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Postgres: Add 9.5-9.6 config, update pgtune #79

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merged 6 commits into from
Feb 21, 2017
Merged

Postgres: Add 9.5-9.6 config, update pgtune #79

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3701d1c
postgres: Use explicit version to install.
andreif Apr 8, 2016
8c95431
postgres: Add config for 9.5.
andreif Apr 8, 2016
4439c72
postgres: Use new pgtune from github.
andreif Apr 8, 2016
4676fa8
postgres: Specify pg version in each task.
andreif Apr 8, 2016
d0e2a7c
postgres: Update generate_pgtune_conf for new pgtune.
andreif Apr 13, 2016
bf3813c
postgres: Add config for 9.6.
andreif Oct 24, 2016
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68 changes: 45 additions & 23 deletions blues/postgres.py
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Original file line number Diff line number Diff line change
Expand Up @@ -35,20 +35,25 @@
from . import debian

__all__ = ['start', 'stop', 'restart', 'reload', 'setup', 'configure',
'setup_schemas', 'generate_pgtune_conf', 'dump']
'setup_schemas', 'generate_pgtune_conf', 'dump', 'install',
'download_pgtune', 'stop_all']


blueprint = blueprints.get(__name__)

start = debian.service_task('postgresql', 'start')
stop = debian.service_task('postgresql', 'stop')
restart = debian.service_task('postgresql', 'restart')
reload = debian.service_task('postgresql', 'reload')

version = lambda: blueprint.get('version', '9.1')

start = debian.service_task('postgresql', 'start %s' % version())
stop = debian.service_task('postgresql', 'stop %s' % version())
stop_all = debian.service_task('postgresql', 'stop')
restart = debian.service_task('postgresql', 'restart %s' % version())
reload = debian.service_task('postgresql', 'reload %s' % version())

postgres_root = lambda *a: os.path.join('/etc/postgresql/{}/main/'.format(version()), *a)
pgtune_root = '/usr/local/src/pgtune'


@task
def install(add_repo=None):
with sudo():
v = version()
Expand All @@ -59,11 +64,25 @@ def install(add_repo=None):
add_repository()

debian.apt_get('install',
'postgresql',
'postgresql-{}'.format(v),
'postgresql-server-dev-{}'.format(v),
'libpq-dev',
'postgresql-contrib-{}'.format(v),
'pgtune')
)
download_pgtune()


@task
def download_pgtune():
run('rm -r {} || true'.format(pgtune_root))
run('mkdir -p {}'.format(pgtune_root))

run('curl https://codeload.github.com/andreif/pgtune/legacy.tar.gz/'
'allthethings | tar xzv -C {} --strip=1'.format(pgtune_root))

run('python {}/pgtune --doctest --help'.format(pgtune_root))

info('Downloaded pgtune to {}/'.format(pgtune_root))


def add_repository():
Expand All @@ -83,6 +102,7 @@ def install_postgis(v=None):
debian.apt_get('install', 'postgis',
'postgresql-{}-postgis-scripts'.format(v))


@task
def setup():
"""
Expand Down Expand Up @@ -205,35 +225,37 @@ def generate_pgtune_conf(role='db', **options):

:param role: Which fabric role to place local pgtune.conf template under
"""
info('Generating pgtune conf')

options.setdefault('type', 'Web')
options.setdefault('version', version())
options.setdefault('input-config', postgres_root('postgresql.conf'))
options.setdefault('settings', pgtune_root)

options = ' '.join(
'--{}="{}"'.format(key, value)
for key, value in options.items()
)

conf_path = postgres_root('postgresql.conf')
with sudo(), silent():
output = run('pgtune {} -i {}'.format(options, conf_path)).strip()
info('options: ' + options)
output = run('{}/pgtune {}'.format(pgtune_root, options)).strip()
output = output.rpartition('\n# pgtune')[2].partition('\n')[2]

def parse(c):
lines = [l for l in c.splitlines() if '# pgtune' in l]
for line in lines:
try:
comment = line.index('#')
line = line[:comment]
except ValueError:
pass
clean = lambda s: s.strip('\n\r\t\'" ')
key, _, value = line.partition('=')
key, value = map(clean, (key, value))
if key:
yield key, value or None
for line in c.splitlines():
line = line.split('#')[0].strip()
if line:
clean = lambda s: s.strip('\n\r\t\'" ')
key, _, value = line.partition('=')
key, value = map(clean, (key, value))
if key:
yield key, value or None

tune_conf = dict(parse(output))
tune_conf.update(blueprint.get('pgtune', {}))
tune_conf = '\n'.join(' = '.join(item)
for item in tune_conf.iteritems())
for item in sorted(tune_conf.iteritems()))
conf_dir = os.path.join(
os.path.dirname(env['real_fabfile']),
'templates',
Expand Down
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