mirror of https://github.com/status-im/consul.git
526 lines
19 KiB
Go
526 lines
19 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: BUSL-1.1
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package xdsv2
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import (
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"fmt"
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envoy_core_v3 "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
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envoy_matcher_v3 "github.com/envoyproxy/go-control-plane/envoy/type/matcher/v3"
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"github.com/hashicorp/consul/agent/xds/response"
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"github.com/hashicorp/consul/envoyextensions/xdscommon"
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"github.com/hashicorp/consul/proto-public/pbmesh/v1alpha1/pbproxystate"
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"google.golang.org/protobuf/types/known/wrapperspb"
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"strings"
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envoy_route_v3 "github.com/envoyproxy/go-control-plane/envoy/config/route/v3"
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"google.golang.org/protobuf/proto"
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)
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func (pr *ProxyResources) makeXDSRoutes() ([]proto.Message, error) {
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routes := make([]proto.Message, 0)
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for name, r := range pr.proxyState.Routes {
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protoRoute := pr.makeEnvoyRouteConfigFromProxystateRoute(name, r)
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// TODO: aggregate errors for routes and still return any properly formed routes.
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routes = append(routes, protoRoute)
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}
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return routes, nil
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}
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func (pr *ProxyResources) makeEnvoyRoute(name string) (*envoy_route_v3.RouteConfiguration, error) {
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var route *envoy_route_v3.RouteConfiguration
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// TODO(proxystate): This will make routes in the future. This function should distinguish between static routes
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// inlined into listeners and non-static routes that should be added as top level Envoy resources.
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_, ok := pr.proxyState.Routes[name]
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if !ok {
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// This should not happen with a valid proxy state.
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return nil, fmt.Errorf("could not find route in ProxyState: %s", name)
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}
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return route, nil
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}
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// makeEnvoyRouteConfigFromProxystateRoute converts the proxystate representation of a Route into Envoy proto message
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// form. We don't throw any errors here, since the proxystate has already been validated.
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func (pr *ProxyResources) makeEnvoyRouteConfigFromProxystateRoute(name string, psRoute *pbproxystate.Route) *envoy_route_v3.RouteConfiguration {
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envoyRouteConfig := &envoy_route_v3.RouteConfiguration{
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Name: name,
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// ValidateClusters defaults to true when defined statically and false
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// when done via RDS. Re-set the reasonable value of true to prevent
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// null-routing traffic.
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ValidateClusters: response.MakeBoolValue(true),
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}
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for _, vh := range psRoute.GetVirtualHosts() {
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envoyRouteConfig.VirtualHosts = append(envoyRouteConfig.VirtualHosts, pr.makeEnvoyVHFromProxystateVH(vh))
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}
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return envoyRouteConfig
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}
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func (pr *ProxyResources) makeEnvoyVHFromProxystateVH(psVirtualHost *pbproxystate.VirtualHost) *envoy_route_v3.VirtualHost {
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envoyVirtualHost := &envoy_route_v3.VirtualHost{
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Name: psVirtualHost.Name,
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Domains: psVirtualHost.GetDomains(),
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}
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for _, rr := range psVirtualHost.GetRouteRules() {
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envoyVirtualHost.Routes = append(envoyVirtualHost.Routes, pr.makeEnvoyRouteFromProxystateRouteRule(rr))
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}
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for _, hm := range psVirtualHost.GetHeaderMutations() {
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injectEnvoyVirtualHostWithProxystateHeaderMutation(envoyVirtualHost, hm)
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}
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return envoyVirtualHost
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}
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func (pr *ProxyResources) makeEnvoyRouteFromProxystateRouteRule(psRouteRule *pbproxystate.RouteRule) *envoy_route_v3.Route {
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envoyRouteRule := &envoy_route_v3.Route{
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Match: makeEnvoyRouteMatchFromProxystateRouteMatch(psRouteRule.GetMatch()),
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Action: pr.makeEnvoyRouteActionFromProxystateRouteDestination(psRouteRule.GetDestination()),
