103 Commits (f76da16000bebce8cdb112c17107b05de81eec97)

Author	SHA1	Message	Date
Michael Zalimeni	5e517c5980	[NET-6221] Ensure LB policy set for locality-aware routing (CE) (#19283) ... Ensure LB policy set for locality-aware routing (CE) `overprovisioningFactor` should be overridden with the expected value (100,000) when there are multiple endpoint groups. Update code and tests to enforce this. This is an Enterprise feature. This commit represents the CE portions of the change; tests are added in the corresponding `consul-enterprise` change.	1 year ago
Derek Menteer	a698142325	Add extra logging for mesh health endpoints. (#18647)	1 year ago
John Murret	b80c5258fa	NET-4853 - xds v2 - implement base connect proxy functionality for clusters (#18499)	1 year ago
hashicorp-copywrite[bot]	5fb9df1640	[COMPLIANCE] License changes (#18443) ... * Adding explicit MPL license for sub-package This directory and its subdirectories (packages) contain files licensed with the MPLv2 `LICENSE` file in this directory and are intentionally licensed separately from the BSL `LICENSE` file at the root of this repository. * Adding explicit MPL license for sub-package This directory and its subdirectories (packages) contain files licensed with the MPLv2 `LICENSE` file in this directory and are intentionally licensed separately from the BSL `LICENSE` file at the root of this repository. * Updating the license from MPL to Business Source License Going forward, this project will be licensed under the Business Source License v1.1. Please see our blog post for more details at <Blog URL>, FAQ at www.hashicorp.com/licensing-faq, and details of the license at www.hashicorp.com/bsl. * add missing license headers * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 --------- Co-authored-by: hashicorp-copywrite[bot] <110428419+hashicorp-copywrite[bot]@users.noreply.github.com>	1 year ago
Michael Zalimeni	05604eeec1	[NET-5217] [OSS] Derive sidecar proxy locality from parent service (#18437) ... * Add logging to locality policy application In OSS, this is currently a no-op. * Inherit locality when registering sidecars When sidecar locality is not explicitly configured, inherit locality from the proxied service.	1 year ago
Dan Stough	8e3a1ddeb6	[OSS] Improve xDS Code Coverage - Endpoints and Misc (#18222) ... test: improve xDS endpoints code coverage	1 year ago
Eric Haberkorn	a3ba559149	Make locality aware routing xDS changes (#17826)	1 year ago
Eric Haberkorn	17a280d51b	This fixes an issue where TCP services that are exported cannot be configured to failover. (#17469) ... This will likely happen frequently with sameness groups. Relaxing this constraint is harmless for failover because xds/endpoints exludes cross partition and peer endpoints.	2 years ago
sarahalsmiller	b147323fb0	xds: Remove APIGateway ToIngress function (#17453) ... * xds generation for routes api gateway * Update gateway.go * move buildHttpRoute into xds package * Update agent/consul/discoverychain/gateway.go * remove unneeded function * convert http route code to only run for http protocol to future proof code path * Update agent/consul/discoverychain/gateway.go Co-authored-by: Mike Morris <mikemorris@users.noreply.github.com> * fix tests, clean up http check logic * clean up todo * Fix casing in docstring * Fix import block, adjust docstrings * Rename func * Consolidate docstring onto single line * Remove ToIngress() conversion for APIGW, which generates its own xDS now * update name and comment * use constant value * use constant * rename readyUpstreams to readyListeners to better communicate what that function is doing --------- Co-authored-by: Mike Morris <mikemorris@users.noreply.github.com> Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>	2 years ago
sarahalsmiller	d34bde0e4e	xds: generate clusters directly from API gateway snapshot (#17391) ... * endpoints xds cluster configuration * clusters xds native generation * resources test fix * fix reversion in resources_test * Update agent/proxycfg/api_gateway.go Co-authored-by: John Maguire <john.maguire@hashicorp.com> * gofmt * Modify getReadyUpstreams to filter upstreams by listener (#17410) Each listener would previously have all upstreams from any route that bound to the listener. This is problematic when a route bound to one listener also binds to other listeners and so includes upstreams for multiple listeners. The list for a given listener would then wind up including upstreams for other listeners. * Update agent/proxycfg/api_gateway.go Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com> * Restore import blocking * Undo removal of unrelated code --------- Co-authored-by: John Maguire <john.maguire@hashicorp.com> Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>	2 years ago
