Source code for apache_beam.transforms.environments

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"""Environments concepts.

For internal use only. No backwards compatibility guarantees."""

# pytype: skip-file

from __future__ import absolute_import

import json
import logging
import sys
from typing import TYPE_CHECKING
from typing import Any
from typing import Callable
from typing import Dict
from typing import Iterable
from typing import Optional
from typing import Tuple
from typing import Type
from typing import TypeVar
from typing import Union
from typing import overload

from google.protobuf import message

from apache_beam import coders
from apache_beam.portability import common_urns
from apache_beam.portability import python_urns
from apache_beam.portability.api import beam_runner_api_pb2
from apache_beam.portability.api import endpoints_pb2
from apache_beam.utils import proto_utils

if TYPE_CHECKING:
  from apache_beam.options.pipeline_options import PipelineOptions
  from apache_beam.runners.pipeline_context import PipelineContext

__all__ = [
    'Environment',
    'DockerEnvironment',
    'ProcessEnvironment',
    'ExternalEnvironment',
    'EmbeddedPythonEnvironment',
    'EmbeddedPythonGrpcEnvironment',
    'SubprocessSDKEnvironment',
    'RunnerAPIEnvironmentHolder'
]

T = TypeVar('T')
EnvironmentT = TypeVar('EnvironmentT', bound='Environment')
ConstructorFn = Callable[[Optional[Any], 'PipelineContext'], Any]


def looks_like_json(s):
  import re
  return re.match(r'\s*\{.*\}\s*$', s)


