class OdpsConn(object):
"""
odps 连接
"""
def __init__(self, project):
self.access_id = ODPSCONF.key
self.access_key = ODPSCONF.sec
self.project = project
self.odps = None
def __enter__(self):
try:
self.odps = ODPS(self.access_id, self.access_key, self.project)
except Exception as exc:
raise ValueError(exc.message)
return self
def __exit__(self, exc_type, exc_val, exc_tb):
del self
def get_table_count_and_names(self):
"""
获取一个项目下的table的数量和table的名字
:return:
"""
tables = self.odps.list_tables()
names = [table.name for table in tables]
count = len(names)
return count, names
def get_table_schema(self, tname):
"""
获取表字段
:return:
"""
table = self.odps.get_table(tname)
_sa = table.schema
_columns = _sa.columns
schema = [item.name for item in _columns]
return schema
def execute_sql(self, sql):
rest = []
with self.odps.execute_sql(sql).open_reader() as reader:
for record in reader:
rest.append(record.values)
return rest
def get_table_last_update_time(self, tname):
t = self.odps.get_table(tname)
last_update_time = t.last_modified_time if t else None
return last_update_time
def count_table(self, table):
sql = 'select count(1) from %s' % table
with self.odps.execute_sql(sql).open_reader() as reader:
return reader[0].values[0]
2、源端的表在目标端不存在则不校验该表，源端的分区在目标端不存在则不校验该分区
3、用法：python 脚本.py 源项目名称 目标项目名称
'''
s = ODPS('',
'',
'%s' % sys.argv[1],
endpoint='http://service.cn.maxcompute.aliyun.com/api')
d = ODPS('',
'',
'%s' % sys.argv[2],
endpoint='http://service.cn.maxcompute.aliyun.com/api')
print("######################################################################")
for table in s.list_tables():
t1 = s.get_table(table.name)
if d.exist_table(table.name):
t2 = d.get_table(table.name)
else:
print("表%s 在目标项目%s中不存在 跳过校验" % (table.name, sys.argv[2]))
continue
if table.schema.partitions: #判断该表是否为分区表
#print 'Table %s is partitioned.' %table.name
for partition in table.partitions:
#print partition.name
with t1.open_reader(partition='%s' % partition.name) as reader:
count1 = reader.count
#print "表名：%s\t分区：%s\t数据量：%s" %(table.name,partition.name,count1)
if t2.exist_partition(partition.name):
# coding=utf-8
__author__ = 'zhangteng'
from odps import ODPS
from config import ODPSCONF
O = ODPS(ODPSCONF.key,
ODPSCONF.sec,
'sync_data',
endpoint='http://service.odps.aliyun.com/api')
f = open('odps_ddl_1208.txt', 'a')
i = 1
s = ''
for t in O.list_tables():
print(i, t.name)
s += "\n\n%s.\t%s\t%s\n" % (i, t.name, t.comment)
s += t.schema.get_table_ddl().replace('table_name', t.name)
i += 1
if i % 5 == 0:
f.write(s)
s = ''
f.write(s)
f.close()
from odps import ODPS
o = ODPS('accesskey',
'xxxxxx',
project='DWLabClone_67226234odps',
endpoint='http://service.cn-shanghai.maxcompute.aliyun.com/api')
project = o.get_project()
print(project)
for table in o.list_tables():
print(table)
t = o.get_table('ods_user_info_d')
for record in t.head(3):
print(record)
print(next(t.partitions))
with t.open_reader(partition="dt=20210706") as reader:
count = reader.count
print(count)
for record in reader[5:7]:
print(record)
print(type(record))
print(record['uid'])
print(record['age_range'])
print('*' * 100)
t_rpt = o.get_table('rpt_user_info_d')
# for record in t_rpt.head(3):
# print(record)
class myOdps:
# 初始化一个odps连接对象
def __init__(self, access_id, secret_access_key, project):
self.odps = ODPS(access_id=access_id,
secret_access_key=secret_access_key,
project=project,
end_point="http://service.odps.aliyun.com/api")
# 获取所有表名
def get_all_tabel(self):
# return 返回所有的表名
table_name = []
for table in self.odps.list_tables():
table_name.append(table.name)
return table_name
# 创建一张表
def creat_table(self, table_name, columns=None, if_not_exists=True):
# table_name: 表名
# columns : ('num bigint, num2 double', 'pt string') 字段和分组的元组
# if_not_exists:True 不存在才创建
# lifecycle:28 生命周期
# return 返回表对象
try:
return self.odps.create_table(table_name,
columns,
if_not_exists=if_not_exists)
except:
return self.odps.get_table(table_name)
# 通过表名直接获取一张表
def get_a_table(self, table_name):
# table_name: 表名
# return 返回表对象
return self.odps.get_table(table_name)
# 删除一张表
def drop_a_table(self, table_name):
# table_name: 表名
# return 返回表删除结果
return self.odps.delete_table(table_name)
# 获取一张表的所有分区
def get_partitions(self, table):
# table:表对象
# return: 表的所有分区
partitions = []
for partition in table.partitions:
partitions.append(partition.name)
return partitions
# ============= 数据上传 ============
# 上传csv到odps并创建表，csv必须要有表头
def uploadCSV(self, csvFilename, tableName, sep=",", pt=None):
"""
:param csvFilename: 传入本地csv的路径，必须要有表头
:param tableName: 上传到odps时的表名
:param sep: csv的分隔符
:param pt: 是否创建分区
"""
print("start upload ...\n")
df = pd.read_csv(csvFilename, sep=sep)
shape0 = df.shape[0]
columns = [
Column(name=f"{x}", type='string', comment='the column')
for x in df.columns
]
if pt:
partitions = [
Partition(name='pt', type='string', comment='the partition')
]
schema = Schema(columns=columns, partitions=partitions)
table = self.creat_table(tableName, schema)
table.create_partition(f"pt={pt}", if_not_exists=True)
table_columns = [i.name for i in table.schema.columns]
with table.open_writer(partition=f"pt={pt}") as writer:
for index in df.index:
print(f"{index+1}/{shape0} in {tableName} ...")