sarahalsmiller	134aac7c26	xds: generate endpoints directly from API gateway snapshot (#17390) ... * endpoints xds cluster configuration * resources test fix * fix reversion in resources_test * Update agent/proxycfg/api_gateway.go Co-authored-by: John Maguire <john.maguire@hashicorp.com> * gofmt * Modify getReadyUpstreams to filter upstreams by listener (#17410) Each listener would previously have all upstreams from any route that bound to the listener. This is problematic when a route bound to one listener also binds to other listeners and so includes upstreams for multiple listeners. The list for a given listener would then wind up including upstreams for other listeners. * Update agent/proxycfg/api_gateway.go Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com> * Restore import blocking * Skip to next route if route has no upstreams * cleanup * change set from bool to empty struct --------- Co-authored-by: John Maguire <john.maguire@hashicorp.com> Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com>	2 years ago
Eric Haberkorn	0d1d2fc4c9	add order by locality failover to Consul enterprise (#16791)	2 years ago
Ronald	94ec4eb2f4	copyright headers for agent folder (#16704) ... * copyright headers for agent folder * Ignore test data files * fix proto files and remove headers in agent/uiserver folder * ignore deep-copy files	2 years ago
Eric Haberkorn	595131fca9	Refactor the disco chain -> xds logic (#16392)	2 years ago
Derek Menteer	30112288c8	Fix mesh gateways incorrectly matching peer locality. (#16257) ... Fix mesh gateways incorrectly matching peer locality. This fixes an issue where local mesh gateways use an incorrect address when attempting to forward traffic to a peered datacenter. Prior to this change it would use the lan address instead of the wan if the locality matched. This should never be done for peering, since we must route all traffic through the remote mesh gateway.	2 years ago
Thomas Eckert	e81a0c2855	API Gateway to Ingress Gateway Snapshot Translation and Routes to Virtual Routers and Splitters (#16127) ... * Stub proxycfg handler for API gateway * Add Service Kind constants/handling for API Gateway * Begin stubbing for SDS * Add new Secret type to xDS order of operations * Continue stubbing of SDS * Iterate on proxycfg handler for API gateway * Handle BoundAPIGateway config entry subscription in proxycfg-glue * Add API gateway to config snapshot validation * Add API gateway to config snapshot clone, leaf, etc. * Subscribe to bound route + cert config entries on bound-api-gateway * Track routes + certs on API gateway config snapshot * Generate DeepCopy() for types used in watch.Map * Watch all active references on api-gateway, unwatch inactive * Track loading of initial bound-api-gateway config entry * Use proper proto package for SDS mapping * Use ResourceReference instead of ServiceName, collect resources * Fix typo, add + remove TODOs * Watch discovery chains for TCPRoute * Add TODO for updating gateway services for api-gateway * make proto * Regenerate deep-copy for proxycfg * Set datacenter on upstream ID from query source * Watch discovery chains for http-route service backends * Add ServiceName getter to HTTP+TCP Service structs * Clean up unwatched discovery chains on API Gateway * Implement watch for ingress leaf certificate * Collect upstreams on http-route + tcp-route updates * Remove unused GatewayServices update handler * Remove unnecessary gateway services logic for API Gateway * Remove outdate TODO * Use .ToIngress where appropriate, including TODO for cleaning up * Cancel before returning error * Remove GatewayServices subscription * Add godoc for handlerAPIGateway functions * Update terminology from Connect => Consul Service Mesh Consistent with terminology changes in https://github.com/hashicorp/consul/pull/12690 * Add missing TODO * Remove duplicate switch case * Rerun deep-copy generator * Use correct property on config snapshot * Remove unnecessary leaf cert watch * Clean up based on code review feedback * Note handler properties that are initialized but set elsewhere * Add TODO for moving helper func into structs pkg * Update generated DeepCopy code * gofmt * Begin stubbing for SDS * Start adding tests * Remove second BoundAPIGateway case in glue * TO BE PICKED: fix formatting of str * WIP * Fix merge conflict * Implement HTTP Route to Discovery Chain config entries * Stub out function to create discovery chain * Add discovery chain merging code (#16131) * Test adding TCP and HTTP routes * Add some tests for the synthesizer * Run go mod tidy * Pairing with N8 * Run deep copy * Clean up GatewayChainSynthesizer * Fix missing assignment of BoundAPIGateway topic * Separate out synthesizeChains and