Commit Graph

32 Commits

Author SHA1 Message Date
Conrad Ludgate
67b94c5992 [proxy] per endpoint configuration for rate limits (#12148)
https://github.com/neondatabase/cloud/issues/28333

Adds a new `rate_limit` response type to EndpointAccessControl, uses it
for rate limiting, and adds a generic invalidation for the cache.
2025-06-10 14:26:08 +00:00
Folke Behrens
e38193c530 proxy: Move connect_to_compute back to proxy (#12181)
It's mostly responsible for waking, retrying, and caching. A new, thin
wrapper around compute_once will be PGLB's entry point
2025-06-10 11:23:03 +00:00
Conrad Ludgate
58327ef74d [proxy] fix sql-over-http password setting (#12177)
## Problem

Looks like our sql-over-http tests get to rely on "trust"
authentication, so the path that made sure the authkeys data was set was
never being hit.

## Summary of changes

Slight refactor to WakeComputeBackends, as well as making sure auth keys
are propagated. Fix tests to ensure passwords are tested.
2025-06-10 08:46:29 +00:00
Conrad Ludgate
4d99b6ff4d [proxy] separate compute connect from compute authentication (#12145)
## Problem

PGLB/Neonkeeper needs to separate the concerns of connecting to compute,
and authenticating to compute.

Additionally, the code within `connect_to_compute` is rather messy,
spending effort on recovering the authentication info after
wake_compute.

## Summary of changes

Split `ConnCfg` into `ConnectInfo` and `AuthInfo`. `wake_compute` only
returns `ConnectInfo` and `AuthInfo` is determined separately from the
`handshake`/`authenticate` process.

Additionally, `ConnectInfo::connect_raw` is in-charge or establishing
the TLS connection, and the `postgres_client::Config::connect_raw` is
configured to use `NoTls` which will force it to skip the TLS
negotiation. This should just work.
2025-06-06 10:29:55 +00:00
Folke Behrens
1577665c20 proxy: Move PGLB-related modules into pglb root module. (#12144)
Split the modules responsible for passing data and connecting to compute
from auth and waking for PGLB.
This PR just moves files. The waking is going to get removed from pglb
after this.
2025-06-05 11:00:23 +00:00
Conrad Ludgate
589bfdfd02 proxy: Changes to rate limits and GetEndpointAccessControl caches. (#12048)
Precursor to https://github.com/neondatabase/cloud/issues/28333.

We want per-endpoint configuration for rate limits, which will be
distributed via the `GetEndpointAccessControl` API. This lays some of
the ground work.

1. Allow the endpoint rate limiter to accept a custom leaky bucket
config on check.
2. Remove the unused auth rate limiter, as I don't want to think about
how it fits into this.
3. Refactor the caching of `GetEndpointAccessControl`, as it adds
friction for adding new cached data to the API.

That third one was rather large. I couldn't find any way to split it up.
The core idea is that there's now only 2 cache APIs.
`get_endpoint_access_controls` and `get_role_access_controls`.

I'm pretty sure the behaviour is unchanged, except I did a drive by
change to fix #8989 because it felt harmless. The change in question is
that when a password validation fails, we eagerly expire the role cache
if the role was cached for 5 minutes. This is to allow for edge cases
where a user tries to connect with a reset password, but the cache never
expires the entry due to some redis related quirk (lag, or
misconfiguration, or cplane error)
2025-06-02 08:38:35 +00:00
Conrad Ludgate
87179e26b3 completely rewrite pq_proto (#12085)
libs/pqproto is designed for safekeeper/pageserver with maximum
throughput.

proxy only needs it for handshakes/authentication where throughput is
not a concern but memory efficiency is. For this reason, we switch to
using read_exact and only allocating as much memory as we need to.

All reads return a `&'a [u8]` instead of a `Bytes` because accidental
sharing of bytes can cause fragmentation. Returning the reference
enforces all callers only hold onto the bytes they absolutely need. For
example, before this change, `pqproto` was allocating 8KiB for the
initial read `BytesMut`, and proxy was holding the `Bytes` in the
`StartupMessageParams` for the entire connection through to passthrough.
2025-06-01 18:41:45 +00:00
Peter Bendel
f9fdbc9618 remove auth_endpoint password from log and command line for local proxy mode (#11991)
## Problem

When testing local proxy the auth-endpoint password shows up in command
line and log

```bash
RUST_LOG=proxy LOGFMT=text cargo run --release --package proxy --bin proxy --features testing -- \
  --auth-backend postgres \
  --auth-endpoint 'postgresql://postgres:secret_password@127.0.0.1:5432/postgres' \
  --tls-cert server.crt \
  --tls-key server.key \
  --wss 0.0.0.0:4444
```

