add string split processor

internal/processing/string-split.go

@@ -0,0 +1,51 @@
+package processing
+
+import (
+	"context"
+	"fmt"
+	"strings"
+)
+
+type StringSplit struct {
+	config    ProcessorConfig
+	Separator string
+}
+
+func (se *StringSplit) Process(ctx context.Context, payload any) (any, error) {
+	payloadString, ok := payload.(string)
+
+	if !ok {
+		return nil, fmt.Errorf("string.split only accepts a string")
+	}
+
+	payloadParts := strings.Split(payloadString, se.Separator)
+
+	return payloadParts, nil
+}
+
+func (se *StringSplit) Type() string {
+	return se.config.Type
+}
+
+func init() {
+	RegisterProcessor(ProcessorRegistration{
+		Type: "string.split",
+		New: func(config ProcessorConfig) (Processor, error) {
+			params := config.Params
+
+			separator, ok := params["separator"]
+
+			if !ok {
+				return nil, fmt.Errorf("string.split requires a separator")
+			}
+
+			separatorString, ok := separator.(string)
+
+			if !ok {
+				return nil, fmt.Errorf("string.split separator must be a string")
+			}
+
+			return &StringSplit{config: config, Separator: separatorString}, nil
+		},
+	})
+}