[docs]class Environment(object): """Abstract base class for environments. Represents a type and configuration of environment. Each type of Environment should have a unique urn. For internal use only. No backwards compatibility guarantees. """ _known_urns = {} # type: Dict[str, Tuple[Optional[type], ConstructorFn]] _urn_to_env_cls = {} # type: Dict[str, type] def __init__(self, capabilities): self._capabilities = capabilities
[docs] def to_runner_api_parameter(self, context): # type: (PipelineContext) -> Tuple[str, Optional[Union[message.Message, bytes, str]]] raise NotImplementedError
[docs] def capabilities(self): # type: () -> Iterable[str] return self._capabilities
@classmethod @overload def register_urn( cls, urn, # type: str parameter_type, # type: Type[T] ): # type: (...) -> Callable[[Union[type, Callable[[T, Iterable[str], PipelineContext], Any]]], Callable[[T, Iterable[str], PipelineContext], Any]] pass @classmethod @overload def register_urn( cls, urn, # type: str parameter_type, # type: None ): # type: (...) -> Callable[[Union[type, Callable[[bytes, Iterable[str], PipelineContext], Any]]], Callable[[bytes, Iterable[str], PipelineContext], Any]] pass @classmethod @overload def register_urn(cls, urn, # type: str parameter_type, # type: Type[T] constructor # type: Callable[[T, Iterable[str], PipelineContext], Any] ): # type: (...) -> None pass @classmethod @overload def register_urn(cls, urn, # type: str parameter_type, # type: None constructor # type: Callable[[bytes, Iterable[str], PipelineContext], Any] ): # type: (...) -> None pass
[docs] @classmethod def register_urn(cls, urn, parameter_type, constructor=None): def register(constructor): if isinstance(constructor, type): constructor.from_runner_api_parameter = register( constructor.from_runner_api_parameter) # register environment urn to environment class cls._urn_to_env_cls[urn] = constructor return constructor else: cls._known_urns[urn] = parameter_type, constructor return staticmethod(constructor) if constructor: # Used as a statement. register(constructor) else: # Used as a decorator. return register
[docs] @classmethod def get_env_cls_from_urn(cls, urn): return cls._urn_to_env_cls[urn]
[docs] def to_runner_api(self, context): # type: (PipelineContext) -> beam_runner_api_pb2.Environment urn, typed_param = self.to_runner_api_parameter(context) return beam_runner_api_pb2.Environment( urn=urn, payload=typed_param.SerializeToString() if isinstance( typed_param, message.Message) else typed_param if (isinstance(typed_param, bytes) or typed_param is None) else typed_param.encode('utf-8'), capabilities=self.capabilities())
[docs] @classmethod def from_runner_api(cls, proto, # type: Optional[beam_runner_api_pb2.FunctionSpec] context # type: PipelineContext ): # type: (...) -> Optional[Environment] if proto is None or not proto.urn: return None parameter_type, constructor = cls._known_urns[proto.urn] try: return constructor( proto_utils.parse_Bytes(proto.payload, parameter_type), proto.capabilities, context) except Exception: if context.allow_proto_holders: return RunnerAPIEnvironmentHolder(proto) raise
[docs] @classmethod def from_options(cls, options): # type: (Type[EnvironmentT], PipelineOptions) -> EnvironmentT """Creates an Environment object from PipelineOptions. Args: options: The PipelineOptions object. """ raise NotImplementedError
[docs]@Environment.register_urn( common_urns.environments.DOCKER.urn, beam_runner_api_pb2.DockerPayload) class DockerEnvironment(Environment): def __init__(self, container_image=None, capabilities=()): super(DockerEnvironment, self).__init__(capabilities) if container_image: self.container_image = container_image else: self.container_image = self.default_docker_image() def __eq__(self, other): return self.__class__ == other.__class__ \ and self.container_image == other.container_image def __ne__(self, other): # TODO(BEAM-5949): Needed for Python 2 compatibility. return not self == other def __hash__(self): return hash((self.__class__, self.container_image)) def __repr__(self): return 'DockerEnvironment(container_image=%s)' % self.container_image
[docs] def to_runner_api_parameter(self, context): # type: (PipelineContext) -> Tuple[str, beam_runner_api_pb2.DockerPayload] return ( common_urns.environments.DOCKER.urn, beam_runner_api_pb2.DockerPayload(container_image=self.container_image))
[docs] @staticmethod def from_runner_api_parameter(payload, capabilities, context): return DockerEnvironment( container_image=payload.container_image, capabilities=capabilities)
[docs] @classmethod def from_options(cls, options): # type: (PipelineOptions) -> DockerEnvironment return cls( container_image=options.environment_config, capabilities=python_sdk_capabilities())
