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Refactor Network Operator APIs #6016

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@internet-diglett internet-diglett commented Jul 8, 2024

Summary

Our currently deployed APIs for operator networking aren't as user friendly as we'd like them to be. After landing these changes we hope to be able to start breaking ground on Terraform provider updates for rack / operator networking, which should increase user friendliness as well as make testing more streamlined in some scenarios. This will also allow us to migrate from using --json-object with Oxide cli commands, for example:

# Add a route
sled03 ➜  a4x2 git:(main) ✗ oxide --profile a4x2 system networking switch-port configuration route add  \
--configuration "default-uplink0" \
--dst 10.88.0.0/24 \
--gw 10.8.0.1 \
--interface qsfp0
{
  "dst": "10.88.0.0/24",
  "gw": "10.8.0.1/32",
  "interface_name": "qsfp0",
  "port_settings_id": "ec815e89-ff84-4e85-ad54-55020eb812c9"
}

# List routes
sled03 ➜  a4x2 git:(main) ✗ oxide --profile a4x2 system networking switch-port configuration route list \
--configuration "default-uplink0"
[
  {
    "dst": "10.88.0.0/24",
    "gw": "10.8.0.1/32",
    "interface_name": "qsfp0",
    "port_settings_id": "ec815e89-ff84-4e85-ad54-55020eb812c9"
  }
]

# Delete a route
sled03 ➜  a4x2 git:(main) ✗ oxide --profile a4x2 system networking switch-port configuration route remove  \
--configuration "default-uplink0" \
--dst 10.88.0.0/24 \
--gw 10.8.0.1 \
--interface qsfp0

# List routes again
sled03 ➜  a4x2 git:(main) ✗ oxide --profile a4x2 system networking switch-port configuration route list --configuration "default-uplink0"
[]

Changes

The following changes should mostly preserve backwards compatibility with the existing API, so we should be able to continue to use all of our existing automation / tooling / scripts for the time being.

  • Change namespace for api endpoints / commands to switch-port-configuration (switch-port-settings is not plural-friendly)

  • Break AddressLot and AddressLotBlock into separate APIs

  • Add endpoint for viewing which configuration has been applied to a switch port (i.e. configuration_view)

  • Rename settings_apply and settings_clear to configuration_apply and configuration_clear

  • Create separate API endpoints for each child object under SwitchPortSettings

    • geometry configuration
    • link configuration
    • address configuration
    • route configuration
    • bgp peer configuration
      • modification: break out communities
      • modification: break out import list
      • modification: break out allow list
  • Create integration tests for new endpoints

    • geometry configuration
    • link configuration
    • address configuration
    • route configuration
    • bgp peer configuration
    • bgp peer communities
    • bgp peer allowed import lists
    • bgp peer allowed export lists
  • update CLI client library: WIP: refactor network operator APIs oxide.rs#817

Additional Acceptance Criteria

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You might think about generating the SDK and CLI as you evolve this API. In particular, I'd love to see this list of CLI commands that require the --json-body parameter to shrink: https://github.com/oxidecomputer/oxide.rs/blob/main/cli/tests/data/json-body-required.txt (note about half of them are networking-related)

@@ -9727,7 +9816,7 @@
"last_address"
]
},
"AddressLotBlockCreate": {
"AddressLotBlock2": {
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just looking through this quickly, but I think we should avoid adding more of these name conflicting types that result in the 2 suffix.

@internet-diglett
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You might think about generating the SDK and CLI as you evolve this API. In particular, I'd love to see this list of CLI commands that require the --json-body parameter to shrink: https://github.com/oxidecomputer/oxide.rs/blob/main/cli/tests/data/json-body-required.txt (note about half of them are networking-related)

@ahl do we have a preferred pattern that we want to use to avoid this?

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ahl commented Jul 15, 2024

You might think about generating the SDK and CLI as you evolve this API. In particular, I'd love to see this list of CLI commands that require the --json-body parameter to shrink: https://github.com/oxidecomputer/oxide.rs/blob/main/cli/tests/data/json-body-required.txt (note about half of them are networking-related)

@ahl do we have a preferred pattern that we want to use to avoid this?

