Add Error Reporting Client

docs/error-reporting-client.rst

@@ -0,0 +1,7 @@
+Error Reporting Client
+=======================
+
+.. automodule:: gcloud.error_reporting.client
+  :members:
+  :show-inheritance:
+

docs/error-reporting-usage.rst

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+Using the API
+=============
+
+
+Authentication and Configuration
+--------------------------------
+
+- For an overview of authentication in ``gcloud-python``,
+  see :doc:`gcloud-auth`.
+
+- In addition to any authentication configuration, you should also set the
+  :envvar:`GCLOUD_PROJECT` environment variable for the project you'd like
+  to interact with. If you are Google App Engine or Google Compute Engine
+  this will be detected automatically.
+
+- After configuring your environment, create a
+  :class:`Client <gcloud.error_reporting.client.Client>`
+
+  .. doctest::
+
+     >>> from gcloud import error_reporting
+     >>> client = error_reporting.Client()
+
+  or pass in ``credentials`` and ``project`` explicitly
+
+  .. doctest::
+
+     >>> from gcloud import error_reporting
+     >>> client = error_reporting.Client(project='my-project', credentials=creds)
+
+  Error Reporting associates errors with a service, which is an identifier for an executable,
+  App Engine service, or job. The default service is "python", but a default can be specified
+  for the client on construction time. You can also optionally specify a version for that service,
+  which defaults to "default."
+
+
+    .. doctest::
+
+       >>> from gcloud import error_reporting
+       >>> client = error_reporting.Client(project='my-project',
+       ...                                 service="login_service",
+       ...                                 version="0.1.0")
+
+Reporting an exception
+-----------------------
+
+Report a stacktrace to Stackdriver Error Reporting after an exception
+
+.. doctest::
+
+   >>> from gcloud import error_reporting
+   >>> client = error_reporting.Client()
+   >>> try:
+   >>>     raise NameError
+   >>> except Exception:
+   >>>     client.report_exception()
+
+
+By default, the client will report the error using the service specified in the client's
+constructor, or the default service of "python".
+
+The user and HTTP context can also be included in the exception. The HTTP context
+can be constructed using :class:`gcloud.error_reporting.HTTPContext`. This will
+be used by Stackdriver Error Reporting to help group exceptions.
+
+.. doctest::
+
+   >>> from gcloud import error_reporting
+   >>> client = error_reporting.Client()
+   >>> user = 'example@gmail.com'
+   >>> http_context = HTTPContext(method='GET', url='/', userAgent='test agent',
+   ...                            referrer='example.com', responseStatusCode=500,
+   ...                            remote_ip='1.2.3.4')
+   >>> try:
+   >>>     raise NameError
+   >>> except Exception:
+   >>>     client.report_exception(http_context=http_context, user=user))
+
+Reporting an error without an exception
+-----------------------------------------
+
+Errors can also be reported to Stackdriver Error Reporting outside the context of an exception.
+The library will include the file path, function name, and line number of the location where the
+error was reported.
+
+.. doctest::
+
+   >>> from gcloud import error_reporting
+   >>> client = error_reporting.Client()
+   >>> error_reporting.report("Found an error!")
+
+Similarly to reporting an exception, the user and HTTP context can be provided:
+
+.. doctest::
+
+   >>> from gcloud import error_reporting
+   >>> client = error_reporting.Client()
+   >>> user = 'example@gmail.com'
+   >>> http_context = HTTPContext(method='GET', url='/', userAgent='test agent',
+   ...                            referrer='example.com', responseStatusCode=500,
+   ...                            remote_ip='1.2.3.4')
+   >>> error_reporting.report("Found an error!", http_context=http_context, user=user))

docs/index.rst

@@ -111,6 +111,14 @@
   logging-metric
   logging-sink
 
+.. toctree::
+  :maxdepth: 0
+  :hidden:
+  :caption: Stackdriver Error Reporting
+
+  error-reporting-usage
+  Client <error-reporting-client>
+
 .. toctree::
   :maxdepth: 0
   :hidden:

gcloud/error_reporting/__init__.py

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+# Copyright 2016 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Client library for Stackdriver Error Reporting"""
+
+from gcloud.error_reporting.client import Client

gcloud/error_reporting/client.py

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+# Copyright 2016 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Client for interacting with the Stackdriver Logging API"""
+
+import traceback
+
+import gcloud.logging.client
+import six
+
+
+class HTTPContext(object):
+    """HTTPContext defines an object that captures the parameter for the
+    httpRequest part of Error Reporting API
+
+    :type method: string
+    :param method: The type of HTTP request, such as GET, POST, etc.
+
+    :type url: string
+    :param url: The URL of the request
+
+    :type user_agent: string
+    :param user_agent: The user agent information that is provided with the
+                       request.
+
+    :type referrer: string
+    :param referrer: The referrer information that is provided with the
+                     request.
+
+    :type response_status_code: int
+    :param response_status_code: The HTTP response status code for the request.
+
+    :type remote_ip: string
+    :param remote_ip: The IP address from which the request originated. This
+                      can be IPv4, IPv6, or a token which is derived from
+                      the IP address, depending on the data that has been
+                      provided in the error report.
+    """
+
+    def __init__(self, method=None, url=None,
+                 user_agent=None, referrer=None,
+                 response_status_code=None, remote_ip=None):
+        self.method = method
+        self.url = url
+        # intentionally camel case for mapping to JSON API expects
+        # pylint: disable=invalid-name
+        self.userAgent = user_agent
+        self.referrer = referrer
+        self.responseStatusCode = response_status_code
+        self.remoteIp = remote_ip
+
+
+class Client(object):
+    """Error Reporting client. Currently Error Reporting is done by creating
+    a Logging client.
+
+    :type project: string
+    :param project: the project which the client acts on behalf of. If not
+                    passed falls back to the default inferred from the
+                    environment.
+
+    :type credentials: :class:`oauth2client.client.OAuth2Credentials` or
+                       :class:`NoneType`
+    :param credentials: The OAuth2 Credentials to use for the connection
+                        owned by this client. If not passed (and if no ``http``
+                        object is passed), falls back to the default inferred
+                        from the environment.
+
+    :type http: :class:`httplib2.Http` or class that defines ``request()``.
+    :param http: An optional HTTP object to make requests. If not passed, an
+                 ``http`` object is created that is bound to the
+                 ``credentials`` for the current object.
+
+    :type service: str
+    :param service: An identifier of the service, such as the name of the
+                    executable, job, or Google App Engine service name. This
+                    field is expected to have a low number of values that are
+                    relatively stable over time, as opposed to version,
+                    which can be changed whenever new code is deployed.
+
+
+    :type version: str
+    :param version: Represents the source code version that the developer
+                    provided, which could represent a version label or a Git
+                    SHA-1 hash, for example. If the developer did not provide
+                    a version, the value is set to default.
+
+    :raises: :class:`ValueError` if the project is neither passed in nor
+             set in the environment.
+    """
+
+    def __init__(self, project=None,
+                 credentials=None,
+                 http=None,
+                 service=None,
+                 version=None):
+        self.logging_client = gcloud.logging.client.Client(
+            project, credentials, http)
+        self.service = service if service else self.DEFAULT_SERVICE
+        self.version = version
+
+    DEFAULT_SERVICE = 'python'
+
+    def _send_error_report(self, message,
+                           report_location=None, http_context=None, user=None):
+        """Makes the call to the Error Reporting API via the log stream.
+
+        This is the lower-level interface to build the payload, generally
+        users will use either report() or report_exception() to automatically
+        gather the parameters for this method.
+
+        Currently this method sends the Error Report by formatting a structured
+        log message according to
+
+        https://cloud.google.com/error-reporting/docs/formatting-error-messages
+
+        :type message: string
+        :param message: The stack trace that was reported or logged by the
+                   service.
+
+        :type report_location: dict
+        :param report_location:  The location in the source code where the
