// match: Match a simple pattern match and return matched value
//
// given input:
// {"score_value":24,"event_click":true}
//
// match("score_") => {"value":24}
// match("amount_") => false
// match("event_") => {"click":true}
//
func Match(ctx expr.EvalContext, items ...value.Value) (value.MapValue, bool) {
//u.Debugf("Match(): %T %v", item, item)
mv := make(map[string]interface{})
for _, item := range items {
switch node := item.(type) {
case value.StringValue:
matchKey := node.Val()
for rowKey, val := range ctx.Row() {
if strings.HasPrefix(rowKey, matchKey) && val != nil {
newKey := strings.Replace(rowKey, matchKey, "", 1)
if newKey != "" {
mv[newKey] = val
}
}
}
default:
u.Warnf("unsuported key type: %T %v", item, item)
}
}
if len(mv) > 0 {
//u.Infof("found new: %v", mv)
return value.NewMapValue(mv), true
}
//u.Warnf("could not find key: %T %v", item, item)
return value.EmptyMapValue, false
}
// Map() Create a map from two values. If the right side value is nil
// then does not evaluate
//
// Map(left, right) => map[string]value{left:right}
//
func MapFunc(ctx expr.EvalContext, lv, rv value.Value) (value.MapValue, bool) {
if lv.Err() || rv.Err() {
return value.EmptyMapValue, false
}
if lv.Nil() || rv.Nil() {
return value.EmptyMapValue, false
}
return value.NewMapValue(map[string]interface{}{lv.ToString(): rv.Value()}), true
}
func TestStructWrapper(t *testing.T) {
t1, _ := dateparse.ParseAny("12/18/2015")
tr := true
user := &User{
Name: "Yoda",
Created: t1,
Updated: &t1,
Authenticated: true,
HasSession: &tr,
Roles: []string{"admin", "api"},
BankAmount: 55.5,
}
readers := []expr.ContextReader{
datasource.NewContextWrapper(user),
datasource.NewContextSimpleNative(map[string]interface{}{
"str1": "str1",
"int1": 1,
"t1": t1,
"Name": "notyoda",
}),
}
nc := datasource.NewNestedContextReader(readers, time.Now())
expected := value.NewMapValue(map[string]interface{}{
"str1": "str1",
"int1": 1,
"Name": "Yoda",
"Authenticated": true,
"bankamount": 55.5,
"FullName": "Yoda, Jedi",
"Roles": []string{"admin", "api"},
})
for k, v := range expected.Val() {
//u.Infof("k:%v v:%#v", k, v)
checkval(t, nc, k, v)
}
}
// TODO: {`any(0)`, value.BoolValueFalse},
{`any("value")`, value.BoolValueTrue},
{`any(event)`, value.BoolValueTrue},
{`any(notrealfield)`, value.BoolValueFalse},
{`all("Apple")`, value.BoolValueTrue},
{`all("Apple")`, value.BoolValueTrue},
{`all("Apple",event)`, value.BoolValueTrue},
{`all("Apple",event,true)`, value.BoolValueTrue},
{`all("Apple",event)`, value.BoolValueTrue},
{`all("Linux",true,not_a_realfield)`, value.BoolValueFalse},
{`all("Linux",false)`, value.BoolValueFalse},
{`all("Linux","")`, value.BoolValueFalse},
{`all("Linux",notreal)`, value.BoolValueFalse},
{`match("score_")`, value.NewMapValue(map[string]interface{}{"amount": "22"})},
{`match("score_","tag_")`, value.NewMapValue(map[string]interface{}{"amount": "22", "name": "bob"})},
{`match("nonfield_")`, value.ErrValue},
{`email("*****@*****.**")`, value.NewStringValue("*****@*****.**")},
{`email("Bob <bob>")`, value.ErrValue},
{`email("Bob <*****@*****.**>")`, value.NewStringValue("*****@*****.**")},
{`oneof(not_a_field, email("Bob <*****@*****.**>"))`, value.NewStringValue("*****@*****.**")},
{`oneof(email, email(not_a_field))`, value.NewStringValue("*****@*****.**")},
{`oneof(email, email(not_a_field)) NOT IN ("a","b",10, 4.5) `, value.NewBoolValue(true)},
{`oneof(email, email(not_a_field)) IN ("*****@*****.**","b",10, 4.5) `, value.NewBoolValue(true)},
{`oneof(email, email(not_a_field)) IN ("b",10, 4.5) `, value.NewBoolValue(false)},
{`emailname("Bob<*****@*****.**>")`, value.NewStringValue("Bob")},
