mirror of
https://github.com/esphome/esphome.git
synced 2024-11-14 02:58:11 +01:00
457 lines
16 KiB
Python
457 lines
16 KiB
Python
from __future__ import print_function
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import fnmatch
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import functools
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import logging
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import math
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import os
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import uuid
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import yaml
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import yaml.constructor
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from esphome import core
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from esphome.config_helpers import read_config_file
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from esphome.core import EsphomeError, IPAddress, Lambda, MACAddress, TimePeriod, DocumentRange
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from esphome.py_compat import text_type, IS_PY2
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from esphome.util import OrderedDict, filter_yaml_files
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_LOGGER = logging.getLogger(__name__)
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# Mostly copied from Home Assistant because that code works fine and
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# let's not reinvent the wheel here
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SECRET_YAML = u'secrets.yaml'
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_SECRET_CACHE = {}
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_SECRET_VALUES = {}
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class NodeListClass(list):
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pass
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class NodeStrClass(text_type):
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pass
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class ESPHomeDataBase(object):
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@property
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def esp_range(self):
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return getattr(self, '_esp_range', None)
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def from_node(self, node):
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# pylint: disable=attribute-defined-outside-init
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self._esp_range = DocumentRange.from_marks(node.start_mark, node.end_mark)
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class ESPInt(int, ESPHomeDataBase):
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pass
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class ESPFloat(float, ESPHomeDataBase):
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pass
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class ESPStr(str, ESPHomeDataBase):
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pass
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class ESPDict(OrderedDict, ESPHomeDataBase):
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pass
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class ESPList(list, ESPHomeDataBase):
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pass
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class ESPLambda(Lambda, ESPHomeDataBase):
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pass
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ESP_TYPES = {
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int: ESPInt,
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float: ESPFloat,
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str: ESPStr,
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dict: ESPDict,
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list: ESPList,
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Lambda: ESPLambda,
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}
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if IS_PY2:
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class ESPUnicode(unicode, ESPHomeDataBase):
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pass
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ESP_TYPES[unicode] = ESPUnicode
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def make_data_base(value):
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for typ, cons in ESP_TYPES.items():
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if isinstance(value, typ):
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return cons(value)
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return value
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def _add_data_ref(fn):
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@functools.wraps(fn)
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def wrapped(loader, node):
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res = fn(loader, node)
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res = make_data_base(res)
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if isinstance(res, ESPHomeDataBase):
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res.from_node(node)
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return res
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return wrapped
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class ESPHomeLoader(yaml.SafeLoader): # pylint: disable=too-many-ancestors
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"""Loader class that keeps track of line numbers."""
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@_add_data_ref
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def construct_yaml_int(self, node):
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return super(ESPHomeLoader, self).construct_yaml_int(node)
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@_add_data_ref
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def construct_yaml_float(self, node):
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return super(ESPHomeLoader, self).construct_yaml_float(node)
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@_add_data_ref
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def construct_yaml_binary(self, node):
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return super(ESPHomeLoader, self).construct_yaml_binary(node)
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@_add_data_ref
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def construct_yaml_omap(self, node):
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return super(ESPHomeLoader, self).construct_yaml_omap(node)
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@_add_data_ref
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def construct_yaml_str(self, node):
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return super(ESPHomeLoader, self).construct_yaml_str(node)
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@_add_data_ref
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def construct_yaml_seq(self, node):
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return super(ESPHomeLoader, self).construct_yaml_seq(node)
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def custom_flatten_mapping(self, node):
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pre_merge = []
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post_merge = []
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index = 0
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while index < len(node.value):
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if isinstance(node.value[index], yaml.ScalarNode):
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index += 1
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continue
