def __init__(self, configpath, mapfile=None,fonts=None,home_html=None):
conf = SafeConfigParser()
conf.readfp(open(configpath))
# TODO - be able to supply in config as well
self.home_html = home_html
self.conf = conf
if fonts:
mapnik.register_fonts(fonts)
if mapfile:
wms_factory = BaseWMSFactory(configpath)
# TODO - add support for Cascadenik MML
wms_factory.loadXML(mapfile)
wms_factory.finalize()
self.mapfactory = wms_factory
else:
if not conf.has_option_with_value('server', 'module'):
raise ServerConfigurationError('The factory module is not defined in the configuration file.')
try:
mapfactorymodule = do_import(conf.get('server', 'module'))
except ImportError:
raise ServerConfigurationError('The factory module could not be loaded.')
if hasattr(mapfactorymodule, 'WMSFactory'):
self.mapfactory = getattr(mapfactorymodule, 'WMSFactory')()
else:
raise ServerConfigurationError('The factory module does not have a WMSFactory class.')
if conf.has_option('server', 'debug'):
self.debug = int(conf.get('server', 'debug'))
else:
self.debug = 0
if self.conf.has_option_with_value('server', 'maxage'):
self.max_age = 'max-age=%d' % self.conf.get('server', 'maxage')
else:
self.max_age = None
def __init__(self, configpath):
conf = SafeConfigParser()
conf.readfp(open(configpath))
self.conf = conf
if not conf.has_option_with_value('server', 'module'):
raise ServerConfigurationError(
'The factory module is not defined in the configuration file.')
try:
mapfactorymodule = __import__(conf.get('server', 'module'))
except ImportError:
raise ServerConfigurationError(
'The factory module could not be loaded.')
if hasattr(mapfactorymodule, 'WMSFactory'):
self.mapfactory = getattr(mapfactorymodule, 'WMSFactory')()
else:
raise ServerConfigurationError(
'The factory module does not have a WMSFactory class.')
if conf.has_option('server', 'debug'):
self.debug = int(conf.get('server', 'debug'))
else:
self.debug = 0
if self.conf.has_option_with_value('server', 'maxage'):
self.max_age = 'max-age=%d' % self.conf.get('server', 'maxage')
else:
self.max_age = None
def register_style(self, name, style):
if not name:
raise ServerConfigurationError('Attempted to register a style without providing a name.')
if name in self.aggregatestyles.keys() or name in self.styles.keys():
raise ServerConfigurationError("Attempted to register a style with a name already in use: '%s'" % name)
if not isinstance(style, Style):
raise ServerConfigurationError('Bad style object passed to register_style() for style "%s".' % name)
self.styles[name] = style
def finalize(self):
if len(self.layers) == 0:
raise ServerConfigurationError('No layers defined!')
if len(self.styles) == 0:
raise ServerConfigurationError('No styles defined!')
for layer in self.layers.values():
for style in list(layer.styles) + list(layer.wmsextrastyles):
if style not in self.styles.keys() + self.aggregatestyles.keys():
raise ServerConfigurationError('Layer "%s" refers to undefined style "%s".' % (layer.name, style))
def register_aggregate_style(self, name, stylenames):
if not name:
raise ServerConfigurationError('Attempted to register an aggregate style without providing a name.')
if name in self.aggregatestyles.keys() or name in self.styles.keys():
raise ServerConfigurationError('Attempted to register an aggregate style with a name already in use.')
self.aggregatestyles[name] = []
for stylename in stylenames:
if stylename not in self.styles.keys():
raise ServerConfigurationError('Attempted to register an aggregate style containing a style that does not exist.')
self.aggregatestyles[name].append(stylename)
def __init__(self, configpath, mapfile=None, fonts=None, home_html=None):
# 实例化 ConfigParser 并加载配置文件
conf = SafeConfigParser()
# 从配置文件读取并分析（分列）配置信息
conf.readfp(open(configpath))
# TODO - be able to supply in config as well
self.home_html = home_html
self.conf = conf
if fonts:
# 注册指定字体
mapnik.register_fonts(fonts)
if mapfile:
# 生成BaseWMSFactory实例
wms_factory = BaseWMSFactory(configpath)
# TODO - add support for Cascadenik MML
wms_factory.loadXML(mapfile)
wms_factory.finalize()
self.mapfactory = wms_factory
else:
# 阅读default.conf,有疑惑???
#
# 原default.conf文件中module未定义,需要使用要在default.conf中自行定义
if not conf.has_option_with_value('server', 'module'):
raise ServerConfigurationError(
'The factory module is not defined in the configuration file.'
