Demo Script
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Demo Script
Use the harness to show Lens in about ten minutes. Start it with harness/start.sh and open http://localhost:8085. See Development.
1. The healthy page
Open /orders.bxm. Point at the collapsed strip: status, time, memory, query and template counts.
Press Ctrl+` to open the panel. Show the Timeline, then press 3 for Queries, and the Timers and Messages tabs.
2. An N+1
Open /n-plus-one.bxm. The bar only says what happened: 11 queries, no color. Show the queries and their caller in Queries, then press Console to open the request in the console, where the N+1 issue is listed.
3. A slow query
Open /slow.bxm. Show the slow query on the Timeline, then the Slow query issue in the console request detail.
4. A caught exception
Open /caught-exception.bxm. Lens opens the panel on Exceptions by itself. Open Exceptions to show the stack and the editor link.
5. An uncaught error
Open /error.bxm. Core shows its own page, so there is no bar. Open the console Requests page to show the request, its exception and its issue.
6. History
Visit /api/orders.json.bxm and /events.bxm, then open the console Requests page. Show the JSON and SSE rows with their type. Mention the 50 request ring buffer and that nothing is saved.
7. HTTP and the runtime
Open /http.bxm and show the 404 in HTTP. Open the Runtime tab to show the versions, the heap and the main settings, then the console Configuration page.
8. Redaction
Open /forms.bxm, submit the form and open Request and Scopes. The password value is masked. Open /session.bxm and show the masked token.
9. Extend it
Open /extend.bxm. Show the Harness and Phases panels built from app code, and the Demo module panel from demoLens.
10. The UI
Drag the top edge to resize, press the detach button to float the panel, then dock it again. Toggle the theme. Reload the page and show that the state persists.
11. The console
Open http://localhost:8085/~bxlens/index.bxm and sign in with lens-demo. Start on Overview, then open Requests and pick the N+1 request you made earlier. Click Open console in the bar and the More menu to show the link from a page to its request.
12. Executors and tasks
Open /load.bxm, then the Executors page. The demo-pool goes degraded and then critical as eight tasks queue on two threads. Open Tasks, pick sync-prices, press Run now and show the error. Pause and resume cleanup-sessions.
13. A slow request
Open /stall.bxm, then open the request in the console. The Slow request issue names the line where the request was after 3 seconds. The Request tab of the bar shows the CPU time and the memory.
14. Design the bar
Open the Bar designer, hide a tab, move another, save, and reload a page. Press Reset to default.