item_dict = dict(df.loc[index])
item = []
for field in table_columns[:-1]:
item.append(item_dict.get(field, ''))
item.append(pt)
writer.write(item)
else:
schema = Schema(columns=columns)
table = self.creat_table(tableName, schema)
table_columns = [i.name for i in table.schema.columns]
with table.open_writer(partition=None) as writer:
for index in df.index:
print(f"{index+1}/{shape0} in {tableName} ...")
item_dict = dict(df.loc[index])
item = []
for field in table_columns[:-1]:
item.append(item_dict.get(field, ''))
writer.write(item)
print("\n\n upload finish ...")
# 上传的过程中并进行下载，下载完再上传完整的数据,数据行的坐标为1的字段为下载地址
def downloaAndUp(self,
csvFilename,
tableName,
sep=",",
urlIndex=1,
pt=None):
"""
:param csvFilename: 传入本地csv的路径，必须要有表头
:param tableName: 上传到odps时的表名
:param sep: csv的分隔符
:param urlIndex: url字段的坐标位置
"""
print("start upload ...\n")
f = open(csvFilename, encoding='utf-8')
first_line = f.readlines(1)[0].strip('\n').split(sep)
columns = [
Column(name=f"{x}", type='string', comment='the column')
for x in first_line
]
if pt:
partitions = [
Partition(name='pt', type='string', comment='the partition')
]
schema = Schema(columns=columns, partitions=partitions)
table = self.creat_table(tableName, schema)
table.create_partition(f"pt={pt}", if_not_exists=True)
with table.open_writer(partition=f"pt={pt}") as writer:
for index, line in enumerate(f):
print(f"{index} in {tableName} ...")
item = line.strip('\n').split(sep)
item.append(pt)
resp = download(item[urlIndex])
data = resp.text
if sys.getsizeof(data) <= 8 * 1024 * 1000:
item[urlIndex] = data
else:
print(f"failed in {item[0]}")
writer.write(item)
else:
schema = Schema(columns=columns)
table = self.creat_table(tableName, schema)
with table.open_writer(partition=None) as writer:
for index, line in enumerate(f):
print(f"{index} in {tableName} ...")
item = line.strip('\n').split(sep)
resp = download(item[urlIndex])
data = resp.text
if sys.getsizeof(data) <= 8 * 1024 * 1000:
item[urlIndex] = data
else:
print(f"failed in {item[0]}")
writer.write(item)
print("\n\n upload finish ...")
f.close()
# ===========执行sql=========
# sql查询
def select_sql(self, sql):
# return: 查询结果的迭代对象
with self.odps.execute_sql(sql).open_reader() as reader:
return reader
from odps.df import DataFrame
from odps.types import Schema, Record
odps = ODPS('',
'PtMa1T01Nq0y2da8SBl0FRMmgxjE8X',
'GyyStatistical',
endpoint='https://service.odps.aliyun.com/api')
# 取到某个项目
project = odps.get_project('GyyStatistical')
# 取到默认项目
# project = odps.get_project()
# 列出项目下所有的表
print('----列出项目下所有的表 start----')
for table in odps.list_tables():
print(table)
print('----列出项目下所有的表 end----\n')
print('----同步方式 执行SQL语句 start----')
instance = odps.execute_sql('select * from ots_arealist1')
with instance.open_reader() as reader:
for record in reader:
print(record)
print(type(record))
print('----同步方式 执行SQL语句 end----\n')
# print('----异步方式 执行SQL语句 start----')
# instance = odps.run_sql('select * from ots_arealist')
# instance.wait_for_success()
# with instance.open_reader() as reader: