Added helpers for some predicates and filters

Signed-off-by: Peter Klijn <[email protected]>

filters/helpers.go

@@ -0,0 +1,50 @@
+package filters
+
+import (
+	"github.com/zalando/skipper/eskip"
+	"github.com/zalando/skipper/filters/builtin"
+	"github.com/zalando/skipper/filters/cookie"
+	"strconv"
+)
+
+func Status(statusCode int) *eskip.Filter {
+	return &eskip.Filter{
+		Name: builtin.StatusName,
+		Args: []interface{}{statusCode},
+	}
+}
+
+func InlineContent(text string) *eskip.Filter {
+	return &eskip.Filter{
+		Name: builtin.InlineContentName,
+		Args: []interface{}{text},
+	}
+}
+
+func InlineContentWithMime(text, mime string) *eskip.Filter {
+	return &eskip.Filter{
+		Name: builtin.InlineContentName,
+		Args: []interface{}{text, mime},
+	}
+}
+
+func PreserveHost(preserve bool) *eskip.Filter {
+	return &eskip.Filter{
+		Name: builtin.PreserveHostName,
+		Args: []interface{}{strconv.FormatBool(preserve)},
+	}
+}
+
+func ResponseCookie(name, value string) *eskip.Filter {
+	return &eskip.Filter{
+		Name: cookie.ResponseCookieFilterName,
+		Args: []interface{}{name, value},
+	}
+}
+
+func ResponseCookieWithSettings(name, value string, ttl float64, changeOnly bool) *eskip.Filter {
+	return &eskip.Filter{
+		Name: cookie.ResponseCookieFilterName,
+		Args: []interface{}{name, value, ttl, changeOnly},
+	}
+}

predicates/helpers.go

@@ -0,0 +1,28 @@
+package predicates
+
+import (
+	"github.com/zalando/skipper/eskip"
+	"github.com/zalando/skipper/predicates/traffic"
+	"github.com/zalando/skipper/routing"
+)
+
+func Path(path string) *eskip.Predicate {
+	return &eskip.Predicate{
+		Name: routing.PathName,
+		Args: []interface{}{path},
+	}
+}
+
+func Traffic(chance float64) *eskip.Predicate {
+	return &eskip.Predicate{
+		Name: traffic.PredicateName,
+		Args: []interface{}{chance},
+	}
+}
+
+func TrafficSticky(chance float64, trafficGroupCookie, trafficGroup string) *eskip.Predicate {
+	return &eskip.Predicate{
+		Name: traffic.PredicateName,
+		Args: []interface{}{chance, trafficGroupCookie, trafficGroup},
+	}
+}