EmailTemplate.java 文件源码

public EmailTemplate() {
    ftlCfg = new Configuration(new Version(FREEMARKER_VERSION));
    try {
        // Check if templates are located from disk or if we are loading default ones.
        String templatesDir = System.getenv(EmailPlugin.HAWKULAR_ALERTS_TEMPLATES);
        templatesDir = templatesDir == null ? System.getProperty(EmailPlugin.HAWKULAR_ALERTS_TEMPLATES_PROPERY)
                : templatesDir;
        boolean templatesFromDir = false;
        if (templatesDir != null) {
            File fileDir = new File(templatesDir);
            if (fileDir.exists()) {
                ftlCfg.setDirectoryForTemplateLoading(fileDir);
                templatesFromDir = true;
            }
        }
        if (!templatesFromDir) {
            ftlCfg.setClassForTemplateLoading(this.getClass(), "/");
        }
        ftlTemplatePlain = ftlCfg.getTemplate(DEFAULT_TEMPLATE_PLAIN, DEFAULT_LOCALE);
        ftlTemplateHtml = ftlCfg.getTemplate(DEFAULT_TEMPLATE_HTML, DEFAULT_LOCALE);
    } catch (IOException e) {
        log.debug(e.getMessage(), e);
        throw new RuntimeException("Cannot initialize templates on email plugin: " + e.getMessage());
    }
}