## Summary of changes

- Allow to set env variable PGPASSWORD
- fall back to use PGPASSWORD env variable when auth-endpoint does not
contain password
- remove auth-endpoint password from logs in `--features testing` mode

Example

```bash
export PGPASSWORD=secret_password

RUST_LOG=proxy LOGFMT=text cargo run --package proxy --bin proxy --features testing -- \
  --auth-backend postgres \
  --auth-endpoint 'postgresql://postgres@127.0.0.1:5432/postgres' \
  --tls-cert server.crt \
  --tls-key server.key \
  --wss 0.0.0.0:4444 
```
2025-05-21 20:26:05 +00:00
Arpad Müller
fdde58120c Upgrade proxy crates to edition 2024 (#10942)
This upgrades the `proxy/` crate as well as the forked libraries in
`libs/proxy/` to edition 2024.

Also reformats the imports of those forked libraries via:

```
cargo +nightly fmt -p proxy -p postgres-protocol2 -p postgres-types2 -p tokio-postgres2 -- -l --config imports_granularity=Module,group_imports=StdExternalCrate,reorder_imports=true
```

It can be read commit-by-commit: the first commit has no formatting
changes, only changes to accomodate the new edition.

Part of #10918
2025-02-24 15:26:28 +00:00
Conrad Ludgate
fb77f28326 feat(proxy): add direction and private link id to billing export (#10925)
ref: https://github.com/neondatabase/cloud/issues/23385

Adds a direction flag as well as private-link ID to the traffic
reporting pipeline. We do not yet actually count ingress, but we include
the flag anyway.

I have additionally moved vpce_id string parsing earlier, since we
expect it to be utf8 (ascii).
2025-02-24 11:49:11 +00:00
Ivan Efremov
73633e27ed fix(proxy): Log errors from the local proxy in auth-broker (#10659)
Handle errors from local proxy by parsing HTTP response in auth broker
code

Closes [#19476](https://github.com/neondatabase/cloud/issues/19476)
2025-02-10 16:06:13 +00:00
Stefan Radig
6dd48ba148 feat(proxy): Implement access control with VPC endpoint checks and block for public internet / VPC (#10143)
- Wired up filtering on VPC endpoints
- Wired up block access from public internet / VPC depending on per
project flag
- Added cache invalidation for VPC endpoints (partially based on PR from
Raphael)
- Removed BackendIpAllowlist trait

---------

Co-authored-by: Ivan Efremov <ivan@neon.tech>
2025-01-31 20:32:57 +00:00
Ivan Efremov
222cc181e9 impr(proxy): Move the CancelMap to Redis hashes (#10364)
## Problem
The approach of having CancelMap as an in-memory structure increases
code complexity,
as well as putting additional load for Redis streams.

## Summary of changes
- Implement a set of KV ops for Redis client;
- Remove cancel notifications code;
- Send KV ops over the bounded channel to the handling background task
for removing and adding the cancel keys.


Closes #9660
2025-01-29 11:19:10 +00:00
Ivan Efremov
fcfff72454 impr(proxy): Decouple ip_allowlist from the CancelClosure (#10199)
This PR removes the direct dependency of the IP allowlist from
CancelClosure, allowing for more scalable and flexible IP restrictions
and enabling the future use of Redis-based CancelMap storage.

Changes:
- Introduce a new BackendAuth async trait that retrieves the IP
allowlist through existing authentication methods;
- Improve cancellation error handling by instrument() async
cancel_sesion() rather than dropping it.
- Set and store IP allowlist for SCRAM Proxy to consistently perform IP
allowance check
 
 Relates to #9660
2025-01-08 19:34:53 +00:00
Folke Behrens
b135194090 proxy: Delay SASL complete message until auth is done (#10189)
The final SASL complete message can be bundled with the remainder of the
auth flow messages until ReadyForQuery.

neondatabase/cloud#19184
2024-12-19 10:37:08 +00:00
Conrad Ludgate
59b7ff8988 chore(proxy): disallow unwrap and unimplemented (#10142)
As the title says, I updated the lint rules to no longer allow unwrap or
unimplemented.

Three special cases:
* Tests are allowed to use them
* std::sync::Mutex lock().unwrap() is common because it's usually
correct to continue panicking on poison
* `tokio::spawn_blocking(...).await.unwrap()` is common because it will
only error if the blocking fn panics, so continuing the panic is also
correct

I've introduced two extension traits to help with these last two, that
are a bit more explicit so they don't need an expect message every time.
2024-12-16 16:37:15 +00:00
Conrad Ludgate
e502e880b5 chore(proxy): remove code for old API (#10109)
## Problem

Now that https://github.com/neondatabase/cloud/issues/15245 is done, we
can remove the old code.

