mirror of
https://github.com/sprockets/sprockets-postgres.git
synced 2024-11-25 03:00:19 +00:00
Gavin M. Roy
GitHub
commit
9056d9b8b1
28 changed files with 1638 additions and 23 deletions
21
.editorconfig
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21
.editorconfig
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|
|
@ -0,0 +1,21 @@
|
|||
# top-most EditorConfig file
|
||||
root = true
|
||||
|
||||
# Unix-style newlines with a newline ending every file
|
||||
[*]
|
||||
end_of_line = lf
|
||||
insert_final_newline = true
|
||||
|
||||
# 4 space indentation
|
||||
[*.py]
|
||||
indent_style = space
|
||||
indent_size = 4
|
||||
|
||||
# 2 space indentation
|
||||
[*.yml]
|
||||
indent_style = space
|
||||
indent_size = 2
|
||||
|
||||
[bootstrap]
|
||||
indent_style = space
|
||||
indent_size = 2
|
||||
20
.github/workflows/deploy.yaml
vendored
Normal file
20
.github/workflows/deploy.yaml
vendored
Normal file
|
|
@ -0,0 +1,20 @@
|
|||
name: Deployment
|
||||
on:
|
||||
push:
|
||||
branches-ignore: ["*"]
|
||||
tags: ["*"]
|
||||
jobs:
|
||||
deploy:
|
||||
runs-on: ubuntu-latest
|
||||
if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags') && github.repository == 'sprockets/sprockets-postgres'
|
||||
container: python:3.8-alpine
|
||||
steps:
|
||||
- name: Checkout repository
|
||||
uses: actions/checkout@v1
|
||||
- name: Build package
|
||||
run: python3 setup.py sdist
|
||||
- name: Publish package
|
||||
uses: pypa/gh-action-pypi-publish@master
|
||||
with:
|
||||
user: __token__
|
||||
password: ${{ secrets.PYPI_PASSWORD }}
|
||||
69
.github/workflows/testing.yaml
vendored
Normal file
69
.github/workflows/testing.yaml
vendored
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|
|
@ -0,0 +1,69 @@
|
|||
name: Testing
|
||||
on:
|
||||
push:
|
||||
branches: ["*"]
|
||||
paths-ignore:
|
||||
- 'docs/**'
|
||||
- 'setup.*'
|
||||
- '*.md'
|
||||
- '*.rst'
|
||||
tags-ignore: ["*"]
|
||||
jobs:
|
||||
test:
|
||||
runs-on: ubuntu-latest
|
||||
timeout-minutes: 3
|
||||
services:
|
||||
postgres:
|
||||
image: postgres:12-alpine
|
||||
options: >-
|
||||
--health-cmd "pg_isready"
|
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--health-interval 10s
|
||||
--health-timeout 10s
|
||||
--health-retries 5
|
||||
ports:
|
||||
- 5432
|
||||
env:
|
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POSTGRES_HOST_AUTH_METHOD: trust
|
||||
strategy:
|
||||
matrix:
|
||||
python: [3.7, 3.8]
|
||||
container:
|
||||
image: python:${{ matrix.python }}-alpine
|
||||
steps:
|
||||
- name: Checkout repository
|
||||
uses: actions/checkout@v1
|
||||
|
||||
- name: Install OS dependencies
|
||||
run: apk --update add gcc make musl-dev linux-headers postgresql-dev
|
||||
|
||||
- name: Install testing dependencies
|
||||
run: pip3 --no-cache-dir install -e '.[testing]'
|
||||
|
||||
- name: Create build directory
|
||||
run: mkdir build
|
||||
|
||||
- name: Create build/test-environment
|
||||
run: echo "export POSTGRES_URL=postgresql://postgres@postgres:5432/postgres" > build/test-environment
|
||||
|
||||
- name: Install UUID extension
|
||||
run: |
|
||||
apk add postgresql-client \
|
||||
&& psql -q -h postgres -U postgres -d postgres -f fixtures/testing.sql
|
||||
|
||||
- name: Run flake8 tests
|
||||
run: flake8
|
||||
|
||||
- name: Run tests
|
||||
run: coverage run
|
||||
|
||||
- name: Output coverage
|
||||
run: coverage report && coverage xml
|
||||
|
||||
- name: Upload Coverage
|
||||
uses: codecov/codecov-action@v1.0.2
|
||||
if: github.event_name == 'push' && github.repository == 'sprockets/sprockets-postgres'
|
||||
with:
|
||||
token: ${{secrets.CODECOV_TOKEN}}
|
||||
file: build/coverage.xml
|
||||
flags: unittests
|
||||
fail_ci_if_error: true
|
||||
23
CONTRIBUTING.md
Normal file
23
CONTRIBUTING.md
Normal file
|
|
@ -0,0 +1,23 @@
|
|||
# Contributing
|
||||
|
||||
To get setup in the environment and run the tests, take the following steps:
|
||||
|
||||
```bash
|
||||
python3 -m venv env
|
||||
source env/bin/activate
|
||||
pip install -e '.[testing]'
|
||||
|
||||
bootstrap
|
||||
|
||||
flake8
|
||||
coverage run && coverage report
|
||||
```
|
||||
|
||||
## Test Coverage
|
||||
|
||||
Pull requests that make changes or additions that are not covered by tests
|
||||
will likely be closed without review.
|
||||
|
||||
In addition, all tests must pass the tests **AND** flake8 linter. If flake8
|
||||
exceptions are included, the reasoning for adding the exception must be included
|
||||
in the pull request.
|
||||
40
LICENSE
40
LICENSE
|
|
@ -1,29 +1,25 @@
|
|||
BSD 3-Clause License
|
||||
|
||||
Copyright (c) 2020, Sprockets
|
||||
Copyright (c) 2020 AWeber Communications
|
||||
All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are met:
|
||||
Redistribution and use in source and binary forms, with or without modification,
|
||||
are permitted provided that the following conditions are met:
|
||||
|
||||
1. Redistributions of source code must retain the above copyright notice, this
|
||||
* Redistributions of source code must retain the above copyright notice, this
|
||||
list of conditions and the following disclaimer.
|
||||
|
||||
2. Redistributions in binary form must reproduce the above copyright notice,
|
||||
* Redistributions in binary form must reproduce the above copyright notice,
|
||||
this list of conditions and the following disclaimer in the documentation
|
||||
and/or other materials provided with the distribution.
|
||||
* Neither the name of the copyright holder nor the names of its contributors may
|
||||
be used to endorse or promote products derived from this software without
|
||||
specific prior written permission.
|
||||
|
||||
3. Neither the name of the copyright holder nor the names of its
|
||||
contributors may be used to endorse or promote products derived from
|
||||
this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||||
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||||
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
||||
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
|
||||
OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
||||
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
|
|
|||
3
MANIFEST.in
Normal file
3
MANIFEST.in
Normal file
|
|
@ -0,0 +1,3 @@
|
|||
include README.rst
|
||||
include LICENSE
|
||||
include VERSION
|
||||
|
|
@ -1 +0,0 @@
|
|||
# sprockets-postgres
|
||||
67
README.rst
Normal file
67
README.rst
Normal file
|
|
@ -0,0 +1,67 @@
|
|||
Sprockets Postgres
|
||||
==================
|
||||
An set of mixins and classes for interacting with PostgreSQL using asyncio in
|
||||
Tornado / sprockets.http applications using aiopg.
|
||||
|
||||
|Version| |Status| |Coverage| |License|
|
||||
|
||||
Installation
|
||||
------------
|
||||
``sprockets-postgres`` is available on the Python package index and is installable via pip:
|
||||
|
||||
.. code:: bash
|
||||
|
||||
pip install sprockets-postgres
|
||||
|
||||
Documentation
|
||||
-------------
|
||||
Documentation is available at `sprockets-postgres.readthedocs.io <https://sprockets-postgres.readthedocs.io>`_.
|
||||
|
||||
Configuration
|
||||
-------------
|
||||
The following table details the environment variable configuration options:
|
||||
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| Variable | Definition | Default |
|
||||
+=================================+==================================================+===================+
|
||||
| ``POSTGRES_URL`` | The PostgreSQL URL to connect to | |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_MAX_POOL_SIZE`` | Maximum connection count to Postgres per backend | ``0`` (Unlimited) |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_MIN_POOL_SIZE`` | Minimum or starting pool size. | ``1`` |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_CONNECTION_TIMEOUT`` | The maximum time in seconds to spend attempting | ``10`` |
|
||||
| | to create a new connection. | |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_CONNECTION_TTL`` | Time-to-life in seconds for a pooled connection. | ``300`` |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_QUERY_TIMEOUT`` | Maximum execution time for a query in seconds. | ``60`` |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_HSTORE`` | Enable HSTORE support in the client. | ``FALSE`` |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_JSON`` | Enable JSON support in the client. | ``FALSE`` |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_UUID`` | Enable UUID support in the client. | ``TRUE`` |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
|
||||
Requirements
|
||||
------------
|
||||
- `aiopg <https://aioboto3.readthedocs.io/en/latest/>`_
|
||||
- `sprockets.http <https://sprocketshttp.readthedocs.io/en/master/>`_
|
||||
- `Tornado <https://tornadoweb.org>`_
|
||||
|
||||
Version History
|
||||
---------------
|
||||
Available at https://sprockets-postgres.readthedocs.org/en/latest/history.html
|
||||
|
||||
.. |Version| image:: https://img.shields.io/pypi/v/sprockets-postgres.svg?
