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# --------------------------------------------------------------------------
#
# Copyright (c) Microsoft Corporation. All rights reserved.
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# The MIT License (MIT)
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# --------------------------------------------------------------------------
import logging
import os
import sys
try:
from urlparse import urljoin, urlparse
except ImportError:
from urllib.parse import urljoin, urlparse
import warnings
from typing import List, Any, Dict, Union, IO, Tuple, Optional, Callable, Iterator, cast, TYPE_CHECKING # pylint: disable=unused-import
from .authentication import Authentication
from .universal_http import ClientRequest, ClientResponse
from .universal_http.requests import (
RequestsHTTPSender,
)
from .pipeline import Request, Pipeline, HTTPPolicy, SansIOHTTPPolicy
from .pipeline.requests import (
PipelineRequestsHTTPSender,
RequestsCredentialsPolicy,
RequestsPatchSession
)
from .pipeline.universal import (
HTTPLogger,
RawDeserializer
)
if TYPE_CHECKING:
from .configuration import Configuration # pylint: disable=unused-import
from .universal_http.requests import RequestsClientResponse # pylint: disable=unused-import
import requests # pylint: disable=unused-import
_LOGGER = logging.getLogger(__name__)
class SDKClient(object):
"""The base class of all generated SDK client.
"""
def __init__(self, creds, config):
# type: (Any, Configuration) -> None
self._client = ServiceClient(creds, config)
def close(self):
# type: () -> None
"""Close the client if keep_alive is True.
"""
self._client.close()
def __enter__(self):
# type: () -> SDKClient
self._client.__enter__()
return self
def __exit__(self, *exc_details):
self._client.__exit__(*exc_details)
class _ServiceClientCore(object):
"""Service client core methods.
This contains methods are sans I/O and not tight to sync or async implementation.
:param Configuration config: Service configuration.
:param Authentication creds: Authenticated credentials.
"""
def __init__(self, config):
# type: (Any, Configuration) -> None
if config is None:
raise ValueError("Config is a required parameter")
self.config = config
def _request(self, method, url, params, headers, content, form_content):
# type: (str, str, Optional[Dict[str, str]], Optional[Dict[str, str]], Any, Optional[Dict[str, Any]]) -> ClientRequest
"""Create ClientRequest object.
:param str url: URL for the request.
:param dict params: URL query parameters.
:param dict headers: Headers
:param dict form_content: Form content
"""
request = ClientRequest(method, self.format_url(url))
if params:
request.format_parameters(params)
if headers:
request.headers.update(headers)
# All requests should contain a Accept.
# This should be done by Autorest, but wasn't in old Autorest
# Force it for now, but might deprecate it later.
if "Accept" not in request.headers:
_LOGGER.debug("Accept header absent and forced to application/json")
request.headers['Accept'] = 'application/json'
if content is not None:
request.add_content(content)
if form_content:
request.add_formdata(form_content)
return request
def stream_upload(self, data, callback):
"""Generator for streaming request body data.
:param data: A file-like object to be streamed.
:param callback: Custom callback for monitoring progress.
"""
while True:
chunk = data.read(self.config.connection.data_block_size)
if not chunk:
break
if callback and callable(callback):
callback(chunk, response=None)
yield chunk
def format_url(self, url, **kwargs):
# type: (str, Any) -> str
"""Format request URL with the client base URL, unless the
supplied URL is already absolute.
:param str url: The request URL to be formatted if necessary.
"""
url = url.format(**kwargs)
parsed = urlparse(url)
if not parsed.scheme or not parsed.netloc:
url = url.lstrip('/')
base = self.config.base_url.format(**kwargs).rstrip('/')
url = urljoin(base + '/', url)
return url
def get(self, url, params=None, headers=None, content=None, form_content=None):
# type: (str, Optional[Dict[str, str]], Optional[Dict[str, str]], Any, Optional[Dict[str, Any]]) -> ClientRequest
"""Create a GET request object.
:param str url: The request URL.
:param dict params: Request URL parameters.
:param dict headers: Headers
:param dict form_content: Form content
"""
request = self._request('GET', url, params, headers, content, form_content)
request.method = 'GET'
return request
def put(self, url, params=None, headers=None, content=None, form_content=None):
# type: (str, Optional[Dict[str, str]], Optional[Dict[str, str]], Any, Optional[Dict[str, Any]]) -> ClientRequest
"""Create a PUT request object.
:param str url: The request URL.
:param dict params: Request URL parameters.
:param dict headers: Headers
:param dict form_content: Form content
"""
request = self._request('PUT', url, params, headers, content, form_content)
return request
def post(self, url, params=None, headers=None, content=None, form_content=None):
# type: (str, Optional[Dict[str, str]], Optional[Dict[str, str]], Any, Optional[Dict[str, Any]]) -> ClientRequest
"""Create a POST request object.
:param str url: The request URL.
:param dict params: Request URL parameters.
:param dict headers: Headers
:param dict form_content: Form content
"""
request = self._request('POST', url, params, headers, content, form_content)
return request
def head(self, url, params=None, headers=None, content=None, form_content=None):
# type: (str, Optional[Dict[str, str]], Optional[Dict[str, str]], Any, Optional[Dict[str, Any]]) -> ClientRequest
"""Create a HEAD request object.
:param str url: The request URL.
:param dict params: Request URL parameters.
:param dict headers: Headers
:param dict form_content: Form content
"""
request = self._request('HEAD', url, params, headers, content, form_content)
return request
def patch(self, url, params=None, headers=None, content=None, form_content=None):
# type: (str, Optional[Dict[str, str]], Optional[Dict[str, str]], Any, Optional[Dict[str, Any]]) -> ClientRequest
"""Create a PATCH request object.
:param str url: The request URL.
:param dict params: Request URL parameters.
