stack: Make failfast::Gate general purpose
#2279
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
`failfast::Gate` is a stack middleware that supports changing its readiness based on some external signal (the failfast state changing). Nothing about the gate's behavior is specific to failfast, though; and this type of gating is general useful on its own. To setup further reuse, this change moves `stack::failfast::gate` to `stack::gate`. The gate is now tested independently from failfast. Failfast continues to maintain an (optional) `gate::Tx` so that it can control a gate.
hawkw
reviewed
Feb 28, 2023
Comment on lines
+74
to
+81
| impl Drop for Rx { | ||
| fn drop(&mut self) { | ||
| let Rx(_, handle) = self; | ||
| if Arc::strong_count(handle) == 1 { | ||
| self.0.closed.notify_waiters(); | ||
| } | ||
| } | ||
| } |
There was a problem hiding this comment.
take it or leave it: it occurrs to me that if, rather than two Notifys and an Arc<()>, we used a single watch<bool> channel we could get this behavior for free --- to notify the gate, a sender would send a true or false to indicate closure, and when all the senders are dropped, the watch receiver's closed future would complete.
i think the current approach works, too, but we could maybe simplify the implementation a bit this way?
There was a problem hiding this comment.
watch::Sender isn't Clone. Our Tx is.
olix0r
added a commit
to linkerd/linkerd2
that referenced
this pull request
Mar 1, 2023
Revert inbound policy discovery behavior changes (from v2.191.0) and update dependencies, especially h2. --- * Revert inbound policy discovery changes (linkerd/linkerd2-proxy#2267) * Bump v38 to v39 (linkerd/linkerd2-proxy#2269) * dev: override CXX for rust-analyzer (linkerd/linkerd2-proxy#2270) * build(deps): bump syn from 1.0.107 to 1.0.109 (linkerd/linkerd2-proxy#2274) * build(deps): bump tokio-util from 0.7.4 to 0.7.7 (linkerd/linkerd2-proxy#2272) * build(deps): bump tj-actions/changed-files from 35.5.6 to 35.6.0 (linkerd/linkerd2-proxy#2271) * build(deps): bump prost-build from 0.11.6 to 0.11.8 (linkerd/linkerd2-proxy#2273) * ci: Add a linkerd install workflow (linkerd/linkerd2-proxy#2268) * allow `opaque_hidden_inferred_bound` warning on nightly (linkerd/linkerd2-proxy#2275) * build(deps): bump h2 from 0.3.15 to 0.3.16 (linkerd/linkerd2-proxy#2278) * build(deps): bump tempfile from 3.3.0 to 3.4.0 (linkerd/linkerd2-proxy#2277) * build(deps): bump tokio-stream from 0.1.11 to 0.1.12 (linkerd/linkerd2-proxy#2276) * stack: Make `failfast::Gate` general purpose (linkerd/linkerd2-proxy#2279) * build(deps): bump slab from 0.4.7 to 0.4.8 (linkerd/linkerd2-proxy#2283) * build(deps): bump async-stream from 0.3.3 to 0.3.4 (linkerd/linkerd2-proxy#2282) * build(deps): bump jobserver from 0.1.25 to 0.1.26 (linkerd/linkerd2-proxy#2281) * build(deps): bump tj-actions/changed-files from 35.6.0 to 35.6.1 (linkerd/linkerd2-proxy#2280) Signed-off-by: Oliver Gould <ver@buoyant.io>
olix0r
added a commit
to linkerd/linkerd2
that referenced
this pull request
Mar 1, 2023
* proxy: v2.191.0 This release updates the proxy to require control-plane-discovered policies for all inbound connections. Previously, the proxy would use a locally-configured default policy while it synced policies from the control plane. --- * trace: never log access log spans to stdout (linkerd/linkerd2-proxy#2244) * build(deps): bump thread_local from 1.1.4 to 1.1.7 (linkerd/linkerd2-proxy#2243) * build(deps): bump tj-actions/changed-files from 35.5.4 to 35.5.5 (linkerd/linkerd2-proxy#2242) * build(deps): bump serde_json from 1.0.91 to 1.0.93 (linkerd/linkerd2-proxy#2217) * dev: Remove docker config mount (linkerd/linkerd2-proxy#2246) * build(deps): bump anyhow from 1.0.68 to 1.0.69 (linkerd/linkerd2-proxy#2216) * build(deps): bump