Gary-Airwallex opened a new issue #2119:
URL: https://github.com/apache/apisix/issues/2119
### Issue description
We'd like to access ctx.matched_route.value.uri (or uris) in
prometheus.exporter.log(). It worked fine with routes like
```
# /apisix/admin/routes/1
"methods": ["GET"],
"plugins": {
"prometheus": {
}
},
"upstream": {
"nodes": {
"127.0.0.1:1980": 1
},
"type": "roundrobin"
},
"uri": "/hello"
```
But after adding
```
# /apisix/admin/services/1
"plugins": {
"prometheus": {}
},
"upstream": {
"nodes": {
"127.0.0.1:1980": 1
},
"type": "roundrobin"
}
# /apisix/admin/routes/2
"service_id": 1,
"uri": "/hello1"
```
I'm getting
```
{"value":{"service_id":"1","plugins":{"prometheus":{}},"upstream":{"hash_on":"vars","nodes":[{"host":"127.0.0.1","port":1980,"weight":1}],"type":"roundrobin"},"id":"2"},"clean_handlers":{},"createdIndex":931,"modifiedIndex":931,"has_domain":false,"key":"\/apisix\/services\/1","_cache_ver":{"value":{"plugins":{"prometheus":{}},"upstream":{"nodes":[{"host":"127.0.0.1","port":1980,"weight":1}],"hash_on":"vars","type":"roundrobin"},"id":"1"},"clean_handlers":{},"createdIndex":931,"has_domain":false,"key":"\/apisix\/services\/1","modifiedIndex":931}}
```
as ctx.matched_route in `prometheus.exporter.log` for GET /hello1. Notice
that uri is missing in value.
Any help is greatly appreciated.
### Environment
* apisix version (cmd: `apisix version`): 1.5
* OS: osx
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