Re: [openstack-dev] [Murano] Versioning of Murano packages and MuranoPL classes
Gosha, Could you please elaborate what do you mean by extra blocks? Glance V3 comes with Glance out-of-the box, no extra deployment is needed. The only thing one will have to install is Murano Package Type plugin - but it will be installed at the same time with Murano. -- Regards, Alexander Tivelkov On Mon, Jul 13, 2015 at 5:54 PM, Georgy Okrokvertskhov gokrokvertsk...@mirantis.com wrote: On Mon, Jul 13, 2015 at 2:19 AM, Alexander Tivelkov ativel...@mirantis.com wrote: Hi Gosha, Supporting versioning in existing backend will require us to re-implement the significant part of Artifact Repository in Murano API: we'll need to add versions and dependencies concepts into our model (which is already complicated and dirty enough), extend appropriate API calls etc. And all the efforts will be a waste of time once we finally migrate to Artifacts. Also, what do you mean by set by default? V3 API is experimental, but it is already merged into upstream Glance, so there is no problem with using it in Murano right away. This is exactly why I have these concerns. I wonder how much customers will use experimental API in production. I just don't want to add extra block on Murano adoption way. -- Regards, Alexander Tivelkov On Fri, Jul 10, 2015 at 5:56 PM, Georgy Okrokvertskhov gokrokvertsk...@mirantis.com wrote: Hi Alex, Thank you for the great summary. I have a concern about item #8. Can we add an option to Murano to use previous storage engine rather then Glance v3? We need to make sure that v3 API in Glance is set by default before we do a hard dependency on it in Murano. Thanks Gosha On Fri, Jul 10, 2015 at 4:53 AM, Alexander Tivelkov ativel...@mirantis.com wrote: Hi folks, Ability to manage multiple versions of application packages and their dependencies was always an important item in Murano roadmap, however we still don't have a clear spec for this feature. Yesterday we hosted a small design session to come up with a plan on what can be done in Liberty timeframe to have proper versioning for MuranoPL classes and packages. Stan Lagun, Kirill Zaitsev and myself participated offline, some other muranoers joined remotely. Thanks to everybody who joined us. TL;DR: it turns out that now we have a clear plan which will allow us to achieve proper versioning of the packages and classes, and we'll try to implement the most important parts of it in Liberty. Here is the detailed outcome of the session: 1. We'll use the standard Semantic Versioning format ('Major.Minor.Patch[-dev-build.label[+metadata.label]]') to version our packages: changes which break backwards-compatibility should increment the major segment, non-breaking new features increment the minor segment and all non-breaking bugfixes increment the patch segment. The developers should be carefull with the new features part: if you add a new method to a class, it may be considered a breaking change if the existing subclasses of this class have the same method already declared. We still assume that such changes should lead to increment of 'minor' segment, however it is up to best judgement of developers in particular case: if the risk of such method override is really high it may worth to increment the 'major' segment. Proper guideline on the versioning rules will be published closer to L release. 2. A new field 'Version' is introduced into package manifest file which should define package version in complete semver format. The field itself is optional (so existing apps are not broken), if it is not specified the package is assumed to have version '0.0.0' 3. The existing 'Require' block of Application manifest will be used to specify the package dependencies. Currently it is a yaml-based dictionary, with the keys set to fully-qualified names of the dependency packages and the values set to the version of those dependencies. Currently this block is used only for integration with apps stored at apps.openstack.org. It is suggested to use this block in the deployment process as well, and extend its semantics. The version of the dependency specified there should also follow the semver notation, however it may be specified in the shortened format, i.e. without specifying the 'patch' or 'patch' and 'minior' components. In this case the dependency will be specified as a range of allowed versions. For example, a dependency version 1.2 will mean a (1.2.0 = version 1.3) range. If the version of a dependency is not specified (like in this existing app - [1]) then we assume the version 0 - i.e. the last available pre-release version of a package. 4. Murano core library is also a package which has its own version. The current one is assumed to have a version 0.1.0, the one which is going to be released in L will be probably called 0.2.0. The