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key_node, value_node = node.value[index]
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if key_node.tag == u'tag:yaml.org,2002:merge':
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del node.value[index]
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if isinstance(value_node, yaml.MappingNode):
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self.custom_flatten_mapping(value_node)
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node.value = node.value[:index] + value_node.value + node.value[index:]
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elif isinstance(value_node, yaml.SequenceNode):
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submerge = []
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for subnode in value_node.value:
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if not isinstance(subnode, yaml.MappingNode):
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raise yaml.constructor.ConstructorError(
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"while constructing a mapping", node.start_mark,
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"expected a mapping for merging, but found %{}".format(subnode.id),
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subnode.start_mark)
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self.custom_flatten_mapping(subnode)
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submerge.append(subnode.value)
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# submerge.reverse()
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node.value = node.value[:index] + submerge + node.value[index:]
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elif isinstance(value_node, yaml.ScalarNode):
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node.value = node.value[:index] + [value_node] + node.value[index:]
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# post_merge.append(value_node)
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else:
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raise yaml.constructor.ConstructorError(
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"while constructing a mapping", node.start_mark,
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"expected a mapping or list of mappings for merging, "
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"but found {}".format(value_node.id), value_node.start_mark)
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elif key_node.tag == u'tag:yaml.org,2002:value':
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key_node.tag = u'tag:yaml.org,2002:str'
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index += 1
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else:
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index += 1
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if pre_merge:
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node.value = pre_merge + node.value
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if post_merge:
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node.value = node.value + post_merge
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def custom_construct_pairs(self, node):
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pairs = []
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for kv in node.value:
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if isinstance(kv, yaml.ScalarNode):
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obj = self.construct_object(kv)
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if not isinstance(obj, dict):
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raise EsphomeError(
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"Expected mapping for anchored include tag, got {}".format(type(obj)))
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for key, value in obj.items():
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pairs.append((key, value))
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else:
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key_node, value_node = kv
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key = self.construct_object(key_node)
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value = self.construct_object(value_node)
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pairs.append((key, value))
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return pairs
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@_add_data_ref
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def construct_yaml_map(self, node):
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self.custom_flatten_mapping(node)
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nodes = self.custom_construct_pairs(node)
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seen = {}
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for (key, _), nv in zip(nodes, node.value):
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if isinstance(nv, yaml.ScalarNode):
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line = nv.start_mark.line
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else:
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line = nv[0].start_mark.line
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try:
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hash(key)
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except TypeError:
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raise yaml.MarkedYAMLError(
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context="invalid key: \"{}\"".format(key),
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context_mark=yaml.Mark(self.name, 0, line, -1, None, None)
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)
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if key in seen:
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raise yaml.MarkedYAMLError(
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context="duplicate key: \"{}\"".format(key),
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context_mark=yaml.Mark(self.name, 0, line, -1, None, None)
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)
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seen[key] = line
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return OrderedDict(nodes)
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@_add_data_ref
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def construct_env_var(self, node):
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args = node.value.split()
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# Check for a default value
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if len(args) > 1:
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return os.getenv(args[0], u' '.join(args[1:]))
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if args[0] in os.environ:
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return os.environ[args[0]]
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raise yaml.MarkedYAMLError(
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context=u"Environment variable '{}' not defined".format(node.value),
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context_mark=node.start_mark
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)
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@property
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def _directory(self):
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return os.path.dirname(self.name)
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def _rel_path(self, *args):
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return os.path.join(self._directory, *args)
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@_add_data_ref
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def construct_secret(self, node):
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secrets = _load_yaml_internal(self._rel_path(SECRET_YAML))
