<commit_before># Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Copyright(c) 2019 PaddlePaddle Authors.All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0(the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http:  // www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from .executor import global_scope
"""
Communicator is used for async distribute training in distribute_transpiler mode.
It's a wrapper of a cpp class Communicator and should be used inside fleet API.
"""
from . import core
from paddle.fluid.incubate.fleet.parameter_server.mode import DistributedMode

__all__ = ['Communicator', 'LargeScaleKV']


class Communicator(object):
    def __init__(self, mode, kwargs=None, envs=None):
        """
        Communicator is used for async distribute training in distribute_transpiler mode.
        It's a wrapper of a cpp class Communicator and should be used inside fleet API.

        Args:
            program(Program): the trainers program after transpile of distribute_transpiler.
            It's used by communicator to extract the information to do communication.

        Returns:
            None

        Examples:
            .. code-block:: python

                import paddle.fluid as fluid

                prog = fluid.Program()
                comm = fluid.communicator.Communicator(prog)
                comm.start()
                comm.stop()
        """
        # set all recv op to not_run mode

        if kwargs == None:
            if envs == None:
                envs = {}
        else:
            if mode == DistributedMode.SYNC:
                envs["pserver_endpoints"] = ','.join(kwargs[
                    "pserver_endpoints"])

            envs["trainers"] = str(kwargs["trainers"])
            envs["trainer_id"] = str(kwargs["trainer_id"])
            envs["need_global_step"] = str(kwargs["need_global_step"])
            envs["barrier_table_id"] = str(kwargs["barrier_table_id"])

        mode_str = None

        if mode == DistributedMode.SYNC:
            mode_str = "SYNC"
        elif mode == DistributedMode.ASYNC:
            mode_str = "ASYNC"
        elif mode == DistributedMode.HALF_ASYNC:
            mode_str = "HALF_ASYNC"
        elif mode == DistributedMode.GEO:
            mode_str = "GEO"

        self.mode = mode_str
        self.envs = envs
        self.communicator_ = None
        self.send_ctx_ = None
        self.recv_ctx_ = None

    def init_with_ctx(self,
                      send_ctx,
                      recv_ctx,
                      proto_txt,
                      unit64_hosts,
                      scope=global_scope()):
        self.communicator_ = core.DistCommunicator(self.mode, proto_txt,
                                                   unit64_hosts, send_ctx,
                                                   recv_ctx, scope, self.envs)
        self.send_ctx_ = send_ctx
        self.recv_ctx_ = recv_ctx

    def create_client_to_client_connection(self,
                                           pserver_timeout_ms=500000,
                                           pserver_connect_timeout_ms=10000,
                                           max_retry=3):
        self.communicator_.create_client_to_client_connection(
            pserver_timeout_ms, pserver_connect_timeout_ms, max_retry)

    def get_client_info(self):
        return self.communicator_.get_client_info()

    def set_clients(self, host_list):
        self.communicator_.set_clients(host_list)

    def start(self):
        """
        Start communicator. Should call before training process.

        Returns:
            None

        Examples:
            .. code-block:: python

                import paddle.fluid as fluid

                prog = fluid.Program()
                comm = fluid.communicator.Communicator(prog)
                comm.start()
                comm.stop()
        """
        if self.communicator_ == None:
            print('you must call init_with_ctx first to init comm before start')
            return
        self.communicator_.start()

    def stop(self):
        """
        Stop communicator. Should call after training process.

        Returns:
            None

        Examples:
            .. code-block:: python

                import paddle.fluid as fluid

                prog = fluid.Program()
                comm = fluid.communicator.Communicator(prog)
                comm.start()
                comm.stop()
        """
        if self.communicator_ == None:
            print('you must call init_with_ctx first to init comm before stop')
            return
        self.communicator_.stop()

    def is_running(self):
        """
        Get communicator is running or stop.

        Returns:
            bool

        Examples:
            .. code-block:: python

                import paddle.fluid as fluid

                prog = fluid.Program()
                comm = fluid.communicator.Communicator(prog)
                comm.is_running()
        """
        if self.communicator_ == None:
            print('you must call init_with_ctx first to init comm before stop')
            return
        self.communicator_.is_running()

    def recv(self):
        self.communicator_.recv()

    def init_params(self, context):
        self.communicator_.init_params(context)

    def pull_dense(self, context):
        self.communicator_.pull_dense(context)

    def push_sparse_param(self, var_name, table_id=-1, scope=global_scope()):
        if not self.is_running():
            raise ValueError(
                "Communicator should init first. Using fleet.init_worker() before push_sparse_param()"
            )
        assert isinstance(var_name, str)
        assert isinstance(table_id, int)
        if table_id == -1:
            table_id = self.send_ctx_[var_name].table_id()
        self.communicator_.push_sparse_param(var_name, table_id, scope)


class LargeScaleKV(object):<commit_msg>modify communicator api (#40881)<commit_after># Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Copyright(c) 2019 PaddlePaddle Authors.All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0(the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http:  // www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from .executor import global_scope
"""
Communicator is used for async distribute training in distribute_transpiler mode.
It's a wrapper of a cpp class Communicator and should be used inside fleet API.
"""
from . import core
from paddle.fluid.incubate.fleet.parameter_server.mode import DistributedMode

__all__ = ['Communicator', 'LargeScaleKV']


class Communicator(object):
    def __init__(self, mode, kwargs=None, envs=None):
        """
        Communicator is used for async distribute training in distribute_transpiler mode.
        It's a wrapper of a cpp class Communicator and should be used inside fleet API.