)
# 导入指定module
try:
# get(section，option)，Get an option value for the named
# section.
mapfactorymodule = do_import(conf.get('server', 'module'))
except ImportError:
raise ServerConfigurationError(
'The factory module could not be loaded.')
if hasattr(mapfactorymodule, 'WMSFactory'):
# Get a named attribute from an object; getattr(x, 'y') is
# equivalent to x.y.
self.mapfactory = getattr(mapfactorymodule, 'WMSFactory')()
else:
raise ServerConfigurationError(
'The factory module does not have a WMSFactory class.')
if conf.has_option('server', 'debug'):
self.debug = int(conf.get('server', 'debug'))
else:
self.debug = 0
if self.conf.has_option_with_value('server', 'maxage'):
self.max_age = 'max-age=%d' % self.conf.get('server', 'maxage')
else:
self.max_age = None
def register_style(self, name, style):
# 差错处理，是否输入name，name是否已经存在，style类型是否正确
if not name:
raise ServerConfigurationError(
'Attempted to register a style without providing a name.')
if name in self.aggregatestyles.keys() or name in self.styles.keys():
raise ServerConfigurationError(
"Attempted to register a style with a name already in use: '%s'"
% name)
if not isinstance(style, Style):
raise ServerConfigurationError(
'Bad style object passed to register_style() for style "%s".' %
name)
# 在对象的style属性的dict中添加style
self.styles[name] = style
def loadXML(self, xmlfile=None, strict=False, xmlstring='', basepath=''):
"""Loads and stores a complete map definition in leiu of a set of layers.
Stores an empty style of the same name, which is the only option for rendering.
The map will be rendered as prescribed in the XML."""
config = ConfigParser.SafeConfigParser()
map_wms_srs = None
if self.configpath:
config.readfp(open(self.configpath))
if config.has_option('map', 'wms_srs'):
map_wms_srs = config.get('map', 'wms_srs')
tmp_map = Map(0,0)
if xmlfile:
load_map(tmp_map, xmlfile, strict)
elif xmlstring:
load_map_from_string(tmp_map, xmlstring, strict, basepath)
else:
raise ServerConfigurationError("Mapnik configuration XML is not specified - 'xmlfile' and 'xmlstring' variables are empty.\
Please set one of this variables to load mapnik map object.")
# parse map level attributes
if tmp_map.background:
self.map_attributes['bgcolor'] = tmp_map.background
if tmp_map.buffer_size:
self.map_attributes['buffer_size'] = tmp_map.buffer_size
if xmlfile is None :
# Map objects have no name, so just call it default.
layer_name = 'default'
else :
# The layer name is the basename of the xml file or the
# whole file name
layer_name = xmlfile
fname_match = re.match('([A-Za-z0-9_\-\.]+).xml', xmlfile)
if fname_match is not None :
layer_name = fname_match.group(1)
else :
layer_name = xmlfile
style_name = layer_name
style_obj = Style()
# Make the map have attributes expected of layers
tmp_map.name = layer_name
map_p = common.Projection(tmp_map.srs)
if map_wms_srs is None :
tmp_map.wms_srs = map_p.epsgstring()
else :
tmp_map.wms_srs = map_wms_srs
tmp_map.queryable = False
# set map extent from config file.
geog_coords = config.get('map','wms_extent').split(',')
geog_box = Box2d(float(geog_coords[0]), float(geog_coords[1]), float(geog_coords[2]), float(geog_coords[3]))
proj_box = geog_box.forward(map_p)
tmp_map.zoom_to_box(proj_box)
tmp_map.maximum_extent = proj_box
self.register_style(style_name, style_obj)
self.register_layer(tmp_map, style_name)
def __init__(self,
mandatory,
cast,
default=None,
allowedvalues=None,
fallback=False):
""" An OGC request parameter definition. Used to describe a
parameter's characteristics.
@param mandatory: Is this parameter required by the request?
@type mandatory: Boolean.
@param default: Default value to use if one is not provided
and the parameter is optional.
@type default: None or any valid value.
@param allowedvalues: A list of allowed values for the parameter.
If a value is provided that is not in this
list, an error is raised.
@type allowedvalues: A python tuple of values.
@param fallback: Whether the value of the parameter should fall
back to the default should an illegal value be
provided.
@type fallback: Boolean.
@return: A L{ParameterDefinition} instance.
"""
if mandatory not in [True, False]:
raise ServerConfigurationError(
"Bad value for 'mandatory' parameter, must be True or False.")
self.mandatory = mandatory
if not callable(cast):
raise ServerConfigurationError(
'Cast parameter definition must be callable.')
self.cast = cast
self.default = default
if allowedvalues and type(allowedvalues) != type(()):
raise ServerConfigurationError(
"Bad value for 'allowedvalues' parameter, must be a tuple.")
self.allowedvalues = allowedvalues
if fallback not in [True, False]:
raise ServerConfigurationError(
"Bad value for 'fallback' parameter, must be True or False.")
self.fallback = fallback
def __init__(self, conf, mapfactory, opsonlineresource):
self.conf = conf
self.mapfactory = mapfactory
self.opsonlineresource = opsonlineresource
if self.conf.has_option('service', 'allowedepsgcodes'):
self.allowedepsgcodes = map(lambda code: 'epsg:%s' % code, self.conf.get('service', 'allowedepsgcodes').split(','))
else:
raise ServerConfigurationError('Allowed EPSG codes not properly configured.')
self.capabilities = None
def __init__(self,
configpath,
server_module,
fonts=None,
home_html=None,
**kwargs
):
BasePasteWSGIApp.__init__(self,
configpath,
font=fonts, home_html=home_html, **kwargs)
try:
mapfactorymodule = do_import(server_module)
except ImportError:
raise ServerConfigurationError('The factory module could not be loaded.')
if hasattr(mapfactorymodule, 'WMSFactory'):
self.mapfactory = getattr(mapfactorymodule, 'WMSFactory')(configpath)
else:
raise ServerConfigurationError('The factory module does not have a WMSFactory class.')
