gameKeys iteration

backend/session.coffee

@@ -81,10 +81,40 @@ class FFTCGSESSION
               reject null
 
             else
+              # add game to active set
+              @db.sadd (@gameKey 'active'), (@gameKey digest), (err, res) =>
                 # return game ID
                 logger.info "OK '#{@gameKey digest}' created"
                 resolve digest
 
+  getGames: ->
+    # function to return all active gameKeys
+    activeGameKeys = (set, cursor) =>
+      # start iteration
+      set ?= new Set()
+      cursor ?= '0'
+
+      return new Promise (resolve, reject) =>
+        # scan "active" gameKey
+        @db.sscan (@gameKey 'active'), cursor, 'COUNT', '100', (err, res) =>
+
+          # add to results set
+          cursor = res[0]
+          for key in res[1]
+            set.add key
+
+          if cursor == '0'
+            # done on cursor = 0
+            resolve set
+          else
+            # recursive call (resolve one step deeper)
+            allGames set, cursor
+            .then (set) =>
+              resolve set
+
+    activeGameKeys().then (set) =>
+      logger.info "game count: #{Array.from(set).length}"
+
   joinGame: (digest, userid) ->
     new Promise (resolve, reject) =>
       # refresh expiry timer on digest