3.5.2

* chore: update LTS status to End-of-Life (Rifa Achrinza)

.github/ISSUE_TEMPLATE.md

@@ -1,36 +0,0 @@
-<!--
-- Please ask questions at https://groups.google.com/forum/#!forum/loopbackjs or
-  https://gitter.im/strongloop/loopback
-
-- Immediate support is available through our subscription plans, see
-  https://strongloop.com/api-connect-faqs/
--->
-
-### Bug or feature request
-
-<!--
-Mark your choice with an "x" (eg. [x], NOT [*]).
--->
-
-- [ ] Bug
-- [ ] Feature request
-
-### Description of feature (or steps to reproduce if bug)
-
-
-
-### Link to sample repo to reproduce issue (if bug)
-
-
-
-### Expected result
-
-
-
-### Actual result (if bug)
-
-
-
-### Additional information (Node.js version, LoopBack version, etc)
-
-

.github/ISSUE_TEMPLATE/Bug_report.md

@@ -0,0 +1,50 @@
+---
+name: Bug report
+about: Create a report to help us improve
+labels: bug
+
+---
+
+<!-- 🚨 STOP 🚨 STOP 🚨 STOP 🚨
+
+HELP US HELP YOU, PLEASE
+- Do a quick search to avoid duplicate issues
+- Provide as much information as possible (reproduction sandbox, use case for features, etc.)
+- Consider using a more suitable venue for questions such as Stack Overflow, Gitter, etc.
+
+Please fill in the *entire* template below.
+
+-->
+
+## Steps to reproduce
+
+<!-- Describe how to reproduce the issue -->
+
+## Current Behavior
+
+<!-- Describe the observed result -->
+
+## Expected Behavior
+
+<!-- Describe what did you expect instead, what is the desired outcome? -->
+
+## Link to reproduction sandbox
+
+<!--
+See https://loopback.io/doc/en/contrib/Reporting-issues.html#loopback-3x-bugs
+Note: Failure to provide a sandbox application for reproduction purposes will result in the issue being closed.
+-->
+
+## Additional information
+
+<!--
+Copy+paste the output of these two commands:
+  node -e 'console.log(process.platform, process.arch, process.versions.node)'
+  npm ls --prod --depth 0 | grep loopback
+-->
+
+## Related Issues
+
+<!-- Did you find other bugs that looked similar? -->
+
+_See [Reporting Issues](http://loopback.io/doc/en/contrib/Reporting-issues.html) for more tips on writing good issues_

.github/ISSUE_TEMPLATE/Feature_request.md

@@ -0,0 +1,25 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+labels: feature
+
+---
+
+## Suggestion
+
+<!-- A summary of what you'd like to see added or changed -->
+
+## Use Cases
+
+<!--
+What do you want to use this for?
+What shortcomings exist with current approaches?
+-->
+
+## Examples
+
+<!-- Show how this would be used and what the behavior would be -->
+
+## Acceptance criteria
+
+TBD - will be filled by the team.

.github/ISSUE_TEMPLATE/Question.md

@@ -0,0 +1,27 @@
+---
+name: Question
+about: The issue tracker is not for questions. Please use Stack Overflow or other resources for help.
+labels: question
+
+---
+
+<!-- 🚨 STOP 🚨 STOP 🚨 STOP 🚨
+
+THE ISSUE TRACKER IS NOT FOR QUESTIONS.
+
+DO NOT CREATE A NEW ISSUE TO ASK A QUESTION.
+
+Please use one of the following resources for help:
+
+**Questions**
+
+- https://stackoverflow.com/tags/loopbackjs
+- https://groups.google.com/forum/#!forum/loopbackjs
+- https://gitter.im/strongloop/loopback
+
+**Immediate support**
+
+- https://strongloop.com/api-connect-faqs/
+- https://strongloop.com/node-js/subscription-plans/
+
+-->

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,11 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Report a security vulnerability
+    url: https://loopback.io/doc/en/contrib/Reporting-issues.html#security-issues
+    about: Do not report security vulnerabilities using GitHub issues. Please send an email to `reachsl@us.ibm.com` instead.
+  - name: Get help on StackOverflow
+    url: https://stackoverflow.com/tags/loopbackjs
+    about: Please ask and answer questions on StackOverflow.
+  - name: Join our mailing list
+    url: https://groups.google.com/forum/#!forum/loopbackjs
+    about: You can also post your question to our mailing list.

