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[Notes] [Git][BuildGrid/buildgrid][mablanch/117-job-scheduler-refactoring] 7 commits: Rename ExecutionStage to OperationStage for clarity

Title: GitLab

Martin Blanchard pushed to branch mablanch/117-job-scheduler-refactoring at BuildGrid / buildgrid

Commits:

11 changed files:

Changes:

  • buildgrid/_app/bots/buildbox.py
    ... ... @@ -17,8 +17,6 @@ import os
    17 17 
     import subprocess
    18 18 
     import tempfile
    19 19
    20 
    -from google.protobuf import any_pb2
    21 
    -
    22 20 
     from buildgrid.client.cas import download, upload
    23 21 
     from buildgrid._exceptions import BotError
    24 22 
     from buildgrid._protos.build.bazel.remote.execution.v2 import remote_execution_pb2
    ... ... @@ -29,13 +27,14 @@ from buildgrid.utils import read_file, write_file
    29 27 
     def work_buildbox(context, lease):
    30 28 
         """Executes a lease for a build action, using buildbox.
    31 29 
         """
    32 
    -
    33 30 
         local_cas_directory = context.local_cas
    34 31 
         # instance_name = context.parent
    35 32 
         logger = context.logger
    36 33
    37 34 
         action_digest = remote_execution_pb2.Digest()
    35 
    +
    38 36 
         lease.payload.Unpack(action_digest)
    37 
    +    lease.result.Clear()
    39 38
    40 39 
         with download(context.cas_channel) as downloader:
    41 40 
             action = downloader.get_message(action_digest,
    ... ... @@ -131,10 +130,7 @@ def work_buildbox(context, lease):
    131 130
    132 131 
                 action_result.output_directories.extend([output_directory])
    133 132
    134 
    -            action_result_any = any_pb2.Any()
    135 
    -            action_result_any.Pack(action_result)
    136 
    -
    137 
    -            lease.result.CopyFrom(action_result_any)
    133 
    +            lease.result.Pack(action_result)
    138 134
    139 135 
         return lease
    140 136

  • buildgrid/_app/bots/dummy.py
    ... ... @@ -16,9 +16,18 @@
    16 16 
     import random
    17 17 
     import time
    18 18
    19 
    +from buildgrid._protos.build.bazel.remote.execution.v2 import remote_execution_pb2
    20 
    +
    19 21
    20 22 
     def work_dummy(context, lease):
    21 23 
         """ Just returns lease after some random time
    22 24 
         """
    25 
    +    lease.result.Clear()
    26 
    +
    23 27 
         time.sleep(random.randint(1, 5))
    28 
    +
    29 
    +    action_result = remote_execution_pb2.ActionResult()
    30 
    +
    31 
    +    lease.result.Pack(action_result)
    32 
    +
    24 33 
         return lease

  • buildgrid/_app/bots/host.py
    ... ... @@ -17,8 +17,6 @@ import os
    17 17 
     import subprocess
    18 18 
     import tempfile
    19 19
    20 
    -from google.protobuf import any_pb2
    21 
    -
    22 20 
     from buildgrid.client.cas import download, upload
    23 21 
     from buildgrid._protos.build.bazel.remote.execution.v2 import remote_execution_pb2
    24 22 
     from buildgrid.utils import output_file_maker, output_directory_maker
    ... ... @@ -27,12 +25,13 @@ from buildgrid.utils import output_file_maker, output_directory_maker
    27 25 
     def work_host_tools(context, lease):
    28 26 
         """Executes a lease for a build action, using host tools.
    29 27 
         """
    30 
    -
    31 28 
         instance_name = context.parent
    32 29 
         logger = context.logger
    33 30
    34 31 
         action_digest = remote_execution_pb2.Digest()
    32 
    +
    35 33 
         lease.payload.Unpack(action_digest)
    34 
    +    lease.result.Clear()
    36 35
    37 36 
         with tempfile.TemporaryDirectory() as temp_directory:
    38 37 
             with download(context.cas_channel, instance=instance_name) as downloader:
    ... ... @@ -122,9 +121,6 @@ def work_host_tools(context, lease):
    122 121
    123 122 
                 action_result.output_directories.extend(output_directories)
    124 123
    125 
    -        action_result_any = any_pb2.Any()
    126 
    -        action_result_any.Pack(action_result)
    127 
    -
    128 
    -        lease.result.CopyFrom(action_result_any)
    124 
    +        lease.result.Pack(action_result)
    129 125
    130 126 
         return lease

