This is the OSS portion of enterprise PR 2339.
It improves our handling of "irrecoverable" errors in proxycfg data sources.
The canonical example of this is what happens when the ACL token presented by
Envoy is deleted/revoked. Previously, the stream would get "stuck" until the
xDS server re-checked the token (after 5 minutes) and terminated the stream.
Materializers would also sit burning resources retrying something that could
never succeed.
Now, it is possible for data sources to mark errors as "terminal" which causes
the xDS stream to be closed immediately. Similarly, the submatview.Store will
evict materializers when it observes they have encountered such an error.
This is the OSS portion of enterprise PR 2056.
This commit provides server-local implementations of the proxycfg.ConfigEntry
and proxycfg.ConfigEntryList interfaces, that source data from streaming events.
It makes use of the LocalMaterializer type introduced for peering replication,
adding the necessary support for authorization.
It also adds support for "wildcard" subscriptions (within a topic) to the event
publisher, as this is needed to fetch service-resolvers for all services when
configuring mesh gateways.
Currently, events will be emitted for just the ingress-gateway, service-resolver,
and mesh config entry types, as these are the only entries required by proxycfg
— the events will be emitted on topics named IngressGateway, ServiceResolver,
and MeshConfig topics respectively.
Though these events will only be consumed "locally" for now, they can also be
consumed via the gRPC endpoint (confirmed using grpcurl) so using them from
client agents should be a case of swapping the LocalMaterializer for an
RPCMaterializer.
* mogify needed pbcommon structs
* mogify needed pbconnect structs
* fix compilation errors and make config_translate_test pass
* add missing file
* remove redundant oss func declaration
* fix EnterpriseMeta to copy the right data for enterprise
* rename pbcommon package to pbcommongogo
* regenerate proto and mog files
* add missing mog files
* add pbcommon package
* pbcommon no mog
* fix enterprise meta code generation
* fix enterprise meta code generation (pbcommongogo)
* fix mog generation for gogo
* use `protoc-go-inject-tag` to inject tags
* rename proto package
* pbcommon no mog
* use `protoc-go-inject-tag` to inject tags
* add non gogo proto to make file
* fix proto get
When info.Timeout is 0, it should have no timeout. Previously it was using a 0 duration timeout
which caused it to return without waiting.
This bug was masked by using a timeout in the tests. Removing the timeout caused the tests to fail.
Previous getFromView would call view.Result when the result may not have been returned
(because the index is updated past the minIndex. This would allocate a slice and sort it
for no reason, because the values would never be returned.
Fix this by re-ordering the operations in getFromView.
The test changes in this commit were an attempt to cover the case where
an update is received but the index does not exceed the minIndex.
These tests can flake when we get a notification for an earlier event.
Retry the read from update channel a few times to make sure we get the
event we expect.
Split the TestStreamingClient into the two logical components the real
client uses. This allows us to test multiple clients properly.
Previously writing of ctx from multiple Subscribe calls was showing a
data race.
Once this was fixed a test started to fail because the request had to be
made with a greater index, so that the store.Get call did not return
immediately.
The idleTTL was being written and read concurrently. Instead move the idleTTL to a struct
field so that when one test patches the TTL it does not impact others.
The background goroutines for the store can outlive a test because context cancellation
is async.
Remove View.Result error return value, it was always nil, and seems like it will likely always remain nill
since it is simply reading a stored value.
Also replace some cache types with local types.
And only start expiration time when the last request ends. This makes tracking expiry simpler, and
ensures that no entry can be expired while there are active requests.
Daniel Upton