Basic structure of the extension & package

CONTRIBUTING.md

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+# Contributing guide
+
+## How to add new functions
+
+Try to put as little logic in the SQL extension as possible and
+just use it as a wrapper to the Python module functionality.
+
+### Python
+
+...
+
+### SQL
+
+* Generate a **new subfolder version** for `sql` and `test` folders to define the new functions and tests
+  * Use symlinks to avoid file duplication between versions that don't update them
+  * Add or upgrade your SQL server functions
+  * Create tests for the client and server functions -- at least, to check that those are created
+
+* Generate the **upgrade and downgrade files** for the extension for both client and server
+
+* Update the control files and the Makefiles to generate the complete SQL file for the new created version
+  * These new version file (`crankshaft--X.Y.Z.sql`)
+    must be pushed and frozen. You should add it to the `.gitignore` file.
+
+* Update the public docs! ;-)
+
+## Naming things
+
+# SQL
+
+Use snake case (i.e. `snake_case` and not `CamelCase`) for all
+functions. Prefix functions intended for public use with `cdb_`
+and private functions (to be used only internally inside
+the extension)  with `_cdb_`.
+
+# Python
+
+...

DEPLOYING.md

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+# Deployment
+
+...
+
+Deployment
+
+```
+# Install python module
+sudo pip install {{path}}/python/crankshaft --upgrade
+
+# Install extension
+cd {{path}}/pg && sudo PGUSER=postgres make all install
+```
+
+Installing the extension in user databases:
+
+...

README.md

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 # crankshaft
+
+CartoDB Spatial Analysis extension for PostgreSQL.
+
+## Code organization
+
+* *pg* contains the PostgreSQL extension source code
+* *python* Python module
+
+FIXME: should it be `./extension` and `./lib/python' ?
+
+## Requirements
+
+* pip
+
+* sudo pip install nose
+* CREATE LANGUAGE 'plpythonu';

pg/.gitignore

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+dist/
+test/regression.diffs
+test/regression.out

pg/Makefile

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+EXTENSION    = crankshaft
+EXTVERSION   = $(shell grep default_version $(EXTENSION).control | sed -e "s/default_version[[:space:]]*=[[:space:]]*'\([^']*\)'/\1/")
+
+DATA         = dist/$(EXTENSION)--$(EXTVERSION).sql
+
+SOURCES_DATA_DIR = sql
+SOURCES_DATA = $(wildcard sql/$(EXTVERSION)/*.sql)
+
+dist/$(EXTENSION)--$(EXTVERSION).sql: $(SOURCES_DATA)
+	rm -f $@
+	cat $(SOURCES_DATA_DIR)/*.sql >> $@
+
+dist/$(EXTENSION).control: $(EXTENSION).control
+	cp $< $@
+
+REGRESS = $(notdir $(basename $(wildcard test/sql/*test.sql)))
+TEST_DIR = test
+REGRESS_OPTS = --inputdir='$(TEST_DIR)' --outputdir='$(TEST_DIR)'
+
+PG_CONFIG = pg_config
+PGXS := $(shell $(PG_CONFIG) --pgxs)
+include $(PGXS)

pg/README.md

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+
+# Running the tests:
+
+```
+sudo make install
+PGUSER=postgres make installcheck
+```

pg/crankshaft.control

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+comment = 'CartoDB Spatial Analysis extension'
+default_version = '0.0.1'
+requires = 'plpythonu'
+superuser = true
+schema = cdb_crankshaft

pg/sql/poc_xyz.sql

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+CREATE OR REPLACE FUNCTION cdb_poc_xyz()
+RETURNS Text AS $$
+    from crankshaft.poc import xyz
+    return xyz()
+$$ LANGUAGE plpythonu;

pg/test/expected/01_install_test.out

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+-- Install dependencies
+CREATE EXTENSION plpythonu;
+-- Install the extension
+CREATE EXTENSION crankshaft;

pg/test/expected/02_poc_xyz_test.out

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+SELECT cdb_crankshaft.cdb_poc_xyz();
+ cdb_poc_xyz 
+-------------
+ xyz-result
+(1 row)
+

pg/test/results/01_install_test.out

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+-- Install dependencies
+CREATE EXTENSION plpythonu;
+-- Install the extension
+CREATE EXTENSION crankshaft;

pg/test/results/02_poc_xyz_test.out

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+SELECT cdb_crankshaft.cdb_poc_xyz();
+ cdb_poc_xyz 
+-------------
+ xyz-result
+(1 row)
+

pg/test/sql/01_install_test.sql

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+-- Install dependencies
+CREATE EXTENSION plpythonu;
+
+-- Install the extension
+CREATE EXTENSION crankshaft;

pg/test/sql/02_poc_xyz_test.sql

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+SELECT cdb_crankshaft.cdb_poc_xyz();

python/.gitignore

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+*.pyc

python/README.md

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+# Crankshaft Python Package
+
+...
+### Run the tests
+
+```bash
+cd crankshaft
+nosetests test/
+```

python/crankshaft/crankshaft/__init__.py

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+import poc

python/crankshaft/crankshaft/poc/__init__.py

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+from xyz import *

python/crankshaft/crankshaft/poc/xyz.py

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+def xyz():
+    # print "XYZ"
+    return "xyz-result"

python/crankshaft/setup.py

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+
+"""
+CartoDB Spatial Analysis Python Library
+See:
+https://github.com/CartoDB/crankshaft
+"""
+
+from setuptools import setup, find_packages
+
+REQUIRES = [] # ['pysal','numpy']
+
+setup(
+    name='crankshaft',
+
+    version='0.0.01',
+
+    description='CartoDB Spatial Analysis Python Library',
+
+    url='https://github.com/CartoDB/crankshaft',
+
+    author='Data Services Team - CartoDB',
+    author_email='dataservices@cartodb.com',
+
+    license='MIT',
+
+    classifiers=[
+        'Development Status :: 1 - Planning',
+        'Intended Audience :: Mapping comunity',
+        'Topic :: Maps :: Mapping Tools',
+        'License :: OSI Approved :: MIT License',
+        'Programming Language :: Python :: 2.7',
+    ],
+
+    keywords='maps mapping tools spatial analysis geostatistics',
+
+    packages=find_packages(exclude=['contrib', 'docs', 'tests']),
+
+    extras_require={
+        'dev': ['unittest'],
+        'test': ['unittest', 'nose', 'mockredispy', 'mock'],
+    },
+
+    # install_requires=REQUIRES,
+
+     # requires=REQUIRES,
+
+     test_suite='test'
+)

python/crankshaft/test/test_poc.py

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+#!/usr/local/bin/python
+# -*- coding: utf-8 -*-
+
+import unittest
+import crankshaft
+
+class TestPoc(unittest.TestCase):
+    def test_should_have_xyz(self):
+        assert crankshaft.poc.xyz() == "xyz-result"