  • buildgrid/server/bots/instance.py
    ... ... @@ -66,10 +66,10 @@ class BotsInterface:
    66 66 
             self._bot_sessions[name] = bot_session
    67 67 
             self.logger.info("Created bot session name=[{}] with bot_id=[{}]".format(name, bot_id))
    68 68
    69 
    -        # For now, one lease at a time.
    70 
    -        lease = self._scheduler.create_lease()
    71 
    -        if lease:
    72 
    -            bot_session.leases.extend([lease])
    69 
    +        # TODO: Send worker capabilities to the scheduler!
    70 
    +        leases = self._scheduler.request_job_leases({})
    71 
    +        if leases:
    72 
    +            bot_session.leases.extend(leases)
    73 73
    74 74 
             return bot_session
    75 75
    ... ... @@ -85,11 +85,11 @@ class BotsInterface:
    85 85 
             del bot_session.leases[:]
    86 86 
             bot_session.leases.extend(leases)
    87 87
    88 
    -        # For now, one lease at a time
    88 
    +        # TODO: Send worker capabilities to the scheduler!
    89 89 
             if not bot_session.leases:
    90 
    -            lease = self._scheduler.create_lease()
    91 
    -            if lease:
    92 
    -                bot_session.leases.extend([lease])
    90 
    +            leases = self._scheduler.request_job_leases({})
    91 
    +            if leases:
    92 
    +                bot_session.leases.extend(leases)
    93 93
    94 94 
             self._bot_sessions[name] = bot_session
    95 95 
             return bot_session
    ... ... @@ -109,7 +109,8 @@ class BotsInterface:
    109 109 
             if server_state == LeaseState.PENDING:
    110 110
    111 111 
                 if client_state == LeaseState.ACTIVE:
    112 
    -                self._scheduler.update_job_lease_state(client_lease.id, client_lease.state)
    112 
    +                self._scheduler.update_job_lease_state(client_lease.id,
    113 
    +                                                       LeaseState.ACTIVE)
    113 114 
                 elif client_state == LeaseState.COMPLETED:
    114 115 
                     # TODO: Lease was rejected
    115 116 
                     raise NotImplementedError("'Not Accepted' is unsupported")
    ... ... @@ -122,8 +123,10 @@ class BotsInterface:
    122 123 
                     pass
    123 124
    124 125 
                 elif client_state == LeaseState.COMPLETED:
    125 
    -                self._scheduler.update_job_lease_state(client_lease.id, client_lease.state)
    126 
    -                self._scheduler.job_complete(client_lease.id, client_lease.result, client_lease.status)
    126 
    +                self._scheduler.update_job_lease_state(client_lease.id,
    127 
    +                                                       LeaseState.COMPLETED,
    128 
    +                                                       lease_status=client_lease.status,
    129 
    +                                                       lease_result=client_lease.result)
    127 130 
                     return None
    128 131
    129 132 
                 else:

  • buildgrid/server/execution/instance.py
    ... ... @@ -48,12 +48,15 @@ class ExecutionInstance:
    48 48 
             if not action:
    49 49 
                 raise FailedPreconditionError("Could not get action from storage.")
    50 50
    51 
    -        job = Job(action_digest, action.do_not_cache, message_queue)
    51 
    +        job = Job(action, action_digest)
    52 
    +        if message_queue is not None:
    53 
    +            job.register_client(message_queue)
    54 
    +
    52 55 
             self.logger.info("Operation name: [{}]".format(job.name))
    53 56
    54 
    -        self._scheduler.append_job(job, skip_cache_lookup)
    57 
    +        self._scheduler.queue_job(job, skip_cache_lookup)
    55 58
    56 
    -        return job.get_operation()
    59 
    +        return job.operation
    57 60
    58 61 
         def register_message_client(self, name, queue):
    59 62 
             try:

