Variable containing special characters

[DMOsipov]

Hi,

In my dashboard I have variable $instance containing IP address of monitored host, for example 127.0.0.1
If I specify filter expression instance="$instance" then empty resultset is returned from the prometheus alert manager. In query inspector I can see that all dots in IP address escaped with two backslashes and than URI-encoded:

api/datasources/proxy/2/api/v1/alerts?silenced=false&inhibited=false&filter=instance%3D%22127%5C%5C.0%5C%5C.0%5C%5C.1%22"

and of course alert manager is unable to find alerts with instance=127\\.0\\.0\\.1

Investigating the issue I found that fix #40 added new function interpolateQueryExpr calling dsSpecialRegexEscape with very string escape functionality. I have no idea why so many escapes are required, but seems those escape function is the root cause of my issue.

[hbollon]

Hey @DMOsipov,
Sorry for the (very) late response 😓
This issue should be now solved since few releases, if you're always using our plugin maybe you could give a try to the new v1.1.0 😉
I'm closing this but don't hesitate to open new issues.