|
||||
:target: http://badge.fury.io/py/sprockets-postgres
|
||||
|
||||
.. |Status| image:: https://img.shields.io/travis/sprockets/sprockets-postgres.svg?
|
||||
:target: https://travis-ci.org/sprockets/sprockets-postgres
|
||||
|
||||
.. |Coverage| image:: https://img.shields.io/codecov/c/github/sprockets/sprockets-postgres.svg?
|
||||
:target: https://codecov.io/github/sprockets/sprockets-postgres?branch=master
|
||||
|
||||
.. |License| image:: https://img.shields.io/pypi/l/sprockets-postgres.svg?
|
||||
:target: https://sprockets-postgres.readthedocs.org
|
||||
1
VERSION
Normal file
1
VERSION
Normal file
|
|
@ -0,0 +1 @@
|
|||
1.0.0
|
||||
77
bootstrap
Executable file
77
bootstrap
Executable file
|
|
@ -0,0 +1,77 @@
|
|||
#!/usr/bin/env sh
|
||||
set -e
|
||||
|
||||
# Common constants
|
||||
COLOR_RESET='\033[0m'
|
||||
COLOR_GREEN='\033[0;32m'
|
||||
COMPOSE_PROJECT_NAME="${COMPOSE_PROJECT_NAME:-${PWD##*/}}"
|
||||
TEST_HOST="${TEST_HOST:-localhost}"
|
||||
|
||||
echo "Integration test host: ${TEST_HOST}"
|
||||
|
||||
get_exposed_port() {
|
||||
if [ -z $3 ]
|
||||
then
|
||||
docker-compose port $1 $2 | cut -d: -f2
|
||||
else
|
||||
docker-compose port --index=$3 $1 $2 | cut -d: -f2
|
||||
fi
|
||||
}
|
||||
|
||||
report_start() {
|
||||
printf "Waiting for $1 ... "
|
||||
}
|
||||
|
||||
report_done() {
|
||||
printf "${COLOR_GREEN}done${COLOR_RESET}\n"
|
||||
}
|
||||
|
||||
wait_for_healthy_containers() {
|
||||
IDs=$(docker-compose ps -q | paste -sd " " -)
|
||||
report_start "${1} containers to report healthy"
|
||||
counter="0"
|
||||
while true
|
||||
do
|
||||
if [ "$(docker inspect -f "{{.State.Health.Status}}" ${IDs} | grep -c healthy)" -eq "${1}" ]; then
|
||||
break
|
||||
fi
|
||||
counter=$((++counter))
|
||||
if [ "${counter}" -eq 120 ]; then
|
||||
echo " ERROR: containers failed to start"
|
||||
exit 1
|
||||
fi
|
||||
sleep 1
|
||||
done
|
||||
report_done
|
||||
}
|
||||
|
||||
# Ensure Docker is Running
|
||||
echo "Docker Information:"
|
||||
echo ""
|
||||
docker version
|
||||
echo ""
|
||||
|
||||
# Activate the virtual environment
|
||||
if test -e env/bin/activate
|
||||
then
|
||||
. ./env/bin/activate
|
||||
fi
|
||||
|
||||
mkdir -p build
|
||||
|
||||
# Stop any running instances and clean up after them, then pull images
|
||||
docker-compose down --volumes --remove-orphans
|
||||
docker-compose up -d --quiet-pull
|
||||
|
||||
wait_for_healthy_containers 1
|
||||
|
||||
printf "Loading fixture data ... "
|
||||
docker-compose exec postgres psql -q -o /dev/null -U postgres -d postgres -f /fixtures/testing.sql
|
||||
report_done
|
||||
|
||||
cat > build/test-environment<<EOF
|
||||
export ASYNC_TEST_TIMEOUT=5
|
||||
export POSTGRES_URL=postgresql://postgres@${TEST_HOST}:$(get_exposed_port postgres 5432)/postgres
|
||||
EOF
|
||||
|
||||
printf "\nBootstrap complete\n\nDon't forget to \"source build/test-environment\"\n"
|
||||
17
docker-compose.yml
Normal file
17
docker-compose.yml
Normal file
|
|
@ -0,0 +1,17 @@
|
|||
version: '3.3'
|
||||
services:
|
||||
postgres:
|
||||
image: postgres:12-alpine
|
||||
environment:
|
||||
POSTGRES_HOST_AUTH_METHOD: trust
|
||||
healthcheck:
|
||||
test: pg_isready
|
||||
interval: 30s
|
||||
timeout: 10s
|
||||
retries: 3
|
||||
ports:
|
||||
- 5432
|
||||
volumes:
|
||||
- type: bind
|
||||
source: ./fixtures
|
||||
target: /fixtures
|
||||
6
docs/application.rst
Normal file
6
docs/application.rst
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
Application Mixin
|
||||
=================
|
||||
|
||||
.. autoclass:: sprockets_postgres.ApplicationMixin
|
||||
:members:
|
||||
:member-order: bysource
|
||||
41
docs/conf.py
Normal file
41
docs/conf.py
Normal file
|
|
@ -0,0 +1,41 @@
|
|||
import datetime
|
||||
|
||||
import pkg_resources
|
||||
|
||||
master_doc = 'index'
|
||||
project = 'sprockets-postgres'
|
||||
release = version = pkg_resources.get_distribution(project).version
|
||||
copyright = '{}, AWeber Communications'.format(datetime.date.today().year)
|
||||
|
||||
html_theme = 'sphinx_rtd_theme'
|
||||
html_theme_path = ['_themes']
|
||||
|
||||
extensions = [
|
||||
'sphinx.ext.autodoc',
|
||||
'sphinx.ext.intersphinx',
|
||||
'sphinx_autodoc_typehints',
|
||||
'sphinx.ext.viewcode'
|
||||
]
|
||||
|
||||
set_type_checking_flag = True
|
||||
typehints_fully_qualified = True
|
||||
always_document_param_types = True
|
||||
typehints_document_rtype = True
|
||||
|
||||
templates_path = ['_templates']
|
||||
exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
|
||||
intersphinx_mapping = {
|
||||
'aiopg': ('https://aiopg.readthedocs.io/en/stable/', None),
|
||||
'psycopg2': ('http://initd.org/psycopg/docs/', None),
|
||||
'python': ('https://docs.python.org/3', None),
|
||||
'sprockets-http': (
|
||||
'https://sprocketshttp.readthedocs.io/en/master/', None),
|
||||
'sprockets-influxdb': (
|
||||
'https://sprockets-influxdb.readthedocs.io/en/latest/', None),
|
||||
'sprockets.mixins.metrics': (
|
||||
'https://sprocketsmixinsmetrics.readthedocs.io/en/latest/', None),
|
||||
'tornado': ('http://tornadoweb.org/en/latest/', None)
|
||||
}
|
||||
|
||||
autodoc_default_options = {'autodoc_typehints': 'description'}
|
||||
|
||||
27
docs/configuration.rst
Normal file
27
docs/configuration.rst
Normal file
|
|
@ -0,0 +1,27 @@
|
|||
Configuration
|
||||
=============
|
||||
:py:mod:`sprockets-postgres <sprockets_postgres>` is configured via environment variables. The following table
|
||||
details the configuration options and their defaults.
|
||||
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| Variable | Definition | Default |
|
||||
+=================================+==================================================+===================+
|
||||
| ``POSTGRES_URL`` | The PostgreSQL URL to connect to | |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_MAX_POOL_SIZE`` | Maximum connection count to Postgres per backend | ``0`` (Unlimited) |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_MIN_POOL_SIZE`` | Minimum or starting pool size. | ``1`` |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_CONNECTION_TIMEOUT`` | The maximum time in seconds to spend attempting | ``10`` |
|
||||
| | to create a new connection. | |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_CONNECTION_TTL`` | Time-to-life in seconds for a pooled connection. | ``300`` |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_QUERY_TIMEOUT`` | Maximum execution time for a query in seconds. | ``60`` |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_HSTORE`` | Enable HSTORE support in the client. | ``FALSE`` |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_JSON`` | Enable JSON support in the client. | ``FALSE`` |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
| ``POSTGRES_UUID`` | Enable UUID support in the client. | ``TRUE`` |
|
||||
+---------------------------------+--------------------------------------------------+-------------------+
|
||||
9
docs/connector.rst
Normal file
9
docs/connector.rst
Normal file
|
|
@ -0,0 +1,9 @@
|
|||
Postgres Connector
|
||||
==================
|
||||
A :class:`~sprockets_postgres.PostgresConnector` instance contains a cursor for
|
||||
a Postgres connection and methods to execute queries.