toIngressTLS * Fix build errors * Ensure synthesizer skips non-matching routes by protocol * Rebase on N8s work * Generate DeepCopy() for API gateway listener types * Improve variable name * Regenerate DeepCopy() code * Fix linting issue * fix protobuf import * Fix more merge conflict errors * Fix synthesize test * Run deep copy * Add URLRewrite to proto * Update agent/consul/discoverychain/gateway_tcproute.go Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com> * Remove APIGatewayConfigEntry that was extra * Error out if route kind is unknown * Fix formatting errors in proto --------- Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com> Co-authored-by: Andrew Stucki <andrew.stucki@hashicorp.com>	2 years ago
Nathan Coleman	72a73661c9	Implement APIGateway proxycfg snapshot (#16194) ... * Stub proxycfg handler for API gateway * Add Service Kind constants/handling for API Gateway * Begin stubbing for SDS * Add new Secret type to xDS order of operations * Continue stubbing of SDS * Iterate on proxycfg handler for API gateway * Handle BoundAPIGateway config entry subscription in proxycfg-glue * Add API gateway to config snapshot validation * Add API gateway to config snapshot clone, leaf, etc. * Subscribe to bound route + cert config entries on bound-api-gateway * Track routes + certs on API gateway config snapshot * Generate DeepCopy() for types used in watch.Map * Watch all active references on api-gateway, unwatch inactive * Track loading of initial bound-api-gateway config entry * Use proper proto package for SDS mapping * Use ResourceReference instead of ServiceName, collect resources * Fix typo, add + remove TODOs * Watch discovery chains for TCPRoute * Add TODO for updating gateway services for api-gateway * make proto * Regenerate deep-copy for proxycfg * Set datacenter on upstream ID from query source * Watch discovery chains for http-route service backends * Add ServiceName getter to HTTP+TCP Service structs * Clean up unwatched discovery chains on API Gateway * Implement watch for ingress leaf certificate * Collect upstreams on http-route + tcp-route updates * Remove unused GatewayServices update handler * Remove unnecessary gateway services logic for API Gateway * Remove outdate TODO * Use .ToIngress where appropriate, including TODO for cleaning up * Cancel before returning error * Remove GatewayServices subscription * Add godoc for handlerAPIGateway functions * Update terminology from Connect => Consul Service Mesh Consistent with terminology changes in https://github.com/hashicorp/consul/pull/12690 * Add missing TODO * Remove duplicate switch case * Rerun deep-copy generator * Use correct property on config snapshot * Remove unnecessary leaf cert watch * Clean up based on code review feedback * Note handler properties that are initialized but set elsewhere * Add TODO for moving helper func into structs pkg * Update generated DeepCopy code * gofmt * Generate DeepCopy() for API gateway listener types * Improve variable name * Regenerate DeepCopy() code * Fix linting issue * Temporarily remove the secret type from resource generation	2 years ago
Nitya Dhanushkodi	b8b37c2357	refactor: remove troubleshoot module dependency on consul top level module (#16162) ... Ensure nothing in the troubleshoot go module depends on consul's top level module. This is so we can import troubleshoot into consul-k8s and not import all of consul. * turns troubleshoot into a go module [authored by @curtbushko] * gets the envoy protos into the troubleshoot module [authored by @curtbushko] * adds a new go module `envoyextensions` which has xdscommon and extensioncommon folders that both the xds package and the troubleshoot package can import * adds testing and linting for the new go modules * moves the unit tests in `troubleshoot/validateupstream` that depend on proxycfg/xds into the xds package, with a comment describing why those tests cannot be in the troubleshoot package * fixes all the imports everywhere as a result of these changes Co-authored-by: Curt Bushko <cbushko@gmail.com>	2 years ago
Nitya Dhanushkodi	8d4c3aa42c	refactor: move service to service validation to troubleshoot package (#16132) ... This is to reduce the dependency on xds from within the troubleshoot package.	2 years ago
Derek Menteer	2facf50923	Fix configuration merging for implicit tproxy upstreams. (#16000) ... Fix configuration merging for implicit tproxy upstreams. Change the merging logic so that the wildcard upstream has correct proxy-defaults and service-defaults values combined into it. It did not previously merge all fields, and the wildcard upstream did not exist unless service-defaults existed (it ignored proxy-defaults, essentially). Change the way we fetch upstream configuration in the xDS layer so that it falls back to the wildcard when no matching upstream is found. This is what allows implicit peer upstreams to have the correct "merged" config. Change proxycfg to always watch local mesh gateway endpoints whenever a peer upstream is found. This simplifies the logic so that we do not have to inspect the "merged" configuration on peer upstreams to extract the mesh gateway mode.	2 years ago
Matt Keeler	5afd4657ec	Protobuf Modernization (#15949) ... * Protobuf Modernization Remove direct usage of golang/protobuf in favor of google.golang.org/protobuf Marshallers (protobuf and json) needed some changes to account for different APIs. Moved to using the google.golang.org/protobuf/types/known/* for the well known types including replacing some custom Struct manipulation with whats available in the structpb well known type package. This also updates our devtools script to install protoc-gen-go from the right location so that files it generates conform to the correct interfaces. * Fix go-mod-tidy make target to work on all modules	2 years ago
Derek Menteer	97ec5279aa	Fix local mesh gateway with peering discovery chains. (#15690) ... Fix local mesh gateway with peering discovery chains. Prior to this patch, discovery chains with peers would not properly honor the mesh gateway mode for two reasons. 1. An incorrect target upstream ID was used to lookup the mesh gateway mode. To fix this, the parent upstream uid is now used instead of the discovery-chain-target-uid to find the intended mesh gateway mode. 2. The watch for local mesh gateways was never initialized for discovery chains. To fix this, the discovery chains are now scanned, and a local GW watch is spawned if: the mesh gateway mode is local and the target is a peering connection.	2 years ago
Derek Menteer	418bd62c44	Fix mesh gateway configuration with proxy-defaults (#15186) ... * Fix mesh gateway proxy-defaults not affecting upstreams. * Clarify distinction with upstream settings Top-level mesh gateway mode in proxy-defaults and service-defaults gets merged into NodeService.Proxy.MeshGateway, and only gets merged with the mode attached to an an upstream in proxycfg/xds. * Fix mgw mode usage for peered upstreams There were a couple issues with how mgw mode was being handled for peered upstreams. For starters, mesh gateway mode from proxy-defaults and the top-level of service-defaults gets stored in NodeService.Proxy.MeshGateway, but the upstream watch for peered data was only considering the mesh gateway config attached in NodeService.Proxy.Upstreams[i]. This means that applying a mesh gateway mode via global proxy-defaults or service-defaults on the downstream would not have an effect. Separately, transparent proxy watches for peered upstreams didn't consider mesh gateway mode at all. This commit addresses the first issue by ensuring that we overlay the upstream config for peered upstreams as we do for non-peered. The second issue is addressed by re-using setupWatchesForPeeredUpstream when handling transparent proxy updates. Note that for transparent proxies we do not yet support mesh gateway mode per upstream, so the NodeService.Proxy.MeshGateway mode is used. * Fix upstream mesh gateway mode handling in xds This commit ensures that when determining the mesh gateway mode for peered upstreams we consider the NodeService.Proxy.MeshGateway config as a baseline. In absense of this change, setting a mesh gateway mode via proxy-defaults or the top-level of service-defaults will not have an effect for peered upstreams. * Merge service/proxy defaults in cfg resolver Previously the mesh gateway mode for connect proxies would be merged at three points: 1. On servers, in ComputeResolvedServiceConfig. 2. On clients, in MergeServiceConfig. 3. On clients, in proxycfg/xds. The first merge returns a ServiceConfigResponse where there is a top-level MeshGateway config from proxy/service-defaults, along with per-upstream config. The second merge combines per-upstream config specified at the service instance with per-upstream config specified centrally. The third merge combines the NodeService.Proxy.MeshGateway config containing proxy/service-defaults data with the per-upstream mode. This third merge is easy to miss, which led to peered upstreams not considering the mesh gateway mode from proxy-defaults. This commit removes the third merge, and ensures that all mesh gateway config is available at the upstream. This way proxycfg/xds do not need to do additional overlays. * Ensure that proxy-defaults is considered in wc Upstream defaults become a synthetic Upstream definition under a wildcard key "*". Now that proxycfg/xds expect Upstream definitions to have the final MeshGateway values, this commit ensures that values from proxy-defaults/service-defaults are the default for this synthetic upstream. * Add changelog. Co-authored-by: freddygv <freddy@hashicorp.com>	2 years ago
