{"id":480,"date":"2020-01-05T12:16:53","date_gmt":"2020-01-05T04:16:53","guid":{"rendered":"https:\/\/kaispace.cn\/?p=480"},"modified":"2020-01-05T12:16:53","modified_gmt":"2020-01-05T04:16:53","slug":"%e5%85%b3%e4%ba%8epython%e5%88%86%e5%b8%83%e5%bc%8f%e8%b0%83%e5%ba%a6%e6%a8%a1%e5%9d%97celery%e7%9a%84%e7%ac%94%e8%ae%b0","status":"publish","type":"post","link":"https:\/\/blog.kaispace.cn\/?p=480","title":{"rendered":"\u5173\u4e8ePython\u5206\u5e03\u5f0f\u8c03\u5ea6\u6a21\u5757Celery\u7684\u7b14\u8bb0"},"content":{"rendered":"

Celery \u7b14\u8bb0<\/h1>\n

1.\u9996\u5148\u6267\u884c\u9700\u8981\u5728\u9879\u76ee\u76ee\u5f55\u4e0b\uff0c\u6bcf\u4e2aworker\u90fd\u9700\u8981\u4e00\u4efd\u6ce8\u518c\u4ee3\u7801\u4ee5\u53ca\u4efb\u52a1\u7684\u4ee3\u7801<\/h3>\n
from __future__ import absolute_import\nfrom celery import Celery\napp = Celery('src', include=['src.task'])# \u8fd9\u91cc\u7533\u660e\u4e86\u4ee3\u7801\u5728src\u76ee\u5f55\u4e0b\uff0c\u4efb\u52a1\u811a\u672c\u5305\u62ec\u4e86src\u4e0b\u7684task.py\n\napp.config_from_object('src.celeryconfig')# \u989d\u5916\u7684\u914d\u7f6epython\u811a\u672c\n\nif __name__ == '__main__':\n    app.start()\n<\/code><\/pre>\n
2.\u4efb\u52a1\u811a\u672c\u9700\u8981\u6ce8\u89e3@app.task, \u6784\u9020\u4e00\u4e9b\u6267\u884c\u76f8\u5173\u51fd\u6570<\/h3>\n
from __future__ import absolute_import\nimport time\nfrom src.app import app\nfrom celery import chain, chord\n\n\n@app.task\ndef add(x, y):\n    return x,y\n<\/code><\/pre>\n
3. \u4efb\u52a1\u7684\u6267\u884c<\/h3>\n
\u4ee5\u4e0b\u4e24\u79cd\u90fd\u53ef\u4ee5\u9a71\u52a8\u4efb\u52a1\u7684\u6267\u884c, \u533a\u522b\u5c31\u662fdelay\u662f\u7b80\u5316\u7248\nadd.delay()\nadd.apply_async()\napply_async\u5728delay\u7684\u57fa\u7840\u4e0a\u652f\u6301\u4f20\u9012\u63a7\u5236\u4efb\u52a1\u6267\u884c\u76f8\u5173\u719f\u6089\u5982\u4e0b\n<\/code><\/pre>\n\n\n\n\n\n\n\n\n\n
arg<\/th>\n\u4f5c\u7528<\/th>\n<\/tr>\n<\/thead>\n
link<\/td>\n\u8be5\u53c2\u6570\u63a5\u6536\u4e00\u4e2a\u56de\u8c03\u51fd\u6570\u6216\u8005\u51fd\u6570\u5217\u8868\uff0c\u5c06\u5728\u4e3b\u4efb\u52a1\u5b8c\u6210\u540e\u6267\u884c<\/td>\n<\/tr>\n
link_error<\/td>\n\u8be5\u53c2\u6570\u63a5\u6536\u4e00\u4e2a\u56de\u8c03\u51fd\u6570\u6216\u8005\u51fd\u6570\u5217\u8868\uff0c\u5c06\u5728\u4e3b\u4efb\u52a1\u6267\u884c\u51fa\u9519\u540e\u6267\u884c<\/td>\n<\/tr>\n
countdown<\/td>\n\u63a5\u6536\u4e00\u4e2a\u6570\u5b57\uff0c\u4efb\u52a1\u5c06\u5728countdown\u79d2\u540e\u6267\u884c<\/td>\n<\/tr>\n
eta<\/td>\n\u63a5\u6536\u4e00\u4e2adatetime\u5bf9\u8c61\uff0c\u4efb\u52a1\u5c06\u5728\u8be5\u65f6\u95f4\u6267\u884c<\/td>\n<\/tr>\n