|
||||
|
||||
.. autoclass:: sprockets_postgres.PostgresConnector
|
||||
:members:
|
||||
:undoc-members:
|
||||
:member-order: bysource
|
||||
44
docs/example.rst
Normal file
44
docs/example.rst
Normal file
|
|
@ -0,0 +1,44 @@
|
|||
Example Web Application
|
||||
=======================
|
||||
The following code provides a simple example for using the
|
||||
|
||||
.. code-block:: python
|
||||
|
||||
import sprockets.http
|
||||
import sprockets_postgres as postgres
|
||||
from sprockets.http import app
|
||||
|
||||
|
||||
class RequestHandler(postgres.RequestHandlerMixin, web.RequestHandler):
|
||||
|
||||
GET_SQL = """\
|
||||
SELECT foo_id, bar, baz, qux
|
||||
FROM public.foo
|
||||
WHERE foo_id = %(foo_id)s;"""
|
||||
|
||||
async def get(self, foo_id: str) -> None:
|
||||
result = await self.postgres_execute(self.GET_SQL, {'foo_id': foo_id})
|
||||
await self.finish(result.row)
|
||||
|
||||
|
||||
class Application(postgres.ApplicationMixin, app.Application):
|
||||
"""
|
||||
The ``ApplicationMixin`` provides the foundation for the
|
||||
``RequestHandlerMixin`` to properly function and will automatically
|
||||
setup the pool to connect to PostgreSQL and will shutdown the connections
|
||||
cleanly when the application stops.
|
||||
|
||||
It should be used in conjunction with ``sprockets.http.app.Application``
|
||||
and not directly with ``tornado.web.Application``.
|
||||
|
||||
"""
|
||||
|
||||
|
||||
def make_app(**settings):
|
||||
return Application([
|
||||
web.url(r'/foo/(?P<foo_id>.*)', FooRequestHandler)
|
||||
], **settings)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
sprockets.http.run(make_app)
|
||||
4
docs/exceptions.rst
Normal file
4
docs/exceptions.rst
Normal file
|
|
@ -0,0 +1,4 @@
|
|||
Exceptions
|
||||
==========
|
||||
|
||||
.. autoclass:: sprockets_postgres.ConnectionException
|
||||
2
docs/genindex.rst
Normal file
2
docs/genindex.rst
Normal file
|
|
@ -0,0 +1,2 @@
|
|||
Index
|
||||
=====
|
||||
33
docs/index.rst
Normal file
33
docs/index.rst
Normal file
|
|
@ -0,0 +1,33 @@
|
|||
Sprockets Postgres
|
||||
==================
|
||||
An set of mixins and classes for interacting with PostgreSQL using :mod:`asyncio`
|
||||
in :class:`Tornado <tornado.web.Application>` /
|
||||
:class:`sprockets.http <sprockets.http.app.Application>` applications using
|
||||
:py:mod:`aiopg`.
|
||||
|
||||
Python versions supported: 3.7+
|
||||
|
||||
Installation
|
||||
------------
|
||||
``sprockets-postgres`` is available on the Python package index and is installable via pip:
|
||||
|
||||
.. code:: bash
|
||||
|
||||
pip3 install sprockets-postgres
|
||||
|
||||
|
||||
Documentation
|
||||
-------------
|
||||
|
||||
.. toctree::
|
||||
:maxdepth: 1
|
||||
|
||||
configuration
|
||||
application
|
||||
request_handler
|
||||
query_result
|
||||
connector
|
||||
typing
|
||||
exceptions
|
||||
example
|
||||
genindex
|
||||
9
docs/query_result.rst
Normal file
9
docs/query_result.rst
Normal file
|
|
@ -0,0 +1,9 @@
|
|||
Query Result
|
||||
============
|
||||
A :class:`~sprockets_postgres.QueryResult` instance is created for every query
|
||||
and contains the count of rows effected by the query and either the ``row`` as
|
||||
a :class:`dict` or ``rows`` as a list of :class:`dict`. For queries that do
|
||||
not return any data, both ``row`` and ``rows`` will be :const:`None`.
|
||||
|
||||
.. autoclass:: sprockets_postgres.QueryResult
|
||||
:members:
|
||||
11
docs/request_handler.rst
Normal file
11
docs/request_handler.rst
Normal file
|
|
@ -0,0 +1,11 @@
|
|||
RequestHandler Mixin
|
||||
====================
|
||||
The :class:`~sprockets_postgres.RequestHandlerMixin` is a Tornado
|
||||
:class:`tornado.web.RequestHandler` mixin that provides easy to use
|
||||
functionality for interacting with PostgreSQL.
|
||||
|
||||
.. autoclass:: sprockets_postgres.RequestHandlerMixin
|
||||
:members:
|
||||
:undoc-members:
|
||||
:private-members:
|
||||
:member-order: bysource
|
||||
5
docs/requirements.txt
Normal file
5
docs/requirements.txt
Normal file
|
|
@ -0,0 +1,5 @@
|
|||
Sphinx==2.4.4
|
||||
sphinx-autodoc-typehints
|
||||
sphinx_rtd_theme
|
||||
typed_ast
|
||||
typing_extensions
|
||||
6
docs/typing.rst
Normal file
6
docs/typing.rst
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
Type Annotations
|
||||
================
|
||||
|
||||
.. autodata:: sprockets_postgres.QueryParameters
|
||||
|
||||
.. autodata:: sprockets_postgres.Timeout
|
||||
30
fixtures/testing.sql
Normal file
30
fixtures/testing.sql
Normal file
|
|
@ -0,0 +1,30 @@
|
|||
CREATE EXTENSION "uuid-ossp";
|
||||
|
||||
CREATE TABLE public.test (
|
||||
id UUID NOT NULL PRIMARY KEY,
|
||||
created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
|
||||
last_modified_at TIMESTAMP WITH TIME ZONE,
|
||||
value TEXT NOT NULL
|
||||
);
|
||||
|
||||
CREATE TABLE public.query_count(
|
||||
key TEXT NOT NULL PRIMARY KEY,
|
||||
last_updated_at TIMESTAMP WITH TIME ZONE,
|
||||
count INTEGER
|
||||
);
|
||||
|
||||
INSERT INTO public.query_count (key, last_updated_at, count)
|
||||
VALUES ('test', CURRENT_TIMESTAMP, 0);
|
||||
|
||||
CREATE TABLE public.test_rows (
|
||||
id INTEGER NOT NULL PRIMARY KEY GENERATED BY DEFAULT AS IDENTITY,
|
||||
created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
|
||||
last_modified_at TIMESTAMP WITH TIME ZONE,
|
||||
toggle BOOLEAN NOT NULL
|
||||
);
|
||||
|
||||
INSERT INTO public.test_rows (toggle) VALUES (FALSE);
|
||||
INSERT INTO public.test_rows (toggle) VALUES (FALSE);
|
||||
INSERT INTO public.test_rows (toggle) VALUES (FALSE);
|
||||
INSERT INTO public.test_rows (toggle) VALUES (FALSE);
|
||||
INSERT INTO public.test_rows (toggle) VALUES (FALSE);
|
||||
76
setup.cfg
Normal file
76
setup.cfg
Normal file
|
|
@ -0,0 +1,76 @@
|
|||
[metadata]
|
||||
name = sprockets-postgres
|
||||
version = file: VERSION
|
||||
description = An asynchronous Postgres client and mixin for Tornado applications
|
||||
long_description = file: README.rst
|
||||
long_description_content_type = text/x-rst; charset=UTF-8
|
||||
license = BSD 3-Clause License
|
||||
license-file = LICENSE
|
||||
home-page = https://github.com/sprockets/sprockets-postgres
|
||||
project_urls =
|
||||
Bug Tracker = https://github.com/sprockets/sprockets-postgres/issues
|
||||
Documentation = https://sprockets-postgres.readthedocs.io
|
||||
Source Code = https://github.com/sprockets/sprockets-postgres/
|
||||
classifiers =
|
||||
Development Status :: 3 - Alpha
|
||||
Intended Audience :: Developers
|
||||
License :: OSI Approved :: BSD License
|
||||
Natural Language :: English
|
||||
Operating System :: OS Independent
|
||||
Programming Language :: Python :: 3
|
||||
Programming Language :: Python :: 3.7
|
||||
Programming Language :: Python :: 3.8
|
||||
Topic :: Communications
|
||||
Topic :: Internet
|
||||
Topic :: Software Development
|
||||
Typing :: Typed
|
||||
requires-dist = setuptools
|
||||
keywords =
|
||||
postgres
|
||||
python3
|
||||
tornado
|
||||
|
||||
[options]
|
||||
include_package_data = True
|
||||
install_requires =
|
||||
aiopg>=1.0.0,<2
|
||||
sprockets.http>=2.1.1,<3
|
||||
tornado>=6,<7
|
||||
pymodules =
|
||||
sprockets_postgres
|
||||
zip_safe = true
|
||||
|
||||
[options.extras_require]
|
||||
testing =
|
||||
coverage
|
||||
flake8
|
||||
flake8-comprehensions
|
||||
flake8-deprecated
|
||||
flake8-import-order
|
||||
flake8-print
|
||||
flake8-quotes
|
||||
flake8-rst-docstrings
|
||||
flake8-tuple
|
||||
pygments
|
||||
|
||||
[coverage:run]
|
||||
branch = True
|
||||
command_line = -m unittest discover tests --verbose
|
||||
data_file = build/.coverage
|
||||
|
||||
[coverage:report]
|
||||
show_missing = True
|
||||
include =
|
||||
sprockets_postgres.py
|
||||
|
||||
[coverage:html]
|
||||
directory = build/coverage
|
||||
|
||||
[coverage:xml]
|
||||
output = build/coverage.xml
|
||||
|
||||
[flake8]
|
||||
application-import-names = sprockets_postgres,tests
|
||||
exclude = build,docs,env
|
||||
import-order-style = pycharm
|
||||
rst-roles = attr,class,const,data,exc,func,meth,mod,obj,ref,yields
|
||||
3
setup.py
Normal file
3
setup.py
Normal file
|
|
@ -0,0 +1,3 @@
|
|||
import setuptools
|
||||
|
||||
setuptools.setup()
|
||||
585
sprockets_postgres.py
Normal file
585
sprockets_postgres.py
Normal file
|
|
@ -0,0 +1,585 @@
|
|||
import asyncio
|
||||
import contextlib
|
||||
import dataclasses
|
||||
import logging
|
||||
import os
|
||||
import time
|
||||
import typing
|
||||
from distutils import util
|
||||
|
||||
import aiopg
|
||||
import psycopg2
|
||||
from aiopg import pool
|
||||
from psycopg2 import errors, extras
|
||||
from tornado import ioloop, web
|
||||
|
||||
LOGGER = logging.getLogger('sprockets-postgres')
|
||||
|
||||
DEFAULT_POSTGRES_CONNECTION_TIMEOUT = 10
|
||||
DEFAULT_POSTGRES_CONNECTION_TTL = 300
|
||||
DEFAULT_POSTGRES_HSTORE = 'FALSE'
|
||||
DEFAULT_POSTGRES_JSON = 'FALSE'
|
||||
DEFAULT_POSTGRES_MAX_POOL_SIZE = 0
|
||||
DEFAULT_POSTGRES_MIN_POOL_SIZE = 1
|
||||
DEFAULT_POSTGRES_QUERY_TIMEOUT = 120
|
||||
DEFAULT_POSTGRES_UUID = 'TRUE'
|
||||
|
||||
QueryParameters = typing.Union[dict, list, tuple, None]
|
||||
"""Type annotation for query parameters"""
|
||||
|
||||
Timeout = typing.Union[int, float, None]
|
||||
"""Type annotation for timeout values"""
|
||||
|
||||
|
||||
@dataclasses.dataclass
|
||||
class QueryResult:
|
||||
"""A :func:`Data Class <dataclasses.dataclass>` that is generated as a
|
||||
result of each query that is executed.