Re: [openstack-dev] [Murano] Versioning of Murano packages and MuranoPL classes
Alexander, do you plan to update the https://review.openstack.org/#/c/140402/ versioning spec? We can possibly try to make it a joint effort, if you like. -- Kirill Zaitsev Murano team Software Engineer Mirantis, Inc On 14 Jul 2015 at 11:34:56, Alexander Tivelkov (ativel...@mirantis.com) wrote: Gosha, Could you please elaborate what do you mean by extra blocks? Glance V3 comes with Glance out-of-the box, no extra deployment is needed. The only thing one will have to install is Murano Package Type plugin - but it will be installed at the same time with Murano. -- Regards, Alexander Tivelkov On Mon, Jul 13, 2015 at 5:54 PM, Georgy Okrokvertskhov gokrokvertsk...@mirantis.com wrote: On Mon, Jul 13, 2015 at 2:19 AM, Alexander Tivelkov ativel...@mirantis.com wrote: Hi Gosha, Supporting versioning in existing backend will require us to re-implement the significant part of Artifact Repository in Murano API: we'll need to add versions and dependencies concepts into our model (which is already complicated and dirty enough), extend appropriate API calls etc. And all the efforts will be a waste of time once we finally migrate to Artifacts. Also, what do you mean by set by default? V3 API is experimental, but it is already merged into upstream Glance, so there is no problem with using it in Murano right away. This is exactly why I have these concerns. I wonder how much customers will use experimental API in production. I just don't want to add extra block on Murano adoption way. -- Regards, Alexander Tivelkov On Fri, Jul 10, 2015 at 5:56 PM, Georgy Okrokvertskhov gokrokvertsk...@mirantis.com wrote: Hi Alex, Thank you for the great summary. I have a concern about item #8. Can we add an option to Murano to use previous storage engine rather then Glance v3? We need to make sure that v3 API in Glance is set by default before we do a hard dependency on it in Murano. Thanks Gosha On Fri, Jul 10, 2015 at 4:53 AM, Alexander Tivelkov ativel...@mirantis.com wrote: Hi folks, Ability to manage multiple versions of application packages and their dependencies was always an important item in Murano roadmap, however we still don't have a clear spec for this feature. Yesterday we hosted a small design session to come up with a plan on what can be done in Liberty timeframe to have proper versioning for MuranoPL classes and packages. Stan Lagun, Kirill Zaitsev and myself participated offline, some other muranoers joined remotely. Thanks to everybody who joined us. TL;DR: it turns out that now we have a clear plan which will allow us to achieve proper versioning of the packages and classes, and we'll try to implement the most important parts of it in Liberty. Here is the detailed outcome of the session: We'll use the standard Semantic Versioning format ('Major.Minor.Patch[-dev-build.label[+metadata.label]]') to version our packages: changes which break backwards-compatibility should increment the major segment, non-breaking new features increment the minor segment and all non-breaking bugfixes increment the patch segment. The developers should be carefull with the new features part: if you add a new method to a class, it may be considered a breaking change if the existing subclasses of this class have the same method already declared. We still assume that such changes should lead to increment of 'minor' segment, however it is up to best judgement of developers in particular case: if the risk of such method override is really high it may worth to increment the 'major' segment. Proper guideline on the versioning rules will be published closer to L release. A new field 'Version' is introduced into package manifest file which should define package version in complete semver format. The field itself is optional (so existing apps are not broken), if it is not specified the package is assumed to have version '0.0.0' The existing 'Require' block of Application manifest will be used to specify the package dependencies. Currently it is a yaml-based dictionary, with the keys set to fully-qualified names of the dependency packages and the values set to the version of those dependencies. Currently this block is used only for integration with apps stored at apps.openstack.org. It is suggested to use this block in the deployment process as well, and extend its semantics. The version of the dependency specified there should also follow the semver notation, however it may be specified in the shortened format, i.e. without specifying the 'patch' or 'patch' and 'minior' components. In this case the dependency will be specified as a range of allowed versions. For example, a dependency version 1.2 will mean a (1.2.0 = version 1.3) range. If the version of a dependency is not specified (like in this existing app - [1]) then we assume the version 0 - i.e. the last available pre-release version of a package. Murano core library is also a package which has its own version. The
