add processes to parse strings into various number

internal/processing/float-parse.go

@@ -0,0 +1,39 @@
+package processing
+
+import (
+	"context"
+	"fmt"
+	"strconv"
+)
+
+type FloatParse struct {
+	config ProcessorConfig
+}
+
+func (fp *FloatParse) Process(ctx context.Context, payload any) (any, error) {
+	payloadString, ok := payload.(string)
+
+	if !ok {
+		return nil, fmt.Errorf("float.parse processor only accepts a string")
+	}
+
+	// TODO(jwetzell): make bitSize configurable
+	payloadFloat, err := strconv.ParseFloat(payloadString, 64)
+	if err != nil {
+		return nil, err
+	}
+	return payloadFloat, nil
+}
+
+func (fp *FloatParse) Type() string {
+	return fp.config.Type
+}
+
+func init() {
+	RegisterProcessor(ProcessorRegistration{
+		Type: "float.parse",
+		New: func(config ProcessorConfig) (Processor, error) {
+			return &FloatParse{config: config}, nil
+		},
+	})
+}