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gateway: discover client policies from the policy controller#2315

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hawkw merged 21 commits intomainfrom
eliza/gateway-policy
Mar 14, 2023
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gateway: discover client policies from the policy controller#2315
hawkw merged 21 commits intomainfrom
eliza/gateway-policy

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@hawkw hawkw commented Mar 13, 2023

Depends on #2314.

Currently, the gateway stack does not resolve client policies, and only
uses service profiles for client-side policy discovery. This branch
updates the gateway proxy to also perform client policy discovery,
similarly to the outbound proxy.

Because all outbound stacks, including the one constructed by the
gateway, will now discover client policies, the client policy Receiver
in the Discovery type, which is currently an Option, can now be made
non-optional. This simplifies some code a little bit and removes some
expects.

@hawkw hawkw requested a review from a team as a code owner March 13, 2023 21:06
@hawkw hawkw force-pushed the eliza/gateway-policy branch from b4b3c3f to 22e44c3 Compare March 14, 2023 16:17
Base automatically changed from eliza/mock-policy-resolver to main March 14, 2023 20:01
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looks good!

@hawkw hawkw force-pushed the eliza/gateway-policy branch from 22e44c3 to a4d8004 Compare March 14, 2023 20:38
@hawkw hawkw requested a review from olix0r March 14, 2023 20:47
@hawkw hawkw merged commit e04dffe into main Mar 14, 2023
@hawkw hawkw deleted the eliza/gateway-policy branch March 14, 2023 21:23
hawkw added a commit to linkerd/linkerd2 that referenced this pull request Mar 15, 2023
This proxy release changes the multicluster gateway to discover Gateway
API routes via the `OutboundPolicy` API. This builds on the similar
changes to the outbound proxy in v2.192.

---

* gateway: discover client policies from the policy controller (linkerd/linkerd2-proxy#2315)
* build(deps): bump windows_x86_64_msvc from 0.42.1 to 0.42.2 (linkerd/linkerd2-proxy#2319)
* build(deps): bump proc-macro2 from 1.0.51 to 1.0.52 (linkerd/linkerd2-proxy#2320)
* outbound: Apply filters to outbound requests (linkerd/linkerd2-proxy#2260)
* test: add mock client policy resolver (linkerd/linkerd2-proxy#2314)
* build(deps): bump tj-actions/changed-files from 35.6.4 to 35.7.0 (linkerd/linkerd2-proxy#2318)
* build(deps): bump axum from 0.6.10 to 0.6.11 (linkerd/linkerd2-proxy#2321)
* build(deps): bump ryu from 1.0.12 to 1.0.13 (linkerd/linkerd2-proxy#2322)
* build(deps): bump windows_x86_64_gnullvm from 0.42.1 to 0.42.2 (linkerd/linkerd2-proxy#2323)
* outbound: Eagerly cancel synthesized profile task (linkerd/linkerd2-proxy#2317)
* outbound: Simplify discovery debug logging (linkerd/linkerd2-proxy#2316)
* build(deps): bump tj-actions/changed-files from 35.6.1 to 35.6.4 (linkerd/linkerd2-proxy#2309)
olix0r added a commit to linkerd/linkerd2 that referenced this pull request Mar 21, 2023
* proxy: v2.193.0

This proxy release changes the multicluster gateway to discover Gateway
API routes via the `OutboundPolicy` API. This builds on the similar
changes to the outbound proxy in v2.192.

---

* gateway: discover client policies from the policy controller (linkerd/linkerd2-proxy#2315)
* build(deps): bump windows_x86_64_msvc from 0.42.1 to 0.42.2 (linkerd/linkerd2-proxy#2319)
* build(deps): bump proc-macro2 from 1.0.51 to 1.0.52 (linkerd/linkerd2-proxy#2320)
* outbound: Apply filters to outbound requests (linkerd/linkerd2-proxy#2260)
* test: add mock client policy resolver (linkerd/linkerd2-proxy#2314)
* build(deps): bump tj-actions/changed-files from 35.6.4 to 35.7.0 (linkerd/linkerd2-proxy#2318)
* build(deps): bump axum from 0.6.10 to 0.6.11 (linkerd/linkerd2-proxy#2321)
* build(deps): bump ryu from 1.0.12 to 1.0.13 (linkerd/linkerd2-proxy#2322)
* build(deps): bump windows_x86_64_gnullvm from 0.42.1 to 0.42.2 (linkerd/linkerd2-proxy#2323)
* outbound: Eagerly cancel synthesized profile task (linkerd/linkerd2-proxy#2317)
* outbound: Simplify discovery debug logging (linkerd/linkerd2-proxy#2316)
* build(deps): bump tj-actions/changed-files from 35.6.1 to 35.6.4 (linkerd/linkerd2-proxy#2309)

* proxy: v2.193.1

* outbound: fix `Balance::Dispatch` "authority" labels (linkerd/linkerd2-proxy#2332)
* outbound: refactor `discover::resolver` into a method (linkerd/linkerd2-proxy#2331)

* proxy: v2.193.2

Both outbound and gateway proxies now resolve client policies from the
OutboundPolicies API. When the outbound proxy attempts to discover a
policy and the policy controller returns NotFound, it synthesizes a
default policy from the discovered ServiceProfile. However, when the
gateway proxy receives a NotFound, it will currently fail the
connection, based on the assumption that only valid cluster DNS names
are gatewayed (and not arbitrary IPs that might be forwards).
Unfortunately, this is not quite true. Gateway proxies may attempt to
discover cluster DNS names that are Pod DNS names, rather than Service
DNS names, and the policy controller will return NotFound for those
names.

This branch therefore changes the gateway proxy to also synthesize
default ClientPolicies based on the ServiceProfile when receiving a
NotFound status. Some of the code for synthesizing a client policy
from a ServiceProfile that's currently used in the outbound proxy was
factored out so that it could be reused here.

---

* gateway: move discovery resolver into its own file (linkerd/linkerd2-proxy#2343)
* outbound: Fix incorrect l5d-proxy-connection logs (linkerd/linkerd2-proxy#2344)
* gateway: synthesize ClientPolicies when the controller returns `NotFound` (linkerd/linkerd2-proxy#2333)

Signed-off-by: Oliver Gould <ver@buoyant.io>

---------

Signed-off-by: Oliver Gould <ver@buoyant.io>
Co-authored-by: Oliver Gould <ver@buoyant.io>
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2 participants