or project because of this proposal?--> | ||
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<!-- Does this feature require coordination with release engineering (e.g. changes to installer image generation or update package delivery)? Is a mass rebuild required? include a link to the releng issue. | <!-- Does this feature require coordination with release engineering (e.g. changes to installer image generation or update package delivery)? Is a mass rebuild required? include a link to the releng issue. | ||
The issue is required to be filed prior to feature submission, to ensure that someone is on board to do any process development work and testing, and that all changes make it into the pipeline; a bullet point in a change is not sufficient communication --> | The issue is required to be filed prior to feature submission, to ensure that someone is on board to do any process development work and testing, and that all changes make it into the pipeline; a bullet point in a change is not sufficient communication --> | ||
** [[Fedora_Program_Management/ReleaseBlocking/Fedora{{FedoraVersionNumber|next}}|List of deliverables]]: N/A | ** [[Fedora_Program_Management/ReleaseBlocking/Fedora{{FedoraVersionNumber|next}}|List of deliverables]]: N/A <!-- REQUIRED FOR SYSTEM WIDE CHANGES --> | ||
<!-- Please check the list of Fedora release deliverables and list all the differences the feature brings --> | <!-- Please check the list of Fedora release deliverables and list all the differences the feature brings --> | ||
* Policies and guidelines: | * Policies and guidelines: | ||
** No change should be required <!-- REQUIRED FOR SYSTEM WIDE CHANGES --> | |||
<!-- Do the packaging guidelines or other documents need to be updated for this feature? If so, does it need to happen before or after the implementation is done? If a FPC ticket exists, add a link here. --> | <!-- Do the packaging guidelines or other documents need to be updated for this feature? If so, does it need to happen before or after the implementation is done? If a FPC ticket exists, add a link here. --> | ||
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<!-- REQUIRED FOR SYSTEM WIDE CHANGES --> | <!-- REQUIRED FOR SYSTEM WIDE CHANGES --> | ||
This change should be backward compatible. No user intervention will be required. | |||
== How To Test == | == How To Test == | ||
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<!-- REQUIRED FOR SYSTEM WIDE CHANGES --> | <!-- REQUIRED FOR SYSTEM WIDE CHANGES --> | ||
Testing should stay the same for Fedora QA. Existing tests should be working all the time. | |||
== User Experience == | == User Experience == | ||
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<!-- REQUIRED FOR SYSTEM WIDE CHANGES --> | <!-- REQUIRED FOR SYSTEM WIDE CHANGES --> | ||
Only addon packages may require some changes in their code. | |||
== Contingency Plan == | == Contingency Plan == | ||
<!-- If you cannot complete your feature by the final development freeze, what is the backup plan? This might be as simple as "Revert the shipped configuration". Or it might not (e.g. rebuilding a number of dependent packages). If you feature is not completed in time we want to assure others that other parts of Fedora will not be in jeopardy. --> | <!-- If you cannot complete your feature by the final development freeze, what is the backup plan? This might be as simple as "Revert the shipped configuration". Or it might not (e.g. rebuilding a number of dependent packages). If you feature is not completed in time we want to assure others that other parts of Fedora will not be in jeopardy. --> | ||
* Contingency mechanism: | * Contingency mechanism: | ||
** New rawhide fallback branch will be created on the day of switching first component to the new DBus modular solution. | |||
** All critical patches (blockers, freeze exceptions...) will be backported to this fallback branch. | |||
** This special branch can be used if contingency plan is needed. | |||
<!-- When is the last time the contingency mechanism can be put in place? This will typically be the beta freeze. --> | <!-- When is the last time the contingency mechanism can be put in place? This will typically be the beta freeze. --> | ||
* Contingency deadline: | * Contingency deadline: A week before final freeze <!-- REQUIRED FOR SYSTEM WIDE CHANGES --> | ||
<!-- Does finishing this feature block the release, or can we ship with the feature in incomplete state? --> | <!-- Does finishing this feature block the release, or can we ship with the feature in incomplete state? --> | ||
* Blocks release? No <!-- REQUIRED FOR SYSTEM WIDE CHANGES --> | * Blocks release? No <!-- REQUIRED FOR SYSTEM WIDE CHANGES --> | ||
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[[Category:SelfContainedChange]] | <!-- [[Category:SelfContainedChange]] --> | ||
[[Category:SystemWideChange]] | |||
Revision as of 14:56, 9 January 2018
Anaconda modularization
Summary
Anaconda installer will be split into several modules that will communicate over DBus using stable API.
Owner
- Name: Jiří Konečný
- Email: jkonecny@redhat.com
- Release notes owner:
Current status
- Targeted release: Fedora 28
- Last updated: 2018-01-09
- Tracker bug: <will be assigned by the Wrangler>
Detailed Description
Anaconda will be split into several modules that will communicate over DBus. The goal is to introduce a stable way to interact with Anaconda to support its customization, extensibility and testability. It will be easier to monitor the installation, maintain an install class or an addon, drop some modules or provide your own UI.
This is just the first part of our move towards a modular (DBus) solution. The whole Anaconda logic will not be moved in F28 to modules at once, instead small parts will be moved to the DBUS modules incrementally. This process will start with simple non-critical parts (e.g. reading, parsing and getting kickstart data for modules) and progressively move to more complicated and critical parts (e.g. running installation tasks like package installation), while making sure the installation keeps working as expected.
Benefit to Fedora
- Anaconda addons have stable API to work with.
- Users can create their own UI or even UI less installation.
- Enables running the UI as a non-root user (a requirement for running Anaconda GUI natively on Wayland in the future).
- Anaconda modules can be enabled and disabled or even not present in the installation environment.
- Better test-ability of Anaconda.
Scope
- Proposal owners:
- Split Anaconda to modules with DBus API.
- Old UI must be modified to use new DBus API.
- Other developers:
- Thanks to the nature of how addons work right now, we need a cooperation from the Anaconda addon developers.
- Release engineering: #7240
- List of deliverables: N/A
- Policies and guidelines:
- No change should be required
- Trademark approval: N/A (not needed for this Change)
Upgrade/compatibility impact
This change should be backward compatible. No user intervention will be required.
How To Test
Testing should stay the same for Fedora QA. Existing tests should be working all the time.
User Experience
User experience should be consistent with the older releases.
Dependencies
Only addon packages may require some changes in their code.
Contingency Plan
- Contingency mechanism:
- New rawhide fallback branch will be created on the day of switching first component to the new DBus modular solution.
- All critical patches (blockers, freeze exceptions...) will be backported to this fallback branch.
- This special branch can be used if contingency plan is needed.
- Contingency deadline: A week before final freeze
- Blocks release? No
Documentation
https://rhinstaller.wordpress.com/2017/10/09/anaconda-modularisation/
Most of the articles here: https://rhinstaller.wordpress.com
Release Notes
TODO