[sr-dev] [kamailio/kamailio] xHTTP_PROM does not include metric_type (Issue #3001)

[mneirynck]

### Description
We have a couple of Kamailio containers running on AWS ECS Fargate. Using a Cloudwatch Agent sidecar container I should be able to collect metrics from the Kamailio containers and push them to Cloudwatch for monitoring.

```
xHTTP_PROM exposes the metrics like this:
# Kamailio whole internal statistics
kamailio_app_python3_traced_replies 0 1640265350616
kamailio_app_python3_traced_requests 0 1640265350616
kamailio_core_bad_URIs_rcvd 0 1640265350616
kamailio_core_bad_msg_hdr 0 1640265350616
```

While other prometheus metrics I have seen are throwing metrics like this:
```
# HELP kamailio_core_shmmem_free Free shared memory.
# TYPE kamailio_core_shmmem_free gauge
```
### Troubleshooting

#### Reproduction

<!--
If the issue can be reproduced, describe how it can be done.
-->

#### Debugging Data

<!--
If you got a core dump, use gdb to extract troubleshooting data - full backtrace,
local variables and the list of the code at the issue location.

  gdb /path/to/kamailio /path/to/corefile
  bt full
  info locals
  list

If you are familiar with gdb, feel free to attach more of what you consider to
be relevant.
-->

```
(paste your debugging data here)
```

#### Log Messages

<!--
Check the syslog file and if there are relevant log messages printed by Kamailio, add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site).
-->

```
(paste your log messages here)
```

#### SIP Traffic

<!--
If the issue is exposed by processing specific SIP messages, grab them with ngrep or save in a pcap file, then add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site).
-->

```
(paste your sip traffic here)
```

### Possible Solutions

<!--
If you found a solution or workaround for the issue, describe it. Ideally, provide a pull request with a fix.
-->

### Additional Information

  * **Kamailio Version** - output of `kamailio -v`

```
(paste your output here)
```

* **Operating System**:

<!--
Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...;
Kernel details (output of `lsb_release -a` and `uname -a`)
-->

```
(paste your output here)
```


-- 
Reply to this email directly or view it on GitHub:
https://github.com/kamailio/kamailio/issues/3001
You are receiving this because you are subscribed to this thread.

Message ID: <kamailio/kamailio/issues/3001 at github.com>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.kamailio.org/pipermail/sr-dev/attachments/20220112/cb03ec74/attachment.htm>