Add multierr to Validator

go.mod

@@ -12,4 +12,5 @@ require (
 	github.com/ugorji/go/codec v1.2.6
 	github.com/xmidt-org/httpaux v0.3.0
 	github.com/xmidt-org/webpa-common v1.3.2
+	go.uber.org/multierr v1.8.0
 )

go.sum

@@ -25,6 +25,10 @@ github.com/xmidt-org/httpaux v0.3.0 h1:JdV4QceiE8EMA1Qf5rnJzHdkIPzQV12ddARHLU8hr
 github.com/xmidt-org/httpaux v0.3.0/go.mod h1:mviIlg5fHGb3lAv3l0sbiwVG/q9rqvXaudEYxVrzXdE=
 github.com/xmidt-org/webpa-common v1.3.2 h1:dE1Fi+XVnkt3tMGMjH7/hN/UGcaQ/ukKriXuMDyCWnM=
 github.com/xmidt-org/webpa-common v1.3.2/go.mod h1:oCpKzOC+9h2vYHVzAU/06tDTQuBN4RZz+rhgIXptpOI=
+go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
+go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
+go.uber.org/multierr v1.8.0 h1:dg6GjLku4EH+249NNmoIciG9N/jURbDG+pFlTkhzIC8=
+go.uber.org/multierr v1.8.0/go.mod h1:7EAYxJLBy9rStEaz58O2t4Uvip6FSURkq8/ppBp95ak=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

validator.go

@@ -19,6 +19,8 @@ package wrp
 
 import (
 	"errors"
+
+	"go.uber.org/multierr"
 )
 
 var (
@@ -44,14 +46,12 @@ type Validators []Validator
 // Validate runs messages through each validator in the validators list.
 // It returns as soon as the message is considered invalid, otherwise returns nil if valid.
 func (vs Validators) Validate(m Message) error {
+	var err error
 	for _, v := range vs {
-		err := v.Validate(m)
-		if err != nil {
-			return err
-		}
+		err = multierr.Append(err, v.Validate(m))
 	}
 
-	return nil
+	return err
 }
 
 // ValidatorFunc is a WRP validator that takes messages and validates them