|
||||
|
||||
:param row_count: The quantity of rows impacted by the query
|
||||
:param row: If a single row is returned, the data for that row
|
||||
:param rows: If more than one row is returned, this attribute is set as the
|
||||
list of rows, in order.
|
||||
|
||||
"""
|
||||
row_count: int
|
||||
row: typing.Optional[dict]
|
||||
rows: typing.Optional[typing.List[dict]]
|
||||
|
||||
|
||||
class PostgresConnector:
|
||||
"""Wraps a :class:`aiopg.Cursor` instance for creating explicit
|
||||
transactions, calling stored procedures, and executing queries.
|
||||
|
||||
Unless the :meth:`~sprockets_postgres.PostgresConnector.transaction`
|
||||
asynchronous :ref:`context-manager <python:typecontextmanager>` is used,
|
||||
each call to :meth:`~sprockets_postgres.PostgresConnector.callproc` and
|
||||
:meth:`~sprockets_postgres.PostgresConnector.execute` is an explicit
|
||||
transaction.
|
||||
|
||||
.. note:: :class:`PostgresConnector` instances are created by
|
||||
:meth:`ApplicationMixin.postgres_connector
|
||||
<sprockets_postgres.ApplicationMixin.postgres_connector>` and should
|
||||
not be created directly.
|
||||
|
||||
:param cursor: The cursor to use in the connector
|
||||
:type cursor: aiopg.Cursor
|
||||
:param on_error: The callback to invoke when an exception is caught
|
||||
:param on_duration: The callback to invoke when a query is complete and all
|
||||
of the data has been returned.
|
||||
:param timeout: A timeout value in seconds for executing queries. If
|
||||
unspecified, defaults to the ``POSTGRES_QUERY_TIMEOUT`` environment
|
||||
variable and if that is not specified, to the
|
||||
:const:`DEFAULT_POSTGRES_QUERY_TIMEOUT` value of ``120``
|
||||
:type timeout: :data:`~sprockets_postgres.Timeout`
|
||||
|
||||
"""
|
||||
def __init__(self,
|
||||
cursor: aiopg.Cursor,
|
||||
on_error: typing.Callable,
|
||||
on_duration: typing.Optional[typing.Callable] = None,
|
||||
timeout: Timeout = None):
|
||||
self.cursor = cursor
|
||||
self._on_error = on_error
|
||||
self._on_duration = on_duration
|
||||
self._timeout = timeout or int(
|
||||
os.environ.get(
|
||||
'POSTGRES_QUERY_TIMEOUT',
|
||||
DEFAULT_POSTGRES_QUERY_TIMEOUT))
|
||||
|
||||
async def callproc(self,
|
||||
name: str,
|
||||
parameters: QueryParameters = None,
|
||||
metric_name: str = '',
|
||||
*,
|
||||
timeout: Timeout = None) -> QueryResult:
|
||||
"""Execute a stored procedure / function
|
||||
|
||||
:param name: The stored procedure / function name to call
|
||||
:param parameters: Query parameters to pass when calling
|
||||
:type parameters: :data:`~sprockets_postgres.QueryParameters`
|
||||
:param metric_name: The metric name for duration recording and logging
|
||||
:param timeout: Timeout value to override the default or the value
|
||||
specified when creating the
|
||||
:class:`~sprockets_postgres.PostgresConnector`.
|
||||
:type timeout: :data:`~sprockets_postgres.Timeout`
|
||||
|
||||
:raises asyncio.TimeoutError: when there is a query or network timeout
|
||||
:raises psycopg2.Error: when there is an exception raised by Postgres
|
||||
|
||||
.. note: :exc:`psycopg2.Error` is the base exception for all
|
||||
:mod:`psycopg2` exceptions and the actual exception raised will
|
||||
likely be more specific.
|
||||
|
||||
:rtype: :class:`~sprockets_postgres.QueryResult`
|
||||
|
||||
"""
|
||||
return await self._query(
|
||||
self.cursor.callproc,
|
||||
metric_name,
|
||||
procname=name,
|
||||
parameters=parameters,
|
||||
timeout=timeout)
|
||||
|
||||
async def execute(self,
|
||||
sql: str,
|
||||
parameters: QueryParameters = None,
|
||||
metric_name: str = '',
|
||||
*,
|
||||
timeout: Timeout = None) -> QueryResult:
|
||||
"""Execute a query, specifying a name for the query, the SQL statement,
|
||||
and optional positional arguments to pass in with the query.
|
||||
|
||||
Parameters may be provided as sequence or mapping and will be
|
||||
bound to variables in the operation. Variables are specified
|
||||
either with positional ``%s`` or named ``%({name})s`` placeholders.
|
||||
|
||||
:param sql: The SQL statement to execute
|
||||
:param parameters: Query parameters to pass as part of the execution
|
||||
:type parameters: :data:`~sprockets_postgres.QueryParameters`
|
||||
:param metric_name: The metric name for duration recording and logging
|
||||
:param timeout: Timeout value to override the default or the value
|
||||
specified when creating the
|
||||
:class:`~sprockets_postgres.PostgresConnector`.
|
||||
:type timeout: :data:`~sprockets_postgres.Timeout`
|
||||
|
||||
:raises asyncio.TimeoutError: when there is a query or network timeout
|
||||
:raises psycopg2.Error: when there is an exception raised by Postgres
|
||||
|
||||
.. note: :exc:`psycopg2.Error` is the base exception for all
|
||||
:mod:`psycopg2` exceptions and the actual exception raised will
|
||||
likely be more specific.
|
||||
|
||||
:rtype: :class:`~sprockets_postgres.QueryResult`
|
||||
|
||||
"""
|
||||
return await self._query(
|
||||
self.cursor.execute,
|
||||
metric_name,
|
||||
operation=sql,
|
||||
parameters=parameters,
|
||||
timeout=timeout)
|
||||
|
||||
@contextlib.asynccontextmanager
|
||||
async def transaction(self) \
|
||||
-> typing.AsyncContextManager['PostgresConnector']:
|
||||
"""asynchronous :ref:`context-manager <python:typecontextmanager>`
|
||||
function that implements full ``BEGIN``, ``COMMIT``, and ``ROLLBACK``
|
||||
semantics. If there is a :exc:`psycopg2.Error` raised during the
|
||||
transaction, the entire transaction will be rolled back.
|
||||
|
||||
If no exception is raised, the transaction will be committed when
|
||||
exiting the context manager.
|
||||
|
||||
.. note:: This method is provided for edge case usage. As a
|
||||
generalization
|
||||
:meth:`sprockets_postgres.RequestHandlerMixin.postgres_transaction`
|
||||
should be used instead.
