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manager/allocator/cnmallocator: convert to new-style driver registration #3143

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merged 3 commits into from
Jul 7, 2023

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corhere
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@corhere corhere commented Jul 7, 2023

The libnetwork driver registry and driver Init() functions were deprecated in moby/moby@28edc8e in favour of separate registries for network and IPAM drivers and Register() functions for the drivers.

Refactor the network driver initializer list to be a map as the network types should be unique, and it allows IsBuiltInDriver() to run in O(1) time.

The remote drivers are a special case as they dynamically register plugins with the driver registries when the plugins are initialized. As they are the only drivers which need a PluginGetter, register the remote drivers separately as a special case rather than trying to continue shoehorning them into initializers and initIPAMDrivers().

There is no "remote" network type. However, Swarmkit has accepted it as a valid network type ever since support for selectable network drivers was first added in 5507383. This is a bug, as attempting to create such a network would ultimately fail. Special-casing the remote network driver incidentally fixes the bug as it is no longer present in initializers, which is used as the source of truth for IsBuiltinDriver().

- What I did

- How I did it

- How to test it

- Description for the changelog

corhere and others added 3 commits July 7, 2023 11:52
…054c (25.0-dev)

full diff: moby/moby@75ee002...98d3da7

Signed-off-by: Cory Snider <csnider@mirantis.com>
This function was not using the DriverCallback interface, and only
required the Registerer interface.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The libnetwork driver registry and driver Init() functions were
deprecated in moby/moby@28edc8e
in favour of separate registries for network and IPAM drivers and
Register() functions for the drivers.

Refactor the network driver initializer list to be a map as the network
types should be unique, and it allows IsBuiltInDriver() to run in O(1)
time.

The remote drivers are a special case as they dynamically register
plugins with the driver registries when the plugins are initialized.
As they are the only drivers which need a PluginGetter, register the
remote drivers separately as a special case rather than trying to
continue shoehorning them into initializers and initIPAMDrivers().

There is no "remote" network type. However, Swarmkit has accepted it as
a valid network type ever since support for selectable network drivers
was first added in 5507383. This is a
bug, as attempting to create such a network would ultimately fail.
Special-casing the remote network driver incidentally fixes the bug as
it is no longer present in initializers, which is used as the source of
truth for IsBuiltinDriver().

Signed-off-by: Cory Snider <csnider@mirantis.com>
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corhere commented Jul 7, 2023

@thaJeztah @dperny PTAL

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LGTM!

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whoops wrong radio button

LGTM thus! 😂🤣

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3 participants