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Diffstat (limited to 'python/fatcat_client/rest.py')
| -rw-r--r-- | python/fatcat_client/rest.py | 323 |
1 files changed, 323 insertions, 0 deletions
diff --git a/python/fatcat_client/rest.py b/python/fatcat_client/rest.py new file mode 100644 index 00000000..5c322c6b --- /dev/null +++ b/python/fatcat_client/rest.py @@ -0,0 +1,323 @@ +# coding: utf-8 + +""" + fatcat + + A scalable, versioned, API-oriented catalog of bibliographic entities and file metadata # noqa: E501 + + OpenAPI spec version: 0.1.0 + + Generated by: https://github.com/swagger-api/swagger-codegen.git +""" + + +from __future__ import absolute_import + +import io +import json +import logging +import re +import ssl + +import certifi +# python 2 and python 3 compatibility library +import six +from six.moves.urllib.parse import urlencode + +try: + import urllib3 +except ImportError: + raise ImportError('Swagger python client requires urllib3.') + + +logger = logging.getLogger(__name__) + + +class RESTResponse(io.IOBase): + + def __init__(self, resp): + self.urllib3_response = resp + self.status = resp.status + self.reason = resp.reason + self.data = resp.data + + def getheaders(self): + """Returns a dictionary of the response headers.""" + return self.urllib3_response.getheaders() + + def getheader(self, name, default=None): + """Returns a given response header.""" + return self.urllib3_response.getheader(name, default) + + +class RESTClientObject(object): + + def __init__(self, configuration, pools_size=4, maxsize=None): + # urllib3.PoolManager will pass all kw parameters to connectionpool + # https://github.com/shazow/urllib3/blob/f9409436f83aeb79fbaf090181cd81b784f1b8ce/urllib3/poolmanager.py#L75 # noqa: E501 + # https://github.com/shazow/urllib3/blob/f9409436f83aeb79fbaf090181cd81b784f1b8ce/urllib3/connectionpool.py#L680 # noqa: E501 + # maxsize is the number of requests to host that are allowed in parallel # noqa: E501 + # Custom SSL certificates and client certificates: http://urllib3.readthedocs.io/en/latest/advanced-usage.html # noqa: E501 + + # cert_reqs + if configuration.verify_ssl: + cert_reqs = ssl.CERT_REQUIRED + else: + cert_reqs = ssl.CERT_NONE + + # ca_certs + if configuration.ssl_ca_cert: + ca_certs = configuration.ssl_ca_cert + else: + # if not set certificate file, use Mozilla's root certificates. + ca_certs = certifi.where() + + addition_pool_args = {} + if configuration.assert_hostname is not None: + addition_pool_args['assert_hostname'] = configuration.assert_hostname # noqa: E501 + + if maxsize is None: + if configuration.connection_pool_maxsize is not None: + maxsize = configuration.connection_pool_maxsize + else: + maxsize = 4 + + # https pool manager + if configuration.proxy: + self.pool_manager = urllib3.ProxyManager( + num_pools=pools_size, + maxsize=maxsize, + cert_reqs=cert_reqs, + ca_certs=ca_certs, + cert_file=configuration.cert_file, + key_file=configuration.key_file, + proxy_url=configuration.proxy, + **addition_pool_args + ) + else: + self.pool_manager = urllib3.PoolManager( + num_pools=pools_size, + maxsize=maxsize, + cert_reqs=cert_reqs, + ca_certs=ca_certs, + cert_file=configuration.cert_file, + key_file=configuration.key_file, + **addition_pool_args + ) + + def request(self, method, url, query_params=None, headers=None, + body=None, post_params=None, _preload_content=True, + _request_timeout=None): + """Perform requests. + + :param method: http request method + :param url: http request url + :param query_params: query parameters in the url + :param headers: http request headers + :param body: request json body, for `application/json` + :param post_params: request post parameters, + `application/x-www-form-urlencoded` + and `multipart/form-data` + :param _preload_content: if False, the urllib3.HTTPResponse object will + be returned without reading/decoding response + data. Default is True. + :param _request_timeout: timeout setting for this request. If one + number provided, it will be total request + timeout. It can also be a pair (tuple) of + (connection, read) timeouts. + """ + method = method.upper() + assert method in ['GET', 'HEAD', 'DELETE', 'POST', 'PUT', + 'PATCH', 'OPTIONS'] + + if post_params and body: + raise ValueError( + "body parameter cannot be used with post_params parameter." + ) + + post_params = post_params or {} + headers = headers or {} + + timeout = None + if _request_timeout: + if isinstance(_request_timeout, (int, ) if six.PY3 else (int, long)): # noqa: E501,F821 + timeout = urllib3.Timeout(total=_request_timeout) + elif (isinstance(_request_timeout, tuple) and + len(_request_timeout) == 2): + timeout = urllib3.Timeout( + connect=_request_timeout[0], read=_request_timeout[1]) + + if 'Content-Type' not in headers: + headers['Content-Type'] = 'application/json' + + try: + # For `POST`, `PUT`, `PATCH`, `OPTIONS`, `DELETE` + if method in ['POST', 'PUT', 'PATCH', 'OPTIONS', 'DELETE']: + if query_params: + url += '?' + urlencode(query_params) + if