fix: do not terminate random sessions

src/lib/saucelabs-manager.js

@@ -1,5 +1,6 @@
 var request = require('request'),
-  log = require('./log');
+  log = require('./log'),
+  _ = require('underscore');
 
 /**
  * SessionManager Constructor
@@ -21,6 +22,8 @@ function SauceLabsSessionManager(options) {
   this.retryDelay = 3000;
   this.retry = 0;
 
+  this.build = null;
+
   log.debug('[chimp][saucelabs-session-manager] created a new SessionManager', options);
 
 }
@@ -39,17 +42,25 @@ SauceLabsSessionManager.prototype.remote = function (webdriverOptions, callback)
   log.debug('[chimp][saucelabs-session-manager] creating webdriver remote ');
   var browser = this.webdriver.remote(webdriverOptions);
 
+  this.build = webdriverOptions.desiredCapabilities.build;
+  log.debug('[chimp][saucelabs-session-manager] build: ' + this.build);
+
   callback(null, browser);
   return;
 };
 
+var DEFAULT_LIMIT = 100;
+
 /**
  * Gets a list of sessions from the SauceLabs API based on Build ID
  *
  * @api private
  */
-SauceLabsSessionManager.prototype._getJobs = function (callback) {
-  var hub = this.options.sauceLabsUrl + '/jobs?full=:get_full_info&limit=10'; //default is 100 which seems like too much
+SauceLabsSessionManager.prototype._getJobs = function (callback, limit, skip) {
+  var hub = this.options.sauceLabsUrl + '/jobs?full=true&limit=' + limit;
+  if (skip > 0) {
+    hub += '&skip=' + skip;
+  }
 
   log.debug('[chimp][saucelabs-session-manager]', 'requesting sessions from', hub);
 
@@ -65,53 +76,89 @@ SauceLabsSessionManager.prototype._getJobs = function (callback) {
 };
 
 /**
- * Kills the 1st session found running on SauceLabs
- *
  * @api public
  */
 SauceLabsSessionManager.prototype.killCurrentSession = function (callback) {
 
-  this._getJobs(function (err, jobs) {
-    if (jobs && jobs.length) {
-      var job = jobs[0];
-
-      // This will stop the session, causing a 'User terminated' error.
-      // If we don't manually stop the session, we get a timed-out error.
-      var options = {
-        url: this.options.sauceLabsUrl + '/jobs/' + job.id + '/stop',
-        method: 'PUT'
-      };
-
-      request(options, function (error, response) {
-        if (!error && response.statusCode === 200) {
-          log.debug('[chimp][saucelabs-session-manager]', 'stopped session');
-          callback();
-        } else {
-          log.error('[chimp][saucelabs-session-manager]', 'received error', error);
-          callback(error);
+  var self = this;
+  var killSession = function (job) {
+    // This will stop the session, causing a 'User terminated' error.
+    // If we don't manually stop the session, we get a timed-out error.
+    var options = {
+      url: this.options.sauceLabsUrl + '/jobs/' + job.id + '/stop',
+      method: 'PUT'
+    };
+
+    request(options, function (error, response) {
+      if (!error && response.statusCode === 200) {
+        log.debug('[chimp][saucelabs-session-manager]', 'stopped session');
+        callback();
+      } else {
+        log.error('[chimp][saucelabs-session-manager]', 'received error', error);
+        callback(error);
+      }
+    });
+
+    // This will set the session to passing or else it will show as Errored out
+    // even though we stop it.
+    options = {
+      url: this.options.sauceLabsUrl + '/jobs/' + job.id,
+      method: 'PUT',
+      json: true,
+      body: { passed: true }
+    };
+
+    request(options, function (error, response) {
+      if (!error && response.statusCode === 200) {
+        log.debug('[chimp][saucelabs-session-manager]', 'updated session to passing state');
+        callback();
+      } else {
+        log.error('[chimp][saucelabs-session-manager]', 'received error', error);
+        callback(error);
+      }
+    });
+  }.bind(this)
+
+  var getJobForBuild = function(cb, skip) {
+    if (!self.build) {
+      // get one and kill it, this is the (flawed) default of chimp which will just randomly
+      // terminate sessions and you get an odd `Error: The test with session id XXX has already finished, and can't receive further commands.` error
+      console.warn('You should really consider setting a build, otherwise random sessions will be terminated!');
+      this._getJobs(function(err, jobs) {
+        if (jobs.length) {
+          killSession(jobs[0]);
         }
+      }, 1);
+      return;
+    }
+    this._getJobs(function(err, jobs) {
+      // the original code never uses this error,
+      // probably because if we don't find anything we just leave the session alone
+      // we might want to revisit this behavior
+      // if (err) {
+      //   cb(err);
+      // }
+      if (!jobs.length) {
+        // no more jobs found, let's exit
+        console.warn(`Couldn't find a job to terminate for build ${self.build}`);
+        callback();
+        return;
+      }
+      var currentJob = _.find(jobs, function (b) {
+        return b.build === self.build;
       });
+      if (!currentJob) {
+        // maybe it's in the next batch?
+        getJobForBuild(cb, skip + DEFAULT_LIMIT)
+      } else {
+        killSession(currentJob);
+      }
+    }, DEFAULT_LIMIT, skip);
+  }.bind(this)
 
-      // This will set the session to passing or else it will show as Errored out
-      // even though we stop it.
-      options = {
-        url: this.options.sauceLabsUrl + '/jobs/' + job.id,
-        method: 'PUT',
-        json: true,
-        body: { passed: true }
-      };
-
-      request(options, function (error, response) {
-        if (!error && response.statusCode === 200) {
-          log.debug('[chimp][saucelabs-session-manager]', 'updated session to passing state');
-          callback();
-        } else {
-          log.error('[chimp][saucelabs-session-manager]', 'received error', error);
-          callback(error);
-        }
-      });
-    }
-  }.bind(this));
+
+
+  getJobForBuild(killSession, 0);
 };
 
 module.exports = SauceLabsSessionManager;