def register_layer(self, layer, defaultstyle, extrastyles=()):
layername = layer.name
if not layername:
raise ServerConfigurationError('Attempted to register an unnamed layer.')
if not layer.wms_srs and not re.match('^\+init=epsg:\d+$', layer.srs) and not re.match('^\+proj=.*$', layer.srs):
raise ServerConfigurationError('Attempted to register a layer without an epsg projection defined.')
if defaultstyle not in self.styles.keys() + self.aggregatestyles.keys():
raise ServerConfigurationError('Attempted to register a layer with an non-existent default style.')
layer.wmsdefaultstyle = defaultstyle
if isinstance(extrastyles, tuple):
for stylename in extrastyles:
if type(stylename) == type(''):
if stylename not in self.styles.keys() + self.aggregatestyles.keys():
raise ServerConfigurationError('Attempted to register a layer with an non-existent extra style.')
else:
ServerConfigurationError('Attempted to register a layer with an invalid extra style name.')
layer.wmsextrastyles = extrastyles
else:
raise ServerConfigurationError('Layer "%s" was passed an invalid list of extra styles. List must be a tuple of strings.' % layername)
layerproj = common.Projection(layer.srs)
env = getattr(layer, 'maximum_extent', layer.envelope())
llp = layerproj.inverse(Coord(env.minx, env.miny))
urp = layerproj.inverse(Coord(env.maxx, env.maxy))
if self.latlonbb is None:
self.latlonbb = Box2d(llp, urp)
else:
self.latlonbb.expand_to_include(Box2d(llp, urp))
self.ordered_layers.append(layer)
self.layers[layername] = layer
def __init__(self, home_html=None):
conf = SafeConfigParser()
conf.readfp(open(self.configpath))
# TODO - be able to supply in config as well
self.home_html = home_html
self.conf = conf
if not conf.has_option_with_value('server', 'module'):
raise ServerConfigurationError(
'The factory module is not defined in the configuration file.')
try:
mapfactorymodule = __import__(conf.get('server', 'module'))
except ImportError:
raise ServerConfigurationError(
'The factory module could not be loaded.')
if hasattr(mapfactorymodule, 'WMSFactory'):
self.mapfactory = getattr(mapfactorymodule, 'WMSFactory')()
else:
raise ServerConfigurationError(
'The factory module does not have a WMSFactory class.')
if conf.has_option('server', 'debug'):
self.debug = int(conf.get('server', 'debug'))
else:
self.debug = 0
def register_layer(self, layer, defaultstyle, extrastyles=()):
layername = layer.name
#差错机制，检测相关参数是否有效
if not layername:
#ServerConfigurationError为从ogcserver.exceptions中导入的方法，执行内容为空
raise ServerConfigurationError(
'Attempted to register an unnamed layer.')
if not layer.wms_srs and not re.match('^\+init=epsg:\d+$',
layer.srs) and not re.match(
'^\+proj=.*$', layer.srs):
raise ServerConfigurationError(
'Attempted to register a layer without an epsg projection defined.'
)
if defaultstyle not in self.styles.keys() + self.aggregatestyles.keys(
):
raise ServerConfigurationError(
'Attempted to register a layer with an non-existent default style.'
)
layer.wmsdefaultstyle = defaultstyle
# 判断是否为tuple类型，（'a',)为tuple类型，aggregates也为tuple类型
# type(('a',))输出为 tuple
if isinstance(extrastyles, tuple):
#
for stylename in extrastyles:
# 如果stylename类型为str
if type(stylename) == type(''):
if stylename not in self.styles.keys(
) + self.aggregatestyles.keys():
raise ServerConfigurationError(
'Attempted to register a layer with an non-existent extra style.'
)
else:
ServerConfigurationError(
'Attempted to register a layer with an invalid extra style name.'
)
# wmsextrastyles？？？？
layer.wmsextrastyles = extrastyles
else:
raise ServerConfigurationError(
'Layer "%s" was passed an invalid list of extra styles. List must be a tuple of strings.'
% layername)
# 调用common中Projection
layerproj = common.Projection(layer.srs)
env = layer.envelope()
llp = layerproj.inverse(Coord(env.minx, env.miny))
urp = layerproj.inverse(Coord(env.maxx, env.maxy))
if self.latlonbb is None:
self.latlonbb = Envelope(llp, urp)
else:
self.latlonbb.expand_to_include(Envelope(llp, urp))
self.ordered_layers.append(layer)
self.layers[layername] = layer
def register_layer(self, layer, defaultstyle, extrastyles=()):
layername = layer.name
if not layername:
raise ServerConfigurationError(
'Attempted to register an unnamed layer.')
if not layer.wms_srs and not re.match('^\+init=epsg:\d+$',
layer.srs) and not re.match(
'^\+proj=.*$', layer.srs):
raise ServerConfigurationError(
'Attempted to register a layer without an epsg projection defined.'
)
if defaultstyle not in self.styles.keys() + self.aggregatestyles.keys(
):
raise ServerConfigurationError(
'Attempted to register a layer with an non-existent default style.'
)
layer.wmsdefaultstyle = defaultstyle
if isinstance(extrastyles, tuple):
for stylename in extrastyles:
if type(stylename) == type(''):
if stylename not in self.styles.keys(
) + self.aggregatestyles.keys():
raise ServerConfigurationError(
'Attempted to register a layer with an non-existent extra style.'
)
else:
ServerConfigurationError(
'Attempted to register a layer with an invalid extra style name.'