Re: [openstack-dev] [Murano] Versioning of Murano packages and MuranoPL classes
Hi Gosha, Supporting versioning in existing backend will require us to re-implement the significant part of Artifact Repository in Murano API: we'll need to add versions and dependencies concepts into our model (which is already complicated and dirty enough), extend appropriate API calls etc. And all the efforts will be a waste of time once we finally migrate to Artifacts. Also, what do you mean by set by default? V3 API is experimental, but it is already merged into upstream Glance, so there is no problem with using it in Murano right away. -- Regards, Alexander Tivelkov On Fri, Jul 10, 2015 at 5:56 PM, Georgy Okrokvertskhov gokrokvertsk...@mirantis.com wrote: Hi Alex, Thank you for the great summary. I have a concern about item #8. Can we add an option to Murano to use previous storage engine rather then Glance v3? We need to make sure that v3 API in Glance is set by default before we do a hard dependency on it in Murano. Thanks Gosha On Fri, Jul 10, 2015 at 4:53 AM, Alexander Tivelkov ativel...@mirantis.com wrote: Hi folks, Ability to manage multiple versions of application packages and their dependencies was always an important item in Murano roadmap, however we still don't have a clear spec for this feature. Yesterday we hosted a small design session to come up with a plan on what can be done in Liberty timeframe to have proper versioning for MuranoPL classes and packages. Stan Lagun, Kirill Zaitsev and myself participated offline, some other muranoers joined remotely. Thanks to everybody who joined us. TL;DR: it turns out that now we have a clear plan which will allow us to achieve proper versioning of the packages and classes, and we'll try to implement the most important parts of it in Liberty. Here is the detailed outcome of the session: 1. We'll use the standard Semantic Versioning format ('Major.Minor.Patch[-dev-build.label[+metadata.label]]') to version our packages: changes which break backwards-compatibility should increment the major segment, non-breaking new features increment the minor segment and all non-breaking bugfixes increment the patch segment. The developers should be carefull with the new features part: if you add a new method to a class, it may be considered a breaking change if the existing subclasses of this class have the same method already declared. We still assume that such changes should lead to increment of 'minor' segment, however it is up to best judgement of developers in particular case: if the risk of such method override is really high it may worth to increment the 'major' segment. Proper guideline on the versioning rules will be published closer to L release. 2. A new field 'Version' is introduced into package manifest file which should define package version in complete semver format. The field itself is optional (so existing apps are not broken), if it is not specified the package is assumed to have version '0.0.0' 3. The existing 'Require' block of Application manifest will be used to specify the package dependencies. Currently it is a yaml-based dictionary, with the keys set to fully-qualified names of the dependency packages and the values set to the version of those dependencies. Currently this block is used only for integration with apps stored at apps.openstack.org. It is suggested to use this block in the deployment process as well, and extend its semantics. The version of the dependency specified there should also follow the semver notation, however it may be specified in the shortened format, i.e. without specifying the 'patch' or 'patch' and 'minior' components. In this case the dependency will be specified as a range of allowed versions. For example, a dependency version 1.2 will mean a (1.2.0 = version 1.3) range. If the version of a dependency is not specified (like in this existing app - [1]) then we assume the version 0 - i.e. the last available pre-release version of a package. 4. Murano core library is also a package which has its own version. The current one is assumed to have a version 0.1.0, the one which is going to be released in L will be probably called 0.2.0. The lib is still quickly evolving, so we are not releasing a 1.0.0 until we are sure that we are not going to have any breaking changes anytime soon. As with any other package it will be possible to have several versions of the Core Library installed in Murano at the same moment of time. 5. There is no mandatory need to add the the dependency on the core library to the Requires block of each application, as it is added there implicitly. However, this implicit dependency will have a version 0 - i.e. will reference the latest pre-release version of the Core Library available. So it is still better to pin the core library requirement to a particular