There are some structures that are challenging to generate, in particular deeply nested structs. Perhaps put another way: you might keep in mind how you'd like the CLI to work for a particular API concept and then organize the API in a way where you can imagine the direct translation e.g. to CLI arguments. There's more that progenitor could and can do, but some structures--such as SwitchPortSettingsCreate--are pretty hard to imagine translated into something rational at the CLI

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@ahl I generated a local CLI with this PR's openapi spec and it seems to avoid the need for --json-body:

For more information, try '--help'.
$ ./target/debug/oxide system networking address-lot create
error: the following required arguments were not provided:
  --description <description>
  --kind <kind>
  --name <name>

$ ./target/debug/oxide system networking address-lot block add
error: the following required arguments were not provided:
  --address-lot <address-lot>
  --first-address <first-address>
  --last-address <last-address>

Usage: oxide system networking address-lot block add --address-lot <address-lot> --first-address <first-address> --last-address <last-address>

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ahl commented Jul 17, 2024

well that's good news!

@internet-diglett
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Local testing against a running control plane:

$ ./target/debug/oxide system networking address-lot list
[
  {
    "description": "initial infrastructure ip address lot",
    "id": "4d2fc8ca-8759-46e4-9c36-7e9bbd14ecc1",
    "kind": "infra",
    "name": "initial-infra",
    "time_created": "2024-07-17T21:39:29.384680Z",
    "time_modified": "2024-07-17T21:39:29.384680Z"
  }
]

$ ./target/debug/oxide system networking address-lot block list --address-lot initial-infra
[
  {
    "first_address": "10.85.0.30",
    "id": "60efc85a-34d0-4e07-b3e2-c11f203e054d",
    "last_address": "10.85.0.30"
  }
]

$ ./target/debug/oxide system networking address-lot block add \
--address-lot initial-infra \
--first-address 10.100.0.0 \
--last-address 10.100.0.255
{
  "first_address": "10.100.0.0",
  "id": "5eff580c-9e96-4c01-a580-b9c782bc4196",
  "last_address": "10.100.0.255"
}

$ ./target/debug/oxide system networking address-lot block list --address-lot initial-infra
[
  {
    "first_address": "10.100.0.0",
    "id": "5eff580c-9e96-4c01-a580-b9c782bc4196",
    "last_address": "10.100.0.255"
  }, {
    "first_address": "10.85.0.30",
    "id": "60efc85a-34d0-4e07-b3e2-c11f203e054d",
    "last_address": "10.85.0.30"
  }
]

$ ./target/debug/oxide system networking address-lot block remove \
--address-lot initial-infra \
--first-address 10.100.0.0 \
--last-address 10.100.0.255

$ ./target/debug/oxide system networking address-lot block list --address-lot initial-infra
[
  {
    "first_address": "10.85.0.30",
    "id": "60efc85a-34d0-4e07-b3e2-c11f203e054d",
    "last_address": "10.85.0.30"
  }
]

@internet-diglett internet-diglett marked this pull request as ready for review July 17, 2024 22:34
@internet-diglett internet-diglett changed the title Refactor Address Lot APIs Refactor Network Operator APIs Aug 19, 2024
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I think we will need to un-nest the communities and import / export policies if we want to be able to add peers without using --json-body.

@david-crespo
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While you're messing with these APIs... #6497

@rcgoodfellow rcgoodfellow added this to the 11 milestone Sep 6, 2024
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Thanks for all the work here Levon! I spent some time reading over this; I really like the more granular updates we can have over switch port configuration. I've left some comments throughout.

common/src/api/external/mod.rs Outdated Show resolved Hide resolved
nexus/types/src/external_api/params.rs Show resolved Hide resolved
nexus/db-queries/src/db/datastore/address_lot.rs Outdated Show resolved Hide resolved
Comment on lines +688 to +703
let port_settings_id =
switch_port_configuration_id(&conn, identity).await?;

let port_config = SwitchPortConfig {
port_settings_id,
geometry: new_geometry,
};