:param dict headers: Headers
:param dict form_content: Form content
"""
request = self._request('PATCH', url, params, headers, content, form_content)
return request
def delete(self, url, params=None, headers=None, content=None, form_content=None):
# type: (str, Optional[Dict[str, str]], Optional[Dict[str, str]], Any, Optional[Dict[str, Any]]) -> ClientRequest
"""Create a DELETE request object.
:param str url: The request URL.
:param dict params: Request URL parameters.
:param dict headers: Headers
:param dict form_content: Form content
"""
request = self._request('DELETE', url, params, headers, content, form_content)
return request
def merge(self, url, params=None, headers=None, content=None, form_content=None):
# type: (str, Optional[Dict[str, str]], Optional[Dict[str, str]], Any, Optional[Dict[str, Any]]) -> ClientRequest
"""Create a MERGE request object.
:param str url: The request URL.
:param dict params: Request URL parameters.
:param dict headers: Headers
:param dict form_content: Form content
"""
request = self._request('MERGE', url, params, headers, content, form_content)
return request
class ServiceClient(_ServiceClientCore):
"""REST Service Client.
Maintains client pipeline and handles all requests and responses.
:param creds: Deprecated, will be removed in next major version. Creds are now read from config.credentials.
:param Configuration config: Service configuration.
"""
def __init__(self, creds, config):
# type: (Any, Configuration) -> None
super(ServiceClient, self).__init__(config)
# If not Autorest, check if credentials comes from here and not config
if creds and config.credentials is None:
warnings.warn("Creds parameter is deprecated. Set config.credentials instead.",
DeprecationWarning)
config.credentials = creds
self.config.pipeline = self._create_default_pipeline()
def _create_default_pipeline(self):
# type: () -> Pipeline[ClientRequest, RequestsClientResponse]
creds = self.config.credentials
policies = [
self.config.user_agent_policy, # UserAgent policy
RequestsPatchSession(), # Support deprecated operation config at the session level
self.config.http_logger_policy # HTTP request/response log
] # type: List[Union[HTTPPolicy, SansIOHTTPPolicy]]
if creds:
if isinstance(creds, (HTTPPolicy, SansIOHTTPPolicy)):
policies.insert(1, creds)
else:
# Assume this is the old credentials class, and then requests. Wrap it.
policies.insert(1, RequestsCredentialsPolicy(creds)) # Set credentials for requests based session
return Pipeline(
policies,
PipelineRequestsHTTPSender(RequestsHTTPSender(self.config)) # Send HTTP request using requests
)
def __enter__(self):
# type: () -> ServiceClient
self.config.keep_alive = True
self.config.pipeline.__enter__()
return self
def __exit__(self, *exc_details):
self.config.pipeline.__exit__(*exc_details)
self.config.keep_alive = False
def close(self):
# type: () -> None
"""Close the pipeline if keep_alive is True.
"""
self.config.pipeline.__exit__() # type: ignore
def send_formdata(self, request, headers=None, content=None, **config):
"""Send data as a multipart form-data request.
We only deal with file-like objects or strings at this point.
The requests is not yet streamed.
This method is deprecated, and shouldn't be used anymore.
:param ClientRequest request: The request object to be sent.
:param dict headers: Any headers to add to the request.
:param dict content: Dictionary of the fields of the formdata.
:param config: Any specific config overrides.
"""
request.headers = headers
request.add_formdata(content)
return self.send(request, **config)
def send(self, request, headers=None, content=None, **kwargs):
"""Prepare and send request object according to configuration.
:param ClientRequest request: The request object to be sent.
:param dict headers: Any headers to add to the request.
:param content: Any body data to add to the request.
:param config: Any specific config overrides
"""
# "content" and "headers" are deprecated, only old SDK
if headers:
request.headers.update(headers)
if not request.files and request.data is None and content is not None:
request.add_content(content)
# End of deprecation
response = None
kwargs.setdefault('stream', True)
try:
pipeline_response = self.config.pipeline.run(request, **kwargs)
# There is too much thing that expects this method to return a "requests.Response"
# to break it in a compatible release.
# Also, to be pragmatic in the "sync" world "requests" rules anyway.
# However, attach the Universal HTTP response
# to get the streaming generator.
response = pipeline_response.http_response.internal_response
response._universal_http_response = pipeline_response.http_response
response.context = pipeline_response.context
return response
finally:
self._close_local_session_if_necessary(response, kwargs['stream'])
def _close_local_session_if_necessary(self, response, stream):
# Here, it's a local session, I might close it.
if not self.config.keep_alive and (not response or not stream):
self.config.pipeline._sender.driver.session.close()
def stream_download(self, data, callback):
# type: (Union[requests.Response, ClientResponse], Callable) -> Iterator[bytes]
"""Generator for streaming request body data.
:param data: A response object to be streamed.
:param callback: Custom callback for monitoring progress.
"""
block = self.config.connection.data_block_size
try:
# Assume this is ClientResponse, which it should be if backward compat was not important
return cast(ClientResponse, data).stream_download(block, callback)
except AttributeError:
try:
# Assume this is the patched requests.Response from "send"
return data._universal_http_response.stream_download(block, callback) # type: ignore
except AttributeError:
# Assume this is a raw requests.Response
from .universal_http.requests import RequestsClientResponse
response = RequestsClientResponse(None, data)
return response.stream_download(block, callback)
def add_header(self, header, value):
# type: (str, str) -> None
"""Add a persistent header - this header will be applied to all
requests sent during the current client session.
.. deprecated:: 0.5.0
Use config.headers instead
:param str header: The header name.
:param str value: The header value.
"""
warnings.warn("Private attribute _client.add_header is deprecated. Use config.headers instead.",
DeprecationWarning)
self.config.headers[header] = value