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}
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for _, hm := range psRouteRule.GetHeaderMutations() {
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injectEnvoyRouteRuleWithProxystateHeaderMutation(envoyRouteRule, hm)
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}
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return envoyRouteRule
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}
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func makeEnvoyRouteMatchFromProxystateRouteMatch(psRouteMatch *pbproxystate.RouteMatch) *envoy_route_v3.RouteMatch {
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envoyRouteMatch := &envoy_route_v3.RouteMatch{}
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switch psRouteMatch.PathMatch.GetPathMatch().(type) {
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case *pbproxystate.PathMatch_Exact:
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envoyRouteMatch.PathSpecifier = &envoy_route_v3.RouteMatch_Path{
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Path: psRouteMatch.PathMatch.GetExact(),
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}
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case *pbproxystate.PathMatch_Prefix:
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envoyRouteMatch.PathSpecifier = &envoy_route_v3.RouteMatch_Prefix{
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Prefix: psRouteMatch.PathMatch.GetPrefix(),
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}
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case *pbproxystate.PathMatch_Regex:
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envoyRouteMatch.PathSpecifier = &envoy_route_v3.RouteMatch_SafeRegex{
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SafeRegex: makeEnvoyRegexMatch(psRouteMatch.PathMatch.GetRegex()),
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}
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default:
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// This shouldn't be possible considering the types of PathMatch
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return nil
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}
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if len(psRouteMatch.GetHeaderMatches()) > 0 {
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envoyRouteMatch.Headers = make([]*envoy_route_v3.HeaderMatcher, 0, len(psRouteMatch.GetHeaderMatches()))
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}
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for _, psHM := range psRouteMatch.GetHeaderMatches() {
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envoyRouteMatch.Headers = append(envoyRouteMatch.Headers, makeEnvoyHeaderMatcherFromProxystateHeaderMatch(psHM))
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}
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if len(psRouteMatch.MethodMatches) > 0 {
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methodHeaderRegex := strings.Join(psRouteMatch.MethodMatches, "|")
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eh := &envoy_route_v3.HeaderMatcher{
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Name: ":method",
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HeaderMatchSpecifier: &envoy_route_v3.HeaderMatcher_SafeRegexMatch{
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SafeRegexMatch: makeEnvoyRegexMatch(methodHeaderRegex),
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},
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}
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envoyRouteMatch.Headers = append(envoyRouteMatch.Headers, eh)
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}
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if len(psRouteMatch.GetQueryParameterMatches()) > 0 {
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envoyRouteMatch.QueryParameters = make([]*envoy_route_v3.QueryParameterMatcher, 0, len(psRouteMatch.GetQueryParameterMatches()))
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}
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for _, psQM := range psRouteMatch.GetQueryParameterMatches() {
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envoyRouteMatch.QueryParameters = append(envoyRouteMatch.QueryParameters, makeEnvoyQueryParamFromProxystateQueryMatch(psQM))
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}
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return envoyRouteMatch
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}
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func makeEnvoyRegexMatch(pattern string) *envoy_matcher_v3.RegexMatcher {
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return &envoy_matcher_v3.RegexMatcher{
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EngineType: &envoy_matcher_v3.RegexMatcher_GoogleRe2{
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GoogleRe2: &envoy_matcher_v3.RegexMatcher_GoogleRE2{},
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},
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Regex: pattern,
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}
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}
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func makeEnvoyHeaderMatcherFromProxystateHeaderMatch(psMatch *pbproxystate.HeaderMatch) *envoy_route_v3.HeaderMatcher {
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envoyHeaderMatcher := &envoy_route_v3.HeaderMatcher{
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Name: psMatch.Name,
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}
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switch psMatch.Match.(type) {
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case *pbproxystate.HeaderMatch_Exact:
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envoyHeaderMatcher.HeaderMatchSpecifier = &envoy_route_v3.HeaderMatcher_ExactMatch{
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ExactMatch: psMatch.GetExact(),
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}
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case *pbproxystate.HeaderMatch_Regex:
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envoyHeaderMatcher.HeaderMatchSpecifier = &envoy_route_v3.HeaderMatcher_SafeRegexMatch{
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SafeRegexMatch: makeEnvoyRegexMatch(psMatch.GetRegex()),
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}
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case *pbproxystate.HeaderMatch_Prefix:
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envoyHeaderMatcher.HeaderMatchSpecifier = &envoy_route_v3.HeaderMatcher_PrefixMatch{
