Incorporate Segment.io into Logger.log with whitelist

common/lib/xmodule/xmodule/js/src/sequence/display.coffee

@@ -111,11 +111,6 @@ class @Sequence
     if (1 <= new_position) and (new_position <= @num_contents)
       Logger.log "seq_goto", old: @position, new: new_position, id: @id
 
-      analytics.track "Sequential Goto",
-        old: @position
-        new: new_position
-        id: @id
-
       # On Sequence chage, destroy any existing polling thread
       #   for queued submissions, see ../capa/display.coffee
       if window.queuePollerID
@@ -132,22 +127,12 @@ class @Sequence
     Logger.log "seq_next", old: @position, new: new_position, id: @id
     @render new_position
 
-    analytics.track "Sequential Next",
-        old: @position
-        new: new_position
-        id: @id
-
   previous: (event) =>
     event.preventDefault()
     new_position = @position - 1
     Logger.log "seq_prev", old: @position, new: new_position, id: @id
     @render new_position
 
-    analytics.track "Sequential Previous",
-        old: @position
-        new: new_position
-        id: @id
-
   link_for: (position) ->
     @$("#sequence-list a[data-element=#{position}]")
 

common/static/coffee/src/logger.coffee

@@ -1,5 +1,12 @@
 class @Logger
+  # events we want sent to Segment.io for tracking
+  SEGMENT_IO_WHITELIST = ["seq_goto", "seq_next", "seq_prev"]
+
   @log: (event_type, data) ->
+    if event_type in SEGMENT_IO_WHITELIST
+      # Segment.io event tracking
+      analytics.track event_type, data
+
     $.getWithPrefix '/event',
       event_type: event_type
       event: JSON.stringify(data)

lms/envs/common.py

@@ -102,7 +102,7 @@ MITX_FEATURES = {
     # Staff Debug tool.
     'ENABLE_STUDENT_HISTORY_VIEW': True,
 
-    # segment.io for LMS--need to explicitly turn it on on production.
+    # segment.io for LMS--need to explicitly turn it on for production.
     'SEGMENT_IO_LMS': False,
 
     # Enables the student notes API and UI.