expires<\/td>\n\u63a5\u6536\u4e00\u4e2a\u6570\u5b57\u6216\u8005datetime\u5bf9\u8c61\uff0c\u4efb\u52a1\u7684\u5230\u671f\u65f6\u95f4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u8fd9\u91cc\u8fd8\u6709\u4e00\u4e2a\u6982\u5ff5\u5c31\u505a\u7b7e\u540dSignatures,\u4ee5\u4e0b\u65b9\u5f0f\u90fd\u4f1a\u8fd4\u56deSignatures\nadd.subtask((2, 2), {'debug': True}, countdown=10)\nadd.s()\nadd.si()\n\ns() \u662f subtask() \u7684\u8bed\u6cd5\u7cd6\nsi() \u662f s(immutable=True) \u7684\u8bed\u6cd5\u7cd6\nimmutable\u7684\u610f\u601d\u662f\u4e0d\u63a5\u6536\u4e0a\u4e00\u8f6e\u6b21\u7684\u4efb\u52a1\u7ed3\u679c\u4f5c\u4e3a\u672c\u8f6e\u4efb\u52a1\u7684\u8f93\u5165\n\nSignatures\u7684\u4f5c\u7528\u662f\u5728task,\u5982add()\u7684\u57fa\u7840\u4e0a\u5c01\u88c5\u9644\u5e26\uff0c\u81ea\u5e26\u4e00\u4e9b\u53c2\u6570\n\u5982subtask((2, 2), {'debug': True}, countdown=10)\u610f\u601d\u5c31\u662f\u5df2\u7ecf\u586b\u6ee1\u4e86\nadd\u51fd\u6570\u6240\u9700\u8981\u7684x,y\u53c2\u6570(args),\u5e76\u4f20\u9012debug=True(kwargs),\u4efb\u52a1\u5728\u542f\u52a8\u540e10\u79d2\u6b63\u5f0f\u6267\u884c\n<\/code><\/pre>\n
4. \u4efb\u52a1\u7684\u7ed3\u679c\u83b7\u53d6<\/h3>\n
add.delay()\nadd.apply_async()\n\u90fd\u4f1a\u8fd4\u56de\u4e00\u4e2aAsyncResult\u7684\u5b9e\u4f8b\uff0c\u901a\u8fc7\u8fd9\u4e2a\u5b9e\u4f8b\u7684get()\u83b7\u53d6\u7ed3\u679c, \u6216\u8005collect() \u83b7\u53d6\u5168\u94fe\u7ed3\u679c\n\u901a\u8fc7ready() \u7b49\u7b49\u51fd\u6570\u53ef\u83b7\u53d6\u4efb\u52a1\u6267\u884c\u72b6\u6001\n<\/code><\/pre>\n
5. \u4efb\u52a1\u7684\u5e76\u53d1\uff0c\u4e32\u884c\u6267\u884c<\/h3>\n
\u5e76\u53d1\u6267\u884c\u63a8\u8350\u4f7f\u7528\ngroup(add.s(2, 2), add.s(4, 4)).apply_async()\n\u8fd9\u91cc\u7684\u610f\u601d\u662f\u6240\u6709group\u5185\u4efb\u52a1\u90fd\u4f1a\u540c\u65f6\u6267\u884c\n\n\u5e76\u53d1\u6709\u56de\u8c03\u8981\u6c42\uff0c\u6216\u4e32\u884c\u4efb\u52a1\u5e26\u989d\u5916\u6761\u4ef6\u5224\u65ad\u63a8\u8350\u4f7f\u7528\nchord(add.s(i, i)for i in xrange(10))(tsum.s()).get()\n\u8fd9\u91cc\u662f\u8ba1\u7b971+1+2+2+...+10+10\u7684\u4efb\u52a1\uff0c\u5206\u89e3\u5f00\u6765\u5c31\u662f\u5148\u6267\u884c1+1,2+2,3+3...\uff0c\u5168\u90e8\u5b8c\u6210\u540e\u8c03\u7528\u56de\u8c03tsum.s(), \u6c47\u603b\u6240\u6709\u7ed3\u679c\n\n\u4e32\u884c\u63a8\u8350\u4f7f\u7528\nchain(add.s(2, 2), add.s(4))\n\u8fd9\u91cc\u662f\u5148\u8c03\u75282+2, \u7136\u540e2+2=4\u7684\u7ed3\u679c\u4f1a\u4f5c\u4e3a\u4e0b\u4e00\u8f6e\u8f93\u5165\uff0c\u4e0e\u7b2c\u4e8c\u4e2aadd\u76f8\u52a0\uff0c\u5f97\u52304+4=8\uff0c\u540e\u8fd4\u56de\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
Celery \u7b14\u8bb0 1.\u9996\u5148\u6267\u884c\u9700\u8981\u5728\u9879\u76ee\u76ee\u5f55\u4e0b\uff0c\u6bcf\u4e2aworker\u90fd\u9700\u8981\u4e00\u4efd\u6ce8\u518c\u4ee3\u7801\u4ee5\u53ca\u4efb\u52a1\u7684\u4ee3\u7801 from …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[20,15],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=\/wp\/v2\/posts\/480"}],"collection":[{"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=480"}],"version-history":[{"count":0,"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=\/wp\/v2\/posts\/480\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=480"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=480"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=480"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}