如何在使用SVN提交后触发Buildbot中的构建器？

c = BuildmasterConfig = {}

from buildbot.plugins import *

c['change_source'] = []
c['builders'] = []

# 定义一个SVN源代码库
svn_source = sources.SVN(
    baseURL='svn://example.com/myrepo',
    mode=sources.SVN.Update,
    username='your_username',
    password='your_password'
)

# 创建一个构建器
builder = util.BuilderConfig(
    name="my_builder",
    workernames=['worker1', 'worker2'],
    factory=util.BuildFactory(
        steps=[
            # 构建过程的脚本和命令
            steps.ShellCommand(command="make", haltOnFailure=True),
        ]
    )
)

# 添加构建器到builders列表
c['builders'].append(builder)

# 创建一个触发器，并绑定到构建器上
trigger = triggerable.Triggerable(
    name="svn_trigger",
    builderNames=["my_builder"]
)

# 创建一个SVN变化源，用于监控SVN提交
svn_poller = changes.SVNPoller(
    svnurl='svn://example.com/myrepo',
    username='your_username',
    password='your_password',
    project='my_project',
    pollinterval=60
)

# 设置触发器的属性，使其在SVN提交后触发构建器执行
svn_poller.SetProperties(trigger, "svn_property")

# 添加触发器到change_source列表
c['change_source'].append(trigger)