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pgsql_classes.py
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pgsql_classes.py
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# from ipdb import set_trace as i_trace
# i_trace()
exec ""
class pgSQL_Functions:
"""
NOTE: USE plpythonu and plluau for WRITE ACCESS
"""
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def exists(self,funct_name):
qry = """
SELECT EXISTS (SELECT 1
FROM pg_proc
WHERE proname='%s');
""" % funct_name
return self.T.pd.read_sql(qry,self.T.eng).exists[0]
class Get:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def event_triggers(self,only_enabled=False,only_disabled=False):
qry = """
SELECT *
FROM pg_event_trigger
"""
if only_enabled or only_disabled:
_v = 'O' if only_enabled else '1' if only_disabled else None
qry += "WHERE evtenabled='%s'" % _v
return self.T.pd.read_sql(qry,self.T.eng)
class Check:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def primary_key(self,table_name):
qry = """
select relhasindex has_index
from pg_class
where relnamespace=2200
and relkind='r'
and relname=quote_ident('%s');
""" % table_name
x = self.T.pd.read_sql(qry,self.T.eng)
return True if len(x['has_index']) and x['has_index'][0]==True else False
class Run:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def make_column_primary_serial_key(self,table_name,uid_col='uid'):
"""
Usage: make_column_primary_serial_key('table_name','uid_col',is_new_col=True)
"""
_info = self.F.tables_get_info(table_name)
is_new_col = False if _info.iloc[:,0].astype(str).tolist().count(uid_col) else True
if is_new_col:
is_primary_key,has_default = False,False
else:
is_primary_key = True if _info[_info.column_name==uid_col].ix[:,'is_primary_key'].tolist()[0] else False
has_default = True if _info[_info.column_name==uid_col].ix[:,'column_default'].tolist()[0] else False
T = {'tbl' : table_name,
'uid_col' : uid_col,
'is_new_col' : is_new_col,
'is_primary_key' : is_primary_key,
'has_default' : has_default}
cmd = """select z_make_column_primary_serial_key( '%(tbl)s',
'%(uid_col)s',
%(is_new_col)s,
%(is_primary_key)s,
%(has_default)s);
""" % T
self.T.to_sql( cmd)
def confirm_extensions(self,exts=['plpythonu','pllua','plshu'],verbose=False):
qry = '\n'.join(['CREATE EXTENSION IF NOT EXISTS %s;' % it for it in exts])
self.T.to_sql( qry)
if verbose: print 'Extensions Confirmed'
return
def reset_index(self,table_name,uid_col,sort_by=''):
qry="""
ALTER TABLE %(tbl)s ADD COLUMN new_%(uid_col)s INTEGER;
WITH upd as (
SELECT %(uid_col)s,row_number() over() new_%(uid_col)s
FROM %(tbl)s
ORDER BY %(sort_by)s
)
UPDATE %(tbl)s _s
SET new_%(uid_col)s = upd.new_uid
FROM upd
WHERE upd.%(uid_col)s = _s.%(uid_col)s;
ALTER TABLE %(tbl)s ALTER COLUMN %(uid_col)s TYPE INTEGER USING new_%(uid_col)s;
ALTER TABLE %(tbl)s DROP COLUMN new_%(uid_col)s;
""" % {'tbl':table_name,'uid_col':uid_col,'sort_by':sort_by}
self.T.to_sql(qry)
def get_function_info(self,func):
q = """
SELECT
proname f_name,
prolang f_lang,
proisagg is_agg,
CASE
WHEN provolatile='v' THEN 'true'
ELSE 'false'
END as is_volatile,
proallargtypes all_arg_type,
proargtypes arg_types,
pronargdefaults arg_defaults,
prorettype return_type,
