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DCPError: no transports defined

Open philippedistributive opened this issue 1 year ago • 6 comments

Issue type

Bug

How did you install PythonMonkey?

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OS platform and distribution

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Python version (python --version)

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PythonMonkey version (pip show pythonmonkey)

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Bug Description

sometimes get

Warning: keepalive failed for compute groups service DCPError: no transports defined DCPError@webpack://dcp/./src/common/dcp-error.js?:22:5Connection530$$connectTransport@webpack://dcp/./src/protocol/connection.js?:825:22 asyncConnection530$$connectInternal@webpack://dcp/./src/protocol/connection.js?:757:16 asyncConnection530$$connect@webpack://dcp/./src/protocol/connection.js?:667:10 Connection530$$send@webpack://dcp/./src/protocol/connection.js?:1170:15 DcpMessage$$send@webpack://dcp/./src/protocol/dcp-message.js?:58:26 Connection530$$keepalive@webpack://dcp/./src/protocol/connection.js?:1225:18 keepAlive@webpack://dcp/./src/dcp-client/compute-groups/index.js?:65:36 addJobToGroups@webpack://dcp/./src/dcp-client/compute-groups/index.js?:458:17 joinComputeGroups@webpack://dcp/./src/dcp-client/job/index.js?:1304:47 exec@webpack://dcp/./src/dcp-client/job/index.js?:999:43 sendPromiseRejectWrapper@webpack://dcp/./src/protocol/connection.js?:1135:32 DialogueRegistry$$clear@webpack://dcp/./src/protocol/dialogue-registry.js?:173:24 finalize@webpack://dcp/./src/protocol/connection.js?:491:29 Connection530$$shutdown/<@webpack://dcp/./src/protocol/connection.js?:460:9 Connection530$$a$enqueue@webpack://dcp/./src/protocol/connection.js?:1118:27 Connection530$$send@webpack://dcp/./src/protocol/connection.js?:1182:36 DcpMessage$$send@webpack://dcp/./src/protocol/dcp-message.js?:58:26 Connection530$$keepalive@webpack://dcp/./src/protocol/connection.js?:1225:18 keepAlive@webpack://dcp/./src/dcp-client/compute-groups/index.js?:65:36 addJobToGroups@webpack://dcp/./src/dcp-client/compute-groups/index.js?:458:17 joinComputeGroups@webpack://dcp/./src/dcp-client/job/index.js?:1304:47 exec@webpack://dcp/./src/dcp-client/job/index.js?:999:43 code: 'DCPC-1014', message: 'no transports defined'

Standalone code to reproduce the issue

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Relevant log output or backtrace

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Additional info if applicable

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What branch of PythonMonkey were you developing on? (If applicable)

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philippedistributive avatar Apr 30 '24 20:04 philippedistributive

FYI - this probably means that XHR threw an exception, so DCP wanted to move to a non-socketio transport, but we only have one transport implemented right now. We consider uncategorized exceptions like this to be fatal errors for a given connection.

wesgarland avatar Jun 05 '24 14:06 wesgarland

just reproed by Caleb

philippedistributive avatar Jun 12 '24 15:06 philippedistributive

I'm hitting this as well - with stack:

Uncaught undefined DCPError: no transports defined
    DCPError@webpack://dcp/./src/common/dcp-error.js?:22:5Connection530$$connectTransport@webpack://dcp/./src/protocol/connection.js?:828:22
    async*Connection530$$connectInternal@webpack://dcp/./src/protocol/connection.js?:760:16
    async*Connection530$$connect@webpack://dcp/./src/protocol/connection.js?:674:10
    Connection530$$send@webpack://dcp/./src/protocol/connection.js?:1189:15
    Connection530$$request@webpack://dcp/./src/protocol/connection.js?:1233:15
    provisionSubscriptionTokens@webpack://dcp/./src/events/event-subscriber.js?:227:48
    subscribeManyEvents@webpack://dcp/./src/events/event-subscriber.js?:307:18
    subscribeCustomEvents@webpack://dcp/./src/dcp-client/job/index.js?:1228:34
    addInitialEvents@webpack://dcp/./src/dcp-client/job/index.js?:1189:18
    async*exec@webpack://dcp/./src/dcp-client/job/index.js?:954:39