// create or update geometry
diesel::insert_into(dsl::switch_port_settings_port_config)
.values(port_config.clone())
.on_conflict(dsl::port_settings_id)
.do_update()
.set(dsl::geometry.eq(new_geometry))
.execute_async(&conn)
.await?;
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I think this ID check -> use pattern is safe, given that CRDB works with transations set as SERIALIZABLE. I'd have to defer to someone with more knowledge there though!

nexus/db-queries/src/db/datastore/switch_port.rs Outdated Show resolved Hide resolved
Comment on lines +1533 to +1554
NameOrId::Id(id) => {
// verify id is valid
bgp_config::table
.filter(bgp_config::time_deleted.is_null())
.filter(bgp_config::id.eq(id))
.select(bgp_config::id)
.limit(1)
.first_async::<Uuid>(&conn)
.await
.map_err(|e: diesel::result::Error| {
match e {
diesel::result::Error::NotFound => {
err.bail(Error::not_found_by_id(ResourceType::BgpConfig, &id))
},
_ => {
let message = "error while looking up bgp config for bgp peer";
error!(opctx.log, "{message}"; "error" => ?e);
err.bail(Error::internal_error(message))
},
}
})
},
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Should most of the linked config elements here have a lookup_resource! definition? That doesn't give us LookupPath on a conn, but...

I'm also starting to wonder about the NameOrId resolution within each transaction -- I think that resolving to an ID should still occur only once outside the transaction, and then we {use, fetch, check liveness of} the target resource by ID as part of the transaction. I don't see a way that these transactions can cause a retry today, but if that changes I imagine you could hypothetically be working on renamed resources.

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Do we allow renaming of resources today? It is my understanding that Name and ID are not changeable.

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@FelixMcFelix FelixMcFelix Oct 20, 2024

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ID is immutable, yeah -- I had meant to select the NameOrId::Name match branch at the time.

My thinking is in case an update endpoint does crop up in future -- e.g., not all project scoped resources have update endpoints, but the resource name is almost always mutable when such an endpoint exists.

nexus/src/external_api/http_entrypoints.rs Outdated Show resolved Hide resolved
nexus/types/src/external_api/params.rs Outdated Show resolved Hide resolved
nexus/types/src/external_api/params.rs Outdated Show resolved Hide resolved
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See comments. I did a quick review for consistency, but did not go deep into the DB transactions.

common/src/api/external/mod.rs Outdated Show resolved Hide resolved
common/src/api/external/mod.rs Outdated Show resolved Hide resolved
nexus/db-queries/src/db/datastore/switch_port.rs Outdated Show resolved Hide resolved
nexus/db-queries/src/db/datastore/switch_port.rs Outdated Show resolved Hide resolved
keepalive: new_settings.keepalive.into(),
remote_asn: new_settings.remote_asn.map(Into::into),
min_ttl: new_settings.min_ttl.map(Into::into),
md5_auth_key: new_settings.md5_auth_key,
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Is a clone required?

Also check line 638.

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Apologies, I am unsure of what you are referring to?

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Oops, I should have noticed/clarified that line 638 was from a different file that has the same name but different directory: nexus/db-model/src/switch_port.rs:638

For example, nexus/db-queries/src/db/datastore/switch_port.rs:590 has code that looks like:

md5_auth_key: p.md5_auth_key.clone(),

I was raising the question of, for any line of code that has a style of md5_auth_key: xyz.md5_auth_key (includes this line here for this comment, and above other file line 638), whether to consider if it should actually be md5_auth_key: xyz.md5_auth_key.clone(), because I've seen usage of clone() for lines of code related to md5_auth_key in both the omicron and oxide.rs repositories in the past.
See:

This was part of my quick checking for consistency throughout the code that I looked at.

nexus/types/src/external_api/params.rs Outdated Show resolved Hide resolved
nexus/types/src/external_api/params.rs Outdated Show resolved Hide resolved
nexus/types/src/external_api/params.rs Outdated Show resolved Hide resolved
nexus/types/src/external_api/params.rs Outdated Show resolved Hide resolved
nexus/types/src/external_api/params.rs Outdated Show resolved Hide resolved
@internet-diglett
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Many thanks for the reviews, going to chip away at these fixes!

@rcgoodfellow rcgoodfellow modified the milestones: 11, 12 Sep 26, 2024
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