prosrc src
FROM pg_proc
WHERE proname ilike '%s'
""" % func
q = """
SELECT
fx_schema,fx_name,fx_lang,fx_type
,is_volatile,arg_types,_arg_types,arg_defaults
,return_type,_return_type
,CASE
WHEN fx_description IS NOT NULL THEN
CONCAT(
_fx_src
,'\n\n'
,'COMMENT ON FUNCTION '
,fx_name,'(',_types,') IS \n'
,'''\n'
,fx_description
,'\n'';')
ELSE _fx_src
END fx_src
FROM
(
SELECT
n.nspname fx_schema
,p.proname fx_name
,p.prolang fx_lang
,proisagg is_agg
,CASE
WHEN provolatile='v' THEN 'true'
ELSE 'false'
END is_volatile
,pg_catalog.pg_get_function_arguments(p.oid) arg_types
,p.proargtypes _arg_types
,p.pronargdefaults arg_defaults
,pg_catalog.pg_get_function_result(p.oid) return_type
,p.prorettype _return_type
,CASE
WHEN p.proisagg THEN 'agg'
WHEN p.proiswindow THEN 'window'
WHEN p.prorettype = 'pg_catalog.trigger'::pg_catalog.regtype THEN 'trigger'
ELSE 'normal'
END fx_type
,CONCAT('CREATE OR REPLACE FUNCTION ',p.proname
,'\n\t(\n\t'
,regexp_replace(pg_catalog.pg_get_function_arguments(p.oid)
,E',[ ]?',E',\n\t','gmsi')
,'\n\t)'
,'\nRETURNS ',pg_catalog.pg_get_function_result(p.oid)
,'\nLANGUAGE ',la.lanname
,'\nAS $function$ ',p.prosrc,'$function$;'
) _fx_src
,d.description fx_description
,(
SELECT
ARRAY_TO_STRING(ARRAY_AGG(type_name),',') fx_inputs
FROM (
SELECT
_oid
,r
,t.typname type_name
FROM (
SELECT
v::OID _oid
,ROW_NUMBER() OVER (PARTITION BY true) r
FROM
(
select UNNEST(STRING_TO_ARRAY(p.proargtypes::text,' ')) v
) f1
) f2
INNER JOIN pg_type t ON t.oid=f2._oid
ORDER BY r
) f3
) _types
FROM
pg_catalog.pg_proc p
LEFT JOIN pg_catalog.pg_namespace n ON n.oid = p.pronamespace
FULL JOIN pg_catalog.pg_language la ON la.oid = p.prolang
FULL JOIN pg_description d on p.oid = d.objoid
FULL JOIN pg_type t on p.prorettype = t.oid
WHERE pg_catalog.pg_function_is_visible(p.oid)
AND n.nspname <> 'pg_catalog'
AND n.nspname <> 'information_schema'
AND p.proname ~* '%s'
ORDER BY 1, 2, 4
) f0
""" % func
return self.T.pd.read_sql(q,self.T.eng)
def get_general_function_info(self):
q = """
SELECT
fx_schema,fx_name,fx_lang,fx_type
,is_volatile,arg_types,_arg_types,arg_defaults
,return_type,_return_type
,CASE
WHEN fx_description IS NOT NULL THEN
CONCAT(
_fx_src
,'\n\n'
,'COMMENT ON FUNCTION '
,fx_name,'(',_types,') IS \n'
,'''\n'
,fx_description
,'\n'';')
ELSE _fx_src
END fx_src
FROM
(
SELECT
n.nspname fx_schema
,p.proname fx_name
,p.prolang fx_lang
,proisagg is_agg
,CASE
WHEN provolatile='v' THEN 'true'
ELSE 'false'
END is_volatile
,pg_catalog.pg_get_function_arguments(p.oid) arg_types
,p.proargtypes _arg_types
,p.pronargdefaults arg_defaults
,pg_catalog.pg_get_function_result(p.oid) return_type
,p.prorettype _return_type
,CASE
WHEN p.proisagg THEN 'agg'
WHEN p.proiswindow THEN 'window'
WHEN p.prorettype = 'pg_catalog.trigger'::pg_catalog.regtype THEN 'trigger'
ELSE 'normal'
END fx_type
,CONCAT('CREATE OR REPLACE FUNCTION ',p.proname
,'\n\t(\n\t'
,regexp_replace(pg_catalog.pg_get_function_arguments(p.oid)
,E',[ ]?',E',\n\t','gmsi')
,'\n\t)'
,'\nRETURNS ',pg_catalog.pg_get_function_result(p.oid)
,'\nLANGUAGE ',la.lanname
,'\nAS $function$ ',p.prosrc,'$function$;'
) _fx_src
,d.description fx_description
,(
SELECT
ARRAY_TO_STRING(ARRAY_AGG(type_name),',') fx_inputs
FROM (
SELECT
_oid
,r
,t.typname type_name
FROM (
SELECT
v::OID _oid
,ROW_NUMBER() OVER (PARTITION BY true) r
FROM
(
select UNNEST(STRING_TO_ARRAY(p.proargtypes::text,' ')) v
) f1
) f2
INNER JOIN pg_type t ON t.oid=f2._oid
ORDER BY r
) f3
) _types
FROM
pg_catalog.pg_proc p
LEFT JOIN pg_catalog.pg_namespace n ON n.oid = p.pronamespace
FULL JOIN pg_catalog.pg_language la ON la.oid = p.prolang
FULL JOIN pg_description d on p.oid = d.objoid
FULL JOIN pg_type t on p.prorettype = t.oid
WHERE pg_catalog.pg_function_is_visible(p.oid)
AND n.nspname <> 'pg_catalog'
AND n.nspname <> 'information_schema'
ORDER BY 1, 2, 4
) f0
"""
return self.T.pd.read_sql(q,self.T.eng)
class Create:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def __show_auto_groups(self):
(_out,_err) = self.T.sub_popen('ls -p %s/sql_functions/ | grep "/"' % self.T.pg_classes_pwd,
stdout=self.T.sub_PIPE,
shell=True).communicate()
assert _err is None
print _out
def from_command_line(self,**kwargs):
"""
:param one_directory: The absolute directory path or directory path relative to the primary module
from which the files are loaded in simple sort order. NOTE. IF DEFINED, OTHER PATH PARAMS IGNORED.
:type one_directory: str.
:param one_file: The absolute file path or file path relative to the primary module. NOTE. IF DEFINED, OTHER PATH PARAMS IGNORED.
:type one_file: str.
:param sub_dir: The relative directory to this file.
:type sub_dir: str.
:param grps: A sequence list of relative subdirectories for loading files.
:type grps: list.
:param files: A specific list of files to only load.
:type files: list.
:param regex_exclude: A list of files matching provided regex and excluded from loading.
:type files: list.
:returns: None
"""
def get_psql_path():
p = self.T.sub_popen('; '.join(['unalias psql > /dev/null 2>&1',
'unset psql > /dev/null 2>&1',
'which psql']),
stdout=self.T.sub_PIPE,
shell=True)
(_out, _err) = p.communicate()
assert _err is None
return _out.rstrip('\n')
# Defaults:
one_file = None if not kwargs.has_key('one_file') else kwargs['one_file']
one_directory = None if not kwargs.has_key('one_directory') else kwargs['one_directory']
sub_dir = 'sql_functions'
grps = ['admin','json','strings']
files = ['all']
regex_exclude = [r'(?iLmsux).*/(_[^\/]+)[.]sql$']
for name, value in kwargs.iteritems():
# import ipdb as I; I.set_trace()
if not value.isdigit():
exec '%s = "%s"' % (name, value) in globals(),locals()
else:
exec '%s = %s' % (name, value) in globals(),locals()
cmds = []
# cmd_template = ''.join(['psql -d '+self.T.DB_NAME+' -c "%s ' + '%s/%s' % (self.T.pg_classes_pwd,sub_dir) + '/%s/%s;"'
# sh_cmd_template = 'psql --dbname=%(DB_NAME)s --host=%(DB_HOST)s --port=%(DB_PORT)s --username=%(DB_USER)s --command="%(COMMAND)s"'
sh_cmd_template = ' '.join(['%(PSQL_PATH)s --dbname=%(DB_NAME)s --host=%(DB_HOST)s',
'--port=%(DB_PORT)s --username=%(DB_USER)s --file=%(FPATH)s;'])
D = self.T.config.__dict__
D['PSQL_PATH'] = get_psql_path()
# D['PSQL_PATH'] = "/usr/local/pgsql/bin/psql"
# D['PSQL_PATH'] = "/usr/local/pgsql/bin/psql"
if one_directory:
dir_list=[]
for root, sub_dirs, files in self.T.os.walk(self.T.os.path.abspath(one_directory)):
for f in files:
if not regex_exclude:
dir_list.append(self.T.os.path.join(root,f))
else:
fpath = self.T.os.path.join(root,f)
for regex in regex_exclude:
if type(self.T.re.match(regex,fpath))==self.T.NoneType:
dir_list.append(fpath)
fpaths = sorted(dir_list)
for it in fpaths:
D['FPATH'] = it
cmds.append( sh_cmd_template % D)
elif one_file:
D['FPATH'] = self.T.os.path.abspath(one_file)
cmds.append( sh_cmd_template % D)
else:
files = files if type(files)==list else list(files)
for d in grps:
for f in sorted(self.T.os.listdir('%s/%s/%s' % (self.T.pg_classes_pwd,sub_dir,d))):
if f.count('.sql'):
if files.count(f) or files==['all']:
# cmds.append( cmd_template % ('\\\\\\\\i',d,f) )
D['FPATH'] = ''.join([ '%s/%s' % (self.T.pg_classes_pwd,sub_dir),
'/%s/%s' % (d,f) ])
cmds.append( sh_cmd_template % D )
# -----------
cmds = '\n'.join(cmds)
qry = """
DO E'#!/bin/sh
export PGOPTIONS="--client-min-messages=warning";
%s
unset PGOPTIONS
' LANGUAGE plshu;
""" % cmds
print qry
self.T.to_sql(qry)
def z_next_free(self):
self.F.functions_destroy_z_next_free()
self.F.functions_create_batch_groups(sub_dir='sql_functions',
grps=['admin'],
files=['1_z_next_free.sql'])
def z_get_seq_value(self):
self.F.functions_destroy_z_get_seq_value()
self.F.functions_create_batch_groups(sub_dir='sql_functions',
grps=['admin'],
files=['2_z_get_seq_value.sql'])
def z_array_sort(self):
self.F.functions_destroy_z_array_sort()
self.F.functions_create_batch_groups(sub_dir='sql_functions',
grps=['admin'],
files=['5_z_array_sort.sql'])
def z_make_column_primary_serial_key(self):
self.F.functions_destroy_z_make_column_primary_serial_key()
self.F.functions_create_batch_groups(sub_dir='sql_functions',
grps=['admin'],
files=['6_z_make_column_primary_serial_key.sql'])
def json_functions(self):
self.F.functions_destroy_json_functions()
self.F.functions_create_batch_groups(sub_dir='sql_functions',
grps=['json'],
files=['all'])
def string_functions(self):
self.F.functions_destroy_string_functions()
self.F.functions_from_command_line(sub_dir='sql_functions',
grps=['string'],
files=['all'])
class Destroy:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def z_next_free(self):
c = """
DROP FUNCTION IF EXISTS z_next_free(text, text, text) CASCADE;
"""
self.T.to_sql( qry)
def z_get_seq_value(self):
c = """
DROP FUNCTION IF EXISTS z_get_seq_value(text) CASCADE;
"""
self.T.to_sql( qry)
def z_array_sort(self):
c = """
DROP FUNCTION IF EXISTS z_array_sort(anyarray) CASCADE;
"""
self.T.to_sql( qry)
def z_make_column_primary_serial_key(self):
c = """
DROP FUNCTION IF EXISTS
z_make_column_primary_serial_key(text,text,boolean,boolean,boolean) CASCADE;
"""
self.T.to_sql( qry)
def json_functions(self):
q,q_temp = [],'DROP FUNCTION IF EXISTS %s(%s) CASCADE;'
df = self.F.functions_run_get_general_function_info()
if len(df):
for i,r in df.iterrows():
if str(r.f_name).find('json_')==0:
arg_types = str([str(it.split()[1]) for it in r.arg_types.split(',')]).strip('[]').replace("'",'')
q.append(q_temp % (r.f_name,arg_types))
qry = ' '.join(q)
self.T.to_sql( qry)
def string_functions(self):
q,q_temp = [],'DROP FUNCTION IF EXISTS %s(%s) CASCADE;'
df = self.F.functions_run_get_general_function_info()
for i,r in df.iterrows():