        Args:
            program(Program): the trainers program after transpile of distribute_transpiler.
            It's used by communicator to extract the information to do communication.

        Returns:
            None

        Examples:
            .. code-block:: python

                import paddle.fluid as fluid

                prog = fluid.Program()
                comm = fluid.communicator.Communicator(prog)
                comm.start()
                comm.stop()
        """
        # set all recv op to not_run mode

        if kwargs == None:
            if envs == None:
                envs = {}
        else:
            if mode == DistributedMode.SYNC:
                envs["pserver_endpoints"] = ','.join(kwargs[
                    "pserver_endpoints"])

            envs["trainers"] = str(kwargs["trainers"])
            envs["trainer_id"] = str(kwargs["trainer_id"])
            envs["need_global_step"] = str(kwargs["need_global_step"])
            envs["barrier_table_id"] = str(kwargs["barrier_table_id"])

        mode_str = None

        if mode == DistributedMode.SYNC:
            mode_str = "SYNC"
        elif mode == DistributedMode.ASYNC:
            mode_str = "ASYNC"
        elif mode == DistributedMode.HALF_ASYNC:
            mode_str = "HALF_ASYNC"
        elif mode == DistributedMode.GEO:
            mode_str = "GEO"

        self.mode = mode_str
        self.envs = envs
        self.communicator_ = None
        self.send_ctx_ = None
        self.recv_ctx_ = None

    def init_with_ctx(self,
                      send_ctx,
                      recv_ctx,
                      proto_txt,
                      unit64_hosts,
                      scope=None):
        if scope == None:
            scope = global_scope()
        self.communicator_ = core.DistCommunicator(self.mode, proto_txt,
                                                   unit64_hosts, send_ctx,
                                                   recv_ctx, scope, self.envs)
        self.send_ctx_ = send_ctx
        self.recv_ctx_ = recv_ctx

    def create_client_to_client_connection(self,
                                           pserver_timeout_ms=500000,
                                           pserver_connect_timeout_ms=10000,
                                           max_retry=3):
        self.communicator_.create_client_to_client_connection(
            pserver_timeout_ms, pserver_connect_timeout_ms, max_retry)

    def get_client_info(self):
        return self.communicator_.get_client_info()

    def set_clients(self, host_list):
        self.communicator_.set_clients(host_list)

    def start(self):
        """
        Start communicator. Should call before training process.

        Returns:
            None

        Examples:
            .. code-block:: python

                import paddle.fluid as fluid

                prog = fluid.Program()
                comm = fluid.communicator.Communicator(prog)
                comm.start()
                comm.stop()
        """
        if self.communicator_ == None:
            print('you must call init_with_ctx first to init comm before start')
            return
        self.communicator_.start()

    def stop(self):
        """
        Stop communicator. Should call after training process.

        Returns:
            None

        Examples:
            .. code-block:: python

                import paddle.fluid as fluid

                prog = fluid.Program()
                comm = fluid.communicator.Communicator(prog)
                comm.start()
                comm.stop()
        """
        if self.communicator_ == None:
            print('you must call init_with_ctx first to init comm before stop')
            return
        self.communicator_.stop()

    def is_running(self):
        """
        Get communicator is running or stop.

        Returns:
            bool

        Examples:
            .. code-block:: python

                import paddle.fluid as fluid

                prog = fluid.Program()
                comm = fluid.communicator.Communicator(prog)
                comm.is_running()
        """
        if self.communicator_ == None:
            print('you must call init_with_ctx first to init comm before stop')
            return
        self.communicator_.is_running()

    def recv(self):
        self.communicator_.recv()

    def init_params(self, context):
        self.communicator_.init_params(context)

    def pull_dense(self, context):
        self.communicator_.pull_dense(context)

    def push_sparse_param(self, var_name, table_id=-1, scope=None):
        if scope == None:
            scope = global_scope()
        if not self.is_running():
            raise ValueError(
                "Communicator should init first. Using fleet.init_worker() before push_sparse_param()"
            )
        assert isinstance(var_name, str)
        assert isinstance(table_id, int)
        if table_id == -1:
            table_id = self.send_ctx_[var_name].table_id()
        self.communicator_.push_sparse_param(var_name, table_id, scope)


class LargeScaleKV(object):
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