  • buildgrid/server/job.py
    ... ... @@ -11,151 +11,211 @@
    11 11 
     # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12 12 
     # See the License for the specific language governing permissions and
    13 13 
     # limitations under the License.
    14 
    -#
    15 
    -# Authors:
    16 
    -#        Finn Ball <finn ball codethink co uk>
    14 
    +
    17 15
    18 16 
     import logging
    19 17 
     import uuid
    20 18 
     from enum import Enum
    21 19
    22 
    -from google.protobuf import any_pb2
    23 
    -
    24 20 
     from buildgrid._protos.build.bazel.remote.execution.v2 import remote_execution_pb2
    25 21 
     from buildgrid._protos.google.devtools.remoteworkers.v1test2 import bots_pb2
    26 22 
     from buildgrid._protos.google.longrunning import operations_pb2
    27 23
    28 24
    29 
    -class ExecuteStage(Enum):
    25 
    +class OperationStage(Enum):
    26 
    +    # Initially unknown stage.
    30 27 
         UNKNOWN = remote_execution_pb2.ExecuteOperationMetadata.Stage.Value('UNKNOWN')
    31 
    -
    32 28 
         # Checking the result against the cache.
    33 29 
         CACHE_CHECK = remote_execution_pb2.ExecuteOperationMetadata.Stage.Value('CACHE_CHECK')
    34 
    -
    35 30 
         # Currently idle, awaiting a free machine to execute.
    36 31 
         QUEUED = remote_execution_pb2.ExecuteOperationMetadata.Stage.Value('QUEUED')
    37 
    -
    38 32 
         # Currently being executed by a worker.
    39 33 
         EXECUTING = remote_execution_pb2.ExecuteOperationMetadata.Stage.Value('EXECUTING')
    40 
    -
    41 34 
         # Finished execution.
    42 35 
         COMPLETED = remote_execution_pb2.ExecuteOperationMetadata.Stage.Value('COMPLETED')
    43 36
    44 37
    45 
    -class BotStatus(Enum):
    46 
    -    BOT_STATUS_UNSPECIFIED = bots_pb2.BotStatus.Value('BOT_STATUS_UNSPECIFIED')
    47 
    -
    48 
    -    # The bot is healthy, and will accept leases as normal.
    49 
    -    OK = bots_pb2.BotStatus.Value('OK')
    50 
    -
    51 
    -    # The bot is unhealthy and will not accept new leases.
    52 
    -    UNHEALTHY = bots_pb2.BotStatus.Value('UNHEALTHY')
    53 
    -
    54 
    -    # The bot has been asked to reboot the host.
    55 
    -    HOST_REBOOTING = bots_pb2.BotStatus.Value('HOST_REBOOTING')
    56 
    -
    57 
    -    # The bot has been asked to shut down.
    58 
    -    BOT_TERMINATING = bots_pb2.BotStatus.Value('BOT_TERMINATING')
    59 
    -
    60 
    -
    61 38 
     class LeaseState(Enum):
    39 
    +    # Initially unknown state.
    62 40 
         LEASE_STATE_UNSPECIFIED = bots_pb2.LeaseState.Value('LEASE_STATE_UNSPECIFIED')
    63 
    -
    64 41 
         # The server expects the bot to accept this lease.
    65 42 
         PENDING = bots_pb2.LeaseState.Value('PENDING')
    66 
    -
    67 43 
         # The bot has accepted this lease.
    68 44 
         ACTIVE = bots_pb2.LeaseState.Value('ACTIVE')
    69 
    -
    70 45 
         # The bot is no longer leased.
    71 46 
         COMPLETED = bots_pb2.LeaseState.Value('COMPLETED')
    72 
    -
    73 47 
         # The bot should immediately release all resources associated with the lease.
    74 48 
         CANCELLED = bots_pb2.LeaseState.Value('CANCELLED')
    75 49
    76 50
    77 51 
     class Job:
    78 52
    79 
    -    def __init__(self, action_digest, do_not_cache=False, message_queue=None):
    80 
    -        self.lease = None
    53 
    +    def __init__(self, action, action_digest):
    81 54 
             self.logger = logging.getLogger(__name__)
    82 
    -        self.n_tries = 0
    83 
    -        self.result = None
    84 
    -        self.result_cached = False
    85 55
    86 
    -        self._action_digest = action_digest
    87 
    -        self._do_not_cache = do_not_cache
    88 
    -        self._execute_stage = ExecuteStage.UNKNOWN
    89 56 
             self._name = str(uuid.uuid4())
    90 
    -        self._operation = operations_pb2.Operation(name=self._name)
    91 
    -        self._operation_update_queues = []
    57 
    +        self._action = remote_execution_pb2.Action()
    58 
    +        self._operation = operations_pb2.Operation()
    59 
    +        self._lease = None
    60 
    +
    61 
    +        self.__execute_response = None
    62 
    +        self.__operation_metadata = remote_execution_pb2.ExecuteOperationMetadata()
    92 63
    93 
    -        if message_queue is not None:
    94 
    -            self.register_client(message_queue)
    64 
    +        self.__operation_metadata.action_digest.CopyFrom(action_digest)
    65 
    +        self.__operation_metadata.stage = OperationStage.UNKNOWN.value
    66 
    +
    67 
    +        self._action.CopyFrom(action)
    68 
    +        self._do_not_cache = self._action.do_not_cache
    69 
    +        self._operation_update_queues = []
    70 
    +        self._operation.name = self._name
    71 
    +        self._operation.done = False
    72 
    +        self._n_tries = 0
    95 73
    96 74 
         @property
    97 75 
         def name(self):
    98 76 
             return self._name
    99 77
    78 
    +    @property
    79 
    +    def do_not_cache(self):
    80 
    +        return self._do_not_cache
    81 
    +
    82 
    +    @property
    83 
    +    def action(self):
    84 
    +        return self._action
    85 
    +
    100 86 
         @property
    101 87 
         def action_digest(self):
    102 
    -        return self._action_digest
    88 
    +        return self.__operation_metadata.action_digest
    103 89
    104 90 
         @property
    105 
    -    def do_not_cache(self):
    106 
    -        return self._do_not_cache
    91 
    +    def action_result(self):
    92 
    +        if self.__execute_response is not None:
    93 
    +            return self.__execute_response.result
    94 
    +        else:
    95 
    +            return None
    107 96
    108 
    -    def check_job_finished(self):
    109 
    -        if not self._operation_update_queues:
    110 
    -            return self._operation.done
    111 
    -        return False
    97 
    +    @property
    98 
    +    def operation(self):
    99 
    +        return self._operation
    100 
    +
    101 
    +    @property
    102 
    +    def operation_stage(self):
    103 
    +        return OperationStage(self.__operation_metadata.state)
    104 
    +
    105 
    +    @property
    106 
    +    def lease(self):
    107 
    +        return self._lease
    108 
    +
    109 
    +    @property
    110 
    +    def lease_state(self):
    111 
    +        if self._lease is not None:
    112 
    +            return LeaseState(self._lease.state)
    113 
    +        else:
    114 
    +            return None
    115 
    +
    116 
    +    @property
    117 
    +    def n_tries(self):
    118 
    +        return self._n_tries
    119 
    +
    120 
    +    @property
    121 
    +    def n_clients(self):
    122 
    +        return len(self._operation_update_queues)
    112 123
    113 124 
         def register_client(self, queue):
    125 
    +        """Subscribes to the job's :class:`Operation` stage change events.
    126 
    +
    127 
    +        Args:
    128 
    +            queue (queue.Queue): the event queue to register.
    129 
    +        """
    114 130 
             self._operation_update_queues.append(queue)
    115 
    -        queue.put(self.get_operation())
    131 
    +        queue.put(self._operation)
    116 132
    117 133 
         def unregister_client(self, queue):
    134 
    +        """Unsubscribes to the job's :class:`Operation` stage change events.
    135 
    +
    136 
    +        Args:
    137 
    +            queue (queue.Queue): the event queue to unregister.
    138 
    +        """
    118 139 
             self._operation_update_queues.remove(queue)
    119 140
    120 
    -    def get_operation(self):
    121 
    -        self._operation.metadata.CopyFrom(self._pack_any(self.get_operation_meta()))
    122 
    -        if self.result is not None:
    123 
    -            self._operation.done = True
    124 
    -            response = remote_execution_pb2.ExecuteResponse(result=self.result,
    125 
    -                                                            cached_result=self.result_cached)
    141 
    +    def set_cached_result(self, action_result):
    142 
    +        """Allows specifying an action result form the action cache for the job.
    143 
    +        """
    144 
    +        self.__execute_response = remote_execution_pb2.ExecuteResponse()
    145 
    +        self.__execute_response.result.CopyFrom(action_result)
    146 
    +        self.__execute_response.cached_result = True
    126 147
    127 
    -            if not self.result_cached:
    128 
    -                response.status.CopyFrom(self.lease.status)
    148 
    +    def create_lease(self):
    149 
    +        """Emits a new :class:`Lease` for the job.
    129 150
    130 
    -            self._operation.response.CopyFrom(self._pack_any(response))
    151 
    +        Only one :class:`Lease` can be emitted for a given job. This method
    152 
    +        should only be used once, any furhter calls are ignored.
    153 
    +        """
    154 
    +        if self._lease is not None:
    155 
    +            return None
    131 156
    132 
    -        return self._operation
    157 
    +        self._lease = bots_pb2.Lease()
    158 
    +        self._lease.id = self._name
    159 
    +        self._lease.payload.Pack(self.__operation_metadata.action_digest)
    160 
    +        self._lease.state = LeaseState.PENDING.value
    133 161
    134 
    -    def get_operation_meta(self):
    135 
    -        meta = remote_execution_pb2.ExecuteOperationMetadata()
    136 
    -        meta.stage = self._execute_stage.value
    137 
    -        meta.action_digest.CopyFrom(self._action_digest)
    162 
    +        return self._lease
    138 163
    139 
    -        return meta
    164 
    +    def update_lease_state(self, state, status=None, result=None):
    165 
    +        """Operates a state transition for the job's current :class:Lease.
    140 166
    141 
    -    def create_lease(self):
    142 
    -        action_digest = self._pack_any(self._action_digest)
    167 
    +        Args:
    168 
    +            state (LeaseState): the lease state to transition to.
    169 
    +            status (google.rpc.Status): the lease execution status, only
    170 
    +                required if `state` is `COMPLETED`.
    171 
    +            result (google.protobuf.Any): the lease execution result, only
    172 
    +                required if `state` is `COMPLETED`.
    173 
    +        """
    174 
    +        if state.value == self._lease.state:
    175 
    +            return
    143 176
    144 
    -        lease = bots_pb2.Lease(id=self.name,
    145 
    -                               payload=action_digest,
    146 
    -                               state=LeaseState.PENDING.value)
    147 
    -        self.lease = lease
    148 
    -        return lease
    177 
    +        self._lease.state = state.value
    149 178
    150 
    -    def get_operations(self):
    151 
    -        return operations_pb2.ListOperationsResponse(operations=[self.get_operation()])
    179 
    +        if self._lease.state == LeaseState.PENDING.value:
    180 
    +            self._lease.status.Clear()
    181 
    +            self._lease.result.Clear()
    152 182
    153 
    -    def update_execute_stage(self, stage):
    154 
    -        self._execute_stage = stage
    155 
    -        for queue in self._operation_update_queues:
    156 
    -            queue.put(self.get_operation())
    183 
    +        elif self._lease.state == LeaseState.COMPLETED.value:
    184 
    +            action_result = remote_execution_pb2.ActionResult()
    185 
    +
    186 
    +            # TODO: Make a distinction between build and bot failures!
    187 
    +            if status.code != 0:
    188 
    +                self._do_not_cache = True
    189 
    +
    190 
    +            if result is not None:
    191 
    +                assert result.Is(action_result.DESCRIPTOR)
    192 
    +                result.Unpack(action_result)
    193 
    +
    194 
    +            self.__execute_response = remote_execution_pb2.ExecuteResponse()
    195 
    +            self.__execute_response.result.CopyFrom(action_result)
    196 
    +            self.__execute_response.cached_result = False
    197 
    +            self.__execute_response.status.CopyFrom(status)
    198 
    +
    199 
    +    def update_operation_stage(self, stage):
    200 
    +        """Operates a stage transition for the job's :class:Operation.
    157 201
    158 
    -    def _pack_any(self, pack):
    159 
    -        some_any = any_pb2.Any()
    160 
    -        some_any.Pack(pack)
    161 
    -        return some_any
    202 
    +        Args:
    203 
    +            stage (OperationStage): the operation stage to transition to.
    204 
    +        """
    205 
    +        if stage.value == self.__operation_metadata.stage:
    206 
    +            return
    207 
    +
    208 
    +        self.__operation_metadata.stage = stage.value
    209 
    +
    210 
    +        if self.__operation_metadata.stage == OperationStage.QUEUED.value:
    211 
    +            self._n_tries += 1
    212 
    +
    213 
    +        elif self.__operation_metadata.stage == OperationStage.COMPLETED.value:
    214 
    +            if self.__execute_response is not None:
    215 
    +                self._operation.response.Pack(self.__execute_response)
    216 
    +            self._operation.done = True
    217 
    +
    218 
    +        self._operation.metadata.Pack(self.__operation_metadata)
    219 
    +
    220 
    +        for queue in self._operation_update_queues:
    221 
    +            queue.put(self._operation)