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if node.value not in secrets:
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raise yaml.MarkedYAMLError(
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context=u"Secret '{}' not defined".format(node.value),
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context_mark=node.start_mark
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)
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val = secrets[node.value]
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_SECRET_VALUES[text_type(val)] = node.value
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return val
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@_add_data_ref
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def construct_include(self, node):
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return _load_yaml_internal(self._rel_path(node.value))
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@_add_data_ref
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def construct_include_dir_list(self, node):
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files = filter_yaml_files(_find_files(self._rel_path(node.value), '*.yaml'))
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return [_load_yaml_internal(f) for f in files]
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@_add_data_ref
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def construct_include_dir_merge_list(self, node):
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files = filter_yaml_files(_find_files(self._rel_path(node.value), '*.yaml'))
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merged_list = []
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for fname in files:
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loaded_yaml = _load_yaml_internal(fname)
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if isinstance(loaded_yaml, list):
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merged_list.extend(loaded_yaml)
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return merged_list
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@_add_data_ref
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def construct_include_dir_named(self, node):
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files = filter_yaml_files(_find_files(self._rel_path(node.value), '*.yaml'))
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mapping = OrderedDict()
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for fname in files:
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filename = os.path.splitext(os.path.basename(fname))[0]
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mapping[filename] = _load_yaml_internal(fname)
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return mapping
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@_add_data_ref
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def construct_include_dir_merge_named(self, node):
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files = filter_yaml_files(_find_files(self._rel_path(node.value), '*.yaml'))
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mapping = OrderedDict()
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for fname in files:
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loaded_yaml = _load_yaml_internal(fname)
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if isinstance(loaded_yaml, dict):
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mapping.update(loaded_yaml)
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return mapping
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@_add_data_ref
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def construct_lambda(self, node):
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return Lambda(text_type(node.value))
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ESPHomeLoader.add_constructor(u'tag:yaml.org,2002:int', ESPHomeLoader.construct_yaml_int)
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ESPHomeLoader.add_constructor(u'tag:yaml.org,2002:float', ESPHomeLoader.construct_yaml_float)
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ESPHomeLoader.add_constructor(u'tag:yaml.org,2002:binary', ESPHomeLoader.construct_yaml_binary)
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ESPHomeLoader.add_constructor(u'tag:yaml.org,2002:omap', ESPHomeLoader.construct_yaml_omap)
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ESPHomeLoader.add_constructor(u'tag:yaml.org,2002:str', ESPHomeLoader.construct_yaml_str)
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ESPHomeLoader.add_constructor(u'tag:yaml.org,2002:seq', ESPHomeLoader.construct_yaml_seq)
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ESPHomeLoader.add_constructor(u'tag:yaml.org,2002:map', ESPHomeLoader.construct_yaml_map)
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ESPHomeLoader.add_constructor('!env_var', ESPHomeLoader.construct_env_var)
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ESPHomeLoader.add_constructor('!secret', ESPHomeLoader.construct_secret)
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ESPHomeLoader.add_constructor('!include', ESPHomeLoader.construct_include)
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ESPHomeLoader.add_constructor('!include_dir_list', ESPHomeLoader.construct_include_dir_list)
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ESPHomeLoader.add_constructor('!include_dir_merge_list',
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ESPHomeLoader.construct_include_dir_merge_list)
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ESPHomeLoader.add_constructor('!include_dir_named', ESPHomeLoader.construct_include_dir_named)
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ESPHomeLoader.add_constructor('!include_dir_merge_named',
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ESPHomeLoader.construct_include_dir_merge_named)
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ESPHomeLoader.add_constructor('!lambda', ESPHomeLoader.construct_lambda)
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def load_yaml(fname):
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_SECRET_VALUES.clear()
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_SECRET_CACHE.clear()
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return _load_yaml_internal(fname)
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def _load_yaml_internal(fname):
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content = read_config_file(fname)
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loader = ESPHomeLoader(content)
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loader.name = fname
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try:
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return loader.get_single_data() or OrderedDict()
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except yaml.YAMLError as exc:
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raise EsphomeError(exc)
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finally:
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loader.dispose()
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def dump(dict_):
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"""Dump YAML to a string and remove null."""
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return yaml.dump(dict_, default_flow_style=False, allow_unicode=True,
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Dumper=ESPHomeDumper)
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def _is_file_valid(name):
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"""Decide if a file is valid."""
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return not name.startswith(u'.')
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def _find_files(directory, pattern):
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"""Recursively load files in a directory."""
