feat(vault-namespace): set 'X-Vault-Namespace' when a client has it (#137)

Co-authored-by: Konstantin Matsiushonak <Konstantin_Matsiushonak@epam.com>

Author: kakoc

src/index.js

@@ -69,6 +69,7 @@ module.exports = (config = {}) => {
   client.pathPrefix = config.pathPrefix || process.env.VAULT_PREFIX || '';
   client.token = config.token || process.env.VAULT_TOKEN;
   client.noCustomHTTPVerbs = config.noCustomHTTPVerbs || false;
+  client.namespace = config.namespace || process.env.VAULT_NAMESPACE;
 
   const requestSchema = {
     type: 'object',
@@ -94,6 +95,9 @@ module.exports = (config = {}) => {
     if (typeof client.token === 'string' && client.token.length) {
       options.headers['X-Vault-Token'] = options.headers['X-Vault-Token'] || client.token;
     }
+    if (typeof client.namespace === 'string' && client.namespace.length) {
+      options.headers['X-Vault-Namespace'] = client.namespace;
+    }
     options.uri = uri;
     debug(options.method, uri);
     if (options.json) debug(options.json);

test/unit.js

@@ -125,6 +125,7 @@ describe('node-vault', () => {
       const vaultConfig = {
         endpoint: 'http://localhost:8200',
         token: '123',
+        namespace: 'test',
         'request-promise': {
           defaults: () => request, // dependency injection of stub
         },