feat(index): adds new function to append cloud functions service bind…

… credentials

index.js

@@ -74,6 +74,35 @@ const getCredentialsFromLocalConfig = function(serviceLabel, credentials) {
   return creds;
 }
 
+/**
+* Helper function used to add credentials bound to cloud functions using wsk service bind
+*
+* @param {Object} theParams - parameters sent to service
+* @param {string} service - name of service in bluemix used to retrieve credentials, used for IAM instances
+* @param {string} serviceAltName - alternate name of service used for cloud foundry instances
+* @return {Object} - returns parameters modified to include credentials from service bind
+*/
+const addCredentialsFromServiceBind = function(theParams, service, serviceAltName) {
+  if (Object.keys(theParams).length === 0) {
+    return theParams;
+  }
+  let bxCreds = {};
+  if (theParams.__bx_creds && theParams.__bx_creds[service]) {
+    // If user has IAM instance of service
+    bxCreds = theParams.__bx_creds[service];
+  } else if (theParams.__bx_creds && theParams.__bx_creds[serviceAltName]) {
+    // If user has no IAM instance of service, check for CF instances
+    bxCreds = theParams.__bx_creds[serviceAltName];
+  }
+  const _params = Object.assign({}, bxCreds, theParams);
+  if (_params.apikey) {
+    _params.iam_apikey = _params.apikey;
+    delete _params.apikey;
+  }
+  delete _params.__bx_creds;
+  return _params;
+}
+
 /**
  * Returns all the credentials that match the service label from env variables
  *
@@ -98,4 +127,5 @@ module.exports = {
   getCredentials,
   getCredentialsFromLocalConfig,
   getCredentialsForStarter,
+  addCredentialsFromServiceBind,
 };