Re: [openstack-dev] [Murano] Versioning of Murano packages and MuranoPL classes
On Mon, Jul 13, 2015 at 2:19 AM, Alexander Tivelkov ativel...@mirantis.com wrote: Hi Gosha, Supporting versioning in existing backend will require us to re-implement the significant part of Artifact Repository in Murano API: we'll need to add versions and dependencies concepts into our model (which is already complicated and dirty enough), extend appropriate API calls etc. And all the efforts will be a waste of time once we finally migrate to Artifacts. Also, what do you mean by set by default? V3 API is experimental, but it is already merged into upstream Glance, so there is no problem with using it in Murano right away. This is exactly why I have these concerns. I wonder how much customers will use experimental API in production. I just don't want to add extra block on Murano adoption way. -- Regards, Alexander Tivelkov On Fri, Jul 10, 2015 at 5:56 PM, Georgy Okrokvertskhov gokrokvertsk...@mirantis.com wrote: Hi Alex, Thank you for the great summary. I have a concern about item #8. Can we add an option to Murano to use previous storage engine rather then Glance v3? We need to make sure that v3 API in Glance is set by default before we do a hard dependency on it in Murano. Thanks Gosha On Fri, Jul 10, 2015 at 4:53 AM, Alexander Tivelkov ativel...@mirantis.com wrote: Hi folks, Ability to manage multiple versions of application packages and their dependencies was always an important item in Murano roadmap, however we still don't have a clear spec for this feature. Yesterday we hosted a small design session to come up with a plan on what can be done in Liberty timeframe to have proper versioning for MuranoPL classes and packages. Stan Lagun, Kirill Zaitsev and myself participated offline, some other muranoers joined remotely. Thanks to everybody who joined us. TL;DR: it turns out that now we have a clear plan which will allow us to achieve proper versioning of the packages and classes, and we'll try to implement the most important parts of it in Liberty. Here is the detailed outcome of the session: 1. We'll use the standard Semantic Versioning format ('Major.Minor.Patch[-dev-build.label[+metadata.label]]') to version our packages: changes which break backwards-compatibility should increment the major segment, non-breaking new features increment the minor segment and all non-breaking bugfixes increment the patch segment. The developers should be carefull with the new features part: if you add a new method to a class, it may be considered a breaking change if the existing subclasses of this class have the same method already declared. We still assume that such changes should lead to increment of 'minor' segment, however it is up to best judgement of developers in particular case: if the risk of such method override is really high it may worth to increment the 'major' segment. Proper guideline on the versioning rules will be published closer to L release. 2. A new field 'Version' is introduced into package manifest file which should define package version in complete semver format. The field itself is optional (so existing apps are not broken), if it is not specified the package is assumed to have version '0.0.0' 3. The existing 'Require' block of Application manifest will be used to specify the package dependencies. Currently it is a yaml-based dictionary, with the keys set to fully-qualified names of the dependency packages and the values set to the version of those dependencies. Currently this block is used only for integration with apps stored at apps.openstack.org. It is suggested to use this block in the deployment process as well, and extend its semantics. The version of the dependency specified there should also follow the semver notation, however it may be specified in the shortened format, i.e. without specifying the 'patch' or 'patch' and 'minior' components. In this case the dependency will be specified as a range of allowed versions. For example, a dependency version 1.2 will mean a (1.2.0 = version 1.3) range. If the version of a dependency is not specified (like in this existing app - [1]) then we assume the version 0 - i.e. the last available pre-release version of a package. 4. Murano core library is also a package which has its own version. The current one is assumed to have a version 0.1.0, the one which is going to be released in L will be probably called 0.2.0. The lib is still quickly evolving, so we are not releasing a 1.0.0 until we are sure that we are not going to have any breaking changes anytime soon. As with any other package it will be possible to have several versions of the Core Library installed in Murano at the same moment of time. 5. There is no mandatory need to add the the dependency on the core library to the Requires
