Prior to this PR for the envoy xDS golden tests in the agent/xds package we
were hand-creating a proxycfg.ConfigSnapshot structure in the proper format for
input to the xDS generator. Over time this intermediate structure has gotten
trickier to build correctly for the various tests.
This PR proposes to switch to using the existing mechanism for turning a
structs.NodeService and a sequence of cache.UpdateEvent copies into a
proxycfg.ConfigSnapshot, as that is less error prone to construct and aligns
more with how the data arrives.
NOTE: almost all of this is in test-related code. I tried super hard to craft
correct event inputs to get the golden files to be the same, or similar enough
after construction to feel ok that i recreated the spirit of the original test
cases.
Builds on attach-shadow, adopt-styles and ShadowTemplate, this commit adds ShadowHost and finally CustomElement.
CustomElement is a renderless component to help with the creation of native HTML Custom Elements along with runtime type checking and self-documentation for attributes, slots, cssprops and cssparts. As you will probably see there is a little more work to come here. But in the same breath, everything would be fine to go in as is.
Improves tests from #12362
These tests try to setup the following concurrent scenario:
1. (goroutine 1) execute read RPC with index=0
2. (goroutine 1) get response from (1) @ index=10
3. (goroutine 1) execute read RPC with index=10 and block
4. (goroutine 2) WHILE (3) is blocking, start slamming the system with stray writes that will cause the WatchSet to wakeup
5. (goroutine 2) after doing all writes, shut down the reader above
6. (goroutine 1) stops reading, double checks that it only ever woke up once (from 1)
* Update Kubernetes related YAML config examples to document supported
syntax in the latest version of the Helm chart.
* Fix syntax in JSON example configs.
Resolves#12403
Co-authored-by: mrspanishviking <kcardenas@hashicorp.com>
Minor fix for behavior in #12362
IsDefault sometimes returns true even if there was a proxy-defaults or service-defaults config entry that was consulted. This PR fixes that.
Recently there have been a handful of GitHub issues and Discuss posts
where users have expected the `consul` CLI to make use of config
options defined in the agent configuration files, and are confused
when it does not honor those config options.
This change clarifies that command-line and configuration file options
documented on the /agent/options page only apply to the Consul agent,
instead of the Consul CLI.
before:
$ go test ./agent/consul -run TestLeader_ReapOrLeftMember_IgnoreSelf
ok github.com/hashicorp/consul/agent/consul 21.147s
after:
$ go test ./agent/consul -run TestLeader_ReapOrLeftMember_IgnoreSelf
ok github.com/hashicorp/consul/agent/consul 5.402s
Previously we were using two different criteria to decide where to run a
test. The main `go-test` job would skip Vault tests based on the
presence of the `vault` binary, but the `test-connect-ca-providers` job
would run tests based on the name.
This led to a scenario where a test may never run in CI.
To fix this problem I added a name check to the function we use to skip
the test. This should ensure that any test that requires vault is named
correctly to be run as part of the `test-connect-ca-providers` job.
At the same time I relaxed the regex we use. I verified this runs the
same tests using `go test --list Vault`. I made this change because a
bunch of tests in `agent/connect/ca` used `Vault` in the name, without
the underscores. Instead of changing a bunch of test names, this seemed
easier.
With this approach, the worst case is that we run a few extra tests in
the `test-connect-ca-providers` job, which doesn't seem like a problem.
Starting from and extending the mechanism introduced in #12110 we can specially handle the 3 main special Consul RPC endpoints that react to many config entries in a single blocking query in Connect:
- `DiscoveryChain.Get`
- `ConfigEntry.ResolveServiceConfig`
- `Intentions.Match`
All of these will internally watch for many config entries, and at least one of those will likely be not found in any given query. Because these are blends of multiple reads the exact solution from #12110 isn't perfectly aligned, but we can tweak the approach slightly and regain the utility of that mechanism.
### No Config Entries Found
In this case, despite looking for many config entries none may be found at all. Unlike #12110 in this scenario we do not return an empty reply to the caller, but instead synthesize a struct from default values to return. This can be handled nearly identically to #12110 with the first 1-2 replies being non-empty payloads followed by the standard spurious wakeup suppression mechanism from #12110.
### No Change Since Last Wakeup
Once a blocking query loop on the server has completed and slept at least once, there is a further optimization we can make here to detect if any of the config entries that were present at specific versions for the prior execution of the loop are identical for the loop we just woke up for. In that scenario we can return a slightly different internal sentinel error and basically externally handle it similar to #12110.
This would mean that even if 20 discovery chain read RPC handling goroutines wakeup due to the creation of an unrelated config entry, the only ones that will terminate and reply with a blob of data are those that genuinely have new data to report.
### Extra Endpoints
Since this pattern is pretty reusable, other key config-entry-adjacent endpoints used by `agent/proxycfg` also were updated:
- `ConfigEntry.List`
- `Internal.IntentionUpstreams` (tproxy)
This adds a new component blueprint for all our components. We've been
using README.mdx files for quite some time to document our components
for other engineers. This adds a default file to help new engineers get
started writing useful documentation. These README.mdx file are also
very useful for building out components in isolation from scratch and
and some point will be used to run automated component testing.