[docs] @staticmethod def default_docker_image(): from apache_beam import version as beam_version sdk_version = beam_version.__version__ version_suffix = '.'.join([str(i) for i in sys.version_info[0:2]]) logging.warning( 'Make sure that locally built Python SDK docker image ' 'has Python %d.%d interpreter.' % (sys.version_info[0], sys.version_info[1])) image = ( 'apache/beam_python{version_suffix}_sdk:{tag}'.format( version_suffix=version_suffix, tag=sdk_version)) logging.info( 'Using Python SDK docker image: %s. If the image is not ' 'available at local, we will try to pull from hub.docker.com' % (image)) return image
[docs]@Environment.register_urn( common_urns.environments.PROCESS.urn, beam_runner_api_pb2.ProcessPayload) class ProcessEnvironment(Environment): def __init__(self, command, os='', arch='', env=None, capabilities=()): super(ProcessEnvironment, self).__init__(capabilities) self.command = command self.os = os self.arch = arch self.env = env or {} def __eq__(self, other): return self.__class__ == other.__class__ \ and self.command == other.command and self.os == other.os \ and self.arch == other.arch and self.env == other.env def __ne__(self, other): # TODO(BEAM-5949): Needed for Python 2 compatibility. return not self == other def __hash__(self): return hash(( self.__class__, self.command, self.os, self.arch, frozenset(self.env.items()))) def __repr__(self): repr_parts = ['command=%s' % self.command] if self.os: repr_parts.append('os=%s' % self.os) if self.arch: repr_parts.append('arch=%s' % self.arch) repr_parts.append('env=%s' % self.env) return 'ProcessEnvironment(%s)' % ','.join(repr_parts)
[docs] def to_runner_api_parameter(self, context): # type: (PipelineContext) -> Tuple[str, beam_runner_api_pb2.ProcessPayload] return ( common_urns.environments.PROCESS.urn, beam_runner_api_pb2.ProcessPayload( os=self.os, arch=self.arch, command=self.command, env=self.env))
[docs] @staticmethod def from_runner_api_parameter(payload, capabilities, context): return ProcessEnvironment( command=payload.command, os=payload.os, arch=payload.arch, env=payload.env, capabilities=capabilities)
[docs] @classmethod def from_options(cls, options): config = json.loads(options.environment_config) return cls( config.get('command'), os=config.get('os', ''), arch=config.get('arch', ''), env=config.get('env', ''), capabilities=python_sdk_capabilities())
[docs]@Environment.register_urn( common_urns.environments.EXTERNAL.urn, beam_runner_api_pb2.ExternalPayload) class ExternalEnvironment(Environment): def __init__(self, url, params=None, capabilities=()): super(ExternalEnvironment, self).__init__(capabilities) self.url = url self.params = params def __eq__(self, other): return self.__class__ == other.__class__ and self.url == other.url \ and self.params == other.params def __ne__(self, other): # TODO(BEAM-5949): Needed for Python 2 compatibility. return not self == other def __hash__(self): params = self.params if params is not None: params = frozenset(self.params.items()) return hash((self.__class__, self.url, params)) def __repr__(self): return 'ExternalEnvironment(url=%s,params=%s)' % (self.url, self.params)
[docs] def to_runner_api_parameter(self, context): # type: (PipelineContext) -> Tuple[str, beam_runner_api_pb2.ExternalPayload] return ( common_urns.environments.EXTERNAL.urn, beam_runner_api_pb2.ExternalPayload( endpoint=endpoints_pb2.ApiServiceDescriptor(url=self.url), params=self.params))
[docs] @staticmethod def from_runner_api_parameter(payload, capabilities, context): return ExternalEnvironment( payload.endpoint.url, params=payload.params or None, capabilities=capabilities)
[docs] @classmethod def from_options(cls, options): if looks_like_json(options.environment_config): config = json.loads(options.environment_config) url = config.get('url') if not url: raise ValueError('External environment endpoint must be set.') params = config.get('params') else: url = options.environment_config params = None return cls(url, params=params, capabilities=python_sdk_capabilities())
[docs]@Environment.register_urn(python_urns.EMBEDDED_PYTHON, None) class EmbeddedPythonEnvironment(Environment): def __init__(self, capabilities=None): super(EmbeddedPythonEnvironment, self).__init__(capabilities) def __eq__(self, other): return self.__class__ == other.__class__ def __ne__(self, other): # TODO(BEAM-5949): Needed for Python 2 compatibility. return not self == other def __hash__(self): return hash(self.__class__)
[docs] def to_runner_api_parameter(self, context): # type: (PipelineContext) -> Tuple[str, None] return python_urns.EMBEDDED_PYTHON, None
[docs] @staticmethod def from_runner_api_parameter(unused_payload, capabilities, context): return EmbeddedPythonEnvironment(capabilities)