)
layer.wmsextrastyles = extrastyles
else:
raise ServerConfigurationError(
'Layer "%s" was passed an invalid list of extra styles. List must be a tuple of strings.'
% layername)
self.ordered_layers.append(layer)
self.layers[layername] = layer
def myloadXML(self, xmlfile, strict=False):
config = ConfigParser.SafeConfigParser()
map_wms_srs = None
if self.configpath:
config.readfp(open(self.configpath))
if config.has_option('map', 'wms_srs'):
map_wms_srs = config.get('map', 'wms_srs')
tmp_map = mapnik.Map(0, 0)
xml_f = open(xmlfile, 'rb')
xml_str = xml_f.read()
xml_f.close()
mapnik.load_map_from_string(tmp_map, xml_str, strict)
# parse map level attributes
if tmp_map.background:
self.map_attributes['bgcolor'] = tmp_map.background
if tmp_map.buffer_size:
self.map_attributes['buffer_size'] = tmp_map.buffer_size
for lyr in tmp_map.layers:
layer_section = 'layer_%s' % lyr.name
layer_wms_srs = None
if config.has_option(layer_section, 'wms_srs'):
layer_wms_srs = config.get(layer_section, 'wms_srs')
else:
layer_wms_srs = map_wms_srs
style_count = len(lyr.styles)
if style_count == 0:
raise ServerConfigurationError(
"Cannot register Layer '%s' without a style" % lyr.name)
elif style_count == 1:
style_obj = tmp_map.find_style(lyr.styles[0])
style_name = lyr.styles[0]
meta_s = extract_named_rules(style_obj)
if meta_s:
self.meta_styles['%s_meta' % lyr.name] = meta_s
if hasattr(lyr, 'abstract'):
name_ = lyr.abstract
else:
name_ = lyr.name
meta_layer_name = '%s:%s' % (name_, '-'.join(meta_s.names))
meta_layer_name = meta_layer_name.replace(' ', '_')
self.meta_styles[meta_layer_name] = meta_s
meta_lyr = ogcserver.common.copy_layer(lyr)
meta_lyr.meta_style = meta_layer_name
meta_lyr.name = meta_layer_name
meta_lyr.wmsextrastyles = ()
meta_lyr.defaultstyle = meta_layer_name
meta_lyr.wms_srs = layer_wms_srs
self.ordered_layers.append(meta_lyr)
self.meta_layers[meta_layer_name] = meta_lyr
print meta_layer_name
if style_name not in self.aggregatestyles.keys(
) and style_name not in self.styles.keys():
self.register_style(style_name, style_obj)
# must copy layer here otherwise we'll segfault
lyr_ = ogcserver.common.copy_layer(lyr)
lyr_.wms_srs = layer_wms_srs
self.register_layer(lyr_,
style_name,
extrastyles=(style_name, ))
elif style_count > 1:
for style_name in lyr.styles:
style_obj = tmp_map.find_style(style_name)
meta_s = extract_named_rules(style_obj)
if meta_s:
self.meta_styles['%s_meta' % lyr.name] = meta_s
if hasattr(lyr, 'abstract'):
name_ = lyr.abstract
else:
name_ = lyr.name
meta_layer_name = '%s:%s' % (name_, '-'.join(
meta_s.names))
meta_layer_name = meta_layer_name.replace(' ', '_')
self.meta_styles[meta_layer_name] = meta_s
meta_lyr = ogcserver.common.copy_layer(lyr)
meta_lyr.meta_style = meta_layer_name
print meta_layer_name
meta_lyr.name = meta_layer_name
meta_lyr.wmsextrastyles = ()
meta_lyr.defaultstyle = meta_layer_name
meta_lyr.wms_srs = layer_wms_srs
self.ordered_layers.append(meta_lyr)
self.meta_layers[meta_layer_name] = meta_lyr
if style_name not in self.aggregatestyles.keys(
) and style_name not in self.styles.keys():
self.register_style(style_name, style_obj)
aggregates = tuple([sty for sty in lyr.styles])
aggregates_name = '%s_aggregates' % lyr.name
self.register_aggregate_style(aggregates_name, aggregates)
# must copy layer here otherwise we'll segfault
lyr_ = ogcserver.common.copy_layer(lyr)
lyr_.wms_srs = layer_wms_srs
self.register_layer(lyr_,
aggregates_name,
extrastyles=aggregates)
#sty,rl = Style(), Rule()
#poly = PolygonSymbolizer(Color('#f2eff9'))
#line = LineSymbolizer(Color('#ff3366'),.5)
#rl.symbols.extend([poly,line])
#sty.rules.append(rl)
#self.register_style('world_style',sty)
#lyr = Layer('world',PROJ4_STRING)
#lyr.datasource = Shapefile(file=SHAPEFILE)
#lyr.title = 'World Borders'
#lyr.abstract = 'Country Borders of the World'
#self.register_layer(lyr,'world_style',('world_style',))
self.finalize()
def loadXML(self, xmlfile=None, strict=False, xmlstring='', basepath=''):
config = ConfigParser.SafeConfigParser()
#声明变量，用于保存 map中的wms_srs
map_wms_srs = None
if self.configpath:
config.readfp(open(self.configpath))
if config.has_option('map', 'wms_srs'):
map_wms_srs = config.get('map', 'wms_srs')
#声明变量tmp_map保存Map(0,0),Map从mapnik模块中导入,此处详见doc/mapnik_help.text
tmp_map = Map(0, 0)
#支持文件模式和字符串格式的输入
if xmlfile:
load_map(tmp_map, xmlfile, strict)
elif xmlstring:
load_map_from_string(tmp_map, xmlstring, strict, basepath)
else:
#差错机制
raise ServerConfigurationError(
"Mapnik configuration XML is not specified - 'xmlfile' and 'xmlstring' variables are empty.\
Please set one of this variables to load mapnik map object.")