+               decision was made to report the error, usually the place
+               where it was logged. For a logged exception this would be the
+               source line where the exception is logged, usually close to
+               the place where it was caught.
+
+               This should be a Python dict that contains the keys 'filePath',
+               'lineNumber', and 'functionName'
+
+        :type http_context: :class`gcloud.error_reporting.HTTPContext`
+        :param http_context: The HTTP request which was processed when the
+                             error was triggered.
+
+        :type user: string
+        :param user: The user who caused or was affected by the crash. This can
+                     be a user ID, an email address, or an arbitrary token that
+                     uniquely identifies the user. When sending an error
+                     report, leave this field empty if the user was not
+                     logged in. In this  case the Error Reporting system will
+                     use other data, such as remote IP address,
+                     to distinguish affected users.
+        """
+        payload = {
+            'serviceContext': {
+                'service': self.service,
+            },
+            'message': '{0}'.format(message)
+        }
+
+        if self.version:
+            payload['serviceContext']['version'] = self.version
+
+        if report_location or http_context or user:
+            payload['context'] = {}
+
+        if report_location:
+            payload['context']['reportLocation'] = report_location
+
+        if http_context:
+            http_context_dict = http_context.__dict__
+            # strip out None values
+            # once py26 support is dropped this can use dict comprehension
+            payload['context']['httpContext'] = dict(
+                (k, v) for (k, v) in six.iteritems(http_context_dict)
+                if v is not None
+            )
+
+        if user:
+            payload['context']['user'] = user
+
+        logger = self.logging_client.logger('errors')
+        logger.log_struct(payload)
+
+    def report(self, message, http_context=None, user=None):
+        """ Reports a message to Stackdriver Error Reporting
+        https://cloud.google.com/error-reporting/docs/formatting-error-messages
+
+           :type message: str
+           :param message: A user-supplied message to report
+
+
+          :type http_context: :class`gcloud.error_reporting.HTTPContext`
+          :param http_context: The HTTP request which was processed when the
+                               error was triggered.
+
+          :type user: string
+          :param user: The user who caused or was affected by the crash. This
+                       can be a user ID, an email address, or an arbitrary
+                       token that uniquely identifies the user. When sending
+                       an error report, leave this field empty if the user
+                       was not logged in. In this case the Error Reporting
+                       system will use other data, such as remote IP address,
+                       to distinguish affected users.
+
+           Example::
+                >>>  client.report("Something went wrong!")
+        """
+        stack = traceback.extract_stack()
+        last_call = stack[-2]
+        file_path = last_call[0]
+        line_number = last_call[1]
+        function_name = last_call[2]
+        report_location = {
+            'filePath': file_path,
+            'lineNumber': line_number,
+            'functionName': function_name
+        }
+
+        self._send_error_report(message,
+                                http_context=http_context,
+                                user=user,
+                                report_location=report_location)
+
+    def report_exception(self, http_context=None, user=None):
+        """ Reports the details of the latest exceptions to Stackdriver Error
+            Reporting.
+
+          :type http_context: :class`gcloud.error_reporting.HTTPContext`
+          :param http_context: The HTTP request which was processed when the
+                               error was triggered.
+
+          :type user: string
+          :param user: The user who caused or was affected by the crash. This
+                       can be a user ID, an email address, or an arbitrary
+                       token that uniquely identifies the user. When sending an
+                       error report, leave this field empty if the user was
+                       not logged in. In this case the Error Reporting system
+                       will use other data, such as remote IP address,
+                       to distinguish affected users.
+
+           Example::
+
+                >>>     try:
+                >>>         raise NameError
+                >>>     except Exception:
+                >>>         client.report_exception()
+        """
+        self._send_error_report(traceback.format_exc(),
+                                http_context=http_context,
+                                user=user)