def ensure_db_relation_resources(rel):
"""Create the database resources needed for the relation."""
master = rel.local
if "password" not in master:
return
hookenv.log("Ensuring database {!r} and user {!r} exist for {}" "".format(master["database"], master["user"], rel))
# First create the database, if it isn't already.
postgresql.ensure_database(master["database"])
# Next, connect to the database to create the rest in a transaction.
con = postgresql.connect(database=master["database"])
superuser, replication = _credential_types(rel)
postgresql.ensure_user(
con,
master["user"],
master["password"],
superuser=superuser,
replication=replication,
)
if not superuser:
postgresql.ensure_user(con, master["schema_user"], master["schema_password"])
# Grant specified privileges on the database to the user. This comes
# from the PostgreSQL service configuration, as allowing the
# relation to specify how much access it gets is insecure.
config = hookenv.config()
privs = set(filter(None, config["relation_database_privileges"].split(",")))
postgresql.grant_database_privileges(con, master["user"], master["database"], privs)
if not superuser:
postgresql.grant_database_privileges(con, master["schema_user"], master["database"], privs)
# Reset the roles granted to the user as requested.
if "roles" in master:
roles = filter(None, master.get("roles", "").split(","))
postgresql.grant_user_roles(con, master["user"], roles)
# Create requested extensions. We never drop extensions, as there
# may be dependent objects.
if "extensions" in master:
extensions = list(filter(None, master.get("extensions", "").split(",")))
# Convert to the (extension, schema) tuple expected by
# postgresql.ensure_extensions
for i in range(0, len(extensions)):
m = re.search(r"^\s*([^(\s]+)\s*(?:\((\w+)\))?", extensions[i])
if m is None:
raise RuntimeError("Invalid extension {}".format(extensions[i]))
extensions[i] = (m.group(1), m.group(2) or "public")
postgresql.ensure_extensions(con, extensions)
con.commit() # Don't throw away our changes.
def test_grant_database_privileges(self):
con = MagicMock()
cur = con.cursor()
privs = ['privA', 'privB']
postgresql.grant_database_privileges(con, 'a_Role', 'a_DB', privs)
cur.execute.assert_has_calls([
call(
"GRANT %s ON DATABASE %s TO %s",
(
postgresql.AsIs('privA'), # Unquoted. Its a keyword.
postgresql.AsIs('"a_DB"'),
postgresql.AsIs('"a_Role"'))),
call("GRANT %s ON DATABASE %s TO %s",
(postgresql.AsIs('privB'), postgresql.AsIs('"a_DB"'),
postgresql.AsIs('"a_Role"')))
])
def ensure_db_relation_resources(rel):
"""Create the database resources needed for the relation."""
master = rel.local
hookenv.log("Ensuring database {!r} and user {!r} exist for {}" "".format(master["database"], master["user"], rel))
# First create the database, if it isn't already.
postgresql.ensure_database(master["database"])
# Next, connect to the database to create the rest in a transaction.
con = postgresql.connect(database=master["database"])
superuser, replication = _credential_types(rel)
postgresql.ensure_user(con, master["user"], master["password"], superuser=superuser, replication=replication)
if not superuser:
postgresql.ensure_user(con, master["schema_user"], master["schema_password"])
# Grant specified privileges on the database to the user. This comes
# from the PostgreSQL service configuration, as allowing the
# relation to specify how much access it gets is insecure.
config = hookenv.config()
privs = set(filter(None, config["relation_database_privileges"].split(",")))
postgresql.grant_database_privileges(con, master["user"], master["database"], privs)
if not superuser:
postgresql.grant_database_privileges(con, master["schema_user"], master["database"], privs)
# Reset the roles granted to the user as requested.
if "roles" in master:
roles = filter(None, master.get("roles", "").split(","))
postgresql.grant_user_roles(con, master["user"], roles)
# Create requested extensions. We never drop extensions, as there
# may be dependent objects.
if "extensions" in master:
extensions = filter(None, master.get("extensions", "").split(","))
postgresql.ensure_extensions(con, extensions)
con.commit() # Don't throw away our changes.
def test_grant_database_privileges(self):
con = MagicMock()
cur = con.cursor()
privs = ["privA", "privB"]
postgresql.grant_database_privileges(con, "a_Role", "a_DB", privs)
cur.execute.assert_has_calls(
[
call(
"GRANT %s ON DATABASE %s TO %s",
(
postgresql.AsIs("privA"), # Unquoted. Its a keyword.
postgresql.AsIs('"a_DB"'),
postgresql.AsIs('"a_Role"'),
),
),
call(
"GRANT %s ON DATABASE %s TO %s",
(postgresql.AsIs("privB"), postgresql.AsIs('"a_DB"'), postgresql.AsIs('"a_Role"')),
),
]
)