if str(r.f_name).find('z_str_')==0:
arg_types = str([str(it.split()[1]) for it in r.arg_types.split(',')]).strip('[]').replace("'",'')
q.append(q_temp % (r.f_name,arg_types))
qry = ' '.join(q)
print qry
self.T.to_sql( qry)
class pgSQL_Triggers:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
class Exists:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def event_trigger(self,trigger_name):
qry = """
SELECT EXISTS (SELECT 1
FROM pg_event_trigger
WHERE evtname='%s'
AND evtenabled='O');
""" % trigger_name
return self.T.pd.read_sql(qry,self.T.eng).exists[0]
def tbl_trigger(self,trigger_name,tbl_name):
qry = """
SELECT EXISTS (SELECT 1
FROM pg_trigger t
INNER JOIN pg_class c
ON t.tgrelid=c.relfilenode
WHERE NOT tgisinternal
AND relname='%s'
AND tgname ilike '%s');
""" % (trigger_name,tbl_name)
return self.T.pd.read_sql(qry,self.T.eng).exists[0]
class Enabled:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def event_trigger(self,trigger_name):
qry = """
SELECT EXISTS (SELECT 1
FROM pg_event_trigger
WHERE evtname='%s');
""" % trigger_name
return self.T.pd.read_sql(qry,self.T.eng).exists[0]
def tbl_trigger(self,trigger_name,tbl_name):
qry = """
SELECT EXISTS (SELECT 1
FROM pg_trigger t
INNER JOIN pg_class c
ON t.tgrelid=c.relfilenode
WHERE NOT tgisinternal
AND relname='%s'
AND tgname ilike '%s'
AND tgenabled = 'O');
""" % (trigger_name,tbl_name)
return self.T.pd.read_sql(qry,self.T.eng).exists[0]
class Create:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def z_auto_add_primary_key(self):
self.F.triggers_destroy_z_auto_add_primary_key()
self.F.functions_create_z_next_free()
self.F.functions_create_batch_groups(sub_dir='sql_functions',
grps=['admin'],
files=['3_z_auto_add_primary_key.sql'])
def z_auto_add_last_updated_field(self):
self.F.triggers_destroy_z_auto_add_last_updated_field()
self.F.functions_create_batch_groups(sub_dir='sql_functions',
grps=['admin'],
files=['4_z_auto_add_last_updated_field.sql'])
def z_auto_update_timestamp(self,tbl,col):
a="""
DROP FUNCTION if exists z_auto_update_timestamp_on_%(tbl)s_in_%(col)s() cascade;
DROP TRIGGER if exists update_timestamp_on_%(tbl)s_in_%(col)s ON %(tbl)s;
CREATE OR REPLACE FUNCTION z_auto_update_timestamp_on_%(tbl)s_in_%(col)s()
RETURNS TRIGGER AS $$
BEGIN
NEW.last_updated := now();
RETURN NEW;
END;
$$ language 'plpgsql';
CREATE TRIGGER update_timestamp_on_%(tbl)s_in_%(col)s
BEFORE UPDATE OR INSERT ON %(tbl)s
FOR EACH ROW
EXECUTE PROCEDURE z_auto_update_timestamp_on_%(tbl)s_in_%(col)s();
""" % {'tbl':tbl,'col':col}
self.T.conn.set_isolation_level( 0)
self.T.cur.execute( a)
return
class Destroy:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def z_auto_add_primary_key(self):
c = """
DROP FUNCTION IF EXISTS z_auto_add_primary_key() CASCADE;
DROP EVENT TRIGGER IF EXISTS missing_primary_key_trigger CASCADE;
"""
self.T.conn.set_isolation_level(0)
self.T.cur.execute(c)
def z_auto_add_last_updated_field(self):
c = """
DROP FUNCTION IF EXISTS z_auto_add_last_updated_field() CASCADE;
DROP EVENT TRIGGER IF EXISTS missing_last_updated_field CASCADE;
"""
self.T.conn.set_isolation_level(0)
self.T.cur.execute(c)
class Show:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def event_triggers(self):
