Changelog
List of aperture PRs merged since 2.4.0 release. For the full list of changes, see [list of changes][changes]
Filter out high cardinality platform metrics (2159)
To decrease load on Prometheus in large scale this makes pushing high cardinality platform metrics optional.
Add Retry-After header when Rate Limiter rejects flow (2156)
Every limiter now optionally returns recommended wait time when
rejecting the flow (this is implemented only for Rate Limiters for now).
Maximum wait time reported by limiters is stored as a (new) WaitTime
field in CheckResponse.
Envoy Authorization and CheckHttp services translate this wait time into
Retry-After header. So all http integrations should have support for
this new header with no further changes.
Note: This works in practice only with global token bucket ratelimiter,
lazy sync ratelimiter usually doesn't report wait time.
Resolves 2056
Simplify scheduler priority and remove fairness key (2142)
Description of change
**New Feature:**
- Simplified scheduler priority by removing fairness key and changing
priority level to an unbounded positive integer
- Introduced `workload` struct to hold workload information, including
inverse priority
- Updated `Scheduler` struct with a `defaultWorkload` field
- Modified `Decide` function to use inverse priority of matched workload
**Refactor:**
- Added new package `utils` with LCM and GCD functions for uint64 arrays
and pairs
**Documentation:**
- Updated flowcontrol.proto and spec.md to reflect changes in scheduler
priority and removal of fairness key
> 🎉 A simpler way to prioritize,
> With fairness key now gone,
> Inverse priority we utilize,
> As our scheduler marches on! 🚀
Remove default kubelet scraper (2151)
We don't want to collect any metrics which are not directly needed by a policy.
Normalized priorities (2127)
Description of change
**New Feature:**
- Added new metrics and counters for incoming and accepted token rate
- Introduced `Request` struct to manage request metadata in controlled
delay and queue limits
- Implemented `SetLoadDecisionValues` function to set load multiplier
based on input value
> 🎉 A new dawn for metrics we see,
> Counters and tokens, they dance with glee.
> Requests now structured, decisions made clear,
> Load multipliers set, as we cheer! 🚀
Rename Regulator to Sampler (2140)
Description of change
<img width="1624" alt="Screenshot 2023-06-12 at 10 39 32 AM"
src="https://github.com/fluxninja/aperture/assets/1553055/f0977e55-fdfd-48fd-bf31-bb88b61c8248">
**Refactor:**
- Renamed `RegulatorInfo` to `SamplerInfo` in protobuf messages
- Renamed `Regulator` component to `Sampler` throughout the codebase
**Documentation:**
- Updated all references and documentation related to the renaming of
the `Regulator` component to `Sampler` in Aperture
> 🎉 Sampler's here, Regulator's gone,
> A new era, a fresh dawn! 🌅
> With clarity we stride ahead,
> Embracing change, no fear or dread. 😄
add blueprint dashboard for the components (2067)
Description of change
Adding dashboards for components in dashboards directory
Remove `--keep-spec-order` and update deps (2123)
**Refactor:**
- Removed `--keep-spec-order` flag and updated dependencies
- Changed command to flatten OpenAPI spec file from YAML to JSON and
back to YAML
- Updated `swagger generate markdown` command to use the updated YAML
file
- Removed intermediate JSON file
> 🎉 A change so smooth, a refactor so fine,
> Flattening specs, in a new design.
> Dependencies updated, commands refined,
> A PR like this, truly one of a kind! 🚀
rename envoy category to istio (2124)
Fixed the destination service name issue in gateways integration (2125)
Nginx:
Kong:
**New Feature:**
- Added integration documentation for Aperture with Gateways
**Bug fix:**
- Fixed issues with destination service name in gateways integration
- Simplified server address and port logic
- Updated plugin's configuration schema
**Refactor:**
- Removed unused imports and variables in gateways integration
- Replaced `destination_hostname` and `destination_port` with hardcoded
values
> 🎉 A gateway shines, the traffic flows,
> Integrations fixed, our confidence grows.
> Unused code gone, simplicity shows,
> With each update, our software glows! 🌟
---------
Co-authored-by: Hasit Mistry <hasitfluxninja.com>
remove top level flow control hierarchy (2121)
[changes]: https://github.com/fluxninja/aperture/compare/releases/aperture-controller/v2.4.0...releases/aperture-controller/v2.5.0-rc.2