# parse map level attributes
#解析地图图层特征参数
#背景颜色（待查）
if tmp_map.background:
self.map_attributes['bgcolor'] = tmp_map.background
#buffer大小（待查）
if tmp_map.buffer_size:
self.map_attributes['buffer_size'] = tmp_map.buffer_size
#对tmp_map中layers中所有lyr，进行参数解析
for lyr in tmp_map.layers:
layer_section = 'layer_%s' % lyr.name
layer_wms_srs = None
if config.has_option(layer_section, 'wms_srs'):
layer_wms_srs = config.get(layer_section, 'wms_srs')
else:
layer_wms_srs = map_wms_srs
if config.has_option(layer_section, 'title'):
lyr.title = config.get(layer_section, 'title')
else:
lyr.title = ''
if config.has_option(layer_section, 'abstract'):
lyr.abstract = config.get(layer_section, 'abstract')
else:
lyr.abstract = ''
style_count = len(lyr.styles)
#必须设定有lyr.styles
if style_count == 0:
raise ServerConfigurationError(
"Cannot register Layer '%s' without a style" % lyr.name)
elif style_count == 1:
#.find_style方法为mapnik中Map类的方法？？？？？
style_obj = tmp_map.find_style(lyr.styles[0])
style_name = lyr.styles[0]
# 对style_obj进行处理，提取参数返回为 style类
meta_s = extract_named_rules(style_obj)
if meta_s:
# BaseWMSFactory类的meta_styles属性
self.meta_styles['%s_meta' % lyr.name] = meta_s
# 判断lyr是否含有abstract属性
if hasattr(lyr, 'abstract'):
name_ = lyr.abstract
else:
name_ = lyr.name
# 将meta_s.names中的字符串序列用“-”连接
meta_layer_name = '%s:%s' % (name_, '-'.join(meta_s.names))
# 将meta_layer_name中的空格全部替换为“_”
meta_layer_name = meta_layer_name.replace(' ', '_')
self.meta_styles[meta_layer_name] = meta_s
meta_lyr = common.copy_layer(lyr)
meta_lyr.meta_style = meta_layer_name
meta_lyr.name = meta_layer_name
meta_lyr.wmsextrastyles = ()
meta_lyr.defaultstyle = meta_layer_name
meta_lyr.wms_srs = layer_wms_srs
self.ordered_layers.append(meta_lyr)
self.meta_layers[meta_layer_name] = meta_lyr
print meta_layer_name
# 如果aggregatestyles和styles中没有style_name的关键字，则注册style。.register_style为本类定义的方法
if style_name not in self.aggregatestyles.keys(
) and style_name not in self.styles.keys():
self.register_style(style_name, style_obj)
# must copy layer here otherwise we'll segfault
# c此处必须拷贝图层，否则将出现段错误
# common
lyr_ = common.copy_layer(lyr)
lyr_.wms_srs = layer_wms_srs
#register_layer为本类定义的一个方法，
self.register_layer(lyr_,
style_name,
extrastyles=(style_name, ))
# 当style_count > 1时，处理步骤与style_count = 1时大致相同，
elif style_count > 1:
for style_name in lyr.styles:
style_obj = tmp_map.find_style(style_name)
meta_s = extract_named_rules(style_obj)
if meta_s:
self.meta_styles['%s_meta' % lyr.name] = meta_s
if hasattr(lyr, 'abstract'):
name_ = lyr.abstract
else:
name_ = lyr.name
meta_layer_name = '%s:%s' % (name_, '-'.join(
meta_s.names))
meta_layer_name = meta_layer_name.replace(' ', '_')
self.meta_styles[meta_layer_name] = meta_s
meta_lyr = common.copy_layer(lyr)
meta_lyr.meta_style = meta_layer_name
print meta_layer_name
meta_lyr.name = meta_layer_name
meta_lyr.wmsextrastyles = ()
meta_lyr.defaultstyle = meta_layer_name
meta_lyr.wms_srs = layer_wms_srs
self.ordered_layers.append(meta_lyr)
self.meta_layers[meta_layer_name] = meta_lyr
if style_name not in self.aggregatestyles.keys(
) and style_name not in self.styles.keys():
self.register_style(style_name, style_obj)
# 与style_count = 1时的不同之处，
aggregates = tuple([sty for sty in lyr.styles])
aggregates_name = '%s_aggregates' % lyr.name
self.register_aggregate_style(aggregates_name, aggregates)
# must copy layer here otherwise we'll segfault
lyr_ = common.copy_layer(lyr)
lyr_.wms_srs = layer_wms_srs
self.register_layer(lyr_,
aggregates_name,
extrastyles=aggregates)
if 'default' in aggregates:
sys.stderr.write(
"Warning: Multi-style layer '%s' contains a regular style named 'default'. \
This style will effectively be hidden by the 'all styles' default style for multi-style layers.\n"
% lyr_.name)
def _buildMap(self, params):
if str(params['crs']) not in self.allowedepsgcodes:
raise OGCException(
'Unsupported CRS "%s" requested.' % str(params['crs']).upper(),
'InvalidCRS')
if params['bbox'][0] >= params['bbox'][2]:
raise OGCException(
"BBOX values don't make sense. minx is greater than maxx.")
if params['bbox'][1] >= params['bbox'][3]:
raise OGCException(
"BBOX values don't make sense. miny is greater than maxy.")
