如何通过Python将blob数据移动到Snowflake

我正在尝试将数据从ADLS blob移动到雪花表

我可以用UI做同样的事情

用户界面所遵循的步骤：

生成了以下SAS令牌：

sp=rl&st=2021-06-01T05:45:37Z&se=2021-06-01T13:45:37Z&spr=https&sv=2020-02-10&sr=c&sig=rYYY4o%2YY3jj%2XXXXXAB%2Bo8ygrtyAVCnPOxomlOc%3D

能够在Snowflake Web UI中加载具有上述令牌的表：

copy into FIRST_LEVEL.MOVIES
  from 'azure://adlsedmadifpoc.blob.core.windows.net/airflow-dif/raw-area/'
  credentials=(azure_sas_token='sp=rl&st=2021-06-01T05:45:37Z&se=2021-06-01T13:45:37Z&spr=https&sv=2020-02-10&sr=c&sig=rYYY4o%2YY3jj%2XXXXXAB%2Bo8ygrtyAVCnPOxomlOc%3D')
   FORCE = TRUE file_format = (TYPE = CSV);

我正试图用Python做同样的事情：

from azure.storage.blob import BlobServiceClient,generate_blob_sas,BlobSasPermissions
from datetime import datetime,timedelta
import snowflake.connector

def generate_sas_token(file_name):

    sas = generate_blob_sas(account_name="xxxx",
account_key="p5V2GELxxxxQ4tVgLdj9inKwwYWlAnYpKtGHAg==", container_name="airflow-dif",blob_name=file_name,permission=BlobSasPermissions(read=True),
expiry=datetime.utcnow() + timedelta(hours=2))
    print (sas)
    return sas

sas = generate_sas_token("raw-area/moviesDB.csv")

# Connectio string

conn = snowflake.connector.connect(user='xx',password='xx@123',account='xx.southeast-asia.azure',database='xx')

# Create cursor

cur = conn.cursor()
cur.execute(
            f"copy into FIRST_LEVEL.MOVIES FROM  'azure://xxx.blob.core.windows.net/airflow-dif/raw-area/moviesDB.csv'   credentials=(azure_sas_token='{sas}')  file_format = (TYPE = CSV) ;")
cur.execute(f" Commit  ;")
# Execute SQL statement
cur.close()
conn.close()

在代码中生成的SAS令牌：

se=2021-06-01T07%3A42%3A11Z&sp=rt&sv=2020-06-12&sr=b&sig=ZhZMPSI%yyyyAPTqqE0%3D

通过python生成sas令牌时，我无法使用列表权限

我面临以下错误：

    cursor=cursor,
snowflake.connector.errors.ProgrammingError: 091003 (22000): Failure using stage area. Cause: [Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature. (Status Code: 403; Error Code: AuthenticationFailed)]

我可能有csv文件列表在该文件夹中

---

谢谢你的帮助。谢谢。

以下代码正常工作：

from azure.storage.blob import generate_container_sas, ContainerSasPermissions
from datetime import datetime,timedelta
import snowflake.connector

def get_sas_token():
    container_sas_token = generate_container_sas(
        account_name = 'XX',
        account_key = 'p5V2GEL3AqGuPMMYXXXQ4tVgLdj9inKwwYWlAnYpKtGHAg==',
        container_name = 'airflow-dif',
        permission=ContainerSasPermissions(read=True,list=True),
        expiry=datetime.utcnow() + timedelta(hours=1)
    )
    print (container_sas_token)
    return container_sas_token

sas = get_sas_token()

# Connectio string

conn = snowflake.connector.connect(user='XX',password='XX@123',account='XX.southeast-asia.azure',database='XX')

# Create cursor

cur = conn.cursor()
cur.execute(
            f"copy into FIRST_LEVEL.MOVIES FROM  'azure://XX.blob.core.windows.net/airflow-dif/raw-area/'   credentials=(azure_sas_token='{sas}')  FORCE = TRUE file_format = (TYPE = CSV) ;")

    
print (cur.fetchone())
cur.execute(f" Commit  ;")

# Execute SQL statement

cur.close()
conn.close()

---

感谢Gaurav的支持。

如果要为blob创建SAS令牌，则不需要

List

权限。如果您正在为blob容器创建SAS令牌，并且需要列出该blob容器中的blob，则需要该标记<代码>读取权限应足以读取blob或获取其属性。我没有任何添加列表权限的选项。BlobSasPermissions（read=True，list=True）不起作用正如我所说的，当为blob创建SAS令牌时，您不能拥有list权限。您可以使用和为具有列表权限的容器创建SAS令牌。