Add API to get dns record

src/routes/domains.js

@@ -7,6 +7,8 @@ exports = module.exports = {
     update: update,
     del: del,
 
+    getDnsRecord: getDnsRecord,
+
     verifyDomainLock: verifyDomainLock
 };
 
@@ -152,3 +154,18 @@ function del(req, res, next) {
         next(new HttpSuccess(204));
     });
 }
+
+function getDnsRecord(req, res, next) {
+    assert.strictEqual(typeof req.params.domains, 'string');
+
+    if (!('subdomain' in req.query)) return next(new HttpError(400, 'subdomain is required'));
+    if (!('type' in req.query)) return next(new HttpError(400, 'type is required'));
+
+    domains.getDnsRecords(req.query.subdomain, req.params.domain, req.query.type, function (error, result) {
+        if (error && error.reason === DomainsError.NOT_FOUND) return next(new HttpError(404, error.message));
+        if (error && error.reason === DomainsError.EXTERNAL_ERROR) return next(new HttpError(424, error.message));
+        if (error) return next(new HttpError(500, error));
+
+        next(new HttpSuccess(200, result));
+    });
+}