# relax this for now to allow for a set of specific layers (meta layers even)
# to be used without known their styles or putting the right # of commas...
#if params.has_key('styles') and len(params['styles']) != len(params['layers']):
# raise OGCException('STYLES length does not match LAYERS length.')
m = Map(params['width'], params['height'], '+init=%s' % params['crs'])
if params.has_key('transparent') and params['transparent'] in (
'FALSE', 'False', 'false'):
if params['bgcolor']:
m.background = params['bgcolor']
elif not params.has_key(
'transparent') and self.mapfactory.map_attributes.get(
'bgcolor'):
m.background = self.mapfactory.map_attributes['bgcolor']
else:
m.background = Color(0, 0, 0, 0)
if params.has_key('buffer_size'):
if params['buffer_size']:
m.buffer_size = params['buffer_size']
else:
buffer_ = self.mapfactory.map_attributes.get('buffer_size')
if buffer_:
m.buffer_size = self.mapfactory.map_attributes['buffer_size']
# haiti spec tmp hack! show meta layers without having
# to request huge string to avoid some client truncating it!
if params['layers'] and params['layers'][0] in (
'osm_haiti_overlay', 'osm_haiti_overlay_900913'):
for layer_obj in self.mapfactory.ordered_layers:
layer = copy_layer(layer_obj)
if not hasattr(layer, 'meta_style'):
pass
else:
layer.styles.append(layer.meta_style)
m.append_style(
layer.meta_style,
self.mapfactory.meta_styles[layer.meta_style])
m.layers.append(layer)
# a non WMS spec way of requesting all layers
# uses orderedlayers that preserves original ordering in XML mapfile
elif params['layers'] and params['layers'][0] == '__all__':
for layer_obj in self.mapfactory.ordered_layers:
# if we don't copy the layer here we get
# duplicate layers added to the map because the
# layer is kept around and the styles "pile up"...
layer = copy_layer(layer_obj)
if hasattr(layer, 'meta_style'):
continue
reqstyle = layer.wmsdefaultstyle
if reqstyle in self.mapfactory.aggregatestyles.keys():
for stylename in self.mapfactory.aggregatestyles[reqstyle]:
layer.styles.append(stylename)
else:
layer.styles.append(reqstyle)
for stylename in layer.styles:
if stylename in self.mapfactory.styles.keys():
m.append_style(stylename,
self.mapfactory.styles[stylename])
m.layers.append(layer)
else:
for layerindex, layername in enumerate(params['layers']):
if layername in self.mapfactory.meta_layers:
layer = copy_layer(self.mapfactory.meta_layers[layername])
layer.styles.append(layername)
m.append_style(layername,
self.mapfactory.meta_styles[layername])
else:
try:
# uses unordered dict of layers
# order based on params['layers'] request which
# should be originally informed by order of GetCaps response
layer = copy_layer(self.mapfactory.layers[layername])
except KeyError:
raise OGCException(
'Layer "%s" not defined.' % layername,
'LayerNotDefined')
try:
reqstyle = params['styles'][layerindex]
except IndexError:
reqstyle = ''
if reqstyle and reqstyle not in layer.wmsextrastyles:
raise OGCException(
'Invalid style "%s" requested for layer "%s".' %
(reqstyle, layername), 'StyleNotDefined')
if not reqstyle:
reqstyle = layer.wmsdefaultstyle
if reqstyle in self.mapfactory.aggregatestyles.keys():
for stylename in self.mapfactory.aggregatestyles[
reqstyle]:
layer.styles.append(stylename)
else:
layer.styles.append(reqstyle)
for stylename in layer.styles:
if stylename in self.mapfactory.styles.keys():
m.append_style(stylename,
self.mapfactory.styles[stylename])
else:
raise ServerConfigurationError(
'Layer "%s" refers to non-existent style "%s".'
% (layername, stylename))
m.layers.append(layer)
m.zoom_to_box(
Envelope(params['bbox'][0], params['bbox'][1], params['bbox'][2],
params['bbox'][3]))
return m
def processServiceCapabilities(self, capetree):
if len(self.conf.items('service')) > 0:
servicee = capetree.find('Service')
if servicee == None:
servicee = capetree.find('{http://www.opengis.net/wms}Service')
for item in self.CONF_SERVICE:
if self.conf.has_option_with_value('service', item[0]):
value = self.conf.get('service', item[0]).strip()
try:
item[2](value)
except:
raise ServerConfigurationError(
'Configuration parameter [%s]->%s has an invalid value: %s.'