// FilterFunc Filter out Values that match specified list of match filter criteria
//
// - Operates on MapValue (map[string]interface{}), StringsValue ([]string), or string
// - takes N Filter Criteria
// - supports Matching: "filter*" // matches "filter_x", "filterstuff"
//
// -- Filter a map of values by key to remove certain keys
// filter(match("topic_"),key_to_filter, key2_to_filter) => {"goodkey": 22}, true
//
// -- Filter out VALUES (not keys) from a list of []string{} for a specific value
// filter(split("apples,oranges",","),"ora*") => ["apples"], true
//
// -- Filter out values for single strings
// filter("apples","app*") => []string{}, true
//
func FilterFunc(ctx expr.EvalContext, val value.Value, filterVals ...value.Value) (value.Value, bool) {
filters := FiltersFromArgs(filterVals)
//u.Debugf("Filter(): %T:%v filters:%v", val, val, filters)
switch val := val.(type) {
case value.MapValue:
mv := make(map[string]interface{})
for rowKey, v := range val.Val() {
filteredOut := false
for _, filter := range filters {
if strings.Contains(filter, "*") {
match, _ := glob.Match(filter, rowKey)
if match {
filteredOut = true
break
}
} else {
if strings.HasPrefix(rowKey, filter) && v != nil {
filteredOut = true
break
}
}
}
if !filteredOut {
mv[rowKey] = v.Value()
}
}
return value.NewMapValue(mv), true
case value.StringValue:
anyMatches := false
for _, filter := range filters {
if strings.Contains(filter, "*") {
match, _ := glob.Match(filter, val.Val())
if match {
anyMatches = true
break
}
} else {
if strings.HasPrefix(val.Val(), filter) {
anyMatches = true
break
}
}
}
if anyMatches {
return value.NilValueVal, true
}
return val, true
case value.StringsValue:
lv := make([]string, 0, val.Len())
for _, sv := range val.Val() {
filteredOut := false
for _, filter := range filters {
if strings.Contains(filter, "*") {
match, _ := glob.Match(filter, sv)
if match {
filteredOut = true
break
}
} else {
if strings.HasPrefix(sv, filter) && sv != "" {
filteredOut = true
break
}
}
}
if !filteredOut {
lv = append(lv, sv)
}
}
return value.NewStringsValue(lv), true
default:
u.Warnf("unsuported key type: %T %v", val, val)
}
//u.Warnf("could not find key: %T %v", item, item)
return nil, false
}
// TODO: {`any(0)`, value.BoolValueFalse},
{`any("value")`, value.BoolValueTrue},
{`any(event)`, value.BoolValueTrue},
{`any(notrealfield)`, value.BoolValueFalse},
{`all("Apple")`, value.BoolValueTrue},
{`all("Apple")`, value.BoolValueTrue},
{`all("Apple",event)`, value.BoolValueTrue},
{`all("Apple",event,true)`, value.BoolValueTrue},
{`all("Apple",event)`, value.BoolValueTrue},
{`all("Linux",true,not_a_realfield)`, value.BoolValueFalse},
{`all("Linux",false)`, value.BoolValueFalse},
{`all("Linux","")`, value.BoolValueFalse},
{`all("Linux",notreal)`, value.BoolValueFalse},
{`match("score_")`, value.NewMapValue(map[string]interface{}{"amount": "22"})},
{`match("nonfield_")`, value.ErrValue},
{`email("*****@*****.**")`, value.NewStringValue("*****@*****.**")},
{`email("Bob <bob>")`, value.ErrValue},
{`email("Bob <*****@*****.**>")`, value.NewStringValue("*****@*****.**")},
{`oneof(not_a_field, email("Bob <*****@*****.**>"))`, value.NewStringValue("*****@*****.**")},
{`oneof(email, email(not_a_field))`, value.NewStringValue("*****@*****.**")},
{`emailname("Bob<*****@*****.**>")`, value.NewStringValue("Bob")},
{`emaildomain("Bob<*****@*****.**>")`, value.NewStringValue("gmail.com")},
{`host("https://www.Google.com/search?q=golang")`, value.NewStringValue("www.google.com")},
{`host("www.Google.com/?q=golang")`, value.NewStringValue("www.google.com")},
//{`host("notvalid")`, value.NewStringValue("notvalid")},