Files
hermes-agent/tests/honcho_plugin/test_oauth.py
Erosika 6ea01262fc fix(honcho): recover memory from mid-session oauth 401s and tell the user once
An expired access token could pause Honcho memory for hours with no
user-facing signal: ensure_fresh_token swallowed every exchange failure
and returned the stale token, no code handled a 401 from the Honcho API,
and each failed dialectic cycle widened the cadence backoff. Hypothesis
for the trigger (not confirmed): the refresh POST times out after the
server already rotated the token pair, Hermes keeps the old refresh
token, and the eventual replay lands outside the server's 60-second
rotation grace window, which revokes the whole grant.

- oauth: the exchange reads the token endpoint's error body instead of
  discarding it. invalid_grant and other permanent OAuth errors mark the
  grant dead so no code retries a revoked grant; transient failures retry
  once immediately, which keeps a replayed refresh token inside the grace
  window. Log lines redact token values.
- oauth: force_refresh_token() rotates the token now, ignoring local
  expiry, to recover from a server-side 401.
- session: dialectic_query and _flush_session treat a 401 as a trigger to
  force one token rotation and retry the call exactly once. A persistent
  auth failure raises HonchoAuthError (dialectic) or records the failure
  (sync) instead of being returned as an empty result.
- provider: injects a one-time notice into the memory context so the
  model tells the user memory is paused and 'hermes honcho setup'
  restores it. Auth failures no longer widen the dialectic cadence
  backoff.

New tests cover the exchange retry, invalid_grant terminality plus
re-login recovery, forced refresh, 401 retry on both the sync and
dialectic paths, the one-time notice, and the backoff exemption.
2026-08-08 14:40:46 +05:30

