Add PostGIS initialization to installation process

While installing, I see this error when the manage.py db upgrade command is run. Should I be doing something differently?

+ ./venv/bin/python3.6 manage.py db upgrade
##################### loading env
manage.py:34: UserWarning: Homepage counters not initialized.
  warnings.warn('Homepage counters not initialized.')
INFO  [alembic.runtime.migration] Context impl PostgresqlImpl.
INFO  [alembic.runtime.migration] Will assume transactional DDL.
INFO  [alembic.runtime.migration] Running upgrade  -> 8aa8f8d6a0c3, empty message
Traceback (most recent call last):
  File "/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1182, in _execute_context
    context)
  File "/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 470, in do_execute
    cursor.execute(statement, parameters)
psycopg2.ProgrammingError: type "geometry" does not exist
LINE 4:  geometry geometry(MULTIPOLYGON,4326),
                  ^


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "manage.py", line 59, in <module>
    manager.run()
  File "/tasking-manager/venv/lib/python3.6/site-packages/flask_script/__init__.py", line 412, in run
    result = self.handle(sys.argv[0], sys.argv[1:])
  File "/tasking-manager/venv/lib/python3.6/site-packages/flask_script/__init__.py", line 383, in handle
    res = handle(*args, **config)
  File "/tasking-manager/venv/lib/python3.6/site-packages/flask_script/commands.py", line 216, in __call__
    return self.run(*args, **kwargs)
  File "/tasking-manager/venv/lib/python3.6/site-packages/flask_migrate/__init__.py", line 247, in upgrade
    command.upgrade(config, revision, sql=sql, tag=tag)
  File "/tasking-manager/venv/lib/python3.6/site-packages/alembic/command.py", line 254, in upgrade
    script.run_env()
  File "/tasking-manager/venv/lib/python3.6/site-packages/alembic/script/base.py", line 421, in run_env
    util.load_python_file(self.dir, 'env.py')
  File "/tasking-manager/venv/lib/python3.6/site-packages/alembic/util/pyfiles.py", line 93, in load_python_file
    module = load_module_py(module_id, path)
  File "/tasking-manager/venv/lib/python3.6/site-packages/alembic/util/compat.py", line 64, in load_module_py
    module_id, path).load_module(module_id)
  File "<frozen importlib._bootstrap_external>", line 399, in _check_name_wrapper
  File "<frozen importlib._bootstrap_external>", line 823, in load_module
  File "<frozen importlib._bootstrap_external>", line 682, in load_module
  File "<frozen importlib._bootstrap>", line 265, in _load_module_shim
  File "<frozen importlib._bootstrap>", line 684, in _load
  File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "migrations/env.py", line 99, in <module>
    run_migrations_online()
  File "migrations/env.py", line 92, in run_migrations_online
    context.run_migrations()
  File "<string>", line 8, in run_migrations
  File "/tasking-manager/venv/lib/python3.6/site-packages/alembic/runtime/environment.py", line 817, in run_migrations
    self.get_context().run_migrations(**kw)
  File "/tasking-manager/venv/lib/python3.6/site-packages/alembic/runtime/migration.py", line 329, in run_migrations
    step.migration_fn(**kw)
  File "/tasking-manager/migrations/versions/8aa8f8d6a0c3_.py", line 27, in upgrade
    sa.PrimaryKeyConstraint('id')
  File "<string>", line 8, in create_table
  File "<string>", line 3, in create_table
  File "/tasking-manager/venv/lib/python3.6/site-packages/alembic/operations/ops.py", line 1106, in create_table
    return operations.invoke(op)
  File "/tasking-manager/venv/lib/python3.6/site-packages/alembic/operations/base.py", line 318, in invoke
    return fn(self, operation)
  File "/tasking-manager/venv/lib/python3.6/site-packages/alembic/operations/toimpl.py", line 101, in create_table
    operations.impl.create_table(table)
  File "/tasking-manager/venv/lib/python3.6/site-packages/alembic/ddl/impl.py", line 194, in create_table
    self._exec(schema.CreateTable(table))
  File "/tasking-manager/venv/lib/python3.6/site-packages/alembic/ddl/impl.py", line 118, in _exec
    return conn.execute(construct, *multiparams, **params)
  File "/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 945, in execute
    return meth(self, multiparams, params)
  File "/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/sql/ddl.py", line 68, in _execute_on_connection
    return connection._execute_ddl(self, multiparams, params)
  File "/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1002, in _execute_ddl
    compiled
  File "/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1189, in _execute_context
    context)
  File "/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1402, in _handle_dbapi_exception
    exc_info
  File "/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/util/compat.py", line 203, in raise_from_cause
    reraise(type(exception), exception, tb=exc_tb, cause=cause)
  File "/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/util/compat.py", line 186, in reraise
    raise value.with_traceback(tb)
  File "/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1182, in _execute_context
    context)
  File "/tasking-manager/venv/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 470, in do_execute
    cursor.execute(statement, parameters)
sqlalchemy.exc.ProgrammingError: (psycopg2.ProgrammingError) type "geometry" does not exist
LINE 4:  geometry geometry(MULTIPOLYGON,4326),
                  ^
 [SQL: '\nCREATE TABLE areas_of_interest (\n\tid SERIAL NOT NULL, \n\tgeometry geometry(MULTIPOLYGON,4326), \n\tcentroid geometry(POINT,4326), \n\tPRIMARY KEY (id)\n)\n\n']

[JorgeMartinezG]

@arunasank the solution is to enable the extension. You need to connect to the database and run

CREATE EXTENSION postgis;
CREATE EXTENSION postgis_topology;

Then you run migrations again.

[JorgeMartinezG]

I think it is possible, one solution might be to add a command within manage.py to execute os-based commands for psql like

• os.system(‘psql -h host -p port -U tm -d postgres -c “CREATE DATABASE tasking-manager”’)
• os.system(‘psql -h host -p port -U tm -d tasking-manager -c “CREATE EXTENSION postgis”’)

Because they are shell commands, if you have the ability run them without python, would be better for debugging

Now, if you necessarily need to run the database creation with python manage.py db upgrade it would imply to create a new class in python which inherits from MigrateCommand class from flask-migrate module to include the commands above before executing original methods, using super. Like this:

https://github.com/boundlessgeo/registry/blob/master/registry.py#L561