|
| 1 | +#!/usr/bin/env python3 |
| 2 | +importasyncio |
| 3 | +importuvloop |
| 4 | +importaiopg |
| 5 | +importrandom |
| 6 | +importpsycopg2 |
| 7 | +importtime |
| 8 | +importaioprocessing |
| 9 | +importmultiprocessing |
| 10 | + |
| 11 | +classMtmTxAggregate(object): |
| 12 | + |
| 13 | +def__init__(self,name): |
| 14 | +self.name=name |
| 15 | +self.clear_values() |
| 16 | + |
| 17 | +defclear_values(self): |
| 18 | +self.max_latency=0.0 |
| 19 | +self.running_latency=0.0 |
| 20 | +self.finish= {} |
| 21 | + |
| 22 | +defadd_finish(self,name): |
| 23 | +ifnamenotinself.finish: |
| 24 | +self.finish[name]=1 |
| 25 | +else: |
| 26 | +self.finish[name]+=1 |
| 27 | + |
| 28 | +classMtmClient(object): |
| 29 | + |
| 30 | +def__init__(self,dsns,n_accounts=100000): |
| 31 | +self.n_accounts=n_accounts |
| 32 | +self.dsns=dsns |
| 33 | + |
| 34 | +self.aggregates= [MtmTxAggregate('transfer'),MtmTxAggregate('transfer'),MtmTxAggregate('transfer')] |
| 35 | +self.initdb() |
| 36 | + |
| 37 | +definitdb(self): |
| 38 | +conn=psycopg2.connect(self.dsns[0]) |
| 39 | +cur=conn.cursor() |
| 40 | +cur.execute('create extension if not exists multimaster') |
| 41 | +conn.commit() |
| 42 | +cur.execute('drop table if exists bank_test') |
| 43 | +cur.execute('create table bank_test(uid int primary key, amount int)') |
| 44 | +cur.execute(''' |
| 45 | + insert into bank_test |
| 46 | + select *, 0 from generate_series(0, %s)''', |
| 47 | + (self.n_accounts,)) |
| 48 | +conn.commit() |
| 49 | +cur.close() |
| 50 | +conn.close() |
| 51 | + |
| 52 | +asyncdefstatus(self): |
| 53 | +whileTrue: |
| 54 | +msg=awaitself.child_pipe.coro_recv() |
| 55 | +ifmsg=='status': |
| 56 | +self.child_pipe.send(self.aggregates) |
| 57 | +foraggregateinself.aggregates: |
| 58 | +aggregate.clear_values() |
| 59 | + |
| 60 | +asyncdeftransfer(self,i): |
| 61 | +pool=awaitaiopg.create_pool(self.dsns[i]) |
| 62 | +asyncwithpool.acquire()asconn: |
| 63 | +asyncwithconn.cursor()ascur: |
| 64 | +whileTrue: |
| 65 | +amount=1 |
| 66 | +from_uid=random.randint(1,self.n_accounts-1) |
| 67 | +to_uid=random.randint(1,self.n_accounts-1) |
| 68 | + |
| 69 | +try: |
| 70 | +awaitcur.execute('begin') |
| 71 | +awaitcur.execute('''update bank_test |
| 72 | + set amount = amount - %s |
| 73 | + where uid = %s''', |
| 74 | + (amount,from_uid)) |
| 75 | +awaitcur.execute('''update bank_test |
| 76 | + set amount = amount + %s |
| 77 | + where uid = %s''', |
| 78 | + (amount,to_uid)) |
| 79 | +awaitcur.execute('commit') |
| 80 | + |
| 81 | +self.aggregates[i].add_finish('commit') |
| 82 | +exceptpsycopg2.Errorase: |
| 83 | +awaitcur.execute('rollback') |
| 84 | +self.aggregates[i].add_finish(e.pgerror) |
| 85 | + |
| 86 | +asyncdeftotal(self,i): |
| 87 | +pool=awaitaiopg.create_pool(self.dsns[i]) |
| 88 | +asyncwithpool.acquire()asconn: |
| 89 | +asyncwithconn.cursor()ascur: |
| 90 | +whileTrue: |
| 91 | + |
| 92 | +try: |
| 93 | +awaitcur.execute('select sum(amount) from bank_test') |
| 94 | + |
| 95 | +if'commit'notinself.tps_vector[i]: |
| 96 | +self.tps_vector[i]['commit']=1 |
| 97 | +else: |
| 98 | +self.tps_vector[i]['commit']+=1 |
| 99 | +exceptpsycopg2.Errorase: |
| 100 | +awaitcur.execute('rollback') |
| 101 | +ife.pgerrornotinself.tps_vector[i]: |
| 102 | +self.tps_vector[i][e.pgerror]=1 |
| 103 | +else: |
| 104 | +self.tps_vector[i][e.pgerror]+=1 |
| 105 | + |
| 106 | +defrun(self): |
| 107 | +asyncio.set_event_loop_policy(uvloop.EventLoopPolicy()) |
| 108 | +self.loop=asyncio.get_event_loop() |
| 109 | + |
| 110 | +fori,_inenumerate(self.dsns): |
| 111 | +asyncio.ensure_future(self.transfer(i)) |
| 112 | +# asyncio.ensure_future(self.total(i)) |
| 113 | + |
| 114 | +asyncio.ensure_future(self.status()) |
| 115 | + |
| 116 | +self.loop.run_forever() |
| 117 | + |
| 118 | +defbgrun(self): |
| 119 | +print('Starting evloop in different process'); |
| 120 | + |
| 121 | +self.parent_pipe,self.child_pipe=aioprocessing.AioPipe() |
| 122 | + |
| 123 | +self.evloop_process=multiprocessing.Process(target=self.run,args=()) |
| 124 | +self.evloop_process.start() |
| 125 | + |
| 126 | +defget_status(self): |
| 127 | +c.parent_pipe.send('status') |
| 128 | +returnc.parent_pipe.recv() |
| 129 | + |
| 130 | + |
| 131 | +c=MtmClient(['dbname=postgres user=stas host=127.0.0.1', |
| 132 | +'dbname=postgres user=stas host=127.0.0.1 port=5433', |
| 133 | +'dbname=postgres user=stas host=127.0.0.1 port=5434'],n_accounts=1000) |
| 134 | +# c = MtmClient(['dbname=postgres user=stas host=127.0.0.1']) |
| 135 | +c.bgrun() |
| 136 | + |
| 137 | +whileTrue: |
| 138 | +time.sleep(1) |
| 139 | +aggs=c.get_status() |
| 140 | +foragginaggs: |
| 141 | +print(agg.finish) |
| 142 | + |