def prepareObject(function, obj):
"""
This is a funtion that serves to make interacting with the
backend as transparent as possible. It"s sole purpose it to
prepare the attributes and data of the various pyrrd objects
for use by the functions that call out to rrdtool.
For all of the rrdtool-methods in this module, we need to split
the named parameters up into pairs, assebled all the stuff in
the list obj.data, etc.
This function will get called by methods in the pyrrd wrapper
objects. For instance, most of the methods of pyrrd.rrd.RRD
will call this function. In graph, Pretty much only the method
pyrrd.graph.Graph.write() will call this function.
"""
if function == 'create':
validParams = ['start', 'step']
params = buildParameters(obj, validParams)
params += [unicode(x) for x in obj.ds]
params += [unicode(x) for x in obj.rra]
return (obj.filename, params)
if function == 'update':
validParams = ['template']
params = buildParameters(obj, validParams)
FIRST_VALUE = 0
DATA = 1
TIME_OR_DATA = 0
if obj.values[FIRST_VALUE][DATA]:
params += ['%s:%s' % (time, values) for time, values in obj.values]
else:
params += [data for data, nil in obj.values]
return (obj.filename, params)
if function == 'fetch':
validParams = ['resolution', 'start', 'end']
params = buildParameters(obj, validParams)
return (obj.filename, [obj.cf] + params)
if function == 'info':
return (obj.filename, obj)
if function == 'graph':
validParams = [
'start', 'end', 'step', 'title', 'vertical_label', 'width',
'height', 'only_graph', 'upper_limit', 'lower_limit', 'rigid',
'alt_autoscale', 'alt_autoscale_max', 'no_gridfit', 'x_grid',
'y_grid', 'alt_y_grid', 'logarithmic', 'units_exponent', 'zoom',
'font', 'font_render_mode', 'interlaced', 'no_legend',
'force_rules_legend', 'tabwidth', 'base', 'color', 'imgformat',
'slope_mode'
]
params = buildParameters(obj, validParams)
params += [unicode(x) for x in obj.data]
return (obj.filename, params)
def prepareObject(function, obj):
"""
This is a funtion that serves to make interacting with the
backend as transparent as possible. It's sole purpose it to
prepare the attributes and data of the various pyrrd objects
for use by the functions that call out to rrdtool.
For all of the rrdtool-methods in this module, we need a filename
and then parameters -- both as strings. That's it.
This function will get called by methods in the pyrrd wrapper
objects. For instance, most of the methods of pyrrd.rrd.RRD
will call this function. In graph, Pretty much only the method
pyrrd.graph.Graph.write() will call this function.
"""
if function == 'create':
validParams = ['start', 'step']
params = common.buildParameters(obj, validParams)
data = [ str(x) for x in obj.ds ]
data += [ str(x) for x in obj.rra ]
return (obj.filename, params + data)
if function == 'update':
validParams = ['template']
params = common.buildParameters(obj, validParams)
FIRST_VALUE = 0
DATA = 1
TIME_OR_DATA = 0
if obj.values[FIRST_VALUE][DATA]:
data = ['%s:%s' % (time, values)
for time, values in obj.values]
else:
data = [data for data, nil in obj.values]
return (obj.filename, params + data)
if function == 'fetch':
validParams = ['resolution', 'start', 'end']
params = common.buildParameters(obj, validParams)
params.insert(0,obj.cf)
return (obj.filename, params)
if function == 'info':
return (obj.filename, obj)
if function == 'graph':
validParams = ['start', 'end', 'step', 'title',
'vertical_label', 'width', 'height', 'only_graph',
'upper_limit', 'lower_limit', 'rigid', 'alt_autoscale',
'alt_autoscale_max', 'no_gridfit', 'x_grid', 'y_grid',
'alt_y_grid', 'logarithmic', 'units_exponent', 'zoom',
'font', 'font_render_mode', 'interlaced', 'no_legend',
'force_rules_legend', 'tabwidth', 'base', 'color']
params = common.buildParameters(obj, validParams)
data = [ str(x) for x in obj.data ]
return (obj.filename, params + data)