Freddy	7f5f7e9cf9	Avoid blocking child type updates on parent ack (#15083)	2 years ago
DanStough	77ab28c5c7	feat: xDS updates for peerings control plane through mesh gw	2 years ago
Eric Haberkorn	1633cf20ea	Make the mesh gateway changes to allow `local` mode for cluster peering data plane traffic (#14817) ... Make the mesh gateway changes to allow `local` mode for cluster peering data plane traffic	2 years ago
Freddy	d9fe3578ac	Merge pull request #14734 from hashicorp/NET-643-update-mesh-gateway-envoy-config-for-inbound-peering-control-plane-traffic	2 years ago
freddygv	b15d41534f	Update xds generation for peering over mesh gws ... This commit adds the xDS resources needed for INBOUND traffic from peer clusters: - 1 filter chain for all inbound peering requests. - 1 cluster for all inbound peering requests. - 1 endpoint per voting server with the gRPC TLS port configured. There is one filter chain and cluster because unlike with WAN federation, peer clusters will not attempt to dial individual servers. Peer clusters will only dial the local mesh gateway addresses.	2 years ago
Eric Haberkorn	6570d5f004	Enable outbound peered requests to go through local mesh gateway (#14763)	2 years ago
freddygv	d818d7b096	Manage local server watches depending on mesh cfg ... Routing peering control plane traffic through mesh gateways can be enabled or disabled at runtime with the mesh config entry. This commit updates proxycfg to add or cancel watches for local servers depending on this central config. Note that WAN federation over mesh gateways is determined by a service metadata flag, and any updates to the gateway service registration will force the creation of a new snapshot. If enabled, WAN-fed over mesh gateways will trigger a local server watch on initialize(). Because of this we will only add/remove server watches if WAN federation over mesh gateways is disabled.	2 years ago
Eric Haberkorn	aa8268e50c	Implement Cluster Peering Redirects (#14445) ... implement cluster peering redirects	2 years ago
Eric Haberkorn	3726a0ab7a	Finish up cluster peering failover (#14396)	2 years ago
Eric Haberkorn	ebd5513d4b	Refactor failover code to use Envoy's aggregate clusters (#14178)	2 years ago
Chris S. Kim	8ed49ea4d0	Update envoy metrics label extraction for peered clusters and listeners (#13818) ... Now that peered upstreams can generate envoy resources (#13758), we need a way to disambiguate local from peered resources in our metrics. The key difference is that datacenter and partition will be replaced with peer, since in the context of peered resources partition is ambiguous (could refer to the partition in a remote cluster or one that exists locally). The partition and datacenter of the proxy will always be that of the source service. Regexes were updated to make emitting datacenter and partition labels mutually exclusive with peer labels. Listener filter names were updated to better match the existing regex. Cluster names assigned to peered upstreams were updated to be synthesized from local peer name (it previously used the externally provided primary SNI, which contained the peer name from the other side of the peering). Integration tests were updated to assert for the new peer labels.	2 years ago
DanStough	2da8949d78	feat: convert destination address to slice	2 years ago
Chris S. Kim	495936300e	Make envoy resources for inferred peered upstreams (#13758) ... Peered upstreams has a separate loop in xds from discovery chain upstreams. This PR adds similar but slightly modified code to add filters for peered upstream listeners, clusters, and endpoints in the case of transparent proxy.	2 years ago
Dan Stough	49f3dadb8f	feat: connect proxy xDS for destinations ... Signed-off-by: Dhia Ayachi <dhia@hashicorp.com>	2 years ago
Chris S. Kim	f56810132f	Check if an upstream is implicit from either intentions or peered services	2 years ago
Chris S. Kim	02cff2394d	Use new maps for proxycfg peered data	2 years ago
R.B. Boyer	2317f37b4d	state: prohibit exported discovery chains to have cross-datacenter or cross-partition references (#13726) ... Because peerings are pairwise, between two tuples of (datacenter, partition) having any exported reference via a discovery chain that crosses out of the peered datacenter or partition will ultimately not be able to work for various reasons. The biggest one is that there is no way in the ultimate destination to configure an intention that can allow an external SpiffeID to access a service. This PR ensures that a user simply cannot do this, so they won't run into weird situations like this.	2 years ago
