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routematch.go
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/
routematch.go
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package api_conversion
import (
envoy_config_core_v3 "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
envoy_config_route_v3 "github.com/envoyproxy/go-control-plane/envoy/config/route/v3"
envoytype "github.com/envoyproxy/go-control-plane/envoy/type/v3"
"github.com/golang/protobuf/ptypes/wrappers"
envoyroute_gloo "github.com/solo-io/gloo/projects/gloo/pkg/api/external/envoy/api/v2/route"
envoytype_gloo "github.com/solo-io/gloo/projects/gloo/pkg/api/external/envoy/type"
envoycore_sk "github.com/solo-io/solo-kit/pkg/api/external/envoy/api/v2/core"
envoytype_sk "github.com/solo-io/solo-kit/pkg/api/external/envoy/type"
)
// Converts between Envoy and Gloo/solokit versions of envoy protos
// This is required because go-control-plane dropped gogoproto in favor of goproto
// in v0.9.0, but solokit depends on gogoproto (and the generated deep equals it creates).
//
// we should work to remove that assumption from solokit and delete this code:
// https://github.com/solo-io/gloo/issues/1793
// todo consider movinng this to solo-projects
// used in enterprise code
func ToGlooRouteMatch(routeMatch *envoy_config_route_v3.RouteMatch) *envoyroute_gloo.RouteMatch {
if routeMatch == nil {
return nil
}
rm := &envoyroute_gloo.RouteMatch{
PathSpecifier: nil, // gets set later in function
CaseSensitive: routeMatch.GetCaseSensitive(),
RuntimeFraction: ToGlooRuntimeFractionalPercent(routeMatch.GetRuntimeFraction()),
Headers: ToGlooHeaders(routeMatch.GetHeaders()),
QueryParameters: ToGlooQueryParameterMatchers(routeMatch.GetQueryParameters()),
Grpc: ToGlooGrpc(routeMatch.GetGrpc()),
}
switch typed := routeMatch.GetPathSpecifier().(type) {
case *envoy_config_route_v3.RouteMatch_Prefix:
rm.PathSpecifier = &envoyroute_gloo.RouteMatch_Prefix{
Prefix: typed.Prefix,
}
case *envoy_config_route_v3.RouteMatch_SafeRegex:
rm.PathSpecifier = &envoyroute_gloo.RouteMatch_Regex{
Regex: typed.SafeRegex.GetRegex(),
}
case *envoy_config_route_v3.RouteMatch_Path:
rm.PathSpecifier = &envoyroute_gloo.RouteMatch_Path{
Path: typed.Path,
}
}
return rm
}
func ToGlooRuntimeFractionalPercent(fp *envoy_config_core_v3.RuntimeFractionalPercent) *envoycore_sk.RuntimeFractionalPercent {
if fp == nil {
return nil
}
return &envoycore_sk.RuntimeFractionalPercent{
DefaultValue: ToGlooFractionalPercent(fp.GetDefaultValue()),
RuntimeKey: fp.GetRuntimeKey(),
}
}
func ToGlooFractionalPercent(fp *envoytype.FractionalPercent) *envoytype_sk.FractionalPercent {
if fp == nil {
return nil
}
glooFp := &envoytype_sk.FractionalPercent{
Numerator: fp.GetNumerator(),
Denominator: envoytype_sk.FractionalPercent_HUNDRED, // gets set later in function
}
switch str := fp.GetDenominator().String(); str {
case envoytype.FractionalPercent_DenominatorType_name[int32(envoytype.FractionalPercent_HUNDRED)]:
glooFp.Denominator = envoytype_sk.FractionalPercent_HUNDRED
case envoytype.FractionalPercent_DenominatorType_name[int32(envoytype.FractionalPercent_TEN_THOUSAND)]:
glooFp.Denominator = envoytype_sk.FractionalPercent_TEN_THOUSAND
case envoytype.FractionalPercent_DenominatorType_name[int32(envoytype.FractionalPercent_MILLION)]:
glooFp.Denominator = envoytype_sk.FractionalPercent_MILLION
}
return glooFp
}
func ToGlooHeaders(headers []*envoy_config_route_v3.HeaderMatcher) []*envoyroute_gloo.HeaderMatcher {
if headers == nil {
return nil
}
result := make([]*envoyroute_gloo.HeaderMatcher, len(headers))
for i, v := range headers {
result[i] = ToGlooHeader(v)
}
return result
}
func ToGlooHeader(header *envoy_config_route_v3.HeaderMatcher) *envoyroute_gloo.HeaderMatcher {
if header == nil {
return nil
}
h := &envoyroute_gloo.HeaderMatcher{
Name: header.GetName(),
HeaderMatchSpecifier: nil, // gets set later in function
InvertMatch: header.GetInvertMatch(),
}
switch specificHeaderSpecifier := header.GetHeaderMatchSpecifier().(type) {
case *envoy_config_route_v3.HeaderMatcher_ExactMatch:
h.HeaderMatchSpecifier = &envoyroute_gloo.HeaderMatcher_ExactMatch{
ExactMatch: specificHeaderSpecifier.ExactMatch,
}
case *envoy_config_route_v3.HeaderMatcher_SafeRegexMatch:
h.HeaderMatchSpecifier = &envoyroute_gloo.HeaderMatcher_RegexMatch{
RegexMatch: specificHeaderSpecifier.SafeRegexMatch.GetRegex(),
}
case *envoy_config_route_v3.HeaderMatcher_RangeMatch:
h.HeaderMatchSpecifier = &envoyroute_gloo.HeaderMatcher_RangeMatch{
RangeMatch: &envoytype_gloo.Int64Range{
Start: specificHeaderSpecifier.RangeMatch.GetStart(),
End: specificHeaderSpecifier.RangeMatch.GetEnd(),
},
}
case *envoy_config_route_v3.HeaderMatcher_PresentMatch:
h.HeaderMatchSpecifier = &envoyroute_gloo.HeaderMatcher_PresentMatch{
PresentMatch: specificHeaderSpecifier.PresentMatch,
}
case *envoy_config_route_v3.HeaderMatcher_PrefixMatch:
h.HeaderMatchSpecifier = &envoyroute_gloo.HeaderMatcher_PrefixMatch{
PrefixMatch: specificHeaderSpecifier.PrefixMatch,
}
case *envoy_config_route_v3.HeaderMatcher_SuffixMatch:
h.HeaderMatchSpecifier = &envoyroute_gloo.HeaderMatcher_SuffixMatch{
SuffixMatch: specificHeaderSpecifier.SuffixMatch,
}
}
return h
}
func ToGlooQueryParameterMatchers(queryParamMatchers []*envoy_config_route_v3.QueryParameterMatcher) []*envoyroute_gloo.QueryParameterMatcher {
if queryParamMatchers == nil {
return nil
}
result := make([]*envoyroute_gloo.QueryParameterMatcher, len(queryParamMatchers))
for i, v := range queryParamMatchers {
result[i] = ToGlooQueryParameterMatcher(v)
}
return result
}
func ToGlooQueryParameterMatcher(queryParamMatcher *envoy_config_route_v3.QueryParameterMatcher) *envoyroute_gloo.QueryParameterMatcher {
if queryParamMatcher == nil {
return nil
}
value := ""
regex := false
switch {
case queryParamMatcher.GetPresentMatch():
case queryParamMatcher.GetStringMatch().GetExact() != "":
value = queryParamMatcher.GetStringMatch().GetExact()
case queryParamMatcher.GetStringMatch().GetSafeRegex() != nil:
value = queryParamMatcher.GetStringMatch().GetSafeRegex().GetRegex()
regex = true
}
qpm := &envoyroute_gloo.QueryParameterMatcher{
Name: queryParamMatcher.GetName(),
Value: value,
}
if regex {
qpm.Regex = &wrappers.BoolValue{
Value: true,
}
}
return qpm
}
func ToGlooGrpc(grpc *envoy_config_route_v3.RouteMatch_GrpcRouteMatchOptions) *envoyroute_gloo.RouteMatch_GrpcRouteMatchOptions {
if grpc == nil {
return nil
}
return &envoyroute_gloo.RouteMatch_GrpcRouteMatchOptions{
// envoy currently doesn't support any options :/
// all the more reason to worry about future regressions with this code ala https://github.com/solo-io/gloo/issues/1793
}
}