|
||||
|
||||
*Usage Example*
|
||||
|
||||
.. code-block::
|
||||
|
||||
class RequestHandler(sprockets_postgres.RequestHandlerMixin,
|
||||
web.RequestHandler):
|
||||
|
||||
async def post(self):
|
||||
async with self.postgres_transaction() as transaction:
|
||||
result1 = await transaction.execute(QUERY_ONE)
|
||||
result2 = await transaction.execute(QUERY_TWO)
|
||||
result3 = await transaction.execute(QUERY_THREE)
|
||||
|
||||
:raises asyncio.TimeoutError: when there is a query or network timeout
|
||||
when starting the transaction
|
||||
:raises psycopg2.Error: when there is an exception raised by Postgres
|
||||
when starting the transaction
|
||||
|
||||
.. note: :exc:`psycopg2.Error` is the base exception for all
|
||||
:mod:`psycopg2` exceptions and the actual exception raised will
|
||||
likely be more specific.
|
||||
|
||||
"""
|
||||
async with self.cursor.begin():
|
||||
yield self
|
||||
|
||||
async def _query(self,
|
||||
method: typing.Callable,
|
||||
metric_name: str,
|
||||
**kwargs):
|
||||
if kwargs['timeout'] is None:
|
||||
kwargs['timeout'] = self._timeout
|
||||
start_time = time.monotonic()
|
||||
try:
|
||||
await method(**kwargs)
|
||||
except (asyncio.TimeoutError, psycopg2.Error) as err:
|
||||
exc = self._on_error(metric_name, err)
|
||||
if exc:
|
||||
raise exc
|
||||
else:
|
||||
results = await self._query_results()
|
||||
if self._on_duration:
|
||||
self._on_duration(
|
||||
metric_name, time.monotonic() - start_time)
|
||||
return results
|
||||
|
||||
async def _query_results(self) -> QueryResult:
|
||||
count, row, rows = self.cursor.rowcount, None, None
|
||||
if self.cursor.rowcount == 1:
|
||||
try:
|
||||
row = dict(await self.cursor.fetchone())
|
||||
except psycopg2.ProgrammingError:
|
||||
pass
|
||||
elif self.cursor.rowcount > 1:
|
||||
try:
|
||||
rows = [dict(row) for row in await self.cursor.fetchall()]
|
||||
except psycopg2.ProgrammingError:
|
||||
pass
|
||||
return QueryResult(count, row, rows)
|
||||
|
||||
|
||||
class ConnectionException(Exception):
|
||||
"""Raised when the connection to Postgres can not be established"""
|
||||
|
||||
|
||||
class ApplicationMixin:
|
||||
"""
|
||||
:class:`sprockets.http.app.Application` / :class:`tornado.web.Application`
|
||||
mixin for handling the connection to Postgres and exporting functions for
|
||||
querying the database, getting the status, and proving a cursor.
|
||||
|
||||
Automatically creates and shuts down :class:`aiopg.Pool` on startup
|
||||
and shutdown by installing `on_start` and `shutdown` callbacks into the
|
||||
:class:`~sprockets.http.app.Application` instance.
|
||||
|
||||
"""
|
||||
POSTGRES_STATUS_TIMEOUT = 3
|
||||
|
||||
def __init__(self, *args, **kwargs):
|
||||
super().__init__(*args, **kwargs)
|
||||
self._postgres_pool: typing.Optional[pool.Pool] = None
|
||||
self.runner_callbacks['on_start'].append(self._postgres_setup)
|
||||
self.runner_callbacks['shutdown'].append(self._postgres_shutdown)
|
||||
|
||||
@contextlib.asynccontextmanager
|
||||
async def postgres_connector(self,
|
||||
on_error: typing.Callable,
|
||||
on_duration: typing.Optional[
|
||||
typing.Callable] = None,
|
||||
timeout: Timeout = None) \
|
||||
-> typing.AsyncContextManager[PostgresConnector]:
|
||||
"""Asynchronous :ref:`context-manager <python:typecontextmanager>`
|
||||
that returns a :class:`~sprockets_postgres.PostgresConnector` instance
|
||||
from the connection pool with a cursor.
|
||||
|
||||
.. note:: This function is designed to work in conjunction with the
|
||||
:class:`~sprockets_postgres.RequestHandlerMixin` and is generally
|
||||
not invoked directly.
|
||||
|
||||
:param on_error: A callback function that is invoked on exception. If
|
||||
an exception is returned from that function, it will raise it.
|
||||
:param on_duration: An optional callback function that is invoked after
|
||||
a query has completed to record the duration that encompasses
|
||||
both executing the query and retrieving the returned records, if
|
||||
any.
|
||||
:param timeout: Used to override the default query timeout.
|
||||
:type timeout: :data:`~sprockets_postgres.Timeout`
|
||||
|
||||
:raises asyncio.TimeoutError: when the request to retrieve a connection
|
||||
from the pool times out.
|
||||
:raises sprockets_postgres.ConnectionException: when the application
|
||||
can not connect to the configured Postgres instance.
|
||||
:raises psycopg2.Error: when Postgres raises an exception during the
|
||||
creation of the cursor.
|
||||
|
||||
.. note: :exc:`psycopg2.Error` is the base exception for all
|
||||
:mod:`psycopg2` exceptions and the actual exception raised will
|
||||
likely be more specific.
|
||||
|
||||
"""
|
||||
try:
|
||||
async with self._postgres_pool.acquire() as conn:
|
||||
async with conn.cursor(
|
||||
cursor_factory=extras.RealDictCursor,
|
||||
timeout=timeout) as cursor:
|
||||
yield PostgresConnector(
|
||||
cursor, on_error, on_duration, timeout)
|
||||
except (asyncio.TimeoutError, psycopg2.Error) as err:
|
||||
exc = on_error('postgres_connector', ConnectionException(str(err)))
|
||||
if exc:
|
||||
raise exc
|
||||
else: # postgres_status.on_error does not return an exception
|
||||
yield None
|
||||
|
||||
async def postgres_status(self) -> dict:
|
||||
"""Invoke from the ``/status`` RequestHandler to check that there is
|
||||
a Postgres connection handler available and return info about the
|
||||
pool.
|
||||
|
||||
The ``available`` item in the dictionary indicates that the
|
||||
application was able to perform a ``SELECT 1`` against the database
|
||||
using a :class:`~sprockets_postgres.PostgresConnector` instance.
|
||||
|
||||
The ``pool_size`` item indicates the current quantity of open
|
||||
connections to Postgres.
|
||||
|
||||
The ``pool_free`` item indicates the current number of idle
|
||||
connections available to process queries.
|
||||
|
||||
*Example return value*
|
||||
|
||||
.. code-block:: python
|
||||
|
||||
{
|
||||
'available': True,
|
||||
'pool_size': 10,
|
||||
'pool_free': 8
|
||||
}
|
||||
|
||||
"""
|
||||
query_error = asyncio.Event()
|
||||
|
||||
def on_error(_metric_name, _exc) -> None:
|
||||
query_error.set()
|
||||
return None
|
||||
|
||||
async with self.postgres_connector(
|
||||
on_error,
|
||||
timeout=self.POSTGRES_STATUS_TIMEOUT) as connector:
|
||||
if connector:
|
||||
await connector.execute('SELECT 1')
|
||||
|
||||
return {
|
||||
'available': not query_error.is_set(),
|
||||
'pool_size': self._postgres_pool.size,
|
||||
'pool_free': self._postgres_pool.freesize
|
||||
}
|
||||
|
||||
async def _postgres_setup(self,
|
||||
_app: web.Application,
|
||||
loop: ioloop.IOLoop) -> None:
|
||||
"""Setup the Postgres pool of connections and log if there is an error.
|
||||
|
||||
This is invoked by the Application on start callback mechanism.
|
||||
|
||||
"""
|
||||
if 'POSTGRES_URL' not in os.environ:
|
||||
LOGGER.critical('Missing POSTGRES_URL environment variable')
|
||||
return self.stop(loop)
|
||||
self._postgres_pool = pool.Pool(
|
||||
os.environ['POSTGRES_URL'],
|
||||
minsize=int(
|
||||
os.environ.get(
|
||||
'POSTGRES_MIN_POOL_SIZE',
|
||||
DEFAULT_POSTGRES_MIN_POOL_SIZE)),
|
||||
maxsize=int(
|
||||
os.environ.get(
|
||||
'POSTGRES_MAX_POOL_SIZE',
|
||||
DEFAULT_POSTGRES_MAX_POOL_SIZE)),
|
||||
timeout=int(
|
||||
os.environ.get(
|
||||
'POSTGRES_CONNECT_TIMEOUT',
|
||||
DEFAULT_POSTGRES_CONNECTION_TIMEOUT)),
|
||||
enable_hstore=util.strtobool(
|
||||
os.environ.get(
|
||||
'POSTGRES_HSTORE', DEFAULT_POSTGRES_HSTORE)),
|
||||
enable_json=util.strtobool(
|
||||
os.environ.get('POSTGRES_JSON', DEFAULT_POSTGRES_JSON)),
|
||||
enable_uuid=util.strtobool(
|
||||
os.environ.get('POSTGRES_UUID', DEFAULT_POSTGRES_UUID)),
|
||||
echo=False,
|
||||
on_connect=None,
|
||||
pool_recycle=int(
|
||||
os.environ.get(
|
||||
'POSTGRES_CONNECTION_TTL',
|
||||
DEFAULT_POSTGRES_CONNECTION_TTL)))
|
||||
try:
|
||||
async with self._postgres_pool._cond:
|
||||
await self._postgres_pool._fill_free_pool(False)
|
||||
except (psycopg2.OperationalError,
|
||||
psycopg2.Error) as error: # pragma: nocover
|
||||
LOGGER.warning('Error connecting to PostgreSQL on startup: %s',
|
||||
error)
|
||||
|
||||
async def _postgres_shutdown(self, _ioloop: ioloop.IOLoop) -> None:
|
||||
"""Shutdown the Postgres connections and wait for them to close.
