The Pro version of the Prometheus Exporter for Bitbucket provides information about Bitbucket Mbeans from JVM. You can find how to enable MBeans for Bitbucket here.
com.atlassian.bitbucket, com.atlassian.bitbucket.thread-pools, com.atlassian.diagnostics, com.atlassian.webhooks:
...
Metrics are provided only for attributes which are of the long, int, boolean and double types.
Naming convention
All mbeans attributes start with bitbucket_jmx_ prefix.
Let's take the CloneBytesWritten attribute of the com.atlassian.bitubucket Mbean with the name HttpHostingStatistics:
...
As you can see this attribute is of the long type and the value of the attribute is 12685.
The name of the attribute in Prometheus will be:
bitbucket_jmx_<the folder of the Mbean>_name_<the name of the MBean>_<the name of the attribute>
which is:
...