get error message from soap message

internal/codec.go

@@ -84,6 +84,7 @@ const (
 `
 
 	msgExp = `<ns1:string>.*<\/ns1:string>`
+	errExp = `<errorMessage .*<\/errorMessage>`
 )
 
 // CreateSend xml string for sending
@@ -122,6 +123,17 @@ func GetMsgs(soap string) []string {
 	return Map(msgs, split)
 }
 
+//GetErrMsg get error message
+func GetErrMsg(soap string) string {
+	r, _ := regexp.Compile(errExp)
+	msg := r.FindAllString(soap, -1)
+	if len(msg) > 0 && len(msg[0]) > 40 {
+		size := len(msg[0])
+		return msg[0][54 : size-15]
+	}
+	return msg[0]
+}
+
 func split(msg string) string {
 	if len(msg) > 12 {
 		return msg[12 : len(msg)-13]

internal/codec_test.go

@@ -92,6 +92,8 @@ const (
   </soap:Envelope>`
 
 	Msg string = `<?xml version="1.0" encoding="UTF-8"?> <msg xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="unisysaodbsis.xsd">   <meta>     <sndr>AODB</sndr>     <seqn>820830</seqn>     <dttm>20180527124442</dttm>     <type>FLOP</type>     <styp>ESTT</styp>   </meta>   <flop>     <flid>10725849</flid>     <ffid>CA-CA4242-A-27MAY181955-D</ffid>     <estt>27MAY181945</estt>   </flop> </msg>`
+
+	ErrMsg string = `<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><soap:Body><soap:Fault><faultcode>soap:Server</faultcode><faultstring>invalid route envent id </faultstring><detail><BHIAFault xmlns="http://ciims.bhia.itdcl.com"><code xmlns="http://msg.ciims.bhia.itdcl.com">20</code><errorMessage xmlns="http://msg.ciims.bhia.itdcl.com">Can not find the event [FLOP-ESTT-ATC-ALL1]</errorMessage></BHIAFault></detail></soap:Fault></soap:Body></soap:Envelope>`
 )
 
 func TestSend(t *testing.T) {
@@ -118,3 +120,9 @@ func TestGetMsg(t *testing.T) {
 	assert.Equal(2, len(msgs), "should get 2 message")
 	assert.Equal(Msg, msgs[0], "message")
 }
+
+func TestGetErrMsg(t *testing.T) {
+	assert := assert.New(t)
+	errMsg := GetErrMsg(ErrMsg)
+	assert.Equal("Can not find the event [FLOP-ESTT-ATC-ALL1]", errMsg)
+}