backpressure_detection=_DEFAULT,
blocked_connection_timeout=_DEFAULT,
client_properties=_DEFAULT,
tcp_options=_DEFAULT,**kwargs):"""Create a new ConnectionParameters instance. See `Parameters` for
default values.
:param str host: Hostname or IP Address to connect to
:param int port: TCP port to connect to
:param str virtual_host: RabbitMQ virtual host to use
:param pika.credentials.Credentials credentials: auth credentials
:param int channel_max: Maximum number of channels to allow
:param int frame_max: The maximum byte size for an AMQP frame
:param int heartbeat: Heartbeat timeout. Max between this value
and server's proposal will be used as the heartbeat timeout. Use 0
to deactivate heartbeats and None to accept server's proposal.
:param bool ssl: Enable SSL
:param dict ssl_options: None or a dict of arguments to be passed to
ssl.wrap_socket
:param int connection_attempts: Maximum number of retry attempts
:param int|float retry_delay: Time to wait in seconds, before the next
:param int|float socket_timeout: Use for high latency networks
:param str locale: Set the locale value
:param bool backpressure_detection: DEPRECATED in favor of
`Connection.Blocked` and `Connection.Unblocked`. See
`Connection.add_on_connection_blocked_callback`.
:param blocked_connection_timeout: If not None,
the value is a non-negative timeout, in seconds, for the
connection to remain blocked (triggered by Connection.Blocked from
broker); if the timeout expires before connection becomes unblocked,
the connection will be torn down, triggering the adapter-specific
mechanism for informing client app about the closed connection (
e.g., on_close_callback or ConnectionClosed exception) with
`reason_code` of `InternalCloseReasons.BLOCKED_CONNECTION_TIMEOUT`.
:type blocked_connection_timeout: None, int, float
:param client_properties: None or dict of client properties used to
override the fields in the default client properties reported to
RabbitMQ via `Connection.StartOk` method.
:param heartbeat_interval: DEPRECATED; use `heartbeat` instead, and
don't pass both
:param tcp_options: None or a dict of TCP options to set for socket"""
def __init__(self, #pylint: disable=R0913,R0914,R0912host=_DEFAULT,port=_DEFAULT,virtual_host=_DEFAULT,credentials=_DEFAULT,channel_max=_DEFAULT,frame_max=_DEFAULT,heartbeat=_DEFAULT,ssl=_DEFAULT,ssl...
在消费
rabbitMQ
队列时, 每次进入回调函数内需要进行一些比较耗时的操作;操作完成后给
rabbitMQ
server发送ack信号以dequeue本条消息。
问题就发生在发送ack操作时, 程序提示
链接
已被断开或socket error。
#!/usr/bin
#coding: utf-8
import
pika
import time
USER = 'guest'
PWD = 'guest'
TEST_QUEUE = 'just4test'
def callback(ch, method, properties, body):
print(body)
time.
本文主要是介绍Go,从语言对比分析的角度切入。之所以选择与
Python
、Erlang对比,是因为做为高级语言,它们语言特性上有较大的相似性,不过最主要的原因是这几个我比较熟悉。
Go的很多语言特性借鉴与它的三个祖先:C,Pascal和CSP。Go的语法、数据类型、控制流等继承于C,Go的包、面对对象等思想来源于Pa...
使用
Pika
连接
rabbitmq
集群
使用
python
编程经常会用到
pika
来向
rabbitmq
发送消息,单个
rabbitmq
节点连接比较简单,本文介绍
使用
rabbitmq
集群情况下的连接方式。
vip 连接方式
在 client 与
rabbitmq
server 之间通过 haproxy 等负载均衡来提供 vip,我
使用
的环境就是采用这种方式,但是遇到某一节点挂掉...