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from __future__ import annotations
import logging
from collections.abc import Iterable
from typing import TypeVar, Generic, Optional, Any
from .configuration import Configuration
from .pipeline import Pipeline
from .pipeline.transport._base import PipelineClientBase
from .pipeline.transport import HttpTransport
from .pipeline.policies import (
ContentDecodePolicy,
DistributedTracingPolicy,
HttpLoggingPolicy,
RequestIdPolicy,
RetryPolicy,
SensitiveHeaderCleanupPolicy,
)
HTTPResponseType = TypeVar("HTTPResponseType")
HTTPRequestType = TypeVar("HTTPRequestType")
_LOGGER = logging.getLogger(__name__)
class PipelineClient(PipelineClientBase, Generic[HTTPRequestType, HTTPResponseType]):
"""Service client core methods.
Builds a Pipeline client.
:param str base_url: URL for the request.
:keyword ~azure.core.configuration.Configuration config: If omitted, the standard configuration is used.
:keyword Pipeline pipeline: If omitted, a Pipeline object is created and returned.
:keyword list[HTTPPolicy] policies: If omitted, the standard policies of the configuration object is used.
:keyword per_call_policies: If specified, the policies will be added into the policy list before RetryPolicy
:paramtype per_call_policies: Union[HTTPPolicy, SansIOHTTPPolicy, list[HTTPPolicy], list[SansIOHTTPPolicy]]
:keyword per_retry_policies: If specified, the policies will be added into the policy list after RetryPolicy
:paramtype per_retry_policies: Union[HTTPPolicy, SansIOHTTPPolicy, list[HTTPPolicy], list[SansIOHTTPPolicy]]
:keyword HttpTransport transport: If omitted, RequestsTransport is used for synchronous transport.
:return: A pipeline object.
:rtype: ~azure.core.pipeline.Pipeline
.. admonition:: Example:
.. literalinclude:: ../samples/test_example_sync.py
:start-after: [START build_pipeline_client]
:end-before: [END build_pipeline_client]
:language: python
:dedent: 4
:caption: Builds the pipeline client.
"""
def __init__(
self,
base_url: str,
*,
pipeline: Optional[Pipeline[HTTPRequestType, HTTPResponseType]] = None,
config: Optional[Configuration[HTTPRequestType, HTTPResponseType]] = None,
**kwargs: Any,
):
super(PipelineClient, self).__init__(base_url)
self._config: Configuration[HTTPRequestType, HTTPResponseType] = config or Configuration(**kwargs)
self._base_url = base_url
self._pipeline = pipeline or self._build_pipeline(self._config, **kwargs)
def __enter__(self) -> PipelineClient[HTTPRequestType, HTTPResponseType]:
self._pipeline.__enter__()
return self
def __exit__(self, *exc_details: Any) -> None:
self._pipeline.__exit__(*exc_details)
def close(self) -> None:
self.__exit__()
def _build_pipeline(
self,
config: Configuration[HTTPRequestType, HTTPResponseType],
*,
transport: Optional[HttpTransport[HTTPRequestType, HTTPResponseType]] = None,
policies=None,
per_call_policies=None,
per_retry_policies=None,
**kwargs,
) -> Pipeline[HTTPRequestType, HTTPResponseType]:
per_call_policies = per_call_policies or []
per_retry_policies = per_retry_policies or []
if policies is None: # [] is a valid policy list
policies = [
config.request_id_policy or RequestIdPolicy(**kwargs),
config.headers_policy,
config.user_agent_policy,
config.proxy_policy,
ContentDecodePolicy(**kwargs),
]
if isinstance(per_call_policies, Iterable):
policies.extend(per_call_policies)
else:
policies.append(per_call_policies)
policies.extend(
[
config.redirect_policy,
config.retry_policy,
config.authentication_policy,
config.custom_hook_policy,
]
)
if isinstance(per_retry_policies, Iterable):
policies.extend(per_retry_policies)
else:
policies.append(per_retry_policies)
policies.extend(
[
config.logging_policy,
DistributedTracingPolicy(**kwargs),
SensitiveHeaderCleanupPolicy(**kwargs) if config.redirect_policy else None,
config.http_logging_policy or HttpLoggingPolicy(**kwargs),
]
)
else:
if isinstance(per_call_policies, Iterable):
per_call_policies_list = list(per_call_policies)
else:
per_call_policies_list = [per_call_policies]
per_call_policies_list.extend(policies)
policies = per_call_policies_list
if isinstance(per_retry_policies, Iterable):
per_retry_policies_list = list(per_retry_policies)
else:
per_retry_policies_list = [per_retry_policies]
if len(per_retry_policies_list) > 0:
index_of_retry = -1
for index, policy in enumerate(policies):
if isinstance(policy, RetryPolicy):
index_of_retry = index
if index_of_retry == -1:
raise ValueError(
"Failed to add per_retry_policies; no RetryPolicy found in the supplied list of policies. "
)
policies_1 = policies[: index_of_retry + 1]
policies_2 = policies[index_of_retry + 1 :]
policies_1.extend(per_retry_policies_list)
policies_1.extend(policies_2)
policies = policies_1
if transport is None:
# Use private import for better typing, mypy and pyright don't like PEP562
from .pipeline.transport._requests_basic import RequestsTransport
transport = RequestsTransport(**kwargs)
return Pipeline(transport, policies)
def send_request(self, request: HTTPRequestType, *, stream: bool = False, **kwargs: Any) -> HTTPResponseType:
"""Method that runs the network request through the client's chained policies.
>>> from azure.core.rest import HttpRequest
>>> request = HttpRequest('GET', 'http://www.example.com')
<HttpRequest [GET], url: 'http://www.example.com'>
>>> response = client.send_request(request)
<HttpResponse: 200 OK>
:param request: The network request you want to make. Required.
:type request: ~azure.core.rest.HttpRequest
:keyword bool stream: Whether the response payload will be streamed. Defaults to False.
:return: The response of your network call. Does not do error handling on your response.
:rtype: ~azure.core.rest.HttpResponse
"""
return_pipeline_response = kwargs.pop("_return_pipeline_response", False)
pipeline_response = self._pipeline.run(request, stream=stream, **kwargs) # pylint: disable=protected-access
if return_pipeline_response:
return pipeline_response # type: ignore # This is a private API we don't want to type in signature
return pipeline_response.http_response