Bug 1187339 - Always duplicate-save new main pings as aborted-session pings. r=dexter

toolkit/components/telemetry/TelemetrySession.jsm

@@ -531,32 +531,20 @@ let TelemetryScheduler = {
     }
     this._lastTickTime = now;
 
-    // Check if aborted-session ping is due.
-    let isAbortedPingDue =
-      (now - this._lastSessionCheckpointTime) >= ABORTED_SESSION_UPDATE_INTERVAL_MS;
-    // Check if daily ping is due.
-    let shouldSendDaily = this._isDailyPingDue(nowDate);
-    // We can combine the daily-ping and the aborted-session ping in the following cases:
-    // - If both the daily and the aborted session pings are due (a laptop that wakes
-    //   up after a few hours).
-    // - If either the daily ping is due and the other one would follow up shortly
-    //   (whithin the coalescence threshold).
-    let nextSessionCheckpoint =
-      this._lastSessionCheckpointTime + ABORTED_SESSION_UPDATE_INTERVAL_MS;
-    let combineActions = (shouldSendDaily && isAbortedPingDue) || (shouldSendDaily &&
-                          Utils.areTimesClose(now, nextSessionCheckpoint,
-                                                       SCHEDULER_COALESCE_THRESHOLD_MS));
+    // Check if the daily ping is due.
+    const shouldSendDaily = this._isDailyPingDue(nowDate);
 
-    if (combineActions) {
-      this._log.trace("_schedulerTickLogic - Combining pings.");
-      // Send the daily ping and also save its payload as an aborted-session ping.
-      return Impl._sendDailyPing(true).then(() => this._dailyPingSucceeded(now),
-                                            () => this._dailyPingFailed(now));
-    } else if (shouldSendDaily) {
+    if (shouldSendDaily) {
       this._log.trace("_schedulerTickLogic - Daily ping due.");
       return Impl._sendDailyPing().then(() => this._dailyPingSucceeded(now),
                                         () => this._dailyPingFailed(now));
-    } else if (isAbortedPingDue) {
+    }
+
+    // Check if the aborted-session ping is due. If a daily ping was saved above, it was
+    // already duplicated as an aborted-session ping.
+    const isAbortedPingDue =
+      (now - this._lastSessionCheckpointTime) >= ABORTED_SESSION_UPDATE_INTERVAL_MS;
+    if (isAbortedPingDue) {
       this._log.trace("_schedulerTickLogic - Aborted session ping due.");
       return this._saveAbortedPing(now);
     }
@@ -1871,11 +1859,9 @@ let Impl = {
 
   /**
    * Gather and send a daily ping.
-   * @param {Boolean} [saveAsAborted=false] Also saves the payload as an aborted-session
-   *                  ping.
    * @return {Promise} Resolved when the ping is sent.
    */
-  _sendDailyPing: function(saveAsAborted = false) {
+  _sendDailyPing: function() {
     this._log.trace("_sendDailyPing");
     let payload = this.getSessionPayload(REASON_DAILY, true);
 
@@ -1885,11 +1871,14 @@ let Impl = {
     };
 
     let promise = TelemetryController.submitExternalPing(getPingType(payload), payload, options);
-    // If required, also save the payload as an aborted session.
-    if (saveAsAborted && IS_UNIFIED_TELEMETRY) {
+
+    // Also save the payload as an aborted session. If we delay this, aborted-session can
+    // lag behind for the profileSubsessionCounter and other state, complicating analysis.
+    if (IS_UNIFIED_TELEMETRY) {
       let abortedPromise = this._saveAbortedSessionPing(payload);
       promise = promise.then(() => abortedPromise);
     }
+
     return promise;
   },