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Diffstat (limited to 'firehose/config.py')
-rw-r--r-- | firehose/config.py | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/firehose/config.py b/firehose/config.py new file mode 100644 index 0000000..be034fe --- /dev/null +++ b/firehose/config.py @@ -0,0 +1,48 @@ +# Copyright (C) 2014 Codethink Limited +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program; if not, write to the Free Software Foundation, Inc., +# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +import yaml + +class FirehoseConfigError(Exception): + def __init__(self, config, what, path): + self.config = config + self.what = what + self.path = path + + def __repr__(self): + return "<FirehoseConfigError %s: %s (@ %s)>" % ( + self.config.sourcename, self.what, (".").join(self.path)) + + def __str__(self): + return repr(self) + +class FirehoseConfig: + def __init__(self, sourcename, readfrom): + self.sourcename = sourcename + self.content = yaml.safe_load(readfrom) + assert(self.content.get("kind") == "firehose") + + def __getattr__(self, attrname): + attrpath = attrname.split("_") + node = self.content + pathused = [] + while attrpath: + elem = attrpath.pop(0) + pathused.append(elem) + if node.get(elem) is None: + raise FirehoseConfigError(self, "Unknown element", pathused) + else: + node = node.get(elem) + return node |