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,24 +1,18 @@
-### Description
-
-
-#### Related issues
-
 <!--
-Please use the following link syntaxes:
+Please provide a high-level description of the changes made by your pull request.
 
-- #49 (to reference issues in the current repository)
+Include references to all related GitHub issues and other pull requests, for example:
-- strongloop/loopback#49 (to reference issues in another repository)
+
+Fixes #123
+Implements #254
+See also #23
 -->
 
-- None
+## Checklist
 
-### Checklist
+👉 [Read and sign the CLA (Contributor License Agreement)](https://cla.strongloop.com/agreements/strongloop/loopback-context) 👈
-
-<!--
-Please mark your choice with an "x" (i.e. [x], see
-https://github.com/blog/1375-task-lists-in-gfm-issues-pulls-comments)
--->
 
+- [ ] `npm test` passes on your machine
 - [ ] New tests added or existing tests modified to cover all changes
-- [ ] Code conforms with the [style
+- [ ] Code conforms with the [style guide](https://loopback.io/doc/en/contrib/style-guide-es6.html)
-  guide](http://loopback.io/doc/en/contrib/style-guide.html)
+- [ ] Commit messages are following our [guidelines](https://loopback.io/doc/en/contrib/git-commit-messages.html)

.github/stale.yml

@@ -0,0 +1,24 @@
+# Number of days of inactivity before an issue becomes stale
+daysUntilStale: 60
+# Number of days of inactivity before a stale issue is closed
+daysUntilClose: 14
+# Issues with these labels will never be considered stale
+exemptLabels:
+  - pinned
+  - security
+  - critical
+  - p1
+  - major
+  - good first issue
+# Label to use when marking an issue as stale
+staleLabel: stale
+# Comment to post when marking an issue as stale. Set to `false` to disable
+markComment: >
+  This issue has been automatically marked as stale because it has not had
+  recent activity. It will be closed if no further activity occurs. Thank you
+  for your contributions.
+# Comment to post when closing a stale issue. Set to `false` to disable
+closeComment: >
+  This issue has been closed due to continued inactivity. Thank you for your understanding.
+  If you believe this to be in error, please contact one of the code owners,
+  listed in the `CODEOWNERS` file at the top-level of this repository.

.travis.yml

@@ -1,5 +1,6 @@
 sudo: false
 language: node_js
 node_js:
-  - "4"
+  - "8"
-  - "6"
+  - "10"
+  - "12"

CHANGES.md

@@ -1,3 +1,69 @@
+2021-01-19, Version 3.5.2
+=========================
+
+ * chore: update LTS status to End-of-Life (Rifa Achrinza)
+
+
+2020-03-06, Version 3.5.1
+=========================
+
+ * Update LTS status in README (Miroslav Bajtoš)
+
+
+2020-02-17, Version 3.5.0
+=========================
+
+ * Add support for Node.js 12 (Ahmet Cetin)
+
+ * chore: enable stalebot (Diana Lau)
+
+ * chore: improve issue and PR templates (Nora)
+
+ * Drop support for Node.js 6.x (Miroslav Bajtoš)
+
+ * chore: update copyrights years (Agnes Lin)
+
+
+2019-01-02, Version 3.4.0
+=========================
+
+ * Travis: enable Node.js 10.x (Miroslav Bajtoš)
+
+ * Node version ^10.14 added to engines list (Ahmet Cetin)
+
+ * add lts annoucement (jannyHou)
+
+ * Upgrade dependecies, fix new linter errors (Miroslav Bajtoš)
+
+ * Drop support for Node.js 4.x, 5.x and 7.x (Miroslav Bajtoš)
+
+ * Create Issue and PR Templates (#36) (Sakib Hasan)
+
+ * Add CODEOWNERS file (Diana Lau)
+
+
+2017-07-21, Version 3.3.0
+=========================
+
+ * add nodejs v8.2.1 support (Oleg Kubrakov)
+
+
+2017-07-10, Version 3.2.0
+=========================
+
+ * Add Node.js 7 to package.json and .travis.yml (Edgars Zagorskis)
+
+
+2017-03-17, Version 3.1.0
+=========================
+
+ * fix typo in readme (biniam)
+
+ * Add bind option to getCurrentContext() (Emiliano Daddario)
+
+ * Upgrade eslint & config to latest (Miroslav Bajtoš)
+
+
 2017-01-06, Version 3.0.0
 =========================
 