[docs] @classmethod def from_options(cls, options): return cls(capabilities=python_sdk_capabilities())
[docs]@Environment.register_urn(python_urns.EMBEDDED_PYTHON_GRPC, bytes) class EmbeddedPythonGrpcEnvironment(Environment): def __init__( self, state_cache_size=None, data_buffer_time_limit_ms=None, capabilities=()): super(EmbeddedPythonGrpcEnvironment, self).__init__(capabilities) self.state_cache_size = state_cache_size self.data_buffer_time_limit_ms = data_buffer_time_limit_ms def __eq__(self, other): return self.__class__ == other.__class__ \ and self.state_cache_size == other.state_cache_size \ and self.data_buffer_time_limit_ms == other.data_buffer_time_limit_ms def __ne__(self, other): # TODO(BEAM-5949): Needed for Python 2 compatibility. return not self == other def __hash__(self): return hash( (self.__class__, self.state_cache_size, self.data_buffer_time_limit_ms)) def __repr__(self): repr_parts = [] if not self.state_cache_size is None: repr_parts.append('state_cache_size=%d' % self.state_cache_size) if not self.data_buffer_time_limit_ms is None: repr_parts.append( 'data_buffer_time_limit_ms=%d' % self.data_buffer_time_limit_ms) return 'EmbeddedPythonGrpcEnvironment(%s)' % ','.join(repr_parts)
[docs] def to_runner_api_parameter(self, context): # type: (PipelineContext) -> Tuple[str, bytes] params = {} if self.state_cache_size is not None: params['state_cache_size'] = self.state_cache_size if self.data_buffer_time_limit_ms is not None: params['data_buffer_time_limit_ms'] = self.data_buffer_time_limit_ms payload = json.dumps(params).encode('utf-8') return python_urns.EMBEDDED_PYTHON_GRPC, payload
[docs] @staticmethod def from_runner_api_parameter(payload, capabilities, context): if payload: config = EmbeddedPythonGrpcEnvironment.parse_config( payload.decode('utf-8')) return EmbeddedPythonGrpcEnvironment( state_cache_size=config.get('state_cache_size'), data_buffer_time_limit_ms=config.get('data_buffer_time_limit_ms'), capabilities=capabilities) else: return EmbeddedPythonGrpcEnvironment()
[docs] @classmethod def from_options(cls, options): if options.environment_config: config = EmbeddedPythonGrpcEnvironment.parse_config( options.environment_config) return cls( state_cache_size=config.get('state_cache_size'), data_buffer_time_limit_ms=config.get('data_buffer_time_limit_ms')) else: return cls(capabilities=python_sdk_capabilities())
[docs] @staticmethod def parse_config(s): if looks_like_json(s): config_dict = json.loads(s) if 'state_cache_size' in config_dict: config_dict['state_cache_size'] = int(config_dict['state_cache_size']) if 'data_buffer_time_limit_ms' in config_dict: config_dict['data_buffer_time_limit_ms'] = \ int(config_dict['data_buffer_time_limit_ms']) return config_dict else: return {'state_cache_size': int(s)}
[docs]@Environment.register_urn(python_urns.SUBPROCESS_SDK, bytes) class SubprocessSDKEnvironment(Environment): def __init__(self, command_string, capabilities=()): super(SubprocessSDKEnvironment, self).__init__(capabilities) self.command_string = command_string def __eq__(self, other): return self.__class__ == other.__class__ \ and self.command_string == other.command_string def __ne__(self, other): # TODO(BEAM-5949): Needed for Python 2 compatibility. return not self == other def __hash__(self): return hash((self.__class__, self.command_string)) def __repr__(self): return 'SubprocessSDKEnvironment(command_string=%s)' % self.command_string
[docs] def to_runner_api_parameter(self, context): # type: (PipelineContext) -> Tuple[str, bytes] return python_urns.SUBPROCESS_SDK, self.command_string.encode('utf-8')
[docs] @staticmethod def from_runner_api_parameter(payload, capabilities, context): return SubprocessSDKEnvironment(payload.decode('utf-8'), capabilities)
[docs] @classmethod def from_options(cls, options): return cls( options.environment_config, capabilities=python_sdk_capabilities())
[docs]class RunnerAPIEnvironmentHolder(Environment): def __init__(self, proto): self.proto = proto
[docs] def to_runner_api(self, context): return self.proto
[docs] def capabilities(self): return self.proto.capabilities
def __eq__(self, other): return self.__class__ == other.__class__ and self.proto == other.proto def __ne__(self, other): # TODO(BEAM-5949): Needed for Python 2 compatibility. return not self == other def __hash__(self): return hash((self.__class__, self.proto))
def python_sdk_capabilities(): return list(_python_sdk_capabilities_iter()) def _python_sdk_capabilities_iter(): for urn_spec in common_urns.coders.__dict__.values(): if getattr(urn_spec, 'urn', None) in coders.Coder._known_urns: yield urn_spec.urn yield common_urns.protocols.LEGACY_PROGRESS_REPORTING.urn yield common_urns.protocols.WORKER_STATUS.urn