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youki/MirgationGuide.md
Yashodhan cc39179f9f
podman rootless with dbus native (#2370)
* Move dbus_native code to youki, add tests

Signed-off-by: Yashodhan Joshi <yjdoc2@gmail.com>

* (incomplete) move individual systemd components to dbus_native

Signed-off-by: Yashodhan Joshi <yjdoc2@gmail.com>

* (incomplete) Change tests to use dbus_native, move
systemdClientInterface into dbus_native

Signed-off-by: Yashodhan Joshi <yjdoc2@gmail.com>

* (incomplete) Change variant to actual enum, Fix types for systemd

Signed-off-by: Yashodhan Joshi <yjdoc2@gmail.com>

* Fix bug in vector ser/de

Signed-off-by: Yashodhan Joshi <yjdoc2@gmail.com>

* Fix mut requirements, minor lints etc., add client id in dbus

Signed-off-by: Yashodhan Joshi <yjdoc2@gmail.com>

* Add implementation for proxy methods

Signed-off-by: Yashodhan Joshi <yjdoc2@gmail.com>

* Split dbus error from SystemdClientError

Signed-off-by: Yashodhan Joshi <yjdoc2@gmail.com>

* implement system and session connection creation

Signed-off-by: Yashodhan Joshi <yjdoc2@gmail.com>

* Fix typos and failing feature test build

Signed-off-by: Yashodhan Joshi <yjdoc2@gmail.com>

* Completely remove dbus dependency and add docs regarding dbus-native

Signed-off-by: Yashodhan Joshi <yjdoc2@gmail.com>

* Update migration guide, move documentation od dbus_native to cgroups

Signed-off-by: Yashodhan Joshi <yjdoc2@gmail.com>

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Signed-off-by: Yashodhan Joshi <yjdoc2@gmail.com>
2023-10-05 21:08:06 +09:00

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# Migration Guide
This contains information for migrating library versions.
## v0.2.0 -> v0.3.0
### libcgroups
- Switched from dbus-rs to a native dbus implementation see [#2208](https://github.com/containers/youki/issues/2208) for motivation behind this. This replaces the `dbus` module with `dbus_native` module. However, As this is not in public interface for the crate, the users of this crate should not need any code changes. As this removes the dependency on the `libdbus` system library, you can uninstall it if desired.
## v0.1.0 -> v0.2.0
### libcontainer
- The `Rootless` struct has been re-named as `UserNamespaceConfig` , `RootlessIDMapper` has been re-named to `UserNamespaceIDMapper` , and correspondingly the `RootlessError` has been re-named to `UserNamespaceError` . This is due to the fact that the structure was to be used for containers when a new user namespace is to be created, and that is not strictly only for rootless uses. Accordingly, the fields of various structs has been updated to reflect this change :
- rootless (module name) -> user_ns
- Rootless.rootless_id_mapper -> UserNamespaceConfig.id_mapper
- LibcontainerError::Rootless -> LibcontainerError::UserNamespace
- ContainerBuilderImpl.rootless -> ContainerBuilderImpl.user_ns_config
- ContainerArgs.rootless -> ContainerArgs.user_ns_config
- Executor now contains 2 methods for implementation. We introduce a `validate` step in addition to execute. The `validate` should validate the input OCI spec. The step runs after all the namespaces are entered and rootfs is pivoted.
- Executor is now composible instead of an array of executor. To implement multiple executor, create a new executor that runs all the executor. The users are now in control of how multiple executor are run.