CODEOWNERS

@@ -0,0 +1,6 @@
+# Lines starting with '#' are comments.
+# Each line is a file pattern followed by one or more owners,
+# the last matching pattern has the most precendence.
+
+# Core team members from IBM
+* @bajtos @josieusa

CONTRIBUTING.md

@@ -1,9 +1,9 @@
 ### Contributing ###
 
-Thank you for your interest in `loopback-context-cls`, an open source project
+Thank you for your interest in `loopback-context`, an open source project
 administered by StrongLoop.
 
-Contributing to `loopback-context-cls` is easy. In a few simple steps:
+Contributing to `loopback-context` is easy. In a few simple steps:
 
   * Ensure that your effort is aligned with the project's roadmap by
     talking to the maintainers, especially if you are going to spend a

README.md

@@ -1,5 +1,17 @@
 # loopback-context
 
+**⚠️ LoopBack 3 has reached end of life. We are no longer accepting pull requests or providing 
+support for community users. The only exception is fixes for critical bugs and security 
+vulnerabilities provided as part of support for IBM API Connect customers. (See
+[Module Long Term Support Policy](#module-long-term-support-policy) below.)**
+
+We urge all LoopBack 3 users to migrate their applications to LoopBack 4 as
+soon as possible. Refer to our
+[Migration Guide](https://loopback.io/doc/en/lb4/migration-overview.html)
+for more information on how to upgrade.
+
+## Overview
+
 Current context for LoopBack applications, based on cls-hooked.
 
 ## WARNING
@@ -8,10 +20,15 @@ Current context for LoopBack applications, based on cls-hooked.
 
 ### Known issues
 
- - [when](https://www.npmjs.com/package/when), a popular Promise
+- [when](https://www.npmjs.com/package/when), a popular Promise
    implementation, breaks context propagation. Please consider using the
    built-in `Promise` implementation provided by Node.js or
    [Bluebird](https://www.npmjs.com/package/bluebird) instead.
+- Express middleware chains which contain a "bad" middleware (i.e. one which
+  breaks context propagation inside its function body, in a way mentioned in
+  this doc) especially if called before other "good" ones needs refactoring,
+  in order to prevent the context from getting mixed up among HTTP requests.
+  See usage below for details.
 
    Discussion: https://github.com/strongloop/loopback-context/issues/17
 
@@ -27,7 +44,7 @@ $ npm install --save loopback-context cls-hooked
 ```
 
 Make sure you are running on a Node.js version supported by this module
-(`^4.5`, `^5.10` or `^6.0`). When installing, check the output of `npm install`
+(`^4.5`, `^5.10`, `^6.0`, `^7.0`, `^8.2.1` or `^10.14`). When installing, check the output of `npm install`
 and make sure there are no `engine` related warnings.
 
 ## Usage
@@ -62,7 +79,6 @@ This approach should be compatible with all process managers, including
 `strong-pm`. However, we feel that relying on the order of `require` statements
 is error-prone.
 
-
 ### Configure context propagation
 
 To setup your LoopBack application to create a new context for each incoming
@@ -114,6 +130,48 @@ MyModel.myMethod = function(cb) {
 });
 ```
 