cmd = "select * from pg_event_trigger"
self.T.to_sql( cmd)
class Operate:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def disable_tbl_trigger(self,tbl,trigger_name):
cmd = "ALTER TABLE %(tbl)s DISABLE TRIGGER %(trig)s;" % {'tbl':tbl,'trig':trigger_name}
self.T.to_sql( cmd)
def enable_tbl_trigger(self,tbl,trigger_name):
if trigger_name=='z_auto_add_primary_key':
trigger_name = 'missing_primary_key_trigger'
cmd = "ALTER TABLE %(tbl)s ENABLE TRIGGER %(trig)s;" % {'tbl':tbl,'trig':trigger_name}
self.T.to_sql( cmd)
def disable_event_trigger(self,trigger_name):
if trigger_name=='z_auto_add_primary_key':
trigger_name = 'missing_primary_key_trigger'
cmd = 'ALTER EVENT TRIGGER %s DISABLE' % trigger_name
self.T.to_sql( cmd)
def enable_event_trigger(self,trigger_name):
cmd = 'ALTER EVENT TRIGGER %s ENABLE' % trigger_name
self.T.to_sql( cmd)
class pgSQL_Tables:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def exists(self,table_name):
qry = """
SELECT EXISTS (SELECT 1
FROM information_schema.tables
WHERE table_schema='public'
AND table_name='%s');
""" % table_name
return self.T.pd.read_sql(qry,self.T.eng).exists[0]
def get_info(self,tbl_name):
qry = """
WITH primary_key_info AS (
SELECT a.attname, format_type(a.atttypid, a.atttypmod) AS data_type_pk
FROM pg_index i
JOIN pg_attribute a ON a.attrelid = i.indrelid
AND a.attnum = ANY(i.indkey)
WHERE i.indrelid = '%s'::regclass
AND i.indisprimary
),
gen_info AS (
SELECT
column_name
,data_type
,udt_name
,character_maximum_length
,column_default
,CASE
WHEN data_type_pk is NULL THEN NULL
ELSE true
END is_primary_key
,is_nullable
FROM INFORMATION_SCHEMA.COLUMNS
LEFT JOIN primary_key_info pk ON pk.attname = column_name
WHERE table_name = '%s'
)
SELECT * FROM gen_info;
""" % (tbl_name,tbl_name)
df = self.T.pd.read_sql(qry,self.T.eng).sort_values('column_name')
for i,r in df[df.column_name=='ARRAY'].iterrows():
df.set_value(i,'data_type','%s[]' % r['udt_name'].strip('_'))
return df
def get_triggers(self,tbl_name):
qry = """
SELECT c.relname tbl_name,
t.tgname trigger_name,
CASE
WHEN t.tgenabled = 'O' THEN true
ELSE false
END AS is_enabled,
tgattr column_triggers,
tgnargs arg_str_cnt,
tgargs arg_strs
FROM pg_trigger t
INNER JOIN pg_class c
ON t.tgrelid=c.relfilenode
WHERE NOT tgisinternal
AND relname='%s';
""" % tbl_name
return self.T.pd.read_sql(qry,self.T.eng)
def has_col(self,table_name,column_name):
qry = """
SELECT EXISTS (
SELECT 1
FROM INFORMATION_SCHEMA.COLUMNS
WHERE table_name = '%s'
AND column_name = '%s'
);
""" % (table_name,column_name)
return self.T.pd.read_sql(qry,self.T.eng).exists[0]
def get_tables_and_indicies(self):
qry = """
SELECT pg_class.relname, pg_attribute.attname
FROM pg_class, pg_attribute, pg_index
WHERE pg_class.oid = pg_attribute.attrelid AND
pg_class.oid = pg_index.indrelid AND
pg_index.indkey[0] = pg_attribute.attnum AND
pg_index.indisprimary = 't' AND
NOT pg_class.relname ILIKE 'pg_%%';
"""
return self.T.pd.read_sql(qry,self.T.eng)
class Update:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
class Create:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def new(self,tbl_name,tbl_dict,drop_if_exists=False):
