Raoul Hidalgo Charman pushed to branch raoul/smarter-bot-calls at BuildGrid / buildgrid
Commits:
-
f324bbdd
by Raoul Hidalgo Charman at 2018-11-08T11:07:57Z
4 changed files:
- buildgrid/_app/commands/cmd_bot.py
- buildgrid/bot/bot.py
- buildgrid/bot/bot_interface.py
- buildgrid/bot/bot_session.py
Changes:
| ... | ... | @@ -33,7 +33,6 @@ from buildgrid.bot.bot_session import BotSession, Device, Worker |
| 33 | 33 |
|
| 34 | 34 |
from ..bots import buildbox, dummy, host
|
| 35 | 35 |
from ..cli import pass_context
|
| 36 |
-from ...settings import INTERVAL_BUFFER
|
|
| 37 | 36 |
|
| 38 | 37 |
|
| 39 | 38 |
@click.group(name='bot', short_help="Create and register bot clients.")
|
| ... | ... | @@ -53,6 +52,7 @@ from ...settings import INTERVAL_BUFFER |
| 53 | 52 |
help="Public CAS client certificate for TLS (PEM-encoded)")
|
| 54 | 53 |
@click.option('--cas-server-cert', type=click.Path(exists=True, dir_okay=False), default=None,
|
| 55 | 54 |
help="Public CAS server certificate for TLS (PEM-encoded)")
|
| 55 |
+# TODO change default to 30
|
|
| 56 | 56 |
@click.option('--update-period', type=click.FLOAT, default=30, show_default=True,
|
| 57 | 57 |
help="Time period for bot updates to the server in seconds.")
|
| 58 | 58 |
@click.option('--parent', type=click.STRING, default='main', show_default=True,
|
| ... | ... | @@ -37,20 +37,11 @@ class Bot: |
| 37 | 37 |
def session(self, work, context):
|
| 38 | 38 |
loop = asyncio.get_event_loop()
|
| 39 | 39 |
|
| 40 |
- self._bot_session.create_bot_session(work, context)
|
|
| 41 |
- |
|
| 42 | 40 |
try:
|
| 43 |
- task = asyncio.ensure_future(self._update_bot_session())
|
|
| 41 |
+ task = asyncio.ensure_future(self._bot_session.run(work, context))
|
|
| 44 | 42 |
loop.run_forever()
|
| 45 | 43 |
except KeyboardInterrupt:
|
| 46 | 44 |
pass
|
| 47 | 45 |
finally:
|
| 48 | 46 |
task.cancel()
|
| 49 | 47 |
loop.close()
|
| 50 |
- |
|
| 51 |
- async def _update_bot_session(self):
|
|
| 52 |
- """
|
|
| 53 |
- Calls the server periodically to inform the server the client has not died.
|
|
| 54 |
- """
|
|
| 55 |
- while True:
|
|
| 56 |
- self._bot_session.update_bot_session()
|
| ... | ... | @@ -21,8 +21,10 @@ Interface to grpc |
| 21 | 21 |
"""
|
| 22 | 22 |
|
| 23 | 23 |
import logging
|
| 24 |
+import grpc
|
|
| 24 | 25 |
|
| 25 | 26 |
from buildgrid._protos.google.devtools.remoteworkers.v1test2 import bots_pb2, bots_pb2_grpc
|
| 27 |
+from ..settings import INTERVAL_BUFFER
|
|
| 26 | 28 |
|
| 27 | 29 |
|
| 28 | 30 |
class BotInterface:
|
| ... | ... | @@ -34,15 +36,23 @@ class BotInterface: |
| 34 | 36 |
self.logger = logging.getLogger(__name__)
|
| 35 | 37 |
self.logger.info(channel)
|
| 36 | 38 |
self._stub = bots_pb2_grpc.BotsStub(channel)
|
| 37 |
- self._interval = interval
|
|
| 39 |
+ self.interval = interval
|
|
| 38 | 40 |
|
| 39 | 41 |
def create_bot_session(self, parent, bot_session):
|
| 40 | 42 |
request = bots_pb2.CreateBotSessionRequest(parent=parent,
|
| 41 | 43 |
bot_session=bot_session)
|
| 42 |
- return self._stub.CreateBotSession(request)
|
|
| 44 |
+ return self._bot_call(self._stub.CreateBotSession, request)
|
|
| 43 | 45 |
|
| 44 | 46 |
def update_bot_session(self, bot_session, update_mask=None):
|
| 45 | 47 |
request = bots_pb2.UpdateBotSessionRequest(name=bot_session.name,
|
| 46 | 48 |
bot_session=bot_session,
|
| 47 | 49 |
update_mask=update_mask)
|
| 48 |
- return self._stub.UpdateBotSession(request, timeout=self._interval)
|
|
| 50 |
+ return self._bot_call(self._stub.UpdateBotSession, request)
|
|
| 51 |
+ |
|
| 52 |
+ def _bot_call(self, call, request):
|
|
| 53 |
+ try:
|
|
| 54 |
+ return call(request, timeout=self.interval + INTERVAL_BUFFER)
|
|
| 55 |
+ except grpc.RpcError as e:
|
|
| 56 |
+ if e.code() in grpc.StatusCode:
|
|
| 57 |
+ self.logger.warning("Server responded with error: {}".format(e.code()))
|
|
| 58 |
+ return None
|
| ... | ... | @@ -49,7 +49,9 @@ class BotSession: |