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PrefixMatch: psMatch.GetPrefix(),
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}
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case *pbproxystate.HeaderMatch_Suffix:
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envoyHeaderMatcher.HeaderMatchSpecifier = &envoy_route_v3.HeaderMatcher_SuffixMatch{
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SuffixMatch: psMatch.GetSuffix(),
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}
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case *pbproxystate.HeaderMatch_Present:
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envoyHeaderMatcher.HeaderMatchSpecifier = &envoy_route_v3.HeaderMatcher_PresentMatch{
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PresentMatch: true,
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}
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default:
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// This shouldn't be possible considering the types of HeaderMatch
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return nil
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}
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if psMatch.GetInvertMatch() {
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envoyHeaderMatcher.InvertMatch = true
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}
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return envoyHeaderMatcher
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}
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func makeEnvoyQueryParamFromProxystateQueryMatch(psMatch *pbproxystate.QueryParameterMatch) *envoy_route_v3.QueryParameterMatcher {
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envoyQueryParamMatcher := &envoy_route_v3.QueryParameterMatcher{
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Name: psMatch.Name,
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}
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switch psMatch.Match.(type) {
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case *pbproxystate.QueryParameterMatch_Exact:
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envoyQueryParamMatcher.QueryParameterMatchSpecifier = &envoy_route_v3.QueryParameterMatcher_StringMatch{
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StringMatch: &envoy_matcher_v3.StringMatcher{
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MatchPattern: &envoy_matcher_v3.StringMatcher_Exact{
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Exact: psMatch.GetExact(),
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},
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},
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}
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case *pbproxystate.QueryParameterMatch_Regex:
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envoyQueryParamMatcher.QueryParameterMatchSpecifier = &envoy_route_v3.QueryParameterMatcher_StringMatch{
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StringMatch: &envoy_matcher_v3.StringMatcher{
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MatchPattern: &envoy_matcher_v3.StringMatcher_SafeRegex{
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SafeRegex: makeEnvoyRegexMatch(psMatch.GetRegex()),
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},
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},
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}
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case *pbproxystate.QueryParameterMatch_Present:
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envoyQueryParamMatcher.QueryParameterMatchSpecifier = &envoy_route_v3.QueryParameterMatcher_PresentMatch{
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PresentMatch: true,
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}
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default:
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// This shouldn't be possible considering the types of QueryMatch
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return nil
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}
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return envoyQueryParamMatcher
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}
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// TODO (dans): Will this always be envoy_route_v3.Route_Route?
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// Definitely for connect proxies this is the only option.
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func (pr *ProxyResources) makeEnvoyRouteActionFromProxystateRouteDestination(psRouteDestination *pbproxystate.RouteDestination) *envoy_route_v3.Route_Route {
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envoyRouteRoute := &envoy_route_v3.Route_Route{
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Route: &envoy_route_v3.RouteAction{},
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}
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switch psRouteDestination.Destination.(type) {
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case *pbproxystate.RouteDestination_Cluster:
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psCluster := psRouteDestination.GetCluster()
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envoyRouteRoute.Route.ClusterSpecifier = &envoy_route_v3.RouteAction_Cluster{
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Cluster: psCluster.GetName(),
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}
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clusters, _ := pr.makeClusters(psCluster.Name)
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pr.envoyResources[xdscommon.ClusterType] = append(pr.envoyResources[xdscommon.ClusterType], clusters...)
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case *pbproxystate.RouteDestination_WeightedClusters:
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psWeightedClusters := psRouteDestination.GetWeightedClusters()
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envoyClusters := make([]*envoy_route_v3.WeightedCluster_ClusterWeight, 0, len(psWeightedClusters.GetClusters()))
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totalWeight := 0
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for _, psCluster := range psWeightedClusters.GetClusters() {
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clusters, _ := pr.makeClusters(psCluster.Name)
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pr.envoyResources[xdscommon.ClusterType] = append(pr.envoyResources[xdscommon.ClusterType], clusters...)