  • buildgrid/server/operations/instance.py
    ... ... @@ -22,6 +22,7 @@ An instance of the LongRunningOperations Service.
    22 22 
     import logging
    23 23
    24 24 
     from buildgrid._exceptions import InvalidArgumentError
    25 
    +from buildgrid._protos.google.longrunning import operations_pb2
    25 26
    26 27
    27 28 
     class OperationsInstance:
    ... ... @@ -34,18 +35,21 @@ class OperationsInstance:
    34 35 
             server.add_operations_instance(self, instance_name)
    35 36
    36 37 
         def get_operation(self, name):
    37 
    -        operation = self._scheduler.jobs.get(name)
    38 
    +        job = self._scheduler.jobs.get(name)
    38 39
    39 
    -        if operation is None:
    40 
    +        if job is None:
    40 41 
                 raise InvalidArgumentError("Operation name does not exist: [{}]".format(name))
    41 42
    42 43 
             else:
    43 
    -            return operation.get_operation()
    44 
    +            return job.operation
    44 45
    45 46 
         def list_operations(self, list_filter, page_size, page_token):
    46 47 
             # TODO: Pages
    47 48 
             # Spec says number of pages and length of a page are optional
    48 
    -        return self._scheduler.get_operations()
    49 
    +        response = operations_pb2.ListOperationsResponse()
    50 
    +        response.operations.extend([job.operation for job in self._scheduler.list_jobs()])
    51 
    +
    52 
    +        return response
    49 53
    50 54 
         def delete_operation(self, name):
    51 55 
             try:

  • buildgrid/server/scheduler.py
    ... ... @@ -11,9 +11,7 @@
    11 11 
     # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12 12 
     # See the License for the specific language governing permissions and
    13 13 
     # limitations under the License.
    14 
    -#
    15 
    -# Authors:
    16 
    -#        Finn Ball <finn ball codethink co uk>
    14 
    +
    17 15
    18 16 
     """
    19 17 
     Scheduler
    ... ... @@ -24,10 +22,8 @@ Schedules jobs.
    24 22 
     from collections import deque
    25 23
    26 24 
     from buildgrid._exceptions import NotFoundError
    27 
    -from buildgrid._protos.build.bazel.remote.execution.v2 import remote_execution_pb2
    28 
    -from buildgrid._protos.google.longrunning import operations_pb2
    29 25
    30 
    -from .job import ExecuteStage, LeaseState
    26 
    +from .job import OperationStage, LeaseState
    31 27
    32 28
    33 29 
     class Scheduler:
    ... ... @@ -39,80 +35,96 @@ class Scheduler:
    39 35 
             self.jobs = {}
    40 36 
             self.queue = deque()
    41 37
    42 
    -    def register_client(self, name, queue):
    43 
    -        self.jobs[name].register_client(queue)
    38 
    +    def register_client(self, job_name, queue):
    39 
    +        self.jobs[job_name].register_client(queue)
    40 
    +
    41 
    +    def unregister_client(self, job_name, queue):
    42 
    +        self.jobs[job_name].unregister_client(queue)
    44 43
    45 
    -    def unregister_client(self, name, queue):
    46 
    -        job = self.jobs[name]
    47 
    -        job.unregister_client(queue)
    48 
    -        if job.check_job_finished():
    49 
    -            del self.jobs[name]
    44 
    +        if self.jobs[job_name].n_clients == 0:
    45 
    +            del self.jobs[job_name]
    50 46
    51 
    -    def append_job(self, job, skip_cache_lookup=False):
    47 
    +    def queue_job(self, job, skip_cache_lookup=False):
    52 48 
             self.jobs[job.name] = job
    49 
    +
    50 
    +        operation_stage = None
    53 51 
             if self._action_cache is not None and not skip_cache_lookup:
    54 52 
                 try:
    55 
    -                cached_result = self._action_cache.get_action_result(job.action_digest)
    53 
    +                action_result = self._action_cache.get_action_result(job.action_digest)
    56 54 
                 except NotFoundError:
    55 
    +                operation_stage = OperationStage.QUEUED
    57 56 
                     self.queue.append(job)
    58 
    -                job.update_execute_stage(ExecuteStage.QUEUED)
    59 57
    60 58 
                 else:
    61 
    -                job.result = cached_result
    62 
    -                job.result_cached = True
    63 
    -                job.update_execute_stage(ExecuteStage.COMPLETED)
    59 
    +                job.set_cached_result(action_result)
    60 
    +                operation_stage = OperationStage.COMPLETED
    64 61
    65 62 
             else:
    63 
    +            operation_stage = OperationStage.QUEUED
    66 64 
                 self.queue.append(job)
    67 
    -            job.update_execute_stage(ExecuteStage.QUEUED)
    68 65
    69 
    -    def retry_job(self, name):
    70 
    -        if name in self.jobs:
    71 
    -            job = self.jobs[name]
    66 
    +        job.update_operation_stage(operation_stage)
    67 
    +
    68 
    +    def retry_job(self, job_name):
    69 
    +        if job_name in self.jobs:
    70 
    +            job = self.jobs[job_name]
    72 71 
                 if job.n_tries >= self.MAX_N_TRIES:
    73 72 
                     # TODO: Decide what to do with these jobs
    74 
    -                job.update_execute_stage(ExecuteStage.COMPLETED)
    73 
    +                job.update_operation_stage(OperationStage.COMPLETED)
    75 74 
                     # TODO: Mark these jobs as done
    76 75 
                 else:
    77 
    -                job.update_execute_stage(ExecuteStage.QUEUED)
    78 
    -                job.n_tries += 1
    76 
    +                job.update_operation_stage(OperationStage.QUEUED)
    79 77 
                     self.queue.appendleft(job)
    80 78
    81 
    -    def job_complete(self, name, result, status):
    82 
    -        job = self.jobs[name]
    83 
    -        job.lease.status.CopyFrom(status)
    84 
    -        action_result = remote_execution_pb2.ActionResult()
    85 
    -        result.Unpack(action_result)
    86 
    -        job.result = action_result
    87 
    -        if not job.do_not_cache and self._action_cache is not None:
    88 
    -            if not job.lease.status.code:
    89 
    -                self._action_cache.update_action_result(job.action_digest, action_result)
    90 
    -        job.update_execute_stage(ExecuteStage.COMPLETED)
    91 
    -
    92 
    -    def get_operations(self):
    93 
    -        response = operations_pb2.ListOperationsResponse()
    94 
    -        for v in self.jobs.values():
    95 
    -            response.operations.extend([v.get_operation()])
    96 
    -        return response
    97 
    -
    98 
    -    def update_job_lease_state(self, name, state):
    99 
    -        job = self.jobs[name]
    100 
    -        job.lease.state = state
    101 
    -
    102 
    -    def get_job_lease(self, name):
    103 
    -        return self.jobs[name].lease
    104 
    -
    105 
    -    def cancel_session(self, name):
    106 
    -        job = self.jobs[name]
    107 
    -        state = job.lease.state
    108 
    -        if state in (LeaseState.PENDING.value, LeaseState.ACTIVE.value):
    109 
    -            self.retry_job(name)
    110 
    -
    111 
    -    def create_lease(self):
    112 
    -        if self.queue:
    113 
    -            job = self.queue.popleft()
    114 
    -            job.update_execute_stage(ExecuteStage.EXECUTING)
    115 
    -            job.create_lease()
    116 
    -            job.lease.state = LeaseState.PENDING.value
    117 
    -            return job.lease
    118 
    -        return None
    79 
    +    def list_jobs(self):
    80 
    +        return self.jobs.values()
    81 
    +
    82 
    +    def request_job_leases(self, worker_capabilities):
    83 
    +        """Generates a list of the highest priority leases to be run.
    84 
    +
    85 
    +        Args:
    86 
    +            worker_capabilities (dict): a set of key-value pairs decribing the
    87 
    +                worker properties, configuration and state at the time of the
    88 
    +                request.
    89 
    +        """
    90 
    +        if not self.queue:
    91 
    +            return []
    92 
    +
    93 
    +        job = self.queue.popleft()
    94 
    +        # For now, one lease at a time:
    95 
    +        lease = job.create_lease()
    96 
    +
    97 
    +        return [lease]
    98 
    +
    99 
    +    def update_job_lease_state(self, job_name, lease_state, lease_status=None, lease_result=None):
    100 
    +        """Requests a state transition for a job's current :class:Lease.
    101 
    +
    102 
    +        Args:
    103 
    +            job_name (str): name of the job to query.
    104 
    +            lease_state (LeaseState): the lease state to transition to.
    105 
    +            lease_status (google.rpc.Status): the lease execution status, only
    106 
    +                required if `lease_state` is `COMPLETED`.
    107 
    +            lease_result (google.protobuf.Any): the lease execution result, only
    108 
    +                required if `lease_state` is `COMPLETED`.
    109 
    +        """
    110 
    +        job = self.jobs[job_name]
    111 
    +
    112 
    +        if lease_state != LeaseState.COMPLETED:
    113 
    +            job.update_lease_state(lease_state)
    114 
    +
    115 
    +        else:
    116 
    +            job.update_lease_state(lease_state,
    117 
    +                                   status=lease_status, result=lease_result)
    118 
    +
    119 
    +            if self._action_cache is not None and not job.do_not_cache:
    120 
    +                self._action_cache.update_action_result(job.action_digest, job.action_result)
    121 
    +
    122 
    +            job.update_operation_stage(OperationStage.COMPLETED)
    123 
    +
    124 
    +    def get_job_lease(self, job_name):
    125 
    +        """Returns the lease associated to job, if any have been emitted yet."""
    126 
    +        return self.jobs[job_name].lease
    127 
    +
    128 
    +    def get_job_operation(self, job_name):
    129 
    +        """Returns the operation associated to job."""
    130 
    +        return self.jobs[job_name].operation

