/opt/cloudlinux/venv/lib/python3.11/site-packages/xray/agent/__pycache__
Edit: /opt/cloudlinux/venv/lib/python3.11/site-packages/xray/agent/__pycache__/daemon.cpython-311.pyc (38206B)
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This module contains contains classes implementing X-Ray Agent behaviour
N)Threadcurrent_threadLockEventTimer)AnyOptionalDictTuple) dataclass )BoundedThreadExecutor)gettext)
get_client)local_tasks_storagetasks_base_storagesafe_id_pattern) XRayError XRayAPIError)
FaultDetector)open_local_storageflush_memory_storage get_task_ids)Task)
extract_creds) dbm_storage get_current_cpu_throttling_time)
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Calculate throttling values and update given data
with resulting throttling stat
hitting_limitsthrottled_timeN)rK )rV datat_key cpu_values r+ add_limit_faultszAgent.add_limit_faults s1
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Called when php request starts and sends us welcome
request meaning that request started on the php side.
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Handle incoming connection
:param connection: socket object usable to
send and receive data on the connection
:param workers_pool: pool where we can place
tasks for the futher processing
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|| S )a Dynamic max-min fair-share cap for one uid, in outstanding jobs.
MUST be called while holding _uid_jobs_lock (it reads _uid_jobs).
active = number of currently-active uids (those with > 0 outstanding
jobs). _uid_jobs is kept free of zero-count entries, so its size is the
active set; _uid itself is counted even on its first job (it is about
to become active), so a flood never under-counts itself out of a share.
The cap is:
max(min_floor, min(capacity - reserve, max(min_floor, capacity // active)))
* active == 1 -> capacity // 1 == capacity, clamped to capacity-reserve
(e.g. 80-16=64): a lone user is bounded only by the real queue.Full,
no regression, yet still leaves `reserve` slots for a new tenant.
* active == N -> capacity // N: a fair split; a flooder is held to its
share going forward and converges to it as its jobs drain.
* min_floor stops the cap collapsing to 0 with very many active uids.
* the OUTER max(min_floor, ...) keeps the cap >= min_floor even when the
capacity - reserve clamp is <= 0 (e.g. maxqueuesize == 0, so
capacity == max_workers == reserve): without it the cap would be 0 and
_submit_uid_job would drop EVERY request from EVERY uid (total
self-DoS). On such a tiny pool the per-uid cap is min_floor and the
executor's real queue.Full (BoundedSemaphore = maxqueuesize +
max_workers) is the backstop.
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Submit a worker job into the shared workers_pool, enforcing a DYNAMIC
max-min per-UID fair share of the real pool capacity, UNCONDITIONALLY.
At submit time the per-UID cap is recomputed from the number of
currently-active uids (see _effective_uid_cap): a sole active uid gets
the whole capacity minus a reserved headroom (no regression — bounded
only by the real queue.Full), while with N active uids each gets
capacity // N (fair split). There is NO pressure gate: the cap alone
provides both no-regression for a lone user and anti-monopolization
under contention, and a flooder cannot defeat it by supplying its own
load. The reserved headroom guarantees a newly-arriving tenant always
finds free slots even when one uid has filled its share.
r zPer-UID fair-share drop: uid=%s holds %s outstanding jobs (dynamic fair-share cap %s for %s active uid(s), pool capacity %s, reserve %s); dropping this request to protect other tenantsr
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lock. The total counter is floored at 0 so it can never underflow if a
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Initialize MongoDB client for current task
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zCached API data: %sNz,Adding new container in cache: %s --> %s, %sz9api_data_cache at capacity (%d), evicting oldest entry %s)r# r$ )rp r rJ r r# r$ r get_taskrH r _MAX_CACHE_ENTRIESnextiterr_ popr" )rV r cached_datary _t
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Cleanup an API data im-memory cache dict in order not store
inactive (stopped, already completed) tasks there
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Increment request ID in /usr/share/alt-php-xray/requests/{tracing_task_id} file
Substitute request_id and tracing_task_id in request_data.
Send request_data to ClickHouse
:param request_data: original request data
:param caller_uid: UID of the connecting process (from SO_PEERCRED)
r Nz*Rejecting request with invalid task id: %szSRejecting request from uid=%s for task %s: no matching task file in per-UID storagezProcessing task: %s)r rm r z*Tracing count is 0, nothing should be donezSending to ClickHousezSending to SmartAdvicer
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