mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-25 17:12:03 +00:00
380 lines
14 KiB
Python
380 lines
14 KiB
Python
# -*- coding: utf-8 -*-
|
|
import copy
|
|
|
|
|
|
class Layout(object):
|
|
LAYOUTS_STR_DICT = {
|
|
'flat': '<flat/>',
|
|
'hashed': '<hashed/>',
|
|
'cache': '<cache><size_in_cells>128</size_in_cells></cache>',
|
|
'complex_key_hashed': '<complex_key_hashed/>',
|
|
'complex_key_hashed_one_key': '<complex_key_hashed/>',
|
|
'complex_key_hashed_two_keys': '<complex_key_hashed/>',
|
|
'complex_key_cache': '<complex_key_cache><size_in_cells>128</size_in_cells></complex_key_cache>',
|
|
'range_hashed': '<range_hashed/>',
|
|
'direct': '<direct/>',
|
|
}
|
|
|
|
def __init__(self, name):
|
|
self.name = name
|
|
self.is_complex = False
|
|
self.is_simple = False
|
|
self.is_ranged = False
|
|
if self.name.startswith('complex'):
|
|
self.layout_type = 'complex'
|
|
self.is_complex = True
|
|
elif name.startswith('range'):
|
|
self.layout_type = 'ranged'
|
|
self.is_ranged = True
|
|
else:
|
|
self.layout_type = 'simple'
|
|
self.is_simple = True
|
|
|
|
def get_str(self):
|
|
return self.LAYOUTS_STR_DICT[self.name]
|
|
|
|
def get_key_block_name(self):
|
|
if self.is_complex:
|
|
return 'key'
|
|
return 'id'
|
|
|
|
|
|
class Row(object):
|
|
def __init__(self, fields, values):
|
|
self.data = {}
|
|
for field, value in zip(fields, values):
|
|
self.data[field.name] = value
|
|
|
|
def has_field(self, name):
|
|
return name in self.data
|
|
|
|
def get_value_by_name(self, name):
|
|
return self.data[name]
|
|
|
|
def set_value(self, name, value):
|
|
self.data[name] = value
|
|
|
|
|
|
class Field(object):
|
|
def __init__(self, name, field_type, is_key=False, is_range_key=False, default=None, hierarchical=False, range_hash_type=None, default_value_for_get=None):
|
|
self.name = name
|
|
self.field_type = field_type
|
|
self.is_key = is_key
|
|
self.default = default
|
|
self.hierarchical = hierarchical
|
|
self.range_hash_type = range_hash_type
|
|
self.is_range = self.range_hash_type is not None
|
|
self.is_range_key = is_range_key
|
|
self.default_value_for_get = default_value_for_get
|
|
|
|
def get_attribute_str(self):
|
|
return '''
|
|
<attribute>
|
|
<name>{name}</name>
|
|
<type>{field_type}</type>
|
|
<null_value>{default}</null_value>
|
|
<hierarchical>{hierarchical}</hierarchical>
|
|
</attribute>'''.format(
|
|
name=self.name,
|
|
field_type=self.field_type,
|
|
default=self.default if self.default else '',
|
|
hierarchical='true' if self.hierarchical else 'false',
|
|
)
|
|
|
|
def get_simple_index_str(self):
|
|
return '<name>{name}</name>'.format(name=self.name)
|
|
|
|
def get_range_hash_str(self):
|
|
if not self.range_hash_type:
|
|
raise Exception("Field {} is not range hashed".format(self.name))
|
|
return '''
|
|
<range_{type}>
|
|
<name>{name}</name>
|
|
</range_{type}>
|
|
'''.format(type=self.range_hash_type, name=self.name)
|
|
|
|
|
|
class DictionaryStructure(object):
|
|
def __init__(self, layout, fields):
|
|
self.layout = layout
|
|
self.keys = []
|
|
self.range_key = None
|
|
self.ordinary_fields = []
|
|
self.range_fields = []
|
|
self.has_hierarchy = False
|
|
|
|
for field in fields:
|
|
if field.is_key:
|
|
self.keys.append(field)
|
|
elif field.is_range:
|
|
self.range_fields.append(field)
|
|
else:
|
|
self.ordinary_fields.append(field)
|
|
|
|
if field.hierarchical:
|
|
self.has_hierarchy = True
|
|
|
|
if field.is_range_key:
|
|
if self.range_key is not None:
|
|
raise Exception("Duplicate range key {}".format(field.name))
|
|
self.range_key = field
|
|
|
|
if not self.layout.is_complex and len(self.keys) > 1:
|
|
raise Exception("More than one key {} field in non complex layout {}".format(len(self.keys), self.layout.name))
|
|
|
|
if self.layout.is_ranged and (not self.range_key or len(self.range_fields) != 2):
|
|
raise Exception("Inconsistent configuration of ranged dictionary")
|
|
|
|
def get_structure_str(self):
|
|
fields_strs = []
|
|