  • tests/integration/bots_service.py
    ... ... @@ -137,7 +137,7 @@ def test_update_leases_with_work(bot_session, context, instance):
    137 137 
                                                    bot_session=bot_session)
    138 138
    139 139 
         action_digest = remote_execution_pb2.Digest(hash='gaff')
    140 
    -    _inject_work(instance._instances[""]._scheduler, action_digest)
    140 
    +    _inject_work(instance._instances[""]._scheduler, action_digest=action_digest)
    141 141
    142 142 
         response = instance.CreateBotSession(request, context)
    143 143
    ... ... @@ -159,7 +159,7 @@ def test_update_leases_work_complete(bot_session, context, instance):
    159 159
    160 160 
         # Inject work
    161 161 
         action_digest = remote_execution_pb2.Digest(hash='gaff')
    162 
    -    _inject_work(instance._instances[""]._scheduler, action_digest)
    162 
    +    _inject_work(instance._instances[""]._scheduler, action_digest=action_digest)
    163 163
    164 164 
         request = bots_pb2.UpdateBotSessionRequest(name=response.name,
    165 165 
                                                    bot_session=response)
    ... ... @@ -174,6 +174,7 @@ def test_update_leases_work_complete(bot_session, context, instance):
    174 174 
         response = copy.deepcopy(instance.UpdateBotSession(request, context))
    175 175
    176 176 
         response.leases[0].state = LeaseState.COMPLETED.value
    177 
    +    response.leases[0].result.Pack(remote_execution_pb2.ActionResult())
    177 178
    178 179 
         request = bots_pb2.UpdateBotSessionRequest(name=response.name,
    179 180 
                                                    bot_session=response)
    ... ... @@ -187,7 +188,7 @@ def test_work_rejected_by_bot(bot_session, context, instance):
    187 188 
                                                    bot_session=bot_session)
    188 189 
         # Inject work
    189 190 
         action_digest = remote_execution_pb2.Digest(hash='gaff')
    190 
    -    _inject_work(instance._instances[""]._scheduler, action_digest)
    191 
    +    _inject_work(instance._instances[""]._scheduler, action_digest=action_digest)
    191 192
    192 193 
         # Simulated the severed binding between client and server
    193 194 
         response = copy.deepcopy(instance.CreateBotSession(request, context))
    ... ... @@ -209,7 +210,7 @@ def test_work_out_of_sync_from_pending(state, bot_session, context, instance):
    209 210 
                                                    bot_session=bot_session)
    210 211 
         # Inject work
    211 212 
         action_digest = remote_execution_pb2.Digest(hash='gaff')
    212 
    -    _inject_work(instance._instances[""]._scheduler, action_digest)
    213 
    +    _inject_work(instance._instances[""]._scheduler, action_digest=action_digest)
    213 214
    214 215 
         # Simulated the severed binding between client and server
    215 216 
         response = copy.deepcopy(instance.CreateBotSession(request, context))
    ... ... @@ -230,7 +231,7 @@ def test_work_out_of_sync_from_active(state, bot_session, context, instance):
    230 231 
                                                    bot_session=bot_session)
    231 232 
         # Inject work
    232 233 
         action_digest = remote_execution_pb2.Digest(hash='gaff')
    233 
    -    _inject_work(instance._instances[""]._scheduler, action_digest)
    234 
    +    _inject_work(instance._instances[""]._scheduler, action_digest=action_digest)
    234 235
    235 236 
         # Simulated the severed binding between client and server
    236 237 
         response = copy.deepcopy(instance.CreateBotSession(request, context))
    ... ... @@ -257,7 +258,7 @@ def test_work_active_to_active(bot_session, context, instance):
    257 258 
                                                    bot_session=bot_session)
    258 259 
         # Inject work
    259 260 
         action_digest = remote_execution_pb2.Digest(hash='gaff')
    260 
    -    _inject_work(instance._instances[""]._scheduler, action_digest)
    261 
    +    _inject_work(instance._instances[""]._scheduler, action_digest=action_digest)
    261 262
    262 263 
         # Simulated the severed binding between client and server
    263 264 
         response = copy.deepcopy(instance.CreateBotSession(request, context))
    ... ... @@ -279,8 +280,10 @@ def test_post_bot_event_temp(context, instance):
    279 280 
         context.set_code.assert_called_once_with(grpc.StatusCode.UNIMPLEMENTED)
    280 281
    281 282
    282 
    -def _inject_work(scheduler, action_digest=None):
    283 
    +def _inject_work(scheduler, action=None, action_digest=None):
    284 
    +    if not action:
    285 
    +        action = remote_execution_pb2.Action()
    283 286 
         if not action_digest:
    284 287 
             action_digest = remote_execution_pb2.Digest()
    285 
    -    j = job.Job(action_digest, False)
    286 
    -    scheduler.append_job(j, True)
    288 
    +    j = job.Job(action, action_digest)
    289 
    +    scheduler.queue_job(j, True)

