clickhouse_backupview

一个 Python 模块，用于帮助分析由 BACKUP 命令创建的备份。主要动机是允许在不实际恢复备份的情况下从备份中获取一些信息。

此模块提供以下功能：

• 枚举备份中包含的文件
• 从备份中读取文件
• 以可读的形式获取有关备份中包含的数据库、表和部分的有用信息
• 检查备份的完整性

示例：

from clickhouse_backupview import open_backup, S3, FileInfo

# Open a backup. We could also use a local path:
# backup = open_backup("/backups/my_backup_1/")
backup = open_backup(S3("uri", "access_key_id", "secret_access_key"))

# Get a list of databasess inside the backup.
print(backup.get_databases()))

# Get a list of tables inside the backup,
# and for each table its create query and a list of parts and partitions.
for db in backup.get_databases():
    for tbl in backup.get_tables(database=db):
        print(backup.get_create_query(database=db, table=tbl))
        print(backup.get_partitions(database=db, table=tbl))
        print(backup.get_parts(database=db, table=tbl))

# Extract everything from the backup.
backup.extract_all(table="mydb.mytable", out='/tmp/my_backup_1/all/')

# Extract the data of a specific table.
backup.extract_table_data(table="mydb.mytable", out='/tmp/my_backup_1/mytable/')

# Extract a single partition.
backup.extract_table_data(table="mydb.mytable", partition="202201", out='/tmp/my_backup_1/202201/')

# Extract a single part.
backup.extract_table_data(table="mydb.mytable", part="202201_100_200_3", out='/tmp/my_backup_1/202201_100_200_3/')

有关更多示例，请参阅 测试。