for field in self.ordinary_fields:
|
|
fields_strs.append(field.get_attribute_str())
|
|
|
|
key_strs = []
|
|
if self.layout.is_complex:
|
|
for key_field in self.keys:
|
|
key_strs.append(key_field.get_attribute_str())
|
|
else: # same for simple and ranged
|
|
for key_field in self.keys:
|
|
key_strs.append(key_field.get_simple_index_str())
|
|
|
|
ranged_strs = []
|
|
if self.layout.is_ranged:
|
|
for range_field in self.range_fields:
|
|
ranged_strs.append(range_field.get_range_hash_str())
|
|
|
|
return '''
|
|
<layout>
|
|
{layout_str}
|
|
</layout>
|
|
<structure>
|
|
<{key_block_name}>
|
|
{key_str}
|
|
</{key_block_name}>
|
|
{range_strs}
|
|
{attributes_str}
|
|
</structure>'''.format(
|
|
layout_str=self.layout.get_str(),
|
|
key_block_name=self.layout.get_key_block_name(),
|
|
key_str='\n'.join(key_strs),
|
|
attributes_str='\n'.join(fields_strs),
|
|
range_strs='\n'.join(ranged_strs),
|
|
)
|
|
|
|
def get_ordered_names(self):
|
|
fields_strs = []
|
|
for key_field in self.keys:
|
|
fields_strs.append(key_field.name)
|
|
for range_field in self.range_fields:
|
|
fields_strs.append(range_field.name)
|
|
for field in self.ordinary_fields:
|
|
fields_strs.append(field.name)
|
|
return fields_strs
|
|
|
|
def get_all_fields(self):
|
|
return self.keys + self.range_fields + self.ordinary_fields
|
|
|
|
def _get_dict_get_common_expression(self, dict_name, field, row, or_default, with_type, has):
|
|
if field in self.keys:
|
|
raise Exception("Trying to receive key field {} from dictionary".format(field.name))
|
|
|
|
if not self.layout.is_complex:
|
|
if not or_default:
|
|
key_expr = ', toUInt64({})'.format(row.data[self.keys[0].name])
|
|
else:
|
|
key_expr = ', toUInt64({})'.format(self.keys[0].default_value_for_get)
|
|
else:
|
|
key_exprs_strs = []
|
|
for key in self.keys:
|
|
if not or_default:
|
|
val = row.data[key.name]
|
|
else:
|
|
val = key.default_value_for_get
|
|
if isinstance(val, str):
|
|
val = "'" + val + "'"
|
|
key_exprs_strs.append('to{type}({value})'.format(type=key.field_type, value=val))
|
|
key_expr = ', tuple(' + ','.join(key_exprs_strs) + ')'
|
|
|
|
date_expr = ''
|
|
if self.layout.is_ranged:
|
|
val = row.data[self.range_key.name]
|
|
if isinstance(val, str):
|
|
val = "'" + val + "'"
|
|
val = "to{type}({val})".format(type=self.range_key.field_type, val=val)
|
|
|
|
date_expr = ', ' + val
|
|
|
|
if or_default:
|
|
raise Exception("Can create 'dictGetOrDefault' query for ranged dictionary")
|
|
|
|
if or_default:
|
|
or_default_expr = 'OrDefault'
|
|
if field.default_value_for_get is None:
|
|
raise Exception("Can create 'dictGetOrDefault' query for field {} without default_value_for_get".format(field.name))
|
|
|
|
val = field.default_value_for_get
|
|
if isinstance(val, str):
|
|
val = "'" + val + "'"
|
|
default_value_for_get = ', to{type}({value})'.format(type=field.field_type, value=val)
|
|
else:
|
|
or_default_expr = ''
|
|
default_value_for_get = ''
|
|
|
|
if with_type:
|
|
field_type = field.field_type
|
|
else:
|
|
field_type = ''
|
|
|
|
field_name = ", '" + field.name + "'"
|
|
if has:
|
|
what = "Has"
|
|
field_type = ''
|
|
or_default = ''
|
|
field_name = ''
|
|
date_expr = ''
|
|
def_for_get = ''
|
|
else:
|
|
what = "Get"
|
|
|
|
return "dict{what}{field_type}{or_default}('{dict_name}'{field_name}{key_expr}{date_expr}{def_for_get})".format(
|
|
what=what,
|
|
field_type=field_type,
|
|
dict_name=dict_name,
|
|
field_name=field_name,
|
|
key_expr=key_expr,
|
|
date_expr=date_expr,
|
|
or_default=or_default_expr,
|
|
def_for_get=default_value_for_get,
|
|
)
|
|
|
|
def get_get_expressions(self, dict_name, field, row):
|
|
return [
|
|
self._get_dict_get_common_expression(dict_name, field, row, or_default=False, with_type=False, has=False),
|
|
self._get_dict_get_common_expression(dict_name, field, row, or_default=False, with_type=True, has=False),
|
|
]
|
|
|
|
def get_get_or_default_expressions(self, dict_name, field, row):
|
|