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totalWeight += int(psCluster.Weight.GetValue())
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envoyClusters = append(envoyClusters, makeEnvoyClusterWeightFromProxystateWeightedCluster(psCluster))
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}
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var envoyWeightScale *wrapperspb.UInt32Value
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if totalWeight == 10000 {
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envoyWeightScale = response.MakeUint32Value(10000)
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}
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envoyRouteRoute.Route.ClusterSpecifier = &envoy_route_v3.RouteAction_WeightedClusters{
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WeightedClusters: &envoy_route_v3.WeightedCluster{
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Clusters: envoyClusters,
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TotalWeight: envoyWeightScale,
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},
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}
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default:
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// This shouldn't be possible considering the types of Destination
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return nil
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}
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injectEnvoyRouteActionWithProxystateDestinationConfig(envoyRouteRoute.Route, psRouteDestination.GetDestinationConfiguration())
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if psRouteDestination.GetDestinationConfiguration() != nil {
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config := psRouteDestination.GetDestinationConfiguration()
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action := envoyRouteRoute.Route
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action.PrefixRewrite = config.GetPrefixRewrite()
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if config.GetTimeoutConfig().GetTimeout() != nil {
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action.Timeout = config.GetTimeoutConfig().GetTimeout()
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}
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if config.GetTimeoutConfig().GetTimeout() != nil {
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action.Timeout = config.GetTimeoutConfig().GetTimeout()
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}
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if config.GetTimeoutConfig().GetIdleTimeout() != nil {
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action.IdleTimeout = config.GetTimeoutConfig().GetIdleTimeout()
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}
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if config.GetRetryPolicy() != nil {
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action.RetryPolicy = makeEnvoyRetryPolicyFromProxystateRetryPolicy(config.GetRetryPolicy())
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}
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}
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return envoyRouteRoute
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}
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func makeEnvoyClusterWeightFromProxystateWeightedCluster(cluster *pbproxystate.L7WeightedDestinationCluster) *envoy_route_v3.WeightedCluster_ClusterWeight {
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envoyClusterWeight := &envoy_route_v3.WeightedCluster_ClusterWeight{
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Name: cluster.GetName(),
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Weight: cluster.GetWeight(),
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}
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for _, hm := range cluster.GetHeaderMutations() {
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injectEnvoyClusterWeightWithProxystateHeaderMutation(envoyClusterWeight, hm)
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}
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return envoyClusterWeight
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}
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func injectEnvoyClusterWeightWithProxystateHeaderMutation(envoyClusterWeight *envoy_route_v3.WeightedCluster_ClusterWeight, mutation *pbproxystate.HeaderMutation) {
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mutation.GetAction()
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switch mutation.GetAction().(type) {
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case *pbproxystate.HeaderMutation_RequestHeaderAdd:
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action := mutation.GetRequestHeaderAdd()
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header := action.GetHeader()
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app := action.GetAppendAction() == pbproxystate.AppendAction_APPEND_ACTION_APPEND_IF_EXISTS_OR_ADD
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hvo := &envoy_core_v3.HeaderValueOption{
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Header: &envoy_core_v3.HeaderValue{
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Key: header.GetKey(),
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Value: header.GetValue(),
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},
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Append: response.MakeBoolValue(app),
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}
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envoyClusterWeight.RequestHeadersToAdd = append(envoyClusterWeight.RequestHeadersToAdd, hvo)
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case *pbproxystate.HeaderMutation_RequestHeaderRemove:
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action := mutation.GetRequestHeaderRemove()
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envoyClusterWeight.RequestHeadersToRemove = append(envoyClusterWeight.RequestHeadersToRemove, action.GetHeaderKeys()...)
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case *pbproxystate.HeaderMutation_ResponseHeaderAdd:
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action := mutation.GetResponseHeaderAdd()
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header := action.GetHeader()
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app := action.GetAppendAction() == pbproxystate.AppendAction_APPEND_ACTION_APPEND_IF_EXISTS_OR_ADD
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hvo := &envoy_core_v3.HeaderValueOption{
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Header: &envoy_core_v3.HeaderValue{
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Key: header.GetKey(),
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Value: header.GetValue(),
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},
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Append: response.MakeBoolValue(app),
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}
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envoyClusterWeight.ResponseHeadersToAdd = append(envoyClusterWeight.ResponseHeadersToAdd, hvo)
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case *pbproxystate.HeaderMutation_ResponseHeaderRemove:
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action := mutation.GetResponseHeaderRemove()
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envoyClusterWeight.ResponseHeadersToRemove = append(envoyClusterWeight.ResponseHeadersToRemove, action.GetHeaderKeys()...)