[openstack-dev] [Murano] Versioning of Murano packages and MuranoPL classes
Hi folks, Ability to manage multiple versions of application packages and their dependencies was always an important item in Murano roadmap, however we still don't have a clear spec for this feature. Yesterday we hosted a small design session to come up with a plan on what can be done in Liberty timeframe to have proper versioning for MuranoPL classes and packages. Stan Lagun, Kirill Zaitsev and myself participated offline, some other muranoers joined remotely. Thanks to everybody who joined us. TL;DR: it turns out that now we have a clear plan which will allow us to achieve proper versioning of the packages and classes, and we'll try to implement the most important parts of it in Liberty. Here is the detailed outcome of the session: 1. We'll use the standard Semantic Versioning format ('Major.Minor.Patch[-dev-build.label[+metadata.label]]') to version our packages: changes which break backwards-compatibility should increment the major segment, non-breaking new features increment the minor segment and all non-breaking bugfixes increment the patch segment. The developers should be carefull with the new features part: if you add a new method to a class, it may be considered a breaking change if the existing subclasses of this class have the same method already declared. We still assume that such changes should lead to increment of 'minor' segment, however it is up to best judgement of developers in particular case: if the risk of such method override is really high it may worth to increment the 'major' segment. Proper guideline on the versioning rules will be published closer to L release. 2. A new field 'Version' is introduced into package manifest file which should define package version in complete semver format. The field itself is optional (so existing apps are not broken), if it is not specified the package is assumed to have version '0.0.0' 3. The existing 'Require' block of Application manifest will be used to specify the package dependencies. Currently it is a yaml-based dictionary, with the keys set to fully-qualified names of the dependency packages and the values set to the version of those dependencies. Currently this block is used only for integration with apps stored at apps.openstack.org. It is suggested to use this block in the deployment process as well, and extend its semantics. The version of the dependency specified there should also follow the semver notation, however it may be specified in the shortened format, i.e. without specifying the 'patch' or 'patch' and 'minior' components. In this case the dependency will be specified as a range of allowed versions. For example, a dependency version 1.2 will mean a (1.2.0 = version 1.3) range. If the version of a dependency is not specified (like in this existing app - [1]) then we assume the version 0 - i.e. the last available pre-release version of a package. 4. Murano core library is also a package which has its own version. The current one is assumed to have a version 0.1.0, the one which is going to be released in L will be probably called 0.2.0. The lib is still quickly evolving, so we are not releasing a 1.0.0 until we are sure that we are not going to have any breaking changes anytime soon. As with any other package it will be possible to have several versions of the Core Library installed in Murano at the same moment of time. 5. There is no mandatory need to add the the dependency on the core library to the Requires block of each application, as it is added there implicitly. However, this implicit dependency will have a version 0 - i.e. will reference the latest pre-release version of the Core Library available. So it is still better to pin the core library requirement to a particular version to make sure that your app does not break if we introduce any breaking change into the core lib. 6. All classes defined in a package are assumed to have a version identical to the version of the package. 7. Murano Extension Plugins (i.e python packages which declare setuptools-entrypoints in 'io.murano.extensions' namespace) also will have similar versioning semantics: they will have a fully qualified name (defined by the setuptools' package name) and a version (also defined by setuptools), an will get an ability to specify their own dependencies if needed. From the class-loader perspective the MuranoPL classes defined in the plugins are no difference from the classes defined in a regular package. 8. We are going to store murano packages as Glance V3 Artifacts Repository, naturally mapping package's FQN and version to artifact's name and version. The package dependencies will be stored in Glance as cross-artifact dynamic dependencies (i.e. dependencies not on a particular artifact but on the last artifact matching the given name and the version range