R.B. Boyer	1a9c86ea8f	xds: mesh gateways now correctly load up peer-exported discovery chains using L7 protocols (#13624) ... A mesh gateway will now configure the filter chains for L7 exported services using the correct discovery chain information.	2 years ago
R.B. Boyer	f557509e58	xds: allow for peered upstreams to use tagged addresses that are hostnames (#13422) ... Mesh gateways can use hostnames in their tagged addresses (#7999). This is useful if you were to expose a mesh gateway using a cloud networking load balancer appliance that gives you a DNS name but no reliable static IPs. Envoy cannot accept hostnames via EDS and those must be configured using CDS. There was already logic when configuring gateways in other locations in the code, but given the illusions in play for peering the downstream of a peered service wasn't aware that it should be doing that. Also: - ensuring that we always try to use wan-like addresses to cross peer boundaries.	3 years ago
R.B. Boyer	019aeaa57d	peering: update how cross-peer upstreams and represented in proxycfg and rendered in xds (#13362) ... This removes unnecessary, vestigal remnants of discovery chains.	3 years ago
Freddy	74ca6406ea	Configure upstream TLS context with peer root certs (#13321) ... For mTLS to work between two proxies in peered clusters with different root CAs, proxies need to configure their outbound listener to use different root certificates for validation. Up until peering was introduced proxies would only ever use one set of root certificates to validate all mesh traffic, both inbound and outbound. Now an upstream proxy may have a leaf certificate signed by a CA that's different from the dialing proxy's. This PR makes changes to proxycfg and xds so that the upstream TLS validation uses different root certificates depending on which cluster is being dialed.	3 years ago
Mark Anderson	98a2e282be	Fixup acl.EnterpriseMeta ... Signed-off-by: Mark Anderson <manderson@hashicorp.com>	3 years ago
R.B. Boyer	ac5bea862a	server: ensure that service-defaults meta is incorporated into the discovery chain response (#12511) ... Also add a new "Default" field to the discovery chain response to clients	3 years ago
freddygv	cbea3d203c	Fix race of upstreams with same passthrough ip ... Due to timing, a transparent proxy could have two upstreams to dial directly with the same address. For example: - The orders service can dial upstreams shipping and payment directly. - An instance of shipping at address 10.0.0.1 is deregistered. - Payments is scaled up and scheduled to have address 10.0.0.1. - The orders service receives the event for the new payments instance before seeing the deregistration for the shipping instance. At this point two upstreams have the same passthrough address and Envoy will reject the listener configuration. To disambiguate this commit considers the Raft index when storing passthrough addresses. In the example above, 10.0.0.1 would only be associated with the newer payments service instance.	3 years ago
R.B. Boyer	424f3cdd2c	proxycfg: introduce explicit UpstreamID in lieu of bare string (#12125) ... The gist here is that now we use a value-type struct proxycfg.UpstreamID as the map key in ConfigSnapshot maps where we used to use "upstream id-ish" strings. These are internal only and used just for bidirectional trips through the agent cache keyspace (like the discovery chain target struct). For the few places where the upstream id needs to be projected into xDS, that's what (proxycfg.UpstreamID).EnvoyID() is for. This lets us ALWAYS inject the partition and namespace into these things without making stuff like the golden testdata diverge.	3 years ago
freddygv	c5c290c503	Validate chains are associated with upstreams ... Previously we could get into a state where discovery chain entries were not cleaned up after the associated watch was cancelled. These changes add handling for that case where stray chain references are encountered.	3 years ago
Daniel Upton	50a1f20ff9	xds: prefer fed state gateway definitions if they're fresher (#11522) ... Fixes an issue described in #10132, where if two DCs are WAN federated over mesh gateways, and the gateway in the non-primary DC is terminated and receives a new IP address (as is commonly the case when running them on ephemeral compute instances) the primary DC is unable to re-establish its connection until the agent running on its own gateway is restarted. This was happening because we always preferred gateways discovered by the `Internal.ServiceDump` RPC (which would fail because there's no way to dial the remote DC) over those discovered in the federation state, which is replicated as long as the primary DC's gateway is reachable.	3 years ago