Add chat-ui-htmx module: streaming chat page on Spring AI 2.0.2 with htmx and its SSE extension (vendored), MessageChatMemoryAdvisor keyed by the HTTP session, a Stop button, and the traps measured: EventSource strips one leading space per data line, model text must be HTML-escaped, a cancelled stream left the upstream connection open in 7 of 8 runs until an OkHttp interceptor calls Call.cancel (8 of 8 closed after), and the SDK push source ignores back-pressure (limitRate changes only the demand; a bounded buffer works). The model is a stub OpenAI-compatible SSE server written for the module; no real provider was run.

Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_017ic4b6Kg9RWSTJzyz6KP9X
2026-10-31 04:02:56 +00:00
parent c97bcf9adf
commit 68da642f9a
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+#!/usr/bin/env python3
+"""Drives the real page in headless Chromium (Playwright for Python) against the running app + stub.
+Prints a transcript to stdout. Needs: pip install playwright && playwright install chromium."""
+import sys, time, urllib.request
+from playwright.sync_api import sync_playwright
+
+APP = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:38180"
+STUB = sys.argv[2] if len(sys.argv) > 2 else "http://localhost:38181"
+
+def stub(path):
+    return urllib.request.urlopen(STUB + path, data=b"" if "config" in path else None).read().decode().strip()
+
+def ask(page, text):
+    n = page.locator(".msg.bot").count()
+    page.fill("input[name=message]", text)
+    page.click("form button")
+    page.wait_for_selector(f".msg.bot >> nth={n}")
+    return int(page.locator(".msg.bot span[id^=out-]").last.get_attribute("id")[4:])
+
+def wait_done(page, n, timeout=20000):
+    page.wait_for_function(f"!document.querySelector('#stop-{n}')", timeout=timeout)
+
+def bot_text(page, n):
+    return page.locator(f"#out-{n}").inner_text()
+
+with sync_playwright() as p:
+    b = p.chromium.launch()
+    ctx = b.new_context()
+    page = ctx.new_page()
+    dialogs = []
+    page.on("dialog", lambda d: (dialogs.append(d.message), d.dismiss()))
+    page.goto(APP + "/")
+    print("== turn 1 (session A)")
+    n = ask(page, "My name is Asha and I like tea"); wait_done(page, n)
+    print("A1:", repr(bot_text(page, n)))
+    print("== turn 2 (session A, same cookie)")
+    n = ask(page, "What did I just tell you?"); wait_done(page, n)
+    print("A2:", repr(bot_text(page, n)))
+    print("cookies:", [c["name"] for c in ctx.cookies()])
+    print("== turn 1 (session B, fresh browser context, no cookie)")
+    ctx2 = b.new_context(); page2 = ctx2.new_page(); page2.goto(APP + "/")
+    n = ask(page2, "What did I just tell you?"); wait_done(page2, n)
+    print("B1:", repr(bot_text(page2, n)))
+    print("== New conversation button in session A, then ask again")
+    page.click("text=New conversation"); time.sleep(0.5)
+    n = ask(page, "Do you remember me?"); wait_done(page, n)
+    print("A3:", repr(bot_text(page, n)))
+    print("== model output containing markup")
+    n = ask(page, "html please"); wait_done(page, n)
+    print("rendered text:", repr(bot_text(page, n)))
+    print("<b> elements created inside the answer:", page.locator(f"#out-{n} b").count())
+    print("<img> elements created inside the answer:", page.locator(f"#out-{n} img").count())
+    print("alert dialogs fired:", len(dialogs))
+    print("== stop button")
+    stub("/stub/config?delayMs=50")
+    n = ask(page, "count 200")
+    page.wait_for_function(f"document.querySelector('#out-{n}').innerText.length > 30")
+    before = bot_text(page, n)
+    t0 = time.time(); page.click(f"#stop-{n}")
+    page.wait_for_function(f"!document.querySelector('#stop-{n}')")
+    time.sleep(1.5)
+    after = bot_text(page, n)
+    print("text at click :", repr(before))
+    print("text 1.5 s on :", repr(after))
+    print("grew after stop:", len(after.replace(' [stopped]','')) > len(before.replace(' [stopped]','')) + 6)
+    stub("/stub/config?delayMs=20")
+    b.close()