% ('service', item[0], value))
if item[0] == 'onlineresource':
element = ElementTree.Element('%s' % item[1])
servicee.append(element)
element.set('{http://www.w3.org/1999/xlink}href',
value)
element.set('{http://www.w3.org/1999/xlink}type',
'simple')
elif item[0] == 'keywordlist':
element = ElementTree.Element('%s' % item[1])
servicee.append(element)
keywords = value.split(',')
keywords = map(str.strip, keywords)
for keyword in keywords:
kelement = ElementTree.Element('Keyword')
kelement.text = keyword
element.append(kelement)
else:
element = ElementTree.Element('%s' % item[1])
element.text = to_unicode(value)
servicee.append(element)
if len(self.conf.items_with_value('contact')) > 0:
element = ElementTree.Element('ContactInformation')
servicee.append(element)
for item in self.CONF_CONTACT:
if self.conf.has_option_with_value('contact', item[0]):
value = self.conf.get('contact', item[0]).strip()
try:
item[2](value)
except:
raise ServerConfigurationError(
'Configuration parameter [%s]->%s has an invalid value: %s.'
% ('service', item[0], value))
celement = ElementTree.Element('%s' % item[1])
celement.text = value
element.append(celement)
for item in self.CONF_CONTACT_PERSON_PRIMARY + self.CONF_CONTACT_ADDRESS:
if item in self.CONF_CONTACT_PERSON_PRIMARY:
tagname = 'ContactPersonPrimary'
else:
tagname = 'ContactAddress'
if self.conf.has_option_with_value('contact', item[0]):
if element.find(tagname) == None:
subelement = ElementTree.Element(tagname)
element.append(subelement)
value = self.conf.get('contact', item[0]).strip()
try:
item[2](value)
except:
raise ServerConfigurationError(
'Configuration parameter [%s]->%s has an invalid value: %s.'
% ('service', item[0], value))
celement = ElementTree.Element('%s' % item[1])
celement.text = value
subelement.append(celement)
def finalize(self):
if len(self.layers) <> 1:
raise ServerConfigurationError('Layers improperly defined!')
if len(self.styles) <> 1:
raise ServerConfigurationError('Styles improperly defined!')
def loadXML(self, xmlfile=None, strict=False, xmlstring='', basepath=''):
config = ConfigParser.SafeConfigParser()
map_wms_srs = None
if self.configpath:
config.readfp(open(self.configpath))
if config.has_option('map', 'wms_srs'):
map_wms_srs = config.get('map', 'wms_srs')
tmp_map = Map(0, 0)
if xmlfile:
load_map(tmp_map, xmlfile, strict)
elif xmlstring:
load_map_from_string(tmp_map, xmlstring, strict, basepath)
else:
raise ServerConfigurationError(
"Mapnik configuration XML is not specified - 'xmlfile' and 'xmlstring' variables are empty.\
Please set one of this variables to load mapnik map object.")
# get the map scale
if tmp_map.parameters:
if tmp_map.parameters['scale']:
self.map_scale = float(tmp_map.parameters['scale'])
# parse map level attributes
if tmp_map.background:
self.map_attributes['bgcolor'] = tmp_map.background
if tmp_map.buffer_size:
self.map_attributes['buffer_size'] = tmp_map.buffer_size
for lyr in tmp_map.layers:
layer_section = 'layer_%s' % lyr.name
layer_wms_srs = None
if config.has_option(layer_section, 'wms_srs'):
layer_wms_srs = config.get(layer_section, 'wms_srs')
else:
layer_wms_srs = map_wms_srs
if config.has_option(layer_section, 'title'):
lyr.title = config.get(layer_section, 'title')
else:
lyr.title = ''
if config.has_option(layer_section, 'abstract'):
lyr.abstract = config.get(layer_section, 'abstract')
else:
lyr.abstract = ''
style_count = len(lyr.styles)
if style_count == 0:
raise ServerConfigurationError(
"Cannot register Layer '%s' without a style" % lyr.name)
elif style_count == 1:
style_obj = tmp_map.find_style(lyr.styles[0])
style_name = lyr.styles[0]
meta_s = extract_named_rules(style_obj)
if meta_s:
self.meta_styles['%s_meta' % lyr.name] = meta_s
if hasattr(lyr, 'abstract'):
name_ = lyr.abstract
else:
name_ = lyr.name
meta_layer_name = '%s:%s' % (name_, '-'.join(meta_s.names))
meta_layer_name = meta_layer_name.replace(' ', '_')
self.meta_styles[meta_layer_name] = meta_s
meta_lyr = common.copy_layer(lyr)
meta_lyr.meta_style = meta_layer_name
meta_lyr.name = meta_layer_name
meta_lyr.wmsextrastyles = ()
meta_lyr.defaultstyle = meta_layer_name
meta_lyr.wms_srs = layer_wms_srs
self.ordered_layers.append(meta_lyr)
self.meta_layers[meta_layer_name] = meta_lyr
print meta_layer_name
if style_name not in self.aggregatestyles.keys(
) and style_name not in self.styles.keys():
self.register_style(style_name, style_obj)
# must copy layer here otherwise we'll segfault
lyr_ = common.copy_layer(lyr)
lyr_.wms_srs = layer_wms_srs
self.register_layer(lyr_,
style_name,
