bug: When using traffic-split , the key of chash is missing in the upstream of traffic-split #3858
Description
Issue description
Environment
- apisix version (2.3):
- OS (ubuntu 16):
- OpenResty / Nginx version (1.19.3):
- etcd version, if have (3.14):
- apisix-dashboard version, if have:
Minimal test code / Steps to reproduce the issue
1.use traffic-split , and set the upstream as follow
curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
{
"uri": "/index.html",
"plugins": {
"traffic-split": {
"rules": [
{
"match": [
{
"vars": [
["http_release","==","new_release"]
]
}
],
"weighted_upstreams": [
{
"upstream": {
"type": "chash",
"key": "remote_addr",
"name": "upstream_A",
"nodes": {
"127.0.0.1:1981":1
"127.0.0.2:1981":1
}
}
}
]
}
]
}
},
"upstream": {
"type": "roundrobin",
"nodes": {
"127.0.0.1:1980": 1
}
}
}'
curl http://127.0.0.1:9080/index.html -H "release:new_release" -i
<html>
<head><title>500 Internal Server Error</title></head>
<body>
<center><h1>500 Internal Server Error</h1></center>
<hr><center>openresty</center>
</body>
</html>
What's the actual result? (including assertion message & call stack if applicable)
Error can be found in error.log
2021/03/18 15:36:04 [error] 72662#72662: *683 failed to run balancer_by_lua*: /chash.lua:36: invalid argument, expect string value
stack traceback:
[C]: in function 'error'
/data/app/huya-nginx-proxy/apisix/core/ctx.lua:139: in function '__index'
/data/app/huya-nginx-proxy/apisix/balancer/chash.lua:36: in function 'fetch_chash_hash_key'
/data/app/huya-nginx-proxy/apisix/balancer/chash.lua:81: in function 'get'
/data/app/huya-nginx-proxy/apisix/balancer.lua:172: in function 'pick_server'
/data/app/huya-nginx-proxy/apisix/balancer.lua:197: in function 'load_balancer'
/data/app/huya-nginx-proxy/apisix/init.lua:718: in function 'http_balancer_phase'
What's the expected result?
No error