+### Bind for concurrency
+
+In order to workaround the aforementioned concurrency issue with `when` (and
+similar `Promise`-like and other libraries implementing custom queues and/or
+connection pools), it's recommended to activate context binding inside each
+HTTP request or concurrent `runInContext()` call, by using the `bind` option, as
+in this example:
+
+    var ctx = LoopBackContext.getCurrentContext({ bind: true });
+
+With the option enabled, this both creates the context, and binds the access
+methods of the context (i.e. `get` and `set`), at once.
+
+**Warning**: this only works if it's **the first expression evaluated** in every
+middleware/operation hook/`runInContext()` call etc. that uses
+`getCurrentContext`. (It must be the first expression; it may not be enough if
+it's at the first line). Explanation: you must bind the context while it's still
+correct, i.e. before it gets mixed up between concurrent operations affected by
+bugs. Therefore, to be sure, you must bind it before *any* operation.
+
+Also, with respect to the "bad", context-breaking middleware use case mentioned in "Known issues"
+before, the following 2 lines need to be present at the beginning of the middleware
+body. At least the "bad" one; but, as a preventive measure, they can be present
+in every other middleware of every chain as well, being backward-compatible:
+
+     var badMiddleware = function(req, res, next) {
+       // these 2 lines below are needed
+       var ctx = LoopBackContext.getCurrentContext({bind: true});
+       next = ctx.bind(next);
+       ...
+
+The `bind` option defaults to `false`. This is only in order to prevent breaking
+legacy apps; but if your app doesn't have such issue, then you can safely use
+`bind: true` everywhere in your app (e.g. with a
+[codemod](https://github.com/facebook/jscodeshift), or by monkey-patching
+`getCurrentContext()` globally, if you prefer an automated fashion).
+
+**Warning**: this only applies to application modules. In fact, if the module
+affected by the concurrency issue is of this kind, you can easily refactor/write
+your own code so to enable `bind`. Not if it's a 3rd-party module, nor a
+Loopback non-core module, unless you fork and fix it.
+
 ### Use current authenticated user in remote methods
 
 In advanced use cases, for example when you want to add custom middleware, you
@@ -163,7 +221,7 @@ module.exports = function(options) {
     "loopback#token": {}
   },
   "auth:after": {
-    "./middleware/set-current-user": {}
+    "./middleware/store-current-user": {}
   }
 }
 ```
@@ -184,3 +242,14 @@ module.exports = function(YourModel) {
   ...
 };
 ```
+
+## Module Long Term Support Policy
+
+This module adopts the [Module Long Term Support (LTS)](http://github.com/CloudNativeJS/ModuleLTS) policy, with the following End Of Life (EOL) dates:
+
+| Version | Status          | Published | EOL      |
+| ------- | --------------- | --------- | -------- |
+| 3.x     | End-of-Life     | Jan 2017  | Dec 2020 |
+| 1.x     | End-of-Life     | Aug 2016  | Apr 2019 |
+
+Learn more about our LTS plan in the [docs](https://loopback.io/doc/en/contrib/Long-term-support.html).

browser/current-context.js

@@ -1,5 +1,5 @@
-// Copyright IBM Corp. 2015. All Rights Reserved.
+// Copyright IBM Corp. 2016. All Rights Reserved.
-// Node module: loopback-context-cls
+// Node module: loopback-context
 // This file is licensed under the MIT License.
 // License text available at https://opensource.org/licenses/MIT
 

example/app.js

@@ -1,4 +1,4 @@
-// Copyright IBM Corp. 2014,2016. All Rights Reserved.
+// Copyright IBM Corp. 2016. All Rights Reserved.
 // Node module: loopback-context
 // This file is licensed under the MIT License.
 // License text available at https://opensource.org/licenses/MIT