extrastyles=(style_name, ))
elif style_count > 1:
for style_name in lyr.styles:
style_obj = tmp_map.find_style(style_name)
meta_s = extract_named_rules(style_obj)
if meta_s:
self.meta_styles['%s_meta' % lyr.name] = meta_s
if hasattr(lyr, 'abstract'):
name_ = lyr.abstract
else:
name_ = lyr.name
meta_layer_name = '%s:%s' % (name_, '-'.join(
meta_s.names))
meta_layer_name = meta_layer_name.replace(' ', '_')
self.meta_styles[meta_layer_name] = meta_s
meta_lyr = common.copy_layer(lyr)
meta_lyr.meta_style = meta_layer_name
print meta_layer_name
meta_lyr.name = meta_layer_name
meta_lyr.wmsextrastyles = ()
meta_lyr.defaultstyle = meta_layer_name
meta_lyr.wms_srs = layer_wms_srs
self.ordered_layers.append(meta_lyr)
self.meta_layers[meta_layer_name] = meta_lyr
if style_name not in self.aggregatestyles.keys(
) and style_name not in self.styles.keys():
self.register_style(style_name, style_obj)
aggregates = tuple([sty for sty in lyr.styles])
aggregates_name = '%s_aggregates' % lyr.name
self.register_aggregate_style(aggregates_name, aggregates)
# must copy layer here otherwise we'll segfault
lyr_ = common.copy_layer(lyr)
lyr_.wms_srs = layer_wms_srs
self.register_layer(lyr_,
aggregates_name,
extrastyles=aggregates)
if 'default' in aggregates:
sys.stderr.write(
"Warning: Multi-style layer '%s' contains a regular style named 'default'. \
This style will effectively be hidden by the 'all styles' default style for multi-style layers.\n"
% lyr_.name)
def loadXML(self, xmlfile, strict=False):
config = ConfigParser.SafeConfigParser()
map_wms_srs = None
if self.configpath:
config.readfp(open(self.configpath))
if config.has_option('map', 'wms_srs'):
map_wms_srs = config.get('map', 'wms_srs')
tmp_map = Map(0, 0)
load_map(tmp_map, xmlfile, strict)
# parse map level attributes
if tmp_map.background:
self.map_attributes['bgcolor'] = tmp_map.background
if tmp_map.buffer_size:
self.map_attributes['buffer_size'] = tmp_map.buffer_size
for lyr in tmp_map.layers:
layer_section = 'layer_%s' % lyr.name
layer_wms_srs = None
if config.has_option(layer_section, 'wms_srs'):
layer_wms_srs = config.get(layer_section, 'wms_srs')
else:
layer_wms_srs = map_wms_srs
style_count = len(lyr.styles)
if style_count == 0:
raise ServerConfigurationError(
"Cannot register Layer '%s' without a style" % lyr.name)
elif style_count == 1:
style_obj = tmp_map.find_style(lyr.styles[0])
style_name = lyr.styles[0]
meta_s = extract_named_rules(style_obj)
if meta_s:
self.meta_styles['%s_meta' % lyr.name] = meta_s
if hasattr(lyr, 'abstract'):
name_ = lyr.abstract
else:
name_ = lyr.name
meta_layer_name = '%s:%s' % (name_, '-'.join(meta_s.names))
meta_layer_name = meta_layer_name.replace(' ', '_')
self.meta_styles[meta_layer_name] = meta_s
meta_lyr = common.copy_layer(lyr)
meta_lyr.meta_style = meta_layer_name
meta_lyr.name = meta_layer_name
meta_lyr.wmsextrastyles = ()
meta_lyr.defaultstyle = meta_layer_name
meta_lyr.wms_srs = layer_wms_srs
self.ordered_layers.append(meta_lyr)
self.meta_layers[meta_layer_name] = meta_lyr
print meta_layer_name
if style_name not in self.aggregatestyles.keys(
) and style_name not in self.styles.keys():
self.register_style(style_name, style_obj)
# must copy layer here otherwise we'll segfault
lyr_ = common.copy_layer(lyr)
lyr_.wms_srs = layer_wms_srs
self.register_layer(lyr_,
style_name,
extrastyles=(style_name, ))
elif style_count > 1:
for style_name in lyr.styles:
style_obj = tmp_map.find_style(style_name)
meta_s = extract_named_rules(style_obj)
if meta_s:
self.meta_styles['%s_meta' % lyr.name] = meta_s
if hasattr(lyr, 'abstract'):
name_ = lyr.abstract
else:
name_ = lyr.name
meta_layer_name = '%s:%s' % (name_, '-'.join(
meta_s.names))
meta_layer_name = meta_layer_name.replace(' ', '_')
self.meta_styles[meta_layer_name] = meta_s
meta_lyr = common.copy_layer(lyr)
meta_lyr.meta_style = meta_layer_name
print meta_layer_name
meta_lyr.name = meta_layer_name
meta_lyr.wmsextrastyles = ()
meta_lyr.defaultstyle = meta_layer_name
meta_lyr.wms_srs = layer_wms_srs
self.ordered_layers.append(meta_lyr)
self.meta_layers[meta_layer_name] = meta_lyr
if style_name not in self.aggregatestyles.keys(
) and style_name not in self.styles.keys():
self.register_style(style_name, style_obj)
aggregates = tuple([sty for sty in lyr.styles])
aggregates_name = '%s_aggregates' % lyr.name
self.register_aggregate_style(aggregates_name, aggregates)
# must copy layer here otherwise we'll segfault
lyr_ = common.copy_layer(lyr)
lyr_.wms_srs = layer_wms_srs
self.register_layer(lyr_,
aggregates_name,
extrastyles=aggregates)