if not self.layout.is_ranged:
|
|
return [
|
|
self._get_dict_get_common_expression(dict_name, field, row, or_default=True, with_type=False, has=False),
|
|
self._get_dict_get_common_expression(dict_name, field, row, or_default=True, with_type=True, has=False),
|
|
]
|
|
return []
|
|
|
|
|
|
def get_has_expressions(self, dict_name, field, row):
|
|
if not self.layout.is_ranged:
|
|
return [self._get_dict_get_common_expression(dict_name, field, row, or_default=False, with_type=False, has=True)]
|
|
return []
|
|
|
|
def get_hierarchical_expressions(self, dict_name, row):
|
|
if self.layout.is_simple:
|
|
key_expr = 'toUInt64({})'.format(row.data[self.keys[0].name])
|
|
return [
|
|
"dictGetHierarchy('{dict_name}', {key})".format(
|
|
dict_name=dict_name,
|
|
key=key_expr,
|
|
),
|
|
]
|
|
|
|
return []
|
|
|
|
def get_is_in_expressions(self, dict_name, row, parent_row):
|
|
if self.layout.is_simple:
|
|
child_key_expr = 'toUInt64({})'.format(row.data[self.keys[0].name])
|
|
parent_key_expr = 'toUInt64({})'.format(parent_row.data[self.keys[0].name])
|
|
return [
|
|
"dictIsIn('{dict_name}', {child_key}, {parent_key})".format(
|
|
dict_name=dict_name,
|
|
child_key=child_key_expr,
|
|
parent_key=parent_key_expr,)
|
|
]
|
|
|
|
return []
|
|
|
|
|
|
class Dictionary(object):
|
|
def __init__(self, name, structure, source, config_path,
|
|
table_name, fields, min_lifetime=3, max_lifetime=5):
|
|
self.name = name
|
|
self.structure = copy.deepcopy(structure)
|
|
self.source = copy.deepcopy(source)
|
|
self.config_path = config_path
|
|
self.table_name = table_name
|
|
self.fields = fields
|
|
self.min_lifetime = min_lifetime
|
|
self.max_lifetime = max_lifetime
|
|
|
|
def generate_config(self):
|
|
with open(self.config_path, 'w') as result:
|
|
if self.structure.layout.get_str() != '<direct/>':
|
|
result.write('''
|
|
<yandex>
|
|
<dictionary>
|
|
<lifetime>
|
|
<min>{min_lifetime}</min>
|
|
<max>{max_lifetime}</max>
|
|
</lifetime>
|
|
<name>{name}</name>
|
|
{structure}
|
|
<source>
|
|
{source}
|
|
</source>
|
|
</dictionary>
|
|
</yandex>
|
|
'''.format(
|
|
min_lifetime=self.min_lifetime,
|
|
max_lifetime=self.max_lifetime,
|
|
name=self.name,
|
|
structure=self.structure.get_structure_str(),
|
|
source=self.source.get_source_str(self.table_name),
|
|
))
|
|
else:
|
|
result.write('''
|
|
<yandex>
|
|
<dictionary>
|
|
<name>{name}</name>
|
|
{structure}
|
|
<source>
|
|
{source}
|
|
</source>
|
|
</dictionary>
|
|
</yandex>
|
|
'''.format(
|
|
min_lifetime=self.min_lifetime,
|
|
max_lifetime=self.max_lifetime,
|
|
name=self.name,
|
|
structure=self.structure.get_structure_str(),
|
|
source=self.source.get_source_str(self.table_name),
|
|
))
|
|
|
|
def prepare_source(self, cluster):
|
|
self.source.prepare(self.structure, self.table_name, cluster)
|
|
|
|
def load_data(self, data):
|
|
if not self.source.prepared:
|
|
raise Exception("Cannot load data for dictionary {}, source is not prepared".format(self.name))
|
|
|
|
self.source.load_data(data, self.table_name)
|
|
|
|
def get_select_get_queries(self, field, row):
|
|
return ['select {}'.format(expr) for expr in self.structure.get_get_expressions(self.name, field, row)]
|
|
|
|
def get_select_get_or_default_queries(self, field, row):
|
|
return ['select {}'.format(expr) for expr in self.structure.get_get_or_default_expressions(self.name, field, row)]
|
|
|
|
def get_select_has_queries(self, field, row):
|
|
return ['select {}'.format(expr) for expr in self.structure.get_has_expressions(self.name, field, row)]
|
|
|
|
def get_hierarchical_queries(self, row):
|
|
return ['select {}'.format(expr) for expr in self.structure.get_hierarchical_expressions(self.name, row)]
|
|
|
|
def get_is_in_queries(self, row, parent_row):
|
|
return ['select {}'.format(expr) for expr in self.structure.get_is_in_expressions(self.name, row, parent_row)]
|
|
|
|
def is_complex(self):
|
|
return self.structure.layout.is_complex
|
|
|
|
def get_fields(self):
|
|
return self.fields
|