actions/checkout from 3.2.0 to 3.3.0 (linkerd/linkerd2-proxy#2130) * http: Use `ExtractParam` in `NewNormalizeUri` (linkerd/linkerd2-proxy#2245) * http: Replace `classify::CanClassify` with `Param` (linkerd/linkerd2-proxy#2247) * http: Improve timeout module (linkerd/linkerd2-proxy#2248) * outbound: Decouple outbound HTTP server from logical target (linkerd/linkerd2-proxy#2249) * build(deps): bump http from 0.2.8 to 0.2.9 (linkerd/linkerd2-proxy#2253) * build(deps): bump fastrand from 1.8.0 to 1.9.0 (linkerd/linkerd2-proxy#2252) * build(deps): bump signal-hook-registry from 1.4.0 to 1.4.1 (linkerd/linkerd2-proxy#2254) * Use `ExtractParam` in `http::NewHeaderFromTarget` (linkerd/linkerd2-proxy#2255) * outbound: Introduce a new outbound-route watch type (linkerd/linkerd2-proxy#2250) * build(deps): bump tj-actions/changed-files from 35.5.5 to 35.5.6 (linkerd/linkerd2-proxy#2256) * build(deps): bump hyper from 0.14.23 to 0.14.24 (linkerd/linkerd2-proxy#2257) * build(deps): bump once_cell from 1.17.0 to 1.17.1 (linkerd/linkerd2-proxy#2258) * build(deps): bump clang-sys from 1.4.0 to 1.6.0 (linkerd/linkerd2-proxy#2259) * outbound: Add a policy router (linkerd/linkerd2-proxy#2251) * inbound: connections wait for ServerPolicy discovery (linkerd/linkerd2-proxy#2186) * inbound: Remove default policies (linkerd/linkerd2-proxy#2204) * inbound: Introduce a `policy::LookupAddr` type (linkerd/linkerd2-proxy#2264) * build(deps): bump futures from 0.3.25 to 0.3.26 (linkerd/linkerd2-proxy#2263) * build(deps): bump proc-macro2 from 1.0.50 to 1.0.51 (linkerd/linkerd2-proxy#2261) * build(deps): bump tinyvec_macros from 0.1.0 to 0.1.1 (linkerd/linkerd2-proxy#2262) Signed-off-by: Oliver Gould <ver@buoyant.io> * proxy: v2.191.2 Revert inbound policy discovery behavior changes (from v2.191.0) and update dependencies, especially h2. --- * Revert inbound policy discovery changes (linkerd/linkerd2-proxy#2267) * Bump v38 to v39 (linkerd/linkerd2-proxy#2269) * dev: override CXX for rust-analyzer (linkerd/linkerd2-proxy#2270) * build(deps): bump syn from 1.0.107 to 1.0.109 (linkerd/linkerd2-proxy#2274) * build(deps): bump tokio-util from 0.7.4 to 0.7.7 (linkerd/linkerd2-proxy#2272) * build(deps): bump tj-actions/changed-files from 35.5.6 to 35.6.0 (linkerd/linkerd2-proxy#2271) * build(deps): bump prost-build from 0.11.6 to 0.11.8 (linkerd/linkerd2-proxy#2273) * ci: Add a linkerd install workflow (linkerd/linkerd2-proxy#2268) * allow `opaque_hidden_inferred_bound` warning on nightly (linkerd/linkerd2-proxy#2275) * build(deps): bump h2 from 0.3.15 to 0.3.16 (linkerd/linkerd2-proxy#2278) * build(deps): bump tempfile from 3.3.0 to 3.4.0 (linkerd/linkerd2-proxy#2277) * build(deps): bump tokio-stream from 0.1.11 to 0.1.12 (linkerd/linkerd2-proxy#2276) * stack: Make `failfast::Gate` general purpose (linkerd/linkerd2-proxy#2279) * build(deps): bump slab from 0.4.7 to 0.4.8 (linkerd/linkerd2-proxy#2283) * build(deps): bump async-stream from 0.3.3 to 0.3.4 (linkerd/linkerd2-proxy#2282) * build(deps): bump jobserver from 0.1.25 to 0.1.26 (linkerd/linkerd2-proxy#2281) * build(deps): bump tj-actions/changed-files from 35.6.0 to 35.6.1 (linkerd/linkerd2-proxy#2280) Signed-off-by: Oliver Gould <ver@buoyant.io> --------- Signed-off-by: Oliver Gould <ver@buoyant.io>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
failfast::Gateis a stack middleware that supports changing its readiness based on some external signal (the failfast state changing). Nothing about the gate's behavior is specific to failfast, though; and this type of gating is general useful on its own.To setup further reuse, this change moves
stack::failfast::gatetostack::gate. The gate is now tested independently from failfast. Failfast continues to maintain an (optional)gate::Txso that it can control a gate.