tbl_cols = ',\n'.join([ '%s %s' % (k,v) for k,v in tbl_dict.iteritems()])
qry = "CREATE TABLE IF NOT EXISTS %s ( %s );" % (tbl_name,tbl_cols)
if drop_if_exists:
qry = "DROP TABLE IF EXISTS %s CASCADE; " % tbl_name + qry
self.T.to_sql( qry)
self.F.functions_run_make_column_primary_serial_key(tbl_name)
# if not self.F.functions_check_primary_key(tbl_name):
# self.F.functions_run_make_column_primary_serial_key(tbl_name,'uid')
class pgSQL_Databases:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def get_all(self):
qry = """
SELECT datname FROM pg_database
WHERE datistemplate = false
"""
return self.T.pd.read_sql(qry,self.T.eng)
class pgSQL_Types:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def exists(self,type_name):
qry = """ SELECT EXISTS (SELECT 1
FROM pg_type
WHERE typname = '%s')
""" % type_name
return self.T.pd.read_sql(qry,self.T.eng).exists[0]
class Create:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def string_dist_results(self):
qry="""
DROP TYPE IF EXISTS string_dist_results cascade;
CREATE TYPE string_dist_results as (
idx integer,
orig_str text,
jaro double precision,
jaro_b text,
leven integer,
leven_b text,
nysiis text,
rating_codex text
);
"""
self.T.to_sql( qry)
class Destroy:
def __init__(self,_parent):
self = _parent.T.To_Sub_Classes(self,_parent)
def string_dist_results(self):
qry="""DROP TYPE IF EXISTS string_dist_results cascade;
"""
self.T.to_sql( qry)
class pgSQL:
def __init__(self,**kwargs):
"""
pgSQL(db_settings=[DB_NAME, DB_USER, DB_PW, DB_HOST, DB_PORT])
"""
def run_cmd(cmd):
p = sub_popen(cmd,stdout=sub_PIPE,
shell=True,
executable='/bin/bash')
(_out,_err) = p.communicate()
assert _err is None
return _out.rstrip('\n')
def download_file(url,save_path):
import os
_dir = save_path[:save_path.rfind('/')]
if not os.path.exists(_dir):
os.makedirs(_dir)
with open(save_path, 'wb') as handle:
response = self.T.requests.get( url, stream=True)
if not response.ok:
# Something went wrong
print 'error'
for block in response.iter_content(1024):
if not block:
break
handle.write(block)
handle.flush()
return True
def read_json_from_url_response(url):
r = self.T.requests.get(url)
assert r.status_code=='200'
# print r.text
g = r.text
g = g.replace('true',"'true'")
a = eval(g)
return a
def to_sql(cmd):
# print(cmd)
self.T.conn.set_isolation_level( 0)
self.T.cur.execute( cmd)
def redirect_logs_to_file(file_desc='/dev/pts/0',msg_form="%(asctime)s - %(levelname)s - %(message)s"):
# print T.logger.__dict__
# print T.logger.manager.__dict__
# for it in dir(logger):
# print it,getattr(logger,it)
for it in self.T.logger.handlers:
self.T.logger.removeHandler(it)
for it in self.T.logger.parent.handlers:
self.T.logger.parent.removeHandler(it)
for it in self.T.logger.root.handlers:
self.T.logger.root.removeHandler(it)
# print logger.manager.__dict__
del_these = ['IPKernelApp','basic_logger']
for it in del_these:
if self.T.logger.manager.__dict__['loggerDict'].has_key(it):
del self.T.logger.manager.__dict__['loggerDict'][it]
for k in self.T.logger.manager.__dict__['loggerDict'].keys():
if k.count('sqlalchemy') or k.count('pandas'):
del self.T.logger.manager.__dict__['loggerDict'][k]
self.T.logging.basicConfig(filename=file_desc, level=self.T.logging.DEBUG, format=msg_form)