package.json

@@ -1,9 +1,9 @@
 {
   "name": "loopback-context",
-  "version": "3.0.0",
+  "version": "3.5.2",
   "description": "Current context for LoopBack applications, based on cls-hooked",
   "engines": {
-    "node": "^4.5 || ^5.10 || ^6.0"
+    "node": "^8.2.1 || ^10.14 || ^12.15"
   },
   "keywords": [
     "StrongLoop",
@@ -23,16 +23,18 @@
   },
   "license": "MIT",
   "dependencies": {
-    "cls-hooked": "^4.0.1"
+    "cls-hooked": "^4.2.0"
   },
   "devDependencies": {
-    "async": "1.5.2",
+    "async-1.5.2": "file:./test/stub-modules/async-1.5.2",
-    "chai": "^3.5.0",
+    "chai": "^4.1.2",
-    "dirty-chai": "^1.2.2",
+    "dirty-chai": "^2.0.1",
-    "eslint": "^2.13.1",
+    "eslint": "^5.0.1",
-    "eslint-config-loopback": "^4.0.0",
+    "eslint-config-loopback": "^10.0.0",
     "loopback": "^3.0.0",
-    "mocha": "^2.5.3",
+    "mocha": "^5.2.0",
-    "supertest": "^1.2.0"
+    "supertest": "^3.1.0",
-  }
+    "when-3.7.7": "file:./test/stub-modules/when-3.7.7"
+  },
+  "author": "IBM Corp."
 }

server/current-context.js

@@ -1,5 +1,5 @@
-// Copyright IBM Corp. 2015,2016. All Rights Reserved.
+// Copyright IBM Corp. 2016,2017. All Rights Reserved.
-// Node module: loopback-context-cls
+// Node module: loopback-context
 // This file is licensed under the MIT License.
 // License text available at https://opensource.org/licenses/MIT
 
@@ -14,9 +14,13 @@ var LoopBackContext = module.exports;
  * Get the current context object. The context is preserved
  * across async calls, it behaves like a thread-local storage.
  *
+ * @options {Object} [options]
+ * @property {Boolean} bind Bind get/set/bind methods of the context to the
+ * context that's current at the time getCurrentContext() is invoked. This
+ * can be used to work around 3rd party code breaking CLS context propagation.
  * @returns {Namespace} The context object or null.
  */
-LoopBackContext.getCurrentContext = function() {
+LoopBackContext.getCurrentContext = function(options) {
   // A placeholder method, see LoopBackContext.createContext() for the real version
   return null;
 };
@@ -77,8 +81,27 @@ LoopBackContext.createContext = function(scopeName) {
     ns = cls.createNamespace(scopeName);
     process.context[scopeName] = ns;
     // Set up LoopBackContext.getCurrentContext()
-    LoopBackContext.getCurrentContext = function() {
+    LoopBackContext.getCurrentContext = function(options) {
-      return ns && ns.active ? ns : null;
+      if (!ns || !ns.active) {
+        return null;
+      }
+      if (!options || !options.bind) {
+        return ns;
+      }
+      /**
+       * **NOTE**
+       * This only re-binds get, set and bind methods, the most used.
+       * If you use other methods of the context, e.g. runInContext(), etc.,
+       * you may run into unexpected issues that are fixed only for get & set.
+       */
+      var boundContext = Object.create(ns);
+      boundContext.get = boundContext.bind(ns.get);
+      boundContext.set = boundContext.bind(ns.set);
+
+      // Call to Function.prototype.bind(), not ns.bind()
+      boundContext.bind = ns.bind.bind(ns);
+
+      return boundContext;
     };
   }
   return ns;

server/middleware/per-request.js

@@ -1,5 +1,5 @@
-// Copyright IBM Corp. 2014,2016. All Rights Reserved.
+// Copyright IBM Corp. 2016. All Rights Reserved.
-// Node module: loopback-context-cls
+// Node module: loopback-context
 // This file is licensed under the MIT License.
 // License text available at https://opensource.org/licenses/MIT
 

test/helpers/expect.js

@@ -1,3 +1,8 @@
+// Copyright IBM Corp. 2016. All Rights Reserved.
+// Node module: loopback-context
+// This file is licensed under the MIT License.
+// License text available at https://opensource.org/licenses/MIT
+
 'use strict';
 
 var chai = require('chai');

test/main.test.js

@@ -1,11 +1,12 @@
-// Copyright IBM Corp. 2013,2016. All Rights Reserved.
+// Copyright IBM Corp. 2016,2018. All Rights Reserved.
-// Node module: loopback-context-cls
+// Node module: loopback-context
 // This file is licensed under the MIT License.
 // License text available at https://opensource.org/licenses/MIT
 
 'use strict';
 
-var async = require('async');
+var asyncV152 = require('async-1.5.2');
+var whenV377 = require('when-3.7.7');
 var LoopBackContext = require('..');
 var Domain = require('domain');
 var EventEmitter = require('events').EventEmitter;
@@ -51,7 +52,7 @@ describe('LoopBack Context', function() {
     TestModel.test = function(inst, cb) {
       var tmpCtx = LoopBackContext.getCurrentContext();
       if (tmpCtx) tmpCtx.set('data', 'a value stored in context');
-      if (process.domain) cb = process.domain.bind(cb);  // IMPORTANT
+      if (process.domain) cb = process.domain.bind(cb); // IMPORTANT
       runInOtherDomain(cb);
     };
 
@@ -105,28 +106,144 @@ describe('LoopBack Context', function() {
   // https://gist.github.com/marlonkjoseph/f42f3c71f746896a0d4b7279a34ea753
   // Heavily edited by others
   it('keeps context when using waterfall() from async 1.5.2',
-  function(done) {
+    function(done) {
-    expect(require('async/package.json').version).to.equal('1.5.2');
+      LoopBackContext.runInContext(function() {
-    LoopBackContext.runInContext(function() {
       // Trigger async waterfall callbacks
-      async.waterfall([
+        asyncV152.waterfall([
-        function pushToContext(next) {
+          function pushToContext(next) {
-          var ctx = LoopBackContext.getCurrentContext();
+            var ctx = LoopBackContext.getCurrentContext();
-          expect(ctx).is.an('object');
+            expect(ctx).is.an('object');
-          ctx.set('test-key', 'test-value');
+            ctx.set('test-key', 'test-value');
-          next();
+            next();
-        },
+          },
-        function pullFromContext(next) {
+          function pullFromContext(next) {
-          var ctx = LoopBackContext.getCurrentContext();
+            var ctx = LoopBackContext.getCurrentContext();
-          expect(ctx).is.an('object');
+            expect(ctx).is.an('object');
-          var testValue = ctx && ctx.get('test-key', 'test-value');
+            var testValue = ctx && ctx.get('test-key', 'test-value');
-          next(null, testValue);
+            next(null, testValue);
-        },
+          },
-        function verify(testValue, next) {
+          function verify(testValue, next) {
-          expect(testValue).to.equal('test-value');
+            expect(testValue).to.equal('test-value');
-          next();
+            next();
-        },
+          },
-      ], done);
+        ], done);
+      });
     });
+
+  it('handles concurrent then() calls with when v3.7.7 promises & bind option',
+    function() {
+      return Promise.all([
+        runWithPushedValue('test-value-1', {bind: true}),
+        runWithPushedValue('test-value-2', {bind: true}),
+      ])
+        .then(function verify(values) {
+          var failureCount = getFailureCount(values);
+          expect(failureCount).to.equal(0);
+        });
+    });
+
+  it('fails once without bind option and when v3.7.7 promises',
+    function() {
+      return Promise.all([
+        runWithPushedValue('test-value-3'),
+        runWithPushedValue('test-value-4'),
+      ])
+        .then(function verify(values) {
+          var failureCount = getFailureCount(values);
+          expect(failureCount).to.equal(1);
+        });
+    });
+
+  var timeout = 100;
+
+  function runWithPushedValue(pushedValue, options) {
+    return new Promise(function concurrentExecutor(outerResolve, reject) {
+      LoopBackContext.runInContext(function pushToContext() {
+        var ctx = LoopBackContext.getCurrentContext(options);
+        expect(ctx).is.an('object');
+        ctx.set('test-key', pushedValue);
+        var whenPromise = whenV377().delay(timeout);
+        whenPromise.then(function pullFromContextAndReturn() {
+          var pulledValue = ctx && ctx.get('test-key');
+          outerResolve({
+            pulledValue: pulledValue,
+            pushedValue: pushedValue,
+          });
+        }).catch(reject);
+      });
+    });
+  }
+
+  function getFailureCount(values) {
+    var failureCount = 0;
+    values.forEach(function(v) {
+      if (v.pulledValue !== v.pushedValue) {
+        failureCount++;
+      }
+    });
+    return failureCount;
+  }
+
+  it('doesn\'t mix up req\'s in chains of ' +
+  'Express-middleware-like func\'s if next() cb is bound',
+  function() {
+    return Promise.all([
+      runWithRequestId('test-value-5', true),
+      runWithRequestId('test-value-6', true),
+    ])
+      .then(function verify(values) {
+        var failureCount = getFailureCount(values);
+        expect(failureCount).to.equal(0);
+      });
   });
+
+  it('fails & mixes up ctx among requests in mw chains if next() cb is unbound',
+    function() {
+      return Promise.all([
+        runWithRequestId('test-value-7'),
+        runWithRequestId('test-value-8'),
+      ])
+        .then(function verify(values) {
+          var failureCount = getFailureCount(values);
+          expect(failureCount).to.equal(1);
+        });
+    });
+
+  function runWithRequestId(pushedValue, bindNextCb) {
+    return new Promise(function chainExecutor(outerResolve, reject) {
+      LoopBackContext.runInContext(function concurrentChain() {
+        function middlewareBreakingCls(req, res, next) {
+          var ctx = LoopBackContext.getCurrentContext({bind: true});
+          if (bindNextCb) {
+            next = ctx.bind(next);
+          }
+          ctx.set('test-key', pushedValue);
+          var whenPromise = whenV377().delay(timeout);
+          whenPromise.then(next).catch(reject);
+        };
+
+        function middlewareReadingContext(req, res, next) {
+          var ctx = LoopBackContext.getCurrentContext({bind: true});
+          var pulledValue = ctx && ctx.get('test-key');
+          next(null, pulledValue);
+        };
+
+        // Run the chain
+        var req = null;
+        var res = null;
+        middlewareBreakingCls(req, res, function(err) {
+          if (err) return reject(err);
+
+          middlewareReadingContext(req, res, function(err, result) {
+            if (err) return reject(err);
+
+            outerResolve({
+              pulledValue: result,
+              pushedValue: pushedValue,
+            });
+          });
+        });
+      });
+    });
+  }
 });

test/stub-modules/async-1.5.2/index.js

@@ -0,0 +1,7 @@
+// Copyright IBM Corp. 2017. All Rights Reserved.
+// Node module: loopback-context
+// This file is licensed under the MIT License.
+// License text available at https://opensource.org/licenses/MIT
+
+'use strict';
+module.exports = require('async');

test/stub-modules/async-1.5.2/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "async-1.5.2",
+  "version": "1.5.2",
+  "description":"async version 1.5.2",
+  "dependencies": {
+    "async":"1.5.2"
+  }
+}

test/stub-modules/when-3.7.7/index.js

@@ -0,0 +1,7 @@
+// Copyright IBM Corp. 2017. All Rights Reserved.
+// Node module: loopback-context
+// This file is licensed under the MIT License.
+// License text available at https://opensource.org/licenses/MIT
+
+'use strict';
+module.exports = require('when');

test/stub-modules/when-3.7.7/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "when-3.7.7",
+  "version": "3.7.7",
+  "description":"when version 3.7.7",
+  "dependencies": {
+    "when":"3.7.7"
+  }
+}