python 中twisted框架如何使用 adbapi连接数据库的

1. 和数据库建立连接

adbapi.ConnectionPool

conn=adbapi.ConnectionPool("MySQLdb",host=MYSQLCONFIG["host"],user=MYSQLCONFIG["user"],passwd=MYSQLCONFIG["passwd"],charset=MYSQLCONFIG["charset"],port=3306)

2.执行异步SQL查询

conn.runQuery

result=yield  conn.runQuery("select ip,tid from yw_cap.task_task WHERE  tid=%s",(tid,))

其返回的结果相当于MySQLdb 的fetchall的结果

3. 执行异步SQL 增删改

conn.runOperation

yield conn.runOperation("update yw_cap.task_task set name=%s, project=%s, app=%s,ip=%s,svnpath=%s,version=%s,svnuser=%s, svnpasswd=%s,info=%s,type=%s,args=%s WHERE  tid=%s",
(name,project,app,ip,svnpath,svnversion,svnuser,svnpasswd,info,_type,args,tid))

返回一个数字， 代表本次SQL操作影响的行数

4.  执行自定义的数据库操作

conn.runInteration

def operate_db(cursor,args):
    cursor.execute('''insert into yw_cap.task_task(name, project, app, ip, addtime, edittime, status, svnpath, version, svnuser, svnpasswd, info, owner, type, args)
                      VALUES(%s,%s,%s,%s,UNIX_TIMESTAMP(),UNIX_TIMESTAMP(),0,%s,%s,%s,%s,%s,%s,%s,%s)''',args)    
    return  cursor.lastrowid
conn=adbapi.ConnectionPool("MySQLdb",host=MYSQLCONFIG["host"],user=MYSQLCONFIG["user"],passwd=MYSQLCONFIG["passwd"],charset=MYSQLCONFIG["charset"],port=3306)
tid=yield conn.runInteraction(operate_db,(name,project,app,ip,svnpath,svnversion,svnuser,svnpasswd,info,owner,_type,args))