Re: [openstack-dev] [Murano] Versioning of Murano packages and MuranoPL classes
Hi Alex, Thank you for the great summary. I have a concern about item #8. Can we add an option to Murano to use previous storage engine rather then Glance v3? We need to make sure that v3 API in Glance is set by default before we do a hard dependency on it in Murano. Thanks Gosha On Fri, Jul 10, 2015 at 4:53 AM, Alexander Tivelkov ativel...@mirantis.com wrote: Hi folks, Ability to manage multiple versions of application packages and their dependencies was always an important item in Murano roadmap, however we still don't have a clear spec for this feature. Yesterday we hosted a small design session to come up with a plan on what can be done in Liberty timeframe to have proper versioning for MuranoPL classes and packages. Stan Lagun, Kirill Zaitsev and myself participated offline, some other muranoers joined remotely. Thanks to everybody who joined us. TL;DR: it turns out that now we have a clear plan which will allow us to achieve proper versioning of the packages and classes, and we'll try to implement the most important parts of it in Liberty. Here is the detailed outcome of the session: 1. We'll use the standard Semantic Versioning format ('Major.Minor.Patch[-dev-build.label[+metadata.label]]') to version our packages: changes which break backwards-compatibility should increment the major segment, non-breaking new features increment the minor segment and all non-breaking bugfixes increment the patch segment. The developers should be carefull with the new features part: if you add a new method to a class, it may be considered a breaking change if the existing subclasses of this class have the same method already declared. We still assume that such changes should lead to increment of 'minor' segment, however it is up to best judgement of developers in particular case: if the risk of such method override is really high it may worth to increment the 'major' segment. Proper guideline on the versioning rules will be published closer to L release. 2. A new field 'Version' is introduced into package manifest file which should define package version in complete semver format. The field itself is optional (so existing apps are not broken), if it is not specified the package is assumed to have version '0.0.0' 3. The existing 'Require' block of Application manifest will be used to specify the package dependencies. Currently it is a yaml-based dictionary, with the keys set to fully-qualified names of the dependency packages and the values set to the version of those dependencies. Currently this block is used only for integration with apps stored at apps.openstack.org. It is suggested to use this block in the deployment process as well, and extend its semantics. The version of the dependency specified there should also follow the semver notation, however it may be specified in the shortened format, i.e. without specifying the 'patch' or 'patch' and 'minior' components. In this case the dependency will be specified as a range of allowed versions. For example, a dependency version 1.2 will mean a (1.2.0 = version 1.3) range. If the version of a dependency is not specified (like in this existing app - [1]) then we assume the version 0 - i.e. the last available pre-release version of a package. 4. Murano core library is also a package which has its own version. The current one is assumed to have a version 0.1.0, the one which is going to be released in L will be probably called 0.2.0. The lib is still quickly evolving, so we are not releasing a 1.0.0 until we are sure that we are not going to have any breaking changes anytime soon. As with any other package it will be possible to have several versions of the Core Library installed in Murano at the same moment of time. 5. There is no mandatory need to add the the dependency on the core library to the Requires block of each application, as it is added there implicitly. However, this implicit dependency will have a version 0 - i.e. will reference the latest pre-release version of the Core Library available. So it is still better to pin the core library requirement to a particular version to make sure that your app does not break if we introduce any breaking change into the core lib. 6. All classes defined in a package are assumed to have a version identical to the version of the package. 7. Murano Extension Plugins (i.e python packages which declare setuptools-entrypoints in 'io.murano.extensions' namespace) also will have similar versioning semantics: they will have a fully qualified name (defined by the setuptools' package name) and a version (also defined by setuptools), an will get an ability to specify their own dependencies if needed. From the class-loader perspective the MuranoPL classes defined in the plugins are no