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for root, dirs, files in os.walk(directory, topdown=True):
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dirs[:] = [d for d in dirs if _is_file_valid(d)]
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for basename in files:
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if _is_file_valid(basename) and fnmatch.fnmatch(basename, pattern):
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filename = os.path.join(root, basename)
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yield filename
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def is_secret(value):
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try:
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return _SECRET_VALUES[text_type(value)]
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except (KeyError, ValueError):
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return None
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class ESPHomeDumper(yaml.SafeDumper): # pylint: disable=too-many-ancestors
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def represent_mapping(self, tag, mapping, flow_style=None):
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value = []
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node = yaml.MappingNode(tag, value, flow_style=flow_style)
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if self.alias_key is not None:
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self.represented_objects[self.alias_key] = node
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best_style = True
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if hasattr(mapping, 'items'):
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mapping = list(mapping.items())
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for item_key, item_value in mapping:
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node_key = self.represent_data(item_key)
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node_value = self.represent_data(item_value)
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if not (isinstance(node_key, yaml.ScalarNode) and not node_key.style):
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best_style = False
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if not (isinstance(node_value, yaml.ScalarNode) and not node_value.style):
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best_style = False
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value.append((node_key, node_value))
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if flow_style is None:
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if self.default_flow_style is not None:
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node.flow_style = self.default_flow_style
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else:
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node.flow_style = best_style
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return node
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def represent_secret(self, value):
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return self.represent_scalar(tag=u'!secret', value=_SECRET_VALUES[text_type(value)])
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def represent_stringify(self, value):
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if is_secret(value):
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return self.represent_secret(value)
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return self.represent_scalar(tag=u'tag:yaml.org,2002:str', value=text_type(value))
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# pylint: disable=arguments-differ
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def represent_bool(self, value):
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return self.represent_scalar(u'tag:yaml.org,2002:bool', u'true' if value else u'false')
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def represent_int(self, value):
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if is_secret(value):
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return self.represent_secret(value)
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return self.represent_scalar(tag=u'tag:yaml.org,2002:int', value=text_type(value))
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def represent_float(self, value):
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if is_secret(value):
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return self.represent_secret(value)
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if math.isnan(value):
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value = u'.nan'
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elif math.isinf(value):
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value = u'.inf' if value > 0 else u'-.inf'
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else:
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value = text_type(repr(value)).lower()
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# Note that in some cases `repr(data)` represents a float number
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# without the decimal parts. For instance:
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# >>> repr(1e17)
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# '1e17'
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# Unfortunately, this is not a valid float representation according
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# to the definition of the `!!float` tag. We fix this by adding
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# '.0' before the 'e' symbol.
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if u'.' not in value and u'e' in value:
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value = value.replace(u'e', u'.0e', 1)
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return self.represent_scalar(tag=u'tag:yaml.org,2002:float', value=value)
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def represent_lambda(self, value):
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if is_secret(value.value):
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return self.represent_secret(value.value)
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return self.represent_scalar(tag='!lambda', value=value.value, style='|')
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def represent_id(self, value):
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if is_secret(value.id):
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return self.represent_secret(value.id)
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return self.represent_stringify(value.id)
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ESPHomeDumper.add_multi_representer(
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dict,
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lambda dumper, value: dumper.represent_mapping('tag:yaml.org,2002:map', value)
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)
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ESPHomeDumper.add_multi_representer(
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list,
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lambda dumper, value: dumper.represent_sequence('tag:yaml.org,2002:seq', value)
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)
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ESPHomeDumper.add_multi_representer(bool, ESPHomeDumper.represent_bool)
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ESPHomeDumper.add_multi_representer(str, ESPHomeDumper.represent_stringify)
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ESPHomeDumper.add_multi_representer(int, ESPHomeDumper.represent_int)
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ESPHomeDumper.add_multi_representer(float, ESPHomeDumper.represent_float)
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if IS_PY2:
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ESPHomeDumper.add_multi_representer(unicode, ESPHomeDumper.represent_stringify)
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ESPHomeDumper.add_multi_representer(long, ESPHomeDumper.represent_int)
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ESPHomeDumper.add_multi_representer(IPAddress, ESPHomeDumper.represent_stringify)
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ESPHomeDumper.add_multi_representer(MACAddress, ESPHomeDumper.represent_stringify)
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ESPHomeDumper.add_multi_representer(TimePeriod, ESPHomeDumper.represent_stringify)
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ESPHomeDumper.add_multi_representer(Lambda, ESPHomeDumper.represent_lambda)
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ESPHomeDumper.add_multi_representer(core.ID, ESPHomeDumper.represent_id)
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ESPHomeDumper.add_multi_representer(uuid.UUID, ESPHomeDumper.represent_stringify)
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