202 lines
7.9 KiB
Python

"""Tests for plugins/memory/honcho/oauth.py — OAuth grant storage + refresh."""
import json
from pathlib import Path
import pytest
from plugins.memory.honcho import oauth
from plugins.memory.honcho.oauth import OAuthCredential
def _host_block(refresh="hch-rt-old", expires_at=10_000):
return {
"apiKey": "hch-at-old",
"oauth": {
"refreshToken": refresh,
"expiresAt": expires_at,
"clientId": "hermes-desktop",
"tokenEndpoint": "http://localhost:8000/oauth/token",
"scope": "write",
"tokenType": "Bearer",
},
}
def _write(path: Path, raw: dict) -> None:
path.write_text(json.dumps(raw), encoding="utf-8")
class TestTokenDetection:
def test_access_token_prefix(self):
assert oauth.is_oauth_access_token("hch-at-abc")
assert not oauth.is_oauth_access_token("hch-v3-abc")
assert not oauth.is_oauth_access_token("hch-rt-abc")
assert not oauth.is_oauth_access_token(None)
class TestCredentialModel:
def test_roundtrip(self):
cred = OAuthCredential.from_host_block(_host_block())
assert cred is not None
block = cred.oauth_block()
assert block["refreshToken"] == "hch-rt-old"
assert block["expiresAt"] == 10_000
assert block["clientId"] == "hermes-desktop"
def test_incomplete_block_returns_none(self):
# plain API key (no oauth sub-block)
assert OAuthCredential.from_host_block({"apiKey": "hch-v3-x"}) is None
# oauth block missing refreshToken
bad = _host_block()
del bad["oauth"]["refreshToken"]
assert OAuthCredential.from_host_block(bad) is None
def test_is_expired_respects_skew(self):
cred = OAuthCredential.from_host_block(_host_block(expires_at=1000))
assert not cred.is_expired(now=800, skew=120) # 1000-120=880 > 800
assert cred.is_expired(now=900, skew=120) # 900 >= 880
class TestEnsureFreshToken:
def test_no_oauth_credential_is_noop(self, tmp_path):
path = tmp_path / "honcho.json"
_write(path, {"hosts": {"hermes": {"apiKey": "hch-v3-static"}}})
token, refreshed = oauth.ensure_fresh_token(path, "hermes", now=0)
assert token is None and refreshed is False
def test_fresh_token_skips_refresh(self, tmp_path, monkeypatch):
path = tmp_path / "honcho.json"
_write(path, {"hosts": {"hermes": _host_block(expires_at=10_000)}})
monkeypatch.setattr(
oauth, "_http_post_form_status",
lambda *a, **k: pytest.fail("refresh must not be called when fresh"),
)
token, refreshed = oauth.ensure_fresh_token(path, "hermes", now=0)
assert token == "hch-at-old" and refreshed is False
def test_expired_token_refreshes_and_persists_rotation(self, tmp_path, monkeypatch):
path = tmp_path / "honcho.json"
_write(path, {"hosts": {"hermes": _host_block(expires_at=100)}})
def fake_post(url, data, timeout):
assert data["grant_type"] == "refresh_token"
assert data["refresh_token"] == "hch-rt-old"
assert data["client_id"] == "hermes-desktop"
return 200, {
"access_token": "hch-at-new",
"refresh_token": "hch-rt-new",
"expires_in": 3600,
"scope": "write",
"token_type": "Bearer",
}
monkeypatch.setattr(oauth, "_http_post_form_status", fake_post)
token, refreshed = oauth.ensure_fresh_token(path, "hermes", now=1000)
assert token == "hch-at-new" and refreshed is True
# Rotated refresh token + new access token + absolute expiry persisted.
saved = json.loads(path.read_text())["hosts"]["hermes"]
assert saved["apiKey"] == "hch-at-new"
assert saved["oauth"]["refreshToken"] == "hch-rt-new"
assert saved["oauth"]["expiresAt"] == 1000 + 3600
def test_refresh_failure_fails_open(self, tmp_path, monkeypatch):
path = tmp_path / "honcho.json"
_write(path, {"hosts": {"hermes": _host_block(expires_at=100)}})
monkeypatch.setattr(oauth, "_REFRESH_RETRY_DELAY_SECONDS", 0)
calls = []
def boom(*a, **k):
calls.append(a)
raise RuntimeError("network down")
monkeypatch.setattr(oauth, "_http_post_form_status", boom)
token, refreshed = oauth.ensure_fresh_token(path, "hermes", now=1000)
# Stale token returned, no crash, file untouched. Transient failures
# retry exactly once, then fail open.
assert token == "hch-at-old" and refreshed is False
assert len(calls) == 2
assert json.loads(path.read_text())["hosts"]["hermes"]["apiKey"] == "hch-at-old"
def test_double_check_uses_disk_when_already_rotated(self, tmp_path, monkeypatch):
# Simulates a concurrent thread that rotated the token on disk after our
# stale in-memory snapshot: the locked re-read must skip the HTTP call.
path = tmp_path / "honcho.json"
_write(path, {"hosts": {"hermes": _host_block(refresh="hch-rt-fresh", expires_at=10_000)}})
stale_raw = {"hosts": {"hermes": _host_block(refresh="hch-rt-old", expires_at=100)}}
stale_raw["hosts"]["hermes"]["apiKey"] = "hch-at-stale"
monkeypatch.setattr(
oauth, "_http_post_form_status",
lambda *a, **k: pytest.fail("must not refresh; disk token is fresh"),
)
token, refreshed = oauth.ensure_fresh_token(path, "hermes", stale_raw, now=1000)
assert token == "hch-at-old" # the on-disk fresh credential's access token
class TestInstallGrant:
def test_deep_merges_config_and_preserves_other_hosts(self, tmp_path):
path = tmp_path / "honcho.json"
_write(path, {
"apiKey": "hch-v3-root", # root static key preserved
"hosts": {
"obsidian": {"workspace": "obsidian"},
"hermes": {"workspace": "hermes", "saveMessages": False},
},
})
grant = {
"access_token": "hch-at-fresh",
"refresh_token": "hch-rt-fresh",
"expires_in": 3600,
"scope": "write",
"config": {
"environment": "production",
"hosts": {"hermes": {"saveMessages": True, "recallMode": "hybrid"}},
},
}
cred = oauth.install_grant(
path, "hermes", grant,
client_id="hermes-desktop",
token_endpoint="http://localhost:8000/oauth/token",
now=1000,
)
assert cred.expires_at == 1000 + 3600
saved = json.loads(path.read_text())
assert saved["apiKey"] == "hch-v3-root" # untouched
assert saved["hosts"]["obsidian"] == {"workspace": "obsidian"} # untouched
h = saved["hosts"]["hermes"]
assert h["apiKey"] == "hch-at-fresh"
assert h["oauth"]["refreshToken"] == "hch-rt-fresh"
assert h["saveMessages"] is True # grant config won the deep-merge
assert h["recallMode"] == "hybrid" # new key added
assert h["workspace"] == "hermes" # pre-existing key preserved
assert saved["environment"] == "production" # root key from grant
def test_rejects_grant_without_tokens(self, tmp_path):
path = tmp_path / "honcho.json"
_write(path, {})
with pytest.raises(ValueError):
oauth.install_grant(
path, "hermes", {"access_token": "hch-at-x"}, # no refresh_token
client_id="c", token_endpoint="e",
)
class TestApplyTokenToClient:
def test_mutates_live_bearer(self):
class FakeHttp:
api_key = "hch-at-old"
class FakeClient:
_http = FakeHttp()
client = FakeClient()
assert oauth.apply_token_to_client(client, "hch-at-new") is True
assert client._http.api_key == "hch-at-new"
def test_returns_false_when_shape_unknown(self):
assert oauth.apply_token_to_client(object(), "hch-at-new") is False