feat: sentry integration

ref #3

internal/config/environment.go

@@ -53,6 +53,29 @@ func (ii *InterpolatedInt) UnmarshalYAML(value *yaml.Node) error {
 	return nil
 }
 
+type InterpolatedFloat float64
+
+func (ifl *InterpolatedFloat) UnmarshalYAML(value *yaml.Node) error {
+	var str string
+
+	if err := value.Decode(&str); err != nil {
+		return errors.Wrapf(err, "could not decode value '%v' (line '%d') into string", value.Value, value.Line)
+	}
+
+	if match := reVar.FindStringSubmatch(str); len(match) > 0 {
+		str = os.Getenv(match[1])
+	}
+
+	floatVal, err := strconv.ParseFloat(str, 10)
+	if err != nil {
+		return errors.Wrapf(err, "could not parse float '%v',  line '%d'", str, value.Line)
+	}
+
+	*ifl = InterpolatedFloat(floatVal)
+
+	return nil
+}
+
 type InterpolatedBool bool
 
 func (ib *InterpolatedBool) UnmarshalYAML(value *yaml.Node) error {