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default:
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// This shouldn't be possible considering the types of Destination
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return
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}
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}
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func injectEnvoyRouteActionWithProxystateDestinationConfig(envoyAction *envoy_route_v3.RouteAction, config *pbproxystate.DestinationConfiguration) {
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if config == nil {
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return
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}
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if len(config.GetHashPolicies()) > 0 {
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envoyAction.HashPolicy = make([]*envoy_route_v3.RouteAction_HashPolicy, 0, len(config.GetHashPolicies()))
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}
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for _, policy := range config.GetHashPolicies() {
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envoyPolicy := makeEnvoyHashPolicyFromProxystateLBHashPolicy(policy)
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envoyAction.HashPolicy = append(envoyAction.HashPolicy, envoyPolicy)
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}
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if config.AutoHostRewrite != nil {
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envoyAction.HostRewriteSpecifier = &envoy_route_v3.RouteAction_AutoHostRewrite{
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AutoHostRewrite: config.AutoHostRewrite,
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}
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}
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}
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func makeEnvoyHashPolicyFromProxystateLBHashPolicy(psPolicy *pbproxystate.LoadBalancerHashPolicy) *envoy_route_v3.RouteAction_HashPolicy {
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switch psPolicy.GetPolicy().(type) {
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case *pbproxystate.LoadBalancerHashPolicy_ConnectionProperties:
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return &envoy_route_v3.RouteAction_HashPolicy{
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PolicySpecifier: &envoy_route_v3.RouteAction_HashPolicy_ConnectionProperties_{
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ConnectionProperties: &envoy_route_v3.RouteAction_HashPolicy_ConnectionProperties{
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SourceIp: true, // always true
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},
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},
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Terminal: psPolicy.GetConnectionProperties().GetTerminal(),
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}
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case *pbproxystate.LoadBalancerHashPolicy_Header:
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return &envoy_route_v3.RouteAction_HashPolicy{
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PolicySpecifier: &envoy_route_v3.RouteAction_HashPolicy_Header_{
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Header: &envoy_route_v3.RouteAction_HashPolicy_Header{
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HeaderName: psPolicy.GetHeader().GetName(),
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},
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},
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Terminal: psPolicy.GetHeader().GetTerminal(),
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}
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case *pbproxystate.LoadBalancerHashPolicy_Cookie:
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cookie := &envoy_route_v3.RouteAction_HashPolicy_Cookie{
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Name: psPolicy.GetCookie().GetName(),
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Path: psPolicy.GetCookie().GetPath(),
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Ttl: psPolicy.GetCookie().GetTtl(),
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}
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return &envoy_route_v3.RouteAction_HashPolicy{
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PolicySpecifier: &envoy_route_v3.RouteAction_HashPolicy_Cookie_{
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Cookie: cookie,
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},
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Terminal: psPolicy.GetCookie().GetTerminal(),
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}
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case *pbproxystate.LoadBalancerHashPolicy_QueryParameter:
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return &envoy_route_v3.RouteAction_HashPolicy{
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PolicySpecifier: &envoy_route_v3.RouteAction_HashPolicy_QueryParameter_{
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QueryParameter: &envoy_route_v3.RouteAction_HashPolicy_QueryParameter{
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Name: psPolicy.GetQueryParameter().GetName(),
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},
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},
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Terminal: psPolicy.GetQueryParameter().GetTerminal(),
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}
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}
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// This shouldn't be possible considering the types of LoadBalancerPolicy
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return nil
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}
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func makeEnvoyRetryPolicyFromProxystateRetryPolicy(psRetryPolicy *pbproxystate.RetryPolicy) *envoy_route_v3.RetryPolicy {
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return &envoy_route_v3.RetryPolicy{
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NumRetries: psRetryPolicy.GetNumRetries(),
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RetriableStatusCodes: psRetryPolicy.GetRetriableStatusCodes(),
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RetryOn: psRetryPolicy.GetRetryOn(),
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}
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}
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func injectEnvoyRouteRuleWithProxystateHeaderMutation(envoyRouteRule *envoy_route_v3.Route, mutation *pbproxystate.HeaderMutation) {
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mutation.GetAction()
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switch mutation.GetAction().(type) {
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case *pbproxystate.HeaderMutation_RequestHeaderAdd:
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action := mutation.GetRequestHeaderAdd()
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header := action.GetHeader()
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app := action.GetAppendAction() == pbproxystate.AppendAction_APPEND_ACTION_APPEND_IF_EXISTS_OR_ADD
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hvo := &envoy_core_v3.HeaderValueOption{
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Header: &envoy_core_v3.HeaderValue{
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Key: header.GetKey(),
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Value: header.GetValue(),
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},
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Append: response.MakeBoolValue(app),
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}
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envoyRouteRule.RequestHeadersToAdd = append(envoyRouteRule.RequestHeadersToAdd, hvo)
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case *pbproxystate.HeaderMutation_RequestHeaderRemove:
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action := mutation.GetRequestHeaderRemove()
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envoyRouteRule.RequestHeadersToRemove = append(envoyRouteRule.RequestHeadersToRemove, action.GetHeaderKeys()...)