## Summary of changes

Removes support for the ManagementV2 API, in favour of the ProxyV1 API.
2024-12-12 13:42:50 +00:00
Ivan Efremov
ffc9c33eb2 proxy: Present new auth backend cplane_proxy_v1 (#10012)
Implement a new auth backend based on the current Neon backend to switch
to the new Proxy V1 cplane API.

Implements [#21048](https://github.com/neondatabase/cloud/issues/21048)
2024-12-05 05:30:38 +00:00
Conrad Ludgate
27a42d0f96 chore(proxy): remove postgres config parser and md5 support (#9990)
Keeping the `mock` postgres cplane adaptor using "stock" tokio-postgres
allows us to remove a lot of dead weight from our actual postgres
connection logic.
2024-12-03 18:39:23 +00:00
Ivan Efremov
3b1ac8b14a proxy: Implement cancellation rate limiting (#9739)
Implement cancellation rate limiting and ip allowlist checks. Add
ip_allowlist to the cancel closure

Fixes [#16456](https://github.com/neondatabase/cloud/issues/16456)
2024-11-22 16:46:38 +00:00
Folke Behrens
bf7d859a8b proxy: Rename RequestMonitoring to RequestContext (#9805)
## Problem

It is called context/ctx everywhere and the Monitoring suffix needlessly
confuses with proper monitoring code.

## Summary of changes

* Rename RequestMonitoring to RequestContext
* Rename RequestMonitoringInner to RequestContextInner
2024-11-20 12:50:36 +00:00
Conrad Ludgate
3ae0b2149e chore(proxy): demote a ton of logs for successful connection attempts (#9803)
See https://github.com/neondatabase/cloud/issues/14378

In collaboration with @cloneable and @awarus, we sifted through logs and
simply demoted some logs to debug. This is not at all finished and there
are more logs to review, but we ran out of time in the session we
organised. In any slightly more nuanced cases, we didn't touch the log,
instead leaving a TODO comment.
2024-11-20 10:14:28 +00:00
Folke Behrens
bdd492b1d8 proxy: Replace "web(auth)" with "console redirect" everywhere (#9655) 2024-11-06 11:03:38 +00:00
Folke Behrens
ebc43efebc proxy: Refactor cplane types (#9643)
The overall idea of the PR is to rename a few types to make their
purpose more clear, reduce abstraction where not needed, and move types
to to more better suited modules.
2024-11-05 23:03:53 +01:00
Folke Behrens
59879985b4 proxy: Wrap JWT errors in separate AuthError variant (#9625)
* Also rename `AuthFailed` variant to `PasswordFailed`.
* Before this all JWT errors end up in `AuthError::AuthFailed()`,
  expects a username and also causes cache invalidation.
2024-11-04 19:56:40 +01:00
Folke Behrens
92d5e0e87a proxy: clear lib.rs of code items (#9479)
We keep lib.rs for crate configs, lint configs and re-exports for the binaries.
2024-10-23 08:21:28 +02:00
Folke Behrens
f14e45f0ce proxy: format imports with nightly rustfmt (#9414)
```shell
cargo +nightly fmt -p proxy -- -l --config imports_granularity=Module,group_imports=StdExternalCrate,reorder_imports=true
```

These rust-analyzer settings for VSCode should help retain this style:
```json
  "rust-analyzer.imports.group.enable": true,
  "rust-analyzer.imports.prefix": "crate",
  "rust-analyzer.imports.merge.glob": false,
  "rust-analyzer.imports.granularity.group": "module",
  "rust-analyzer.imports.granularity.enforce": true,
```
2024-10-16 15:01:56 +02:00
Folke Behrens
fb74c21e8c proxy: Migrate jwt module away from anyhow (#9361) 2024-10-15 15:24:56 +02:00
Conrad Ludgate
cb9ab7463c proxy: split out the console-redirect backend flow (#9270)
removes the ConsoleRedirect backend from the main auth::Backends enum,
copy-paste the existing crate::proxy::task_main structure to use the
ConsoleRedirectBackend exclusively.

This makes the logic a bit simpler at the cost of some fairly trivial
code duplication.
2024-10-14 12:25:55 +02:00
Conrad Ludgate
ab5bbb445b proxy: refactor auth backends (#9271)
preliminary for #9270 

The auth::Backend didn't need to be in the mega ProxyConfig object, so I
split it off and passed it manually in the few places it was necessary.

I've also refined some of the uses of config I saw while doing this
small refactor.

I've also followed the trend and make the console redirect backend it's
own struct, same as LocalBackend and ControlPlaneBackend.
2024-10-11 20:14:52 +01:00
Conrad Ludgate
75434060a5 local_proxy: integrate with pg_session_jwt extension (#9086) 2024-10-09 18:24:10 +01:00
Folke Behrens
ad267d849f proxy: Move module base files into module directory (#9297) 2024-10-07 16:25:34 +02:00