  • tests/integration/execution_service.py
    ... ... @@ -82,7 +82,7 @@ def test_execute(skip_cache_lookup, instance, context):
    82 82 
         assert isinstance(result, operations_pb2.Operation)
    83 83 
         metadata = remote_execution_pb2.ExecuteOperationMetadata()
    84 84 
         result.metadata.Unpack(metadata)
    85 
    -    assert metadata.stage == job.ExecuteStage.QUEUED.value
    85 
    +    assert metadata.stage == job.OperationStage.QUEUED.value
    86 86 
         assert uuid.UUID(result.name, version=4)
    87 87 
         assert result.done is False
    88 88
    ... ... @@ -105,7 +105,7 @@ def test_no_action_digest_in_storage(instance, context):
    105 105
    106 106
    107 107 
     def test_wait_execution(instance, controller, context):
    108 
    -    j = job.Job(action_digest, None)
    108 
    +    j = job.Job(action, action_digest)
    109 109 
         j._operation.done = True
    110 110
    111 111 
         request = remote_execution_pb2.WaitExecutionRequest(name="{}/{}".format('', j.name))
    ... ... @@ -116,7 +116,7 @@ def test_wait_execution(instance, controller, context):
    116 116 
         action_result = remote_execution_pb2.ActionResult()
    117 117 
         action_result_any.Pack(action_result)
    118 118
    119 
    -    j.update_execute_stage(job.ExecuteStage.COMPLETED)
    119 
    +    j.update_operation_stage(job.OperationStage.COMPLETED)
    120 120
    121 121 
         response = instance.WaitExecution(request, context)
    122 122
    ... ... @@ -125,7 +125,7 @@ def test_wait_execution(instance, controller, context):
    125 125 
         assert isinstance(result, operations_pb2.Operation)
    126 126 
         metadata = remote_execution_pb2.ExecuteOperationMetadata()
    127 127 
         result.metadata.Unpack(metadata)
    128 
    -    assert metadata.stage == job.ExecuteStage.COMPLETED.value
    128 
    +    assert metadata.stage == job.OperationStage.COMPLETED.value
    129 129 
         assert uuid.UUID(result.name, version=4)
    130 130 
         assert result.done is True
    131 131

