start refactor of moving fatcat_client into python_client

1 files changed, 323 insertions, 0 deletions

diff --git a/python_client/fatcat_client/rest.py b/python_client/fatcat_client/rest.py
new file mode 100644
index 00000000..5c322c6b
--- /dev/null
+++ b/python_client/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