re.search('json', headers['Content-Type'], re.IGNORECASE): + request_body = None + if body is not None: + request_body = json.dumps(body) + r = self.pool_manager.request( + method, url, + body=request_body, + preload_content=_preload_content, + timeout=timeout, + headers=headers) + elif headers['Content-Type'] == 'application/x-www-form-urlencoded': # noqa: E501 + r = self.pool_manager.request( + method, url, + fields=post_params, + encode_multipart=False, + preload_content=_preload_content, + timeout=timeout, + headers=headers) + elif headers['Content-Type'] == 'multipart/form-data': + # must del headers['Content-Type'], or the correct + # Content-Type which generated by urllib3 will be + # overwritten. + del headers['Content-Type'] + r = self.pool_manager.request( + method, url, + fields=post_params, + encode_multipart=True, + preload_content=_preload_content, + timeout=timeout, + headers=headers) + # Pass a `string` parameter directly in the body to support + # other content types than Json when `body` argument is + # provided in serialized form + elif isinstance(body, str): + request_body = body + r = self.pool_manager.request( + method, url, + body=request_body, + preload_content=_preload_content, + timeout=timeout, + headers=headers) + else: + # Cannot generate the request from given parameters + msg = """Cannot prepare a request message for provided + arguments. Please check that your arguments match + declared content type.""" + raise ApiException(status=0, reason=msg) + # For `GET`, `HEAD` + else: + r = self.pool_manager.request(method, url, + fields=query_params, + preload_content=_preload_content, + timeout=timeout, + headers=headers) + except urllib3.exceptions.SSLError as e: + msg = "{0}\n{1}".format(type(e).__name__, str(e)) + raise ApiException(status=0, reason=msg) + + if _preload_content: + r = RESTResponse(r) + + # In the python 3, the response.data is bytes. + # we need to decode it to string. + if six.PY3: + r.data = r.data.decode('utf8') + + # log response body + logger.debug("response body: %s", r.data) + + if not 200 <= r.status <= 299: + raise ApiException(http_resp=r) + + return r + + def GET(self, url, headers=None, query_params=None, _preload_content=True, + _request_timeout=None): + return self.request("GET", url, + headers=headers, + _preload_content=_preload_content, + _request_timeout=_request_timeout, + query_params=query_params) + + def HEAD(self, url, headers=None, query_params=None, _preload_content=True, + _request_timeout=None): + return self.request("HEAD", url, + headers=headers, + _preload_content=_preload_content, + _request_timeout=_request_timeout, + query_params=query_params) + + def OPTIONS(self, url, headers=None, query_params=None, post_params=None, + body=None, _preload_content=True, _request_timeout=None): + return self.request("OPTIONS", url, + headers=headers, + query_params=query_params, + post_params=post_params, + _preload_content=_preload_content, + _request_timeout=_request_timeout, + body=body) + + def DELETE(self, url, headers=None, query_params=None, body=None, + _preload_content=True, _request_timeout=None): + return self.request("DELETE", url, + headers=headers, + query_params=query_params, + _preload_content=_preload_content, + _request_timeout=_request_timeout, + body=body) + + def POST(self, url, headers=None, query_params=None, post_params=None, + body=None, _preload_content=True, _request_timeout=None): + return self.request("POST", url, + headers=headers, + query_params=query_params, + post_params=post_params, + _preload_content=_preload_content, + _request_timeout=_request_timeout, + body=body) + + def PUT(self, url, headers=None, query_params=None, post_params=None, + body=None, _preload_content=True, _request_timeout=None): + return self.request("PUT", url, + headers=headers, + query_params=query_params, + post_params=post_params, + _preload_content=_preload_content, + _request_timeout=_request_timeout, + body=body) + + def PATCH(self, url, headers=None, query_params=None, post_params=None, + body=None, _preload_content=True, _request_timeout=None): + return self.request("PATCH", url, + headers=headers, + query_params=query_params, + post_params=post_params, + _preload_content=_preload_content, + _request_timeout=_request_timeout, + body=body) + + +class ApiException(Exception): + + def __init__(self, status=None, reason=None, http_resp=None): + if http_resp: + self.status = http_resp.status + self.reason = http_resp.reason + self.body = http_resp.data + self.headers = http_resp.getheaders() + else: + self.status = status + self.reason = reason + self.body = None + self.headers = None + + def __str__(self): + """Custom error messages for exception""" + error_message = "({0})\n"\ + "Reason: {1}\n".format(self.status, self.reason) + if self.headers: + error_message += "HTTP response headers: {0}\n".format( + self.headers) + + if self.body: + error_message += "HTTP response body: {0}\n".format(self.body) + + return error_message |