  • tests/integration/operations_service.py
    ... ... @@ -30,6 +30,7 @@ from buildgrid._protos.google.longrunning import operations_pb2
    30 30 
     from buildgrid._protos.google.rpc import status_pb2
    31 31 
     from buildgrid.server.cas.storage import lru_memory_cache
    32 32 
     from buildgrid.server.controller import ExecutionController
    33 
    +from buildgrid.server.job import LeaseState
    33 34 
     from buildgrid.server.operations import service
    34 35 
     from buildgrid.server.operations.service import OperationsService
    35 36 
     from buildgrid.utils import create_digest
    ... ... @@ -131,9 +132,10 @@ def test_list_operations_with_result(instance, controller, execute_request, cont
    131 132 
         action_result.output_files.extend([output_file])
    132 133
    133 134 
         controller.operations_instance._scheduler.jobs[response_execute.name].create_lease()
    134 
    -    controller.operations_instance._scheduler.job_complete(response_execute.name,
    135 
    -                                                           _pack_any(action_result),
    136 
    -                                                           status_pb2.Status())
    135 
    +    controller.operations_instance._scheduler.update_job_lease_state(response_execute.name,
    136 
    +                                                                     LeaseState.COMPLETED,
    137 
    +                                                                     lease_status=status_pb2.Status(),
    138 
    +                                                                     lease_result=_pack_any(action_result))
    137 139
    138 140 
         request = operations_pb2.ListOperationsRequest(name=instance_name)
    139 141 
         response = instance.ListOperations(request, context)

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