feat: deep-agent canvas, live observability, and multi-environment tooling

Self-hosted platform for building, testing, and shipping LangChain/LangGraph agents. Deep-agent sub-agents on the canvas, a live tracing/observability timeline, auto-provisioned built-in tools with import/export, per-environment tool variables, streamed evaluations, and per-user auth token forwarding.
2026-07-28 01:49:19 +05:30
commit ae67bff5a3
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+"""Error-workflow fallback: an erroring run returns the on_error message gracefully."""
+
+from __future__ import annotations
+
+from langgraph.checkpoint.memory import InMemorySaver
+
+from forge.db.base import SessionLocal
+from forge.models import Workflow
+from forge.services.dispatch import dispatch_message
+from forge.services.runs import RunService
+
+# agent with an unknown middleware type -> compile_workflow raises (deterministic, offline).
+# run_to_completion compiles inside its try block, so the on_error fallback covers it.
+_ERR_WF = {
+    "id": "wf_err", "version": 1,
+    "state": {"messages": {"type": "list[message]", "reducer": "add_messages"}},
+    "entry_node": "agent",
+    "on_error": {"message": "Sorry - something went wrong. A teammate will follow up."},
+    "nodes": [
+        {"id": "agent", "type": "agent", "config": {"flavor": "agent", "model": "fake:hi", "middleware": [{"type": "___nonexistent___", "enabled": True}]}},
+        {"id": "end", "type": "end", "config": {}},
+    ],
+    "edges": [{"source": "agent", "target": "end"}],
+}
+
+
+async def test_errored_run_returns_on_error_message():
+    async with SessionLocal() as s:
+        wf = Workflow(tenant_id="t_err", project_id="p_err", name="Err", executable=_ERR_WF, status="active")
+        s.add(wf)
+        await s.commit()
+        await s.refresh(wf)
+    rs = RunService(checkpointer=InMemorySaver())
+    result = await dispatch_message(rs, tenant_id="t_err", project_id="p_err", workflow_id=wf.id, text="hi")
+    assert result.get("error")  # the run did fail
+    assert result.get("error_handled") is True
+    assert result.get("answer") == "Sorry - something went wrong. A teammate will follow up."