  timestamp: 2024-07-01T21:45:41.886Z,
  code: 'DCPC-1014',
  process: 'z-pure-pm-joe' undefined
Uncaught undefined DCPError: no transports defined
    DCPError@webpack://dcp/./src/common/dcp-error.js?:22:5Connection530$$connectTransport@webpack://dcp/./src/protocol/connection.js?:828:22
    async*Connection530$$connectInternal@webpack://dcp/./src/protocol/connection.js?:760:16
    async*Connection530$$connect@webpack://dcp/./src/protocol/connection.js?:674:10
    Connection530$$send@webpack://dcp/./src/protocol/connection.js?:1189:15
    Connection530$$request@webpack://dcp/./src/protocol/connection.js?:1233:15
    provisionSubscriptionTokens@webpack://dcp/./src/events/event-subscriber.js?:227:48
    subscribeManyEvents@webpack://dcp/./src/events/event-subscriber.js?:307:18
    subscribeCustomEvents@webpack://dcp/./src/dcp-client/job/index.js?:1228:34
    addInitialEvents@webpack://dcp/./src/dcp-client/job/index.js?:1189:18
    async*exec@webpack://dcp/./src/dcp-client/job/index.js?:954:39

  timestamp: 2024-07-01T21:45:49.390Z,
  code: 'DCPC-1014',
  process: 'z-pure-pm-joe' undefined

undefined Error: xhr poll error
    TransportError@webpack://dcp/./node_modules/@kingsds/engine.io-client/build/cjs/transport.js?:14:9
    onError@webpack://dcp/./node_modules/@kingsds/engine.io-client/build/cjs/transport.js?:46:37
    doPoll/<@webpack://dcp/./node_modules/@kingsds/engine.io-client/build/cjs/transports/polling.js?:255:18
    Emitter.prototype.emit@webpack://dcp/./node_modules/@socket.io/component-emitter/index.mjs?:140:20
    onError@webpack://dcp/./node_modules/@kingsds/engine.io-client/build/cjs/transports/polling.js?:356:14
    create/xhr.onreadystatechange/<@webpack://dcp/./node_modules/@kingsds/engine.io-client/build/cjs/transports/polling.js?:329:30

  description: 0,
  context: 
   XMLHttpRequest {
     onloadstart: undefined,
     onprogress: undefined,
     onabort: undefined,
     onerror: undefined,
     onload: undefined,
     ontimeout: undefined,
     onloadend: undefined,
     onreadystatechange: [Function],
     UNSENT: 0,
     OPENED: 1,
     HEADERS_RECEIVED: 2,
     LOADING: 3,
     DONE: 4,
     timeout: 0 },
  type: 'TransportError',
  transport: 'socketio',
  httpStatus: 0,
  httpHeaders: {},
  __statusTextCode: undefined undefined

from the following repro:

#!/usr/bin/env python3
import pythonmonkey as pm
import asyncio

#relative path - but fwiw, I'm on develop dcp-client & dcp as of 2024-07-01
dcpClient = pm.require('./dcp/js/node_modules/dcp-client')
dcpClient['init']()

async def compute_for_it():
    pm.eval('''
    globalThis.myJob = dcp.compute.for([1,2,3,4,5,6,7,8,9,10], (x) => { progress(); return x + x })
    ''')
asyncio.run(compute_for_it())

my_j = pm.eval("globalThis.myJob")

my_j.on('readystatechange', print)
my_j.on('accepted', lambda: print(my_j.id))
my_j.on('result', print)

my_j.public.name = 'simple example'

async def exec_it():
    return await my_j.exec()
res = asyncio.run(exec_it())

print(pm.eval('Array.from')(res))

wiwichips avatar Jul 01 '24 16:07 wiwichips

Still getting this issue

wiwichips avatar Jul 08 '24 19:07 wiwichips

See private KDS Slack thread about my reporting of this bug and it being frequent.

wiwichips avatar Jul 08 '24 19:07 wiwichips

I just saw a new manifestation of this error while running in a public library, with a high-repro rate:

Uncaught undefined DCPError: no transports defined DCPError@webpack://dcp/./src/common/dcp-error.js?:22:5Connection530$$connectTransport@webpack://dcp/./src/protocol/connection.js?:828:22 asyncConnection530$$connectInternal@webpack://dcp/./src/protocol/connection.js?:760:16 asyncConnection530$$connect@webpack://dcp/./src/protocol/connection.js?:674:10 Connection530$$send@webpack://dcp/./src/protocol/connection.js?:1189:15 Connection530$$request@webpack://dcp/./src/protocol/connection.js?:1233:15 provisionSubscriptionTokens@webpack://dcp/./src/events/event-subscriber.js?:227:48 subscribeManyEvents@webpack://dcp/./src/events/event-subscriber.js?:307:18 subscribeNewEvents@webpack://dcp/./src/dcp-client/job/index.js?:1219:32 addInitialEvents@webpack://dcp/./src/dcp-client/job/index.js?:1172:16 async*exec@webpack://dcp/./src/dcp-client/job/index.js?:954:39

philippedistributive avatar Jul 10 '24 19:07 philippedistributive