| 49 | 49 |
self._bot_id = '{}.{}'.format(parent, platform.node())
|
| 50 | 50 |
self._context = None
|
| 51 | 51 |
self._interface = interface
|
| 52 |
+ self.connected = False
|
|
| 52 | 53 |
self._leases = {}
|
| 54 |
+ self._futures = {}
|
|
| 53 | 55 |
self._name = None
|
| 54 | 56 |
self._parent = parent
|
| 55 | 57 |
self._status = BotStatus.OK.value
|
| ... | ... | @@ -63,12 +65,35 @@ class BotSession: |
| 63 | 65 |
def add_worker(self, worker):
|
| 64 | 66 |
self._worker = worker
|
| 65 | 67 |
|
| 68 |
+ async def run(self, work, context=None):
|
|
| 69 |
+ """
|
|
| 70 |
+ Run a bot session that waits on bot session calls and reconnects if
|
|
| 71 |
+ there is no response
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|
| 72 |
+ """
|
|
| 73 |
+ self.logger.info("Starting bot session runner")
|
|
| 74 |
+ while True:
|
|
| 75 |
+ if self.connected is False:
|
|
| 76 |
+ self.create_bot_session(work, context)
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|
| 77 |
+ else:
|
|
| 78 |
+ self.update_bot_session()
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|
| 79 |
+ |
|
| 80 |
+ if self._futures:
|
|
| 81 |
+ await asyncio.wait(self._futures.values(),
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|
| 82 |
+ timeout=self._interface.interval,
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|
| 83 |
+ return_when=asyncio.FIRST_COMPLETED)
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|
| 84 |
+ elif self.connected is False:
|
|
| 85 |
+ await asyncio.sleep(self._interface.interval)
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|
| 86 |
+ |
|
| 66 | 87 |
def create_bot_session(self, work, context=None):
|
| 67 | 88 |
self.logger.debug("Creating bot session")
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| 68 | 89 |
self._work = work
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| 69 | 90 |
self._context = context
|
| 70 | 91 |
|
| 71 | 92 |
session = self._interface.create_bot_session(self._parent, self.get_pb2())
|
| 93 |
+ if session is None:
|
|
| 94 |
+ self.connected = False
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|
| 95 |
+ return
|
|
| 96 |
+ self.connected = True
|
|
| 72 | 97 |
self._name = session.name
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| 73 | 98 |
|
| 74 | 99 |
self.logger.info("Created bot session with name: [{}]".format(self._name))
|
| ... | ... | @@ -79,6 +104,10 @@ class BotSession: |
| 79 | 104 |
def update_bot_session(self):
|
| 80 | 105 |
self.logger.debug("Updating bot session: [{}]".format(self._bot_id))
|
| 81 | 106 |
session = self._interface.update_bot_session(self.get_pb2())
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| 107 |
+ if session is None:
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|
| 108 |
+ self.connected = False
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|
| 109 |
+ return
|
|
| 110 |
+ self.connected = True
|
|
| 82 | 111 |
for k, v in list(self._leases.items()):
|
| 83 | 112 |
if v.state == LeaseState.COMPLETED.value:
|
| 84 | 113 |
del self._leases[k]
|
| ... | ... | @@ -100,6 +129,7 @@ class BotSession: |
| 100 | 129 |
def lease_completed(self, lease):
|
| 101 | 130 |
lease.state = LeaseState.COMPLETED.value
|
| 102 | 131 |
self._leases[lease.id] = lease
|
| 132 |
+ del self._futures[lease.id]
|
|
| 103 | 133 |
|
| 104 | 134 |
def _update_lease_from_server(self, lease):
|
| 105 | 135 |
"""
|
| ... | ... | @@ -110,7 +140,7 @@ class BotSession: |
| 110 | 140 |
lease.state = LeaseState.ACTIVE.value
|
| 111 | 141 |
self._leases[lease.id] = lease
|
| 112 | 142 |
self.update_bot_session()
|
| 113 |
- asyncio.ensure_future(self.create_work(lease))
|
|
| 143 |
+ self._futures[lease.id] = asyncio.ensure_future(self.create_work(lease))
|
|
| 114 | 144 |
|
| 115 | 145 |
async def create_work(self, lease):
|
| 116 | 146 |
self.logger.debug("Work created: [{}]".format(lease.id))
|