Data queries (alerting)

pkg/zabbix/response_models.go

@@ -1,6 +1,12 @@
 package zabbix
 
+import (
+	"fmt"
+	"strings"
+)
+
 type Items []Item
+
 type Item struct {
 	ID        string     `json:"itemid,omitempty"`
 	Key       string     `json:"key_,omitempty"`
@@ -11,12 +17,65 @@ type Item struct {
 	Status    string     `json:"status,omitempty"`
 	State     string     `json:"state,omitempty"`
 }
+
+func (item *Item) ExpandItem() string {
+	name := item.Name
+	key := item.Key
+
+	if strings.Index(key, "[") == -1 {
+		return name
+	}
+
+	keyRunes := []rune(item.Key)
+	keyParamsStr := string(keyRunes[strings.Index(key, "[")+1 : strings.LastIndex(key, "]")])
+	keyParams := splitKeyParams(keyParamsStr)
+
+	for i := len(keyParams); i >= 1; i-- {
+		name = strings.ReplaceAll(name, fmt.Sprintf("$%v", i), keyParams[i-1])
+	}
+
+	return name
+}
+
+func splitKeyParams(paramStr string) []string {
+	paramRunes := []rune(paramStr)
+	params := []string{}
+	quoted := false
+	inArray := false
+	splitSymbol := ","
+	param := ""
+
+	for _, r := range paramRunes {
+		symbol := string(r)
+		if symbol == `"` && inArray {
+			param += symbol
+		} else if symbol == `"` && quoted {
+			quoted = false
+		} else if symbol == `"` && !quoted {
+			quoted = true
+		} else if symbol == "[" && !quoted {
+			inArray = true
+		} else if symbol == "]" && !quoted {
+			inArray = false
+		} else if symbol == splitSymbol && !quoted && !inArray {
+			params = append(params, param)
+			param = ""
+		} else {
+			param += symbol
+		}
+	}
+
+	params = append(params, param)
+	return params
+}
+
 type ItemHost struct {
 	ID   string `json:"hostid,omitempty"`
 	Name string `json:"name,omitempty"`
 }
 
 type Trend []TrendPoint
+
 type TrendPoint struct {
 	ItemID   string `json:"itemid,omitempty"`
 	Clock    int64  `json:"clock,omitempty,string"`
@@ -27,6 +86,7 @@ type TrendPoint struct {
 }
 
 type History []HistoryPoint
+
 type HistoryPoint struct {
 	ItemID string  `json:"itemid,omitempty"`
 	Clock  int64   `json:"clock,omitempty,string"`