return
def custom_geoseries_plot(s,figsize=(8,8)):
# s=T.gd.GeoSeries(A)
colormap='Set1'
axes=None
linewidth=1.0
import matplotlib.pyplot as plt
if axes is None:
fig, ax = plt.subplots(figsize=figsize)
ax.set_aspect('equal')
else:
ax = axes
ax.get_xaxis().get_major_formatter().set_scientific(False)
ax.get_xaxis().get_major_formatter().set_useOffset(False)
plt.xticks(rotation='vertical')
ax.get_yaxis().get_major_formatter().set_scientific(False)
ax.get_yaxis().get_major_formatter().set_useOffset(False)
color = T.gd.plotting.gencolor(len(s), colormap=colormap)
for geom in s:
if geom.type == 'Polygon' or geom.type == 'MultiPolygon':
T.gd.plotting.plot_multipolygon(ax, geom, facecolor=next(color), linewidth=linewidth)
elif geom.type == 'LineString' or geom.type == 'MultiLineString':
T.gd.plotting.plot_multilinestring(ax, geom, color=next(color), linewidth=linewidth)
elif geom.type == 'Point':
T.gd.plotting.plot_point(ax, geom)
plt.ticklabel_format(style='plain')
plt.grid()
plt.draw()
def _load_connectors():
eng = create_engine(r'postgresql://%(DB_USER)s:%(DB_PW)s@%(DB_HOST)s:%(DB_PORT)s/%(DB_NAME)s'
% T,
encoding='utf-8',
echo=False)
conn = pg_connect("dbname='%(DB_NAME)s' host='%(DB_HOST)s' port=%(DB_PORT)s \
user='%(DB_USER)s' password='%(DB_PW)s' "
% T);
cur = conn.cursor()
return eng,conn,cur
import datetime as DT
dt = DT
from dateutil import parser as DU # e.g., DU.parse('some date as str') --> obj(datetime.datetime)
import time
delay = time.sleep
from urllib import quote_plus,unquote
import re
from re import findall as re_findall
from re import sub as re_sub # re_sub('patt','repl','str','cnt')
from re import search as re_search # re_search('patt','str')
import json
from subprocess import Popen as sub_popen
from subprocess import PIPE as sub_PIPE
from traceback import format_exc as tb_format_exc
from sys import exc_info as sys_exc_info
from types import NoneType
from time import sleep as delay
from uuid import uuid4 as get_guid
import requests
from py_classes import To_Sub_Classes,To_Class,To_Class_Dict
T = To_Class(kwargs,recursive=True)
# PUT ALL KWARGS AS T.config
# T.config = To_Class(kwargs,recursive=True)
if hasattr(T,'config') and hasattr(T.config,'pgsql'):
T.__dict__.update( T.config.pgsql.__dict__)
if hasattr(T,'config'):
T.__dict__.update( T.config.__dict__)
if hasattr(T,'db_settings'):
T.__dict__.update( T.db_settings.__dict__)
db_vars = ['DB_NAME','DB_HOST','DB_PORT','DB_USER','DB_PW']
db_vars = [it for it in db_vars if not T._has_key(it)]
# import ipdb as I; I.set_trace()
if not db_vars:
pass
elif locals().keys().count('db_settings'):
DB_NAME,DB_USER,DB_PW,DB_HOST,DB_PORT = db_settings
for it in db_vars:
eval('T["%s"] = %s' % (it,it))
else:
z = eval("__import__('db_settings')")
for it in db_vars:
T[it] = getattr(z,it)
import pandas as pd
pd.set_option( 'expand_frame_repr', False)
pd.set_option( 'display.max_columns', None)
pd.set_option( 'display.max_colwidth', 250)
pd.set_option( 'display.max_rows', 1000)
pd.set_option( 'display.width', 1500)
pd.set_option( 'display.colheader_justify','left')
np = pd.np
np.set_printoptions( linewidth=1500,threshold=np.nan)
# import geopandas as gd