纯 Python 的 etcd3 client

发现没有好用的就自己写了一个

• 基于 etcd3 的 gRPC-JSON-Gateway
• 90% 的测试覆盖率
• 同时兼容 python2 python3
• 提供了 Lock Transaction Watch Lease 等几种 API 设计友好，使用优雅的工具

Github 地址： https://github.com/Revolution1/etcd3-py

文档地址： https://etcd3-py.readthedocs.io/en/latest/

Quick Start

Install

$ pip install etcd3-py 

Sync Client

>>> from etcd3 import Client >>> client = Client('127.0.0.1', 2379) >>> client.version() EtcdVersion(etcdserver='3.3.0-rc.4', etcdcluster='3.3.0') >>> client.put('foo', 'bar') etcdserverpbPutResponse(header=etcdserverpbResponseHeader(cluster_id=11588568905070377092, member_id=128088275939295631, revision=15433, raft_term=4)) >>> client.range('foo').kvs [mvccpbKeyValue(key=b'foo', create_revision=15429, mod_revision=15433, version=5, value=b'bar')] 

Async Client (Python3.5+)

>>> import asyncio >>> from etcd3 import AioClient >>> client = AioClient('127.0.0.1', 2379) >>> async def getFoo(): ... await client.put('foo', 'bar') ... r = await client.range('foo') ... print('key:', r.kvs[0].key, 'value:', r.kvs[0].value) >>> loop = asyncio.get_event_loop() >>> loop.run_until_complete(getFoo()) key: b'foo' value: b'bar' 

Transaction Util

>>> from etcd3 import Client >>> txn = Client().Txn() >>> txn.compare(txn.key('foo').value == 'bar') >>> txn.success(txn.put('foo', 'bra')) >>> txn.commit() etcdserverpbTxnResponse(header=etcdserverpbResponseHeader(cluster_id=11588568905070377092, member_id=128088275939295631, revision=15656, raft_term=4), succeeded=True, respOnses=[etcdserverpbResponseOp(response_put=etcdserverpbPutResponse(header=etcdserverpbResponseHeader(revision=15656)))]) 

Lease Util

>>> from etcd3 import Client >>> client = Client() >>> with client.Lease(ttl=5) as lease: ... client.put('foo', 'bar', lease=lease.ID) ... client.put('fizz', 'buzz', lease=lease.ID) ... r = lease.time_to_live(keys=True) ... assert set(r.keys) == {b'foo', b'fizz'} ... assert lease.alive() 

Watch Util

>>> from etcd3 import Client >>> client = Client() >>> watcher = c.Watcher(all=True, progress_notify=True, prev_kv=True) >>> w.onEvent('f.*', lambda e: print(e.key, e.value)) >>> w.runDaemon() >>> # etcdctl put foo bar >>> # etcdctl put foz bar b'foo' b'bar' b'foz' b'bar' >>> w.stop() 

Lock Util

>>> import time >>> from threading import Thread >>> from etcd3 import Client >>> client = Client() >>> name = 'lock_name' >>> def user1(): ... with client.Lock(name, lock_ttl=5): ... print('user1 got the lock') ... time.sleep(5) ... print('user1 releasing the lock') >>> def user2(): ... with client.Lock(name, lock_ttl=5): ... print('user2 got the lock') ... time.sleep(5) ... print('user2 releasing the lock') >>> t1 = Thread(target=user1, daemon=True) >>> t2 = Thread(target=user2, daemon=True) >>> t1.start() >>> t2.start() >>> t1.join() >>> t2.join() user1 got the lock user1 releasing the lock user2 got the lock user2 releasing the lock 

欢迎使用、顺手 star