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regex.go
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regex.go
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package regexutils
import (
"context"
envoy_type_matcher_v3 "github.com/envoyproxy/go-control-plane/envoy/type/matcher/v3"
wrappers "github.com/golang/protobuf/ptypes/wrappers"
"github.com/solo-io/gloo/pkg/utils/settingsutil"
v1 "github.com/solo-io/gloo/projects/gloo/pkg/api/v1"
)
func NewRegex(ctx context.Context, regex string) *envoy_type_matcher_v3.RegexMatcher {
settings := settingsutil.MaybeFromContext(ctx)
return NewRegexFromSettings(settings, regex)
}
func NewRegexFromSettings(settings *v1.Settings, regex string) *envoy_type_matcher_v3.RegexMatcher {
var programsize *uint32
if settings != nil {
if max_size := settings.GetGloo().GetRegexMaxProgramSize(); max_size != nil {
programsize = &max_size.Value
}
}
return NewRegexWithProgramSize(regex, programsize)
}
func NewRegexWithProgramSize(regex string, programsize *uint32) *envoy_type_matcher_v3.RegexMatcher {
var maxProgramSize *wrappers.UInt32Value
if programsize != nil {
maxProgramSize = &wrappers.UInt32Value{
Value: *programsize,
}
}
return &envoy_type_matcher_v3.RegexMatcher{
EngineType: &envoy_type_matcher_v3.RegexMatcher_GoogleRe2{
GoogleRe2: &envoy_type_matcher_v3.RegexMatcher_GoogleRE2{MaxProgramSize: maxProgramSize},
},
Regex: regex,
}
}