Support automation without creating a HAR file

Author: janodvarko

lib/trigger-toolbox-overlay.js

@@ -72,9 +72,23 @@ const TriggerToolboxOverlay = Class(
 
     Trace.sysout("TriggerToolboxOverlay.onReady;", options);
 
+    let autoExportToFile = Services.prefs.getBoolPref(
+      "devtools.netmonitor.har.enableAutoExportToFile");
+
     // Call make remote to make sure the target.client exists.
     let target = this.toolbox.target;
     target.makeRemote().then(() => {
+      // The 'devtools.netmonitor.har.enableAutoExportToFile' option doesn't
+      // have to be set if users don't want to auto export to file after
+      // every page load.
+      // But, if users want to use HAR content API to trigger HAR export
+      // when needed, HAR automation needs to be activated. Let's do it now
+      // if 'extensions.netmonitor.har.enableAutomation' preference is true.
+      if (prefs.enableAutomation && !autoExportToFile) {
+        let harOverlay = getHarOverlay(this.toolbox);
+        harOverlay.initAutomation();
+      }
+
       this.attach().then(front => {
         Trace.sysout("TriggerToolboxOverlay.onReady; HAR driver ready!");
       });
@@ -166,8 +180,9 @@ const TriggerToolboxOverlay = Class(
       return;
     }
 
-    // Trigger HAR export now!
-    harOverlay.automation.triggerExport(data).then(jsonString => {
+    // Trigger HAR export now! Use executeExport() not triggerExport()
+    // since we don't want to have the default name automatically provided.
+    harOverlay.automation.executeExport(data).then(jsonString => {
       Trace.sysout("TriggerToolboxOverlay.triggerExport; DONE", jsonString);
 
       // Send event back to the backend notifying that it has

package.json

@@ -33,5 +33,11 @@
     "description": "Set to true to expose HAR trigger API into the content",
     "type": "string",
     "value": ""
+  }, {
+    "name": "enableAutomation",
+    "title": "Enable automatic collecting of HAR data",
+    "description": "Flip this option to enable automatic collecting of HAR data, so HAR export can be triggered when necessary",
+    "type": "bool",
+    "value": false
   }]
 }