|
||||
|
||||
This is invoked by the Application shutdown callback mechanism.
|
||||
|
||||
"""
|
||||
if self._postgres_pool is not None:
|
||||
self._postgres_pool.close()
|
||||
await self._postgres_pool.wait_closed()
|
||||
|
||||
|
||||
class RequestHandlerMixin:
|
||||
"""
|
||||
A RequestHandler mixin class exposing functions for querying the database,
|
||||
recording the duration to either :mod:`sprockets-influxdb
|
||||
<sprockets_influxdb>` or :mod:`sprockets.mixins.metrics`, and
|
||||
handling exceptions.
|
||||
|
||||
"""
|
||||
async def postgres_callproc(self,
|
||||
name: str,
|
||||
parameters: QueryParameters = None,
|
||||
metric_name: str = '',
|
||||
*,
|
||||
timeout: Timeout = None) -> QueryResult:
|
||||
"""Execute a stored procedure / function
|
||||
|
||||
:param name: The stored procedure / function name to call
|
||||
:param parameters: Query parameters to pass when calling
|
||||
:type parameters: :data:`~sprockets_postgres.QueryParameters`
|
||||
:param metric_name: The metric name for duration recording and logging
|
||||
:param timeout: Timeout value to override the default or the value
|
||||
specified when creating the
|
||||
:class:`~sprockets_postgres.PostgresConnector`.
|
||||
:type timeout: :data:`~sprockets_postgres.Timeout`
|
||||
|
||||
:raises asyncio.TimeoutError: when there is a query or network timeout
|
||||
:raises psycopg2.Error: when there is an exception raised by Postgres
|
||||
|
||||
.. note: :exc:`psycopg2.Error` is the base exception for all
|
||||
:mod:`psycopg2` exceptions and the actual exception raised will
|
||||
likely be more specific.
|
||||
|
||||
:rtype: :class:`~sprockets_postgres.QueryResult`
|
||||
|
||||
"""
|
||||
async with self.application.postgres_connector(
|
||||
self._on_postgres_error,
|
||||
self._on_postgres_timing,
|
||||
timeout) as connector:
|
||||
return await connector.callproc(
|
||||
name, parameters, metric_name, timeout=timeout)
|
||||
|
||||
async def postgres_execute(self,
|
||||
sql: str,
|
||||
parameters: QueryParameters = None,
|
||||
metric_name: str = '',
|
||||
*,
|
||||
timeout: Timeout = None) -> QueryResult:
|
||||
"""Execute a query, specifying a name for the query, the SQL statement,
|
||||
and optional positional arguments to pass in with the query.
|
||||
|
||||
Parameters may be provided as sequence or mapping and will be
|
||||
bound to variables in the operation. Variables are specified
|
||||
either with positional ``%s`` or named ``%({name})s`` placeholders.
|
||||
|
||||
:param sql: The SQL statement to execute
|
||||
:param parameters: Query parameters to pass as part of the execution
|
||||
:type parameters: :data:`~sprockets_postgres.QueryParameters`
|
||||
:param metric_name: The metric name for duration recording and logging
|
||||
:param timeout: Timeout value to override the default or the value
|
||||
specified when creating the
|
||||
:class:`~sprockets_postgres.PostgresConnector`.
|
||||
:type timeout: :data:`~sprockets_postgres.Timeout`
|
||||
|
||||
:raises asyncio.TimeoutError: when there is a query or network timeout
|
||||
:raises psycopg2.Error: when there is an exception raised by Postgres
|
||||
|
||||
.. note: :exc:`psycopg2.Error` is the base exception for all
|
||||
:mod:`psycopg2` exceptions and the actual exception raised will
|
||||
likely be more specific.
|
||||
|
||||
:rtype: :class:`~sprockets_postgres.QueryResult`
|
||||
|
||||
"""
|
||||
async with self.application.postgres_connector(
|
||||
self._on_postgres_error,
|
||||
self._on_postgres_timing,
|
||||
timeout) as connector:
|
||||
return await connector.execute(
|
||||
sql, parameters, metric_name, timeout=timeout)
|
||||
|
||||
@contextlib.asynccontextmanager
|
||||
async def postgres_transaction(self, timeout: Timeout = None) \
|
||||
-> typing.AsyncContextManager[PostgresConnector]:
|
||||
"""asynchronous :ref:`context-manager <python:typecontextmanager>`
|
||||
function that implements full ``BEGIN``, ``COMMIT``, and ``ROLLBACK``
|
||||
semantics. If there is a :exc:`psycopg2.Error` raised during the
|
||||
transaction, the entire transaction will be rolled back.
|
||||
|
||||
If no exception is raised, the transaction will be committed when
|
||||
exiting the context manager.
|
||||
|
||||
*Usage Example*
|
||||
|
||||
.. code-block:: python
|
||||
|
||||
class RequestHandler(sprockets_postgres.RequestHandlerMixin,
|
||||
web.RequestHandler):
|
||||
|
||||
async def post(self):
|
||||
async with self.postgres_transaction() as transaction:
|
||||
result1 = await transaction.execute(QUERY_ONE)
|
||||
result2 = await transaction.execute(QUERY_TWO)
|
||||
result3 = await transaction.execute(QUERY_THREE)
|
||||
|
||||
|
||||
:param timeout: Timeout value to override the default or the value
|
||||
specified when creating the
|
||||
:class:`~sprockets_postgres.PostgresConnector`.
|
||||
:type timeout: :data:`~sprockets_postgres.Timeout`
|
||||
|
||||
:raises asyncio.TimeoutError: when there is a query or network timeout
|
||||
when starting the transaction
|
||||
:raises psycopg2.Error: when there is an exception raised by Postgres
|
||||
when starting the transaction
|
||||
|
||||
.. note: :exc:`psycopg2.Error` is the base exception for all
|
||||
:mod:`psycopg2` exceptions and the actual exception raised will
|
||||
likely be more specific.
|
||||
|
||||
"""
|
||||
async with self.application.postgres_connector(
|
||||
self._on_postgres_error,
|
||||
self._on_postgres_timing,
|
||||
timeout) as connector:
|
||||
async with connector.transaction():
|
||||
yield connector
|
||||
|
||||
def _on_postgres_error(self,
|
||||
metric_name: str,
|
||||
exc: Exception) -> typing.Optional[Exception]:
|
||||
"""Override for different error handling behaviors
|
||||
|
||||
Return an exception if you would like for it to be raised, or swallow
|
||||
it here.
|
||||
|
||||
"""
|
||||
LOGGER.error('%s in %s for %s (%s)',
|
||||
exc.__class__.__name__, self.__class__.__name__,
|
||||
metric_name, str(exc).split('\n')[0])
|
||||
if isinstance(exc, ConnectionException):
|
||||
raise web.HTTPError(503, reason='Database Connection Error')
|
||||
elif isinstance(exc, asyncio.TimeoutError):
|
||||
raise web.HTTPError(500, reason='Query Timeout')
|
||||
elif isinstance(exc, errors.UniqueViolation):
|
||||
raise web.HTTPError(409, reason='Unique Violation')
|
||||
elif isinstance(exc, psycopg2.Error):
|
||||
raise web.HTTPError(500, reason='Database Error')
|
||||
return exc
|
||||
|
||||
def _on_postgres_timing(self,
|
||||
metric_name: str,
|
||||
duration: float) -> None:
|
||||
"""Override for custom metric recording. As a default behavior it will
|
||||
attempt to detect `sprockets-influxdb
|
||||
<https://sprockets-influxdb.readthedocs.io/>`_ and
|
||||
`sprockets.mixins.metrics
|
||||
<https://sprocketsmixinsmetrics.readthedocs.io/en/latest/>`_ and
|
||||
record the metrics using them if they are available. If they are not
|
||||
available, it will record the query duration to the `DEBUG` log.
|
||||
|
||||
:param metric_name: The name of the metric to record
|
||||
:param duration: The duration to record for the metric
|
||||
|
||||
"""
|
||||
if hasattr(self, 'influxdb'): # sprockets-influxdb
|
||||
self.influxdb.set_field(metric_name, duration)
|
||||
elif hasattr(self, 'record_timing'): # sprockets.mixins.metrics
|
||||
self.record_timing(metric_name, duration)
|
||||
else:
|
||||
LOGGER.debug('Postgres query %s duration: %s',
|
||||
metric_name, duration)
|
||||
431
tests.py
Normal file
431
tests.py
Normal file
|
|
@ -0,0 +1,431 @@
|
|||
import asyncio
|
||||
import json
|
||||
import os
|
||||
import typing
|
||||
import unittest
|
||||
import uuid
|
||||
from unittest import mock
|
||||
|
||||
import psycopg2
|
||||
from psycopg2 import errors
|
||||
from sprockets.http import app, testing
|
||||
from tornado import ioloop, web
|
||||
|
||||
import sprockets_postgres
|
||||
|
||||
|
||||
class RequestHandler(sprockets_postgres.RequestHandlerMixin,
|
||||
web.RequestHandler):
|
||||
"""Base RequestHandler for test endpoints"""
|
||||
|
||||
def cast_data(self, data: typing.Union[dict, list, None]) \
|
||||
-> typing.Union[dict, list, None]:
|
||||
if data is None:
|
||||
return None
|
||||
elif isinstance(data, list):
|
||||
return [self.cast_data(row) for row in data]
|
||||
return {k: str(v) for k, v in data.items()}
|
||||
|
||||
|
||||
class CallprocRequestHandler(RequestHandler):
|
||||
|
||||
async def get(self):
|
||||
result = await self.postgres_callproc(
|
||||
'uuid_generate_v4', metric_name='uuid')
|
||||
await self.finish({'value': str(result.row['uuid_generate_v4'])})
|
||||
|
||||
|
||||
class CountRequestHandler(RequestHandler):
|
||||
|
||||
GET_SQL = """\
|
||||
SELECT last_updated_at, count
|
||||
FROM public.query_count
|
||||
WHERE key = 'test';"""
|
||||
|
||||
async def get(self):
|
||||
result = await self.postgres_execute(self.GET_SQL)
|
||||
await self.finish(self.cast_data(result.row))
|
||||
|
||||
|
||||
class ErrorRequestHandler(RequestHandler):
|
||||
|
||||
GET_SQL = """\
|
||||
SELECT last_updated_at, count
|
||||
FROM public.query_count
|
||||
WHERE key = 'test';"""
|
||||
|
||||
async def get(self):
|
||||
await self.postgres_execute(self.GET_SQL)
|
||||
self.set_status(204)
|
||||
|
||||
def _on_postgres_error(self,
|
||||
metric_name: str,
|
||||
exc: Exception) -> typing.Optional[Exception]:
|
||||
return RuntimeError()
|
||||
|
||||
|
||||
class ErrorPassthroughRequestHandler(RequestHandler):
|
||||
|
||||
async def get(self):
|
||||
exc = self._on_postgres_error('test', RuntimeError())
|
||||
if isinstance(exc, RuntimeError):
|
||||
self.set_status(204)
|
||||
else:
|
||||
raise web.HTTPError(500, 'Did not pass through')
|
||||
|
||||
|
||||
class ExecuteRequestHandler(RequestHandler):
|
||||
|
||||
GET_SQL = 'SELECT %s::TEXT AS value;'
|
||||
|
||||
async def get(self):
|
||||
timeout = self.get_argument('timeout', None)
|
||||
if timeout is not None:
|
||||
timeout = int(timeout)
|
||||
result = await self.postgres_execute(
|
||||
self.GET_SQL, [self.get_argument('value')], timeout=timeout)
|
||||
await self.finish({
|
||||
'value': result.row['value'] if result.row else None})
|
||||
|
||||
|
||||
class InfluxDBRequestHandler(ExecuteRequestHandler):
|
||||
|
||||
def __init__(self, *args, **kwargs):
|
||||
super().__init__(*args, **kwargs)
|
||||
self.influxdb = self.application.influxdb
|
||||
self.influxdb.add_field = mock.Mock()
|
||||
|
||||
|
||||
class MetricsMixinRequestHandler(ExecuteRequestHandler):
|
||||
|
||||
def __init__(self, *args, **kwargs):
|
||||
super().__init__(*args, **kwargs)
|
||||
self.record_timing = self.application.record_timing
|
||||
|
||||
|
||||
class MultiRowRequestHandler(RequestHandler):
|
||||
|
||||
GET_SQL = 'SELECT * FROM public.test_rows;'
|
||||
|
||||
UPDATE_SQL = """\
|
||||
UPDATE public.test_rows
|
||||
SET toggle = %(to_value)s,
|
||||
last_modified_at = CURRENT_TIMESTAMP
|
||||
WHERE toggle IS %(from_value)s"""
|
||||
|
||||
async def get(self):
|
||||
result = await self.postgres_execute(self.GET_SQL)
|
||||
await self.finish({
|
||||
'count': result.row_count,
|
||||
'rows': self.cast_data(result.rows)})
|
||||
|
||||
async def post(self):
|
||||
body = json.loads(self.request.body.decode('utf-8'))
|
||||
result = await self.postgres_execute(
|
||||
self.UPDATE_SQL, {
|
||||
'to_value': body['value'], 'from_value': not body['value']})
|
||||
await self.finish({
|
||||
'count': result.row_count,
|
||||
'rows': self.cast_data(result.rows)})
|
||||
|
||||
|
||||
class NoErrorRequestHandler(ErrorRequestHandler):
|
||||
|
||||
def _on_postgres_error(self,
|
||||
metric_name: str,
|
||||
exc: Exception) -> typing.Optional[Exception]:
|
||||
return None
|
||||
|
||||
|
||||
class NoRowRequestHandler(RequestHandler):
|
||||
|
||||
GET_SQL = """\
|
||||
SELECT * FROM information_schema.tables WHERE table_schema = 'foo';"""
|
||||
|
||||
async def get(self):
|
||||
result = await self.postgres_execute(self.GET_SQL)
|
||||
await self.finish({
|
||||
'count': result.row_count,
|
||||
'rows': self.cast_data(result.rows)})
|
||||
|
||||
|
||||
class StatusRequestHandler(RequestHandler):
|
||||
|
||||
async def get(self):
|
||||
status = await self.application.postgres_status()
|
||||
if not status['available']:
|
||||
self.set_status(503, 'Database Unavailable')
|
||||
await self.finish(status)
|
||||
|
||||
|
||||
class TransactionRequestHandler(RequestHandler):
|
||||
|
||||
GET_SQL = """\
|
||||
SELECT id, created_at, last_modified_at, value
|
||||
FROM public.test
|
||||
WHERE id = %(id)s;"""
|
||||
|
||||
POST_SQL = """\
|
||||
INSERT INTO public.test (id, created_at, value)
|
||||
VALUES (%(id)s, CURRENT_TIMESTAMP, %(value)s)
|
||||
RETURNING id, created_at, value;"""
|
||||
|
||||
UPDATE_COUNT_SQL = """\
|
||||
UPDATE public.query_count
|
||||
SET count = count + 1,
|
||||
last_updated_at = CURRENT_TIMESTAMP
|
||||
WHERE key = 'test'
|
||||
RETURNING last_updated_at, count;"""
|
||||
|
||||
async def get(self, test_id):
|
||||
result = await self.postgres_execute(self.GET_SQL, {'id': test_id})
|
||||
if not result.row_count:
|
||||
raise web.HTTPError(404, 'Not Found')
|
||||
await self.finish(self.cast_data(result.row))
|
||||
|
||||
async def post(self):
|
||||
body = json.loads(self.request.body.decode('utf-8'))
|
||||
async with self.postgres_transaction() as postgres:
|
||||
|
||||
# This should roll back on the second call to this endopoint
|
||||
self.application.first_txn = await postgres.execute(
|
||||
self.POST_SQL, {'id': str(uuid.uuid4()),
|
||||
'value': str(uuid.uuid4())})
|
||||
|
||||
# This should roll back on the second call to this endopoint
|
||||
count = await postgres.execute(self.UPDATE_COUNT_SQL)
|
||||
|
||||
# This will trigger an error on the second call to this endpoint
|
||||
user = await postgres.execute(self.POST_SQL, body)
|
||||
|
||||
await self.finish({
|
||||
'count': self.cast_data(count.row),
|
||||
'user': self.cast_data(user.row)})
|
||||
|
||||
|
||||
class Application(sprockets_postgres.ApplicationMixin,
|
||||
app.Application):
|
||||
|
||||
def __init__(self, *args, **kwargs):
|
||||
super().__init__(*args, **kwargs)
|
||||
self.influxdb = mock.Mock()
|
||||
self.record_timing = mock.Mock()
|
||||
self.first_txn: typing.Optional[sprockets_postgres.QueryResult] = None
|
||||
|
||||
|
||||
class TestCase(testing.SprocketsHttpTestCase):
|
||||
|
||||
@classmethod
|
||||
def setUpClass(cls):
|
||||
with open('build/test-environment') as f:
|
||||
for line in f:
|
||||
if line.startswith('export '):
|
||||
line = line[7:]
|
||||
name, _, value = line.strip().partition('=')
|
||||
os.environ[name] = value
|
||||
|
||||
def get_app(self):
|
||||
self.app = Application(handlers=[
|
||||
web.url('/callproc', CallprocRequestHandler),
|
||||
web.url('/count', CountRequestHandler),
|
||||
web.url('/error', ErrorRequestHandler),
|
||||
web.url('/error-passthrough', ErrorPassthroughRequestHandler),
|
||||
web.url('/execute', ExecuteRequestHandler),
|
||||
web.url('/influxdb', InfluxDBRequestHandler),
|
||||
web.url('/metrics-mixin', MetricsMixinRequestHandler),
|
||||
web.url('/multi-row', MultiRowRequestHandler),
|
||||
web.url('/no-error', NoErrorRequestHandler),
|
||||
web.url('/no-row', NoRowRequestHandler),
|
||||
web.url('/status', StatusRequestHandler),
|
||||
web.url('/transaction', TransactionRequestHandler),
|
||||
web.url('/transaction/(?P<test_id>.*)', TransactionRequestHandler)
|
||||
])
|
||||
return self.app
|
||||
|
||||
|
||||
class RequestHandlerMixinTestCase(TestCase):
|
||||
|
||||
def test_postgres_status(self):
|
||||
response = self.fetch('/status')
|
||||
data = json.loads(response.body)
|
||||
self.assertTrue(data['available'])
|
||||
self.assertGreaterEqual(data['pool_size'], 1)
|
||||
self.assertGreaterEqual(data['pool_free'], 1)
|
||||
|
||||
@mock.patch('aiopg.pool.Pool.acquire')
|
||||
def test_postgres_status_connect_error(self, acquire):
|
||||
acquire.side_effect = asyncio.TimeoutError()
|
||||
response = self.fetch('/status')
|
||||
self.assertEqual(response.code, 503)
|
||||
self.assertFalse(json.loads(response.body)['available'])
|
||||
|
||||
@mock.patch('aiopg.cursor.Cursor.execute')
|
||||
def test_postgres_status_error(self, execute):
|
||||
execute.side_effect = asyncio.TimeoutError()
|
||||
response = self.fetch('/status')
|
||||
self.assertEqual(response.code, 503)
|
||||
self.assertFalse(json.loads(response.body)['available'])
|
||||
|
||||
def test_postgres_callproc(self):
|
||||
response = self.fetch('/callproc')
|
||||
self.assertEqual(response.code, 200)
|
||||
self.assertIsInstance(
|
||||
uuid.UUID(json.loads(response.body)['value']), uuid.UUID)
|
||||
|
||||
@mock.patch('aiopg.cursor.Cursor.execute')
|
||||
def test_postgres_error(self, execute):
|
||||
execute.side_effect = asyncio.TimeoutError
|
||||
response = self.fetch('/error')
|
||||
self.assertEqual(response.code, 500)
|
||||
self.assertIn(b'Internal Server Error', response.body)
|
||||
|
||||
@mock.patch('aiopg.pool.Pool.acquire')
|
||||
def test_postgres_error_on_connect(self, acquire):
|
||||
acquire.side_effect = asyncio.TimeoutError
|
||||
response = self.fetch('/error')
|
||||
self.assertEqual(response.code, 500)
|
||||
self.assertIn(b'Internal Server Error', response.body)
|
||||
|
||||
def test_postgres_error_passthrough(self):
|
||||
response = self.fetch('/error-passthrough')
|
||||
self.assertEqual(response.code, 204)
|
||||
|
||||
def test_postgres_execute(self):
|
||||
expectation = str(uuid.uuid4())
|
||||
response = self.fetch('/execute?value={}'.format(expectation))
|
||||
self.assertEqual(response.code, 200)
|
||||
self.assertEqual(json.loads(response.body)['value'], expectation)
|
||||
|
||||
def test_postgres_execute_with_timeout(self):
|
||||
expectation = str(uuid.uuid4())
|
||||
response = self.fetch(
|
||||
'/execute?value={}&timeout=5'.format(expectation))
|
||||
self.assertEqual(response.code, 200)
|
||||
self.assertEqual(json.loads(response.body)['value'], expectation)
|
||||
|
||||
def test_postgres_influxdb(self):
|
||||
expectation = str(uuid.uuid4())
|
||||
response = self.fetch(
|
||||
'/influxdb?value={}'.format(expectation))
|
||||
self.assertEqual(response.code, 200)
|
||||
self.assertEqual(json.loads(response.body)['value'], expectation)
|
||||
self.app.influxdb.set_field.assert_called_once()
|
||||
|
||||
def test_postgres_metrics_mixin(self):
|
||||
expectation = str(uuid.uuid4())
|
||||
response = self.fetch(
|
||||
'/metrics-mixin?value={}'.format(expectation))
|
||||
self.assertEqual(response.code, 200)
|
||||
self.assertEqual(json.loads(response.body)['value'], expectation)
|
||||
self.app.record_timing.assert_called_once()
|
||||
|
||||
def test_postgres_multirow_get(self):
|
||||
response = self.fetch('/multi-row')
|
||||
self.assertEqual(response.code, 200)
|
||||
body = json.loads(response.body)
|
||||
self.assertEqual(body['count'], 5)
|
||||
self.assertIsInstance(body['rows'], list)
|
||||
|
||||
def test_postgres_multirow_no_data(self):
|
||||
for value in [True, False]:
|
||||
response = self.fetch(
|
||||
'/multi-row', method='POST', body=json.dumps({'value': value}))
|
||||
self.assertEqual(response.code, 200)
|
||||
body = json.loads(response.body)
|
||||
self.assertEqual(body['count'], 5)
|
||||
self.assertIsNone(body['rows'])
|
||||
|
||||
def test_postgres_norow(self):
|
||||
response = self.fetch('/no-row')
|
||||
self.assertEqual(response.code, 200)
|
||||
body = json.loads(response.body)
|
||||
self.assertEqual(body['count'], 0)
|
||||
self.assertIsNone(body['rows'])
|
||||
|
||||
@mock.patch('aiopg.cursor.Cursor.execute')
|
||||
def test_postgres_execute_timeout_error(self, execute):
|
||||
execute.side_effect = asyncio.TimeoutError()
|
||||
response = self.fetch('/execute?value=1')
|
||||
self.assertEqual(response.code, 500)
|
||||
self.assertIn(b'Query Timeout', response.body)
|
||||
|
||||
@mock.patch('aiopg.cursor.Cursor.execute')
|
||||
def test_postgres_execute_unique_violation(self, execute):
|
||||
execute.side_effect = errors.UniqueViolation()
|
||||
response = self.fetch('/execute?value=1')
|
||||
self.assertEqual(response.code, 409)
|
||||
self.assertIn(b'Unique Violation', response.body)
|
||||
|
||||
@mock.patch('aiopg.cursor.Cursor.execute')
|
||||
def test_postgres_execute_error(self, execute):
|
||||
execute.side_effect = psycopg2.Error()
|
||||
response = self.fetch('/execute?value=1')
|
||||
self.assertEqual(response.code, 500)
|
||||
self.assertIn(b'Database Error', response.body)
|
||||
|
||||
@mock.patch('aiopg.cursor.Cursor.fetchone')
|
||||
def test_postgres_programming_error(self, fetchone):
|
||||
fetchone.side_effect = psycopg2.ProgrammingError()
|
||||
response = self.fetch('/execute?value=1')
|
||||
self.assertEqual(response.code, 200)
|
||||
self.assertIsNone(json.loads(response.body)['value'])
|
||||
|
||||
@mock.patch('aiopg.connection.Connection.cursor')
|
||||
def test_postgres_cursor_raises(self, cursor):
|
||||
cursor.side_effect = asyncio.TimeoutError()
|
||||
response = self.fetch('/execute?value=1')
|
||||
self.assertEqual(response.code, 503)
|
||||
|
||||
|
||||
class TransactionTestCase(TestCase):
|
||||
|
||||
def test_transactions(self):
|
||||
test_body = {
|
||||
'id': str(uuid.uuid4()),
|
||||
'value': str(uuid.uuid4())
|
||||
}
|
||||
response = self.fetch(
|
||||
'/transaction', method='POST', body=json.dumps(test_body))
|
||||
self.assertEqual(response.code, 200)
|
||||
record = json.loads(response.body.decode('utf-8'))
|
||||
self.assertEqual(record['user']['id'], test_body['id'])
|
||||
self.assertEqual(record['user']['value'], test_body['value'])
|
||||
count = record['count']['count']
|
||||
last_updated = record['count']['last_updated_at']
|
||||
|
||||
response = self.fetch(
|
||||
'/transaction', method='POST', body=json.dumps(test_body))
|
||||
self.assertEqual(response.code, 409)
|
||||
|
||||
response = self.fetch(
|
||||
'/transaction/{}'.format(self.app.first_txn.row['id']))
|
||||
self.assertEqual(response.code, 404)
|
||||
|
||||
response = self.fetch('/count')
|
||||
self.assertEqual(response.code, 200)
|
||||
record = json.loads(response.body.decode('utf-8'))
|
||||
self.assertEqual(record['count'], count)
|
||||
self.assertEqual(record['last_updated_at'], last_updated)
|
||||
|
||||
|
||||
class MissingURLTestCase(unittest.TestCase):
|
||||
|
||||
@classmethod
|
||||
def setUpClass(cls):
|
||||
with open('build/test-environment') as f:
|
||||
for line in f:
|
||||
if line.startswith('export '):
|
||||
line = line[7:]
|
||||
name, _, value = line.strip().partition('=')
|
||||
if name != 'POSTGRES_URL':
|
||||
os.environ[name] = value
|
||||
if 'POSTGRES_URL' in os.environ:
|
||||
del os.environ['POSTGRES_URL']
|
||||
|
||||
def test_that_stop_is_invoked(self):
|
||||
io_loop = ioloop.IOLoop.current()
|
||||
obj = Application()
|
||||
obj.stop = mock.Mock(wraps=obj.stop)
|
||||
obj.start(io_loop)
|
||||
io_loop.start()
|
||||
obj.stop.assert_called_once()
|
||||
Loading…
Reference in a new issue