|
|
|
|
case *pbproxystate.HeaderMutation_ResponseHeaderAdd:
|
|
action := mutation.GetResponseHeaderAdd()
|
|
header := action.GetHeader()
|
|
app := action.GetAppendAction() == pbproxystate.AppendAction_APPEND_ACTION_APPEND_IF_EXISTS_OR_ADD
|
|
|
|
hvo := &envoy_core_v3.HeaderValueOption{
|
|
Header: &envoy_core_v3.HeaderValue{
|
|
Key: header.GetKey(),
|
|
Value: header.GetValue(),
|
|
},
|
|
Append: response.MakeBoolValue(app),
|
|
}
|
|
envoyRouteRule.ResponseHeadersToAdd = append(envoyRouteRule.ResponseHeadersToAdd, hvo)
|
|
|
|
case *pbproxystate.HeaderMutation_ResponseHeaderRemove:
|
|
action := mutation.GetResponseHeaderRemove()
|
|
envoyRouteRule.ResponseHeadersToRemove = append(envoyRouteRule.ResponseHeadersToRemove, action.GetHeaderKeys()...)
|
|
|
|
default:
|
|
// This shouldn't be possible considering the types of Destination
|
|
return
|
|
}
|
|
}
|
|
|
|
func injectEnvoyVirtualHostWithProxystateHeaderMutation(envoyVirtualHost *envoy_route_v3.VirtualHost, mutation *pbproxystate.HeaderMutation) {
|
|
|
|
mutation.GetAction()
|
|
switch mutation.GetAction().(type) {
|
|
case *pbproxystate.HeaderMutation_RequestHeaderAdd:
|
|
action := mutation.GetRequestHeaderAdd()
|
|
header := action.GetHeader()
|
|
app := action.GetAppendAction() == pbproxystate.AppendAction_APPEND_ACTION_APPEND_IF_EXISTS_OR_ADD
|
|
|
|
hvo := &envoy_core_v3.HeaderValueOption{
|
|
Header: &envoy_core_v3.HeaderValue{
|
|
Key: header.GetKey(),
|
|
Value: header.GetValue(),
|
|
},
|
|
Append: response.MakeBoolValue(app),
|
|
}
|
|
envoyVirtualHost.RequestHeadersToAdd = append(envoyVirtualHost.RequestHeadersToAdd, hvo)
|
|
|
|
case *pbproxystate.HeaderMutation_RequestHeaderRemove:
|
|
action := mutation.GetRequestHeaderRemove()
|
|
envoyVirtualHost.RequestHeadersToRemove = append(envoyVirtualHost.RequestHeadersToRemove, action.GetHeaderKeys()...)
|
|
|
|
case *pbproxystate.HeaderMutation_ResponseHeaderAdd:
|
|
action := mutation.GetResponseHeaderAdd()
|
|
header := action.GetHeader()
|
|
app := action.GetAppendAction() == pbproxystate.AppendAction_APPEND_ACTION_APPEND_IF_EXISTS_OR_ADD
|
|
|
|
hvo := &envoy_core_v3.HeaderValueOption{
|
|
Header: &envoy_core_v3.HeaderValue{
|
|
Key: header.GetKey(),
|
|
Value: header.GetValue(),
|
|
},
|
|
Append: response.MakeBoolValue(app),
|
|
}
|
|
envoyVirtualHost.ResponseHeadersToAdd = append(envoyVirtualHost.ResponseHeadersToAdd, hvo)
|
|
|
|
case *pbproxystate.HeaderMutation_ResponseHeaderRemove:
|
|
action := mutation.GetResponseHeaderRemove()
|
|
envoyVirtualHost.ResponseHeadersToRemove = append(envoyVirtualHost.ResponseHeadersToRemove, action.GetHeaderKeys()...)
|
|
|
|
default:
|
|
// This shouldn't be possible considering the types of Destination
|
|
return
|
|
}
|
|
}
|